/* roulang page: index */
:root {
    --bg-primary: #070D18;
    --bg-secondary: #0F182A;
    --bg-elevated: #111C30;
    --glass-bg: rgba(148, 163, 184, 0.06);
    --glass-border: rgba(148, 163, 184, 0.18);
    --accent: #22D3EE;
    --accent-hover: #67E8F9;
    --accent-glow: rgba(34, 211, 238, 0.30);
    --amber: #F5B544;
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --success: #2DD4BF;
    --warning: #F97316;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.20);
    --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.30);
    --shadow-glow-hover: 0 0 36px rgba(34, 211, 238, 0.50);
    --header-height: 72px;
    --container-width: 1200px;
    --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-family);
    background: radial-gradient(ellipse at 20% 0%, #0C1424 0%, var(--bg-primary) 65%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}
a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--accent-hover);
}
img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}
.container {
    max-width: var(--container-width);
    padding-left: 20px;
    padding-right: 20px;
    margin: 0 auto;
}
.row {
    --bs-gutter-x: 1.5rem;
    --bs-gutter-y: 1.5rem;
}
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    padding: 10px 26px;
    transition: all 0.25s ease;
    border: none;
    font-family: var(--font-family);
}
.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.25);
}
.btn-accent {
    background: var(--accent);
    color: #071019;
    box-shadow: var(--shadow-glow);
}
.btn-accent:hover {
    background: var(--accent-hover);
    color: #071019;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-hover);
}
.btn-ghost {
    background: rgba(148, 163, 184, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(148, 163, 184, 0.25);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    background: rgba(148, 163, 184, 0.15);
    color: var(--accent);
    border-color: rgba(34, 211, 238, 0.4);
    transform: translateY(-2px);
}
.btn-glow-lg {
    height: 52px;
    padding: 0 40px;
    font-size: 16px;
    border-radius: 12px;
    background: var(--accent);
    color: #071019;
    box-shadow: var(--shadow-glow);
}
.btn-glow-lg:hover {
    background: var(--accent-hover);
    color: #071019;
    box-shadow: var(--shadow-glow-hover);
    transform: translateY(-3px);
}
.section {
    padding: 96px 0;
}
.section-header {
    margin-bottom: 48px;
}
.section-title {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    color: var(--text-primary);
}
.section-overline {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.section-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    max-width: 720px;
}
.text-amber {
    color: var(--amber);
}
.text-accent {
    color: var(--accent);
}
.text-muted {
    color: var(--text-muted);
}
/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1040;
    background: rgba(7, 13, 24, 0.82);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}
.header.scrolled {
    background: rgba(7, 13, 24, 0.92);
    border-bottom-color: rgba(148, 163, 184, 0.12);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    flex-shrink: 0;
}
.brand-logo:hover {
    color: var(--accent);
}
.brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), #0E4B5E);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    box-shadow: 0 0 16px rgba(34, 211, 238, 0.3);
}
.nav-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-list {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    margin: 0;
}
.nav-link {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    position: relative;
    transition: color 0.25s ease;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}
.nav-link:hover {
    color: var(--accent-hover);
}
.nav-link:hover::after {
    transform: scaleX(1);
}
.nav-link.active {
    color: var(--accent);
}
.nav-link.active::after {
    transform: scaleX(1);
}
.mega-trigger {
    position: relative;
}
.mega-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 10px;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
}
.mega-btn:hover {
    background: rgba(34, 211, 238, 0.2);
    border-color: rgba(34, 211, 238, 0.4);
    color: var(--accent-hover);
}
.mega-panel {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 680px;
    max-width: calc(100vw - 40px);
    background: rgba(10, 18, 32, 0.96);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s ease;
    z-index: 1050;
}
.mega-trigger:hover .mega-panel,
.mega-trigger:focus-within .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.mega-row {
    display: grid;
    grid-template-columns: 1fr 1fr 220px;
    gap: 24px;
}
.mega-col h5 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.mega-col a.mega-link {
    display: block;
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s ease, padding-left 0.2s ease;
}
.mega-col a.mega-link:hover {
    color: var(--accent);
    padding-left: 6px;
}
.mega-list-item {
    display: block;
    padding: 8px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
.mega-list-item:last-child {
    border-bottom: none;
}
.mega-list-item .t {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    display: block;
}
.mega-list-item .d {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 2px;
    display: block;
}
.mega-card {
    border-radius: 12px;
    overflow: hidden;
    background: rgba(148, 163, 184, 0.06);
    border: 1px solid var(--glass-border);
    height: 100%;
}
.mega-card img {
    width: 100%;
    height: 110px;
    object-fit: cover;
}
.mega-card-body {
    padding: 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.nav-trigger {
    display: none;
    background: none;
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: 10px;
    width: 44px;
    height: 44px;
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}
/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    padding-bottom: 40px;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    mask-image: radial-gradient(circle at 30% 30%, #000 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(circle at 30% 30%, #000 0%, transparent 70%);
}
.hero::after {
    content: "";
    position: absolute;
    top: -20%;
    right: -15%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(148,163,184,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 2;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.25);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 24px;
}
.hero-badge::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}
.hero-h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.hero-sub {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.8;
    margin-bottom: 32px;
}
.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.hero-trust {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}
.trust-item::before {
    content: "";
    width: 18px;
    height: 18px;
    background: rgba(34, 211, 238, 0.15);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(34, 211, 238, 0.3);
}
.trust-item span.check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(34, 211, 238, 0.15);
    color: var(--accent);
    font-size: 10px;
    font-weight: 700;
    border: 1px solid rgba(34, 211, 238, 0.3);
    margin-right: 6px;
}
.hero-visual {
    position: relative;
    z-index: 2;
}
.browser-frame {
    background: rgba(10, 18, 32, 0.8);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    transition: transform 0.4s ease;
}
.browser-frame:hover {
    transform: translateY(-6px);
}
.browser-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(148, 163, 184, 0.04);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}
.browser-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    opacity: 0.5;
}
.browser-dot:first-child { background: #F97316; opacity: 0.8; }
.browser-dot:nth-child(2) { background: var(--amber); opacity: 0.8; }
.browser-dot:nth-child(3) { background: var(--success); opacity: 0.8; }
.browser-bar-url {
    flex: 1;
    margin-left: 10px;
    background: rgba(148, 163, 184, 0.08);
    border-radius: 6px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--text-muted);
    font-family: ui-monospace, "SF Mono", Consolas, monospace;
}
.browser-body {
    padding: 0;
    position: relative;
}
.browser-body img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    display: block;
}
.browser-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(7, 13, 24, 0.8));
    pointer-events: none;
}
.float-card {
    position: absolute;
    background: rgba(10, 18, 32, 0.9);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 18px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.float-card fc-icon {
    display: inline-flex;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    background: rgba(34, 211, 238, 0.15);
    color: var(--accent);
    align-items: center;
    justify-content: center;
    font-size: 12px;
    margin-right: 8px;
}
.float-card-1 {
    top: 15%;
    left: -20px;
    animation: float 4s ease-in-out infinite;
}
.float-card-2 {
    bottom: 20%;
    right: -10px;
    animation: float 5s ease-in-out infinite 1s;
}
.float-card .line {
    display: block;
    width: 80px;
    height: 6px;
    background: rgba(148, 163, 184, 0.2);
    border-radius: 4px;
    margin-top: 4px;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
/* ===== Quick stats bar ===== */
.quick-bar {
    margin-top: -30px;
    padding: 24px 0;
    position: relative;
    z-index: 3;
}
.quick-card {
    background: rgba(10, 18, 32, 0.85);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    padding: 18px 26px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s ease;
}
.quick-card:hover {
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.quick-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(34, 211, 238, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--accent);
    flex-shrink: 0;
}
.quick-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}
.quick-text small {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 2px;
}
/* ===== Feature blocks ===== */
.feature-block {
    padding: 96px 0;
    position: relative;
}
.feature-block.alternate {
    background: rgba(148, 163, 184, 0.02);
    border-top: 1px solid rgba(148, 163, 184, 0.06);
    border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}
.feature-tag {
    display: inline-block;
    background: rgba(34, 211, 238, 0.1);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 12px;
}
.feature-title {
    font-size: 30px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.feature-text {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.feature-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 15px;
    color: var(--accent);
    transition: all 0.25s ease;
}
.feature-more:hover {
    gap: 12px;
    color: var(--accent-hover);
}
.feature-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    position: relative;
    border: 1px solid rgba(148, 163, 184, 0.1);
}
.feature-visual img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.feature-visual:hover img {
    transform: scale(1.03);
}
.feature-number {
    font-size: 80px;
    font-weight: 800;
    color: rgba(34, 211, 238, 0.12);
    line-height: 1;
    position: absolute;
    top: 20px;
    right: 24px;
    font-family: ui-monospace, monospace;
    font-variant-numeric: tabular-nums;
}
.feature-stats {
    display: flex;
    gap: 24px;
    margin-top: 20px;
    flex-wrap: wrap;
}
.feature-stat {
    background: rgba(148, 163, 184, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 14px 22px;
    flex: 1;
    min-width: 140px;
}
.feature-stat .num {
    font-size: 24px;
    font-weight: 800;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}
.feature-stat .label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}
.feature-wide-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(148, 163, 184, 0.1);
}
.feature-wide-visual img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    display: block;
}
.feature-wide-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(7, 13, 24, 0.4) 0%, transparent 70%);
}
.feature-duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.feature-duo .feature-title {
    font-size: 26px;
}
/* ===== Scenario ===== */
.scenario-section {
    background: var(--bg-secondary);
    padding: 96px 0;
    position: relative;
    border-top: 1px solid rgba(148, 163, 184, 0.08);
    border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
.scenario-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: rgba(10, 18, 32, 0.6);
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    position: relative;
}
.scenario-frame img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}
.scenario-caption {
    padding: 24px 28px;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.scenario-caption-left {
    flex: 1;
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 600;
}
.scenario-caption-right {
    display: flex;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}
.divider-line {
    border: none;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    margin: 0;
}
/* ===== Info board (CMS) ===== */
.info-section {
    padding: 96px 0;
}
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.info-card {
    display: flex;
    background: rgba(148, 163, 184, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    overflow: hidden;
    transition: all 0.3s ease;
    color: var(--text-primary);
    height: 100%;
}
.info-card:hover {
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    color: var(--text-primary);
}
.info-thumb {
    width: 40%;
    flex-shrink: 0;
    overflow: hidden;
    background: var(--bg-elevated);
}
.info-thumb img {
    width: 100%;
    height: 100%;
    min-height: 160px;
    object-fit: cover;
    display: block;
    filter: saturate(0.7);
    transition: all 0.4s ease;
}
.info-card:hover .info-thumb img {
    filter: saturate(1);
    transform: scale(1.03);
}
.info-body {
    width: 60%;
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.info-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.info-cat {
    background: rgba(34, 211, 238, 0.12);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 999px;
}
.info-date {
    color: var(--text-muted);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}
.info-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.info-summary {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
}
.info-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    transition: gap 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.info-card:hover .info-more {
    gap: 8px;
}
.info-board-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 24px;
    background: rgba(148, 163, 184, 0.03);
    border: 1px dashed rgba(148, 163, 184, 0.2);
    border-radius: 14px;
    color: var(--text-secondary);
    font-size: 15px;
}
/* ===== Social proof ===== */
.social-section {
    padding: 96px 0;
    background: rgba(148, 163, 184, 0.02);
    border-top: 1px solid rgba(148, 163, 184, 0.06);
    border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}
.testimonial-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 24px;
}
.testimonial-card {
    background: rgba(148, 163, 184, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    padding: 24px;
    transition: all 0.3s ease;
}
.testimonial-card:hover {
    border-color: rgba(34, 211, 238, 0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.stars {
    display: flex;
    gap: 2px;
    margin-bottom: 12px;
}
.stars i {
    color: var(--amber);
    font-size: 14px;
}
.testimonial-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}
.testimonial-author {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}
.stats-panel {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(245, 181, 68, 0.04));
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: 14px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
    height: 100%;
}
.stat-row {
    text-align: left;
}
.stat-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}
.stat-num .suffix {
    font-size: 24px;
    color: var(--amber);
    margin-left: 2px;
}
.stat-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}
.social-wrap {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 24px;
    align-items: stretch;
}
/* ===== FAQ ===== */
.faq-section {
    padding: 96px 0;
}
.faq-accordion {
    max-width: 820px;
    margin: 0 auto;
}
.faq-accordion .accordion-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    border-radius: 0;
}
.faq-accordion .accordion-item:first-child {
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}
.faq-accordion .accordion-header {
    background: transparent;
    border: none;
}
.faq-accordion .accordion-button {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    padding: 20px 60px 20px 20px;
    position: relative;
    text-align: left;
    box-shadow: none;
    transition: all 0.25s ease;
    font-family: var(--font-family);
}
.faq-accordion .accordion-button:hover {
    color: var(--accent);
}
.faq-accordion .accordion-button:focus {
    box-shadow: none;
    outline: 2px solid rgba(34, 211, 238, 0.3);
    outline-offset: 2px;
}
.faq-accordion .accordion-button::after {
    display: none;
}
.faq-accordion .accordion-button::before {
    content: "\002B";
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(148, 163, 184, 0.08);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 400;
    transition: all 0.25s ease;
}
.faq-accordion .accordion-button:not(.collapsed) {
    color: var(--accent);
    background: transparent;
    box-shadow: none;
}
.faq-accordion .accordion-button:not(.collapsed)::before {
    content: "\2212";
    background: rgba(34, 211, 238, 0.15);
    color: var(--accent);
}
.faq-accordion .accordion-item {
    position: relative;
}
.faq-accordion .accordion-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed))::before,
.faq-accordion .accordion-item:hover::before {
    opacity: 1;
}
.faq-accordion .accordion-body {
    padding: 0 24px 24px 20px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.9;
}
/* ===== CTA ===== */
.cta-section {
    position: relative;
    padding: 120px 0;
    text-align: center;
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    border-top: 1px solid rgba(148, 163, 184, 0.08);
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 13, 24, 0.92), rgba(7, 13, 24, 0.80));
}
.cta-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    margin: 0 auto;
}
.cta-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.cta-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}
/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(148, 163, 184, 0.08);
    padding: 72px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.footer-links {
    list-style: none;
    padding: 0;
}
.footer-links li {
    margin-bottom: 10px;
}
.footer-links a {
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.2s ease;
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-tip {
    background: rgba(148, 163, 184, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 18px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.footer-tip strong {
    color: var(--text-primary);
}
.footer-bottom {
    border-top: 1px solid rgba(148, 163, 184, 0.08);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-copy {
    font-size: 13px;
    color: var(--text-muted);
}
.footer-icp {
    font-size: 13px;
    color: var(--text-muted);
}
.social-mini {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}
.social-mini span {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--glass-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.25s ease;
}
.social-mini span:hover {
    background: rgba(34, 211, 238, 0.15);
    color: var(--accent);
    border-color: rgba(34, 211, 238, 0.3);
}
/* ===== Bottom fixed bar ===== */
.bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    background: rgba(10, 18, 32, 0.92);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-top: 1px solid rgba(148, 163, 184, 0.15);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    gap: 16px;
}
.bottom-bar.visible {
    transform: translateY(0);
}
.bottom-bar-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    flex: 1;
}
.bottom-bar-text small {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
}
.bottom-bar-btn {
    background: var(--accent);
    color: #071019;
    border-radius: 10px;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    transition: all 0.25s ease;
    box-shadow: var(--shadow-glow);
}
.bottom-bar-btn:hover {
    background: var(--accent-hover);
    color: #071019;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-hover);
}
.bottom-bar-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
    padding: 6px;
    line-height: 1;
    border-radius: 6px;
    transition: all 0.2s ease;
}
.bottom-bar-close:hover {
    color: var(--text-primary);
    background: rgba(148, 163, 184, 0.1);
}
.bottom-bar-placeholder {
    height: 64px;
}
/* ===== Responsive ===== */
@media (max-width: 1199px) {
    .mega-row {
        grid-template-columns: 1fr 1fr;
    }
    .mega-row .mega-col:last-child {
        display: none;
    }
    .hero-h1 {
        font-size: 42px;
    }
}
@media (max-width: 991px) {
    .header .nav-list {
        display: none;
    }
    .nav-trigger {
        display: inline-flex;
    }
    .mega-trigger {
        display: block;
    }
    .mega-panel {
        width: 100%;
        left: 0;
        right: 0;
        top: calc(100% + 8px);
        border-radius: 0;
        padding: 20px;
    }
    .mega-row {
        grid-template-columns: 1fr 1fr;
    }
    .hero {
        padding-top: calc(var(--header-height) + 20px);
        min-height: auto;
    }
    .hero-h1 {
        font-size: 36px;
    }
    .hero-visual {
        margin-top: 40px;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .social-wrap {
        grid-template-columns: 1fr;
    }
    .testimonial-grid {
        grid-template-columns: 1fr 1fr;
    }
    .feature-duo {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .section {
        padding: 72px 0;
    }
    .feature-block {
        padding: 72px 0;
    }
}
@media (max-width: 767px) {
    .mega-row {
        grid-template-columns: 1fr;
    }
    .mega-row .mega-col:last-child {
        display: block;
    }
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-cta .btn {
        width: 100%;
        text-align: center;
    }
    .hero-trust {
        gap: 12px;
    }
    .quick-bar .quick-card {
        padding: 14px 18px;
    }
    .info-card {
        flex-direction: column;
    }
    .info-thumb {
        width: 100%;
    }
    .info-thumb img {
        height: 140px;
        min-height: auto;
    }
    .info-body {
        width: 100%;
        padding: 16px;
    }
    .browser-body img {
        height: 240px;
    }
    .feature-visual img {
        height: 240px;
    }
    .feature-wide-visual img {
        height: 240px;
    }
    .scenario-frame img {
        height: 240px;
    }
    .cta-section {
        padding: 72px 0;
    }
    .cta-title {
        font-size: 28px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .bottom-bar-text {
        font-size: 12px;
    }
    .bottom-bar-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    .section-title {
        font-size: 26px;
    }
}
@media (max-width: 575px) {
    .section {
        padding: 56px 0;
    }
    .feature-block {
        padding: 56px 0;
    }
    .hero-h1 {
        font-size: 32px;
    }
    .hero-sub {
        font-size: 15px;
    }
    .float-card-1 {
        left: -10px;
    }
    .float-card-2 {
        right: -5px;
    }
    .info-title {
        font-size: 16px;
    }
    .brand-logo {
        font-size: 17px;
    }
    .brand-icon {
        width: 30px;
        height: 30px;
    }
}

