/* roulang page: index */
:root {
            --bg: #171218;
            --bg-deep: #0e0b0f;
            --surface: #211a22;
            --surface-2: #2b222b;
            --surface-3: #352a34;
            --text: #fff9f4;
            --muted: #bdb1b9;
            --subtle: #857a82;
            --line: #493b47;
            --line-strong: #675664;
            --coral: #ff6b5f;
            --coral-dark: #d94b43;
            --lime: #c7f36b;
            --cyan: #62d9d0;
            --yellow: #ffd166;
            --danger: #ff735d;
            --success: #a9e85f;
            --radius-sm: 2px;
            --radius: 6px;
            --shadow: 4px 4px 0 #090709;
            --shadow-small: 2px 2px 0 #090709;
            --container: 1220px;
            --section-space: 88px;
            --transition: 160ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 88px;
        }

        body {
            margin: 0;
            min-width: 320px;
            overflow-x: hidden;
            color: var(--text);
            background-color: var(--bg);
            font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            letter-spacing: 0;
        }

        body.menu-open,
        body.modal-open {
            overflow: hidden;
        }

        button,
        input,
        select,
        textarea {
            color: inherit;
            font: inherit;
            letter-spacing: 0;
        }

        button,
        select {
            cursor: pointer;
        }

        button:disabled {
            cursor: not-allowed;
        }

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        p {
            margin-top: 0;
        }

        h1,
        h2,
        h3 {
            letter-spacing: 0;
            text-wrap: balance;
        }

        h1 {
            max-width: 900px;
            margin-bottom: 22px;
            font-size: 54px;
            line-height: 1.16;
            font-weight: 900;
        }

        h2 {
            margin-bottom: 14px;
            font-size: 34px;
            line-height: 1.25;
            font-weight: 850;
        }

        h3 {
            margin-bottom: 10px;
            font-size: 20px;
            line-height: 1.4;
        }

        :focus-visible {
            outline: 3px solid var(--yellow);
            outline-offset: 3px;
        }

        ::selection {
            color: var(--bg-deep);
            background: var(--lime);
        }

        .container {
            width: min(calc(100% - 40px), var(--container));
            margin-inline: auto;
        }

        .skip-link {
            position: fixed;
            top: 8px;
            left: 8px;
            z-index: 2000;
            padding: 10px 14px;
            color: var(--bg-deep);
            background: var(--yellow);
            transform: translateY(-150%);
        }

        .skip-link:focus {
            transform: translateY(0);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--line);
            background: rgba(14, 11, 15, 0.98);
            box-shadow: 0 4px 0 rgba(0, 0, 0, 0.3);
        }

        .nav-wrap {
            display: flex;
            min-height: 76px;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            min-width: 0;
            align-items: center;
            gap: 12px;
            font-size: 17px;
            font-weight: 900;
            line-height: 1.25;
        }

        .brand-mark {
            display: grid;
            width: 38px;
            height: 38px;
            flex: 0 0 auto;
            place-items: center;
            border: 2px solid var(--coral);
            color: var(--lime);
            background: var(--surface);
            box-shadow: 3px 3px 0 var(--coral-dark);
            font-family: Consolas, monospace;
            font-size: 14px;
        }

        .brand-text {
            overflow-wrap: anywhere;
        }

        .nav-list {
            display: flex;
            align-items: stretch;
            gap: 8px;
        }

        .nav-link {
            position: relative;
            display: flex;
            min-height: 44px;
            align-items: center;
            padding: 8px 15px;
            border: 1px solid transparent;
            color: var(--muted);
            font-size: 15px;
            font-weight: 700;
            transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
        }

        .nav-link:hover {
            border-color: var(--line);
            color: var(--text);
            background: var(--surface);
            transform: translateY(-2px);
        }

        .nav-link.active {
            border-color: var(--coral);
            color: var(--bg-deep);
            background: var(--coral);
            box-shadow: 2px 2px 0 var(--lime);
        }

        .menu-toggle {
            display: none;
            width: 46px;
            height: 46px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line-strong);
            border-radius: var(--radius-sm);
            color: var(--text);
            background: var(--surface);
            box-shadow: var(--shadow-small);
        }

        .menu-toggle:hover {
            border-color: var(--coral);
            background: var(--surface-2);
        }

        .menu-bars,
        .menu-bars::before,
        .menu-bars::after {
            display: block;
            width: 22px;
            height: 2px;
            background: currentColor;
            transition: transform var(--transition), opacity var(--transition);
        }

        .menu-bars {
            position: relative;
        }

        .menu-bars::before,
        .menu-bars::after {
            position: absolute;
            left: 0;
            content: "";
        }

        .menu-bars::before {
            top: -7px;
        }

        .menu-bars::after {
            top: 7px;
        }

        .menu-toggle[aria-expanded="true"] .menu-bars {
            background: transparent;
        }

        .menu-toggle[aria-expanded="true"] .menu-bars::before {
            top: 0;
            transform: rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] .menu-bars::after {
            top: 0;
            transform: rotate(-45deg);
        }

        .nav-overlay {
            display: none;
        }

        .hero {
            position: relative;
            min-height: 610px;
            overflow: hidden;
            border-bottom: 2px solid var(--line);
            background:
                linear-gradient(rgba(14, 11, 15, 0.76), rgba(14, 11, 15, 0.92)),
                repeating-linear-gradient(0deg, transparent 0 5px, rgba(255, 255, 255, 0.025) 5px 6px),
                repeating-linear-gradient(90deg, var(--surface) 0 78px, var(--surface-2) 78px 80px);
        }

        .hero::after {
            position: absolute;
            right: 0;
            bottom: 0;
            width: 38%;
            height: 14px;
            background: var(--coral);
            box-shadow: -90px 0 0 var(--lime), -180px 0 0 var(--cyan);
            content: "";
        }

        .hero-grid {
            display: grid;
            min-height: 610px;
            grid-template-columns: minmax(0, 8fr) minmax(270px, 4fr);
            align-items: center;
            gap: 64px;
            padding-block: 74px 68px;
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 16px;
            color: var(--lime);
            font-family: Consolas, "Microsoft YaHei", monospace;
            font-size: 13px;
            font-weight: 800;
        }

        .eyebrow::before,
        .section-kicker::before {
            width: 11px;
            height: 11px;
            border: 2px solid currentColor;
            background: var(--surface);
            box-shadow: 2px 2px 0 currentColor;
            content: "";
        }

        .hero-lead {
            max-width: 760px;
            margin-bottom: 28px;
            color: #d9d0d5;
            font-size: 18px;
            line-height: 1.9;
        }

        .hero-actions,
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .button {
            display: inline-flex;
            min-height: 48px;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 10px 20px;
            border: 2px solid transparent;
            border-radius: var(--radius-sm);
            font-weight: 850;
            line-height: 1.3;
            transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .button::after {
            font-family: Arial, sans-serif;
            content: "→";
        }

        .button-primary {
            border-color: var(--coral);
            color: #170d0d;
            background: var(--coral);
            box-shadow: 4px 4px 0 var(--lime);
        }

