/* roulang page: index */
:root {
            --primary: #1d4ed8;
            --primary-dark: #1e40af;
            --primary-soft: #dbeafe;
            --accent: #06b6d4;
            --accent-soft: #cffafe;
            --ink: #0f172a;
            --text: #334155;
            --muted: #64748b;
            --light: #f8fafc;
            --panel: #ffffff;
            --line: #e2e8f0;
            --line-strong: #cbd5e1;
            --success: #16a34a;
            --warning: #f59e0b;
            --danger: #ef4444;
            --radius-xs: 10px;
            --radius-sm: 14px;
            --radius-md: 20px;
            --radius-lg: 28px;
            --shadow-sm: 0 10px 24px rgba(15, 23, 42, .06);
            --shadow-md: 0 20px 45px rgba(15, 23, 42, .10);
            --shadow-lg: 0 26px 70px rgba(29, 78, 216, .18);
            --container: 1180px;
            --nav-height: 76px;
            --ease: cubic-bezier(.22, .61, .36, 1);
        }

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

        html {
            scroll-behavior: smooth;
            text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
            color: var(--text);
            background:
                radial-gradient(circle at top left, rgba(219, 234, 254, .92), transparent 34%),
                linear-gradient(180deg, #ffffff 0%, #f8fafc 42%, #eef6ff 100%);
            line-height: 1.72;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
        }

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

        button, input, textarea {
            font: inherit;
        }

        button {
            border: 0;
            cursor: pointer;
        }

        ::selection {
            background: rgba(29, 78, 216, .16);
            color: var(--ink);
        }

        :focus-visible {
            outline: 3px solid rgba(6, 182, 212, .45);
            outline-offset: 3px;
            border-radius: 12px;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            backdrop-filter: saturate(160%) blur(18px);
            background: rgba(255, 255, 255, .86);
            border-bottom: 1px solid rgba(226, 232, 240, .82);
        }

        .nav-shell {
            height: var(--nav-height);
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            gap: 20px;
        }

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

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 16px;
            border-radius: 999px;
            color: var(--muted);
            font-weight: 700;
            font-size: 14px;
            border: 1px solid transparent;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-color: rgba(29, 78, 216, .12);
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--ink);
            font-weight: 900;
            letter-spacing: -.02em;
            white-space: nowrap;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 14px 30px rgba(29, 78, 216, .24);
            font-size: 18px;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.08;
        }

        .brand-text strong {
            font-size: 16px;
        }

        .brand-text span {
            margin-top: 3px;
            font-size: 11px;
            color: var(--muted);
            font-weight: 700;
            letter-spacing: .08em;
        }

        .header-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--line);
            color: var(--muted);
            font-size: 13px;
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--primary-soft);
            color: var(--primary);
            align-items: center;
            justify-content: center;
        }

        .mobile-menu-btn span {
            width: 18px;
            height: 2px;
            background: currentColor;
            position: relative;
            border-radius: 99px;
        }

        .mobile-menu-btn span::before,
        .mobile-menu-btn span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 18px;
            height: 2px;
            background: currentColor;
            border-radius: 99px;
        }

        .mobile-menu-btn span::before { top: -6px; }
        .mobile-menu-btn span::after { top: 6px; }

        .section {
            padding: 82px 0;
        }

        .section-tight {
            padding: 58px 0;
        }

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

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 12px;
            border-radius: 999px;
            background: rgba(219, 234, 254, .82);
            color: var(--primary);
            font-weight: 800;
            font-size: 13px;
            margin-bottom: 12px;
        }

        .section-title {
            color: var(--ink);
            font-size: clamp(26px, 3vw, 42px);
            line-height: 1.16;
            letter-spacing: -.04em;
            font-weight: 900;
        }

        .section-desc {
            margin-top: 12px;
            max-width: 720px;
            color: var(--muted);
            font-size: 16px;
        }