/* roulang page: category1 */
:root {
            --bg-primary: #070D18;
            --bg-secondary: #0F182A;
            --glass-bg: rgba(148, 163, 184, 0.06);
            --glass-border: rgba(148, 163, 184, 0.18);
            --accent-1: #22D3EE;
            --accent-2: #F5B544;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --success: #2DD4BF;
            --warning: #F97316;
            --radius-large: 16px;
            --radius-small: 12px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.20);
            --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.30);
            --shadow-glow-hover: 0 0 36px rgba(34, 211, 238, 0.50);
            --spacer-section: 96px;
            --font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: #070D18;
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 15.5px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            text-decoration: none;
            transition: all 0.25s ease;
            color: var(--accent-1);
        }

        a:hover {
            color: #a5f0fc;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header/Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: transparent;
            backdrop-filter: blur(16px) saturate(140%);
            -webkit-backdrop-filter: blur(16px) saturate(140%);
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header.scrolled {
            background: rgba(7, 13, 24, 0.85);
            backdrop-filter: blur(18px) saturate(145%);
            -webkit-backdrop-filter: blur(18px) saturate(145%);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            gap: 20px;
            width: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: var(--accent-1);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(34, 211, 238, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-1);
            font-size: 17px;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
        }

        .nav-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            color: var(--text-secondary);
            font-size: 14.5px;
            font-weight: 500;
            border-radius: 8px;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
            background: transparent;
            border: none;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-1);
            border-radius: 2px;
            transition: transform 0.25s ease;
        }

        .nav-link:hover {
            color: var(--accent-1);
            background: rgba(34, 211, 238, 0.05);
        }

        .nav-link:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
            background: var(--accent-1);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            position: relative;
        }

        .mega-trigger {
            position: relative;
        }

        .mega-btn {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-primary);
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            backdrop-filter: blur(8px);
        }

        .mega-btn:hover {
            border-color: rgba(34, 211, 238, 0.5);
            color: var(--accent-1);
            background: rgba(34, 211, 238, 0.06);
        }

        .mega-panel {
            position: fixed;
            top: 72px;
            right: 20px;
            width: min(680px, calc(100vw - 40px));
            background: rgba(10, 18, 32, 0.92);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: var(--radius-large);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
            padding: 28px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px) scale(0.98);
            transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
            z-index: 1020;
            pointer-events: none;
        }

        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) scale(1);
            pointer-events: auto;
        }

        .mega-row {
            display: grid;
            grid-template-columns: 1fr 1fr 260px;
            gap: 24px;
        }

        .mega-col h5 {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .mega-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 14px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            transition: color 0.2s, padding-left 0.2s;
        }

        .mega-link:hover {
            color: var(--accent-1);
            padding-left: 4px;
        }

        .mega-list-item {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            transition: background 0.2s;
        }

        .mega-list-item .t {
            display: block;
            color: var(--text-primary);
            font-size: 14px;
            line-height: 1.5;
            transition: color 0.2s;
        }

        .mega-list-item .d {
            display: block;
            color: var(--text-muted);
            font-size: 12px;
            margin-top: 2px;
        }

        .mega-list-item:hover .t {
            color: var(--accent-1);
        }

        .mega-card {
            border-radius: 12px;
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 160px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .mega-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(7, 13, 24, 0.8));
        }

        .mega-card span {
            position: absolute;
            bottom: 12px;
            left: 12px;
            z-index: 1;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
        }

        .mega-empty {
            font-size: 13px;
            color: var(--text-muted);
            padding: 12px 0;
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: 160px 0 64px;
            background: radial-gradient(ellipse at 70% 20%, rgba(34, 211, 238, 0.10), transparent 55%),
                radial-gradient(ellipse at 20% 80%, rgba(245, 181, 68, 0.05), transparent 50%),
                linear-gradient(180deg, #070D18 0%, #0C1424 100%);
            position: relative;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-1);
            margin-bottom: 20px;
        }

        .category-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-1);
            box-shadow: 0 0 8px var(--accent-1);
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            color: #fff;
        }

        .category-hero h1 .highlight {
            color: var(--accent-1);
        }

        .category-hero .lead-text {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: linear-gradient(135deg, #22D3EE, #0ea5b7);
            color: #04121b;
            font-size: 15px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            cursor: pointer;
            min-height: 44px;
        }