        .button-primary:hover {
            color: var(--bg-deep);
            background: var(--lime);
            border-color: var(--lime);
            box-shadow: 2px 2px 0 var(--coral);
            transform: translate(2px, 2px);
        }

        .button-secondary {
            border-color: var(--line-strong);
            color: var(--text);
            background: var(--surface);
            box-shadow: var(--shadow-small);
        }

        .button-secondary:hover {
            border-color: var(--cyan);
            color: var(--cyan);
            background: var(--surface-2);
            transform: translateY(-2px);
        }

        .button:active {
            transform: translate(2px, 2px);
            box-shadow: none;
        }

        .hero-console {
            position: relative;
            border: 2px solid var(--line-strong);
            background: var(--bg-deep);
            box-shadow: 7px 7px 0 rgba(255, 107, 95, 0.42);
        }

        .console-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 14px;
            border-bottom: 1px solid var(--line);
            color: var(--muted);
            background: var(--surface);
            font-family: Consolas, monospace;
            font-size: 12px;
        }

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

        .status-live::before {
            width: 8px;
            height: 8px;
            background: var(--lime);
            box-shadow: 0 0 0 2px rgba(199, 243, 107, 0.18);
            content: "";
        }

        .preview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 5px;
            padding: 14px;
        }

        .preview-tile {
            position: relative;
            display: grid;
            aspect-ratio: 1 / 1;
            place-items: center;
            overflow: hidden;
            border: 1px solid var(--line);
            color: rgba(255, 255, 255, 0.82);
            background:
                repeating-linear-gradient(45deg, rgba(255,255,255,.04) 0 8px, transparent 8px 16px),
                var(--surface-2);
            font-family: Consolas, monospace;
            font-size: 12px;
        }

        .preview-tile:nth-child(2),
        .preview-tile:nth-child(6) {
            color: var(--bg-deep);
            background-color: var(--cyan);
        }

        .preview-tile:nth-child(4),
        .preview-tile:nth-child(8) {
            color: var(--bg-deep);
            background-color: var(--coral);
        }

        .preview-tile:nth-child(5) {
            color: var(--bg-deep);
            background-color: var(--lime);
        }

        .age-strip {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px;
            border-top: 1px solid var(--line);
            color: var(--muted);
            background: var(--surface);
            font-size: 13px;
        }

        .age-badge {
            display: inline-grid;
            width: 34px;
            height: 34px;
            flex: 0 0 auto;
            place-items: center;
            border: 2px solid var(--yellow);
            color: var(--yellow);
            font-weight: 900;
            line-height: 1;
        }

        main section:not(.hero) {
            padding-block: var(--section-space);
        }

        .section-heading {
            display: grid;
            grid-template-columns: minmax(0, 7fr) minmax(260px, 5fr);
            align-items: end;
            gap: 48px;
            margin-bottom: 38px;
        }

        .section-heading p {
            margin-bottom: 0;
            color: var(--muted);
            line-height: 1.85;
        }

        .metrics-section {
            border-bottom: 1px solid var(--line);
            background: var(--bg-deep);
        }

        .metric-board {
            display: grid;
            grid-template-columns: 1.15fr 1fr 1fr 1.2fr;
            border: 2px solid var(--line-strong);
            background:
                repeating-linear-gradient(0deg, transparent 0 31px, rgba(255,255,255,.028) 31px 32px),
                var(--surface);
            box-shadow: var(--shadow);
        }

        .metric-item {
            min-width: 0;
            padding: 28px 24px;
            border-right: 1px solid var(--line);
        }

        .metric-item:last-child {
            border-right: 0;
        }

        .metric-value {
            display: block;
            margin-bottom: 4px;
            color: var(--lime);
            font-family: Consolas, "Microsoft YaHei", monospace;
            font-size: 34px;
            font-weight: 900;
            line-height: 1.2;
        }

        .metric-item:nth-child(2) .metric-value {
            color: var(--coral);
        }

        .metric-item:nth-child(3) .metric-value {
            color: var(--cyan);
        }

        .metric-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 800;
        }

        .metric-note {
            color: var(--muted);
            font-size: 14px;
        }

        .matrix-section {
            background: var(--bg);
        }

        .index-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 18px;
            padding: 12px;
            border: 1px solid var(--line);
            background: var(--surface);
        }

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

        .filter-button {
            min-height: 42px;
            padding: 8px 14px;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            color: var(--muted);
            background: var(--bg-deep);
            transition: color var(--transition), border-color var(--transition), background var(--transition);
        }

        .filter-button:hover {
            border-color: var(--cyan);
            color: var(--text);
        }

        .filter-button.active {
            border-color: var(--lime);
            color: var(--bg-deep);
            background: var(--lime);
            font-weight: 800;
        }

        .toolbar-state {
            color: var(--muted);
            font-size: 14px;
            white-space: nowrap;
        }

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 14px;
        }

        .index-card {
            position: relative;
            min-height: 216px;
            overflow: hidden;
            border: 2px solid var(--line);
            border-radius: var(--radius);
            background: var(--surface);
            box-shadow: var(--shadow-small);
            transition: border-color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .index-card:hover {
            border-color: var(--coral);
            background: var(--surface-2);
            box-shadow: 4px 4px 0 var(--coral-dark);
            transform: translateY(-3px);
        }

        .index-card.primary {
            grid-column: span 7;
        }

        .index-card.secondary {
            grid-column: span 5;
        }

        .index-card.compact {
            grid-column: span 4;
            min-height: 176px;
        }

        .card-link {
            display: flex;
            height: 100%;
            flex-direction: column;
            justify-content: space-between;
            padding: 25px;
        }

        .card-number {
            position: absolute;
            top: 18px;
            right: 20px;
            color: var(--line-strong);
            font-family: Consolas, monospace;
            font-size: 32px;
            font-weight: 900;
        }

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }

        .tag {
            display: inline-flex;
            min-height: 27px;
            align-items: center;
            padding: 3px 8px;
            border: 1px solid var(--line-strong);
            border-radius: 2px;
            color: var(--muted);
            background: var(--bg-deep);
            font-size: 12px;
            font-weight: 700;
        }

        .tag-accent {
            border-color: var(--coral);
            color: var(--coral);
        }

        .tag-lime {
            border-color: var(--lime);
            color: var(--lime);
        }

        .tag-cyan {
            border-color: var(--cyan);
            color: var(--cyan);
        }

        .index-card p {
            max-width: 620px;
            margin-bottom: 20px;
            color: var(--muted);
        }

        .card-action {
            color: var(--lime);
            font-weight: 850;
        }

        .card-action::after {
            margin-left: 8px;
            content: "→";
        }

        .empty-state {
            display: none;
            grid-column: 1 / -1;
            padding: 34px;
            border: 2px dashed var(--line-strong);
            color: var(--muted);
            text-align: center;
            background: var(--surface);
        }

        .empty-state.visible {
            display: block;
        }

        .compare-section {
            border-block: 1px solid var(--line);
            background: var(--surface);
        }

        .compare-scroll {
            overflow-x: auto;
            border: 2px solid var(--line-strong);
            box-shadow: var(--shadow);
        }