        .hero {
            padding: 42px 0 76px;
        }

        .hero-stage {
            position: relative;
            overflow: hidden;
            border-radius: 34px;
            min-height: 520px;
            background:
                linear-gradient(135deg, rgba(15, 23, 42, .82), rgba(29, 78, 216, .74)),
                url("data:image/svg+xml,%3Csvg width='1200' height='620' viewBox='0 0 1200 620' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0' y1='0' x2='1' y2='1'%3E%3Cstop stop-color='%2393c5fd'/%3E%3Cstop offset='1' stop-color='%2306b6d4'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='1200' height='620' fill='%23eff6ff'/%3E%3Cg opacity='.55'%3E%3Ccircle cx='1030' cy='80' r='210' fill='url(/%23g)'/%3E%3Ccircle cx='90' cy='520' r='260' fill='%23bfdbfe'/%3E%3Cpath d='M150 170 C 350 60, 520 250, 710 150 S 1020 130, 1120 320' stroke='%23ffffff' stroke-width='42' fill='none' opacity='.52'/%3E%3C/g%3E%3C/svg%3E");
            background-size: cover;
            box-shadow: var(--shadow-lg);
            color: #fff;
        }

        .hero-stage::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 78% 22%, rgba(6, 182, 212, .36), transparent 26%),
                linear-gradient(90deg, rgba(15, 23, 42, .82), rgba(15, 23, 42, .16));
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            padding: clamp(34px, 5vw, 64px);
            min-height: 520px;
            display: grid;
            grid-template-columns: minmax(0, 1.18fr) minmax(320px, .82fr);
            align-items: center;
            gap: 36px;
        }

        .hero-copy {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 9px 13px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .24);
            backdrop-filter: blur(10px);
            font-size: 13px;
            font-weight: 800;
        }

        .hero-badge i {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 0 6px rgba(34, 197, 94, .16);
        }

        h1 {
            margin-top: 22px;
            color: #fff;
            font-size: clamp(36px, 5.2vw, 70px);
            line-height: 1.04;
            letter-spacing: -.06em;
            font-weight: 950;
        }

        .hero-intro {
            max-width: 670px;
            margin-top: 22px;
            color: rgba(255, 255, 255, .86);
            font-size: clamp(16px, 1.5vw, 19px);
        }

        .hero-actions {
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 20px;
            border-radius: 999px;
            font-weight: 900;
            border: 1px solid transparent;
            box-shadow: none;
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
        }

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

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

        .btn-primary {
            background: linear-gradient(135deg, #ffffff, #e0f2fe);
            color: var(--primary-dark);
            box-shadow: 0 16px 34px rgba(255, 255, 255, .18);
        }

        .btn-primary:hover {
            box-shadow: 0 20px 42px rgba(255, 255, 255, .26);
        }

        .btn-ghost {
            color: #fff;
            background: rgba(255, 255, 255, .12);
            border-color: rgba(255, 255, 255, .24);
            backdrop-filter: blur(10px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .18);
        }

        .btn-blue {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 14px 34px rgba(29, 78, 216, .24);
        }

        .btn-blue:hover {
            box-shadow: 0 18px 42px rgba(29, 78, 216, .3);
        }

        .hero-metrics {
            margin-top: 34px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .metric-pill {
            padding: 12px 15px;
            min-width: 134px;
            border-radius: 18px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(10px);
        }

        .metric-pill strong {
            display: block;
            font-size: 22px;
            line-height: 1.1;
        }

        .metric-pill span {
            display: block;
            margin-top: 4px;
            color: rgba(255, 255, 255, .76);
            font-size: 12px;
        }

        .progress-panel {
            border-radius: 28px;
            padding: 22px;
            background: rgba(255, 255, 255, .92);
            color: var(--ink);
            box-shadow: 0 24px 60px rgba(15, 23, 42, .22);
            border: 1px solid rgba(255, 255, 255, .72);
        }

        .progress-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            margin-bottom: 18px;
        }

        .progress-top strong {
            font-size: 18px;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            padding: 7px 10px;
            border-radius: 999px;
            background: var(--accent-soft);
            color: #0e7490;
            font-weight: 900;
            font-size: 12px;
            white-space: nowrap;
        }

        .progress-body {
            display: grid;
            grid-template-columns: 154px 1fr;
            gap: 18px;
            align-items: center;
        }

        .ring {
            --value: 72%;
            width: 154px;
            height: 154px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: conic-gradient(var(--primary) 0 var(--value), #e2e8f0 var(--value) 100%);
            position: relative;
            box-shadow: inset 0 0 0 1px rgba(15, 23, 42, .05);
        }

        .ring::after {
            content: "";
            position: absolute;
            inset: 14px;
            border-radius: 50%;
            background: #fff;
            box-shadow: inset 0 0 0 1px var(--line);
        }

        .ring span {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--primary);
            font-weight: 950;
            font-size: 32px;
            line-height: 1;
        }

        .ring small {
            margin-top: 6px;
            color: var(--muted);
            font-size: 12px;
            font-weight: 800;
        }

        .tier-list {
            display: grid;
            gap: 10px;
        }

        .tier {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 12px;
            border-radius: 16px;
            border: 1px solid var(--line);
            background: #f8fafc;
        }

        .tier:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
            border-color: rgba(29, 78, 216, .18);
        }

        .tier b {
            display: block;
            color: var(--ink);
            font-size: 14px;
        }

        .tier small {
            display: block;
            color: var(--muted);
            font-weight: 700;
            margin-top: 2px;
        }

        .tier em {
            font-style: normal;
            color: var(--primary);
            font-weight: 950;
            white-space: nowrap;
        }

        .support-line {
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px dashed var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .support-line p {
            color: var(--muted);
            font-size: 13px;
        }

        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.4fr) minmax(300px, .6fr);
            gap: 24px;
        }

        .news-list,
        .side-panel,
        .card,
        .app-panel,
        .faq-item,
        .about-card {
            background: rgba(255, 255, 255, .92);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            border-radius: var(--radius-md);
        }

        .news-list {
            padding: 10px;
        }

        .news-item {
            display: grid;
            grid-template-columns: 96px 1fr auto;
            gap: 18px;
            align-items: center;
            padding: 18px;
            border-radius: 18px;
            border: 1px solid transparent;
        }

        .news-item + .news-item {
            border-top: 1px solid var(--line);
            border-radius: 0;
        }

        .news-item:hover {
            background: #f8fafc;
            border-color: rgba(29, 78, 216, .12);
            transform: translateX(2px);
        }

        .news-date {
            display: grid;
            place-items: center;
            min-height: 62px;
            border-radius: 16px;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 950;
            line-height: 1.15;
            text-align: center;
        }

        .news-date span {
            display: block;
            color: var(--muted);
            font-size: 12px;
            font-weight: 800;
        }

        .news-title {
            color: var(--ink);
            font-weight: 900;
            font-size: 17px;
            line-height: 1.35;
        }

        .news-summary {
            margin-top: 6px;
            color: var(--muted);
            font-size: 14px;
        }

        .arrow-link {
            display: inline-grid;
            place-items: center;
            width: 38px;
            height: 38px;
            border-radius: 14px;
            background: #fff;
            border: 1px solid var(--line);
            color: var(--primary);
            font-weight: 950;
        }

        .news-item:hover .arrow-link {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .side-panel {
            padding: 22px;
            align-self: start;
        }

        .side-panel h3 {
            color: var(--ink);
            font-size: 20px;
            margin-bottom: 12px;
        }

        .search-box {
            display: flex;
            gap: 10px;
            margin: 16px 0;
            padding: 8px;
            border: 1px solid var(--line);
            border-radius: 18px;
            background: #f8fafc;
        }

        .search-box input {
            width: 100%;
            border: 0;
            background: transparent;
            padding: 0 8px;
            outline: none;
            color: var(--ink);
        }

        .search-box button {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--primary);
            color: #fff;
            font-weight: 900;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 11px;
            border-radius: 999px;
            background: #f1f5f9;
            color: var(--muted);
            font-weight: 800;
            font-size: 13px;
            border: 1px solid transparent;
        }

        .tag:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: rgba(29, 78, 216, .12);
        }

        .service-grid {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 24px;
        }

        .large-card {
            padding: 30px;
            min-height: 360px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            background:
                linear-gradient(135deg, rgba(255,255,255,.94), rgba(239,246,255,.94)),
                radial-gradient(circle at 90% 12%, rgba(6, 182, 212, .16), transparent 30%);
        }

        .card {
            padding: 24px;
            transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(29, 78, 216, .16);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 18px;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--primary-soft), var(--accent-soft));
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
        }

        .card h3 {
            color: var(--ink);
            font-size: 21px;
            line-height: 1.25;
            margin-bottom: 10px;
        }

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

        .check-list {
            margin-top: 22px;
            display: grid;
            gap: 12px;
        }

        .check-list li {
            list-style: none;
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--text);
        }

        .check-list li::before {
            content: "✓";
            flex: 0 0 22px;
            width: 22px;
            height: 22px;
            display: grid;
            place-items: center;
            border-radius: 50%;
            background: rgba(22, 163, 74, .1);
            color: var(--success);
            font-weight: 950;
            margin-top: 2px;
        }

        .service-stack {
            display: grid;
            gap: 18px;
        }

        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .topic-card {
            min-height: 190px;
            position: relative;
            overflow: hidden;
        }

        .topic-card::after {
            content: "";
            position: absolute;
            width: 88px;
            height: 88px;
            right: -20px;
            bottom: -20px;
            border-radius: 28px;
            background: rgba(29, 78, 216, .08);
            transform: rotate(18deg);
        }

        .topic-card .tag {
            margin-top: 16px;
            width: fit-content;
        }

        .steps-wrap {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 28px;
            align-items: stretch;
        }

        .step-aside {
            border-radius: var(--radius-lg);
            padding: 28px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--accent));
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .step-aside h2 {
            font-size: clamp(26px, 3vw, 38px);
            line-height: 1.14;
            letter-spacing: -.04em;
            color: #fff;
        }

        .step-aside p {
            margin-top: 14px;
            color: rgba(255,255,255,.82);
        }

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

        .step-item {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 16px;
            align-items: start;
            padding: 20px;
            border-radius: 22px;
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            width: 54px;
            height: 54px;
            border-radius: 18px;
            display: grid;
            place-items: center;
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 950;
            font-size: 18px;
        }

        .step-item h3 {
            color: var(--ink);
            font-size: 18px;
            margin-bottom: 5px;
        }

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

        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
            padding: 16px;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .guarantee {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 18px;
            border-radius: 20px;
            background: #f8fafc;
            border: 1px solid transparent;
        }

        .guarantee:hover {
            border-color: rgba(29, 78, 216, .14);
            background: #fff;
            transform: translateY(-2px);
        }

        .guarantee i {
            width: 38px;
            height: 38px;
            flex: 0 0 38px;
            border-radius: 14px;
            display: grid;
            place-items: center;
            background: var(--accent-soft);
            color: #0e7490;
            font-style: normal;
            font-weight: 950;
        }

        .guarantee b {
            display: block;
            color: var(--ink);
            margin-bottom: 3px;
        }

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

        .rank-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .rank-list {
            padding: 10px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .rank-row {
            display: grid;
            grid-template-columns: 42px 1fr 86px 72px;
            gap: 12px;
            align-items: center;
            padding: 14px;
            border-radius: 16px;
        }

        .rank-row + .rank-row {
            border-top: 1px solid var(--line);
            border-radius: 0;
        }

        .rank-row:hover {
            background: #f8fafc;
        }

        .rank-no {
            width: 34px;
            height: 34px;
            border-radius: 13px;
            display: grid;
            place-items: center;
            background: #eff6ff;
            color: var(--primary);
            font-weight: 950;
        }

        .rank-title {
            color: var(--ink);
            font-weight: 900;
            line-height: 1.35;
        }

        .rank-meta,
        .rank-trend {
            color: var(--muted);
            font-size: 13px;
            font-weight: 800;
            text-align: right;
        }

        .rank-trend.up {
            color: var(--success);
        }

        .app-panel {
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            align-items: stretch;
        }

        .app-copy {
            padding: clamp(28px, 4vw, 46px);
        }

        .app-copy h2 {
            color: var(--ink);
            font-size: clamp(28px, 3.2vw, 44px);
            line-height: 1.15;
            letter-spacing: -.04em;
            margin-bottom: 14px;
        }

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

        .app-features {
            margin: 24px 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }

        .app-feature {
            padding: 14px;
            border-radius: 16px;
            background: #f8fafc;
            border: 1px solid var(--line);
            font-weight: 850;
            color: var(--text);
        }

        .app-visual {
            min-height: 360px;
            background:
                radial-gradient(circle at 20% 20%, rgba(255,255,255,.58), transparent 22%),
                linear-gradient(135deg, var(--primary), #38bdf8);
            display: grid;
            place-items: center;
            padding: 28px;
        }

        .download-card {
            width: min(360px, 100%);
            padding: 22px;
            border-radius: 30px;
            background: rgba(255,255,255,.92);
            box-shadow: 0 28px 70px rgba(15, 23, 42, .22);
        }

        .download-card h3 {
            color: var(--ink);
            font-size: 22px;
            margin-bottom: 12px;
        }

        .download-meter {
            height: 10px;
            border-radius: 999px;
            background: #e2e8f0;
            overflow: hidden;
            margin: 16px 0;
        }

        .download-meter span {
            display: block;
            width: 78%;
            height: 100%;
            border-radius: inherit;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .review-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .review {
            padding: 22px;
            border-radius: var(--radius-md);
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .review p {
            color: var(--text);
            font-size: 15px;
        }

        .review footer {
            margin-top: 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: linear-gradient(135deg, var(--primary-soft), var(--accent-soft));
            color: var(--primary);
            font-weight: 950;
        }

        .review b {
            color: var(--ink);
            display: block;
        }

        .review small {
            color: var(--muted);
            font-weight: 700;
        }

        .faq-wrap {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 26px;
            align-items: start;
        }

        .faq-lead {
            position: sticky;
            top: 100px;
            padding: 28px;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .faq-lead h2 {
            color: var(--ink);
            font-size: clamp(26px, 3vw, 40px);
            line-height: 1.18;
            letter-spacing: -.04em;
            margin-bottom: 12px;
        }

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

        .faq-item {
            padding: 22px;
        }

        .faq-item h3 {
            color: var(--ink);
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 24px;
        }

        .about-card {
            padding: 30px;
        }

        .about-card h2 {
            color: var(--ink);
            font-size: clamp(26px, 3vw, 42px);
            line-height: 1.16;
            letter-spacing: -.04em;
            margin-bottom: 14px;
        }

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

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

        .data-card {
            padding: 20px;
            border-radius: 20px;
            background: #f8fafc;
            border: 1px solid var(--line);
        }

        .data-card strong {
            display: block;
            color: var(--primary);
            font-size: 30px;
            line-height: 1.1;
            letter-spacing: -.03em;
        }

        .data-card span {
            display: block;
            margin-top: 6px;
            color: var(--muted);
            font-weight: 800;
            font-size: 13px;
        }

        .cta-band {
            margin-top: 34px;
            padding: 30px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, #0f172a, #1d4ed8);
            color: #fff;
            display: flex;
            justify-content: space-between;
            gap: 24px;
            align-items: center;
            box-shadow: var(--shadow-lg);
        }

        .cta-band h2 {
            font-size: clamp(24px, 3vw, 38px);
            line-height: 1.15;
            letter-spacing: -.04em;
            color: #fff;
        }

        .cta-band p {
            margin-top: 8px;
            color: rgba(255,255,255,.76);
        }