        .btn-primary-custom:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #031018;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 28px;
            background: rgba(148, 163, 184, 0.06);
            border: 1px solid rgba(148, 163, 184, 0.35);
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(8px);
            transition: background 0.25s ease, border 0.25s ease, color 0.25s, transform 0.25s;
            cursor: pointer;
            min-height: 44px;
        }

        .btn-outline-custom:hover {
            border-color: var(--accent-1);
            color: var(--accent-1);
            background: rgba(34, 211, 238, 0.06);
            transform: translateY(-2px);
        }

        .hero-metrics {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            padding-top: 12px;
            border-top: 1px solid rgba(148, 163, 184, 0.12);
        }

        .hero-metrics .metric-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 13px;
        }

        .hero-metrics .metric-item i {
            color: var(--accent-1);
            font-size: 15px;
        }

        /* ===== Info Panel / Left & Right ===== */
        .info-section {
            padding: var(--spacer-section) 0;
            background: #070D18;
        }

        .info-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .info-left {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-large);
            padding: 36px;
            backdrop-filter: blur(8px);
            position: relative;
            overflow: hidden;
            height: 100%;
        }

        .info-left::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100px;
            background: var(--accent-1);
            border-radius: 0 0 4px 0;
        }

        .info-left .section-tag {
            font-size: 13px;
            color: var(--accent-1);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .info-left h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .info-left p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .info-list li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

        .info-list li:last-child {
            border-bottom: none;
        }

        .info-list li i {
            color: var(--success);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .info-right {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .info-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-large);
            padding: 28px;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(34, 211, 238, 0.25);
        }

        .info-card .icon-wrap {
            width: 44px;
            height: 44px;
            background: rgba(34, 211, 238, 0.10);
            border: 1px solid rgba(34, 211, 238, 0.20);
            border-radius: var(--radius-small);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-1);
            margin-bottom: 18px;
        }

        .info-card h3 {
            font-size: 18px;
            font-weight: 650;
            margin-bottom: 10px;
            color: #fff;
        }

        .info-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Steps / Process ===== */
        .steps-section {
            padding: 0 0 var(--spacer-section);
            background: #070D18;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.20);
            color: var(--accent-1);
            padding: 4px 16px;
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 750;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 480px;
            margin: 0 auto;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-large);
            padding: 32px 24px;
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
        }

        .step-card::before {
            counter-increment: step-counter;
            content: counter(step-counter, decimal-leading-zero);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 38px;
            font-weight: 800;
            color: rgba(34, 211, 238, 0.12);
            font-variant-numeric: tabular-nums;
            line-height: 1;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(34, 211, 238, 0.30);
        }

        .step-card .step-icon {
            font-size: 24px;
            color: var(--accent-1);
            margin-bottom: 18px;
            background: rgba(34, 211, 238, 0.08);
            width: 52px;
            height: 52px;
            border-radius: var(--radius-small);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 650;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Device / Platform Demo ===== */
        .platform-section {
            padding: 0 0 var(--spacer-section);
            background: #070D18;
        }

        .platform-box {
            background: var(--bg-secondary);
            border: 1px solid rgba(148, 163, 184, 0.12);
            border-radius: 20px;
            padding: 40px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0F182A 0%, #0A1220 100%);
        }

        .platform-box::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.10), transparent 70%);
            pointer-events: none;
        }

        .platform-browser {
            background: rgba(7, 13, 24, 0.8);
            border: 1px solid rgba(148, 163, 184, 0.20);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.40);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .browser-bar {
            height: 40px;
            background: rgba(15, 24, 42, 0.85);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            display: flex;
            align-items: center;
            padding: 0 16px;
            gap: 8px;
        }

        .browser-bar .dots {
            display: flex;
            gap: 6px;
        }

        .browser-bar .dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: block;
        }

        .browser-bar .dots span:nth-child(1) {
            background: #F97316;
        }

        .browser-bar .dots span:nth-child(2) {
            background: var(--accent-2);
        }

        .browser-bar .dots span:nth-child(3) {
            background: var(--success);
        }

        .browser-bar .url-bar {
            flex: 1;
            margin-left: 12px;
            background: rgba(148, 163, 184, 0.10);
            border-radius: 6px;
            height: 22px;
            max-width: 340px;
        }

        .browser-body {
            background: url('/assets/images/backpic/back-2.png') center/cover;
            height: 360px;
            position: relative;
        }

        .browser-body::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 13, 24, 0.10) 0%, rgba(7, 13, 24, 0.50) 100%);
        }

        .platform-points {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 12px;
            position: relative;
            z-index: 1;
        }

        .platform-points .point {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.06);
            border: 1px solid rgba(34, 211, 238, 0.15);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .platform-points .point i {
            color: var(--accent-1);
        }

        /* ===== Latest content ===== */
        .latest-section {
            padding: 0 0 var(--spacer-section);
            background: #070D18;
        }

        .recent-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card-h {
            display: flex;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-large);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
            min-height: 180px;
        }

        .article-card-h:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(34, 211, 238, 0.25);
        }

        .article-card-h .card-img {
            width: 40%;
            background: url('/assets/images/coverpic/cover-1.png') center/cover;
            min-height: 100%;
            flex-shrink: 0;
            transition: transform 0.4s ease;
        }

        .article-card-h:hover .card-img {
            transform: scale(1.03);
        }

        .article-card-h:nth-child(2) .card-img {
            background-image: url('/assets/images/coverpic/cover-3.webp');
        }

        .article-card-h .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .card-meta .badge-tag {
            background: rgba(34, 211, 238, 0.10);
            color: var(--accent-1);
            border: 1px solid rgba(34, 211, 238, 0.20);
            font-size: 11px;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-weight: 600;
        }

        .card-meta .badge-tag.amber {
            background: rgba(245, 181, 68, 0.10);
            color: var(--accent-2);
            border-color: rgba(245, 181, 68, 0.20);
        }

        .article-card-h h3 {
            font-size: 17px;
            font-weight: 650;
            line-height: 1.5;
            margin-bottom: 8px;
            color: #fff;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-h h3 a {
            color: #fff;
        }

        .article-card-h h3 a:hover {
            color: var(--accent-1);
        }

        .article-card-h p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .read-more {
            font-size: 13px;
            color: var(--accent-1);
            font-weight: 500;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .read-more:hover {
            color: #a5f0fc;
            text-decoration: none;
            gap: 8px;
        }

        .info-empty {
            background: var(--glass-bg);
            border: 1px dashed rgba(148, 163, 184, 0.25);
            border-radius: var(--radius-large);
            padding: 60px 20px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 0 0 var(--spacer-section);
            background: #070D18;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: transparent;
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            transition: background 0.2s ease;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-item .accordion-button {
            background: transparent;
            border: none;
            padding: 22px 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            box-shadow: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            cursor: pointer;
            position: relative;
            font-family: var(--font-family);
        }

        .faq-item .accordion-button::before {
            content: '';
            position: absolute;
            left: 0;
            top: 20%;
            height: 60%;
            width: 2px;
            background: transparent;
            transition: background 0.3s;
        }

        .faq-item .accordion-button:not(.collapsed) {
            background: transparent;
            box-shadow: none;
            color: var(--accent-1);
        }

        .faq-item .accordion-button:not(.collapsed)::before {
            background: var(--accent-1);
        }

        .faq-item .accordion-button .faq-icon {
            position: relative;
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            transition: transform 0.3s;
            margin-left: 12px;
        }

        .faq-item .accordion-button .faq-icon::before,
        .faq-item .accordion-button .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: background 0.3s, transform 0.3s;
        }

        .faq-item .accordion-button .faq-icon::before {
            width: 12px;
            height: 2px;
            top: 10px;
            left: 5px;
        }

        .faq-item .accordion-button .faq-icon::after {
            width: 2px;
            height: 12px;
            top: 5px;
            left: 10px;
        }

        .faq-item .accordion-button:hover .faq-icon::before,
        .faq-item .accordion-button:hover .faq-icon::after {
            background: var(--accent-1);
        }

        .faq-item .accordion-button:not(.collapsed) .faq-icon::after {
            transform: scaleY(0);
        }

        .faq-item .accordion-body {
            padding: 4px 16px 22px 24px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.8;
            background: transparent;
        }

        .faq-item .accordion-body .inner-text {
            margin-bottom: 8px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(7, 13, 24, 0.88);
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-inner {
            text-align: center;
            padding: 32px 0;
            background: rgba(15, 24, 42, 0.50);
            border: 1px solid rgba(148, 163, 184, 0.10);
            border-radius: 24px;
            backdrop-filter: blur(16px) saturate(140%);
            padding: 56px 40px;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-inner .btn-primary-custom {
            padding: 14px 48px;
            font-size: 16px;
            height: 52px;
            box-shadow: var(--shadow-glow);
        }

        .cta-inner .btn-primary-custom:hover {
            box-shadow: var(--shadow-glow-hover);
        }

        /* ===== Footer ===== */
        .footer {
            background: #0F182A;
            padding: 72px 0 24px;
            border-top: 1px solid rgba(148, 163, 184, 0.10);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .social-mini {
            display: flex;
            gap: 10px;
        }

        .social-mini span {
            width: 36px;
            height: 36px;
            background: rgba(148, 163, 184, 0.08);
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .social-mini span:hover {
            color: var(--accent-1);
            border-color: rgba(34, 211, 238, 0.4);
            background: rgba(34, 211, 238, 0.08);
            transform: translateY(-2px);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 13.5px;
            color: var(--text-secondary);
            text-decoration: none;
            position: relative;
            padding-left: 0;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-links a:hover {
            color: var(--accent-1);
            padding-left: 6px;
        }

        .footer-tip {
            background: rgba(148, 163, 184, 0.06);
            border: 1px solid rgba(148, 163, 184, 0.12);
            border-radius: var(--radius-small);
            padding: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .footer-tip strong {
            color: var(--text-primary);
            display: block;
            margin-bottom: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-icp {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Floating bar ===== */
        .floating-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(10, 18, 32, 0.85);
            backdrop-filter: blur(14px) saturate(140%);
            -webkit-backdrop-filter: blur(14px) saturate(140%);
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            height: 64px;
            display: flex;
            align-items: center;
            padding: 0 20px;
            transform: translateY(0);
            transition: transform 0.4s ease;
        }

        .floating-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .floating-text {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .floating-text span {
            color: var(--accent-1);
            font-weight: 700;
        }

        .floating-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .floating-actions .btn-primary-custom {
            min-height: 40px;
            padding: 8px 24px;
            font-size: 14px;
        }

        .floating-close {
            background: transparent;
            border: none;
            color: var(--text-muted);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 13px;
            transition: all 0.2s;
        }

        .floating-close:hover {
            background: rgba(148, 163, 184, 0.15);
            color: var(--text-primary);
        }

        /* Spacer bottom for floating bar */
        .floating-spacer {
            height: 64px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            ::root {
                --spacer-section: 72px;
            }

            .mega-row {
                grid-template-columns: 1fr 1fr;
            }

            .mega-row .mega-col:last-child {
                display: none;
            }

            .nav-list .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }

            .latest-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .info-row {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .category-hero {
                padding: 130px 0 48px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .category-hero .lead-text {
                font-size: 15px;
            }

            .header {
                height: 64px;
            }

            .header-inner {
                flex-wrap: wrap;
                gap: 8px;
            }

            .nav-wrap {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
                scrollbar-width: thin;
                scrollbar-color: rgba(34, 211, 238, 0.3) transparent;
                -webkit-overflow-scrolling: touch;
            }

            .nav-list {
                flex-wrap: nowrap;
                width: max-content;
            }

