/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --primary-dark: #1E3A5F;
            --secondary: #60A5FA;
            --accent: #7C3AED;
            --canvas: #F6F9FE;
            --surface: #FFFFFF;
            --surface-soft: #EAF2FF;
            --text: #334155;
            --muted: #64748B;
            --border: #DCE6F3;
            --success: #16845B;
            --warning: #B7791F;
            --danger: #C2414B;
            --radius-sm: 12px;
            --radius: 18px;
            --radius-lg: 26px;
            --shadow: 0 14px 36px rgba(30, 58, 95, .08);
            --shadow-hover: 0 20px 46px rgba(37, 99, 235, .14);
            --sidebar: 248px;
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 86px;
        }

        body {
            margin: 0;
            overflow-x: hidden;
            color: var(--text);
            background: var(--canvas);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body.modal-open {
            overflow: hidden;
        }

        button, input, select, textarea {
            font: inherit;
        }

        button, a {
            -webkit-tap-highlight-color: transparent;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button {
            border: 0;
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(37, 99, 235, .28);
            outline-offset: 3px;
        }

        .site-shell {
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            inset: 0 auto 0 0;
            z-index: 50;
            width: var(--sidebar);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            padding: 24px 18px;
            background: rgba(255,255,255,.97);
            border-right: 1px solid var(--border);
            box-shadow: 8px 0 30px rgba(30,58,95,.035);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            min-height: 54px;
            color: var(--primary-dark);
        }

        .brand-mark {
            flex: 0 0 auto;
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            border-radius: 13px;
            color: #fff;
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .04em;
            background: var(--primary);
            box-shadow: 0 9px 22px rgba(37,99,235,.23);
        }

        .brand-copy {
            min-width: 0;
            font-weight: 900;
            font-size: 15px;
            line-height: 1.35;
        }

        .brand-copy small {
            display: block;
            margin-top: 3px;
            color: var(--muted);
            font-size: 11px;
            font-weight: 600;
        }

        .side-nav {
            display: grid;
            gap: 8px;
            margin-top: 38px;
        }

        .nav-link {
            position: relative;
            min-height: 50px;
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 11px 13px;
            border-radius: 13px;
            color: #526277;
            font-size: 14px;
            font-weight: 700;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }

        .nav-link svg {
            width: 21px;
            height: 21px;
            flex: 0 0 auto;
        }

        .nav-link:hover {
            color: var(--primary);
            background: #F1F6FF;
            transform: translateX(2px);
        }

        .nav-link.active {
            color: #174EA6;
            background: var(--surface-soft);
        }

        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 3px;
            border-radius: 999px;
            background: var(--primary);
        }

        .sidebar-bottom {
            margin-top: auto;
            padding: 17px 14px;
            border: 1px solid var(--border);
            border-radius: 16px;
            background: #F9FBFF;
        }

        .sidebar-bottom p {
            margin: 8px 0 0;
            color: var(--muted);
            font-size: 12px;
            line-height: 1.65;
        }

        .age-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 5px 10px;
            border: 1px solid #F4D8A5;
            border-radius: 999px;
            color: #8A5A12;
            background: #FFF8E8;
            font-size: 12px;
            font-weight: 800;
        }

        .main-area {
            min-height: 100vh;
            margin-left: var(--sidebar);
        }

        .mobile-header {
            display: none;
        }

        .content-container {
            width: min(100% - 48px, 1280px);
            margin-inline: auto;
        }

        .section {
            padding-block: var(--section-space);
        }

        .section-tight {
            padding-block: 72px;
        }

        .section-head {
            max-width: 740px;
            margin-bottom: 34px;
        }

        .section-head h2 {
            margin: 12px 0 13px;
            color: var(--primary-dark);
            font-size: clamp(28px, 3vw, 36px);
            line-height: 1.25;
            font-weight: 900;
            letter-spacing: -.025em;
        }

        .section-head p {
            margin: 0;
            color: var(--muted);
            font-size: 17px;
            line-height: 1.8;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .06em;
        }

        .eyebrow::before {
            content: "";
            width: 24px;
            height: 3px;
            border-radius: 999px;
            background: var(--primary);
        }

        .hero {
            position: relative;
            min-height: 720px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 72px 0 62px;
            background:
                radial-gradient(circle at 20% 12%, rgba(96,165,250,.18), transparent 30%),
                radial-gradient(circle at 90% 72%, rgba(124,58,237,.08), transparent 28%),
                linear-gradient(rgba(37,99,235,.035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(37,99,235,.035) 1px, transparent 1px),
                #F9FBFF;
            background-size: auto, auto, 34px 34px, 34px 34px, auto;
            border-bottom: 1px solid var(--border);
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -130px;
            top: 70px;
            width: 430px;
            height: 430px;
            border: 1px solid rgba(37,99,235,.13);
            border-radius: 44px;
            transform: rotate(12deg);
            pointer-events: none;
        }

        .campaign-bar {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            max-width: 960px;
            margin: 0 auto 34px;
            padding: 13px 16px 13px 20px;
            color: var(--primary-dark);
            background: rgba(255,255,255,.88);
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(12px);
        }

        .campaign-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 800;
        }

        .status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 5px rgba(22,132,91,.12);
        }

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

        .countdown-label {
            color: var(--muted);
            font-size: 12px;
        }

        .time-unit {
            min-width: 44px;
            padding: 4px 7px;
            border-radius: 9px;
            color: #fff;
            background: var(--primary-dark);
            text-align: center;
            font-size: 13px;
            font-weight: 900;
            font-variant-numeric: tabular-nums;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 1050px;
            margin-inline: auto;
            text-align: center;
        }

        .hero h1 {
            max-width: 960px;
            margin: 18px auto 22px;
            color: var(--primary-dark);
            font-size: clamp(36px, 5.1vw, 62px);
            line-height: 1.13;
            font-weight: 950;
            letter-spacing: -.045em;
        }

        .hero-lead {
            max-width: 800px;
            margin: 0 auto;
            color: #53657C;
            font-size: clamp(17px, 1.7vw, 20px);
            line-height: 1.85;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 13px;
            margin-top: 30px;
        }

        .btn {
            min-height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 11px 24px;
            border: 1px solid transparent;
            border-radius: 12px;
            font-weight: 800;
            line-height: 1.25;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn:active {
            transform: translateY(0) scale(.985);
        }

        .btn-primary {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 12px 24px rgba(37,99,235,.22);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 15px 30px rgba(37,99,235,.28);
        }

        .btn-secondary {
            color: var(--primary-dark);
            background: #fff;
            border-color: #C7D9F2;
        }

        .btn-secondary:hover {
            color: var(--primary);
            background: var(--surface-soft);
            border-color: #9FC0ED;
        }

        .btn-quiet {
            color: var(--muted);
            background: transparent;
            border-color: var(--border);
        }

        .btn-quiet:hover {
            color: var(--primary-dark);
            background: #fff;
        }

        .hero-note {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px 20px;
            margin-top: 21px;
            color: var(--muted);
            font-size: 13px;
        }

        .hero-note span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-note svg {
            width: 17px;
            height: 17px;
            color: var(--success);
        }

        .metric-deck {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1.25fr .85fr 1fr 1.4fr;
            gap: 14px;
            margin-top: 48px;
            text-align: left;
        }

        .metric-card {
            position: relative;
            min-height: 138px;
            padding: 21px;
            overflow: hidden;
            background: rgba(255,255,255,.95);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .metric-card::before {
            content: "";
            position: absolute;
            inset: 0 0 auto;
            height: 4px;
            background: var(--primary);
        }

        .metric-card:nth-child(3)::before {
            background: var(--accent);
        }

        .metric-card strong {
            display: block;
            margin: 12px 0 6px;
            color: var(--primary-dark);
            font-size: 25px;
            line-height: 1.2;
            font-weight: 900;
        }

        .metric-card small {
            color: var(--muted);
            font-size: 13px;
        }

        .metric-label {
            color: var(--primary);
            font-size: 12px;
            font-weight: 900;
        }

        .kpi-layout {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 42px;
            align-items: center;
        }

        .intro-panel {
            padding: 34px;
            color: #fff;
            background: var(--primary-dark);
            border-radius: var(--radius-lg);
            box-shadow: 0 24px 55px rgba(30,58,95,.16);
        }

        .intro-panel h2 {
            margin: 14px 0;
            font-size: clamp(28px, 3vw, 38px);
            line-height: 1.3;
            font-weight: 900;
        }

        .intro-panel p {
            margin: 0;
            color: #D8E5F4;
            font-size: 16px;
        }

        .intro-panel .eyebrow {
            color: #93C5FD;
        }

        .intro-panel .eyebrow::before {
            background: #60A5FA;
        }

        .rule-list {
            display: grid;
            gap: 14px;
            margin-top: 28px;
        }

        .rule-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding-top: 15px;
            border-top: 1px solid rgba(255,255,255,.12);
        }

        .rule-item b {
            color: #fff;
            font-size: 15px;
        }

        .rule-item span {
            display: block;
            color: #BFD0E5;
            font-size: 13px;
        }

        .rule-icon {
            width: 34px;
            height: 34px;
            flex: 0 0 auto;
            display: grid;
            place-items: center;
            border-radius: 10px;
            color: #BFDBFE;
            background: rgba(96,165,250,.14);
            font-weight: 900;
        }

