/*
Theme Name: RK3588S Low Latency Pro
Theme URI: https://yourdomain.com
Author: Your Company
Author URI: https://yourdomain.com
Description: RK3588S 超低延迟视频方案官方网站主题
Version: 1.0.0
License: GPL v2 or later
Text Domain: rk3588s-llp
*/

/* ============================================
   1. 重置与基础样式
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #60a5fa;
    --color-secondary: #10b981;
    --color-accent: #f59e0b;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --container-max: 1280px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 140px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}

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

p { margin-bottom: 1rem; }
ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
img { max-width: 100%; height: auto; }

/* ============================================
   2. 布局容器与网格
   ============================================ */
.container {
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }

/* ============================================
   3. 导航栏
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-gray-200);
    padding: 0.75rem 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-branding { flex-shrink: 0; }

.site-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    white-space: nowrap;
}

.site-title a { color: var(--color-gray-900); }

.main-navigation {
    flex: 1;
    display: flex;
    justify-content: center;
}

.primary-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    justify-content: center;
}

.primary-menu a {
    display: block;
    color: var(--color-gray-700);
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    white-space: nowrap;
    transition: color 0.2s;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    position: relative;
    transition: all 0.3s;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: "";
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: all 0.3s;
}

.menu-toggle-icon::before { top: -8px; }
.menu-toggle-icon::after { bottom: -8px; }

.menu-toggle.is-active .menu-toggle-icon { background: transparent; }
.menu-toggle.is-active .menu-toggle-icon::before { top: 0; transform: rotate(45deg); }
.menu-toggle.is-active .menu-toggle-icon::after { bottom: 0; transform: rotate(-45deg); }

/* ============================================
   4. 按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: all 0.2s;
    cursor: pointer;
    border: 1px solid transparent;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-400);
}

.btn-outline-light {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--color-white);
}

.btn-large { padding: 0.875rem 1.75rem; font-size: 1.125rem; }
.btn-block { display: flex; width: 100%; }
.btn-sm { padding: 0.375rem 0.875rem; font-size: 0.875rem; }

/* ============================================
   5. Hero 区域
   ============================================ */
.hero-home {
    background: linear-gradient(135deg, var(--color-gray-900) 0%, #1e3a5f 100%);
    color: var(--color-white);
    padding: 3rem 0;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
}

.hero-text { max-width: 100%; }

.hero-badge .badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.375rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #60a5fa, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--color-gray-300);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.hero-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.keyword {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.625rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    white-space: nowrap;
}

.hero-visual { max-width: 100%; }

.latency-comparison {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    border-radius: 1rem;
    padding: 1.25rem;
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    gap: 0.5rem;
}

.comparison-badge {
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    white-space: nowrap;
}

.comparison-badge.left { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.comparison-badge.right { background: rgba(16, 185, 129, 0.2); color: #4ade80; }

.comparison-screens {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    place-items: center;
}

.screen-container {
    background: #1e293b;
    border-radius: 0.75rem;
    padding: 0.75rem;
    aspect-ratio: 16/9;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.screen-container.highlight {
    border: 2px solid #4ade80;
    box-shadow: 0 0 30px rgba(74, 222, 128, 0.3);
}

.screen-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0.5rem;
}

.screen-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 2rem 0.5rem 0.5rem;
}

.latency-value {
    font-size: 3rem;
    font-weight: 700;
    color: #4ade80;
    font-family: monospace;
    line-height: 1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.latency-unit {
    font-size: 1.25rem;
    color: #4ade80;
    font-weight: 500;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.screen-label {
    margin-top: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
}

.status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-dot.green {
    background: #4ade80;
    box-shadow: 0 0 10px #4ade80;
    animation: pulse-green 2s infinite;
}

.screen-desc {
    margin-top: 0.25rem;
    font-size: 0.9rem;
    color: var(--color-gray-300);
}