            .nav-right {
                margin-left: auto;
            }

            .mega-panel {
                position: fixed;
                top: 64px;
                right: 12px;
                left: 12px;
                width: auto;
                max-width: calc(100vw - 24px);
                padding: 20px;
                max-height: calc(100vh - 80px);
                overflow-y: auto;
            }

            .mega-row {
                grid-template-columns: 1fr;
            }

            .mega-row .mega-col:last-child {
                display: block;
            }

            .hero-metrics {
                gap: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                margin-bottom: 8px;
            }

            .info-section {
                padding: 48px 0;
            }

            .info-left {
                padding: 24px;
            }

            .steps-section {
                padding-bottom: 48px;
            }

            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .step-card {
                padding: 24px 18px;
            }

            .step-card::before {
                font-size: 28px;
                top: 14px;
                right: 16px;
            }

            .platform-section {
                padding-bottom: 48px;
            }

            .platform-box {
                padding: 20px;
            }

            .browser-body {
                height: 240px;
            }

            .latest-section {
                padding-bottom: 48px;
            }

            .recent-grid {
                grid-template-columns: 1fr;
            }

            .article-card-h {
                flex-direction: column;
                min-height: auto;
            }

            .article-card-h .card-img {
                width: 100%;
                height: 180px;
            }

            .article-card-h .card-body {
                padding: 18px;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-inner {
                padding: 32px 20px;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .floating-bar {
                height: auto;
                min-height: 68px;
                padding: 10px 16px;
            }

            .floating-text {
                font-size: 13px;
                max-width: 60%;
            }

            .floating-actions .btn-primary-custom {
                padding: 8px 16px;
                font-size: 13px;
                min-width: 90px;
            }
        }

        @media (max-width: 575.98px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .recent-grid {
                grid-template-columns: 1fr;
            }

            .article-card-h {
                flex-direction: column;
            }

            .article-card-h .card-img {
                width: 100%;
                height: 180px;
            }

            .info-left {
                padding: 20px;
            }

            .hero-metrics {
                gap: 12px;
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
        --bg-body: #070D18;
        --bg-layer: #0F182A;
        --bg-card: rgba(148, 163, 184, 0.06);
        --border-card: rgba(148, 163, 184, 0.18);
        --accent: #22D3EE;
        --accent-alt: #F5B544;
        --success: #2DD4BF;
        --warning: #F97316;
        --text-main: #E2E8F0;
        --text-sub: #94A3B8;
        --text-muted: #64748B;
        --radius-lg: 16px;
        --radius-sm: 12px;
        --radius-btn: 10px;
        --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.20);
        --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.35);
        --glow: 0 0 20px rgba(34, 211, 238, 0.30);
        --glow-hover: 0 0 36px rgba(34, 211, 238, 0.50);
        --transition: all 0.3s ease;
        --font-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-base);
        background: radial-gradient(ellipse at 20% 0%, #0C1424 0%, var(--bg-body) 55%) fixed;
        color: var(--text-main);
        line-height: 1.7;
        padding-bottom: 64px;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: var(--accent);
        text-decoration: none;
        transition: color 0.25s ease;
    }

    a:hover {
        color: #67e8f9;
        text-decoration: none;
    }

    img {
        max-width: 100%;
        display: block;
    }

    .container {
        max-width: 1200px;
        padding-left: 20px;
        padding-right: 20px;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        color: var(--text-main);
        font-weight: 700;
        line-height: 1.35;
    }

    .btn {
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        letter-spacing: 0.3px;
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-width: 1px;
    }

    .btn-primary {
        background: var(--accent);
        border-color: var(--accent);
        color: #070D18;
        box-shadow: var(--glow);
        padding: 10px 28px;
    }

    .btn-primary:hover,
    .btn-primary:focus {
        background: #67e8f9;
        border-color: #67e8f9;
        color: #070D18;
        box-shadow: var(--glow-hover);
        transform: translateY(-2px);
    }

    .btn-outline {
        background: transparent;
        border: 1px solid rgba(148, 163, 184, 0.3);
        color: var(--text-main);
        padding: 10px 28px;
    }

    .btn-outline:hover,
    .btn-outline:focus {
        border-color: var(--accent);
        color: var(--accent);
        background: rgba(34, 211, 238, 0.06);
        transform: translateY(-2px);
    }

    .btn:focus,
    .btn:focus-visible,
    .form-control:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.18);
    }

    /* ===== Header ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 72px;
        z-index: 1000;
        background: rgba(7, 13, 24, 0.72);
        backdrop-filter: blur(16px) saturate(140%);
        -webkit-backdrop-filter: blur(16px) saturate(140%);
        border-bottom: 1px solid transparent;
        transition: var(--transition);
    }

    .header.scrolled {
        background: rgba(7, 13, 24, 0.88);
        border-bottom-color: rgba(148, 163, 184, 0.15);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        gap: 24px;
    }

    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        color: var(--text-main);
        text-decoration: none;
        white-space: nowrap;
        letter-spacing: 0.5px;
        transition: opacity 0.2s;
    }

    .brand-logo:hover {
        opacity: 0.85;
        color: var(--text-main);
    }

    .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: linear-gradient(135deg, rgba(34, 211, 238, 0.22), rgba(34, 211, 238, 0.05));
        border: 1px solid rgba(34, 211, 238, 0.35);
        color: var(--accent);
        font-size: 16px;
    }

    .nav-wrap {
        display: flex;
        align-items: center;
    }

    .nav-list {
        display: flex;
        align-items: center;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 6px;
    }

    .nav-link {
        display: inline-block;
        padding: 8px 14px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-sub);
        text-decoration: none;
        border-radius: 8px;
        position: relative;
        transition: color 0.25s, background 0.25s;
    }

    .nav-link:hover {
        color: var(--accent);
        background: rgba(34, 211, 238, 0.06);
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 14px;
        right: 14px;
        bottom: 2px;
        height: 2px;
        border-radius: 2px;
        background: var(--accent);
        transform: scaleX(0);
        transition: transform 0.3s ease;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        transform: scaleX(1);
    }

    .nav-link.active {
        color: var(--accent);
        font-weight: 600;
    }

    .nav-right {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .mega-trigger {
        position: relative;
    }

    .mega-btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 9px 18px;
        border: 1px solid rgba(148, 163, 184, 0.25);
        background: rgba(148, 163, 184, 0.06);
        border-radius: 999px;
        color: var(--text-main);
        font-size: 14px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
    }

    .mega-btn:hover {
        border-color: rgba(34, 211, 238, 0.5);
        color: var(--accent);
        box-shadow: 0 0 16px rgba(34, 211, 238, 0.12);
    }

    .mega-panel {
        position: absolute;
        top: calc(100% + 16px);
        right: 0;
        width: 680px;
        background: rgba(15, 24, 42, 0.97);
        backdrop-filter: blur(16px) saturate(140%);
        -webkit-backdrop-filter: blur(16px) saturate(140%);
        border: 1px solid rgba(148, 163, 184, 0.16);
        border-radius: 16px;
        padding: 24px;
        box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
        opacity: 0;
        visibility: hidden;
        transform: translateY(8px);
        transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
        z-index: 1000;
    }

    .mega-trigger:hover .mega-panel,
    .mega-panel.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .mega-row {
        display: grid;
        grid-template-columns: 1.2fr 1fr 0.9fr;
        gap: 24px;
    }

    .mega-col h5 {
        font-size: 13px;
        font-weight: 700;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 14px;
        border-left: 2px solid var(--accent);
        padding-left: 10px;
    }

    .mega-link {
        display: block;
        padding: 6px 0;
        font-size: 14px;
        color: var(--text-sub);
        text-decoration: none;
        transition: color 0.2s, padding-left 0.2s;
    }

    .mega-link:hover {
        color: var(--accent);
        padding-left: 4px;
    }

    .mega-list-item {
        display: block;
        padding: 7px 0;
        border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        transition: background 0.2s;
    }

    .mega-list-item:last-child {
        border-bottom: none;
    }

    .mega-list-item .t {
        display: block;
        font-size: 14px;
        color: var(--text-main);
        font-weight: 500;
        transition: color 0.2s;
    }

    .mega-list-item:hover .t {
        color: var(--accent);
    }

    .mega-list-item .d {
        font-size: 12px;
        color: var(--text-muted);
    }

    .mega-card {
        background: rgba(148, 163, 184, 0.06);
        border: 1px solid rgba(148, 163, 184, 0.14);
        border-radius: 12px;
        padding: 12px;
        text-align: center;
        transition: border-color 0.25s;
    }

    .mega-card img {
        width: 100%;
        border-radius: 8px;
        margin-bottom: 10px;
        aspect-ratio: 16 / 10;
        object-fit: cover;
    }

    .mega-card span {
        font-size: 13px;
        color: var(--text-sub);
    }

    .mega-empty {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
    }

    /* ===== 面包屑 ===== */
    .page-main {
        padding-top: 72px;
    }

    .breadcrumb-bar {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 24px 0 20px;
        flex-wrap: wrap;
        font-size: 14px;
        color: var(--text-muted);
    }

    .breadcrumb-bar a {
        color: var(--text-sub);
        text-decoration: none;
        transition: color 0.2s;
    }

    .breadcrumb-bar a:hover {
        color: var(--accent);
    }

    .breadcrumb-bar .sep {
        font-size: 11px;
        color: var(--text-muted);
        opacity: 0.7;
    }

    .breadcrumb-bar .current {
        color: var(--text-main);
        font-weight: 500;
        max-width: 320px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* ===== 文章卡片 ===== */
    .article-card {
        background: rgba(148, 163, 184, 0.04);
        border: 1px solid rgba(148, 163, 184, 0.12);
        border-radius: var(--radius-lg);
        padding: 40px 44px;
        box-shadow: var(--shadow-card);
        position: relative;
    }

    .article-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 40px;
        right: 40px;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.5), transparent);
    }

    .article-head {
        text-align: center;
        padding: 8px 0 28px;
    }

    .article-head h1 {
        font-size: 34px;
        font-weight: 800;
        line-height: 1.3;
        color: var(--text-main);
        margin-bottom: 18px;
        letter-spacing: 0.5px;
    }

    .article-meta {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 28px;
        flex-wrap: wrap;
        color: var(--text-sub);
        font-size: 14px;
    }

    .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .meta-item i {
        color: var(--accent);
        font-size: 13px;
    }

    .article-cover {
        position: relative;
        border-radius: 14px;
        overflow: hidden;
        aspect-ratio: 16 / 9;
        margin-bottom: 36px;
        border: 1px solid rgba(148, 163, 184, 0.1);
        background: var(--bg-layer);
    }

    .article-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }

    .article-card:hover .article-cover img {
        transform: scale(1.01);
    }

    .article-cover .cover-mask {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 55%, rgba(7, 13, 24, 0.55) 100%);
        pointer-events: none;
    }

    .cover-badge {
        position: absolute;
        left: 20px;
        bottom: 16px;
        background: rgba(7, 13, 24, 0.65);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(34, 211, 238, 0.3);
        color: var(--accent);
        font-size: 12px;
        font-weight: 600;
        padding: 5px 14px;
        border-radius: 999px;
        letter-spacing: 0.5px;
    }

    /* ===== 正文 ===== */
    .article-content {
        max-width: 780px;
        margin: 0 auto;
    }

    .rich-text {
        color: var(--text-main);
        font-size: 16px;
        line-height: 1.9;
    }

    .rich-text h3 {
        font-size: 23px;
        font-weight: 750;
        margin-top: 32px;
        margin-bottom: 16px;
        color: var(--text-main);
        letter-spacing: 0.3px;
        position: relative;
        padding-left: 14px;
    }

