/* roulang page: index */
:root {
            --color-primary: #8B5CF6;
            --color-primary-dark: #6D28D9;
            --color-accent: #FF6B81;
            --color-warm: #FFD166;
            --color-ink: #15111f;
            --color-text: #31283f;
            --color-muted: #756b84;
            --color-subtle: #f7f2ff;
            --color-surface: #ffffff;
            --color-surface-2: #fbf9ff;
            --color-border: rgba(80, 55, 120, .14);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --shadow-sm: 0 8px 24px rgba(48, 32, 82, .08);
            --shadow-md: 0 18px 48px rgba(54, 35, 98, .14);
            --shadow-lg: 0 30px 80px rgba(75, 48, 128, .22);
            --nav-width: 286px;
            --container: 1180px;
            --ease: cubic-bezier(.22, 1, .36, 1);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            min-height: 100vh;
            font-family: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--color-text);
            background:
                radial-gradient(circle at 82% 6%, rgba(139, 92, 246, .16), transparent 32rem),
                radial-gradient(circle at 20% 18%, rgba(255, 107, 129, .10), transparent 26rem),
                linear-gradient(180deg, #fff 0%, #fbf9ff 46%, #fff 100%);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
        }

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

        button, input {
            font: inherit;
        }

        button {
            cursor: pointer;
        }

        ::selection {
            color: #fff;
            background: var(--color-primary);
        }

        :focus-visible {
            outline: 3px solid rgba(255, 107, 129, .42);
            outline-offset: 3px;
            border-radius: 12px;
        }

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

        .side-nav {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--nav-width);
            height: 100vh;
            padding: 28px 22px;
            background: rgba(255, 255, 255, .78);
            border-right: 1px solid var(--color-border);
            backdrop-filter: blur(22px);
            z-index: 50;
            display: flex;
            flex-direction: column;
            gap: 26px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 12px;
            border-radius: 22px;
            background: linear-gradient(135deg, rgba(139, 92, 246, .12), rgba(255, 107, 129, .10));
            border: 1px solid rgba(139, 92, 246, .18);
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border-radius: 16px;
            color: #fff;
            display: grid;
            place-items: center;
            font-weight: 900;
            letter-spacing: -.06em;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            box-shadow: 0 14px 28px rgba(139, 92, 246, .28);
        }

        .brand-text {
            min-width: 0;
        }

        .brand-name {
            display: block;
            font-size: 15px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--color-ink);
        }

        .brand-sub {
            display: block;
            margin-top: 2px;
            font-size: 12px;
            color: var(--color-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .nav-menu {
            display: grid;
            gap: 10px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 14px;
            border-radius: 18px;
            font-weight: 800;
            color: var(--color-muted);
            border: 1px solid transparent;
        }

        .nav-item:hover {
            color: var(--color-primary-dark);
            background: rgba(139, 92, 246, .08);
            transform: translateX(2px);
        }

        .nav-item.active {
            color: var(--color-primary-dark);
            background: #fff;
            border-color: rgba(139, 92, 246, .18);
            box-shadow: var(--shadow-sm);
        }

        .nav-dot {
            width: 10px;
            height: 10px;
            border-radius: 999px;
            background: currentColor;
            box-shadow: 0 0 0 6px rgba(139, 92, 246, .10);
        }

        .side-card {
            margin-top: auto;
            padding: 18px;
            border-radius: 24px;
            color: #fff;
            background:
                radial-gradient(circle at 82% 10%, rgba(255, 255, 255, .28), transparent 9rem),
                linear-gradient(145deg, #231a3a, #5b21b6 58%, #ff6b81);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            position: relative;
        }

        .side-card::after {
            content: "";
            position: absolute;
            width: 120px;
            height: 120px;
            right: -52px;
            bottom: -52px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .16);
        }

        .side-card strong {
            display: block;
            font-size: 16px;
            line-height: 1.45;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .side-card p {
            margin: 0 0 14px;
            font-size: 13px;
            color: rgba(255, 255, 255, .78);
            position: relative;
            z-index: 1;
        }