.comparison-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.comparison-note {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    color: var(--color-gray-400);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    backdrop-filter: blur(4px);
}

/* ============================================
   6. 区块样式
   ============================================ */
.section-header { margin-bottom: 3rem; text-align: center; }
.section-title { margin-bottom: 0.5rem; }
.section-subtitle { color: var(--color-gray-600); font-size: 1.125rem; }

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.view-all-link {
    color: var(--color-primary);
    font-weight: 500;
    transition: all 0.2s;
}

.view-all-link:hover { color: var(--color-primary-dark); }

.bg-gray-50 { background-color: var(--color-gray-50); }
.bg-gray-100 { background-color: var(--color-gray-100); }
.bg-white { background-color: var(--color-white); }
.bg-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.py-1 { padding-top: 1rem; padding-bottom: 1rem; }
.py-2 { padding-top: 2rem; padding-bottom: 2rem; }
.py-3 { padding-top: 3rem; padding-bottom: 3rem; }
.py-4 { padding-top: 4rem; padding-bottom: 4rem; }
.py-5 { padding-top: 5rem; padding-bottom: 5rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }
.mt-5 { margin-top: 5rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

.text-center { text-align: center; }
.text-white { color: var(--color-white); }
.text-gray-600 { color: var(--color-gray-600); }
.text-primary { color: var(--color-primary); }

/* ============================================
   7. 通用列表样式
   ============================================ */
.check-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.check-list li {
    padding: 1rem 1.25rem;
    background: var(--color-white);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-gray-700);
    transition: all 0.2s;
}

.check-list li:hover {
    box-shadow: var(--shadow-md);
    background: var(--color-gray-50);
}

.check-list li::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

.cross-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.cross-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-gray-700);
}

.cross-list li:last-child { border-bottom: none; }

.cross-list li.cross::before {
    content: "✗";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--color-error);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

/* ============================================
   8. 表格样式
   ============================================ */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5rem 0;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.comparison-table,
.feature-matrix-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table thead,
.feature-matrix-table thead {
    background: var(--color-gray-900);
    color: var(--color-white);
}

.comparison-table th,
.feature-matrix-table th {
    padding: 1rem 1.25rem;
    text-align: left;
    font-weight: 600;
    font-size: 1rem;
    white-space: nowrap;
}

.comparison-table td,
.feature-matrix-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-gray-200);
    color: var(--color-gray-700);
}

.comparison-table tbody tr:hover,
.feature-matrix-table tbody tr:hover {
    background: var(--color-gray-50);
}

.comparison-table tbody tr:last-child td,
.feature-matrix-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table .total-row {
    background: var(--color-gray-100);
    font-weight: 700;
}

.comparison-table .total-row td { color: var(--color-gray-900); }

.feature-matrix-table th:first-child {
    text-align: left;
    background: var(--color-gray-800);
}

.feature-matrix-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--color-gray-900);
    background: var(--color-gray-50);
}

.feature-matrix-table .check { color: var(--color-success); font-size: 1.25rem; font-weight: bold; }
.feature-matrix-table .cross { color: var(--color-error); font-size: 1.25rem; font-weight: bold; }

/* ============================================
   9. 特性卡片
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--color-white);
    border-radius: 1rem;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    text-align: center;
    height: 100%;
}

.feature-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.feature-card.featured { border: 2px solid var(--color-primary); }

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 1rem;
    font-size: 2rem;
}

.feature-icon.bg-blue { background: #dbeafe; color: var(--color-primary); }
.feature-icon.bg-green { background: #d1fae5; color: var(--color-secondary); }
.feature-icon.bg-purple { background: #e9d5ff; color: #9333ea; }

.feature-title { font-size: 1.25rem; margin-bottom: 0.5rem; }

.warning-tag { background: #fef3c7; color: #d97706; }
.success-tag { background: #d1fae5; color: var(--color-secondary); }
.info-tag { background: #dbeafe; color: var(--color-primary); }