        .compare-grid {
            display: grid;
            min-width: 780px;
            grid-template-columns: 190px repeat(3, minmax(190px, 1fr));
            background: var(--bg-deep);
        }

        .compare-cell {
            min-height: 76px;
            padding: 18px 20px;
            border-right: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .compare-cell:nth-child(4n) {
            border-right: 0;
        }

        .compare-cell:nth-last-child(-n+4) {
            border-bottom: 0;
        }

        .compare-head {
            color: var(--text);
            background: var(--surface-2);
            font-weight: 850;
        }

        .compare-head.current {
            color: var(--bg-deep);
            background: var(--lime);
        }

        .compare-label {
            color: var(--muted);
            background: var(--surface);
            font-weight: 800;
        }

        .state-mark {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .state-mark::before {
            width: 9px;
            height: 9px;
            background: var(--cyan);
            content: "";
        }

        .progress-track {
            width: 100%;
            height: 10px;
            margin-top: 9px;
            border: 1px solid var(--line-strong);
            background: var(--surface);
        }

        .progress-fill {
            display: block;
            height: 100%;
            background: var(--coral);
        }

        .progress-fill.medium {
            width: 72%;
            background: var(--yellow);
        }

        .progress-fill.high {
            width: 92%;
            background: var(--lime);
        }

        .timeline-section {
            background: var(--bg);
        }

        .timeline {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin-top: 42px;
        }

        .timeline::before {
            position: absolute;
            top: 13px;
            right: 8%;
            left: 8%;
            height: 2px;
            background: var(--line-strong);
            content: "";
        }

        .timeline-item {
            position: relative;
            padding: 42px 26px 0 0;
        }

        .timeline-dot {
            position: absolute;
            top: 5px;
            left: 0;
            z-index: 1;
            width: 18px;
            height: 18px;
            border: 3px solid var(--bg);
            background: var(--coral);
            box-shadow: 0 0 0 2px var(--coral);
        }

        .timeline-item:nth-child(2) .timeline-dot {
            background: var(--cyan);
            box-shadow: 0 0 0 2px var(--cyan);
        }

        .timeline-item:nth-child(3) .timeline-dot {
            background: var(--yellow);
            box-shadow: 0 0 0 2px var(--yellow);
        }

        .timeline-item:nth-child(4) .timeline-dot {
            background: var(--lime);
            box-shadow: 0 0 0 2px var(--lime);
        }

        .timeline-step {
            display: block;
            margin-bottom: 6px;
            color: var(--subtle);
            font-family: Consolas, monospace;
            font-size: 13px;
        }

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

        .faq-section {
            border-block: 1px solid var(--line);
            background: var(--bg-deep);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 68px;
        }

        .faq-intro {
            position: sticky;
            top: 112px;
            align-self: start;
        }

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

        .faq-list {
            border-top: 2px solid var(--line-strong);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-question {
            display: grid;
            width: 100%;
            min-height: 70px;
            grid-template-columns: 42px 1fr 28px;
            align-items: center;
            gap: 10px;
            padding: 14px 0;
            border: 0;
            color: var(--text);
            background: transparent;
            text-align: left;
            font-weight: 850;
        }

        .faq-question:hover {
            color: var(--lime);
        }

        .faq-index {
            color: var(--subtle);
            font-family: Consolas, monospace;
            font-size: 13px;
        }

        .faq-icon {
            display: grid;
            width: 26px;
            height: 26px;
            place-items: center;
            border: 1px solid var(--line-strong);
            color: var(--coral);
            font-size: 21px;
            line-height: 1;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            color: var(--bg-deep);
            background: var(--lime);
            border-color: var(--lime);
        }

        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 220ms ease;
        }

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

        .faq-answer p {
            margin: 0;
            padding: 0 48px 24px 52px;
            color: var(--muted);
        }

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

        .news-section {
            background: var(--bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 7fr) minmax(280px, 5fr);
            gap: 24px;
        }

        .news-list {
            border-top: 2px solid var(--line-strong);
        }

        .news-item {
            display: grid;
            grid-template-columns: 76px 1fr auto;
            align-items: center;
            gap: 18px;
            min-height: 92px;
            border-bottom: 1px solid var(--line);
            transition: background var(--transition), padding var(--transition);
        }

        .news-item:hover {
            padding-inline: 12px;
            background: var(--surface);
        }

        .news-code {
            color: var(--coral);
            font-family: Consolas, monospace;
            font-size: 13px;
            font-weight: 800;
        }

        .news-title {
            font-weight: 800;
        }

        .news-title small {
            display: block;
            margin-top: 4px;
            color: var(--muted);
            font-size: 13px;
            font-weight: 400;
        }

        .news-arrow {
            color: var(--lime);
            font-size: 20px;
        }

        .recommend-panel {
            border: 2px solid var(--line-strong);
            background: var(--surface);
            box-shadow: var(--shadow);
        }

        .recommend-head {
            padding: 17px 20px;
            border-bottom: 1px solid var(--line);
            color: var(--lime);
            font-weight: 850;
        }

        .recommend-item {
            display: block;
            padding: 20px;
            border-bottom: 1px solid var(--line);
            transition: color var(--transition), background var(--transition);
        }

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

        .recommend-item:hover {
            color: var(--coral);
            background: var(--surface-2);
        }

        .recommend-item span {
            display: block;
            margin-top: 6px;
            color: var(--muted);
            font-size: 13px;
        }

        .form-section {
            position: relative;
            border-top: 2px solid var(--coral);
            background:
                repeating-linear-gradient(90deg, transparent 0 63px, rgba(255,255,255,.025) 63px 64px),
                var(--surface-2);
        }

        .form-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 70px;
            align-items: start;
        }

        .form-copy p {
            color: var(--muted);
        }

        .access-list {
            margin-top: 26px;
        }

        .access-list li {
            position: relative;
            margin-bottom: 13px;
            padding-left: 26px;
            color: #ddd3d8;
        }

        .access-list li::before {
            position: absolute;
            top: 9px;
            left: 0;
            width: 10px;
            height: 10px;
            border: 2px solid var(--lime);
            content: "";
        }

        .access-form {
            padding: 28px;
            border: 2px solid var(--line-strong);
            background: var(--bg-deep);
            box-shadow: 7px 7px 0 rgba(199, 243, 107, 0.28);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 20px;
        }

        .field {
            min-width: 0;
        }

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

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

        .field input,
        .field select,
        .field textarea {
            width: 100%;
            min-height: 48px;
            padding: 11px 13px;
            border: 2px solid var(--line);
            border-radius: var(--radius-sm);
            color: var(--text);
            background: var(--surface);
            transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
        }

        .field textarea {
            min-height: 112px;
            resize: vertical;
        }

        .field input::placeholder,
        .field textarea::placeholder {
            color: var(--subtle);
        }

        .field input:hover,
        .field select:hover,
        .field textarea:hover {
            border-color: var(--line-strong);
            background: var(--surface-2);
        }

        .field input:focus,
        .field select:focus,
        .field textarea:focus {
            border-color: var(--cyan);
            outline: 2px solid rgba(98, 217, 208, 0.22);
            outline-offset: 1px;
        }

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

        .field-error {
            display: none;
            margin-top: 6px;
            color: var(--danger);
            font-size: 13px;
        }