    .rich-text h3::before {
        content: "";
        position: absolute;
        left: 0;
        top: 6px;
        bottom: 6px;
        width: 3px;
        border-radius: 3px;
        background: var(--accent);
    }

    .rich-text h4 {
        font-size: 18px;
        font-weight: 700;
        margin-top: 24px;
        margin-bottom: 12px;
        color: var(--text-main);
    }

    .rich-text p {
        margin-bottom: 18px;
        font-size: 16px;
    }

    .rich-text ul,
    .rich-text ol {
        margin-bottom: 20px;
        padding-left: 0;
        list-style: none;
    }

    .rich-text ul li {
        position: relative;
        padding-left: 24px;
        margin-bottom: 8px;
    }

    .rich-text ul li::before {
        content: "";
        position: absolute;
        left: 4px;
        top: 11px;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 8px rgba(34, 211, 238, 0.35);
    }

    .rich-text ol {
        counter-reset: rich-ol;
    }

    .rich-text ol li {
        position: relative;
        padding-left: 30px;
        margin-bottom: 8px;
        counter-increment: rich-ol;
    }

    .rich-text ol li::before {
        content: counter(rich-ol, decimal-leading-zero);
        position: absolute;
        left: 0;
        top: 2px;
        font-size: 13px;
        font-weight: 700;
        color: var(--accent);
        font-variant-numeric: tabular-nums;
    }

    .rich-text blockquote {
        border-left: 3px solid var(--accent);
        background: rgba(34, 211, 238, 0.05);
        padding: 16px 22px;
        border-radius: 0 12px 12px 0;
        color: var(--text-sub);
        margin: 26px 0;
        font-style: normal;
    }

    .rich-text blockquote p:last-child {
        margin-bottom: 0;
    }

    .rich-text img {
        max-width: 100%;
        border-radius: 12px;
        margin: 24px 0;
        border: 1px solid rgba(148, 163, 184, 0.1);
    }

    .rich-text a {
        color: var(--accent);
        text-decoration: underline;
        text-underline-offset: 4px;
        transition: opacity 0.2s;
    }

    .rich-text a:hover {
        opacity: 0.75;
    }

    .rich-text code {
        font-family: "SF Mono", Monaco, Consolas, "Courier New", monospace;
        background: rgba(148, 163, 184, 0.12);
        padding: 2px 7px;
        border-radius: 6px;
        font-size: 14px;
        color: #67e8f9;
    }

    .rich-text pre {
        background: rgba(15, 24, 42, 0.85);
        border: 1px solid rgba(148, 163, 184, 0.12);
        padding: 20px;
        border-radius: 12px;
        overflow-x: auto;
        line-height: 1.7;
        margin: 24px 0;
        font-size: 14px;
    }

    .rich-text pre code {
        background: transparent;
        padding: 0;
        color: var(--text-main);
    }

    .rich-text table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 15px;
    }

    .rich-text table th,
    .rich-text table td {
        border: 1px solid rgba(148, 163, 184, 0.15);
        padding: 12px 14px;
        text-align: left;
    }

    .rich-text table th {
        background: rgba(34, 211, 238, 0.06);
        color: var(--accent);
        font-weight: 600;
    }

    /* ===== 标签/分享 ===== */
    .article-tools {
        max-width: 780px;
        margin: 36px auto 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
        padding-top: 24px;
        border-top: 1px solid rgba(148, 163, 184, 0.1);
    }

    .tag-group {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }

    .tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        background: rgba(148, 163, 184, 0.07);
        border: 1px solid rgba(148, 163, 184, 0.14);
        border-radius: 999px;
        font-size: 13px;
        color: var(--text-sub);
        transition: var(--transition);
    }

    .tag:hover {
        border-color: rgba(34, 211, 238, 0.4);
        color: var(--accent);
    }

    .share-group {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .share-label {
        font-size: 13px;
        color: var(--text-muted);
    }

    .share-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 8px;
        border: 1px solid rgba(148, 163, 184, 0.2);
        color: var(--text-sub);
        background: rgba(148, 163, 184, 0.04);
        text-decoration: none;
        transition: var(--transition);
    }

    .share-btn:hover {
        color: var(--accent);
        border-color: rgba(34, 211, 238, 0.5);
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(34, 211, 238, 0.15);
    }

    /* ===== 返回按钮 ===== */
    .article-back {
        max-width: 780px;
        margin: 32px auto 0;
        text-align: center;
    }

    .article-back .btn {
        padding: 10px 30px;
        font-size: 14px;
    }

    /* ===== 空状态 ===== */
    .article-empty {
        max-width: 640px;
        margin: 80px auto 120px;
        text-align: center;
        background: rgba(148, 163, 184, 0.04);
        border: 1px solid rgba(148, 163, 184, 0.12);
        border-radius: 16px;
        padding: 64px 48px;
        box-shadow: var(--shadow-card);
    }

    .article-empty .empty-icon {
        width: 72px;
        height: 72px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: rgba(34, 211, 238, 0.08);
        border: 1px solid rgba(34, 211, 238, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 28px;
        color: var(--accent);
    }

    .article-empty h1 {
        font-size: 26px;
        font-weight: 700;
        margin-bottom: 12px;
    }

    .article-empty p {
        color: var(--text-sub);
        font-size: 15px;
        margin-bottom: 28px;
    }

    /* ===== 相关推荐 ===== */
    .related-wrap {
        padding: 72px 0 88px;
        margin-top: 40px;
        border-top: 1px solid rgba(148, 163, 184, 0.07);
        background: linear-gradient(180deg, transparent 0%, rgba(15, 24, 42, 0.35) 100%);
    }

    .section-head {
        display: flex;
        justify-content: space-between;
        align-items: flex-end;
        margin-bottom: 36px;
        gap: 20px;
        flex-wrap: wrap;
    }

    .section-badge {
        display: inline-block;
        font-size: 12px;
        font-weight: 700;
        color: var(--accent);
        letter-spacing: 2px;
        text-transform: uppercase;
        background: rgba(34, 211, 238, 0.08);
        padding: 4px 12px;
        border-radius: 999px;
        margin-bottom: 8px;
    }

    .section-head h2 {
        font-size: 30px;
        font-weight: 800;
        margin: 6px 0 0;
        letter-spacing: 0.5px;
    }

    .section-more {
        color: var(--text-sub);
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        transition: color 0.2s, transform 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .section-more:hover {
        color: var(--accent);
        transform: translateX(3px);
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .related-card {
        background: rgba(148, 163, 184, 0.05);
        border: 1px solid rgba(148, 163, 184, 0.12);
        border-radius: 16px;
        overflow: hidden;
        text-decoration: none;
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }

    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(34, 211, 238, 0.35);
    }

    .related-img {
        aspect-ratio: 16 / 10;
        overflow: hidden;
        background: var(--bg-layer);
    }

    .related-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .related-card:hover .related-img img {
        transform: scale(1.04);
    }

    .related-body {
        padding: 20px 22px 22px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }

    .cat-badge {
        align-self: flex-start;
        font-size: 12px;
        font-weight: 700;
        color: var(--accent-alt);
        background: rgba(245, 181, 68, 0.1);
        padding: 3px 12px;
        border-radius: 999px;
        letter-spacing: 0.3px;
    }

    .related-body h3 {
        font-size: 18px;
        font-weight: 650;
        color: var(--text-main);
        margin: 10px 0 8px;
        line-height: 1.45;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        letter-spacing: 0.3px;
    }

    .related-body p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.7;
        margin: 0 0 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .read-more {
        margin-top: auto;
        font-size: 13px;
        font-weight: 600;
        color: var(--accent);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap 0.25s;
    }

    .related-card:hover .read-more {
        gap: 10px;
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--bg-layer);
        border-top: 1px solid rgba(148, 163, 184, 0.1);
        padding: 72px 0 32px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 48px;
        margin-bottom: 48px;
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 14px;
        letter-spacing: 0.5px;
    }

    .footer-brand .brand-icon {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }

    .footer-desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 16px;
        max-width: 300px;
    }

    .social-mini {
        display: flex;
        gap: 8px;
    }

    .social-mini span {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: rgba(148, 163, 184, 0.08);
        border: 1px solid rgba(148, 163, 184, 0.16);
        color: var(--text-sub);
        font-size: 14px;
        transition: var(--transition);
        cursor: default;
    }

    .social-mini span:hover {
        color: var(--accent);
        border-color: rgba(34, 211, 238, 0.4);
        transform: translateY(-2px);
    }

    .footer-title {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 16px;
        letter-spacing: 0.5px;
        position: relative;
        padding-bottom: 8px;
    }

    .footer-title::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 24px;
        height: 2px;
        border-radius: 2px;
        background: var(--accent);
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        color: var(--text-sub);
        font-size: 14px;
        text-decoration: none;
        transition: color 0.2s, padding-left 0.2s;
        display: inline-block;
    }

    .footer-links a:hover {
        color: var(--accent);
        padding-left: 4px;
    }

    .footer-tip {
        background: rgba(34, 211, 238, 0.05);
        border: 1px solid rgba(34, 211, 238, 0.12);
        border-radius: 12px;
        padding: 14px 16px;
        font-size: 13px;
        color: var(--text-sub);
        line-height: 1.75;
    }

    .footer-tip strong {
        color: var(--accent);
        display: block;
        margin-bottom: 4px;
    }

    .footer-bottom {
        border-top: 1px solid rgba(148, 163, 184, 0.08);
        padding-top: 28px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        flex-wrap: wrap;
        font-size: 13px;
        color: var(--text-muted);
    }

    .footer-icp {
        color: var(--text-muted);
        font-family: var(--font-base);
    }

    /* ===== 底部固定条 ===== */
    .bottom-fixed-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 64px;
        z-index: 999;
        background: rgba(15, 24, 42, 0.9);
        backdrop-filter: blur(12px) saturate(140%);
        -webkit-backdrop-filter: blur(12px) saturate(140%);
        border-top: 1px solid rgba(148, 163, 184, 0.14);
        box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.3);
        transition: transform 0.4s ease, opacity 0.4s ease;
    }

    .bottom-fixed-bar.hidden {
        transform: translateY(100%);
        opacity: 0;
        pointer-events: none;
    }

    .bar-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        gap: 16px;
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .bar-text {
        font-size: 14px;
        color: var(--text-main);
        margin: 0;
        line-height: 1.5;
    }

    .bar-text strong {
        color: var(--accent);
    }

    .bar-actions {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .bar-actions .btn {
        height: 40px;
        padding: 0 20px;
        font-size: 14px;
        white-space: nowrap;
    }

    .bar-close {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        border: 1px solid rgba(148, 163, 184, 0.2);
        background: transparent;
        color: var(--text-muted);
        font-size: 13px;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .bar-close:hover {
        color: var(--text-main);
        border-color: rgba(148, 163, 184, 0.4);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1200px) {
        .mega-panel {
            width: 620px;
        }
    }

    @media (max-width: 992px) {
        .nav-wrap {
            order: 3;
            width: 100%;
            position: fixed;
            top: 72px;
            left: 0;
            background: rgba(7, 13, 24, 0.96);
            backdrop-filter: blur(16px);
            padding: 8px 16px 16px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            display: none;
        }

        .nav-wrap.open {
            display: block;
        }

        .nav-list {
            flex-direction: column;
            align-items: stretch;
            gap: 2px;
        }

        .nav-link {
            display: block;
            padding: 12px 14px;
        }

        .nav-link::after {
            left: 14px;
            right: auto;
            width: 28px;
            height: 2px;
        }