.warning-tag, .success-tag, .info-tag {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.feature-description { color: var(--color-gray-600); margin-bottom: 1.5rem; }

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.feature-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-list li::before {
    content: "✓";
    color: var(--color-success);
    font-weight: bold;
}

/* ============================================
   10. 统计数字
   ============================================ */
.stats-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.stat-item { text-align: center; }
.stat-value { font-size: 2.5rem; font-weight: 700; margin-bottom: 0.25rem; }
.stat-label { opacity: 0.9; font-size: 1rem; }

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.9;
}

/* ============================================
   11. 客户 Logo 墙
   ============================================ */
.clients-section { padding: 4rem 0; }

.clients-filter {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 2rem;
    align-items: center;
    justify-items: center;
}

.client-logo-item {
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.2s;
    text-align: center;
}

.client-logo-item:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* ============================================
   12. 定价卡片
   ============================================ */
.pricing-section { padding: 4rem 0; }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pricing-card {
    background: var(--color-white);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured { border: 2px solid var(--color-primary); }

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header { text-align: center; margin-bottom: 1.5rem; }
.pricing-name { font-size: 1.5rem; margin-bottom: 0.25rem; }
.pricing-subtitle { color: var(--color-gray-500); font-size: 0.875rem; }

.pricing-price { text-align: center; margin-bottom: 1.5rem; }
.price-amount { font-size: 2.5rem; font-weight: 700; color: var(--color-primary); }
.price-unit { color: var(--color-gray-500); font-size: 0.875rem; }

.pricing-deliverable {
    text-align: center;
    padding: 0.75rem;
    background: var(--color-gray-50);
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pricing-features li::before {
    content: "✓";
    color: var(--color-success);
    font-weight: bold;
}

.pricing-footer { text-align: center; }

/* ============================================
   13. 博客卡片
   ============================================ */
.blog-preview-section { padding: 4rem 0; }

.blog-preview-grid,
.archive-grid,
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card,
.archive-card,
.related-card {
    background: var(--color-white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.blog-card:hover,
.archive-card:hover,
.related-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.archive-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--color-gray-200);
}

.archive-card:hover { border-color: var(--color-primary); }

.blog-card-image,
.archive-card-thumbnail {
    height: 200px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-gray-100);
}

.blog-card-image img,
.archive-card-thumbnail img,
.related-card img {
    width: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.blog-card:hover .blog-card-image img,
.archive-card:hover .archive-card-thumbnail img,
.related-card:hover img {
    transform: scale(1.05);
}

.archive-card-thumbnail.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-50);
}

.blog-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

.blog-card-content,
.archive-card-content {
    padding: 1.5rem 1.5rem 1rem;
}

.blog-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.5rem;
}

.blog-card-title,
.archive-card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.blog-card-title a,
.archive-card-title a,
.related-card a {
    color: var(--color-gray-900);
}

.archive-card-title {
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.archive-card:hover .archive-card-title { color: var(--color-primary); }

.blog-card-excerpt,
.archive-card-excerpt {
    color: var(--color-gray-600);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 1rem;
}

.archive-card-excerpt {
    font-size: 0.9rem;
    line-height: 1.6;
    -webkit-line-clamp: 3;
}

.blog-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: var(--color-gray-100);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.archive-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem 1.5rem;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    border-top: 1px solid var(--color-gray-100);
    margin-top: auto;
}

.archive-card-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.archive-card-category {
    background: var(--color-gray-100);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.related-card h4 {
    padding: 1rem 1rem 0.5rem;
    font-size: 1.125rem;
    margin: 0;
}

.related-card a:hover h4 { color: var(--color-primary); }

.related-date {
    display: block;
    padding: 0 1rem 1rem;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

/* ============================================
   14. 客户评价
   ============================================ */
.testimonials-section {
    padding: 4rem 0;
    background: var(--color-gray-50);
}

.testimonials-slider {
    position: relative;
    overflow: hidden;
}

.testimonial-slide {
    display: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.testimonial-slide.active {
    display: block;
    opacity: 1;
}

.testimonial-card {
    background: var(--color-white);
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    max-width: 900px;
    margin: 0 auto;
}

.testimonial-quote {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.testimonial-quote svg {
    width: 40px;
    height: 40px;
    opacity: 0.5;
}

.testimonial-content {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-gray-800);
    margin-bottom: 2rem;
    font-weight: 400;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    border-top: 1px solid var(--color-gray-200);
    padding-top: 1.5rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.author-avatar-placeholder {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    flex-shrink: 0;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.author-title {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
}

.author-company {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.testimonials-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.slider-prev,
.slider-next {
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.25rem;
    color: var(--color-gray-600);
}

.slider-prev:hover,
.slider-next:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.slider-dots {
    display: flex;
    gap: 0.5rem;
}

.slider-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-gray-300);
    cursor: pointer;
    transition: all 0.2s;
}

.slider-dots .dot.active {
    background: var(--color-primary);
    width: 28px;
    border-radius: 1rem;
}

/* ============================================
   15. CTA 区域
   ============================================ */
.cta-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    border-radius: 1rem;
    margin: 2rem 0;
}

.cta-section .container { padding: 3rem 2rem; }
.cta-section h3 { color: var(--color-white); font-size: 2rem; margin-bottom: 1rem; }
.cta-section p { color: rgba(255, 255, 255, 0.9); font-size: 1.125rem; margin-bottom: 2rem; }

.cta-section .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    border: none;
}

.cta-section .btn-primary:hover {
    background: var(--color-gray-100);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-content { max-width: 800px; margin: 0 auto; }
.cta-title { font-size: 2.5rem; margin-bottom: 1rem; }
.cta-description { font-size: 1.125rem; margin-bottom: 2rem; opacity: 0.9; }

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

/* ============================================
   16. 筛选栏
   ============================================ */
.filter-bar { margin-bottom: 2rem; }

.filter-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-label { font-weight: 600; }

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 2rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ============================================
   17. 语言切换器
   ============================================ */
.language-switcher { position: relative; }

.lang-switcher-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.lang-switch-link {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--color-gray-100);
    border-radius: 2rem;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.lang-switch-link:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

.lang-flag { font-size: 1rem; line-height: 1; }

/* ============================================
   18. 页脚
   ============================================ */
.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: 3rem 0 1.5rem;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.footer-widget { min-width: 0; }

.footer-widget-title {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}



.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-menu li { margin-bottom: 0.625rem; }

.footer-menu a {
    color: var(--color-gray-400);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
}

.footer-menu a:hover {
    color: var(--color-white);
    transform: translateX(4px);
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--color-gray-800);
    border-bottom: 1px solid var(--color-gray-800);
    margin-bottom: 1.5rem;
}

.social-label { color: var(--color-gray-400); font-size: 0.9rem; }

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    color: var(--color-gray-300);
    transition: all 0.2s;
    text-decoration: none;
    font-size: 0.8rem;
}

.social-link:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem 0;
}

.footer-copyright {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    text-align: center;
}

.footer-icp {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem 0 1rem;
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

.footer-icp a {
    color: var(--color-gray-500);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-icp a:hover { color: var(--color-white); }

.footer-ip-warning {
    padding-top: 1rem;
    text-align: center;
}

.ip-warning {
    color: var(--color-warning);
    font-weight: 500;
    font-size: 0.8rem;
    margin: 0;
    opacity: 0.8;
}

/* ============================================
   19. 表单样式
   ============================================ */
.form-group { margin-bottom: 1.5rem; }

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* ============================================
   20. 面包屑
   ============================================ */
.breadcrumbs {
    padding: 1rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.breadcrumbs a { color: var(--color-gray-600); }
.breadcrumbs a:hover { color: var(--color-primary); }