        .kpi-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 16px;
        }

        .kpi-card {
            min-height: 180px;
            padding: 27px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .kpi-card:nth-child(2) {
            margin-top: 28px;
        }

        .kpi-card:nth-child(3) {
            margin-top: -28px;
        }

        .kpi-card .number {
            color: var(--primary);
            font-size: 38px;
            line-height: 1;
            font-weight: 950;
        }

        .kpi-card h3 {
            margin: 17px 0 7px;
            color: var(--primary-dark);
            font-size: 19px;
            font-weight: 900;
        }

        .kpi-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .news-zone {
            background: #EEF5FF;
            border-block: 1px solid var(--border);
        }

        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 24px;
        }

        .news-list {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .news-item {
            display: grid;
            grid-template-columns: 88px minmax(0, 1fr) auto;
            gap: 20px;
            align-items: center;
            min-height: 108px;
            padding: 20px 24px;
            border-bottom: 1px solid #E8EEF7;
            transition: background .2s ease;
        }

        .news-item:last-child {
            border-bottom: 0;
        }

        .news-item:hover {
            background: #F8FBFF;
        }

        .news-date {
            color: var(--muted);
            font-size: 13px;
            font-weight: 700;
        }

        .news-title {
            color: var(--primary-dark);
            font-size: 17px;
            font-weight: 900;
            transition: color .2s ease;
        }

        .news-item:hover .news-title {
            color: var(--primary);
        }

        .news-desc {
            margin-top: 3px;
            color: var(--muted);
            font-size: 13px;
        }

        .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 900;
        }

        .arrow-link span {
            transition: transform .2s ease;
        }

        .arrow-link:hover span {
            transform: translateX(4px);
        }

        .recommend-panel {
            position: relative;
            padding: 28px;
            overflow: hidden;
            color: #fff;
            background: var(--primary);
            border-radius: var(--radius-lg);
            box-shadow: 0 22px 46px rgba(37,99,235,.2);
        }

        .recommend-panel::after {
            content: "";
            position: absolute;
            width: 180px;
            height: 180px;
            right: -62px;
            bottom: -70px;
            border: 24px solid rgba(255,255,255,.09);
            border-radius: 50%;
        }

        .recommend-panel h3 {
            position: relative;
            z-index: 1;
            margin: 20px 0 10px;
            font-size: 25px;
            line-height: 1.35;
            font-weight: 900;
        }

        .recommend-panel p {
            position: relative;
            z-index: 1;
            color: #DBEAFE;
            font-size: 14px;
        }

        .recommend-panel .btn {
            position: relative;
            z-index: 1;
            margin-top: 24px;
            color: var(--primary);
            background: #fff;
        }

        .matrix {
            display: grid;
            grid-template-columns: 1.08fr .92fr 230px;
            grid-template-rows: auto auto;
            gap: 18px;
        }

        .matrix-card {
            position: relative;
            padding: 28px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .matrix-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .matrix-main {
            grid-row: span 2;
            min-height: 400px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            background:
                radial-gradient(circle at 92% 15%, rgba(96,165,250,.19), transparent 28%),
                #fff;
        }

        .matrix-main::before {
            content: "";
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: -8px;
            height: 18px;
            z-index: -1;
            border: 1px solid #CFDDF0;
            border-radius: 0 0 18px 18px;
            background: #F4F8FF;
            transform: rotate(-.7deg);
        }

        .matrix-side {
            min-height: 190px;
        }

        .matrix-status {
            grid-row: span 2;
            display: flex;
            flex-direction: column;
            gap: 0;
            padding: 22px;
        }

        .card-number {
            position: absolute;
            top: 20px;
            right: 20px;
            color: #B5C6DD;
            font-size: 13px;
            font-weight: 950;
        }

        .icon-box {
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            color: var(--primary);
            background: var(--surface-soft);
            border-radius: 14px;
        }

        .icon-box svg {
            width: 25px;
            height: 25px;
        }

        .matrix-card h3 {
            margin: 22px 0 10px;
            color: var(--primary-dark);
            font-size: 23px;
            line-height: 1.35;
            font-weight: 900;
        }

        .matrix-card p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
        }

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 22px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            min-height: 28px;
            padding: 4px 10px;
            border-radius: 999px;
            color: #315E99;
            background: #EEF5FF;
            border: 1px solid #D5E5FA;
            font-size: 12px;
            font-weight: 800;
        }

        .tag-purple {
            color: #6738B5;
            background: #F3EEFF;
            border-color: #E2D7FB;
        }

        .status-line {
            padding: 16px 0;
            border-bottom: 1px solid #E9EFF7;
        }

        .status-line:last-child {
            border-bottom: 0;
        }

        .status-line b {
            display: block;
            color: var(--primary-dark);
            font-size: 14px;
        }

        .status-line span {
            color: var(--muted);
            font-size: 12px;
        }

        .status-meter {
            height: 6px;
            margin-top: 9px;
            overflow: hidden;
            background: #E9F0FA;
            border-radius: 999px;
        }

        .status-meter i {
            display: block;
            height: 100%;
            border-radius: inherit;
            background: var(--primary);
        }

        .stage-wrap {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 48px;
            align-items: center;
        }

        .filter-demo {
            position: relative;
            padding: 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 28px;
            box-shadow: 0 28px 65px rgba(30,58,95,.12);
        }

        .filter-demo::before {
            content: "";
            position: absolute;
            inset: -12px 34px auto;
            height: 12px;
            border: 1px solid var(--border);
            border-bottom: 0;
            border-radius: 16px 16px 0 0;
            background: #EDF4FF;
        }

        .demo-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 15px;
            padding-bottom: 18px;
            border-bottom: 1px solid #E8EEF6;
        }

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

        .demo-dots i {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #C9D6E7;
        }

        .demo-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            padding: 20px 0;
        }

        .filter-chip {
            min-height: 36px;
            padding: 7px 13px;
            border: 1px solid var(--border);
            border-radius: 999px;
            color: var(--muted);
            background: #fff;
            font-size: 12px;
            font-weight: 800;
        }

        .filter-chip.active {
            color: #fff;
            border-color: var(--primary);
            background: var(--primary);
        }

        .demo-results {
            display: grid;
            gap: 11px;
        }

        .demo-result {
            display: grid;
            grid-template-columns: 44px 1fr auto;
            align-items: center;
            gap: 12px;
            padding: 13px;
            background: #F7FAFF;
            border: 1px solid #E4ECF7;
            border-radius: 13px;
        }

        .demo-thumb {
            width: 44px;
            height: 44px;
            display: grid;
            place-items: center;
            border-radius: 11px;
            color: var(--primary);
            background: #E1EDFF;
            font-size: 12px;
            font-weight: 900;
        }

        .demo-result b {
            display: block;
            color: var(--primary-dark);
            font-size: 13px;
        }

        .demo-result span {
            color: var(--muted);
            font-size: 11px;
        }

        .feature-list {
            display: grid;
            gap: 16px;
            margin: 28px 0;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 13px;
        }

        .check {
            width: 27px;
            height: 27px;
            flex: 0 0 auto;
            display: grid;
            place-items: center;
            margin-top: 2px;
            border-radius: 9px;
            color: var(--success);
            background: #E7F7F0;
            font-weight: 900;
        }

        .feature-item b {
            display: block;
            color: var(--primary-dark);
            font-size: 15px;
        }

        .feature-item span {
            color: var(--muted);
            font-size: 14px;
        }

        .comparison {
            background: #fff;
            border-block: 1px solid var(--border);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 82px 1fr;
            align-items: stretch;
        }

        .compare-card {
            padding: 32px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: #FAFCFF;
        }

        .compare-card.highlight {
            background: #F2F7FF;
            border-color: #BFD4F3;
            box-shadow: var(--shadow);
        }

        .compare-card h3 {
            margin: 0 0 22px;
            color: var(--primary-dark);
            font-size: 23px;
            font-weight: 900;
        }

        .compare-list {
            display: grid;
            gap: 18px;
        }

        .compare-row {
            display: grid;
            grid-template-columns: 30px 1fr;
            gap: 12px;
            align-items: start;
        }

        .compare-row i {
            width: 26px;
            height: 26px;
            display: grid;
            place-items: center;
            border-radius: 8px;
            color: #7A899C;
            background: #E9EEF5;
            font-style: normal;
            font-size: 13px;
            font-weight: 900;
        }

        .highlight .compare-row i {
            color: var(--success);
            background: #DFF4EA;
        }

        .compare-row b {
            display: block;
            color: var(--primary-dark);
            font-size: 15px;
        }

        .compare-row span {
            color: var(--muted);
            font-size: 13px;
        }

        .compare-divider {
            display: grid;
            place-items: center;
        }

        .compare-divider span {
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            color: #fff;
            background: var(--accent);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 950;
            box-shadow: 0 12px 25px rgba(124,58,237,.2);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 330px minmax(0,1fr);
            gap: 54px;
            align-items: start;
        }

        .faq-aside {
            position: sticky;
            top: 28px;
        }

        .faq-aside h2 {
            margin: 14px 0;
            color: var(--primary-dark);
            font-size: 34px;
            line-height: 1.3;
            font-weight: 900;
        }

        .faq-aside p {
            color: var(--muted);
        }

        .faq-list {
            display: grid;
            gap: 12px;
        }

        .faq-item {
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: 0 8px 24px rgba(30,58,95,.045);
        }