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

        .check-row {
            display: flex;
            align-items: flex-start;
            gap: 11px;
            margin-top: 20px;
            color: var(--muted);
            font-size: 14px;
        }

        .check-row input {
            width: 20px;
            height: 20px;
            flex: 0 0 auto;
            margin-top: 3px;
            accent-color: var(--lime);
        }

        .form-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-top: 24px;
        }

        .form-actions .button {
            border: 2px solid var(--coral);
        }

        .form-status {
            min-height: 28px;
            color: var(--muted);
            font-size: 14px;
        }

        .form-status.success {
            color: var(--success);
        }

        .form-status.error {
            color: var(--danger);
        }

        .form-status.loading {
            color: var(--yellow);
        }

        .site-footer {
            border-top: 2px solid var(--line-strong);
            background: var(--bg-deep);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 6fr 3fr 3fr;
            gap: 48px;
            padding-block: 58px 42px;
        }

        .footer-brand {
            margin-bottom: 14px;
            font-size: 20px;
            font-weight: 900;
        }

        .footer-copy {
            max-width: 560px;
            margin-bottom: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-title {
            margin-bottom: 14px;
            color: var(--subtle);
            font-size: 13px;
            font-weight: 800;
        }

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

        .footer-links a {
            color: var(--muted);
            transition: color var(--transition), transform var(--transition);
        }

        .footer-links a:hover {
            color: var(--lime);
            transform: translateX(3px);
        }

        .compliance-note {
            color: var(--muted);
            font-size: 14px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-block: 20px;
            border-top: 1px solid var(--line);
            color: var(--subtle);
            font-size: 13px;
        }

        .footer-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-status::before {
            width: 8px;
            height: 8px;
            background: var(--lime);
            content: "";
        }

        .age-modal {
            position: fixed;
            inset: 0;
            z-index: 1800;
            display: none;
            place-items: center;
            padding: 20px;
            background: rgba(7, 5, 7, 0.94);
        }

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

        .age-dialog {
            width: min(100%, 520px);
            padding: 30px;
            border: 2px solid var(--yellow);
            background: var(--surface);
            box-shadow: 8px 8px 0 var(--coral-dark);
        }

        .age-dialog .age-badge {
            width: 48px;
            height: 48px;
            margin-bottom: 20px;
            font-size: 18px;
        }

        .age-dialog h2 {
            font-size: 28px;
        }

        .age-dialog p {
            color: var(--muted);
        }

        .age-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 22px;
        }

        .age-denied {
            display: none;
            margin-top: 16px;
            padding: 12px;
            border: 1px solid var(--danger);
            color: var(--danger);
            background: var(--bg-deep);
        }

        .age-denied.visible {
            display: block;
        }

        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }

            h1 {
                font-size: 45px;
            }

            .hero-grid {
                grid-template-columns: minmax(0, 7fr) minmax(260px, 5fr);
                gap: 36px;
            }

            .metric-board {
                grid-template-columns: repeat(2, 1fr);
            }

            .metric-item:nth-child(2) {
                border-right: 0;
            }

            .metric-item:nth-child(-n+2) {
                border-bottom: 1px solid var(--line);
            }

            .index-card.primary,
            .index-card.secondary {
                grid-column: span 6;
            }

            .index-card.compact {
                grid-column: span 4;
            }

            .faq-layout,
            .form-layout {
                gap: 44px;
            }

            .footer-main {
                grid-template-columns: 5fr 3fr 4fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 60px;
            }

            .container {
                width: min(calc(100% - 28px), var(--container));
            }

            h1 {
                font-size: 37px;
            }

            h2 {
                font-size: 29px;
            }

            .menu-toggle {
                display: inline-flex;
                flex: 0 0 auto;
            }

            .site-nav {
                position: fixed;
                top: 76px;
                right: 0;
                z-index: 1002;
                width: min(88vw, 360px);
                height: calc(100dvh - 76px);
                padding: 22px;
                border-left: 2px solid var(--line-strong);
                background: var(--bg-deep);
                box-shadow: -8px 0 0 rgba(0,0,0,.28);
                transform: translateX(105%);
                transition: transform 220ms ease;
            }

            .site-nav.open {
                transform: translateX(0);
            }

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

            .nav-link {
                min-height: 52px;
                border-bottom-color: var(--line);
            }

            .nav-overlay {
                position: fixed;
                inset: 76px 0 0;
                z-index: 1001;
                background: rgba(0,0,0,.68);
            }

            .nav-overlay.visible {
                display: block;
            }

            .hero {
                min-height: auto;
            }

            .hero-grid {
                min-height: auto;
                grid-template-columns: 1fr;
                gap: 34px;
                padding-block: 56px 52px;
            }

            .hero-console {
                max-width: 520px;
            }

            .section-heading {
                grid-template-columns: 1fr;
                gap: 8px;
                margin-bottom: 30px;
            }

            .index-toolbar {
                align-items: flex-start;
                flex-direction: column;
            }

            .toolbar-state {
                white-space: normal;
            }

            .index-card.primary,
            .index-card.secondary {
                grid-column: span 12;
            }

            .index-card.compact {
                grid-column: span 6;
            }

            .timeline {
                grid-template-columns: 1fr 1fr;
                gap: 28px 20px;
            }

            .timeline::before {
                display: none;
            }

            .timeline-item {
                padding-right: 8px;
            }

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

            .faq-intro {
                position: static;
            }

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

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

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

            .footer-intro {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .nav-wrap {
                min-height: 70px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
            }

            .brand-text {
                max-width: 210px;
                font-size: 14px;
            }

            .site-nav {
                top: 70px;
                height: calc(100dvh - 70px);
            }

            .nav-overlay {
                inset: 70px 0 0;
            }

            h1 {
                font-size: 31px;
                line-height: 1.25;
            }

            h2 {
                font-size: 26px;
            }

            h3 {
                font-size: 18px;
            }

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

            .hero-actions,
            .cta-actions {
                flex-direction: column;
            }

            .hero-actions .button,
            .cta-actions .button {
                width: 100%;
            }

            .preview-grid {
                grid-template-columns: repeat(3, 1fr);
            }

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

            .metric-item {
                border-right: 0;
                border-bottom: 1px solid var(--line);
            }

            .metric-item:nth-child(2) {
                border-right: 0;
            }

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

            .filter-group {
                display: grid;
                width: 100%;
                grid-template-columns: 1fr 1fr;
            }

            .index-card.compact {
                grid-column: span 12;
            }

            .card-link {
                padding: 21px;
            }

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

            .faq-question {
                grid-template-columns: 32px 1fr 28px;
            }

            .faq-answer p {
                padding-left: 42px;
                padding-right: 8px;
            }

            .news-item {
                grid-template-columns: 54px 1fr 20px;
                gap: 10px;
            }

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

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

            .access-form {
                padding: 20px;
            }

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

            .form-actions .button {
                width: 100%;
            }

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

            .footer-intro {
                grid-column: auto;
            }

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

            .age-dialog {
                padding: 22px;
            }

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

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                scroll-behavior: auto !important;
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
            }
        }