.breadcrumbs .separator {
    margin: 0 0.5rem;
    color: var(--color-gray-400);
}

.breadcrumbs .current {
    color: var(--color-gray-900);
    font-weight: 500;
}

/* ============================================
   21. 返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    z-index: 99;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    transition: transform 0.2s;
}

.back-to-top:hover svg { transform: translateY(-2px); }

/* ============================================
   22. 社交分享
   ============================================ */
.social-share {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.share-label {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    margin-right: 0.25rem;
}

.share-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--color-gray-600);
    background: var(--color-gray-100);
    transition: all 0.2s;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.share-link:hover { transform: translateY(-2px); }
.share-link.twitter:hover { background: #1DA1F2; color: white; }
.share-link.linkedin:hover { background: #0077B5; color: white; }
.share-link.facebook:hover { background: #4267B2; color: white; }
.share-link.copy-link:hover { background: var(--color-gray-700); color: white; }

.copy-link { position: relative; }

.copy-link .copy-tooltip {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-gray-900);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
    pointer-events: none;
}

.copy-link.copied .copy-tooltip {
    opacity: 1;
    visibility: visible;
    bottom: -25px;
}

/* ============================================
   23. 页面头部
   ============================================ */
.page-header {
    padding: 3rem 0;
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.page-header.bg-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.page-header.bg-gradient .page-title { color: var(--color-white); }
.page-header.bg-gradient .page-excerpt { color: rgba(255, 255, 255, 0.9); }

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.page-excerpt {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 800px;
}

.page-content { padding: 2rem 0 4rem; }

.section-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 2rem;
    max-width: 800px;
}

/* ============================================
   24. 技术架构页
   ============================================ */
.latency-breakdown,
.server-architecture,
.backup-architecture,
.comparison,
.comparison-matrix,
.quote-section,
.faq-section,
.company-intro,
.vision-section,
.team-section,
.timeline-section,
.certifications-section {
    scroll-margin-top: 80px;
}

.architecture-diagram,
.backup-diagram {
    margin: 2rem 0;
    text-align: center;
    background: var(--color-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.architecture-diagram img,
.backup-diagram img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

.architecture-features { margin-top: 2rem; }

.architecture-features .feature-item {
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    height: 100%;
}

.architecture-features .feature-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.architecture-features .feature-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.architecture-features .feature-item h4::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: bold;
}

/* ============================================
   25. 源码授权页
   ============================================ */
.quote-section {
    background: var(--color-gray-50);
    border-radius: 1rem;
    margin: 2rem 0;
}

.quote-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.quote-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.quote-info > p {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.quote-benefits {
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

.quote-benefits h4 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--color-gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quote-benefits h4::before {
    content: "🎯";
    font-size: 1.5rem;
}

.quote-benefits ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.quote-benefits li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-gray-700);
}

.quote-benefits li:last-child { border-bottom: none; }

.quote-benefits li::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

.quote-form {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-gray-700);
    font-size: 0.9rem;
}

.contact-form select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
}

.contact-form textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.nda-download .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.nda-download .btn-outline:hover {
    background: var(--color-gray-100);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================
   26. FAQ 区域
   ============================================ */
.faq-section { padding: 3rem 0; }

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid var(--color-gray-200);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-gray-300);
}

.faq-question {
    padding: 1.25rem 1.5rem;
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
    user-select: none;
}

.faq-question:hover { background: var(--color-gray-50); }

.faq-question::after {
    content: "▼";
    font-size: 0.75rem;
    color: var(--color-primary);
    transition: transform 0.3s;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-question {
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-item.active .faq-question::after { transform: rotate(180deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer { max-height: 300px; }

.faq-answer p {
    padding: 1.25rem 1.5rem;
    margin: 0;
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ============================================
   27. 解决方案页
   ============================================ */
.solutions-nav {
    margin: 2rem 0;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: 72px;
    background: var(--color-white);
    z-index: 50;
}