        .faq-question {
            width: 100%;
            min-height: 66px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 18px 20px;
            color: var(--primary-dark);
            background: #fff;
            text-align: left;
            font-weight: 900;
        }

        .faq-question:hover {
            color: var(--primary);
            background: #FBFDFF;
        }

        .faq-icon {
            position: relative;
            width: 28px;
            height: 28px;
            flex: 0 0 auto;
            border-radius: 9px;
            background: var(--surface-soft);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            left: 8px;
            right: 8px;
            top: 13px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: transform .22s ease;
        }

        .faq-icon::after {
            transform: rotate(90deg);
        }

        .faq-question[aria-expanded="true"] .faq-icon::after {
            transform: rotate(0);
        }

        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .22s ease;
        }

        .faq-answer > div {
            overflow: hidden;
        }

        .faq-answer p {
            margin: 0;
            padding: 0 20px 20px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            grid-template-rows: 1fr;
        }

        .form-section {
            padding-top: 0;
        }

        .form-shell {
            display: grid;
            grid-template-columns: .78fr 1.22fr;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 28px;
            box-shadow: 0 26px 64px rgba(30,58,95,.11);
        }

        .form-intro {
            padding: 46px;
            color: #fff;
            background:
                radial-gradient(circle at 95% 12%, rgba(96,165,250,.25), transparent 30%),
                var(--primary-dark);
        }

        .form-intro h2 {
            margin: 16px 0;
            font-size: clamp(29px, 3vw, 39px);
            line-height: 1.3;
            font-weight: 900;
        }

        .form-intro p {
            color: #CAD8E9;
        }

        .privacy-points {
            display: grid;
            gap: 12px;
            margin-top: 28px;
        }

        .privacy-points span {
            display: flex;
            gap: 10px;
            color: #E5EEF8;
            font-size: 14px;
        }

        .form-card {
            padding: 44px;
        }

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

        .field-full {
            grid-column: 1 / -1;
        }

        .field label {
            display: block;
            margin-bottom: 8px;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 800;
        }

        .required {
            color: var(--danger);
        }

        .field input,
        .field select,
        .field textarea {
            width: 100%;
            min-height: 48px;
            padding: 11px 14px;
            color: var(--text);
            background: #FBFDFF;
            border: 1px solid #CAD8E9;
            border-radius: 11px;
            outline: none;
            transition: border .2s ease, box-shadow .2s ease, background .2s ease;
        }

        .field textarea {
            min-height: 126px;
            resize: vertical;
        }

        .field input:focus,
        .field select:focus,
        .field textarea:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37,99,235,.11);
        }

        .field.invalid input,
        .field.invalid select,
        .field.invalid textarea {
            border-color: var(--danger);
        }

        .error-text {
            display: none;
            margin-top: 6px;
            color: var(--danger);
            font-size: 12px;
        }

        .field.invalid .error-text {
            display: block;
        }

        .checkbox-row {
            display: flex;
            align-items: flex-start;
            gap: 11px;
        }

        .checkbox-row input {
            width: 18px;
            height: 18px;
            flex: 0 0 auto;
            margin-top: 4px;
            accent-color: var(--primary);
        }

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

        .form-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 22px;
        }

        .form-hint {
            color: var(--muted);
            font-size: 12px;
        }

        .form-message {
            display: none;
            margin-top: 16px;
            padding: 12px 14px;
            border-radius: 11px;
            color: #116747;
            background: #E8F7F0;
            border: 1px solid #BFE7D5;
            font-size: 14px;
            font-weight: 700;
        }

        .form-message.show {
            display: block;
        }

        .site-footer {
            padding: 42px 0;
            background: #F1F6FC;
            border-top: 1px solid var(--border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr .8fr .8fr;
            gap: 38px;
            align-items: start;
        }

        .footer-brand {
            color: var(--primary-dark);
            font-size: 18px;
            font-weight: 950;
        }

        .footer-copy {
            max-width: 500px;
            margin-top: 9px;
            color: var(--muted);
            font-size: 13px;
        }

        .footer-title {
            margin-bottom: 11px;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 900;
        }

        .footer-links {
            display: grid;
            gap: 8px;
        }

        .footer-links a,
        .footer-links button {
            width: fit-content;
            padding: 0;
            color: var(--muted);
            background: transparent;
            font-size: 13px;
            text-align: left;
            transition: color .2s ease;
        }

        .footer-links a:hover,
        .footer-links button:hover {
            color: var(--primary);
        }

        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            color: #7A899D;
            border-top: 1px solid var(--border);
            font-size: 12px;
        }

        .mobile-menu-panel {
            display: none;
        }

        .age-modal {
            position: fixed;
            inset: 0;
            z-index: 100;
            display: none;
            place-items: center;
            padding: 20px;
            background: rgba(18,32,52,.58);
            backdrop-filter: blur(8px);
        }

        .age-modal.show {
            display: grid;
        }

        .age-dialog {
            width: min(100%, 560px);
            overflow: hidden;
            background: #fff;
            border: 1px solid rgba(255,255,255,.7);
            border-radius: 26px;
            box-shadow: 0 32px 90px rgba(15,35,60,.28);
        }

        .age-dialog-head {
            padding: 30px 34px 24px;
            background: #F1F6FF;
            border-bottom: 1px solid var(--border);
        }

        .age-dialog-head h2 {
            margin: 13px 0 8px;
            color: var(--primary-dark);
            font-size: 28px;
            line-height: 1.3;
            font-weight: 950;
        }

        .age-dialog-head p,
        .age-dialog-body p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .age-dialog-body {
            padding: 26px 34px 32px;
        }

        .age-points {
            display: grid;
            gap: 10px;
            margin: 0 0 24px;
            padding: 0;
            list-style: none;
        }

        .age-points li {
            display: flex;
            gap: 10px;
            color: var(--text);
            font-size: 14px;
        }

        .age-dialog-actions {
            display: flex;
            gap: 12px;
        }

        .age-dialog-actions .btn {
            flex: 1;
        }

        @media (max-width: 1023px) {
            :root {
                --sidebar: 88px;
            }

            .sidebar {
                width: var(--sidebar);
                padding: 22px 13px;
                align-items: center;
            }

            .brand {
                justify-content: center;
            }

            .brand-copy,
            .nav-text,
            .sidebar-bottom p {
                display: none;
            }

            .side-nav {
                width: 100%;
            }

            .nav-link {
                justify-content: center;
                padding-inline: 10px;
            }

            .sidebar-bottom {
                width: 58px;
                padding: 12px 6px;
                text-align: center;
            }

            .age-badge {
                justify-content: center;
                padding: 5px 7px;
            }

            .metric-deck {
                grid-template-columns: 1fr 1fr;
            }

            .news-layout,
            .kpi-layout,
            .stage-wrap,
            .faq-layout {
                grid-template-columns: 1fr;
            }

            .faq-aside {
                position: static;
                max-width: 700px;
            }

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

            .matrix-main {
                grid-row: span 1;
                grid-column: span 2;
                min-height: 300px;
            }

            .matrix-status {
                grid-row: span 1;
            }

            .form-shell {
                grid-template-columns: 1fr;
            }

            .form-intro {
                padding: 40px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 68px;
            }

            html {
                scroll-padding-top: 78px;
            }

            .sidebar {
                display: none;
            }

            .main-area {
                margin-left: 0;
            }

            .mobile-header {
                position: sticky;
                top: 0;
                z-index: 60;
                min-height: 68px;
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 12px;
                padding: 10px 18px;
                background: rgba(255,255,255,.96);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(30,58,95,.06);
                backdrop-filter: blur(12px);
            }

            .mobile-brand {
                min-width: 0;
                display: flex;
                align-items: center;
                gap: 10px;
            }

            .mobile-brand .brand-mark {
                width: 39px;
                height: 39px;
            }

            .mobile-title {
                min-width: 0;
                color: var(--primary-dark);
                font-size: 13px;
                line-height: 1.25;
                font-weight: 900;
            }

            .mobile-title small {
                display: block;
                color: var(--muted);
                font-size: 10px;
                font-weight: 600;
            }

            .menu-toggle {
                width: 46px;
                height: 46px;
                display: grid;
                place-items: center;
                color: var(--primary-dark);
                background: var(--surface-soft);
                border-radius: 12px;
            }

            .menu-toggle svg {
                width: 24px;
                height: 24px;
            }

            .mobile-menu-panel {
                position: fixed;
                z-index: 59;
                top: 68px;
                left: 0;
                right: 0;
                display: grid;
                gap: 8px;
                padding: 14px 18px 20px;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 18px 30px rgba(30,58,95,.1);
                transform: translateY(-130%);
                visibility: hidden;
                opacity: 0;
                transition: transform .22s ease, opacity .22s ease, visibility .22s ease;
            }

            .mobile-menu-panel.open {
                transform: translateY(0);
                visibility: visible;
                opacity: 1;
            }

            .mobile-menu-panel .nav-link {
                justify-content: flex-start;
            }

            .content-container {
                width: min(100% - 32px, 1280px);
            }

            .hero {
                min-height: auto;
                padding: 42px 0 50px;
            }

            .hero::after {
                display: none;
            }

            .campaign-bar {
                align-items: flex-start;
                flex-direction: column;
                margin-bottom: 28px;
            }

