/* roulang page: index */
:root {
            --brand: #337eff;
            --brand-dark: #174be1;
            --brand-deep: #152457;
            --surface: #ffffff;
            --ink: #0f1e3d;
            --muted: #5b6b84;
            --line: #e6ecf5;
            --bg: #f6f9fc;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-card: 0 1px 3px rgba(15,30,61,0.04), 0 6px 24px rgba(30,95,245,0.06);
            --shadow-cardHover: 0 4px 12px rgba(15,30,61,0.08), 0 18px 44px rgba(30,95,245,0.12);
            --shadow-stage: 0 8px 32px rgba(15,30,61,0.10), 0 24px 64px rgba(30,95,245,0.08);
            --transition-base: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background-color: var(--bg);
            color: var(--ink);
            line-height: 1.7;
            font-size: 16px;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(51,126,255,0.45);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition-base);
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15,30,61,0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-logo .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #337eff 0%, #174be1 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.05rem;
            box-shadow: 0 4px 12px rgba(51,126,255,0.32);
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.93rem;
            font-weight: 600;
            color: var(--muted);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--brand);
            background: var(--brand-50);
        }
        .nav-links a.active {
            color: var(--brand);
            background: var(--brand-50);
            box-shadow: inset 0 0 0 1px rgba(51,126,255,0.2);
        }
        .nav-location {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: var(--surface);
            border: 1px solid var(--line);
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
            position: relative;
        }
        .nav-location:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: 0 2px 12px rgba(51,126,255,0.10);
        }
        .nav-location .fa-location-dot {
            color: var(--brand);
        }
        .nav-burger {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: var(--surface);
            border: 1px solid var(--line);
            font-size: 1.2rem;
            color: var(--ink);
            cursor: pointer;
            transition: var(--transition-base);
        }
        .nav-burger:hover {
            border-color: var(--brand);
            color: var(--brand);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 8px;
            padding: 16px 24px 20px;
            background: var(--surface);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 20px 40px rgba(15,30,61,0.08);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--ink);
            transition: var(--transition-base);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--brand);
            background: var(--brand-50);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 14px;
            font-weight: 700;
            font-size: 0.98rem;
            line-height: 1.4;
            transition: var(--transition-base);
            white-space: nowrap;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, #337eff 0%, #174be1 100%);
            color: #fff;
            box-shadow: 0 6px 20px rgba(51,126,255,0.32);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(51,126,255,0.42);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(51,126,255,0.28);
        }
        .btn-outline {
            background: var(--surface);
            color: var(--ink);
            border: 1.5px solid var(--line);
            box-shadow: 0 1px 4px rgba(15,30,61,0.04);
        }
        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: var(--brand-50);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(51,126,255,0.12);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-ghost {
            color: var(--brand);
            background: rgba(51,126,255,0.08);
        }
        .btn-ghost:hover {
            background: rgba(51,126,255,0.16);
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--brand-dark);
            box-shadow: 0 4px 16px rgba(15,30,61,0.12);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15,30,61,0.18);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.86rem;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 1.05rem;
            border-radius: 16px;
        }
        .btn-block {
            width: 100%;
        }

