/* ========================================
           SafeW 全站样式 — 深蓝翡翠主题
           ======================================== */

        :root {
            --bg-primary: #0b1120;
            --bg-secondary: #0f1729;
            --bg-card: rgba(15, 23, 42, 0.88);
            --bg-card-hover: rgba(20, 30, 55, 0.95);
            --text-primary: #f0f4f8;
            --text-secondary: #b8c4d0;
            --text-muted: #7a8a9e;
            --accent-primary: #00d4aa;
            --accent-primary-hover: #00e6ba;
            --accent-secondary: #38bdf8;
            --accent-gold: #f5c542;
            --accent-danger: #f87171;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 212, 170, 0.45);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 212, 170, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
            --container-width: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent-primary);
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ---------- 按钮 ---------- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background: var(--accent-primary);
            color: #0b1120;
            border-color: var(--accent-primary);
        }
        .btn-primary:hover {
            background: var(--accent-primary-hover);
            border-color: var(--accent-primary-hover);
            color: #0b1120;
            box-shadow: 0 8px 24px rgba(0, 212, 170, 0.3);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-primary);
            border-color: rgba(0, 212, 170, 0.5);
        }
        .btn-secondary:hover {
            background: rgba(0, 212, 170, 0.1);
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.875rem;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }

        /* ---------- 头部 ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 17, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 17, 32, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            flex-shrink: 0;
        }
        .logo-link img {
            width: 40px;
            height: 40px;
            border-radius: 8px;
        }
        .logo-link span {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links li a:hover,
        .nav-links li a[aria-current='page'] {
            color: var(--accent-primary);
            background: rgba(0, 212, 170, 0.08);
        }
        .nav-links li a[aria-current='page']::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 8px;
            flex-shrink: 0;
        }

        /* 移动端菜单 - 纯CSS方案 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .menu-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* 隐藏的checkbox控制菜单 */
        #nav-checkbox {
            display: none;
        }

        @media (max-width: 992px) {
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(11, 17, 32, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px 24px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                max-height: calc(100vh - var(--header-height));
                overflow-y: auto;
                gap: 8px;
            }
            #nav-checkbox:checked~.main-nav {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links {
                flex-direction: column;
                gap: 2px;
            }
            .nav-links li a {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
            }
            .nav-cta .btn {
                width: 100%;
            }
        }

        /* ---------- Hero区域 ---------- */
        .hero {
            position: relative;
            padding: calc(var(--header-height) + 60px) 0 80px;
            background: linear-gradient(180deg, #0b1120 0%, #0f1b2e 40%, #0b1120 100%);
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 170, 0.1);
            border: 1px solid rgba(0, 212, 170, 0.25);
            color: var(--accent-primary);
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
            color: var(--text-primary);
        }

        .gradient-text {
            background: linear-gradient(135deg, #00d4aa 0%, #38bdf8 50%, #f5c542 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ---------- 数据指标 ---------- */
        .section {
            padding: 80px 0;
        }

        .section+.section {
            padding-top: 40px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
        }

        /* ---------- 区块标题 ---------- */
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            color: var(--accent-primary);
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
            background: rgba(0, 212, 170, 0.08);
            padding: 4px 14px;
            border-radius: 100px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
        }

        /* ---------- 功能卡片 ---------- */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            font-size: 2.4rem;
            margin-bottom: 16px;
            display: inline-block;
        }
        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ---------- 平台卡片 ---------- */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .platform-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 16px;
            text-align: center;
            transition: all var(--transition);
        }
        .platform-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .platform-icon {
            font-size: 2rem;
            margin-bottom: 10px;
        }
        .platform-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-secondary);
        }