            .countdown {
                width: 100%;
                justify-content: space-between;
            }

            .countdown-label {
                flex: 1;
            }

            .hero h1 {
                font-size: clamp(33px, 10vw, 42px);
            }

            .hero-lead {
                font-size: 16px;
            }

            .hero-actions {
                display: grid;
                grid-template-columns: 1fr;
            }

            .metric-deck {
                grid-template-columns: 1fr;
                margin-top: 36px;
            }

            .metric-card {
                min-height: 116px;
            }

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

            .kpi-card:nth-child(2),
            .kpi-card:nth-child(3) {
                margin-top: 0;
            }

            .intro-panel {
                padding: 28px;
            }

            .news-layout {
                gap: 18px;
            }

            .news-item {
                grid-template-columns: 1fr auto;
                gap: 8px 15px;
            }

            .news-date {
                grid-column: 1 / -1;
            }

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

            .matrix-main {
                grid-column: auto;
                min-height: 360px;
            }

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

            .compare-divider {
                height: 54px;
            }

            .compare-divider span {
                width: 46px;
                height: 46px;
            }

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

            .field-full {
                grid-column: auto;
            }

            .form-intro,
            .form-card {
                padding: 30px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .age-dialog-head,
            .age-dialog-body {
                padding-left: 24px;
                padding-right: 24px;
            }

            .age-dialog-actions {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero-actions .btn,
            .form-actions .btn {
                width: 100%;
            }

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

            .demo-result {
                grid-template-columns: 40px 1fr;
            }

            .demo-result > span {
                grid-column: 2;
            }

            .compare-card,
            .matrix-card {
                padding: 23px;
            }

            .countdown {
                flex-wrap: wrap;
                justify-content: flex-start;
            }

            .countdown-label {
                flex-basis: 100%;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *, *::before, *::after {
                transition-duration: .01ms !important;
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
            }

            .btn:hover,
            .metric-card:hover,
            .matrix-card:hover,
            .nav-link:hover {
                transform: none;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --primary-dark: #1E3A5F;
            --secondary: #60A5FA;
            --accent: #7C3AED;
            --canvas: #F6F9FE;
            --surface: #FFFFFF;
            --surface-soft: #EAF2FF;
            --text: #334155;
            --muted: #64748B;
            --border: #DCE6F3;
            --success: #16845B;
            --warning: #B7791F;
            --danger: #C2414B;
            --radius-sm: 12px;
            --radius: 18px;
            --radius-lg: 26px;
            --shadow: 0 14px 36px rgba(30, 58, 95, .08);
            --shadow-hover: 0 20px 46px rgba(37, 99, 235, .14);
            --sidebar: 248px;
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 86px;
        }

        body {
            margin: 0;
            overflow-x: hidden;
            color: var(--text);
            background: var(--canvas);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body.modal-open {
            overflow: hidden;
        }

        button, input, select, textarea {
            font: inherit;
        }

        button, a {
            -webkit-tap-highlight-color: transparent;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button {
            border: 0;
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(37, 99, 235, .28);
            outline-offset: 3px;
        }

        .desktop-sidebar {
            position: fixed;
            inset: 0 auto 0 0;
            z-index: 50;
            width: var(--sidebar);
            display: flex;
            flex-direction: column;
            padding: 25px 20px 20px;
            background: rgba(255, 255, 255, .97);
            border-right: 1px solid var(--border);
            box-shadow: 8px 0 28px rgba(30, 58, 95, .035);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            min-height: 54px;
            color: var(--primary-dark);
        }

        .brand-mark {
            flex: 0 0 auto;
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            border-radius: 13px;
            color: #fff;
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .04em;
            background: var(--primary);
            box-shadow: 0 9px 22px rgba(37, 99, 235, .23);
        }

        .brand-copy {
            min-width: 0;
            font-weight: 900;
            font-size: 15px;
            line-height: 1.35;
        }

        .brand-copy small {
            display: block;
            margin-top: 3px;
            color: var(--muted);
            font-size: 11px;
            font-weight: 600;
        }

        .side-nav {
            display: grid;
            gap: 8px;
            margin-top: 38px;
        }

        .nav-link {
            position: relative;
            min-height: 50px;
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 11px 13px;
            border-radius: 13px;
            color: #526277;
            font-size: 14px;
            font-weight: 700;
            transition: color .2s ease, background .2s ease, transform .2s ease;
        }

        .nav-link svg {
            width: 21px;
            height: 21px;
            flex: 0 0 auto;
        }

        .nav-link:hover {
            color: var(--primary);
            background: #F1F6FF;
            transform: translateX(2px);
        }

        .nav-link.active {
            color: #174EA6;
            background: var(--surface-soft);
        }

        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            bottom: 12px;
            width: 3px;
            border-radius: 999px;
            background: var(--primary);
        }

        .sidebar-bottom {
            margin-top: auto;
            padding: 18px 5px 0;
            border-top: 1px solid var(--border);
        }

        .age-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 5px 10px;
            border: 1px solid #F4D8A5;
            border-radius: 999px;
            color: #8A5A12;
            background: #FFF8E8;
            font-size: 12px;
            font-weight: 800;
        }

        .sidebar-note {
            margin: 12px 0 14px;
            color: var(--muted);
            font-size: 12px;
            line-height: 1.65;
        }

        .sidebar-action {
            padding: 0;
            color: var(--primary);
            background: transparent;
            font-size: 12px;
            font-weight: 800;
        }

        .sidebar-action:hover {
            color: var(--primary-hover);
        }

        .main-area {
            min-height: 100vh;
            margin-left: var(--sidebar);
        }

        .mobile-header {
            display: none;
        }

        .content-container {
            width: min(100% - 48px, 1280px);
            margin-inline: auto;
        }

        .section {
            padding-block: var(--section-space);
        }

        .section-tight {
            padding-block: 72px;
        }

        .section-head {
            max-width: 760px;
            margin-bottom: 34px;
        }

        .section-head h2 {
            margin: 12px 0 13px;
            color: var(--primary-dark);
            font-size: clamp(28px, 3vw, 36px);
            line-height: 1.25;
            font-weight: 900;
            letter-spacing: -.025em;
        }

        .section-head p {
            margin: 0;
            color: var(--muted);
            font-size: 17px;
            line-height: 1.8;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .06em;
        }

        .eyebrow::before {
            content: "";
            width: 24px;
            height: 3px;
            border-radius: 999px;
            background: var(--primary);
        }

        .category-hero {
            position: relative;
            overflow: hidden;
            padding: 64px 0 42px;
            background:
                radial-gradient(circle at 13% 18%, rgba(96, 165, 250, .18), transparent 28%),
                linear-gradient(rgba(37, 99, 235, .035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(37, 99, 235, .035) 1px, transparent 1px),
                #FAFCFF;
            background-size: auto, 34px 34px, 34px 34px, auto;
            border-bottom: 1px solid var(--border);
        }

        .category-hero::after {
            content: "";
            position: absolute;
            top: -90px;
            right: -80px;
            width: 310px;
            height: 310px;
            border: 52px solid rgba(124, 58, 237, .04);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.35fr) minmax(310px, .65fr);
            gap: 48px;
            align-items: center;
        }

        .hero-title {
            max-width: 820px;
            margin: 14px 0 18px;
            color: var(--primary-dark);
            font-size: clamp(34px, 4.3vw, 48px);
            line-height: 1.18;
            font-weight: 950;
            letter-spacing: -.04em;
        }

        .hero-summary {
            max-width: 780px;
            margin: 0;
            color: #526277;
            font-size: 17px;
            line-height: 1.85;
        }

        .hero-notices {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .notice-chip, .badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            min-height: 30px;
            padding: 5px 11px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 800;
        }

        .notice-chip {
            color: #41556F;
            background: rgba(255, 255, 255, .86);
            border: 1px solid var(--border);
        }

        .notice-chip svg {
            width: 15px;
            height: 15px;
            color: var(--primary);
        }

        .update-panel {
            position: relative;
            padding: 25px;
            border: 1px solid rgba(37, 99, 235, .16);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .94);
            box-shadow: var(--shadow);
        }

        .update-panel::before {
            content: "";
            position: absolute;
            inset: 10px -9px -9px 10px;
            z-index: -1;
            border: 1px solid rgba(96, 165, 250, .18);
            border-radius: var(--radius-lg);
            background: rgba(234, 242, 255, .7);
        }

        .panel-label {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 900;
        }

        .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--success);
            font-size: 12px;
            font-weight: 800;
        }

        .live-dot::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 5px rgba(22, 132, 91, .1);
        }

        .countdown {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 9px;
            margin: 21px 0;
        }

        .time-cell {
            padding: 13px 8px;
            text-align: center;
            border: 1px solid var(--border);
            border-radius: 14px;
            background: #F8FBFF;
        }

        .time-number {
            display: block;
            color: var(--primary-dark);
            font-size: 25px;
            line-height: 1.1;
            font-weight: 950;
            font-variant-numeric: tabular-nums;
        }

        .time-label {
            display: block;
            margin-top: 5px;
            color: var(--muted);
            font-size: 11px;
        }

        .panel-copy {
            margin: 0 0 17px;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.65;
        }

