/* roulang page: index */
:root {
            --bg: #121018;
            --bg-deep: #0d0b12;
            --panel: #1f1b2a;
            --panel-soft: #252034;
            --panel-lift: #2b2539;
            --text: #f7f4ff;
            --muted: #a1a1aa;
            --muted-2: #c9c4d6;
            --line: #363042;
            --line-strong: #4b425c;
            --primary: #d946ef;
            --primary-2: #fb7185;
            --accent: #2dd4bf;
            --warning: #f9a8d4;
            --shadow: 0 22px 70px rgba(0, 0, 0, .38);
            --glow: 0 0 34px rgba(217, 70, 239, .22);
            --radius-lg: 26px;
            --radius-md: 18px;
            --radius-sm: 14px;
            --container: 1220px;
            --ease: 220ms ease-out;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            color: var(--text);
            background:
                radial-gradient(circle at 18% 8%, rgba(217, 70, 239, .16), transparent 34%),
                radial-gradient(circle at 86% 18%, rgba(251, 113, 133, .10), transparent 30%),
                radial-gradient(circle at 50% 92%, rgba(45, 212, 191, .08), transparent 32%),
                linear-gradient(180deg, #15121c 0%, #100e16 48%, #121018 100%);
            line-height: 1.75;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .055;
            background-image:
                linear-gradient(120deg, rgba(255,255,255,.18) 1px, transparent 1px),
                radial-gradient(circle, rgba(255,255,255,.28) 1px, transparent 1.2px);
            background-size: 56px 56px, 22px 22px;
            mask-image: linear-gradient(to bottom, black, transparent 84%);
            z-index: -1;
        }

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

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

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

        button {
            border: 0;
            cursor: pointer;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(18, 16, 24, .78);
            border-bottom: 1px solid rgba(255,255,255,.06);
            transition: background var(--ease), box-shadow var(--ease), border-color var(--ease);
        }

        .site-header.is-scrolled {
            background: rgba(13, 11, 18, .94);
            box-shadow: 0 16px 40px rgba(0,0,0,.28);
            border-color: rgba(217, 70, 239, .16);
        }

        .nav {
            height: 76px;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            gap: 24px;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-left {
            justify-content: flex-start;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-weight: 800;
            letter-spacing: .02em;
            white-space: nowrap;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            box-shadow: var(--glow);
            position: relative;
        }

        .brand-mark::after {
            content: "";
            position: absolute;
            inset: 9px;
            border: 2px solid rgba(255,255,255,.72);
            border-radius: 50%;
            border-left-color: transparent;
        }

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

        .nav-link {
            position: relative;
            padding: 10px 12px;
            color: var(--muted-2);
            font-size: 14px;
            font-weight: 650;
            transition: color var(--ease), background var(--ease);
            border-radius: 999px;
        }

        .nav-link:hover,
        .nav-link:focus-visible {
            color: #fff;
            background: rgba(217, 70, 239, .10);
            outline: none;
        }

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--primary), var(--primary-2));
            box-shadow: var(--glow);
        }

        .nav-cta {
            padding: 10px 16px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            font-weight: 750;
            font-size: 14px;
            box-shadow: 0 12px 30px rgba(217, 70, 239, .20);
            transition: transform var(--ease), filter var(--ease), box-shadow var(--ease);
        }

        .nav-cta:hover,
        .nav-cta:focus-visible {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 16px 38px rgba(217, 70, 239, .32);
            outline: none;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--panel-soft);
            color: #fff;
            border: 1px solid var(--line);
        }

        .menu-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            margin: 4px auto;
            background: currentColor;
            border-radius: 999px;
            transition: transform var(--ease), opacity var(--ease);
        }

        .mobile-panel {
            display: none;
            border-top: 1px solid rgba(255,255,255,.07);
            background: rgba(18, 16, 24, .96);
            padding: 12px 20px 18px;
        }

        .mobile-panel a {
            display: block;
            padding: 13px 12px;
            border-radius: 14px;
            color: var(--muted-2);
            font-weight: 650;
        }

        .mobile-panel a.active,
        .mobile-panel a:hover {
            color: #fff;
            background: rgba(217, 70, 239, .12);
        }

        main {
            overflow: hidden;
        }

        section {
            padding: 82px 0;
        }

        .hero {
            padding-top: 58px;
        }

        .hero-shell {
            position: relative;
            border: 1px solid rgba(217, 70, 239, .18);
            border-radius: 34px;
            background:
                linear-gradient(135deg, rgba(217, 70, 239, .16), rgba(251, 113, 133, .08) 40%, rgba(31, 27, 42, .94) 78%),
                linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
            box-shadow: var(--shadow);
            overflow: hidden;
            padding: 34px;
        }

        .hero-shell::before {
            content: "";
            position: absolute;
            width: 520px;
            height: 520px;
            right: -190px;
            top: -210px;
            background: radial-gradient(circle, rgba(217,70,239,.34), transparent 68%);
            pointer-events: none;
        }

        .hero-topbar {
            position: relative;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 12px 14px;
            border: 1px solid rgba(255,255,255,.08);
            background: rgba(13, 11, 18, .48);
            border-radius: 999px;
            margin-bottom: 30px;
        }

        .group-note {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--muted-2);
            font-size: 14px;
            white-space: nowrap;
        }

        .status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 18px rgba(45,212,191,.55);
        }

        .hero-time {
            color: #fff;
            font-size: 13px;
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(251, 113, 133, .14);
            border: 1px solid rgba(251, 113, 133, .22);
        }

        .hero-content {
            position: relative;
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
            gap: 28px;
            align-items: stretch;
        }

        .hero-copy {
            padding: 16px 4px 6px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 12px;
            border-radius: 999px;
            background: rgba(217, 70, 239, .13);
            color: #f5d5ff;
            border: 1px solid rgba(217, 70, 239, .24);
            font-size: 13px;
            font-weight: 700;
        }

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

        h1 {
            font-size: clamp(32px, 5vw, 52px);
            line-height: 1.12;
            margin: 18px 0 18px;
            letter-spacing: -.04em;
        }

        .hero-desc {
            max-width: 780px;
            color: var(--muted-2);
            font-size: 17px;
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 22px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 12px 20px;
            border-radius: 999px;
            font-weight: 750;
            transition: transform var(--ease), border-color var(--ease), color var(--ease), background var(--ease), box-shadow var(--ease), filter var(--ease);
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            box-shadow: 0 16px 38px rgba(217, 70, 239, .24);
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 20px 48px rgba(217, 70, 239, .34);
            outline: none;
        }

        .btn-secondary {
            color: #fff;
            background: rgba(31, 27, 42, .72);
            border: 1px solid var(--line-strong);
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            transform: translateY(-2px);
            color: #fff;
            border-color: rgba(217, 70, 239, .65);
            background: rgba(217, 70, 239, .10);
            outline: none;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 12px;
            max-width: 720px;
        }

        .stat {
            padding: 14px;
            border: 1px solid rgba(255,255,255,.08);
            border-radius: 18px;
            background: rgba(13, 11, 18, .42);
        }

        .stat strong {
            display: block;
            font-size: 22px;
            line-height: 1.2;
        }

        .stat span {
            display: block;
            color: var(--muted);
            font-size: 13px;
            margin-top: 4px;
        }

        .entry-matrix {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 14px;
        }

        .entry-card {
            min-height: 142px;
            padding: 18px;
            border: 1px solid rgba(255,255,255,.08);
            border-radius: 22px;
            background: rgba(31, 27, 42, .74);
            transition: transform var(--ease), border-color var(--ease), background var(--ease);
            position: relative;
            overflow: hidden;
        }