/* roulang page: category1 */
:root{
 --bg:#171218;
 --bg-deep:#0e0b0f;
 --surface:#211a22;
 --surface-2:#2b222b;
 --surface-3:#352a34;
 --text:#fff9f4;
 --muted:#bdb1b9;
 --subtle:#857a82;
 --line:#493b47;
 --line-strong:#675664;
 --coral:#ff6b5f;
 --coral-dark:#d94b43;
 --lime:#c7f36b;
 --cyan:#62d9d0;
 --yellow:#ffd166;
 --danger:#ff735d;
 --success:#a9e85f;
 --radius-sm:2px;
 --radius:6px;
 --shadow:4px 4px 0 #090709;
 --shadow-small:2px 2px 0 #090709;
 --container:1220px;
 --section-space:72px;
 --transition:160ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
 margin:0;min-width:320px;overflow-x:hidden;color:var(--text);
 background:var(--bg);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
 font-size:16px;line-height:1.75;letter-spacing:0
}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;letter-spacing:0;color:inherit}
button,select{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.6}
img{display:block;max-width:100%}
ul{margin:0;padding:0;list-style:none}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.site-header{
 position:sticky;top:0;z-index:1000;border-bottom:2px solid var(--line);
 background:rgba(14,11,15,.98);box-shadow:0 4px 0 rgba(0,0,0,.3)
}
.nav-wrap{display:flex;min-height:76px;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;min-width:0;align-items:center;gap:12px;font-size:17px;font-weight:900;line-height:1.25}
.brand-mark{
 display:grid;width:38px;height:38px;flex:0 0 auto;place-items:center;border:2px solid var(--coral);
 color:var(--lime);background:var(--surface);box-shadow:3px 3px 0 var(--coral-dark);
 font-family:Consolas,monospace;font-size:14px
}
.brand-text{overflow-wrap:anywhere}
.nav-list{display:flex;align-items:stretch;gap:8px}
.nav-link{
 position:relative;display:flex;min-height:44px;align-items:center;padding:8px 15px;
 border:1px solid transparent;color:var(--muted);font-size:15px;font-weight:700;
 transition:color var(--transition),background var(--transition),border-color var(--transition),transform var(--transition)
}
.nav-link:hover{border-color:var(--line);color:var(--text);background:var(--surface);transform:translateY(-2px)}
.nav-link.active{border-color:var(--coral);color:var(--bg-deep);background:var(--coral);box-shadow:2px 2px 0 var(--lime)}
.menu-toggle{
 display:none;width:46px;height:46px;align-items:center;justify-content:center;border:1px solid var(--line-strong);
 border-radius:var(--radius-sm);color:var(--text);background:var(--surface);box-shadow:var(--shadow-small)
}
.menu-bars,.menu-bars:before,.menu-bars:after{display:block;width:22px;height:2px;background:currentColor;transition:transform var(--transition),opacity var(--transition)}
.menu-bars{position:relative}
.menu-bars:before,.menu-bars:after{position:absolute;left:0;content:""}
.menu-bars:before{top:-7px}.menu-bars:after{top:7px}
.menu-toggle[aria-expanded=true] .menu-bars{background:transparent}
.menu-toggle[aria-expanded=true] .menu-bars:before{top:0;transform:rotate(45deg)}
.menu-toggle[aria-expanded=true] .menu-bars:after{top:0;transform:rotate(-45deg)}
.nav-overlay{display:none}
.page-hero{
 position:relative;overflow:hidden;border-bottom:2px solid var(--line);
 padding:88px 0 78px;background-color:var(--bg-deep);
 background-image:repeating-linear-gradient(0deg,transparent 0 5px,rgba(255,255,255,.025) 5px 6px),repeating-linear-gradient(90deg,rgba(98,217,208,.05) 0 1px,transparent 1px 82px)
}
.page-hero:before{
 position:absolute;inset:0;content:"";opacity:.45;
 background:linear-gradient(90deg,transparent 0 8%,var(--coral) 8% 8.3%,transparent 8.3% 100%),linear-gradient(0deg,transparent 0 80%,var(--cyan) 80% 80.4%,transparent 80.4%)
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:70px;align-items:end}
.kicker,.eyebrow{
 display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-family:Consolas,monospace;
 font-size:13px;font-weight:700;letter-spacing:0
}
.kicker:before,.eyebrow:before{width:9px;height:9px;content:"";background:var(--coral);box-shadow:3px 3px 0 var(--yellow)}
h1,h2,h3,p{margin-top:0}
h1{max-width:760px;margin-bottom:22px;font-size:clamp(38px,5vw,68px);line-height:1.1;letter-spacing:0;font-weight:900}
h2{margin-bottom:14px;font-size:34px;line-height:1.2}
h3{margin-bottom:8px;font-size:20px;line-height:1.35}
.hero-lead{max-width:690px;margin-bottom:30px;color:var(--muted);font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{
 display:inline-flex;min-height:48px;align-items:center;justify-content:center;gap:10px;padding:10px 18px;
 border:2px solid var(--coral);border-radius:var(--radius-sm);color:var(--bg-deep);background:var(--coral);
 box-shadow:var(--shadow-small);font-weight:800;transition:transform var(--transition),background var(--transition),color var(--transition),border-color var(--transition)
}
.btn:after{content:"→";font-size:18px}
.btn:hover{transform:translate(2px,2px);background:var(--lime);border-color:var(--lime)}
.btn-secondary{color:var(--text);background:transparent;border-color:var(--line-strong)}
.btn-secondary:hover{color:var(--bg-deep);background:var(--cyan);border-color:var(--cyan)}
.btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
.hero-panel{border:2px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow);padding:22px}
.panel-top{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:18px}
.panel-code{color:var(--cyan);font:700 13px Consolas,monospace}
.status{display:inline-flex;align-items:center;gap:7px;color:var(--lime);font-size:13px}
.status:before{width:8px;height:8px;content:"";background:var(--success);box-shadow:0 0 0 3px rgba(169,232,95,.12)}
.scan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:20px 0}
.scan-cell{aspect-ratio:1.15;border:1px solid var(--line);background:var(--surface-2);position:relative;overflow:hidden}
.scan-cell:after{position:absolute;inset:24% 14%;content:"";border:1px solid var(--coral);background:rgba(255,107,95,.12)}
.scan-cell:nth-child(2):after{border-color:var(--cyan);background:rgba(98,217,208,.12)}
.scan-cell:nth-child(3):after{border-color:var(--lime);background:rgba(199,243,107,.12)}
.scan-cell:nth-child(4):after{border-color:var(--yellow);background:rgba(255,209,102,.12)}
.panel-note{margin:0;color:var(--muted);font-size:14px}
.section{padding:var(--section-space) 0;border-bottom:1px solid var(--line)}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
.section-heading p{max-width:560px;margin:0;color:var(--muted)}
.filter-bar{
 display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:24px;padding:14px;
 border:1px solid var(--line);background:var(--surface)
}
.filter-label{margin-right:5px;color:var(--subtle);font-size:14px;font-weight:700}
.filter-btn{
 min-height:40px;padding:7px 13px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);
 color:var(--muted);background:var(--surface-2);transition:all var(--transition)
}