        .mega-panel {
            position: static;
            width: 100%;
            margin-top: 10px;
            opacity: 1;
            visibility: visible;
            transform: none;
            box-shadow: none;
            border-radius: 12px;
        }

        .mega-row {
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .header-inner {
            flex-wrap: wrap;
            position: relative;
        }

        .nav-toggle {
            display: inline-flex;
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 36px;
        }

        .related-grid {
            grid-template-columns: 1fr 1fr;
        }

        .article-card {
            padding: 32px 28px;
        }
    }

    @media (max-width: 768px) {
        body {
            padding-bottom: 72px;
        }

        .bottom-fixed-bar {
            height: 72px;
        }

        .bar-text {
            font-size: 12px;
        }

        .bar-actions .btn {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }

        .article-head h1 {
            font-size: 26px;
        }

        .article-head {
            padding: 4px 0 20px;
        }

        .article-meta {
            gap: 14px;
            font-size: 13px;
        }

        .article-card {
            padding: 24px 20px;
        }

        .breadcrumb-bar {
            padding: 16px 0 14px;
            font-size: 13px;
        }

        .article-tools {
            flex-direction: column;
            align-items: flex-start;
        }

        .related-wrap {
            padding: 56px 0 64px;
        }

        .section-head h2 {
            font-size: 24px;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }

        .footer-bottom {
            flex-direction: column;
            text-align: center;
            gap: 8px;
        }

        .rich-text {
            font-size: 15px;
        }

        .rich-text h3 {
            font-size: 20px;
        }

        .article-empty {
            margin: 60px auto 80px;
            padding: 48px 28px;
        }
    }

    @media (max-width: 576px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }

        .brand-logo {
            font-size: 17px;
        }

        .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }

        .mega-btn {
            padding: 8px 12px;
            font-size: 13px;
        }

        .related-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .article-head h1 {
            font-size: 22px;
        }

        .article-meta {
            flex-direction: column;
            gap: 8px;
        }

        .bar-text {
            max-width: 50%;
        }

        .bar-actions {
            gap: 6px;
        }

        .article-card {
            padding: 20px 16px;
        }

        .rich-text blockquote {
            padding: 12px 16px;
        }
    }

/* roulang page: category2 */
:root {
            --bg-primary: #070D18;
            --bg-secondary: #0F182A;
            --bg-tertiary: #0C1424;
            --bg-card: rgba(148, 163, 184, 0.06);
            --border-color: rgba(148, 163, 184, 0.18);
            --border-light: rgba(148, 163, 184, 0.28);
            --accent: #22D3EE;
            --accent-rgb: 34, 211, 238;
            --accent-dark: rgba(34, 211, 238, 0.15);
            --amber: #F5B544;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --success: #2DD4BF;
            --warning: #F97316;
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.20);
            --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.35);
            --glow-btn: 0 0 20px rgba(34, 211, 238, 0.28);
            --glow-hover: 0 0 36px rgba(34, 211, 238, 0.46);
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: radial-gradient(ellipse at top left, #0C1424 0%, #070D18 62%, #060B14 100%) fixed;
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            padding-bottom: 64px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            vertical-align: middle;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-pad {
            padding: 96px 0;
        }

        .text-accent {
            color: var(--accent) !important;
        }

        .text-amber {
            color: var(--amber) !important;
        }

        .btn {
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid rgba(var(--accent-rgb), 0.7);
            outline-offset: 2px;
        }

        .btn-accent {
            background: linear-gradient(135deg, #22D3EE, #18AABC);
            color: #06121A;
            border: none;
            box-shadow: var(--glow-btn);
        }

        .btn-accent:hover,
        .btn-accent:active {
            background: linear-gradient(135deg, #38E1FA, #22D3EE);
            color: #06121A;
            box-shadow: var(--glow-hover);
            transform: translateY(-2px);
        }

        .btn-outline-accent {
            background: transparent;
            border: 1px solid rgba(var(--accent-rgb), 0.55);
            color: var(--accent);
        }

        .btn-outline-accent:hover {
            background: rgba(var(--accent-rgb), 0.12);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(var(--accent-rgb), 0.2);
        }

        .btn-lg {
            height: 52px;
            padding: 0 40px;
            font-size: 16px;
            border-radius: 12px;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(var(--accent-rgb), 0.12);
            border: 1px solid rgba(var(--accent-rgb), 0.3);
            color: var(--accent);
        }

        /* ===== Header ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            z-index: 1080;
            background: rgba(7, 13, 24, 0.72);
            backdrop-filter: blur(14px) saturate(140%);
            -webkit-backdrop-filter: blur(14px) saturate(140%);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(7, 13, 24, 0.92);
            border-bottom-color: rgba(148, 163, 184, 0.15);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            position: relative;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: var(--accent);
        }

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.25), rgba(var(--accent-rgb), 0.05));
            border: 1px solid rgba(var(--accent-rgb), 0.4);
            color: var(--accent);
            font-size: 16px;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .nav-link {
            position: relative;
            display: inline-block;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .nav-link:hover {
            color: var(--accent);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mega-trigger {
            position: relative;
        }

        .mega-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 10px;
            border: 1px solid rgba(148, 163, 184, 0.25);
            background: rgba(148, 163, 184, 0.08);
            color: var(--text-primary);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .mega-btn:hover {
            border-color: rgba(var(--accent-rgb), 0.5);
            color: var(--accent);
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 16px);
            right: 0;
            width: 720px;
            border-radius: var(--radius-lg);
            background: rgba(12, 20, 36, 0.96);
            backdrop-filter: blur(18px) saturate(150%);
            border: 1px solid rgba(148, 163, 184, 0.22);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
            padding: 24px;
        }

        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-row {
            display: grid;
            grid-template-columns: 1fr 1.3fr 0.9fr;
            gap: 24px;
        }

        .mega-col h5 {
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
        }

        .mega-link {
            display: block;
            padding: 8px 10px;
            color: var(--text-secondary);
            font-size: 14px;
            border-radius: 8px;
            margin-bottom: 2px;
        }

        .mega-link:hover {
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.06);
        }

        .mega-list-item {
            display: block;
            padding: 10px 10px;
            border-radius: 8px;
            margin-bottom: 4px;
            transition: var(--transition);
        }

        .mega-list-item:hover {
            background: rgba(148, 163, 184, 0.06);
        }

        .mega-list-item .t {
            display: block;
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
        }

        .mega-list-item .d {
            font-size: 12px;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        .mega-card {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(148, 163, 184, 0.15);
            position: relative;
            height: 150px;
        }

        .mega-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.8);
        }

        .mega-card-text {
            position: absolute;
            bottom: 8px;
            left: 8px;
            right: 8px;
            background: rgba(7, 13, 24, 0.75);
            border-radius: 8px;
            padding: 6px 12px;
            font-size: 13px;
            color: #fff;
            backdrop-filter: blur(4px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 170px 0 90px;
            background-image: linear-gradient(rgba(7, 13, 24, 0.82), rgba(7, 13, 24, 0.92)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 75% 30%, rgba(34, 211, 238, 0.12), transparent 55%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(var(--accent-rgb), 0.1);
            border: 1px solid rgba(var(--accent-rgb), 0.3);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.8);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }

        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .page-hero h1 .hl {
            background: linear-gradient(135deg, var(--accent), #8CE6F5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-trust {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .hero-trust i {
            color: var(--accent);
            font-size: 15px;
        }

        /* ===== Quick Stats ===== */
        .quick-stats {
            position: relative;
            z-index: 5;
            margin-top: -1px;
            padding: 36px 0;
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: rgba(15, 24, 42, 0.85);
            border: 1px solid rgba(148, 163, 184, 0.14);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
        }

        .stat-item {
            text-align: center;
        }

        .stat-item .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== Update Cards ===== */
        .section-head {
            margin-bottom: 44px;
        }

        .section-head .kicker {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-head .kicker::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 750;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 600px;
        }

        .featured-card {
            display: flex;
            background: var(--bg-card);
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .featured-card:hover {
            border-color: rgba(var(--accent-rgb), 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .featured-card .fc-media {
            flex: 0 0 46%;
            min-height: 280px;
            position: relative;
            overflow: hidden;
        }

        .featured-card .fc-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .featured-card:hover .fc-media img {
            transform: scale(1.04);
        }

        .featured-card .fc-body {
            padding: 36px 40px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-card .fc-label {
            align-self: flex-start;
            margin-bottom: 14px;
        }

        .featured-card h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .featured-card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 22px;
        }

        .fc-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            color: var(--text-muted);
            font-size: 13px;
            font-variant-numeric: tabular-nums;
            margin-bottom: 18px;
        }

        .fc-meta i {
            color: var(--accent);
            margin-right: 5px;
        }

        /* Grid Cards */
        .grid-cards .row {
            margin: -12px;
        }

        .grid-cards [class*="col-"] {
            padding: 12px;
        }

        .update-card {
            background: var(--bg-card);
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .update-card:hover {
            border-color: rgba(var(--accent-rgb), 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .update-card .uc-media {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .update-card .uc-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            filter: saturate(0.85);
        }

        .update-card:hover .uc-media img {
            transform: scale(1.05);
            filter: saturate(1);
        }

        .update-card .uc-body {
            padding: 24px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .update-card .uc-badge {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(245, 181, 68, 0.12);
            border: 1px solid rgba(245, 181, 68, 0.3);
            color: var(--amber);
            margin-bottom: 12px;
        }

        .update-card h4 {
            font-size: 18px;
            font-weight: 650;
            color: #fff;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .update-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .uc-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .uc-foot a {
            color: var(--accent);
            font-weight: 600;
        }

        .uc-foot a:hover {
            text-decoration: underline;
        }

        /* ===== Asymmetric Layout ===== */
        .asym-section {
            background: var(--bg-secondary);
            padding: 96px 0;
            position: relative;
        }

        .asym-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 28px;
            align-items: stretch;
        }

        .timeline-card {
            background: rgba(148, 163, 184, 0.04);
            border: 1px solid rgba(148, 163, 184, 0.12);
            border-radius: var(--radius-lg);
            padding: 34px 36px;
        }

        .timeline-card h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 26px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .timeline-card h3 i {
            color: var(--accent);
        }

        .tl-item {
            position: relative;
            padding-left: 24px;
            padding-bottom: 22px;
            border-left: 1px solid rgba(148, 163, 184, 0.22);
        }

        .tl-item:last-child {
            padding-bottom: 0;
        }

        .tl-dot {
            position: absolute;
            left: -7px;
            top: 4px;
            width: 13px;
            height: 13px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid rgba(34, 211, 238, 0.25);
        }

        .tl-date {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.5px;
        }

        .tl-text {
            font-size: 15px;
            color: var(--text-primary);
            margin-top: 4px;
            line-height: 1.75;
        }

        .reminder-card {
            background: linear-gradient(145deg, rgba(var(--accent-rgb), 0.1), rgba(148, 163, 184, 0.03));
            border: 1px solid rgba(var(--accent-rgb), 0.3);
            border-radius: var(--radius-lg);
            padding: 36px 34px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-shadow: var(--shadow-card);
        }

        .reminder-card h4 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .reminder-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .reminder-card .btn {
            align-self: flex-start;
        }

        /* ===== Category Entry ===== */
        .cat-entry-section {
            padding: 96px 0;
        }

        .cat-entry-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .cat-entry-card {
            flex: 0.85;
            min-width: 260px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(148, 163, 184, 0.15);
            background: var(--bg-card);
            padding: 32px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .cat-entry-card:nth-child(2) {
            flex: 1.3;
            background: rgba(var(--accent-rgb), 0.06);
            border-color: rgba(var(--accent-rgb), 0.28);
        }