        .entry-card::after {
            content: "";
            position: absolute;
            width: 90px;
            height: 90px;
            right: -28px;
            bottom: -26px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(217,70,239,.24), transparent 70%);
        }

        .entry-card:hover {
            transform: translateY(-3px);
            border-color: rgba(217, 70, 239, .38);
            background: rgba(37, 32, 52, .92);
        }

        .entry-card.wide {
            grid-column: 1 / -1;
            min-height: 132px;
            background: linear-gradient(135deg, rgba(217,70,239,.18), rgba(31,27,42,.82));
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 10px;
            border-radius: 999px;
            color: #fff;
            background: rgba(251, 113, 133, .15);
            border: 1px solid rgba(251, 113, 133, .25);
            font-size: 12px;
            font-weight: 750;
        }

        .badge.green {
            background: rgba(45, 212, 191, .12);
            border-color: rgba(45, 212, 191, .24);
            color: #d8fffa;
        }

        .badge.purple {
            background: rgba(217, 70, 239, .12);
            border-color: rgba(217, 70, 239, .24);
            color: #f8d7ff;
        }

        .entry-card h3 {
            margin: 12px 0 7px;
            font-size: 19px;
            line-height: 1.35;
        }

        .entry-card p {
            margin: 0;
            color: var(--muted-2);
            font-size: 14px;
            line-height: 1.65;
        }

        .section-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 28px;
        }

        .section-head .copy {
            max-width: 720px;
        }

        h2 {
            font-size: clamp(26px, 3vw, 36px);
            line-height: 1.2;
            margin-bottom: 10px;
            letter-spacing: -.03em;
        }

        .section-head p,
        .section-intro {
            color: var(--muted-2);
            margin-bottom: 0;
            font-size: 16px;
        }

        .comparison-wrap {
            border: 1px solid rgba(255,255,255,.08);
            border-radius: var(--radius-lg);
            background: rgba(31, 27, 42, .62);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .comparison-scroll {
            overflow-x: auto;
        }

        .comparison-table {
            width: 100%;
            min-width: 860px;
            border-collapse: separate;
            border-spacing: 0;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 18px 18px;
            border-bottom: 1px solid rgba(255,255,255,.07);
            text-align: left;
            vertical-align: middle;
            color: var(--muted-2);
        }

        .comparison-table th {
            color: #fff;
            background: rgba(255,255,255,.04);
            font-size: 15px;
        }

        .comparison-table th:first-child,
        .comparison-table td:first-child {
            position: sticky;
            left: 0;
            z-index: 2;
            background: #1f1b2a;
            color: #fff;
            font-weight: 750;
        }

        .comparison-table tbody tr {
            transition: background var(--ease);
        }

        .comparison-table tbody tr:hover {
            background: rgba(217,70,239,.07);
        }

        .comparison-table .recommended {
            position: relative;
            color: #fff;
            background: linear-gradient(180deg, rgba(217,70,239,.16), rgba(251,113,133,.08));
            border-left: 1px solid rgba(217,70,239,.35);
            border-right: 1px solid rgba(217,70,239,.35);
        }

        .check {
            color: var(--accent);
            font-weight: 900;
        }

        .dash {
            color: #777280;
        }

        .level-grid {
            display: grid;
            grid-template-columns: .85fr 1.15fr;
            gap: 22px;
            align-items: stretch;
        }

        .level-rail {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: linear-gradient(180deg, rgba(37,32,52,.92), rgba(22,19,30,.92));
            border: 1px solid rgba(255,255,255,.08);
        }

        .rail-step {
            display: flex;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255,255,255,.07);
        }

        .rail-step:last-child {
            border-bottom: 0;
        }

        .rail-num {
            width: 34px;
            height: 34px;
            flex: 0 0 auto;
            border-radius: 13px;
            display: grid;
            place-items: center;
            color: #fff;
            font-weight: 800;
            background: rgba(217,70,239,.16);
            border: 1px solid rgba(217,70,239,.28);
        }

        .rail-step h3 {
            font-size: 18px;
            margin: 0 0 4px;
        }

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

        .level-cards {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 16px;
        }

        .level-card {
            padding: 22px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,.08);
            background: rgba(31, 27, 42, .76);
            min-height: 310px;
            display: flex;
            flex-direction: column;
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .level-card.featured {
            border-color: rgba(217,70,239,.55);
            background: linear-gradient(180deg, rgba(217,70,239,.17), rgba(31,27,42,.84));
            box-shadow: var(--glow);
        }

        .level-card:hover {
            transform: translateY(-4px);
            border-color: rgba(217,70,239,.38);
        }

        .level-card h3 {
            font-size: 22px;
            margin: 14px 0 8px;
        }

        .level-card p {
            color: var(--muted-2);
            font-size: 14px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin: 8px 0 20px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            height: 30px;
            padding: 0 10px;
            border-radius: 999px;
            background: rgba(255,255,255,.055);
            color: var(--muted-2);
            border: 1px solid rgba(255,255,255,.08);
            font-size: 12px;
            font-weight: 650;
            white-space: nowrap;
        }

        .level-card .btn {
            margin-top: auto;
            width: 100%;
        }

        .preview-layout {
            display: grid;
            grid-template-columns: 230px minmax(0, 1fr);
            gap: 22px;
        }

        .channel-filter {
            position: sticky;
            top: 96px;
            align-self: start;
            padding: 18px;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,.08);
            background: rgba(31,27,42,.70);
        }

        .filter-title {
            color: #fff;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .filter-btn {
            display: flex;
            width: 100%;
            justify-content: space-between;
            align-items: center;
            padding: 11px 12px;
            margin-bottom: 8px;
            border-radius: 14px;
            background: transparent;
            color: var(--muted-2);
            border: 1px solid transparent;
            transition: background var(--ease), border-color var(--ease), color var(--ease);
        }

        .filter-btn:hover,
        .filter-btn.active {
            color: #fff;
            background: rgba(217,70,239,.12);
            border-color: rgba(217,70,239,.24);
        }

        .feed-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 16px;
            align-items: start;
        }

        .feed-card {
            border: 1px solid rgba(255,255,255,.08);
            border-radius: var(--radius-lg);
            background: rgba(31,27,42,.72);
            overflow: hidden;
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .feed-card:hover {
            transform: translateY(-4px);
            border-color: rgba(217,70,239,.38);
            box-shadow: 0 18px 48px rgba(0,0,0,.24);
        }

        .feed-cover {
            height: 158px;
            position: relative;
            background:
                radial-gradient(circle at 30% 20%, rgba(251,113,133,.35), transparent 32%),
                radial-gradient(circle at 72% 60%, rgba(217,70,239,.36), transparent 42%),
                linear-gradient(135deg, #2b2539, #17131f);
        }

        .feed-cover.tall {
            height: 210px;
        }

        .feed-cover::before {
            content: "";
            position: absolute;
            inset: 16px;
            border: 1px solid rgba(255,255,255,.12);
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(255,255,255,.08), transparent);
        }

        .feed-index {
            position: absolute;
            left: 16px;
            bottom: 14px;
            font-size: 34px;
            font-weight: 900;
            color: rgba(255,255,255,.86);
            letter-spacing: -.08em;
        }

        .feed-body {
            padding: 18px;
        }

        .feed-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
            margin-bottom: 11px;
        }

        .feed-card h3 {
            font-size: 18px;
            line-height: 1.38;
            margin-bottom: 8px;
        }

        .feed-card p {
            color: var(--muted-2);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 14px;
        }

        .card-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: var(--muted);
            font-size: 13px;
        }

        .text-link {
            color: #f5d5ff;
            font-weight: 750;
            transition: color var(--ease);
        }

        .text-link:hover,
        .text-link:focus-visible {
            color: #fff;
            outline: none;
        }

        .info-section {
            background: linear-gradient(180deg, rgba(255,255,255,.025), rgba(255,255,255,.00));
        }

        .info-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) 360px;
            gap: 22px;
            align-items: start;
        }

        .news-list {
            border: 1px solid rgba(255,255,255,.08);
            border-radius: var(--radius-lg);
            background: rgba(31,27,42,.68);
            overflow: hidden;
        }

        .news-item {
            display: grid;
            grid-template-columns: 120px minmax(0, 1fr) auto;
            gap: 16px;
            align-items: center;
            padding: 18px 20px;
            border-bottom: 1px solid rgba(255,255,255,.07);
            transition: background var(--ease);
        }

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

        .news-item:hover {
            background: rgba(217,70,239,.07);
        }

        .news-date {
            color: var(--accent);
            font-size: 13px;
            font-weight: 800;
        }

        .news-item h3 {
            margin: 0 0 4px;
            font-size: 17px;
        }

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

        .recommend-panel {
            padding: 22px;
            border-radius: var(--radius-lg);
            background: linear-gradient(180deg, rgba(217,70,239,.16), rgba(31,27,42,.78));
            border: 1px solid rgba(217,70,239,.22);
        }

        .recommend-panel h3 {
            font-size: 22px;
            margin-bottom: 10px;
        }

        .recommend-panel p {
            color: var(--muted-2);
            font-size: 14px;
        }

        .mini-list {
            margin: 18px 0;
            padding: 0;
            list-style: none;
        }

        .mini-list li {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            color: var(--muted-2);
            border-bottom: 1px solid rgba(255,255,255,.07);
            font-size: 14px;
        }

        .mini-list li:last-child {
            border-bottom: 0;
        }

        .mini-list li::before {
            content: "";
            width: 8px;
            height: 8px;
            margin-top: 9px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 14px rgba(45,212,191,.45);
            flex: 0 0 auto;
        }

        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--line);
            background: rgba(31,27,42,.70);
            border-radius: 18px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--ease), background var(--ease);
        }

        .faq-item.active {
            border-color: rgba(217,70,239,.58);
            background: rgba(37,32,52,.88);
        }

        .faq-question {
            width: 100%;
            min-height: 58px;
            padding: 16px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            color: #fff;
            background: transparent;
            text-align: left;
            font-weight: 800;
        }

        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: rgba(217,70,239,.14);
            color: #fff;
            flex: 0 0 auto;
            transition: transform var(--ease), background var(--ease);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 260ms ease-out;
        }

        .faq-answer p {
            padding: 0 18px 18px;
            margin: 0;
            color: var(--muted-2);
            font-size: 15px;
        }

        .cta-section {
            padding-top: 38px;
        }

        .cta-card {
            position: relative;
            overflow: hidden;
            border-radius: 34px;
            padding: 34px;
            background:
                radial-gradient(circle at 76% 18%, rgba(251,113,133,.28), transparent 34%),
                linear-gradient(135deg, rgba(217,70,239,.34), rgba(18,16,24,.96) 58%);
            border: 1px solid rgba(217,70,239,.28);
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            gap: 28px;
            align-items: center;
        }

        .cta-card h2 {
            margin-bottom: 12px;
        }

        .cta-card p {
            color: #eadff0;
            margin-bottom: 0;
            max-width: 720px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .site-footer {
            padding: 42px 0 30px;
            border-top: 1px solid rgba(255,255,255,.08);
            background: rgba(13,11,18,.66);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
            gap: 28px;
            align-items: start;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 850;
            margin-bottom: 12px;
        }

        .footer-text {
            color: var(--muted);
            max-width: 620px;
            font-size: 14px;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 10px 18px;
        }

        .footer-links a {
            color: var(--muted-2);
            font-size: 14px;
            transition: color var(--ease);
        }

        .footer-links a:hover {
            color: #fff;
        }

        .copyright {
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,.07);
            color: #7f798c;
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
        }

        @media (max-width: 1060px) {
            .nav-left, .nav-right {
                gap: 4px;
            }

            .nav-link {
                padding-inline: 9px;
            }

            .hero-content,
            .level-grid,
            .preview-layout,
            .info-layout {
                grid-template-columns: 1fr;
            }

            .channel-filter {
                position: static;
                display: flex;
                overflow-x: auto;
                gap: 8px;
            }

            .channel-filter .filter-title {
                display: none;
            }

            .filter-btn {
                width: auto;
                white-space: nowrap;
                margin: 0;
            }

            .feed-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

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

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

            .cta-actions {
                justify-content: flex-start;
            }
        }

        @media (max-width: 820px) {
            .nav {
                height: 68px;
                grid-template-columns: auto 1fr auto;
            }

            .brand {
                justify-self: center;
                grid-column: 2;
            }

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

            .nav-left,
            .nav-right {
                display: none;
            }

            .menu-toggle {
                display: inline-block;
                grid-column: 3;
            }

            .mobile-panel.open {
                display: block;
            }

            .hero-shell {
                padding: 22px;
                border-radius: 26px;
            }

            .hero-topbar {
                align-items: flex-start;
                border-radius: 20px;
                flex-direction: column;
            }

            .hero-stats,
            .entry-matrix {
                grid-template-columns: 1fr;
            }

            section {
                padding: 56px 0;
            }

            .section-head {
                display: block;
            }

            .news-item {
                grid-template-columns: 1fr;
                gap: 6px;
            }

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

            .footer-links {
                justify-content: flex-start;
            }
        }

        @media (max-width: 560px) {
            .container {
                width: min(100% - 28px, var(--container));
            }

            h1 {
                font-size: 31px;
            }

            h2 {
                font-size: 25px;
            }

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

            .btn {
                width: 100%;
            }

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

            .comparison-wrap {
                border-radius: 20px;
            }

            .comparison-table {
                min-width: 760px;
            }

            .cta-card {
                padding: 24px;
                border-radius: 24px;
            }
        }

/* roulang page: category1 */
:root {
      --bg: #121018;
      --bg-2: #15121c;
      --surface: #1f1b2a;
      --surface-2: #272235;
      --surface-3: #302941;
      --text: #f7f2ff;
      --muted: #a1a1aa;
      --muted-2: #d4d4d8;
      --line: #3f3a4d;
      --line-soft: rgba(255,255,255,.08);
      --primary: #d946ef;
      --primary-2: #a855f7;
      --coral: #fb7185;
      --teal: #2dd4bf;
      --warning: #fbbf24;
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 14px;
      --shadow: 0 22px 70px rgba(0,0,0,.36);
      --shadow-soft: 0 14px 42px rgba(0,0,0,.24);
      --glow: 0 0 0 1px rgba(217,70,239,.28), 0 18px 55px rgba(217,70,239,.18);
      --container: 1200px;
      --ease: 220ms ease-out;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      min-height: 100vh;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(217,70,239,.16), transparent 32%),
        radial-gradient(circle at 88% 18%, rgba(251,113,133,.10), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,.035) 0 1px, transparent 1px 16px),
        var(--bg);
      font-family: PingFang SC, Microsoft YaHei, Noto Sans SC, Arial, sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .055;
      background-image:
        radial-gradient(circle, rgba(255,255,255,.7) 0 1px, transparent 1px);
      background-size: 18px 18px;
      z-index: -1;
    }

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

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

    button {
      border: 0;
      cursor: pointer;
    }

    .container {
      width: min(calc(100% - 40px), var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid rgba(255,255,255,.06);
      background: rgba(18,16,24,.78);
      backdrop-filter: blur(14px);
      transition: background var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .site-header.is-scrolled {
      background: rgba(18,16,24,.96);
      border-color: rgba(217,70,239,.18);
      box-shadow: 0 12px 35px rgba(0,0,0,.32);
    }

    .nav {
      position: relative;
      min-height: 76px;
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 24px;
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .nav-left {
      justify-content: flex-start;
    }

    .nav-right {
      justify-content: flex-end;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-width: 260px;
      font-weight: 800;
      letter-spacing: .02em;
      white-space: nowrap;
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      flex: 0 0 auto;
      border-radius: 11px;
      background:
        radial-gradient(circle at 28% 28%, #fff 0 10%, transparent 11%),
        linear-gradient(135deg, var(--primary), var(--coral));
      box-shadow: 0 0 28px rgba(217,70,239,.42);
      position: relative;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 8px;
      border: 1px solid rgba(255,255,255,.55);
      border-radius: 7px;
    }

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

    .nav-link,
    .mobile-panel a {
      position: relative;
      color: var(--muted-2);
      font-size: 14px;
      font-weight: 650;
      transition: color var(--ease);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 50%;
      right: 50%;
      bottom: -10px;
      height: 2px;
      border-radius: 99px;
      background: linear-gradient(90deg, var(--primary), var(--coral));
      transition: left var(--ease), right var(--ease), opacity var(--ease);
      opacity: 0;
    }

    .nav-link:hover,
    .nav-link.active {
      color: #fff;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      left: 18%;
      right: 18%;
      opacity: 1;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 18px;
      border-radius: 999px;
      color: #fff;
      font-size: 14px;
      font-weight: 750;
      background: linear-gradient(135deg, var(--primary), var(--coral));
      box-shadow: 0 12px 32px rgba(217,70,239,.25);
      transition: transform var(--ease), box-shadow var(--ease), filter var(--ease);
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      filter: brightness(1.08);
      box-shadow: 0 18px 45px rgba(217,70,239,.36);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: var(--surface);
      border: 1px solid var(--line);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      transition: border-color var(--ease), background var(--ease);
    }

    .menu-toggle span {
      width: 18px;
      height: 2px;
      border-radius: 99px;
      background: var(--text);
      transition: transform var(--ease), opacity var(--ease);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .mobile-panel {
      display: none;
      border-top: 1px solid var(--line-soft);
      padding: 10px 20px 18px;
      background: rgba(18,16,24,.98);
    }

    .mobile-panel a {
      display: block;
      padding: 13px 14px;
      border-radius: 14px;
    }

    .mobile-panel a:hover,
    .mobile-panel a.active {
      color: #fff;
      background: rgba(217,70,239,.12);
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 78px 0;
      position: relative;
    }

    .section-tight {
      padding: 56px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #fff;
      font-size: 13px;
      font-weight: 750;
      letter-spacing: .02em;
      padding: 8px 12px;
      border: 1px solid rgba(217,70,239,.36);
      border-radius: 999px;
      background: rgba(217,70,239,.10);
    }

    .dot {
      width: 8px;
      height: 8px;
      border-radius: 99px;
      background: var(--teal);
      box-shadow: 0 0 16px rgba(45,212,191,.55);
    }

    .hero-channel {
      padding: 64px 0 42px;
      background:
        linear-gradient(180deg, rgba(217,70,239,.08), transparent 72%),
        radial-gradient(circle at 52% 4%, rgba(251,113,133,.15), transparent 34%);
    }

    .channel-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) 420px;
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy {
      min-height: 438px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 34px;
      border: 1px solid var(--line-soft);
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(31,27,42,.96), rgba(21,18,28,.92)),
        radial-gradient(circle at 12% 18%, rgba(217,70,239,.16), transparent 34%);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -120px;
      bottom: -130px;
      width: 330px;
      height: 330px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.08);
      background: radial-gradient(circle, rgba(217,70,239,.22), transparent 62%);
      pointer-events: none;
    }

    .hero-copy h1 {
      position: relative;
      z-index: 1;
      max-width: 780px;
      margin-top: 18px;
      font-size: clamp(30px, 4.2vw, 48px);
      line-height: 1.15;
      font-weight: 850;
      letter-spacing: -.035em;
    }

    .hero-copy .lead {
      position: relative;
      z-index: 1;
      max-width: 720px;
      margin-top: 18px;
      color: var(--muted-2);
      font-size: 17px;
    }

    .pain-line {
      position: relative;
      z-index: 1;
      margin-top: 18px;
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 10px;
      padding: 10px 13px;
      border-radius: 999px;
      color: #ffe8ef;
      background: rgba(251,113,133,.12);
      border: 1px solid rgba(251,113,133,.25);
      font-size: 14px;
    }

    .hero-actions {
      position: relative;
      z-index: 1;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      font-weight: 780;
      font-size: 14px;
      transition: transform var(--ease), border-color var(--ease), background var(--ease), box-shadow var(--ease), color var(--ease), filter var(--ease);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--coral));
      box-shadow: 0 16px 42px rgba(217,70,239,.28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      filter: brightness(1.08);
      box-shadow: 0 20px 54px rgba(217,70,239,.38);
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255,255,255,.035);
      border: 1px solid var(--line);
    }

    .btn-secondary:hover {
      transform: translateY(-2px);
      color: #fff;
      border-color: rgba(217,70,239,.65);
      background: rgba(217,70,239,.10);
    }

    .btn-small {
      min-height: 38px;
      padding: 0 15px;
      font-size: 13px;
    }

    .quick-form {
      padding: 24px;
      border-radius: 28px;
      background:
        linear-gradient(180deg, rgba(39,34,53,.96), rgba(31,27,42,.96));
      border: 1px solid rgba(217,70,239,.22);
      box-shadow: var(--shadow-soft);
      position: relative;
      overflow: hidden;
    }

    .quick-form::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(135deg, rgba(217,70,239,.12), transparent 42%),
        radial-gradient(circle at 90% 8%, rgba(45,212,191,.16), transparent 30%);
      pointer-events: none;
    }

    .quick-form > * {
      position: relative;
      z-index: 1;
    }

    .form-title {
      font-size: 22px;
      line-height: 1.3;
      font-weight: 820;
      margin-bottom: 8px;
    }

    .form-desc {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 18px;
    }

    .field {
      margin-bottom: 14px;
    }

    .field label {
      display: block;
      margin-bottom: 7px;
      color: var(--muted-2);
      font-size: 13px;
      font-weight: 700;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      color: #fff;
      border: 1px solid var(--line);
      border-radius: 15px;
      background: rgba(18,16,24,.72);
      padding: 12px 13px;
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
    }

    .field textarea {
      min-height: 84px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(217,70,239,.75);
      box-shadow: 0 0 0 4px rgba(217,70,239,.13);
      background: rgba(18,16,24,.92);
    }

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

    .form-message {
      display: none;
      margin-top: 12px;
      padding: 10px 12px;
      border-radius: 14px;
      color: #d9fff9;
      border: 1px solid rgba(45,212,191,.28);
      background: rgba(45,212,191,.09);
      font-size: 13px;
    }

    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .meta-pill,
    .tag,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 720;
      white-space: nowrap;
    }

    .meta-pill {
      padding: 8px 11px;
      color: var(--muted-2);
      background: rgba(255,255,255,.045);
      border: 1px solid var(--line-soft);
    }

    .tag {
      padding: 9px 14px;
      color: var(--muted-2);
      background: rgba(255,255,255,.035);
      border: 1px solid var(--line);
      transition: background var(--ease), border-color var(--ease), color var(--ease), transform var(--ease);
    }

    .tag:hover,
    .tag.active {
      color: #fff;
      border-color: rgba(217,70,239,.62);
      background: linear-gradient(135deg, rgba(217,70,239,.75), rgba(251,113,133,.58));
      transform: translateY(-1px);
    }

    .badge {
      padding: 6px 10px;
      color: #fff;
      background: rgba(217,70,239,.16);
      border: 1px solid rgba(217,70,239,.28);
    }

    .badge.coral {
      background: rgba(251,113,133,.14);
      border-color: rgba(251,113,133,.30);
    }

    .badge.teal {
      color: #d9fff9;
      background: rgba(45,212,191,.10);
      border-color: rgba(45,212,191,.24);
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, .92fr) minmax(240px, .45fr);
      gap: 28px;
      align-items: end;
      margin-bottom: 28px;
    }

    .section-head h2 {
      font-size: clamp(25px, 3vw, 34px);
      line-height: 1.22;
      font-weight: 850;
      letter-spacing: -.025em;
    }

    .section-head p {
      color: var(--muted);
      font-size: 15px;
    }

    .filter-bar {
      position: sticky;
      top: 77px;
      z-index: 10;
      padding: 14px;
      margin-bottom: 28px;
      border: 1px solid var(--line-soft);
      border-radius: 24px;
      background: rgba(18,16,24,.86);
      backdrop-filter: blur(12px);
      box-shadow: 0 12px 36px rgba(0,0,0,.18);
    }

    .tag-scroll {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      scrollbar-width: none;
      padding-bottom: 1px;
    }

    .tag-scroll::-webkit-scrollbar {
      display: none;
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      gap: 24px;
      align-items: start;
    }

    .feed-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .feed-card {
      min-height: 100%;
      border: 1px solid var(--line-soft);
      border-radius: 24px;
      background: linear-gradient(180deg, rgba(31,27,42,.96), rgba(21,18,28,.96));
      overflow: hidden;
      box-shadow: 0 14px 36px rgba(0,0,0,.22);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .feed-card:hover {
      transform: translateY(-4px);
      border-color: rgba(217,70,239,.45);
      box-shadow: var(--glow);
    }

    .cover {
      height: 150px;
      position: relative;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(217,70,239,.75), rgba(251,113,133,.48)),
        radial-gradient(circle at 78% 20%, rgba(45,212,191,.45), transparent 28%);
    }

    .feed-card:nth-child(2n) .cover {
      background:
        linear-gradient(135deg, rgba(168,85,247,.72), rgba(45,212,191,.32)),
        radial-gradient(circle at 22% 20%, rgba(251,113,133,.38), transparent 28%);
    }

    .feed-card:nth-child(3n) .cover {
      height: 190px;
      background:
        linear-gradient(145deg, rgba(251,113,133,.64), rgba(31,27,42,.48)),
        radial-gradient(circle at 70% 22%, rgba(217,70,239,.42), transparent 34%);
    }

    .cover::before {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 18px;
      background:
        linear-gradient(90deg, rgba(255,255,255,.14) 0 1px, transparent 1px 18px),
        linear-gradient(0deg, rgba(255,255,255,.10) 0 1px, transparent 1px 18px);
      opacity: .58;
    }

    .cover-code {
      position: absolute;
      left: 18px;
      bottom: 16px;
      color: rgba(255,255,255,.90);
      font-size: 28px;
      font-weight: 900;
      letter-spacing: -.05em;
    }

    .cover-state {
      position: absolute;
      right: 14px;
      top: 14px;
      padding: 6px 10px;
      border-radius: 999px;
      color: #071b18;
      background: var(--teal);
      font-size: 12px;
      font-weight: 850;
    }

    .feed-body {
      padding: 18px;
    }

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

    .feed-card h3 {
      font-size: 20px;
      line-height: 1.35;
      font-weight: 820;
      margin-bottom: 9px;
      letter-spacing: -.015em;
    }

    .feed-card p {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 15px;
    }

    .card-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding-top: 13px;
      border-top: 1px solid var(--line-soft);
      color: var(--muted);
      font-size: 12px;
    }

    .side-panel {
      position: sticky;
      top: 158px;
      display: grid;
      gap: 16px;
    }

    .side-card {
      padding: 20px;
      border-radius: 24px;
      border: 1px solid var(--line-soft);
      background:
        linear-gradient(180deg, rgba(39,34,53,.96), rgba(31,27,42,.94));
      box-shadow: var(--shadow-soft);
    }

    .side-card h3 {
      font-size: 19px;
      font-weight: 820;
      margin-bottom: 10px;
    }

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

    .mini-list {
      display: grid;
      gap: 10px;
      list-style: none;
    }

    .mini-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--muted-2);
      font-size: 14px;
      padding: 10px;
      border-radius: 14px;
      background: rgba(255,255,255,.035);
      border: 1px solid rgba(255,255,255,.055);
    }

    .mini-list li::before {
      content: "";
      width: 8px;
      height: 8px;
      margin-top: 8px;
      border-radius: 99px;
      background: var(--teal);
      box-shadow: 0 0 12px rgba(45,212,191,.45);
      flex: 0 0 auto;
    }

    .benefit-strip {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      padding: 28px;
      border-radius: 28px;
      border: 1px solid rgba(217,70,239,.28);
      background:
        linear-gradient(135deg, rgba(217,70,239,.18), rgba(251,113,133,.08) 48%, rgba(31,27,42,.96)),
        var(--surface);
      box-shadow: var(--shadow-soft);
    }

    .benefit-strip h2 {
      font-size: clamp(24px, 3vw, 32px);
      line-height: 1.25;
      font-weight: 850;
      margin-bottom: 8px;
    }

    .benefit-strip p {
      color: var(--muted-2);
      max-width: 730px;
    }

    .explain-grid {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 24px;
      align-items: start;
    }

    .rule-card {
      padding: 24px;
      border-radius: 24px;
      background: rgba(31,27,42,.92);
      border: 1px solid var(--line-soft);
      box-shadow: var(--shadow-soft);
    }

    .rule-card h2 {
      font-size: 27px;
      line-height: 1.25;
      font-weight: 850;
      margin-bottom: 12px;
    }

    .rule-card p {
      color: var(--muted);
      margin-bottom: 18px;
    }

    .rule-steps {
      counter-reset: steps;
      display: grid;
      gap: 12px;
      list-style: none;
    }

    .rule-steps li {
      counter-increment: steps;
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 12px;
      align-items: start;
      padding: 14px;
      border-radius: 16px;
      border: 1px solid var(--line-soft);
      background: rgba(255,255,255,.035);
      color: var(--muted-2);
      font-size: 14px;
    }

    .rule-steps li::before {
      content: counter(steps);
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      color: #fff;
      font-weight: 850;
      background: linear-gradient(135deg, var(--primary), var(--coral));
    }

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

    .faq-item {
      border: 1px solid #34303f;
      border-radius: 20px;
      background: rgba(31,27,42,.92);
      overflow: hidden;
      transition: border-color var(--ease), background var(--ease);
    }

    .faq-item.active {
      border-color: rgba(217,70,239,.62);
      background: rgba(39,34,53,.96);
    }

    .faq-question {
      width: 100%;
      min-height: 56px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 17px 20px;
      color: var(--text);
      background: transparent;
      text-align: left;
      font-weight: 780;
    }

    .faq-icon {
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: rgba(217,70,239,.16);
      transition: transform var(--ease), background var(--ease);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: rgba(217,70,239,.36);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--ease);
    }

    .faq-answer p {
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .open-cta {
      position: relative;
      padding: 34px;
      border-radius: 32px;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(circle at 82% 20%, rgba(45,212,191,.18), transparent 28%),
        linear-gradient(135deg, rgba(217,70,239,.34), rgba(251,113,133,.18) 46%, rgba(31,27,42,.96));
      box-shadow: var(--shadow);
    }

    .open-cta::after {
      content: "";
      position: absolute;
      inset: 18px;
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 24px;
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
    }

    .open-cta h2 {
      font-size: clamp(25px, 3.2vw, 36px);
      line-height: 1.22;
      font-weight: 850;
      margin-bottom: 9px;
    }

    .open-cta p {
      color: var(--muted-2);
      max-width: 760px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .site-footer {
      border-top: 1px solid var(--line-soft);
      padding: 42px 0 28px;
      background: rgba(11,10,16,.72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 28px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 850;
      margin-bottom: 12px;
    }

    .footer-text {
      max-width: 640px;
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 12px 18px;
      max-width: 360px;
    }

    .footer-links a {
      color: var(--muted-2);
      font-size: 14px;
      transition: color var(--ease);
    }

    .footer-links a:hover {
      color: #fff;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 28px;
      padding-top: 18px;
      border-top: 1px solid var(--line-soft);
      color: var(--muted);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(calc(100% - 32px), var(--container));
      }

      .nav {
        grid-template-columns: auto 1fr auto;
      }

      .brand {
        justify-content: flex-start;
        min-width: 0;
      }

      .nav-left,
      .nav-right {
        display: none;
      }

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

      .mobile-panel.is-open {
        display: grid;
        gap: 4px;
      }

      .channel-grid,
      .content-layout,
      .explain-grid {
        grid-template-columns: 1fr;
      }

      .hero-copy {
        min-height: auto;
      }

      .side-panel {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .filter-bar {
        top: 76px;
      }

      .section-head {
        grid-template-columns: 1fr;
        gap: 12px;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 56px 0;
      }

      .section-tight {
        padding: 42px 0;
      }

      .hero-channel {
        padding: 38px 0 28px;
      }

      .hero-copy,
      .quick-form,
      .open-cta {
        border-radius: 24px;
        padding: 22px;
      }

      .feed-grid,
      .side-panel {
        grid-template-columns: 1fr;
      }

      .benefit-strip,
      .cta-inner,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .benefit-strip {
        padding: 22px;
      }

      .cta-actions,
      .footer-links {
        justify-content: flex-start;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(calc(100% - 24px), var(--container));
      }

      .nav {
        min-height: 66px;
      }

      .brand-text {
        font-size: 15px;
        max-width: 210px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .brand-mark {
        width: 28px;
        height: 28px;
        border-radius: 10px;
      }

      .hero-copy h1 {
        font-size: 29px;
      }

      .lead {
        font-size: 15px;
      }

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

      .btn,
      .nav-cta {
        width: 100%;
      }

      .meta-row {
        gap: 8px;
      }

      .cover {
        height: 135px;
      }

      .feed-card:nth-child(3n) .cover {
        height: 155px;
      }

      .filter-bar {
        margin-left: -4px;
        margin-right: -4px;
        border-radius: 18px;
      }
    }

/* roulang page: category2 */
:root{
      --bg:#121018;
      --bg-2:#15121C;
      --surface:#1F1B2A;
      --surface-2:#272235;
      --surface-3:#181522;
      --text:#F4F4F5;
      --muted:#A1A1AA;
      --soft:#D4D4D8;
      --line:#34303F;
      --line-2:#443E55;
      --primary:#D946EF;
      --primary-2:#A855F7;
      --coral:#FB7185;
      --teal:#2DD4BF;
      --warning:#F9A8D4;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --shadow:0 18px 60px rgba(0,0,0,.32);
      --shadow-soft:0 10px 34px rgba(217,70,239,.13);
      --container:1200px;
      --ease:180ms ease-out;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 8%, rgba(217,70,239,.18), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(251,113,133,.12), transparent 28%),
        radial-gradient(circle at 50% 95%, rgba(45,212,191,.08), transparent 34%),
        linear-gradient(180deg,var(--bg),#0E0C13 62%,#100E16);
      line-height:1.75;
      min-height:100vh;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.055;
      background-image:
        linear-gradient(135deg, rgba(255,255,255,.18) 1px, transparent 1px),
        radial-gradient(circle, rgba(255,255,255,.25) 1px, transparent 1px);
      background-size:52px 52px, 18px 18px;
      mask-image:linear-gradient(to bottom, black, transparent 82%);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{border:0;cursor:pointer}
    img{max-width:100%;display:block}
    .container{
      width:min(calc(100% - 40px),var(--container));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(18,16,24,.78);
      border-bottom:1px solid rgba(68,62,85,.58);
      backdrop-filter:blur(14px);
      transition:background var(--ease), box-shadow var(--ease), border-color var(--ease);
    }
    .site-header.is-scrolled{
      background:rgba(18,16,24,.94);
      box-shadow:0 14px 42px rgba(0,0,0,.28);
      border-color:rgba(217,70,239,.18);
    }
    .nav{
      min-height:76px;
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:18px;
      position:relative;
    }
    .nav-left,.nav-right{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .nav-right{justify-content:flex-end}
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:0 13px;
      color:var(--soft);
      font-size:14px;
      border-radius:999px;
      transition:color var(--ease), background var(--ease);
      white-space:nowrap;
    }
    .nav-link:hover{color:#fff;background:rgba(217,70,239,.08)}
    .nav-link.active{color:#fff;background:rgba(217,70,239,.12)}
    .nav-link.active:after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:4px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--coral));
      box-shadow:0 0 16px rgba(217,70,239,.55);
    }
    .brand{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-width:280px;
      padding:10px 18px;
      border:1px solid rgba(217,70,239,.24);
      border-radius:999px;
      background:linear-gradient(180deg, rgba(31,27,42,.92), rgba(21,18,28,.82));
      box-shadow:0 10px 34px rgba(217,70,239,.12);
    }
    .brand-mark{
      width:22px;
      height:22px;
      border-radius:9px;
      display:inline-block;
      background:
        radial-gradient(circle at 70% 28%, #fff 0 8%, transparent 9%),
        linear-gradient(135deg,var(--primary),var(--coral));
      box-shadow:0 0 18px rgba(217,70,239,.56);
      flex:0 0 auto;
    }
    .brand-text{font-weight:800;letter-spacing:.02em;font-size:16px}
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 18px;
      border-radius:999px;
      color:#fff;
      font-size:14px;
      font-weight:700;
      background:linear-gradient(135deg,var(--primary),var(--coral));
      box-shadow:0 10px 28px rgba(217,70,239,.24);
      transition:transform var(--ease), box-shadow var(--ease), filter var(--ease);
      white-space:nowrap;
    }
    .nav-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 42px rgba(217,70,239,.36)}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:rgba(31,27,42,.92);
      border:1px solid var(--line);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
    }
    .menu-toggle span{
      width:18px;
      height:2px;
      border-radius:99px;
      background:#fff;
      transition:transform var(--ease), opacity var(--ease);
    }
    .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
    .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .mobile-panel{
      display:none;
      border-top:1px solid rgba(68,62,85,.62);
      padding:10px 20px 18px;
      background:rgba(18,16,24,.98);
    }
    .mobile-panel a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      min-height:48px;
      color:var(--soft);
      border-bottom:1px solid rgba(68,62,85,.35);
      font-weight:650;
    }
    .mobile-panel a.active{color:#fff}
    .mobile-panel a.active:after{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 14px rgba(217,70,239,.68);
    }
    main{position:relative}
    .section{padding:82px 0}
    .section-tight{padding:58px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      font-size:13px;
      font-weight:750;
      letter-spacing:.04em;
      padding:7px 12px;
      border:1px solid rgba(217,70,239,.28);
      border-radius:999px;
      background:rgba(217,70,239,.1);
      margin-bottom:18px;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--teal);
      box-shadow:0 0 12px rgba(45,212,191,.68);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(30px,4.2vw,48px);
      line-height:1.15;
      letter-spacing:-.03em;
      margin-bottom:18px;
      font-weight:850;
    }
    h2{
      font-size:clamp(24px,3vw,34px);
      line-height:1.25;
      letter-spacing:-.02em;
      margin-bottom:12px;
      font-weight:820;
    }
    h3{
      font-size:20px;
      line-height:1.4;
      margin-bottom:8px;
      font-weight:760;
    }
    .lead{
      color:var(--soft);
      font-size:17px;
      max-width:760px;
      margin-bottom:0;
    }
    .muted{color:var(--muted)}
    .hero{
      padding:66px 0 40px;
    }
    .hero-shell{
      display:grid;
      grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);
      gap:24px;
      align-items:stretch;
    }
    .hero-copy{
      position:relative;
      min-height:420px;
      overflow:hidden;
      padding:34px;
      border-radius:var(--radius-xl);
      border:1px solid rgba(217,70,239,.20);
      background:
        linear-gradient(145deg, rgba(31,27,42,.94), rgba(21,18,28,.94)),
        radial-gradient(circle at 20% 20%, rgba(217,70,239,.28), transparent 34%);
      box-shadow:var(--shadow);
    }
    .hero-copy:after{
      content:"";
      position:absolute;
      inset:auto -90px -120px auto;
      width:280px;
      height:280px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(251,113,133,.26), transparent 64%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      color:var(--muted);
      font-size:13px;
      margin-bottom:18px;
    }
    .breadcrumb a:hover{color:var(--primary)}
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:999px;
      font-weight:760;
      transition:transform var(--ease), box-shadow var(--ease), border-color var(--ease), color var(--ease), background var(--ease), filter var(--ease);
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--coral));
      box-shadow:0 12px 34px rgba(217,70,239,.28);
    }
    .btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 18px 48px rgba(217,70,239,.38)}
    .btn-secondary{
      color:#fff;
      border:1px solid var(--line-2);
      background:rgba(31,27,42,.68);
    }
    .btn-secondary:hover{color:#fff;border-color:rgba(217,70,239,.72);background:rgba(217,70,239,.1);transform:translateY(-2px)}
    .btn:focus-visible,.nav-link:focus-visible,.nav-cta:focus-visible,.menu-toggle:focus-visible,.faq-question:focus-visible{
      outline:3px solid rgba(217,70,239,.42);
      outline-offset:3px;
    }
    .hero-note{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:28px;
    }
    .mini-note{
      padding:14px;
      border-radius:18px;
      background:rgba(18,16,24,.5);
      border:1px solid rgba(68,62,85,.62);
    }
    .mini-note strong{display:block;font-size:18px;line-height:1.2}
    .mini-note span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .summary-panel{
      display:grid;
      gap:14px;
    }
    .summary-card{
      padding:22px;
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg, rgba(31,27,42,.96), rgba(24,21,34,.96));
      border:1px solid var(--line);
      box-shadow:0 12px 40px rgba(0,0,0,.22);
      transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .summary-card:hover{
      transform:translateY(-3px);
      border-color:rgba(217,70,239,.46);
      box-shadow:var(--shadow-soft);
    }
    .summary-card.recommend{
      border-color:rgba(217,70,239,.55);
      background:
        linear-gradient(180deg, rgba(66,37,75,.66), rgba(31,27,42,.98));
    }
    .summary-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:10px;
    }
    .summary-num{
      font-size:28px;
      line-height:1;
      font-weight:860;
      letter-spacing:-.03em;
      color:#fff;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:5px 10px;
      font-size:12px;
      line-height:1;
      font-weight:760;
      white-space:nowrap;
    }
    .badge-pink{background:rgba(217,70,239,.16);color:#F5D0FE;border:1px solid rgba(217,70,239,.26)}
    .badge-coral{background:rgba(251,113,133,.14);color:#FFE4E6;border:1px solid rgba(251,113,133,.28)}
    .badge-teal{background:rgba(45,212,191,.12);color:#CCFBF1;border:1px solid rgba(45,212,191,.25)}
    .tag{
      color:var(--soft);
      background:rgba(31,27,42,.72);
      border:1px solid var(--line);
      cursor:pointer;
      transition:background var(--ease), color var(--ease), border-color var(--ease);
    }
    .tag:hover,.tag.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(217,70,239,.92), rgba(251,113,133,.82));
      border-color:transparent;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:28px;
    }
    .section-head p{max-width:650px;color:var(--muted);margin:0}
    .filter-bar{
      display:flex;
      gap:10px;
      overflow-x:auto;
      padding:6px 0 16px;
      scrollbar-width:none;
      margin-bottom:14px;
    }
    .filter-bar::-webkit-scrollbar{display:none}
    .rules-layout{
      display:grid;
      grid-template-columns:260px minmax(0,1fr);
      gap:22px;
      align-items:start;
    }
    .group-nav{
      position:sticky;
      top:96px;
      padding:14px;
      border-radius:var(--radius-lg);
      background:rgba(31,27,42,.78);
      border:1px solid var(--line);
    }
    .group-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      min-height:44px;
      padding:0 12px;
      border-radius:14px;
      color:var(--soft);
      transition:background var(--ease), color var(--ease);
    }
    .group-nav a:hover,.group-nav a.active{background:rgba(217,70,239,.12);color:#fff}
    .group-nav a span:last-child{color:var(--muted);font-size:12px}
    .rule-group{
      margin-bottom:18px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(31,27,42,.72);
      overflow:hidden;
    }
    .group-title{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:20px 22px;
      background:linear-gradient(90deg, rgba(217,70,239,.12), rgba(251,113,133,.05), transparent);
      border-bottom:1px solid rgba(68,62,85,.58);
    }
    .group-title p{margin:3px 0 0;color:var(--muted);font-size:14px}
    .rule-list{padding:10px}
    .rule-item{
      display:grid;
      grid-template-columns:1fr auto;
      gap:16px;
      padding:16px;
      border-radius:18px;
      border:1px solid transparent;
      transition:background var(--ease), border-color var(--ease), transform var(--ease);
    }
    .rule-item:hover{
      background:rgba(217,70,239,.07);
      border-color:rgba(217,70,239,.24);
      transform:translateY(-2px);
    }
    .rule-item + .rule-item{margin-top:6px}
    .rule-title-row{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:5px;
    }
    .rule-item h3{font-size:18px;margin:0}
    .rule-item p{color:var(--muted);margin:0;font-size:14px}
    .rule-meta{
      display:flex;
      flex-direction:column;
      align-items:flex-end;
      justify-content:center;
      gap:8px;
      min-width:128px;
      color:var(--muted);
      font-size:13px;
      text-align:right;
    }
    .status-dot{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:#CCFBF1;
      font-weight:700;
    }
    .status-dot:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--teal);
      box-shadow:0 0 12px rgba(45,212,191,.7);
    }
    .notice-grid{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:22px;
      align-items:stretch;
    }
    .notice-card{
      position:relative;
      padding:26px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(31,27,42,.94), rgba(18,16,24,.88));
      overflow:hidden;
    }
    .notice-card:before{
      content:"";
      position:absolute;
      left:0;
      top:22px;
      bottom:22px;
      width:4px;
      border-radius:0 999px 999px 0;
      background:linear-gradient(180deg,var(--primary),var(--coral));
    }
    .notice-card.highlight{
      border-color:rgba(217,70,239,.42);
      background:
        radial-gradient(circle at 86% 20%, rgba(217,70,239,.18), transparent 32%),
        linear-gradient(180deg, rgba(40,30,51,.96), rgba(18,16,24,.9));
    }
    .check-list{
      display:grid;
      gap:12px;
      margin:18px 0 0;
      padding:0;
      list-style:none;
    }
    .check-list li{
      display:flex;
      gap:10px;
      color:var(--soft);
      font-size:15px;
    }
    .check-list li:before{
      content:"";
      width:18px;
      height:18px;
      margin-top:5px;
      border-radius:50%;
      flex:0 0 auto;
      background:
        radial-gradient(circle at center, #fff 0 16%, transparent 17%),
        linear-gradient(135deg,var(--teal),var(--primary));
    }
    .preview-wrap{
      overflow:hidden;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:rgba(31,27,42,.48);
      padding:18px;
    }
    .preview-track{
      display:grid;
      grid-auto-flow:column;
      grid-auto-columns:minmax(245px,1fr);
      gap:16px;
      overflow-x:auto;
      padding-bottom:10px;
      scroll-snap-type:x mandatory;
      scrollbar-color:rgba(217,70,239,.45) transparent;
    }
    .preview-card{
      scroll-snap-align:start;
      min-height:310px;
      display:flex;
      flex-direction:column;
      border-radius:22px;
      border:1px solid rgba(68,62,85,.78);
      background:linear-gradient(180deg, rgba(24,21,34,.94), rgba(18,16,24,.96));
      overflow:hidden;
      transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .preview-card:hover{
      transform:translateY(-4px);
      border-color:rgba(217,70,239,.46);
      box-shadow:var(--shadow-soft);
    }
    .abstract-cover{
      height:132px;
      position:relative;
      background:
        radial-gradient(circle at 28% 26%, rgba(251,113,133,.75), transparent 28%),
        radial-gradient(circle at 76% 38%, rgba(217,70,239,.74), transparent 34%),
        linear-gradient(135deg,#2A2137,#14111C);
    }
    .abstract-cover:after{
      content:attr(data-code);
      position:absolute;
      right:14px;
      bottom:10px;
      font-size:34px;
      line-height:1;
      font-weight:900;
      color:rgba(255,255,255,.16);
      letter-spacing:-.05em;
    }
    .preview-body{
      padding:18px;
      display:flex;
      flex-direction:column;
      flex:1;
    }
    .preview-body p{color:var(--muted);font-size:14px;margin:0 0 14px}
    .preview-foot{
      margin-top:auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      color:var(--muted);
      font-size:13px;
    }
    .inline-link{
      color:#fff;
      font-weight:760;
      border-bottom:1px solid rgba(217,70,239,.58);
      transition:color var(--ease), border-color var(--ease);
    }
    .inline-link:hover{color:#F0ABFC;border-color:var(--coral)}
    .faq-grid{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:24px;
      align-items:start;
    }
    .faq-aside{
      padding:24px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 20% 20%, rgba(45,212,191,.12), transparent 36%),
        rgba(31,27,42,.72);
      border:1px solid var(--line);
    }
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border-radius:18px;
      border:1px solid var(--line);
      background:rgba(31,27,42,.74);
      overflow:hidden;
      transition:border-color var(--ease), background var(--ease);
    }
    .faq-item.open{
      border-color:rgba(217,70,239,.62);
      background:rgba(36,28,48,.86);
    }
    .faq-question{
      width:100%;
      min-height:56px;
      padding:16px 18px;
      background:transparent;
      color:var(--text);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      text-align:left;
      font-weight:760;
    }
    .faq-icon{
      width:26px;
      height:26px;
      border-radius:50%;
      border:1px solid var(--line-2);
      position:relative;
      flex:0 0 auto;
      transition:transform var(--ease), border-color var(--ease), background var(--ease);
    }
    .faq-icon:before,.faq-icon:after{
      content:"";
      position:absolute;
      left:7px;
      right:7px;
      top:50%;
      height:2px;
      background:#fff;
      border-radius:99px;
      transform:translateY(-50%);
    }
    .faq-icon:after{transform:translateY(-50%) rotate(90deg)}
    .faq-item.open .faq-icon{
      transform:rotate(180deg);
      border-color:rgba(217,70,239,.7);
      background:rgba(217,70,239,.16);
    }
    .faq-item.open .faq-icon:after{opacity:0}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height 240ms ease-out;
    }
    .faq-answer p{
      margin:0;
      padding:0 18px 18px;
      color:var(--muted);
      font-size:15px;
    }
    .cta-card{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      padding:30px;
      border:1px solid rgba(217,70,239,.34);
      background:
        radial-gradient(circle at 18% 30%, rgba(217,70,239,.25), transparent 32%),
        radial-gradient(circle at 86% 20%, rgba(251,113,133,.20), transparent 34%),
        linear-gradient(135deg, rgba(44,28,60,.96), rgba(18,16,24,.96));
      box-shadow:var(--shadow);
    }
    .cta-card:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(115deg, transparent 0 48%, rgba(255,255,255,.05) 49% 50%, transparent 51% 100%);
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
    }
    .cta-inner p{color:var(--soft);max-width:720px;margin-bottom:0}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .site-footer{
      border-top:1px solid rgba(68,62,85,.7);
      background:rgba(12,10,17,.88);
      padding:42px 0 26px;
      margin-top:42px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:820;
      margin-bottom:10px;
    }
    .footer-text{
      color:var(--muted);
      max-width:620px;
      margin:0;
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 18px;
      justify-content:flex-end;
    }
    .footer-links a{
      color:var(--soft);
      font-size:14px;
      transition:color var(--ease);
    }
    .footer-links a:hover{color:#fff}
    .copyright{
      margin-top:28px;
      padding-top:20px;
      border-top:1px solid rgba(68,62,85,.58);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:var(--muted);
      font-size:13px;
    }
    @media (max-width:1024px){
      .nav{grid-template-columns:auto 1fr auto}
      .brand{min-width:auto;justify-self:center}
      .nav-left,.nav-right{display:none}
      .menu-toggle{display:flex;justify-self:end}
      .mobile-panel.show{display:block}
      .hero-shell,.notice-grid,.faq-grid,.cta-inner{grid-template-columns:1fr}
      .hero-copy{min-height:auto}
      .summary-panel{grid-template-columns:repeat(2,1fr)}
      .rules-layout{grid-template-columns:1fr}
      .group-nav{
        position:relative;
        top:auto;
        display:flex;
        overflow-x:auto;
        gap:8px;
      }
      .group-nav a{min-width:max-content}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 28px),var(--container))}
      .section{padding:58px 0}
      .section-tight{padding:42px 0}
      .hero{padding:38px 0 28px}
      .hero-copy{padding:24px}
      .hero-note,.summary-panel{grid-template-columns:1fr}
      .section-head{display:block}
      .section-head p{margin-top:8px}
      .rule-item{grid-template-columns:1fr}
      .rule-meta{align-items:flex-start;text-align:left;min-width:0}
      .preview-track{grid-auto-columns:minmax(240px,84vw)}
      .brand-text{font-size:14px}
      .brand{padding:9px 12px;gap:8px}
      .cta-card{padding:24px}
      .btn{width:100%}
      .cta-actions{width:100%}
      .footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .brand-mark{width:20px;height:20px}
      .brand-text{max-width:178px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      h1{font-size:30px}
      .hero-actions{display:grid}
      .mini-note{padding:13px}
      .group-title{display:block}
      .group-title .badge{margin-top:10px}
    }