        .button-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn {
            min-height: 46px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 11px 23px;
            border: 1px solid transparent;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 850;
            transition: transform .2s ease, box-shadow .2s ease, color .2s ease, background .2s ease, border-color .2s ease;
        }

        .btn:hover {
            transform: translateY(-1px);
        }

        .btn:active {
            transform: scale(.985);
        }

        .btn-primary {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 9px 20px rgba(37, 99, 235, .2);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 12px 26px rgba(37, 99, 235, .26);
        }

        .btn-secondary {
            color: var(--primary-dark);
            background: #fff;
            border-color: #BFD4F3;
        }

        .btn-secondary:hover {
            color: var(--primary);
            background: var(--surface-soft);
        }

        .filter-wrap {
            position: sticky;
            top: 0;
            z-index: 35;
            padding: 15px 0;
            border-bottom: 1px solid var(--border);
            background: rgba(246, 249, 254, .93);
            backdrop-filter: blur(14px);
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 11px;
            overflow-x: auto;
            padding: 2px 1px 7px;
            scrollbar-width: thin;
        }

        .filter-label {
            flex: 0 0 auto;
            margin-right: 3px;
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 900;
        }

        .filter-button {
            flex: 0 0 auto;
            min-height: 38px;
            padding: 7px 15px;
            color: #5B6C81;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 750;
            transition: .2s ease;
        }

        .filter-button:hover,
        .filter-button.active {
            color: #174EA6;
            background: var(--surface-soft);
            border-color: #BFD4F3;
        }

        .browse-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(230px, 280px);
            gap: 30px;
            align-items: start;
        }

        .feature-card {
            position: relative;
            display: grid;
            grid-template-columns: minmax(260px, 42%) 1fr;
            overflow: hidden;
            margin-bottom: 26px;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            background: var(--surface);
            box-shadow: var(--shadow);
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .cover {
            position: relative;
            min-height: 260px;
            overflow: hidden;
            background:
                radial-gradient(circle at 26% 24%, rgba(255, 255, 255, .75), transparent 18%),
                linear-gradient(145deg, #CFE2FF 0%, #84B8F8 48%, #365F99 100%);
        }

        .cover::before {
            content: "";
            position: absolute;
            width: 170px;
            height: 230px;
            left: 50%;
            bottom: -64px;
            transform: translateX(-50%);
            border-radius: 48% 48% 22% 22%;
            background: rgba(30, 58, 95, .34);
            filter: blur(.2px);
        }

        .cover::after {
            content: "";
            position: absolute;
            width: 88px;
            height: 88px;
            left: 50%;
            top: 48px;
            transform: translateX(-50%);
            border-radius: 50%;
            background: rgba(30, 58, 95, .38);
            box-shadow: 0 0 0 18px rgba(255, 255, 255, .08);
        }

        .cover-pattern {
            position: absolute;
            inset: 0;
            z-index: 2;
            background:
                linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px),
                linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px);
            background-size: 28px 28px;
        }

        .cover-label {
            position: absolute;
            z-index: 3;
            left: 18px;
            bottom: 17px;
            padding: 7px 11px;
            color: #fff;
            background: rgba(30, 58, 95, .76);
            border: 1px solid rgba(255,255,255,.3);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 850;
        }

        .feature-body {
            padding: 30px;
        }

        .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .badge-category {
            color: #174EA6;
            background: var(--surface-soft);
        }

        .badge-update {
            color: #0D6C49;
            background: #E8F7F1;
        }

        .badge-pick {
            color: #6D28D9;
            background: #F2EBFF;
        }

        .badge-age {
            color: #8A5A12;
            background: #FFF6DF;
        }

        .feature-body h2 {
            margin: 17px 0 10px;
            color: var(--primary-dark);
            font-size: clamp(25px, 2.6vw, 33px);
            line-height: 1.3;
            font-weight: 900;
        }

        .feature-body p {
            margin: 0;
            color: var(--muted);
            line-height: 1.82;
        }

        .meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 15px;
            margin-top: 20px;
            color: #718096;
            font-size: 13px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 22px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 850;
        }

        .text-link span {
            transition: transform .2s ease;
        }

        .text-link:hover span {
            transform: translateX(4px);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 22px;
        }

        .content-card {
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--surface);
            box-shadow: 0 10px 28px rgba(30, 58, 95, .06);
            transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
        }

        .content-card:nth-child(even) {
            transform: translateY(18px);
        }

        .content-card:hover {
            transform: translateY(-4px);
            border-color: #BCD2F2;
            box-shadow: var(--shadow-hover);
        }

        .content-card:nth-child(even):hover {
            transform: translateY(14px);
        }

        .small-cover {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background:
                radial-gradient(circle at 70% 25%, rgba(255,255,255,.65), transparent 20%),
                linear-gradient(135deg, #E2EEFF, #7FAEF0 58%, #294E7C);
        }

        .small-cover.variant-two {
            background:
                radial-gradient(circle at 26% 22%, rgba(255,255,255,.7), transparent 18%),
                linear-gradient(135deg, #EAE5FF, #9B8FE8 52%, #385A88);
        }

        .small-cover.variant-three {
            background:
                linear-gradient(45deg, rgba(255,255,255,.12) 25%, transparent 25%) 0 0/24px 24px,
                linear-gradient(135deg, #D9F0FF, #62A5DF 55%, #27496C);
        }

        .small-cover.variant-four {
            background:
                radial-gradient(circle at 76% 28%, rgba(255,255,255,.55), transparent 16%),
                linear-gradient(145deg, #EDF4FF, #8EA7D5 48%, #3A4E73);
        }

        .small-cover::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 23%;
            width: 65px;
            height: 65px;
            transform: translateX(-50%);
            border-radius: 50%;
            background: rgba(30,58,95,.27);
            box-shadow: 0 72px 0 38px rgba(30,58,95,.23);
        }

        .small-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(30,58,95,.34), transparent 52%);
        }

        .card-index {
            position: absolute;
            z-index: 2;
            top: 15px;
            left: 15px;
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: #fff;
            background: rgba(37, 99, 235, .86);
            border: 1px solid rgba(255,255,255,.4);
            border-radius: 11px;
            font-size: 12px;
            font-weight: 900;
        }

        .content-body {
            padding: 22px;
        }

        .content-body h3 {
            margin: 13px 0 8px;
            color: var(--primary-dark);
            font-size: 20px;
            line-height: 1.4;
            font-weight: 900;
        }

        .content-body p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .index-panel {
            position: sticky;
            top: 90px;
            padding: 23px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
        }

        .index-panel h2 {
            margin: 0 0 17px;
            color: var(--primary-dark);
            font-size: 18px;
            font-weight: 900;
        }

        .status-list {
            display: grid;
            gap: 12px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .status-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-bottom: 12px;
            border-bottom: 1px solid #EDF2F8;
            font-size: 13px;
        }

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

        .status-value {
            color: var(--primary);
            font-weight: 900;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 22px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .tag-cloud button {
            padding: 6px 10px;
            color: #5A6D83;
            background: #F6F9FE;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
        }

        .tag-cloud button:hover {
            color: var(--primary);
            background: var(--surface-soft);
        }

        .load-more {
            display: flex;
            justify-content: center;
            margin-top: 54px;
        }

        .guide-section {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            background: #FBFDFF;
        }

        .guide-grid {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 56px;
            align-items: start;
        }

        .guide-intro {
            position: sticky;
            top: 94px;
        }

        .guide-intro h2 {
            margin: 12px 0;
            color: var(--primary-dark);
            font-size: clamp(28px, 3vw, 36px);
            line-height: 1.28;
            font-weight: 900;
        }

        .guide-intro p {
            margin: 0;
            color: var(--muted);
        }

        .step-list {
            display: grid;
            gap: 16px;
        }

        .step-card {
            display: grid;
            grid-template-columns: 48px 1fr;
            gap: 17px;
            padding: 23px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: 0 9px 26px rgba(30,58,95,.05);
        }

        .step-number {
            width: 48px;
            height: 48px;
            display: grid;
            place-items: center;
            color: var(--primary);
            background: var(--surface-soft);
            border-radius: 14px;
            font-size: 14px;
            font-weight: 950;
        }

        .step-card h3 {
            margin: 0 0 5px;
            color: var(--primary-dark);
            font-size: 18px;
            font-weight: 900;
        }

        .step-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .faq-list {
            max-width: 920px;
            display: grid;
            gap: 13px;
        }

        .faq-item {
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: 16px;
            background: #fff;
            box-shadow: 0 8px 22px rgba(30,58,95,.045);
        }

        .faq-question {
            width: 100%;
            min-height: 62px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 17px 20px;
            color: var(--primary-dark);
            background: transparent;
            text-align: left;
            font-weight: 850;
        }

        .faq-question:hover {
            color: var(--primary);
            background: #FAFCFF;
        }

        .faq-icon {
            flex: 0 0 auto;
            width: 30px;
            height: 30px;
            display: grid;
            place-items: center;
            color: var(--primary);
            background: var(--surface-soft);
            border-radius: 9px;
            transition: transform .22s ease;
        }

        .faq-icon svg {
            width: 16px;
            height: 16px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .22s ease;
        }

        .faq-answer-inner {
            padding: 0 20px 19px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .cta-panel {
            position: relative;
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 35px;
            align-items: center;
            padding: 39px;
            border: 1px solid #C7D9F3;
            border-radius: var(--radius-lg);
            background:
                radial-gradient(circle at 88% 15%, rgba(124,58,237,.09), transparent 25%),
                #EAF2FF;
            box-shadow: var(--shadow);
        }