        .cat-entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(var(--accent-rgb), 0.4);
        }

        .cat-entry-card .ce-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            background: rgba(var(--accent-rgb), 0.1);
            border: 1px solid rgba(var(--accent-rgb), 0.25);
            margin-bottom: 18px;
        }

        .cat-entry-card:nth-child(3) .ce-icon {
            color: var(--amber);
            background: rgba(245, 181, 68, 0.12);
            border-color: rgba(245, 181, 68, 0.3);
        }

        .cat-entry-card h4 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .cat-entry-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .cat-entry-card .ce-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
        }

        .cat-entry-card .ce-link:hover {
            text-decoration: underline;
        }

        .cat-entry-card:nth-child(3) .ce-link {
            color: var(--amber);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-secondary);
            padding: 96px 0;
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid rgba(148, 163, 184, 0.14);
            border-radius: 0 !important;
        }

        .accordion-button {
            background: transparent !important;
            color: var(--text-primary) !important;
            box-shadow: none !important;
            font-size: 17px;
            font-weight: 600;
            padding: 24px 38px 24px 16px;
            position: relative;
            transition: var(--transition);
        }

        .accordion-button:hover {
            color: var(--accent) !important;
        }

        .accordion-button:focus {
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--accent) !important;
        }

        .accordion-button::after {
            display: none;
        }

        .faq-icon {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid rgba(148, 163, 184, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-secondary);
            border-radius: 1px;
            transition: var(--transition);
        }

        .faq-icon::before {
            width: 10px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 10px;
        }

        .accordion-button:not(.collapsed) .faq-icon {
            border-color: var(--accent);
        }

        .accordion-button:not(.collapsed) .faq-icon::before,
        .accordion-button:not(.collapsed) .faq-icon::after {
            background: var(--accent);
        }

        .accordion-button:not(.collapsed) .faq-icon::after {
            transform: scaleY(0);
        }

        .accordion-body {
            padding: 4px 16px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-accent-line {
            position: relative;
        }

        .faq-accent-line::before {
            content: "";
            position: absolute;
            left: 0;
            top: 18px;
            bottom: 18px;
            width: 2px;
            background: var(--accent);
            border-radius: 2px;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .faq-accent-line.active::before {
            opacity: 1;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-image: linear-gradient(rgba(7, 13, 24, 0.88), rgba(7, 13, 24, 0.94)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            text-align: center;
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .cta-inner p {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .cta-inner .btn {
            box-shadow: var(--glow-btn);
            animation: glowPulse 3s ease-in-out infinite;
        }

        @keyframes glowPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.28);
            }
            50% {
                box-shadow: 0 0 44px rgba(var(--accent-rgb), 0.5);
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding: 72px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .social-mini {
            display: flex;
            gap: 10px;
        }

        .social-mini span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(148, 163, 184, 0.08);
            border: 1px solid rgba(148, 163, 184, 0.15);
            color: var(--text-secondary);
            font-size: 14px;
            cursor: default;
            transition: var(--transition);
        }

        .social-mini span:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-tip {
            background: rgba(148, 163, 184, 0.06);
            border: 1px solid rgba(148, 163, 184, 0.14);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .footer-tip strong {
            color: var(--text-primary);
            font-weight: 700;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-copy {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-icp {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Bottom Bar ===== */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(7, 13, 24, 0.88);
            backdrop-filter: blur(16px) saturate(140%);
            -webkit-backdrop-filter: blur(16px) saturate(140%);
            border-top: 1px solid rgba(148, 163, 184, 0.18);
            z-index: 1070;
            display: flex;
            align-items: center;
        }

        .bottom-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .bb-text {
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .bb-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .bb-actions .btn {
            height: 38px;
            padding: 0 20px;
            font-size: 14px;
        }

        .bb-close {
            background: transparent;
            border: none;
            color: var(--text-muted);
            width: 30px;
            height: 30px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            font-size: 14px;
        }

        .bb-close:hover {
            color: #fff;
            background: rgba(148, 163, 184, 0.12);
        }

        .bottom-bar.hidden {
            display: none;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-primary);
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(148, 163, 184, 0.3);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(148, 163, 184, 0.5);
        }

        ::selection {
            background: rgba(var(--accent-rgb), 0.35);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .mega-panel {
                width: 660px;
            }
        }

        @media (max-width: 991.98px) {
            .nav-wrap {
                order: 3;
                width: 100%;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(7, 13, 24, 0.96);
                border-bottom: 1px solid rgba(148, 163, 184, 0.12);
                padding: 8px 20px;
                display: none;
            }

            .nav-wrap.open {
                display: block;
            }

            .nav-list {
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 2px;
            }

            .nav-link {
                white-space: nowrap;
                font-size: 14px;
                padding: 8px 14px;
            }

            .nav-link::after {
                left: 14px;
                right: 14px;
            }

            .header-inner {
                flex-wrap: wrap;
            }

            .mega-panel {
                position: fixed;
                top: auto;
                left: 12px;
                right: 12px;
                width: auto;
                bottom: 76px;
                max-height: calc(100vh - 120px);
                overflow-y: auto;
            }

            .mega-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .mega-card {
                height: 100px;
            }

            .featured-card {
                flex-direction: column;
            }

            .featured-card .fc-media {
                flex: none;
                min-height: 220px;
                width: 100%;
            }

            .asym-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .cat-entry-row {
                flex-direction: column;
            }

            .cat-entry-card,
            .cat-entry-card:nth-child(2) {
                flex: 1;
                min-width: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .page-hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                padding-bottom: 72px;
            }

            .section-pad,
            .asym-section,
            .faq-section,
            .cat-entry-section,
            .cta-section {
                padding: 64px 0;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }

            .mega-btn {
                padding: 8px 12px;
                font-size: 13px;
            }

            .mega-btn span {
                display: none;
            }

            .page-hero {
                padding: 140px 0 70px;
            }

            .page-hero h1 {
                font-size: 32px;
                line-height: 1.3;
            }

            .hero-sub {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-trust {
                gap: 14px;
                font-size: 13px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                padding: 24px;
            }

            .stat-item .num {
                font-size: 28px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .featured-card .fc-body {
                padding: 26px 24px;
            }

            .featured-card h3 {
                font-size: 20px;
            }

            .timeline-card {
                padding: 24px;
            }

            .reminder-card {
                padding: 26px 24px;
            }

            .accordion-button {
                font-size: 15px;
                padding: 20px 36px 20px 12px;
            }

            .cta-inner h2 {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .bottom-bar {
                height: 72px;
            }

            .bb-text {
                font-size: 12px;
                max-width: 40vw;
            }

            .bb-actions .btn {
                height: 36px;
                padding: 0 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 575.98px) {
            .brand-logo {
                font-size: 16px;
            }

            .brand-logo span:last-child {
                max-width: 120px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .nav-right {
                gap: 6px;
            }

            .page-hero h1 {
                font-size: 27px;
            }

            .hero-trust {
                flex-direction: column;
                gap: 8px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                padding: 18px;
            }

            .stat-item .num {
                font-size: 24px;
            }

            .update-card .uc-body {
                padding: 20px;
            }

            .fc-meta {
                flex-wrap: wrap;
                gap: 10px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
    --bg-primary: #070D18;
    --bg-secondary: #0F182A;
    --bg-card: rgba(148,163,184,0.06);
    --border-card: rgba(148,163,184,0.18);
    --accent: #22D3EE;
    --accent-2: #F5B544;
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --success: #2DD4BF;
    --warning: #F97316;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --shadow-card: 0 6px 24px rgba(0,0,0,0.20);
    --shadow-hover: 0 14px 40px rgba(0,0,0,0.35);
    --glow-primary: 0 0 20px rgba(34,211,238,0.30);
    --glow-hover: 0 0 36px rgba(34,211,238,0.50);
    --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-stack);
    background: radial-gradient(ellipse at 50% -20%, rgba(34,211,238,0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 30%, rgba(245,181,68,0.04) 0%, transparent 40%), var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 16px;
    padding-top: 72px;
    padding-bottom: 64px;
    overflow-x: hidden;
}
a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.25s ease;
}
a:hover {
    color: var(--accent);
}
img {
    max-width: 100%;
    height: auto;
}
button {
    font-family: inherit;
}
.container {
    max-width: 1200px;
    padding-left: 20px;
    padding-right: 20px;
}
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: 0.5px;
    margin: 0;
}
.section-title-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 40px;
}
.section-title-wrap .sec-tag {
    font-size: 12px;
    color: var(--accent);
    background: rgba(34,211,238,0.10);
    border: 1px solid rgba(34,211,238,0.25);
    border-radius: 999px;
    padding: 4px 14px;
    letter-spacing: 1px;
    font-weight: 600;
}
.section-title-wrap .sec-index {
    font-size: 48px;
    font-weight: 800;
    color: rgba(148,163,184,0.12);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}
.section-subhead {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 560px;
    margin-top: 8px;
}

/* Header 导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(7,13,24,0.72);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.header-scrolled {
    background: rgba(7,13,24,0.88);
    border-bottom-color: var(--border-card);
    box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary) !important;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.brand-logo:hover {
    color: var(--accent) !important;
}
.brand-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), rgba(34,211,238,0.2));
    border-radius: 10px;
    color: #070D18;
    font-size: 17px;
    flex-shrink: 0;
}
.nav-wrap {
    display: flex;
    align-items: center;
}
.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav-list li {
    margin: 0;
}
.nav-link {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 4px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.nav-link:hover {
    color: var(--accent);
}
.nav-link:hover::after {
    transform: scaleX(1);
}
.nav-link.active {
    color: var(--accent);
    font-weight: 600;
}
.nav-link.active::after {
    transform: scaleX(1);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}
.mega-trigger {
    position: relative;
}
.mega-btn {
    background: rgba(148,163,184,0.10);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.mega-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 16px rgba(34,211,238,0.15);
}
.mega-panel {
    position: absolute;
    top: calc(100% + 16px);
    right: 0;
    width: 620px;
    max-width: calc(100vw - 40px);
    background: rgba(12,20,36,0.95);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0,0,0,0.5);
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    z-index: 1001;
}
.mega-trigger:hover .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.mega-row {
    display: grid;
    grid-template-columns: 1fr 1fr 0.9fr;
    gap: 20px;
}
.mega-col h5 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}
.mega-link {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    padding: 6px 0;
    border-radius: 6px;
    transition: all 0.2s ease;
}
.mega-link:hover {
    color: var(--accent);
    padding-left: 6px;
}
.mega-list-item {
    display: block;
    padding: 8px 0;
    border-bottom: 1px solid rgba(148,163,184,0.08);
}
.mega-list-item .t {
    display: block;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    line-height: 1.5;
}
.mega-list-item .d {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 2px;
}
.mega-card {
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--border-card);
    height: 100%;
    display: flex;
    align-items: flex-end;
}
.mega-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    filter: brightness(0.8);
}

/* 移动端导航 */
.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* Page Hero */
.page-hero {
    position: relative;
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(0deg, rgba(7,13,24,0.75) 0%, rgba(7,13,24,0.55) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    border-bottom: 1px solid var(--border-card);
    padding: 80px 0 60px;
}
.hero-content {
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(245,181,68,0.12);
    border: 1px solid rgba(245,181,68,0.30);
    color: var(--accent-2);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 24px;
}
.hero-badge i {
    font-size: 10px;
    color: var(--accent-2);
}
.page-hero h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.page-hero p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 28px;
}
.hero-path {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(12,20,36,0.6);
    border: 1px solid var(--border-card);
    border-radius: 999px;
    padding: 8px 24px;
    font-size: 13px;
    color: var(--text-secondary);
    backdrop-filter: blur(8px);
}
.hero-path i {
    color: var(--accent);
    font-size: 12px;
}
.hero-path .sep {
    color: var(--text-muted);
    margin: 0 2px;
}
.hero-path .current {
    color: var(--text-primary);
    font-weight: 600;
}