.filter-btn:hover,.filter-btn.active{color:var(--bg-deep);border-color:var(--lime);background:var(--lime)}
.index-layout{display:grid;grid-template-columns:1.6fr .8fr;gap:28px;align-items:start}
.index-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.index-item{
 position:relative;min-height:210px;padding:18px;border:1px solid var(--line);
 background:var(--surface);box-shadow:2px 2px 0 rgba(9,7,9,.8);transition:transform var(--transition),border-color var(--transition),background var(--transition)
}
.index-item:hover{transform:translate(2px,-2px);border-color:var(--coral);background:var(--surface-2)}
.index-item.featured{grid-column:span 2;min-height:170px;border-left:5px solid var(--coral)}
.item-head{display:flex;justify-content:space-between;gap:10px;margin-bottom:26px}
.item-number{color:var(--coral);font:700 13px Consolas,monospace}
.item-status{color:var(--success);font-size:12px}
.item-title{margin-bottom:4px;font-size:20px}
.item-meta{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0;color:var(--muted);font-size:13px}
.tag{display:inline-flex;padding:3px 8px;border:1px solid var(--line-strong);color:var(--cyan);font-size:12px}
.item-desc{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.item-link{position:absolute;right:18px;bottom:17px;color:var(--lime);font-size:14px;font-weight:700}
.side-panel{padding:22px;border:2px solid var(--line-strong);background:var(--surface-2);box-shadow:var(--shadow)}
.side-panel h3{color:var(--yellow)}
.side-list{margin-top:17px;border-top:1px solid var(--line)}
.side-list li{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
.side-list b{color:var(--text);font-weight:700}
.empty-state{display:none;padding:30px;text-align:center;border:1px dashed var(--line-strong);color:var(--muted);background:var(--surface)}
.compare-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}
.compare-table{width:100%;min-width:700px;border-collapse:collapse}
.compare-table th,.compare-table td{padding:17px 18px;border-bottom:1px solid var(--line);text-align:left}
.compare-table th{color:var(--lime);font-size:14px;background:var(--surface-2)}
.compare-table td{color:var(--muted)}
.compare-table td:first-child{color:var(--text);font-weight:700}
.compare-table tr:last-child td{border-bottom:0}
.good{color:var(--success)!important}.warn{color:var(--yellow)!important}
.faq-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:50px}
.faq-intro p{color:var(--muted)}
.faq-list{border-top:2px solid var(--line-strong)}
details{border-bottom:1px solid var(--line)}
summary{display:flex;justify-content:space-between;gap:20px;align-items:center;min-height:62px;padding:15px 0;cursor:pointer;font-weight:800;list-style:none}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--coral);font:700 24px Consolas,monospace}
details[open] summary:after{content:"−";color:var(--lime)}
.answer{max-width:700px;padding:0 42px 18px 0;color:var(--muted);font-size:15px}
.cta-section{padding:70px 0;background:var(--coral);color:var(--bg-deep)}
.cta-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px;align-items:start}
.cta-section h2{max-width:480px}
.cta-section p{max-width:490px}
.access-form{padding:24px;border:2px solid var(--bg-deep);background:#f76a5f;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:800}
.field input,.field select,.field textarea{
 width:100%;min-height:46px;padding:9px 12px;border:2px solid var(--bg-deep);border-radius:var(--radius-sm);
 color:var(--bg-deep);background:#fff9f4
}
.field textarea{min-height:90px;resize:vertical}
.checkline{display:flex;gap:10px;align-items:flex-start;margin:17px 0;font-size:13px;line-height:1.5}
.checkline input{width:18px;height:18px;flex:0 0 auto;accent-color:var(--bg-deep)}
.form-submit{border-color:var(--bg-deep);color:var(--text);background:var(--bg-deep);box-shadow:none}
.form-submit:hover{color:var(--bg-deep);background:var(--lime);border-color:var(--lime)}
.form-message{min-height:25px;margin:12px 0 0;font-size:14px;font-weight:700}
.site-footer{padding:52px 0 22px;background:var(--bg-deep);border-top:2px solid var(--line)}
.footer-main{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:45px}
.footer-brand{margin-bottom:10px;color:var(--lime);font-size:20px;font-weight:900}
.footer-copy,.compliance-note{margin:0;color:var(--muted);font-size:14px}
.footer-title{margin-bottom:13px;color:var(--yellow);font-size:14px;font-weight:800}
.footer-links{display:flex;flex-direction:column;gap:8px;color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--coral)}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid var(--line);color:var(--subtle);font-size:13px}
.footer-status{color:var(--success)}
@media(max-width:1024px){
 .hero-inner,.cta-layout{grid-template-columns:1fr;gap:32px}
 .hero-panel{max-width:620px}
 .index-layout{grid-template-columns:1fr}
 .side-panel{max-width:620px}
}
@media(max-width:768px){
 :root{--section-space:55px}
 .container{width:min(calc(100% - 28px),var(--container))}
 .nav-wrap{min-height:68px}
 .menu-toggle{display:flex}
 .site-nav{
  position:fixed;top:68px;right:14px;z-index:1001;display:none;width:min(310px,calc(100% - 28px));
  padding:12px;border:2px solid var(--coral);background:var(--bg-deep);box-shadow:var(--shadow)
 }
 .site-nav.open{display:block}
 .nav-list{display:flex;flex-direction:column;gap:5px}
 .nav-link{min-height:48px}
 .nav-overlay{position:fixed;inset:68px 0 0;z-index:999;background:rgba(0,0,0,.64)}
 body.menu-open .nav-overlay{display:block}
 .brand{font-size:15px}.brand-mark{width:34px;height:34px}
 .page-hero{padding:60px 0 54px}
 h1{font-size:42px}
 .hero-lead{font-size:16px}
 .section-heading,.footer-bottom{display:block}
 .section-heading p{margin-top:12px}
 .index-grid{grid-template-columns:1fr}
 .index-item.featured{grid-column:auto}
 .faq-layout{grid-template-columns:1fr;gap:26px}
 .footer-main{grid-template-columns:1fr;gap:28px}
 .footer-status{display:block;margin-top:8px}
 .form-grid{grid-template-columns:1fr}
 .field.full{grid-column:auto}
}
@media(max-width:520px){
 h1{font-size:36px}
 h2{font-size:28px}
 .hero-actions .btn{width:100%}
 .filter-bar{align-items:stretch}
 .filter-label{width:100%}
 .filter-btn{flex:1}
 .scan-grid{grid-template-columns:repeat(2,1fr)}
 .access-form{padding:17px}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --bg:#171218;
  --bg-deep:#0e0b0f;
  --surface:#211a22;
  --surface-2:#2b222b;
  --surface-3:#352a34;
  --text:#fff9f4;
  --muted:#bdb1b9;
  --subtle:#857a82;
  --line:#493b47;
  --line-strong:#675664;
  --coral:#ff6b5f;
  --coral-dark:#d94b43;
  --lime:#c7f36b;
  --cyan:#62d9d0;
  --yellow:#ffd166;
  --danger:#ff735d;
  --success:#a9e85f;
  --radius-sm:2px;
  --radius:6px;
  --shadow:4px 4px 0 #090709;
  --shadow-small:2px 2px 0 #090709;
  --container:1220px;
  --section-space:72px;
  --transition:160ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{
  margin:0;
  min-width:320px;
  overflow-x:hidden;