        .cta-panel h2 {
            margin: 0 0 10px;
            color: var(--primary-dark);
            font-size: clamp(27px, 3vw, 35px);
            line-height: 1.3;
            font-weight: 900;
        }

        .cta-panel p {
            max-width: 760px;
            margin: 0;
            color: #586B81;
        }

        .site-footer {
            padding: 58px 0 28px;
            border-top: 1px solid var(--border);
            background: #F9FBFF;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr .75fr .85fr;
            gap: 52px;
        }

        .footer-brand {
            color: var(--primary-dark);
            font-size: 18px;
            font-weight: 950;
        }

        .footer-copy {
            max-width: 620px;
            margin: 12px 0 0;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.8;
        }

        .footer-title {
            margin-bottom: 13px;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 900;
        }

        .footer-links {
            display: grid;
            gap: 9px;
        }

        .footer-links a,
        .footer-links button {
            width: fit-content;
            padding: 0;
            color: var(--muted);
            background: transparent;
            text-align: left;
            font-size: 13px;
            transition: color .2s ease;
        }

        .footer-links a:hover,
        .footer-links button:hover {
            color: var(--primary);
        }

        .copyright {
            margin-top: 36px;
            padding-top: 21px;
            border-top: 1px solid var(--border);
            color: #7A8899;
            font-size: 12px;
        }

        .age-modal {
            position: fixed;
            inset: 0;
            z-index: 100;
            display: none;
            place-items: center;
            padding: 20px;
            background: rgba(30, 58, 95, .52);
            backdrop-filter: blur(8px);
        }

        .age-modal.show {
            display: grid;
        }

        .age-dialog {
            width: min(100%, 520px);
            padding: 31px;
            border: 1px solid rgba(255,255,255,.7);
            border-radius: 24px;
            background: #fff;
            box-shadow: 0 28px 90px rgba(15, 37, 66, .28);
        }

        .age-symbol {
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            margin-bottom: 19px;
            color: #8A5A12;
            background: #FFF5D9;
            border-radius: 18px;
            font-size: 20px;
            font-weight: 950;
        }

        .age-dialog h2 {
            margin: 0 0 11px;
            color: var(--primary-dark);
            font-size: 27px;
            line-height: 1.3;
            font-weight: 950;
        }

        .age-dialog p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .age-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 24px;
        }

        .mobile-menu-button {
            width: 44px;
            height: 44px;
            display: grid;
            place-items: center;
            color: var(--primary-dark);
            background: #F1F6FF;
            border: 1px solid var(--border);
            border-radius: 12px;
        }

        .mobile-menu-button svg {
            width: 22px;
            height: 22px;
        }

        @media (max-width: 1023px) and (min-width: 768px) {
            :root {
                --sidebar: 88px;
                --section-space: 78px;
            }

            .desktop-sidebar {
                padding: 23px 13px;
            }

            .brand {
                justify-content: center;
            }

            .brand-copy,
            .nav-text,
            .sidebar-note,
            .sidebar-action {
                display: none;
            }

            .side-nav {
                margin-top: 30px;
            }

            .nav-link {
                justify-content: center;
                padding-inline: 10px;
            }

            .nav-link:hover {
                transform: none;
            }

            .sidebar-bottom {
                display: grid;
                place-items: center;
                padding-inline: 0;
            }

            .age-badge {
                width: 48px;
                justify-content: center;
                padding-inline: 4px;
            }

            .hero-grid {
                grid-template-columns: minmax(0, 1fr) 300px;
                gap: 30px;
            }

            .browse-layout {
                grid-template-columns: minmax(0, 1fr);
            }

            .index-panel {
                position: static;
                order: -1;
            }

            .status-list {
                grid-template-columns: repeat(4, 1fr);
            }

            .status-item {
                display: grid;
                gap: 3px;
                padding: 10px;
                border: 1px solid var(--border);
                border-radius: 12px;
                background: #F8FBFF;
            }
        }

        @media (max-width: 767px) {
            :root {
                --sidebar: 0px;
                --section-space: 68px;
            }

            .desktop-sidebar {
                top: 68px;
                right: 14px;
                bottom: auto;
                left: 14px;
                width: auto;
                display: none;
                max-height: calc(100vh - 84px);
                overflow-y: auto;
                padding: 19px;
                border: 1px solid var(--border);
                border-radius: 18px;
                box-shadow: 0 24px 58px rgba(30,58,95,.18);
            }

            .desktop-sidebar.open {
                display: flex;
            }

            .desktop-sidebar > .brand {
                display: none;
            }

            .desktop-sidebar .side-nav {
                margin-top: 0;
            }

            .desktop-sidebar .sidebar-bottom {
                margin-top: 20px;
            }

            .main-area {
                margin-left: 0;
                padding-top: 68px;
            }

            .mobile-header {
                position: fixed;
                inset: 0 0 auto;
                z-index: 60;
                height: 68px;
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 14px;
                padding: 0 18px;
                background: rgba(255,255,255,.96);
                border-bottom: 1px solid var(--border);
                backdrop-filter: blur(14px);
            }

            .mobile-brand {
                min-width: 0;
                display: flex;
                align-items: center;
                gap: 10px;
                color: var(--primary-dark);
                font-weight: 900;
            }

            .mobile-brand .brand-mark {
                width: 38px;
                height: 38px;
                border-radius: 11px;
            }

            .mobile-brand-text {
                min-width: 0;
                line-height: 1.25;
            }

            .mobile-brand-text strong {
                display: block;
                overflow: hidden;
                font-size: 13px;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .mobile-brand-text small {
                display: block;
                color: var(--muted);
                font-size: 10px;
            }

            .content-container {
                width: min(100% - 32px, 1280px);
            }

            .category-hero {
                padding: 50px 0 36px;
            }

            .hero-grid,
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-title {
                font-size: clamp(30px, 9vw, 38px);
            }

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

            .update-panel {
                padding: 21px;
            }

            .filter-wrap {
                top: 68px;
            }

            .browse-layout {
                grid-template-columns: 1fr;
            }

            .index-panel {
                position: static;
                order: -1;
                overflow: hidden;
            }

            .status-list {
                display: flex;
                overflow-x: auto;
                padding-bottom: 5px;
            }

            .status-item {
                min-width: 148px;
                display: grid;
                justify-content: start;
                gap: 4px;
                padding: 12px;
                border: 1px solid var(--border);
                border-radius: 12px;
                background: #F8FBFF;
            }

            .feature-card {
                grid-template-columns: 1fr;
            }

            .cover {
                min-height: 220px;
                aspect-ratio: 16 / 9;
            }

            .feature-body {
                padding: 24px;
            }

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

            .content-card:nth-child(even),
            .content-card:nth-child(even):hover {
                transform: none;
            }

            .guide-intro {
                position: static;
            }

            .cta-panel {
                grid-template-columns: 1fr;
                padding: 30px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 34px 25px;
            }

            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 58px;
            }

            .content-container {
                width: min(100% - 26px, 1280px);
            }

            .mobile-header {
                padding-inline: 13px;
            }

            .mobile-brand {
                max-width: calc(100% - 58px);
            }

            .hero-notices {
                gap: 7px;
            }

            .button-row,
            .age-actions {
                grid-template-columns: 1fr;
                display: grid;
            }

            .button-row .btn {
                width: 100%;
            }

            .countdown {
                gap: 6px;
            }

            .time-number {
                font-size: 22px;
            }

            .feature-body,
            .content-body {
                padding: 20px;
            }

            .step-card {
                grid-template-columns: 42px 1fr;
                padding: 19px;
            }

            .step-number {
                width: 42px;
                height: 42px;
            }

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

            .footer-grid > div:first-child {
                grid-column: auto;
            }

            .age-dialog {
                padding: 25px 21px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *, *::before, *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
            }

            .nav-link:hover,
            .btn:hover,
            .feature-card:hover,
            .content-card:hover,
            .content-card:nth-child(even),
            .content-card:nth-child(even):hover {
                transform: none;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-dark: #1E3A5F;
  --secondary: #60A5FA;
  --accent: #7C3AED;
  --canvas: #F6F9FE;
  --surface: #FFFFFF;
  --surface-soft: #EAF2FF;
  --text: #334155;
  --muted: #64748B;
  --border: #DCE6F3;
  --success: #16845B;
  --warning: #B7791F;
  --danger: #C2414B;
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 26px;
  --shadow: 0 14px 36px rgba(30, 58, 95, .08);
  --shadow-hover: 0 20px 46px rgba(37, 99, 235, .14);
  --sidebar: 248px;
  --section-space: 96px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: var(--canvas);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.modal-open {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  border: 0;
  cursor: pointer;
}

.desktop-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 40;
  width: var(--sidebar);
  display: flex;
  flex-direction: column;
  padding: 26px 20px 22px;
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, .96);
  box-shadow: 8px 0 34px rgba(30, 58, 95, .035);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  color: var(--primary-dark);
}

.brand-mark {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .04em;
  background: var(--primary);
  box-shadow: 0 9px 22px rgba(37, 99, 235, .23);
}

.brand-copy {
  min-width: 0;
  font-weight: 900;
  font-size: 15px;
  line-height: 1.35;
}