        /* ---------- 部署方案对比 ---------- */
        .deploy-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            max-width: 900px;
            margin: 0 auto;
        }
        .deploy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            transition: all var(--transition);
            position: relative;
        }
        .deploy-card.featured {
            border-color: rgba(0, 212, 170, 0.5);
            box-shadow: 0 0 40px rgba(0, 212, 170, 0.08);
        }
        .deploy-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .deploy-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #0b1120;
            padding: 4px 16px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            white-space: nowrap;
        }
        .deploy-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 8px;
            text-align: center;
        }
        .deploy-card .deploy-desc {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .deploy-features {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 24px;
        }
        .deploy-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .deploy-features li::before {
            content: '✓';
            color: var(--accent-primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .deploy-card .btn {
            width: 100%;
            justify-content: center;
        }

        /* ---------- 安全技术栈 ---------- */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .tech-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            transition: all var(--transition);
            font-family: var(--font-mono);
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .tech-item:hover {
            border-color: var(--border-hover);
            color: var(--accent-primary);
            transform: scale(1.05);
        }
        .tech-item .tech-name {
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 4px;
            font-family: var(--font-sans);
        }

        /* ---------- 用户之声 ---------- */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .testimonial-quote {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
            position: relative;
            padding-left: 20px;
            border-left: 3px solid var(--accent-primary);
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #0b1120;
            font-size: 1rem;
        }
        .testimonial-info .name {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .testimonial-info .role {
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 170, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            gap: 16px;
            user-select: none;
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--accent-primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 24px;
        }
        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            padding-bottom: 18px;
            line-height: 1.7;
        }
        .faq-item input[type='checkbox'] {
            display: none;
        }
        .faq-item input[type='checkbox']:checked~.faq-answer {
            max-height: 200px;
        }
        .faq-item input[type='checkbox']:checked~.faq-question .faq-icon {
            transform: rotate(45deg);
        }

    /* ========================================
       SafeW 安全手册图标卡片样式
       ======================================== */

    .guides-grid {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 20px;
        align-items: stretch;
    }

    .guide-card-link {
        display: block;
        min-width: 0;
        height: 100%;
        text-decoration: none;
        color: inherit;
    }

    .guide-card {
        display: flex;
        flex-direction: column;
        height: 100%;
        background: rgba(15, 23, 42, 0.88);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 16px;
        padding: 24px 22px 22px;
        position: relative;
        overflow: hidden;
        transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        cursor: pointer;
    }

    .guide-card-link:hover .guide-card {
        border-color: rgba(0, 212, 170, 0.45);
        transform: translateY(-6px);
        box-shadow: 0 16px 40px rgba(0, 212, 170, 0.15);
        background: rgba(20, 30, 55, 0.95);
    }

    /* 特色卡片（第一篇）高亮处理 */
    .guide-card--featured {
        border-color: rgba(0, 212, 170, 0.35);
        background: rgba(10, 30, 35, 0.7);
    }
    .guide-card--featured::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, #00d4aa, #38bdf8, #f5c542);
        border-radius: 16px 16px 0 0;
    }
    .guide-card-link:hover .guide-card--featured {
        border-color: rgba(0, 212, 170, 0.6);
        box-shadow: 0 20px 48px rgba(0, 212, 170, 0.22);
    }

    /* 图标容器 */
    .guide-card__icon {
        position: relative;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        border-radius: 16px;
        margin-bottom: 16px;
        background: rgba(0, 212, 170, 0.1);
        border: 1px solid rgba(0, 212, 170, 0.25);
        transition: all 0.3s ease;
        flex-shrink: 0;
    }
    .guide-card-link:hover .guide-card__icon {
        background: rgba(0, 212, 170, 0.18);
        border-color: rgba(0, 212, 170, 0.5);
        transform: scale(1.05);
    }
    .icon-emoji {
        font-size: 1.8rem;
        line-height: 1;
        z-index: 1;
        pointer-events: none;
        filter: drop-shadow(0 2px 8px rgba(0, 212, 170, 0.3));
    }
    .icon-ring {
        position: absolute;
        width: 100%;
        height: 100%;
        border-radius: 16px;
        border: 2px dashed rgba(0, 212, 170, 0.2);
        animation: icon-ring-spin 12s linear infinite;
        pointer-events: none;
    }