  color:var(--text);
  background:var(--bg);
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button,select{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.6}
.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  border-bottom:2px solid var(--line);
  background:var(--bg-deep);
  box-shadow:0 4px 0 rgba(0,0,0,.3);
}
.nav-wrap{
  display:flex;
  min-height:76px;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.brand{
  display:inline-flex;
  min-width:0;
  align-items:center;
  gap:12px;
  font-size:17px;
  font-weight:900;
  line-height:1.25;
}
.brand-mark{
  display:grid;
  width:38px;
  height:38px;
  flex:0 0 auto;
  place-items:center;
  border:2px solid var(--coral);
  color:var(--lime);
  background:var(--surface);
  box-shadow:3px 3px 0 var(--coral-dark);
  font-family:Consolas,monospace;
  font-size:14px;
}
.brand-text{overflow-wrap:anywhere}
.site-nav ul{margin:0;padding:0;list-style:none}
.nav-list{display:flex;align-items:stretch;gap:8px}
.nav-link{
  position:relative;
  display:flex;
  min-height:44px;
  align-items:center;
  padding:8px 15px;
  border:1px solid transparent;
  color:var(--muted);
  font-size:15px;
  font-weight:700;
  transition:color var(--transition),background var(--transition),border-color var(--transition),transform var(--transition);
}
.nav-link:hover{border-color:var(--line);color:var(--text);background:var(--surface);transform:translateY(-2px)}
.nav-link.active{
  border-color:var(--coral);
  color:var(--bg-deep);
  background:var(--coral);
  box-shadow:2px 2px 0 var(--lime);
}
.menu-toggle{
  display:none;
  width:46px;
  height:46px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  color:var(--text);
  background:var(--surface);
  box-shadow:var(--shadow-small);
}
.menu-toggle:hover{border-color:var(--coral);background:var(--surface-2)}
.menu-bars,.menu-bars:before,.menu-bars:after{
  display:block;
  width:22px;
  height:2px;
  background:currentColor;
  transition:transform var(--transition),opacity var(--transition);
}
.menu-bars{position:relative}
.menu-bars:before,.menu-bars:after{position:absolute;left:0;content:""}
.menu-bars:before{top:-7px}
.menu-bars:after{top:7px}
.menu-toggle[aria-expanded=true] .menu-bars{background:transparent}
.menu-toggle[aria-expanded=true] .menu-bars:before{top:0;transform:rotate(45deg)}
.menu-toggle[aria-expanded=true] .menu-bars:after{top:0;transform:rotate(-45deg)}
.nav-overlay{display:none}
.page-hero{
  position:relative;
  padding:82px 0 70px;
  overflow:hidden;
  border-bottom:2px solid var(--line);
  background:var(--bg-deep);
}
.page-hero:before{
  position:absolute;
  inset:0;
  z-index:0;
  opacity:.24;
  content:"";
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:34px 34px;
}
.hero-inner{position:relative;z-index:1}
.eyebrow,.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--lime);
  font-family:Consolas,monospace;
  font-size:12px;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.eyebrow:before,.section-kicker:before{
  width:9px;
  height:9px;
  content:"";
  background:var(--coral);
  box-shadow:3px 3px 0 var(--yellow);
}
.page-hero h1{
  max-width:850px;
  margin:22px 0 18px;
  color:var(--text);
  font-size:clamp(34px,5vw,64px);
  font-weight:900;
  line-height:1.16;
  letter-spacing:.01em;
}
.hero-summary{
  max-width:730px;
  margin:0;
  color:var(--muted);
  font-size:18px;
}
.hero-tools{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:30px;
}
.btn{
  display:inline-flex;
  min-height:46px;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:10px 18px;
  border:1px solid var(--coral);
  border-radius:var(--radius-sm);
  color:var(--bg-deep);
  background:var(--coral);
  box-shadow:var(--shadow-small);
  font-weight:800;
  transition:transform var(--transition),background var(--transition),color var(--transition),border-color var(--transition);
}
.btn:hover{transform:translate(-2px,-2px);border-color:var(--lime);background:var(--lime)}
.btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,.filter-btn:focus-visible,.faq-question:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid var(--yellow);
  outline-offset:3px;
}
.btn.secondary{border-color:var(--line-strong);color:var(--text);background:var(--surface)}
.btn.secondary:hover{border-color:var(--cyan);background:var(--surface-2);color:var(--cyan)}
.status-strip{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:44px;
  border:1px solid var(--line-strong);
  background:var(--surface);
  box-shadow:var(--shadow);
}
.status-item{
  flex:1 1 180px;
  min-height:70px;
  padding:14px 18px;
  border-right:1px solid var(--line);
}
.status-item:last-child{border-right:0}
.status-label{display:block;color:var(--subtle);font-size:12px}
.status-value{display:block;margin-top:3px;color:var(--text);font-size:17px;font-weight:800}
.status-value b{color:var(--lime)}
.section{padding:var(--section-space) 0}
.section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:30px;
}
.section-title{margin:8px 0 0;font-size:32px;line-height:1.25}
.section-desc{max-width:540px;margin:0;color:var(--muted)}
.filter-panel{
  display:grid;
  grid-template-columns:minmax(220px,1fr) auto;
  gap:18px;
  align-items:center;
  margin-bottom:30px;
  padding:20px;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-small);
}
.search-box{position:relative}
.search-box input{
  width:100%;
  min-height:46px;
  padding:9px 14px 9px 42px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  outline:0;
  background:var(--bg-deep);
}
.search-box input::placeholder{color:var(--subtle)}
.search-icon{position:absolute;left:15px;top:10px;color:var(--cyan);font-size:19px}
.filter-group{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  min-height:42px;
  padding:8px 13px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  color:var(--muted);
  background:var(--surface-2);
  transition:all var(--transition);
}
.filter-btn:hover,.filter-btn.active{border-color:var(--cyan);color:var(--bg-deep);background:var(--cyan)}
.index-layout{display:grid;grid-template-columns:1.45fr .75fr;gap:24px;align-items:start}
.index-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
}
.index-item{
  display:grid;
  grid-template-columns:112px 1fr;
  gap:15px;
  min-width:0;
  padding:14px;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-small);
  transition:transform var(--transition),border-color var(--transition),background var(--transition);
}
.index-item:hover{transform:translate(-2px,-2px);border-color:var(--coral);background:var(--surface-2)}
.preview{
  position:relative;
  min-height:126px;
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:var(--surface-3);
}
.preview:before{
  position:absolute;
  inset:0;
  content:"";
  opacity:.45;
  background-image:
    linear-gradient(135deg,transparent 45%,var(--coral) 46% 52%,transparent 53%),
    repeating-linear-gradient(0deg,transparent 0 8px,rgba(255,255,255,.12) 9px 10px);