        .side-card a {
            position: relative;
            z-index: 1;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 12px;
            border-radius: 999px;
            background: #fff;
            color: var(--color-primary-dark);
            font-size: 13px;
            font-weight: 900;
        }

        .side-card a:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(0, 0, 0, .18);
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 60;
            padding: 12px 16px;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .mobile-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            padding-top: 10px;
            scrollbar-width: none;
        }

        .mobile-nav::-webkit-scrollbar {
            display: none;
        }

        .mobile-nav a {
            flex: 0 0 auto;
            padding: 8px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 800;
            color: var(--color-primary-dark);
            background: rgba(139, 92, 246, .10);
        }

        .mobile-nav a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
        }

        .main-content {
            width: calc(100% - var(--nav-width));
            margin-left: var(--nav-width);
        }

        .container-page {
            width: min(var(--container), calc(100% - 48px));
            margin: 0 auto;
        }

        main {
            overflow: hidden;
        }

        .section {
            padding: 76px 0;
        }

        .section-tight {
            padding: 52px 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 28px;
            margin-bottom: 30px;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 12px;
            border-radius: 999px;
            color: var(--color-primary-dark);
            background: rgba(139, 92, 246, .10);
            border: 1px solid rgba(139, 92, 246, .14);
            font-size: 13px;
            font-weight: 900;
        }

        .section-title {
            margin: 12px 0 0;
            color: var(--color-ink);
            font-size: clamp(28px, 4vw, 46px);
            line-height: 1.16;
            letter-spacing: -.04em;
            font-weight: 950;
        }

        .section-desc {
            max-width: 640px;
            margin: 10px 0 0;
            color: var(--color-muted);
            font-size: 16px;
            line-height: 1.9;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 48px;
            padding: 13px 20px;
            border-radius: 999px;
            border: 1px solid transparent;
            font-weight: 900;
            line-height: 1;
            transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, var(--color-accent), #ff8a42);
            box-shadow: 0 16px 34px rgba(255, 107, 129, .34);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 24px 48px rgba(255, 107, 129, .42);
        }

        .btn-dark {
            color: #fff;
            background: var(--color-ink);
            box-shadow: 0 16px 34px rgba(21, 17, 31, .22);
        }

        .btn-dark:hover {
            transform: translateY(-3px);
            background: #2a2139;
        }

        .btn-soft {
            color: var(--color-primary-dark);
            background: #fff;
            border-color: rgba(139, 92, 246, .20);
            box-shadow: var(--shadow-sm);
        }

        .btn-soft:hover {
            transform: translateY(-3px);
            border-color: rgba(139, 92, 246, .38);
            box-shadow: var(--shadow-md);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 900;
            color: var(--color-primary-dark);
            background: rgba(139, 92, 246, .10);
        }

        .card {
            border: 1px solid var(--color-border);
            background: rgba(255, 255, 255, .82);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(139, 92, 246, .25);
        }

        .hero {
            padding: 28px 0 64px;
        }

        .promo-hero {
            position: relative;
            min-height: 520px;
            display: grid;
            align-items: center;
            padding: clamp(34px, 5vw, 64px);
            border-radius: 0 0 46px 46px;
            overflow: hidden;
            color: #fff;
            background:
                radial-gradient(circle at 18% 18%, rgba(255, 209, 102, .38), transparent 16rem),
                radial-gradient(circle at 92% 12%, rgba(255, 255, 255, .18), transparent 18rem),
                linear-gradient(135deg, #201435 0%, #6d28d9 52%, #ff6b81 100%);
            box-shadow: var(--shadow-lg);
        }

        .promo-hero::before {
            content: "";
            position: absolute;
            inset: 16px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 34px;
            pointer-events: none;
        }

        .promo-ribbon {
            position: absolute;
            left: -76px;
            top: 36px;
            transform: rotate(-9deg);
            width: 360px;
            text-align: center;
            padding: 10px 20px;
            background: var(--color-warm);
            color: #301d08;
            font-weight: 950;
            letter-spacing: .08em;
            box-shadow: 0 18px 38px rgba(0, 0, 0, .16);
        }

        .burst {
            position: absolute;
            right: clamp(22px, 5vw, 72px);
            top: clamp(20px, 5vw, 58px);
            width: 116px;
            height: 116px;
            display: grid;
            place-items: center;
            text-align: center;
            color: #301d08;
            font-size: 17px;
            font-weight: 950;
            line-height: 1.22;
            background: var(--color-warm);
            clip-path: polygon(50% 0%, 61% 25%, 88% 12%, 75% 39%, 100% 50%, 75% 61%, 88% 88%, 61% 75%, 50% 100%, 39% 75%, 12% 88%, 25% 61%, 0% 50%, 25% 39%, 12% 12%, 39% 25%);
            filter: drop-shadow(0 18px 26px rgba(0, 0, 0, .20));
            transform: rotate(8deg);
        }

        .hero-copy {
            position: relative;
            z-index: 1;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
            padding: 8px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .22);
            color: rgba(255, 255, 255, .92);
            font-weight: 900;
        }

        .hero h1 {
            margin: 0;
            color: #fff;
            font-size: clamp(38px, 6vw, 74px);
            line-height: 1.06;
            font-weight: 950;
            letter-spacing: -.065em;
            text-shadow: 0 16px 40px rgba(0, 0, 0, .20);
        }

        .hero-intro {
            max-width: 780px;
            margin: 22px auto 0;
            color: rgba(255, 255, 255, .84);
            font-size: clamp(16px, 2vw, 19px);
            line-height: 1.95;
        }

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

        .hero-metrics {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            max-width: 880px;
            margin: 36px auto 0;
        }

        .metric-pill {
            padding: 18px 16px;
            border-radius: 24px;
            background: rgba(255, 255, 255, .13);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(16px);
            text-align: center;
        }

        .metric-pill strong {
            display: block;
            color: #fff;
            font-size: 24px;
            line-height: 1.1;
            font-weight: 950;
        }

        .metric-pill span {
            display: block;
            margin-top: 8px;
            color: rgba(255, 255, 255, .72);
            font-size: 13px;
            font-weight: 700;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 24px;
            align-items: stretch;
        }

        .step-large {
            padding: 34px;
            background:
                radial-gradient(circle at 90% 16%, rgba(139, 92, 246, .16), transparent 13rem),
                #fff;
        }

        .numbered-list {
            display: grid;
            gap: 16px;
            margin-top: 24px;
        }

        .numbered-item {
            display: grid;
            grid-template-columns: 44px 1fr;
            gap: 14px;
            align-items: start;
            padding: 16px;
            border-radius: 20px;
            background: var(--color-surface-2);
            border: 1px solid rgba(139, 92, 246, .10);
        }

        .num {
            width: 44px;
            height: 44px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            color: #fff;
            font-weight: 950;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            box-shadow: 0 12px 26px rgba(139, 92, 246, .24);
        }

        .numbered-item h3 {
            margin: 0;
            color: var(--color-ink);
            font-size: 17px;
            font-weight: 950;
        }

        .numbered-item p {
            margin: 4px 0 0;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .invite-panel {
            padding: 30px;
            background: linear-gradient(145deg, #fff, #f8f2ff);
        }

        .mini-stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            margin-top: 22px;
        }

        .mini-stat {
            padding: 18px;
            border-radius: 22px;
            background: #fff;
            border: 1px solid var(--color-border);
        }

        .mini-stat b {
            display: block;
            color: var(--color-primary-dark);
            font-size: 26px;
            line-height: 1;
            font-weight: 950;
        }

        .mini-stat span {
            display: block;
            margin-top: 8px;
            color: var(--color-muted);
            font-size: 13px;
        }

        .progress-wrap {
            display: grid;
            gap: 18px;
        }

        .progress-card {
            padding: 22px;
            border-radius: 26px;
            background: #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .progress-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 14px;
        }

        .progress-top h3 {
            margin: 0;
            color: var(--color-ink);
            font-size: 18px;
            font-weight: 950;
        }

        .progress-bar {
            height: 12px;
            border-radius: 999px;
            overflow: hidden;
            background: rgba(139, 92, 246, .10);
        }

        .progress-line {
            height: 100%;
            border-radius: inherit;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-warm));
            box-shadow: 0 8px 20px rgba(255, 107, 129, .24);
        }