        /* Section */
        .section {
            padding: 72px 0;
        }
        .section-sm {
            padding: 36px 0;
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--brand);
            background: rgba(51,126,255,0.08);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 640px;
            line-height: 1.8;
        }
        .section-desc.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* Card */
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--line);
            transition: var(--transition-base);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-cardHover);
            transform: translateY(-4px);
        }
        .card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-title {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .card:hover .card-title {
            color: var(--brand);
        }
        .card-text {
            font-size: 0.92rem;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--muted);
            margin-top: 14px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.76rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            line-height: 1.5;
            white-space: nowrap;
        }
        .badge-blue {
            background: rgba(51,126,255,0.10);
            color: var(--brand-dark);
        }
        .badge-green {
            background: rgba(34,197,94,0.12);
            color: #15803d;
        }
        .badge-orange {
            background: rgba(249,115,22,0.12);
            color: #c2410c;
        }
        .badge-purple {
            background: rgba(168,85,247,0.12);
            color: #7e22ce;
        }
        .badge-gray {
            background: #f1f5f9;
            color: #475569;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 72px 0 80px;
            background: linear-gradient(175deg, #eef6ff 0%, #ffffff 35%, #f6f9fc 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.07;
            pointer-events: none;
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-stage-wrap {
            display: flex;
            align-items: center;
            gap: 36px;
            flex-wrap: wrap;
        }
        .hero-side {
            flex: 0 0 220px;
            display: none;
            flex-direction: column;
            gap: 18px;
        }
        .hero-side.visible {
            display: flex;
        }
        .hero-value-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.5;
        }
        .hero-value-item i {
            color: var(--brand);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .hero-stage {
            flex: 1;
            min-width: 0;
            text-align: center;
        }
        .hero-stage-card {
            background: var(--surface);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-stage);
            border: 1px solid var(--line);
            padding: 18px;
            display: inline-block;
            width: 100%;
            max-width: 660px;
            margin: 0 auto;
        }
        .hero-stage-inner {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fafcff;
            border: 1px solid #e8f0fa;
        }
        .hero-stage-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 18px;
            border-bottom: 1px solid var(--line);
            background: #fff;
        }
        .hero-stage-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--ink);
        }
        .hero-stage-title i {
            color: var(--brand);
        }
        .hero-stage-search {
            font-size: 0.78rem;
            color: var(--muted);
            background: #f6f9fc;
            border-radius: 999px;
            padding: 4px 12px;
            border: 1px solid var(--line);
        }
        .hero-stage-body {
            padding: 18px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .hero-stage-post {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            background: #fff;
            border-radius: 14px;
            border: 1px solid #edf2f9;
            text-align: left;
            transition: var(--transition-base);
        }
        .hero-stage-post:hover {
            border-color: var(--brand);
            box-shadow: 0 2px 8px rgba(51,126,255,0.08);
        }
        .hero-stage-post img {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .hero-stage-post .post-info {
            flex: 1;
            min-width: 0;
        }
        .hero-stage-post .post-info strong {
            display: block;
            font-size: 0.85rem;
            color: var(--ink);
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hero-stage-post .post-info span {
            font-size: 0.74rem;
            color: var(--muted);
        }
        .hero-stage-post .post-tag {
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 999px;
            background: rgba(51,126,255,0.08);
            color: var(--brand);
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .hero-stage-footer {
            display: flex;
            justify-content: space-around;
            padding: 10px 0 4px;
            border-top: 1px solid var(--line);
            font-size: 0.76rem;
            color: var(--muted);
            font-weight: 600;
        }
        .hero-stage-footer span.active {
            color: var(--brand);
        }

        .hero h1 {
            font-size: clamp(2rem, 4.2vw, 3.1rem);
            font-weight: 800;
            color: var(--ink);
            line-height: 1.25;
            margin: 0 0 16px;
            letter-spacing: 0.01em;
        }
        .hero-sub {
            font-size: 1.05rem;
            color: var(--muted);
            line-height: 1.85;
            max-width: 680px;
            margin: 0 auto 24px;
        }
        .hero-cta-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .hero-stats {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 28px;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat strong {
            display: block;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--ink);
        }
        .hero-stat span {
            font-size: 0.82rem;
            color: var(--muted);
        }

        /* Trust bar */
        .trust-bar {
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 20px 0;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            align-items: center;
            text-align: center;
        }
        .trust-item {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--ink);
        }
        .trust-item i {
            color: var(--brand);
            font-size: 1.2rem;
        }

        /* Story section */
        .story-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .story-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-cardHover);
            border: 1px solid var(--line);
            position: relative;
        }
        .story-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .story-image .image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            background: linear-gradient(0deg, rgba(15,30,61,0.75) 0%, transparent 100%);
            color: #fff;
        }
        .story-image .image-overlay strong {
            display: block;
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .story-image .image-overlay span {
            font-size: 0.85rem;
            opacity: 0.85;
        }
        .story-timeline {
            display: flex;
            flex-direction: column;
            gap: 22px;
            margin-top: 24px;
        }
        .story-timeline-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .story-timeline-dot {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--brand-50);
            border: 2px solid var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 0.78rem;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .story-timeline-content strong {
            display: block;
            font-size: 1rem;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .story-timeline-content p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--line);
            padding: 26px 24px;
            transition: var(--transition-base);
            text-align: left;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-cardHover);
            transform: translateY(-4px);
            border-color: rgba(51,126,255,0.25);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, #eef6ff 0%, #d9eaff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--brand);
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Stats band */
        .stats-band {
            background: linear-gradient(135deg, #152457 0%, #1a388f 50%, #174be1 100%);
            border-radius: var(--radius-xl);
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 32px;
            box-shadow: 0 12px 40px rgba(21,36,87,0.28);
        }
        .stats-band .stat-item {
            text-align: center;
            color: #fff;
        }
        .stats-band .stat-item strong {
            display: block;
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: 0.02em;
        }
        .stats-band .stat-item span {
            font-size: 0.88rem;
            opacity: 0.8;
        }

        /* Review bubbles */
        .review-bubble-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .review-bubble {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--line);
            padding: 24px;
            transition: var(--transition-base);
            position: relative;
        }
        .review-bubble::before {
            content: '';
            position: absolute;
            top: 16px;
            left: 24px;
            font-size: 2.5rem;
            color: rgba(51,126,255,0.12);
            font-family: serif;
            line-height: 1;
        }
        .review-bubble:hover {
            box-shadow: var(--shadow-cardHover);
            transform: translateY(-4px);
        }
        .review-bubble .review-text {
            font-size: 0.92rem;
            color: var(--ink);
            line-height: 1.75;
            margin: 0 0 16px;
            position: relative;
            z-index: 1;
        }
        .review-bubble .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--muted);
        }
        .review-bubble .review-author .avatar {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, #d9eaff 0%, #bcdbff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--brand-dark);
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .review-bubble .review-author strong {
            display: block;
            color: var(--ink);
            font-size: 0.84rem;
        }

        /* News section */
        .news-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            padding: 14px 18px;
            transition: var(--transition-base);
            cursor: pointer;
        }
        .news-item:hover {
            border-color: rgba(51,126,255,0.3);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .news-item .news-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--brand-50);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            flex-shrink: 0;
            font-size: 0.95rem;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-content strong {
            display: block;
            font-size: 0.94rem;
            font-weight: 600;
            color: var(--ink);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: var(--transition-base);
        }
        .news-item:hover .news-content strong {
            color: var(--brand);
        }
        .news-item .news-content span {
            font-size: 0.78rem;
            color: var(--muted);
        }
        .news-item .news-tag {
            flex-shrink: 0;
        }
        .news-sidebar {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 22px;
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-sidebar h3 i {
            color: var(--brand);
        }
        .news-sidebar .sidebar-card {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            transition: var(--transition-base);
        }
        .news-sidebar .sidebar-card:last-child {
            border-bottom: none;
        }
        .news-sidebar .sidebar-card:hover strong {
            color: var(--brand);
        }
        .news-sidebar .sidebar-card img {
            width: 64px;
            height: 52px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-sidebar .sidebar-card strong {
            display: block;
            font-size: 0.84rem;
            color: var(--ink);
            font-weight: 600;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .news-sidebar .sidebar-card span {
            font-size: 0.74rem;
            color: var(--muted);
        }

        /* Group buy */
        .group-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .group-status {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 28px;
            text-align: center;
        }
        .group-status .group-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .group-status p {
            font-size: 0.95rem;
            color: var(--muted);
            margin: 0 0 16px;
        }
        .group-status .progress-bar {
            width: 100%;
            height: 8px;
            background: #eef2f8;
            border-radius: 999px;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .group-status .progress-bar .fill {
            height: 100%;
            background: linear-gradient(90deg, #337eff, #174be1);
            border-radius: 999px;
            transition: width 1.2s ease;
        }
        .group-status .countdown {
            font-size: 0.85rem;
            color: var(--muted);
            font-weight: 600;
        }
        .group-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .group-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            padding: 14px 16px;
            transition: var(--transition-base);
        }
        .group-item:hover {
            border-color: rgba(51,126,255,0.3);
            box-shadow: var(--shadow-card);
            transform: translateX(4px);
        }
        .group-item img {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .group-item .group-info {
            flex: 1;
            min-width: 0;
        }
        .group-item .group-info strong {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--ink);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .group-item .group-info span {
            font-size: 0.78rem;
            color: var(--muted);
        }
        .group-item .group-count {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--brand);
            white-space: nowrap;
        }

        /* Guide */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .guide-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            padding: 22px 18px;
            text-align: center;
            transition: var(--transition-base);
        }
        .guide-item:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
            border-color: rgba(51,126,255,0.25);
        }
        .guide-item .guide-step {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            margin: 0 auto 12px;
        }
        .guide-item h4 {
            font-size: 0.94rem;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 6px;
        }
        .guide-item p {
            font-size: 0.82rem;
            color: var(--muted);
            line-height: 1.6;
            margin: 0;
        }

        /* Changelog */
        .changelog {
            background: var(--surface);
            border-radius: var(--radius-xl);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 32px;
        }
        .changelog-item {
            display: flex;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--line);
        }
        .changelog-item:last-child {
            border-bottom: none;
        }
        .changelog-version {
            flex-shrink: 0;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--brand);
            background: rgba(51,126,255,0.08);
            border-radius: 8px;
            padding: 4px 10px;
            height: fit-content;
            white-space: nowrap;
        }
        .changelog-item .changelog-content strong {
            display: block;
            font-size: 0.92rem;
            color: var(--ink);
            margin-bottom: 3px;
        }
        .changelog-item .changelog-content p {
            font-size: 0.85rem;
            color: var(--muted);
            line-height: 1.65;
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(51,126,255,0.25);
        }
        .faq-item.open {
            border-color: rgba(51,126,255,0.4);
            box-shadow: var(--shadow-cardHover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--ink);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: var(--transition-base);
            gap: 12px;
        }
        .faq-question:hover {
            color: var(--brand);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.75;
            margin: 0;
        }