}
.preview-mark{
  position:absolute;
  right:7px;
  bottom:7px;
  padding:3px 5px;
  color:var(--bg-deep);
  background:var(--lime);
  font-family:Consolas,monospace;
  font-size:11px;
  font-weight:900;
}
.item-number{color:var(--coral);font-family:Consolas,monospace;font-size:12px}
.index-item h3{margin:7px 0 8px;font-size:18px;line-height:1.35}
.item-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:9px}
.badge{
  display:inline-flex;
  align-items:center;
  min-height:24px;
  padding:2px 7px;
  border:1px solid var(--line-strong);
  color:var(--muted);
  background:var(--bg-deep);
  font-size:12px;
  line-height:1.3;
}
.badge.highlight{border-color:var(--yellow);color:var(--yellow)}
.item-info{margin:0;color:var(--muted);font-size:13px;line-height:1.55}
.item-link{display:inline-block;margin-top:8px;color:var(--cyan);font-size:13px;font-weight:800}
.item-link:hover{color:var(--lime)}
.side-panel{
  padding:22px;
  border:2px solid var(--line-strong);
  background:var(--surface-2);
  box-shadow:var(--shadow);
}
.side-panel h2{margin:0 0 14px;font-size:22px}
.side-panel p{margin:0;color:var(--muted);font-size:14px}
.side-list{margin:20px 0 0;padding:0;list-style:none}
.side-list li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}
.side-list strong{color:var(--text)}
.notice{
  margin-top:20px;
  padding:13px 14px;
  border-left:4px solid var(--yellow);
  color:#fce8b2;
  background:#322719;
  font-size:13px;
}
.compare-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.compare-table-wrap{overflow-x:auto;border:1px solid var(--line-strong);box-shadow:var(--shadow-small)}
.compare-table{width:100%;min-width:680px;border-collapse:collapse}
.compare-table th,.compare-table td{padding:15px 17px;border-bottom:1px solid var(--line);text-align:left}
.compare-table th{color:var(--lime);background:var(--surface-2);font-size:14px}
.compare-table td{color:var(--muted)}
.compare-table td:first-child{color:var(--text);font-weight:800}
.compare-table tr:last-child td{border-bottom:0}
.state{color:var(--success);font-weight:800}
.faq-list{max-width:900px;border-top:1px solid var(--line-strong)}
.faq-item{border-bottom:1px solid var(--line-strong)}
.faq-question{
  display:flex;
  width:100%;
  min-height:62px;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 0;
  border:0;
  color:var(--text);
  background:transparent;
  text-align:left;
  font-weight:800;
}
.faq-symbol{color:var(--coral);font-family:Consolas,monospace;font-size:24px}
.faq-answer{display:none;max-width:760px;padding:0 40px 18px 0;color:var(--muted);font-size:15px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-symbol{color:var(--lime)}
.cta-section{padding:72px 0;background:var(--coral);color:var(--bg-deep)}
.cta-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.cta-section h2{margin:8px 0 14px;font-size:36px;line-height:1.25}
.cta-section p{margin:0;max-width:520px}
.cta-section .section-kicker{color:var(--bg-deep)}
.cta-section .section-kicker:before{background:var(--bg-deep);box-shadow:3px 3px 0 var(--lime)}
.access-form{display:grid;gap:14px;padding:24px;border:2px solid var(--bg-deep);background:#e7554e;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13px;font-weight:800}
.field input,.field select,.field textarea{
  width:100%;
  min-height:46px;
  padding:9px 12px;
  border:1px solid var(--bg-deep);
  border-radius:var(--radius-sm);
  color:var(--text);
  outline:0;
  background:var(--bg-deep);
}
.field textarea{min-height:92px;resize:vertical}
.field input:disabled{background:#3b2023;color:var(--subtle)}
.checkline{display:flex;align-items:flex-start;gap:9px;color:#2b1112;font-size:13px;line-height:1.55}
.checkline input{width:18px;height:18px;margin-top:3px;accent-color:var(--lime)}
.form-message{min-height:24px;color:var(--bg-deep);font-size:13px;font-weight:800}
.form-message.error{color:#fff0a8}.form-message.success{color:#e9ffb0}
.access-form .btn{border-color:var(--bg-deep);color:var(--text);background:var(--bg-deep);box-shadow:3px 3px 0 var(--lime)}
.access-form .btn:hover{color:var(--bg-deep);background:var(--lime)}
.site-footer{border-top:2px solid var(--line);background:var(--bg-deep)}
.footer-main{display:grid;grid-template-columns:1.4fr .7fr 1fr;gap:46px;padding:54px 0 42px}
.footer-brand{font-size:20px;font-weight:900}
.footer-copy,.compliance-note{max-width:430px;margin:13px 0 0;color:var(--muted);font-size:13px}
.footer-title{margin-bottom:12px;color:var(--lime);font-size:13px;font-weight:900}
.footer-links{display:grid;gap:8px}
.footer-links a{width:max-content;color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--coral);text-decoration:underline}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  padding:18px 0;
  border-top:1px solid var(--line);
  color:var(--subtle);
  font-size:12px;
}
.footer-status{color:var(--success)}
.empty-state{display:none;padding:32px;border:1px dashed var(--line-strong);color:var(--muted);text-align:center}
@media (max-width:1024px){
  :root{--section-space:62px}
  .index-layout{grid-template-columns:1fr}
  .side-panel{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .side-panel h2,.side-panel p{grid-column:span 2}
  .notice{margin-top:0}
}
@media (max-width:768px){
  .container{width:min(calc(100% - 28px),var(--container))}
  .nav-wrap{min-height:68px}
  .brand{font-size:14px;gap:8px}
  .brand-mark{width:34px;height:34px;font-size:12px}
  .menu-toggle{display:flex}
  .site-nav{
    position:fixed;
    top:68px;
    right:14px;
    left:14px;
    z-index:1001;
    display:none;
    padding:12px;
    border:1px solid var(--line-strong);
    background:var(--bg-deep);
    box-shadow:var(--shadow);
  }
  .site-nav.open{display:block}
  .nav-list{display:grid;gap:5px}
  .nav-link{min-height:48px;padding:10px 13px}
  .nav-overlay{
    position:fixed;
    inset:68px 0 0;
    z-index:1000;
    background:rgba(0,0,0,.6);
  }
  .nav-overlay.show{display:block}
  .page-hero{padding:58px 0 48px}
  .page-hero h1{font-size:38px}
  .hero-summary{font-size:16px}
  .status-strip{display:grid;grid-template-columns:1fr 1fr}
  .status-item{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .status-item:nth-child(2n){border-right:0}
  .status-item:nth-last-child(-n+2){border-bottom:0}
  .filter-panel{grid-template-columns:1fr}
  .section-head{display:block}
  .section-desc{margin-top:12px}
  .cta-layout{grid-template-columns:1fr;gap:28px}
  .footer-main{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .page-hero h1{font-size:32px}
  .hero-tools .btn{width:100%}
  .index-grid{grid-template-columns:1fr}
  .index-item{grid-template-columns:96px 1fr}
  .preview{min-height:112px}
  .side-panel{display:block}
  .side-panel .notice{margin-top:18px}
  .form-row{grid-template-columns:1fr}
  .footer-bottom{display:grid;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}