        .site-footer {
            padding: 46px 0 30px;
            background: #0f172a;
            color: rgba(255,255,255,.72);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 24px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(255,255,255,.12);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-weight: 950;
            margin-bottom: 14px;
        }

        .footer-brand .brand-mark {
            box-shadow: none;
        }

        .footer-note {
            max-width: 720px;
            color: rgba(255,255,255,.66);
        }

        .footer-links {
            display: flex;
            justify-content: flex-end;
            align-items: flex-start;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-links a {
            padding: 9px 12px;
            border-radius: 999px;
            background: rgba(255,255,255,.08);
            border: 1px solid rgba(255,255,255,.1);
            color: rgba(255,255,255,.78);
            font-weight: 800;
            font-size: 13px;
        }

        .footer-links a:hover {
            background: rgba(255,255,255,.14);
            color: #fff;
        }

        .copyright {
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            color: rgba(255,255,255,.52);
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .hero-inner,
            .service-grid,
            .steps-wrap,
            .app-panel,
            .faq-wrap,
            .about-grid,
            .footer-top {
                grid-template-columns: 1fr;
            }

            .progress-panel {
                max-width: 680px;
            }

            .topic-grid,
            .guarantee-strip {
                grid-template-columns: repeat(2, 1fr);
            }

            .rank-panel,
            .review-wall {
                grid-template-columns: 1fr;
            }

            .faq-lead {
                position: static;
            }

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

        @media (max-width: 768px) {
            :root {
                --nav-height: auto;
            }

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

            .site-header {
                position: sticky;
            }

            .nav-shell {
                min-height: 72px;
                grid-template-columns: 42px 1fr 42px;
                gap: 10px;
            }

            .nav-left {
                order: 1;
            }

            .brand {
                order: 2;
                justify-self: center;
                max-width: 100%;
            }

            .brand-text strong {
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .nav-right {
                order: 3;
            }

            .mobile-menu-btn {
                display: inline-flex;
            }

            .nav-link {
                display: none;
            }

            .header-chip {
                display: none;
            }

            .hero {
                padding-top: 24px;
            }

            .hero-stage,
            .hero-inner {
                min-height: auto;
            }

            .hero-inner {
                padding: 28px;
                gap: 26px;
            }

            h1 {
                font-size: clamp(34px, 11vw, 52px);
            }

            .progress-body {
                grid-template-columns: 1fr;
                justify-items: center;
            }

            .support-line {
                align-items: flex-start;
                flex-direction: column;
            }

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

            .news-item {
                grid-template-columns: 72px 1fr;
            }

            .news-item .arrow-link {
                grid-column: 2;
                justify-self: start;
            }

            .app-features,
            .data-grid {
                grid-template-columns: 1fr;
            }

            .cta-band {
                align-items: flex-start;
                flex-direction: column;
            }

            .rank-row {
                grid-template-columns: 36px 1fr;
            }

            .rank-meta,
            .rank-trend {
                text-align: left;
                grid-column: 2;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 60px 0;
            }

            .section-tight {
                padding: 44px 0;
            }

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

            .hero-stage {
                border-radius: 24px;
            }

            .hero-inner {
                padding: 22px;
            }

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

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

            .metric-pill {
                min-width: 0;
            }

            .progress-panel {
                padding: 16px;
                border-radius: 22px;
            }

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

            .topic-grid,
            .guarantee-strip {
                grid-template-columns: 1fr;
            }

            .news-item {
                grid-template-columns: 1fr;
                gap: 10px;
                padding: 16px;
            }

            .news-item .arrow-link {
                grid-column: auto;
            }

            .news-date {
                width: 86px;
            }

            .card,
            .large-card,
            .about-card,
            .faq-lead,
            .faq-item {
                padding: 20px;
            }

            .step-item {
                grid-template-columns: 1fr;
            }

            .app-visual {
                min-height: 280px;
                padding: 18px;
            }

            .copyright {
                flex-direction: column;
            }
        }