/* Page Main 主体 */
.page-main {
    padding: 72px 0 40px;
}

/* 场景快速入口 quick-nav */
.quick-nav {
    padding: 72px 0 16px;
}
.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.quick-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.quick-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--accent);
    transition: height 0.3s ease;
}
.quick-card:hover {
    background: rgba(148,163,184,0.09);
    border-color: rgba(34,211,238,0.35);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.quick-card:hover::before {
    height: 100%;
}
.quick-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(34,211,238,0.15), rgba(34,211,238,0.03));
    border: 1px solid rgba(34,211,238,0.20);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 20px;
    margin-bottom: 16px;
}
.quick-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.quick-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

/* FAQ Section */
.faq-section {
    padding: 72px 0;
    background: rgba(15,24,42,0.4);
    border-top: 1px solid rgba(148,163,184,0.08);
    border-bottom: 1px solid rgba(148,163,184,0.08);
}
.faq-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 48px;
    align-items: start;
}
.faq-left {
    position: sticky;
    top: 96px;
}
.faq-left .faq-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}
.faq-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.faq-tag:hover {
    color: var(--accent);
    border-color: rgba(34,211,238,0.40);
    background: rgba(34,211,238,0.06);
}
.faq-tag i {
    font-size: 11px;
    color: var(--accent);
}
.faq-note {
    background: rgba(245,181,68,0.08);
    border: 1px solid rgba(245,181,68,0.20);
    border-radius: var(--radius-md);
    padding: 18px 18px;
    margin-top: 24px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.faq-note strong {
    color: var(--accent-2);
    display: block;
    margin-bottom: 4px;
    font-size: 14px;
}
.faq-accordion {
    border: 0;
}
.faq-item {
    background: rgba(148,163,184,0.03);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px;
    padding: 0;
    transition: all 0.3s ease;
}
.faq-item .accordion-button {
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    padding: 18px 20px;
    box-shadow: none;
    border: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    border-radius: var(--radius-md) !important;
    transition: color 0.3s ease;
}
.faq-item .accordion-button::after {
    display: none;
}
.faq-item .accordion-button:focus {
    box-shadow: none;
    border: 0;
    outline: none;
}
.faq-item .accordion-button:not(.collapsed) {
    background: rgba(34,211,238,0.04);
    color: var(--accent);
}
.faq-q-num {
    width: 32px;
    height: 32px;
    background: rgba(34,211,238,0.10);
    border: 1px solid rgba(34,211,238,0.20);
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.faq-icon {
    position: relative;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    margin-left: auto;
    border: 1px solid var(--accent);
    border-radius: 50%;
    transition: all 0.3s ease;
}
.faq-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 1.5px;
    background: var(--accent);
}
.faq-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(90deg);
    width: 10px;
    height: 1.5px;
    background: var(--accent);
    transition: transform 0.3s ease;
}
.faq-item .accordion-button:not(.collapsed) .faq-icon::after {
    transform: translate(-50%, -50%) rotate(0deg);
}
.faq-item .accordion-button:not(.collapsed) .faq-icon {
    background: rgba(34,211,238,0.15);
}
.faq-body {
    padding: 0 20px 20px 64px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    border-top: 0;
}
.faq-item.faq-open {
    border-color: rgba(34,211,238,0.30);
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.faq-item.faq-open .accordion-button {
    border-left: 2px solid var(--accent);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

/* 文章列表区 */
.article-section {
    padding: 72px 0;
}
.article-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.35s ease;
    height: 100%;
}
.article-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34,211,238,0.35);
    box-shadow: var(--shadow-hover);
    background: rgba(148,163,184,0.07);
}
.article-card .thumb {
    position: relative;
    overflow: hidden;
    height: 180px;
    background: var(--bg-secondary);
}
.article-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0.2) brightness(0.85);
    transition: transform 0.4s ease, filter 0.4s ease;
}
.article-card:hover .thumb img {
    transform: scale(1.05);
    filter: grayscale(0) brightness(1);
}
.article-card .thumb .cat-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(7,13,24,0.75);
    border: 1px solid rgba(34,211,238,0.30);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
}
.article-card .body {
    padding: 20px 20px 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-card .body .meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.article-card .body h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 8px;
}
.article-card .body h3 a {
    color: var(--text-primary);
    transition: color 0.25s ease;
}
.article-card .body h3 a:hover {
    color: var(--accent);
}
.article-card .body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-card .body .read-more {
    margin-top: auto;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.25s ease;
}
.article-card .body .read-more:hover {
    gap: 10px;
}

/* 流程步骤区 */
.process-section {
    padding: 72px 0;
    background: rgba(15,24,42,0.4);
    border-top: 1px solid rgba(148,163,184,0.08);
    border-bottom: 1px solid rgba(148,163,184,0.08);
}
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 28px;
}
.process-step {
    position: relative;
    text-align: center;
    padding: 24px 16px;
}
.process-step .step-num {
    width: 44px;
    height: 44px;
    margin: 0 auto 16px;
    background: rgba(34,211,238,0.10);
    border: 1px solid rgba(34,211,238,0.30);
    color: var(--accent);
    font-size: 18px;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.process-step h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}
.process-step p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}
.process-step::after {
    content: '';
    position: absolute;
    top: 45px;
    right: -12px;
    width: 24px;
    height: 1px;
    background: rgba(34,211,238,0.30);
}
.process-step:last-child::after {
    display: none;
}

/* CTA 区 */
.cta-section {
    padding: 80px 0;
    position: relative;
    background: linear-gradient(135deg, rgba(7,13,24,0.85) 0%, rgba(7,13,24,0.70) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    border-bottom: 1px solid var(--border-card);
}
.cta-inner {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 14px;
}
.cta-inner p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 28px;
}
.cta-btns {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.btn-custom {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-primary-glow {
    background: var(--accent);
    color: #070D18 !important;
    box-shadow: var(--glow-primary);
}
.btn-primary-glow:hover {
    box-shadow: var(--glow-hover);
    transform: translateY(-2px);
    color: #070D18 !important;
}
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-card);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(34,211,238,0.06);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(148,163,184,0.08);
    padding: 64px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 14px;
}
.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}
.social-mini {
    display: flex;
    gap: 8px;
}
.social-mini span {
    width: 36px;
    height: 36px;
    background: rgba(148,163,184,0.08);
    border: 1px solid var(--border-card);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.social-mini span:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(34,211,238,0.08);
}
.footer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 6px;
}
.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.25s ease;
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-tip {
    background: rgba(34,211,238,0.05);
    border: 1px solid rgba(34,211,238,0.15);
    border-radius: var(--radius-md);
    padding: 16px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}
.footer-tip strong {
    color: var(--accent);
    display: block;
    margin-bottom: 4px;
}
.footer-bottom {
    border-top: 1px solid rgba(148,163,184,0.08);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}
.footer-copy {
    font-size: 13px;
}
.footer-icp {
    font-size: 12px;
    color: var(--text-muted);
}

/* 底部固定转化条 */
.bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(10,17,30,0.82);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    border-top: 1px solid rgba(148,163,184,0.12);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}
.bottom-bar-inner {
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.bottom-bar-text {
    font-size: 14px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}
.bottom-bar-text i {
    color: var(--accent);
}
.bottom-bar-text span {
    color: var(--text-secondary);
    font-size: 13px;
}
.bottom-bar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.btn-compact {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 40px;
    padding: 0 22px;
    background: var(--accent);
    color: #070D18 !important;
    font-size: 14px;
    font-weight: 700;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 16px rgba(34,211,238,0.25);
    white-space: nowrap;
}
.btn-compact:hover {
    box-shadow: 0 0 28px rgba(34,211,238,0.45);
    transform: translateY(-1px);
}
.bar-close {
    background: transparent;
    border: 0;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    padding: 4px 6px;
    transition: color 0.25s ease;
}
.bar-close:hover {
    color: var(--text-primary);
}

/* 返回顶部 */
.back-top {
    position: fixed;
    right: 24px;
    bottom: 88px;
    width: 40px;
    height: 40px;
    background: rgba(12,20,36,0.85);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
}
.back-top.show {
    opacity: 1;
    visibility: visible;
}
.back-top:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* 响应式 */
@media (max-width: 992px) {
    .nav-wrap {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(7,13,24,0.97);
        border-bottom: 1px solid var(--border-card);
        padding: 16px 20px;
        flex-direction: column;
        align-items: flex-start;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        z-index: 999;
        backdrop-filter: blur(16px);
    }
    .nav-wrap.open {
        transform: translateY(0);
    }
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    .nav-list li {
        width: 100%;
    }
    .nav-link {
        width: 100%;
        padding: 10px 0;
        border-bottom: 1px solid rgba(148,163,184,0.06);
    }
    .nav-link::after {
        display: none;
    }
    .nav-link.active {
        background: rgba(34,211,238,0.06);
        padding-left: 12px;
        border-radius: 8px;
    }
    .mega-trigger {
        width: 100%;
        margin-top: 12px;
    }
    .mega-btn {
        width: 100%;
        justify-content: center;
    }
    .mega-panel {
        position: static;
        width: 100%;
        max-width: none;
        margin-top: 12px;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 1px solid var(--border-card);
        background: rgba(15,24,42,0.95);
    }
    .mega-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .nav-toggle {
        display: flex;
    }
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .faq-left {
        position: static;
    }
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .process-step::after {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    body {
        padding-bottom: 72px;
    }
    .page-hero {
        min-height: 340px;
        padding: 60px 0 44px;
    }
    .page-hero h1 {
        font-size: 28px;
    }
    .page-hero p {
        font-size: 15px;
    }
    .hero-path {
        flex-wrap: wrap;
        justify-content: center;
        padding: 8px 16px;
        font-size: 12px;
    }
    .section-title-wrap {
        flex-direction: row;
        gap: 12px;
    }
    .section-title-wrap .sec-index {
        font-size: 36px;
    }
    .quick-grid {
        grid-template-columns: 1fr;
    }
    .article-grid {
        grid-template-columns: 1fr;
    }
    .faq-body {
        padding-left: 20px;
    }
    .cta-inner h2 {
        font-size: 24px;
    }
    .cta-btns {
        flex-direction: column;
        width: 100%;
    }
    .btn-custom {
        width: 100%;
        justify-content: center;
    }
    .bottom-bar {
        height: 72px;
    }
    .bottom-bar-text {
        font-size: 13px;
    }
    .bottom-bar-text span {
        display: none;
    }
    .btn-compact {
        padding: 0 16px;
        font-size: 13px;
        height: 40px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}
@media (max-width: 576px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .brand-logo {
        font-size: 17px;
    }
    .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 15px;
    }
    .section-title-wrap {
        align-items: flex-end;
    }
    .section-title-wrap .sec-index {
        font-size: 28px;
    }
    .process-grid {
        grid-template-columns: 1fr;
    }
    .article-card .thumb {
        height: 150px;
    }
    .bottom-bar-text {
        font-size: 12px;
    }
    .btn-compact {
        min-width: 120px;
    }
    .back-top {
        right: 14px;
        bottom: 84px;
    }
}