.brand-copy small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.side-nav {
  display: grid;
  gap: 8px;
  margin-top: 38px;
}

.nav-link {
  position: relative;
  min-height: 50px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 11px 13px;
  border-radius: 13px;
  color: #526277;
  font-size: 14px;
  font-weight: 700;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}

.nav-link svg {
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
}

.nav-link:hover {
  color: var(--primary);
  background: #F1F6FF;
  transform: translateX(2px);
}

.nav-link.active {
  color: #174EA6;
  background: var(--surface-soft);
}

.nav-link.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 999px;
  background: var(--primary);
}

.sidebar-bottom {
  margin-top: auto;
  padding: 17px 10px 0;
  border-top: 1px solid var(--border);
}

.age-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border: 1px solid #F4D8A5;
  border-radius: 999px;
  color: #8A5A12;
  background: #FFF8E8;
  font-size: 12px;
  font-weight: 800;
}

.sidebar-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.sidebar-action {
  margin-top: 11px;
  padding: 0;
  color: var(--primary);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
}

.sidebar-action:hover {
  color: var(--primary-hover);
}

.main-area {
  min-height: 100vh;
  margin-left: var(--sidebar);
}

.mobile-header {
  display: none;
}

.content-container {
  width: min(100% - 48px, 1280px);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-space);
}

.section-tight {
  padding-block: 72px;
}

.section-head {
  max-width: 740px;
  margin-bottom: 34px;
}

.section-head h2 {
  margin: 12px 0 13px;
  color: var(--primary-dark);
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: -.025em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .06em;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: 999px;
  background: var(--primary);
}

.category-hero {
  position: relative;
  overflow: hidden;
  padding: 74px 0 64px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 10% 12%, rgba(96, 165, 250, .18), transparent 30%),
    radial-gradient(circle at 92% 70%, rgba(124, 58, 237, .07), transparent 25%),
    linear-gradient(rgba(37, 99, 235, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, .035) 1px, transparent 1px),
    #F9FBFF;
  background-size: auto, auto, 34px 34px, 34px 34px, auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr);
  gap: 64px;
  align-items: center;
}

.hero-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 19px;
}

.hero-title {
  max-width: 830px;
  margin: 0;
  color: var(--primary-dark);
  font-size: clamp(36px, 4.4vw, 52px);
  line-height: 1.16;
  font-weight: 950;
  letter-spacing: -.04em;
}

.hero-summary {
  max-width: 780px;
  margin: 22px 0 0;
  color: #53657A;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 24px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 850;
  transition: transform .2s ease, box-shadow .2s ease, color .2s ease, background .2s ease, border-color .2s ease;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 10px 24px rgba(37, 99, 235, .2);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 14px 30px rgba(37, 99, 235, .26);
  transform: translateY(-1px);
}

.btn-secondary {
  color: var(--primary-dark);
  border-color: #C8D9F0;
  background: #fff;
}

.btn-secondary:hover {
  color: var(--primary);
  border-color: #AFC8EB;
  background: var(--surface-soft);
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(.985);
}

.btn:focus-visible,
.nav-link:focus-visible,
.filter-chip:focus-visible,
.faq-question:focus-visible,
.mobile-menu-button:focus-visible,
.footer-links a:focus-visible,
.footer-links button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, .24);
  outline-offset: 3px;
}

.data-summary {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow);
}

.data-summary::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 16px -12px -12px 16px;
  border: 1px solid #D5E3F6;
  border-radius: var(--radius-lg);
  background: rgba(234, 242, 255, .72);
  transform: rotate(.7deg);
}

.summary-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 4px 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.live-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--success);
}

.live-state::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 5px rgba(22, 132, 91, .1);
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 17px 18px;
  border: 1px solid #E4ECF7;
  border-radius: 15px;
  background: #fff;
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.metric-value {
  margin-top: 2px;
  color: var(--primary-dark);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 900;
}

.metric-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--primary);
  background: var(--surface-soft);
}

.metric-icon svg {
  width: 20px;
  height: 20px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1;
  font-weight: 850;
}

.badge-blue {
  color: #1855AC;
  border-color: #CDE0FA;
  background: #EDF5FF;
}

.badge-purple {
  color: #6631B8;
  border-color: #DED0F7;
  background: #F6F1FF;
}

.badge-green {
  color: #126B4B;
  border-color: #C9EBDD;
  background: #EDFAF5;
}

.badge-amber {
  color: #865512;
  border-color: #F3DAAC;
  background: #FFF8E9;
}

.filter-section {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.filter-layout {
  display: flex;
  align-items: center;
  gap: 22px;
}

.filter-title {
  flex: 0 0 auto;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 900;
}

.filter-list {
  display: flex;
  gap: 9px;
  overflow-x: auto;
  padding: 3px 2px 8px;
  scrollbar-width: thin;
}

.filter-chip {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 8px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: #526277;
  background: #fff;
  font-size: 13px;
  font-weight: 800;
  transition: .2s ease;
}

.filter-chip:hover,
.filter-chip.active {
  color: #174EA6;
  border-color: #B7D1F5;
  background: var(--surface-soft);
}

.filter-chip.active {
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, .08);
}

.timeline-wrap {
  position: relative;
  max-width: 1060px;
}

.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 107px;
  top: 26px;
  bottom: 44px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), #BFD4F2 75%, transparent);
}

.timeline-node {
  position: relative;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 52px;
  padding-bottom: 48px;
}

.timeline-date {
  padding-top: 21px;
  text-align: right;
  color: var(--primary-dark);
  font-size: 14px;
  line-height: 1.45;
  font-weight: 900;
}

.timeline-date small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.timeline-dot {
  position: absolute;
  left: 99px;
  top: 25px;
  width: 18px;
  height: 18px;
  border: 4px solid #fff;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 2px #AFCDF7, 0 5px 14px rgba(37, 99, 235, .2);
}

.timeline-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.timeline-node:nth-child(even) .timeline-cards {
  padding-left: 34px;
}

.content-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.content-card:hover {
  border-color: #C7DAF3;
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.card-cover {
  position: relative;
  min-height: 176px;
  overflow: hidden;
  background:
    radial-gradient(circle at 27% 28%, rgba(255,255,255,.9) 0 6%, transparent 7%),
    radial-gradient(circle at 66% 40%, rgba(255,255,255,.34) 0 17%, transparent 18%),
    linear-gradient(135deg, #CFE4FF, #7CB3F7 55%, #5A65C8);
}

.cover-violet {
  background:
    radial-gradient(circle at 72% 26%, rgba(255,255,255,.72) 0 9%, transparent 10%),
    linear-gradient(145deg, #E5DBFF, #A992E8 52%, #527BC7);
}

.cover-cyan {
  background:
    linear-gradient(35deg, transparent 42%, rgba(255,255,255,.3) 43% 48%, transparent 49%),
    radial-gradient(circle at 30% 35%, rgba(255,255,255,.68), transparent 24%),
    linear-gradient(135deg, #C9F0F0, #73BED9 54%, #4676C8);
}

.cover-slate {
  background:
    radial-gradient(ellipse at 50% 110%, rgba(255,255,255,.7) 0 28%, transparent 29%),
    linear-gradient(135deg, #DDE8F6, #91ACCD 52%, #536D9F);
}

.cover-lines {
  position: absolute;
  inset: 0;
  opacity: .55;
  background: repeating-linear-gradient(118deg, transparent 0 24px, rgba(255,255,255,.28) 25px 26px);
}

.cover-shape {
  position: absolute;
  right: 12%;
  bottom: -28px;
  width: 116px;
  height: 170px;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 58px 58px 20px 20px;
  background: rgba(30,58,95,.13);
  transform: rotate(8deg);
}

.cover-label {
  position: absolute;
  top: 15px;
  left: 15px;
}

.card-body {
  padding: 22px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 13px;
}

.card-title {
  margin: 0;
  color: var(--primary-dark);
  font-size: 20px;
  line-height: 1.45;
  font-weight: 900;
}

.card-copy {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 18px;
  padding-top: 15px;
  border-top: 1px solid #E9EFF7;
  color: var(--muted);
  font-size: 12px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary);
  font-weight: 850;
}

.card-link span {
  transition: transform .2s ease;
}

.card-link:hover span {
  transform: translateX(3px);
}

.editor-section {
  border-block: 1px solid var(--border);
  background: #EDF4FF;
}

.editor-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(300px, 34%);
  gap: 18px;
  overflow-x: auto;
  padding: 8px 5px 24px;
  scroll-snap-type: x mandatory;
  scrollbar-color: #A9C5EA transparent;
  scrollbar-width: thin;
}

.editor-card {
  min-height: 286px;
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
  padding: 26px;
  border: 1px solid #D4E2F5;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 30px rgba(30, 58, 95, .07);
  transition: transform .2s ease, box-shadow .2s ease;
}

.editor-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.editor-number {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 13px;
  color: #fff;
  background: var(--accent);
  font-size: 13px;
  font-weight: 900;
  box-shadow: 0 8px 20px rgba(124, 58, 237, .2);
}

.editor-card h3 {
  margin: 0;
  color: var(--primary-dark);
  font-size: 21px;
  line-height: 1.45;
  font-weight: 900;
}

.editor-card p {
  margin: 10px 0 20px;
  color: var(--muted);
  font-size: 14px;
}

.editor-card .card-link {
  margin-top: auto;
}

.standards-grid {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 34px;
  align-items: stretch;
}

.standard-intro {
  position: relative;
  overflow: hidden;
  padding: 36px;
  border-radius: var(--radius-lg);
  color: #fff;
  background: var(--primary-dark);
  box-shadow: var(--shadow);
}

.standard-intro::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border: 45px solid rgba(96, 165, 250, .16);
  border-radius: 50%;
}

.standard-intro .eyebrow {
  color: #A9CEFF;
}

.standard-intro .eyebrow::before {
  background: #60A5FA;
}

.standard-intro h2 {
  position: relative;
  z-index: 1;
  margin: 16px 0 14px;
  font-size: 32px;
  line-height: 1.3;
  font-weight: 900;
}

.standard-intro p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #D8E6F5;
}

.standard-list {
  display: grid;
  gap: 14px;
}

.standard-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 17px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 9px 24px rgba(30, 58, 95, .05);
}

.standard-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: var(--primary);
  background: var(--surface-soft);
}

.standard-icon svg {
  width: 23px;
  height: 23px;
}

.standard-item h3 {
  margin: 0;
  color: var(--primary-dark);
  font-size: 18px;
  font-weight: 900;
}

.standard-item p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.faq-list {
  display: grid;
  gap: 13px;
  max-width: 940px;
}

.faq-item {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 8px 22px rgba(30, 58, 95, .045);
}

.faq-question {
  width: 100%;
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 18px 22px;
  color: var(--primary-dark);
  background: transparent;
  text-align: left;
  font-size: 16px;
  font-weight: 850;
}

.faq-question:hover {
  background: #FAFCFF;
}

.faq-icon {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: var(--primary);
  background: var(--surface-soft);
  transition: transform .22s ease;
}

.faq-icon svg {
  width: 16px;
  height: 16px;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .22s ease;
}

.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer p {
  margin: 0;
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.feedback-cta {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 35px;
  align-items: center;
  padding: 42px;
  border: 1px solid #C9DCF6;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 20%, rgba(96,165,250,.18), transparent 30%),
    #fff;
  box-shadow: var(--shadow);
}

.feedback-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 42px;
  width: 90px;
  height: 4px;
  border-radius: 0 0 999px 999px;
  background: var(--accent);
}

.feedback-cta h2 {
  margin: 0;
  color: var(--primary-dark);
  font-size: clamp(27px, 3vw, 36px);
  line-height: 1.3;
  font-weight: 900;
}

.feedback-cta p {
  max-width: 720px;
  margin: 11px 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 62px 0 24px;
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr .7fr .8fr;
  gap: 52px;
}

.footer-brand {
  color: var(--primary-dark);
  font-size: 18px;
  font-weight: 950;
}

.footer-copy {
  max-width: 560px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.footer-title {
  margin-bottom: 13px;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 900;
}

.footer-links {
  display: grid;
  justify-items: start;
  gap: 9px;
}

.footer-links a,
.footer-links button {
  padding: 0;
  color: var(--muted);
  background: transparent;
  font-size: 13px;
  text-align: left;
  transition: color .2s ease, transform .2s ease;
}

.footer-links a:hover,
.footer-links button:hover {
  color: var(--primary);
  transform: translateX(2px);
}

.copyright {
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: #7A899C;
  font-size: 12px;
}

.mobile-menu-panel {
  display: none;
}

.age-modal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(15, 33, 57, .64);
  backdrop-filter: blur(7px);
}

.age-modal.open {
  display: grid;
}

.age-dialog {
  width: min(100%, 520px);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 30px 90px rgba(15, 33, 57, .3);
}

.age-dialog-top {
  padding: 28px 30px 22px;
  color: #fff;
  background: var(--primary-dark);
}

.age-dialog-top .age-badge {
  color: #FFE1A6;
  border-color: rgba(255,225,166,.35);
  background: rgba(255,248,232,.1);
}

.age-dialog h2 {
  margin: 17px 0 8px;
  font-size: 27px;
  line-height: 1.35;
  font-weight: 900;
}

.age-dialog-top p {
  margin: 0;
  color: #D8E6F5;
  font-size: 14px;
}

.age-dialog-body {
  padding: 25px 30px 30px;
}

.age-points {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.age-points li {
  display: flex;
  gap: 9px;
}

.age-points li::before {
  content: "✓";
  color: var(--success);
  font-weight: 900;
}

.age-dialog-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px;
}

.notice-toast {
  position: fixed;
  z-index: 120;
  right: 24px;
  bottom: 24px;
  max-width: 360px;
  display: none;
  align-items: flex-start;
  gap: 11px;
  padding: 15px 17px;
  border: 1px solid #CBE5D9;
  border-radius: 14px;
  color: #145C43;
  background: #F0FBF6;
  box-shadow: var(--shadow);
  font-size: 14px;
}

.notice-toast.show {
  display: flex;
}

@media (max-width: 1023px) {
  :root {
    --sidebar: 88px;
    --section-space: 78px;
  }

  .desktop-sidebar {
    width: 88px;
    align-items: center;
    padding-inline: 14px;
  }

  .brand-copy,
  .nav-text,
  .sidebar-note,
  .sidebar-action {
    display: none;
  }

  .side-nav {
    width: 100%;
  }

  .nav-link {
    justify-content: center;
    padding-inline: 10px;
  }

  .nav-link:hover {
    transform: none;
  }

  .sidebar-bottom {
    padding-inline: 0;
  }

  .age-badge {
    padding-inline: 8px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
    gap: 36px;
  }

  .timeline-cards {
    grid-template-columns: 1fr;
  }

  .timeline-node:nth-child(even) .timeline-cards {
    padding-left: 20px;
  }

  .editor-track {
    grid-auto-columns: minmax(290px, 46%);
  }

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

@media (max-width: 767px) {
  :root {
    --sidebar: 0px;
    --section-space: 64px;
  }

  html {
    scroll-padding-top: 74px;
  }

  .desktop-sidebar {
    display: none;
  }

  .main-area {
    margin-left: 0;
    padding-top: 67px;
  }

  .mobile-header {
    position: fixed;
    z-index: 60;
    inset: 0 0 auto;
    height: 67px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(12px);
  }

  .mobile-header-inner {
    width: min(100% - 30px, 1280px);
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
  }

  .mobile-brand {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-dark);
    font-size: 14px;
    font-weight: 900;
  }

  .mobile-brand .brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 11px;
  }

  .mobile-brand-text {
    max-width: 185px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  .mobile-menu-button {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--primary-dark);
    background: #fff;
  }

  .mobile-menu-button svg {
    width: 22px;
    height: 22px;
  }

  .mobile-menu-panel {
    position: fixed;
    z-index: 59;
    top: 67px;
    left: 0;
    right: 0;
    display: block;
    visibility: hidden;
    padding: 14px 16px 19px;
    border-bottom: 1px solid var(--border);
    background: #fff;
    box-shadow: 0 18px 35px rgba(30,58,95,.12);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  }

  .mobile-menu-panel.open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .mobile-menu-panel .side-nav {
    margin-top: 0;
  }

  .mobile-menu-panel .nav-link {
    justify-content: flex-start;
  }

  .content-container {
    width: min(100% - 30px, 1280px);
  }

  .category-hero {
    padding: 52px 0 48px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .hero-title {
    font-size: clamp(31px, 9vw, 39px);
  }

  .hero-summary {
    font-size: 16px;
  }

  .data-summary::before {
    right: -6px;
  }

  .filter-layout {
    display: block;
  }

  .filter-title {
    margin-bottom: 10px;
  }

  .timeline-wrap::before {
    left: 8px;
  }

  .timeline-node {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-left: 32px;
    padding-bottom: 42px;
  }

  .timeline-date {
    padding-top: 0;
    text-align: left;
  }

  .timeline-date small {
    display: inline;
    margin-left: 7px;
  }

  .timeline-dot {
    left: 0;
    top: 3px;
  }

  .timeline-node:nth-child(even) .timeline-cards {
    padding-left: 0;
  }

  .editor-track {
    grid-auto-columns: minmax(280px, 87%);
  }

  .standard-intro {
    padding: 30px 25px;
  }

  .standard-intro h2 {
    font-size: 28px;
  }

  .feedback-cta {
    grid-template-columns: 1fr;
    padding: 34px 26px;
  }

  .feedback-cta .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px 24px;
  }

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  :root {
    --section-space: 58px;
  }

  .hero-actions {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .metric-row {
    padding: 15px;
  }

  .card-cover {
    min-height: 150px;
  }

  .card-body {
    padding: 19px;
  }

  .standard-item {
    grid-template-columns: 42px minmax(0, 1fr);
    padding: 18px;
  }

  .standard-icon {
    width: 42px;
    height: 42px;
  }

  .faq-question {
    padding-inline: 18px;
  }

  .faq-answer p {
    padding-inline: 18px;
  }

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

  .footer-grid > div:first-child {
    grid-column: auto;
  }

  .age-dialog-top,
  .age-dialog-body {
    padding-inline: 22px;
  }

  .age-dialog-actions {
    grid-template-columns: 1fr;
  }

  .notice-toast {
    right: 15px;
    bottom: 15px;
    left: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .content-card:hover,
  .editor-card:hover,
  .btn:hover {
    transform: none;
  }
}