    @keyframes icon-ring-spin {
        0% { transform: rotate(0deg); border-color: rgba(0, 212, 170, 0.25); }
        50% { border-color: rgba(56, 189, 248, 0.35); }
        100% { transform: rotate(360deg); border-color: rgba(0, 212, 170, 0.25); }
    }

    /* 元信息行 */
    .guide-card__meta {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 10px;
        flex-wrap: wrap;
    }
    .guide-card__tag {
        display: inline-block;
        font-size: 0.72rem;
        font-weight: 600;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: #00d4aa;
        background: rgba(0, 212, 170, 0.1);
        padding: 3px 10px;
        border-radius: 100px;
        border: 1px solid rgba(0, 212, 170, 0.2);
        white-space: nowrap;
    }
    .guide-card__date {
        font-size: 0.78rem;
        color: #7a8a9e;
        letter-spacing: 0.03em;
        font-weight: 500;
    }

    /* 标题与描述 */
    .guide-card__title {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 6px;
        line-height: 1.4;
        letter-spacing: -0.01em;
        color: #f0f4f8;
        transition: color 0.25s ease;
    }
    .guide-card-link:hover .guide-card__title {
        color: #00d4aa;
    }
    .guide-card__desc {
        color: #7a8a9e;
        font-size: 0.86rem;
        line-height: 1.65;
        flex: 1;
        margin-bottom: 14px;
    }

    /* 底部链接提示 */
    .guide-card__link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.82rem;
        font-weight: 600;
        color: #38bdf8;
        transition: all 0.25s ease;
        margin-top: auto;
        letter-spacing: 0.02em;
    }
    .guide-card-link:hover .guide-card__link {
        color: #00d4aa;
        gap: 12px;
    }
    .guide-card__link span {
        transition: transform 0.25s ease;
    }
    .guide-card-link:hover .guide-card__link span {
        transform: translateX(4px);
    }

    /* 底部“浏览全部”按钮 */
    .guides-more {
        text-align: center;
        margin-top: 36px;
    }
    .guides-more .btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    /* ---------- 响应式适配 ---------- */
    @media (max-width: 992px) {
        .guides-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px;
        }
        .guide-card {
            padding: 20px 18px 18px;
        }
    }

    @media (max-width: 640px) {
        .guides-grid {
            grid-template-columns: 1fr;
            gap: 14px;
        }
        .guide-card {
            padding: 18px 16px 16px;
        }
        .guide-card__icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            margin-bottom: 12px;
        }
        .icon-emoji {
            font-size: 1.5rem;
        }
        .guide-card__title {
            font-size: 0.95rem;
        }
        .guide-card__desc {
            font-size: 0.82rem;
        }
    }

        /* ---------- CTA区域 ---------- */
        .cta-section {
            padding: 60px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, #0f1b2e 0%, #0b1120 60%, #1a0f2e 100%);
            border: 1px solid rgba(0, 212, 170, 0.3);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 212, 170, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn {
            position: relative;
            z-index: 1;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: #080c16;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 12px;
            max-width: 280px;
        }
        .footer-col h3 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-primary);
        }

        .friend-links {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            margin-bottom: 24px;
        }
        .friend-links h3 {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .friend-links-list {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .friend-links-list a {
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 6px 12px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.03);
            transition: all var(--transition);
        }
        .friend-links-list a:hover {
            color: var(--accent-primary);
            background: rgba(0, 212, 170, 0.08);
        }

        .copyright {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .platform-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .tech-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deploy-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: auto;
                padding: calc(var(--header-height) + 40px) 0 60px;
            }
            .section {
                padding: 50px 0;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .tech-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 320px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-box {
                padding: 36px 20px;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card {
                padding: 16px 10px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .stat-label {
                font-size: 0.75rem;
            }
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ---------- 辅助类 ---------- */
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }