/* roulang page: index */
:root {
            --color-primary: #2A5C8A;
            --color-primary-dark: #1E4A6B;
            --color-primary-light: #3A6FA0;
            --color-accent: #C8A96E;
            --color-accent-soft: #D4B896;
            --color-bg: #F7F9FC;
            --color-bg-alt: #EEF2F8;
            --color-white: #FFFFFF;
            --color-text: #1F2A3A;
            --color-text-secondary: #5F6B7A;
            --color-text-muted: #94A3B8;
            --color-border: #E2E8F0;
            --color-border-light: #EDF1F7;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 40px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-nav: 0 2px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --section-padding: 100px 0;
            --section-padding-mobile: 60px 0;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-text);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ========== 浮动 Dock 导航 ========== */
        .nav-dock {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: auto;
            max-width: 720px;
            width: calc(100% - 48px);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-nav);
            padding: 0 24px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: box-shadow var(--transition-smooth), background var(--transition-smooth);
        }
        .nav-dock.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }

        .nav-logo {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-primary-dark);
            white-space: nowrap;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: var(--color-primary-dark);
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
            background: rgba(42, 92, 138, 0.06);
            text-decoration: none;
        }
        .nav-links a.active {
            font-weight: 600;
            color: var(--color-primary-dark);
        }

        .nav-cta-btn {
            font-size: 14px;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: var(--radius-pill);
            background: var(--color-primary);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(42, 92, 138, 0.3);
        }
        .nav-cta-btn:active {
            background: var(--color-primary-dark);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            flex-shrink: 0;
            background: transparent;
            border: none;
        }
        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: 88px;
            left: 24px;
            right: 24px;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }
        .nav-mobile-menu.open {
            display: flex;
        }
        .nav-mobile-menu a {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            padding: 14px 20px;
            border-radius: var(--radius-lg);
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            background: rgba(42, 92, 138, 0.06);
            color: var(--color-primary);
            text-decoration: none;
        }
        .nav-mobile-menu .nav-cta-btn {
            text-align: center;
            margin-top: 8px;
            border-radius: var(--radius-lg);
            padding: 14px 20px;
            font-size: 16px;
        }

        /* ========== Hero 众筹预热风格 ========== */
        .hero {
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
            background: var(--color-bg);
        }
        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200, 169, 110, 0.1);
            color: var(--color-accent);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            width: fit-content;
            letter-spacing: 0.5px;
        }
        .hero-badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 480px;
        }
        .hero-progress-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 16px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            width: fit-content;
        }
        .hero-progress-ring {
            position: relative;
            width: 72px;
            height: 72px;
            flex-shrink: 0;
        }
        .hero-progress-ring svg {
            transform: rotate(-90deg);
        }
        .hero-progress-ring .bg-circle {
            fill: none;
            stroke: var(--color-border-light);
            stroke-width: 6;
        }
        .hero-progress-ring .fg-circle {
            fill: none;
            stroke: var(--color-primary);
            stroke-width: 6;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease;
        }
        .hero-progress-text {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary-dark);
        }
        .hero-progress-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-progress-info .progress-label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .hero-progress-info .progress-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
        }
        .hero-progress-info .progress-value span {
            color: #e0533d;
            font-size: 16px;
            font-weight: 600;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            background: var(--color-primary);
            color: #fff;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 2px solid var(--color-primary);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 6px 20px rgba(42, 92, 138, 0.3);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .btn-outline:hover {
            background: rgba(42, 92, 138, 0.06);
            color: var(--color-primary-dark);
            text-decoration: none;
            border-color: var(--color-primary-dark);
        }
        .hero-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hero-right-bg {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            background: var(--color-bg-alt);
        }
        .hero-right-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-right-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(30, 74, 107, 0.25) 100%);
            pointer-events: none;
        }
        .hero-tier-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }
        .hero-tier-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 16px 14px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .hero-tier-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent-soft);
        }
        .hero-tier-card .tier-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .hero-tier-card .tier-desc {
            font-size: 12px;
            color: var(--color-text-muted);
            line-height: 1.4;
        }
        .hero-tier-card .tier-icon {
            font-size: 24px;
            margin-bottom: 6px;
            display: block;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background: var(--color-white);
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        /* ========== 分类入口 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            border: 1px solid var(--color-border-light);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        .category-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-accent-soft);
            text-decoration: none;
        }
        .category-card .cat-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(42, 92, 138, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--color-primary);
        }
        .category-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
        }
        .category-card p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== 资源列表 ========== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .resource-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .resource-card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .resource-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .resource-card:hover .resource-card-img img {
            transform: scale(1.04);
        }
        .resource-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .resource-card-body h3 {
            font-size: 20px;
            font-weight: 600;
        }
        .resource-card-body p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .resource-card-body .resource-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            background: rgba(200, 169, 110, 0.12);
            color: var(--color-accent);
            width: fit-content;
        }

        /* ========== 客户证言 ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 16px;
            border: 1px solid var(--color-border-light);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .testimonial-quote {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            font-style: italic;
            position: relative;
            padding-left: 20px;
        }
        .testimonial-quote::before {
            content: '"';
            position: absolute;
            left: 0;
            top: -4px;
            font-size: 36px;
            color: var(--color-accent-soft);
            font-weight: 700;
            line-height: 1;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            overflow: hidden;
            flex-shrink: 0;
        }
        .testimonial-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .testimonial-info .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }
        .testimonial-info .author-role {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ========== 资讯区 ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 16px;
            text-decoration: none;
            color: inherit;
        }
        .news-item:hover {
            color: var(--color-primary);
            text-decoration: none;
            padding-left: 8px;
        }
        .news-item h4 {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.5;
            flex: 1;
            transition: color var(--transition-fast);
        }
        .news-item:hover h4 {
            color: var(--color-primary);
        }
        .news-item .news-date {
            font-size: 13px;
            color: var(--color-text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-sidebar {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
        }
        .news-sidebar h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .news-sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-sidebar-list a {
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 10px 14px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            text-decoration: none;
            display: block;
        }
        .news-sidebar-list a:hover {
            background: rgba(42, 92, 138, 0.05);
            color: var(--color-primary);
            text-decoration: none;
        }
        .news-sidebar-list a .side-num {
            display: inline-block;
            width: 24px;
            height: 24px;
            line-height: 24px;
            text-align: center;
            background: var(--color-bg-alt);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-primary);
            margin-right: 8px;
        }

        /* ========== 平台保障 ========== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guarantee-item {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .guarantee-item .g-icon {
            font-size: 32px;
            color: var(--color-primary);
        }
        .guarantee-item h4 {
            font-size: 15px;
            font-weight: 600;
        }
        .guarantee-item p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.5;
        }
        .guarantee-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 32px;
        }
        .guarantee-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            background: rgba(42, 92, 138, 0.06);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary-dark);
        }
        .guarantee-badge .badge-check {
            color: #27ae60;
            font-weight: 700;
        }

        /* ========== 热门专题 ========== */
        .topic-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            padding: 20px 0;
        }
        .topic-tag {
            display: inline-block;
            padding: 10px 20px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            background: var(--color-white);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
        }
        .topic-tag:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(42, 92, 138, 0.25);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .topic-tag.hot {
            background: rgba(200, 169, 110, 0.1);
            border-color: var(--color-accent-soft);
            color: var(--color-accent);
            font-weight: 600;
        }
        .topic-tag.hot:hover {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        /* ========== 版本更新 ========== */
        .changelog-list {
            max-width: 700px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 32px;
        }
        .changelog-list::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }
        .changelog-item {
            position: relative;
            padding: 20px 0 20px 28px;
            border-bottom: 1px solid var(--color-border-light);
        }
        .changelog-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 26px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid var(--color-white);
            box-shadow: 0 0 0 3px var(--color-border-light);
        }
        .changelog-item .cl-version {
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .changelog-item .cl-date {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }
        .changelog-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .changelog-item .cl-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-right: 6px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .cl-tag.new {
            background: #e8f5e9;
            color: #2e7d32;
        }
        .cl-tag.improve {
            background: #e3f2fd;
            color: #1565c0;
        }
        .cl-tag.fix {
            background: #fff3e0;
            color: #e65100;
        }

        /* ========== 下载引导 / CTA ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-content {
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            background: #fff;
            color: var(--color-primary-dark);
            transition: all var(--transition-fast);
            text-decoration: none;
            border: 2px solid #fff;
        }
        .btn-cta-white:hover {
            background: transparent;
            color: #fff;
            text-decoration: none;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }
        .btn-cta-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .btn-cta-outline-white:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            text-decoration: none;
            color: #fff;
        }
        .cta-btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-bg-alt);
            padding: 60px 0 32px;
            color: var(--color-text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary-dark);
            margin-bottom: 12px;
            display: inline-block;
            text-decoration: none;
        }
        .footer-logo:hover {
            text-decoration: none;
            color: var(--color-primary-dark);
        }
        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            margin-bottom: 8px;
            color: var(--color-text-secondary);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== FAQ 折叠面板 ========== */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: left;
            background: transparent;
            border: none;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-fast);
            font-size: 12px;
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-right {
                order: -1;
            }
            .hero-right-bg {
                aspect-ratio: 16/9;
                max-height: 360px;
            }
            .hero h1 {
                font-size: 38px;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resource-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .section-header h2 {
                font-size: 30px;
            }
            .hero-tier-cards {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-dock {
                padding: 0 16px;
                height: 50px;
                top: 12px;
                width: calc(100% - 32px);
            }
            .nav-logo {
                font-size: 15px;
            }
            .nav-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            .hero {
                padding: 110px 0 50px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-tier-cards {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .hero-progress-wrap {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                width: 100%;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
                text-align: center;
            }
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-card {
                padding: 24px 16px;
            }
            .resource-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .guarantee-item {
                padding: 18px 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn-cta-white,
            .btn-cta-outline-white {
                width: 100%;
                justify-content: center;
            }
            .changelog-list {
                padding-left: 24px;
            }
            .changelog-list::before {
                left: 7px;
            }
            .changelog-item {
                padding-left: 20px;
            }
            .changelog-item::before {
                left: -21px;
                width: 8px;
                height: 8px;
            }
            .topic-tag {
                font-size: 13px;
                padding: 8px 16px;
            }
            .nav-mobile-menu {
                top: 76px;
                left: 16px;
                right: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .hero-progress-ring {
                width: 56px;
                height: 56px;
            }
            .hero-progress-text {
                font-size: 16px;
            }
            .hero-progress-info .progress-value {
                font-size: 18px;
            }
            .testimonial-card {
                padding: 20px 16px;
            }
            .resource-card-body {
                padding: 16px;
            }
            .nav-dock {
                border-radius: 28px;
            }
        }