        /* CTA */
        .cta-wrap {
            background: linear-gradient(135deg, #152457 0%, #174be1 60%, #337eff 100%);
            border-radius: var(--radius-xl);
            padding: 52px 44px;
            text-align: center;
            box-shadow: 0 16px 48px rgba(21,36,87,0.32);
            position: relative;
            overflow: hidden;
        }
        .cta-wrap::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-4.jpg') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-wrap > * {
            position: relative;
            z-index: 1;
        }
        .cta-wrap h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.35;
        }
        .cta-wrap p {
            font-size: 1rem;
            color: rgba(255,255,255,0.8);
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-form {
            display: flex;
            align-items: center;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 520px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1;
            min-width: 240px;
            padding: 14px 20px;
            border-radius: 14px;
            border: 1.5px solid rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.12);
            color: #fff;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: var(--transition-base);
            backdrop-filter: blur(8px);
        }
        .cta-form input::placeholder {
            color: rgba(255,255,255,0.55);
        }
        .cta-form input:focus {
            background: rgba(255,255,255,0.2);
            border-color: rgba(255,255,255,0.6);
            box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
        }
        .cta-form .btn-white {
            flex-shrink: 0;
        }
        .cta-privacy {
            font-size: 0.76rem;
            color: rgba(255,255,255,0.55);
            margin-top: 14px;
        }

        /* Footer */
        .site-footer {
            background: #0d1a38;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
            border-top: 1px solid #1e2d50;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid #1e2d50;
        }
        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .nav-logo .logo-mark {
            background: linear-gradient(135deg, #337eff 0%, #1e5ff5 100%);
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255,255,255,0.6);
            max-width: 340px;
        }
        .footer-col h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 0.86rem;
            color: rgba(255,255,255,0.6);
            padding: 6px 0;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-bottom {
            padding-top: 22px;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition-base);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-side {
                flex: 0 0 160px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-bubble-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .group-grid {
                grid-template-columns: 1fr;
            }
            .story-wrap {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .story-image img {
                height: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                height: 58px;
            }
            .nav-links {
                display: none;
            }
            .nav-location {
                display: flex;
            }
            .nav-burger {
                display: flex;
            }
            .hero {
                padding: 48px 0 56px;
            }
            .hero-stage-wrap {
                flex-direction: column;
                gap: 24px;
            }
            .hero-side {
                display: none !important;
            }
            .hero-stage-card {
                padding: 12px;
                border-radius: var(--radius-lg);
            }
            .hero-stage-body {
                padding: 12px;
                gap: 8px;
            }
            .hero-stage-post img {
                width: 34px;
                height: 34px;
                border-radius: 8px;
            }
            .hero-stage-post .post-info strong {
                font-size: 0.78rem;
            }
            .hero-stage-post .post-info span {
                font-size: 0.68rem;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .review-bubble-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .changelog {
                padding: 20px;
            }
            .changelog-item {
                flex-direction: column;
                gap: 8px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer p {
                padding: 0 16px 16px;
                font-size: 0.85rem;
            }
            .cta-wrap {
                padding: 36px 22px;
            }
            .cta-wrap h2 {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat strong {
                font-size: 1.2rem;
            }
            .stats-band {
                padding: 30px 20px;
                gap: 24px;
            }
            .stats-band .stat-item strong {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo .logo-mark {
                width: 32px;
                height: 32px;
                border-radius: 10px;
                font-size: 0.9rem;
            }
            .nav-location {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.88rem;
                border-radius: 12px;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.95rem;
            }
            .btn-sm {
                padding: 7px 13px;
                font-size: 0.8rem;
            }
            .hero h1 {
                font-size: 1.4rem;
            }
            .hero-sub {
                font-size: 0.86rem;
                line-height: 1.7;
            }
            .hero-stage-post {
                padding: 8px 10px;
                gap: 8px;
            }
            .hero-stage-footer {
                font-size: 0.68rem;
                flex-wrap: wrap;
                gap: 6px;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .trust-item {
                font-size: 0.78rem;
                gap: 6px;
                justify-content: flex-start;
            }
            .trust-item i {
                font-size: 1rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .news-item {
                padding: 10px 12px;
                gap: 10px;
            }
            .news-item .news-icon {
                width: 32px;
                height: 32px;
                border-radius: 8px;
                font-size: 0.8rem;
            }
            .news-item .news-content strong {
                font-size: 0.84rem;
            }
            .news-sidebar {
                padding: 16px;
            }
            .news-sidebar .sidebar-card img {
                width: 52px;
                height: 42px;
            }
            .group-status {
                padding: 20px 16px;
            }
            .group-status .group-number {
                font-size: 2.2rem;
            }
            .guide-item {
                padding: 16px 12px;
            }
            .cta-form input {
                min-width: 100%;
                font-size: 0.9rem;
            }
            .cta-form .btn-white {
                width: 100%;
            }
            .cta-privacy {
                font-size: 0.7rem;
            }
        }