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

        .rank-layout {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 24px;
        }

        .rank-feature {
            padding: 34px;
            color: #fff;
            background:
                radial-gradient(circle at 18% 18%, rgba(255, 209, 102, .30), transparent 14rem),
                linear-gradient(145deg, #15111f, #40236e 60%, #7c3aed);
        }

        .rank-feature .section-kicker {
            color: #fff;
            background: rgba(255, 255, 255, .14);
            border-color: rgba(255, 255, 255, .18);
        }

        .rank-feature h2 {
            margin-top: 16px;
            color: #fff;
        }

        .rank-feature p {
            color: rgba(255, 255, 255, .76);
        }

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

        .rank-item {
            display: grid;
            grid-template-columns: 54px 1fr auto;
            gap: 16px;
            align-items: center;
            padding: 18px;
            border-radius: 24px;
            background: #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .rank-no {
            width: 54px;
            height: 54px;
            border-radius: 20px;
            display: grid;
            place-items: center;
            color: var(--color-primary-dark);
            background: rgba(139, 92, 246, .10);
            font-weight: 950;
            font-size: 18px;
        }

        .rank-item h3 {
            margin: 0;
            color: var(--color-ink);
            font-size: 17px;
            font-weight: 950;
        }

        .rank-item p {
            margin: 4px 0 0;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.65;
        }

        .rank-heat {
            color: var(--color-accent);
            font-weight: 950;
            white-space: nowrap;
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr .6fr;
            gap: 24px;
        }

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

        .news-link {
            display: grid;
            grid-template-columns: 110px 1fr auto;
            gap: 16px;
            align-items: center;
            padding: 18px;
            border-radius: 24px;
            background: #fff;
            border: 1px solid var(--color-border);
        }

        .news-link:hover {
            transform: translateX(4px);
            border-color: rgba(139, 92, 246, .30);
            box-shadow: var(--shadow-sm);
        }

        .news-date {
            color: var(--color-primary-dark);
            font-weight: 950;
            font-size: 13px;
        }

        .news-link strong {
            display: block;
            color: var(--color-ink);
            font-size: 17px;
            line-height: 1.45;
        }

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

        .recommend-box {
            padding: 26px;
            border-radius: 28px;
            background:
                radial-gradient(circle at 80% 0%, rgba(255, 107, 129, .14), transparent 12rem),
                #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .recommend-box h3 {
            margin: 0 0 14px;
            color: var(--color-ink);
            font-size: 20px;
            font-weight: 950;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            padding: 8px 11px;
            border-radius: 999px;
            color: var(--color-muted);
            background: var(--color-surface-2);
            border: 1px solid rgba(139, 92, 246, .10);
            font-size: 13px;
            font-weight: 800;
        }

        .tag:hover {
            color: var(--color-primary-dark);
            border-color: rgba(139, 92, 246, .25);
            background: rgba(139, 92, 246, .08);
        }

        .highlight-wall {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 18px;
        }

        .highlight-card {
            min-height: 190px;
            padding: 24px;
            border-radius: 30px;
            border: 1px solid var(--color-border);
            background: #fff;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .highlight-card::after {
            content: "";
            position: absolute;
            width: 130px;
            height: 130px;
            right: -60px;
            bottom: -60px;
            border-radius: 999px;
            background: rgba(139, 92, 246, .10);
        }

        .highlight-card:nth-child(1) {
            grid-column: span 5;
            background: linear-gradient(145deg, #fff, #fff2f5);
        }

        .highlight-card:nth-child(2) {
            grid-column: span 4;
        }

        .highlight-card:nth-child(3) {
            grid-column: span 3;
            background: linear-gradient(145deg, #fff, #f5efff);
        }

        .highlight-card:nth-child(4) {
            grid-column: span 7;
        }

        .highlight-card:nth-child(5) {
            grid-column: span 5;
            background: linear-gradient(145deg, #191326, #6d28d9);
            color: #fff;
        }

        .highlight-card h3 {
            position: relative;
            z-index: 1;
            margin: 14px 0 8px;
            color: inherit;
            font-size: 20px;
            font-weight: 950;
        }

        .highlight-card p {
            position: relative;
            z-index: 1;
            margin: 0;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .highlight-card:nth-child(5) p {
            color: rgba(255, 255, 255, .76);
        }

        .timeline {
            position: relative;
            display: grid;
            gap: 16px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 27px;
            top: 16px;
            bottom: 16px;
            width: 2px;
            background: linear-gradient(180deg, var(--color-primary), rgba(139, 92, 246, 0));
        }

        .timeline-item {
            position: relative;
            display: grid;
            grid-template-columns: 56px 1fr;
            gap: 18px;
            align-items: start;
        }

        .timeline-dot {
            width: 56px;
            height: 56px;
            border-radius: 20px;
            display: grid;
            place-items: center;
            color: #fff;
            font-weight: 950;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            box-shadow: 0 14px 28px rgba(139, 92, 246, .24);
            z-index: 1;
        }

        .timeline-card {
            padding: 20px 22px;
            border-radius: 26px;
            background: #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .timeline-card h3 {
            margin: 0;
            color: var(--color-ink);
            font-size: 18px;
            font-weight: 950;
        }

        .timeline-card p {
            margin: 6px 0 0;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .media-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding: 4px 0 16px;
            scroll-snap-type: x mandatory;
            scrollbar-color: rgba(139, 92, 246, .35) transparent;
        }

        .media-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            padding: 22px;
            border-radius: 28px;
            background: #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .media-icon {
            width: 52px;
            height: 52px;
            border-radius: 20px;
            display: grid;
            place-items: center;
            color: #fff;
            font-size: 22px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
        }

        .media-card h3 {
            margin: 18px 0 8px;
            color: var(--color-ink);
            font-size: 18px;
            font-weight: 950;
        }

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

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .faq-item {
            padding: 24px;
            border-radius: 28px;
            background: #fff;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-item h3 {
            margin: 0 0 10px;
            color: var(--color-ink);
            font-size: 18px;
            font-weight: 950;
        }

        .faq-item p {
            margin: 0;
            color: var(--color-muted);
            font-size: 14px;
            line-height: 1.85;
        }

        .cta-section {
            padding: 52px 0 88px;
        }

        .cta-card {
            position: relative;
            overflow: hidden;
            padding: clamp(30px, 5vw, 54px);
            border-radius: 42px;
            color: #fff;
            background:
                radial-gradient(circle at 10% 10%, rgba(255, 209, 102, .28), transparent 16rem),
                radial-gradient(circle at 88% 20%, rgba(255, 255, 255, .16), transparent 14rem),
                linear-gradient(135deg, #15111f, #5b21b6 58%, #ff6b81);
            box-shadow: var(--shadow-lg);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            inset: 18px;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 30px;
            pointer-events: none;
        }

        .cta-layout {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 32px;
            align-items: center;
        }

        .cta-card h2 {
            margin: 14px 0 12px;
            color: #fff;
            font-size: clamp(30px, 4vw, 52px);
            line-height: 1.12;
            letter-spacing: -.05em;
            font-weight: 950;
        }

        .cta-card p {
            margin: 0;
            color: rgba(255, 255, 255, .78);
            line-height: 1.9;
        }

        .lead-form {
            padding: 22px;
            border-radius: 30px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(18px);
        }

        .form-field {
            display: grid;
            gap: 8px;
            margin-bottom: 12px;
        }

        .form-field label {
            color: rgba(255, 255, 255, .86);
            font-size: 13px;
            font-weight: 900;
        }

        .form-field input {
            width: 100%;
            min-height: 48px;
            padding: 12px 14px;
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 16px;
            color: #fff;
            background: rgba(255, 255, 255, .10);
            outline: none;
            transition: border-color .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
        }

        .form-field input::placeholder {
            color: rgba(255, 255, 255, .48);
        }

        .form-field input:focus {
            border-color: rgba(255, 209, 102, .72);
            box-shadow: 0 0 0 4px rgba(255, 209, 102, .16);
            background: rgba(255, 255, 255, .14);
        }

        .form-hint {
            margin-top: 12px;
            color: rgba(255, 255, 255, .60);
            font-size: 12px;
            line-height: 1.65;
        }

        .site-footer {
            margin-left: var(--nav-width);
            padding: 34px 0;
            color: rgba(255, 255, 255, .72);
            background: #15111f;
        }

        .footer-inner {
            width: min(var(--container), calc(100% - 48px));
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-weight: 950;
        }

        .footer-brand .brand-mark {
            width: 38px;
            height: 38px;
            flex-basis: 38px;
            border-radius: 14px;
        }

        .footer-note {
            color: rgba(255, 255, 255, .55);
            font-size: 13px;
            text-align: right;
        }

        .footer-note a {
            color: rgba(255, 255, 255, .78);
            border-bottom: 1px solid rgba(255, 255, 255, .24);
        }

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

        .fixed-cta {
            position: fixed;
            right: 22px;
            bottom: 22px;
            z-index: 45;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 13px 18px;
            border-radius: 999px;
            color: #fff;
            font-weight: 950;
            background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
            box-shadow: 0 18px 44px rgba(139, 92, 246, .34);
        }

        .fixed-cta:hover {
            transform: translateY(-4px);
            box-shadow: 0 26px 54px rgba(139, 92, 246, .42);
        }

        @media (max-width: 1180px) {
            :root {
                --nav-width: 248px;
            }

            .side-nav {
                padding: 22px 16px;
            }

            .steps-grid,
            .rank-layout,
            .news-layout,
            .cta-layout {
                grid-template-columns: 1fr;
            }

            .rank-feature {
                min-height: 320px;
            }
        }

        @media (max-width: 900px) {
            .site-shell {
                display: block;
            }

            .side-nav {
                display: none;
            }

            .mobile-header {
                display: block;
            }

            .main-content,
            .site-footer {
                width: 100%;
                margin-left: 0;
            }

            .container-page,
            .footer-inner {
                width: min(100% - 32px, var(--container));
            }

            .section {
                padding: 56px 0;
            }

            .hero {
                padding-top: 16px;
            }

            .promo-hero {
                min-height: auto;
                padding: 78px 22px 34px;
                border-radius: 30px;
            }

            .promo-ribbon {
                left: -96px;
                top: 24px;
                font-size: 12px;
            }

            .burst {
                width: 92px;
                height: 92px;
                right: 16px;
                top: 28px;
                font-size: 14px;
            }

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

            .section-head {
                align-items: flex-start;
                flex-direction: column;
            }

            .highlight-card:nth-child(n) {
                grid-column: span 6;
            }

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

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

            .footer-note {
                text-align: left;
            }
        }

        @media (max-width: 640px) {
            body {
                line-height: 1.7;
            }

            .brand-name {
                font-size: 13px;
            }

            .brand-sub {
                display: none;
            }

            .mobile-header .brand-link {
                padding: 8px;
            }

            .brand-mark {
                width: 36px;
                height: 36px;
                flex-basis: 36px;
                border-radius: 14px;
            }

            .section {
                padding: 46px 0;
            }

            .section-title {
                font-size: 30px;
                letter-spacing: -.035em;
            }

            .hero h1 {
                font-size: 36px;
            }

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

            .btn {
                width: 100%;
            }

            .mini-stat-grid {
                grid-template-columns: 1fr;
            }

            .rank-item,
            .news-link {
                grid-template-columns: 1fr;
            }

            .rank-heat {
                white-space: normal;
            }

            .highlight-wall {
                grid-template-columns: 1fr;
            }

            .highlight-card:nth-child(n) {
                grid-column: auto;
            }

            .timeline::before {
                left: 22px;
            }

            .timeline-item {
                grid-template-columns: 44px 1fr;
                gap: 14px;
            }

            .timeline-dot {
                width: 44px;
                height: 44px;
                border-radius: 16px;
                font-size: 13px;
            }

            .media-card {
                flex-basis: 260px;
            }

            .cta-card {
                border-radius: 30px;
            }

            .lead-form {
                padding: 16px;
            }

            .fixed-cta {
                left: 16px;
                right: 16px;
                justify-content: center;
            }
        }