.solutions-tabs {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.solution-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: 2rem;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s;
    white-space: nowrap;
}

.solution-tab:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gray-400);
    color: var(--color-gray-900);
}

.solution-tab.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.solution-detail {
    scroll-margin-top: 140px;
    border-bottom: 1px solid var(--color-gray-200);
}

.solution-detail:last-of-type { border-bottom: none; }

.solution-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.solution-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.solution-title {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.solution-block {
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.block-title {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.block-title.text-red { color: var(--color-error); }
.block-title.text-green { color: var(--color-success); }
.block-title.text-blue { color: var(--color-primary); }

.block-title::before {
    content: "";
    width: 4px;
    height: 24px;
    background: currentColor;
    border-radius: 2px;
    margin-right: 0.5rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.benefit-item {
    background: var(--color-gray-50);
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-gray-700);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.benefit-check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    font-size: 1rem;
    font-weight: bold;
}

.solution-cta {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.solution-cta .btn {
    flex: 1;
    justify-content: center;
    min-width: 160px;
}

.solution-image {
    position: sticky;
    top: 140px;
}

.solution-img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.solution-placeholder {
    background: var(--color-gray-100);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
}

/* ============================================
   28. 信创国产化专区
   ============================================ */
.domestic-section {
    margin: 3rem 0;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: 1rem;
}

.domestic-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: 0.375rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.domestic-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.domestic-card {
    background: var(--color-white);
    padding: 2rem 1.5rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    border: 1px solid var(--color-gray-200);
}

.domestic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.domestic-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border-radius: 1rem;
    color: white;
}

.domestic-card h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.domestic-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
    line-height: 1.5;
}

/* ============================================
   29. 方案咨询表单
   ============================================ */
.consultation-section { padding: 3rem 0; }

.consultation-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: var(--color-white);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.consultation-info {
    padding: 3rem;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, #1e3a5f 100%);
    color: var(--color-white);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.consultation-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.consultation-info p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.consultation-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.consultation-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

.consultation-features li::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: bold;
    flex-shrink: 0;
}

.consultation-form {
    padding: 3rem;
    background: var(--color-white);
}

/* ============================================
   30. 在线演示页
   ============================================ */
.page-demo { background: var(--color-gray-900); }
.demo-page { min-height: 100vh; }

.demo-status-bar {
    background: var(--color-gray-800);
    color: var(--color-white);
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--color-gray-700);
}

.status-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.stream-info {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray-300);
}

.dot.green {
    background: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
    animation: pulse-green 2s infinite;
}

.latency-badge {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.15);
    padding: 0.5rem 1.25rem;
    border-radius: 2rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 0.875rem;
    color: var(--color-gray-300);
}

.latency-badge .latency-value {
    font-size: 2rem;
    font-weight: 700;
    color: #4ade80;
    font-family: monospace;
    line-height: 1;
}

.demo-player-section { padding: 2rem 0; }

.player-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.player-container {
    background: var(--color-gray-800);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-700);
}

.player-container.primary { border: 2px solid var(--color-primary); }

.player-header {
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-gray-700);
}

.player-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-white);
    font-weight: 500;
    font-size: 1rem;
}

.live-dot {
    width: 10px;
    height: 10px;
    background: #ef4444;
    border-radius: 50%;
    animation: pulse-red 1.5s infinite;
}

.player-badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-300);
}

.player-screen {
    aspect-ratio: 16 / 9;
    background: #000;
    position: relative;
}

.player-screen video,
.player-screen canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.player-watermark {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
    font-weight: 500;
    pointer-events: none;
}

.latency-breakdown-bar {
    background: var(--color-gray-800);
    padding: 1.5rem 0;
    border-top: 1px solid var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-700);
}

.breakdown-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.breakdown-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    transition: all 0.2s;
}

.breakdown-item:hover { background: rgba(255, 255, 255, 0.08); }

.breakdown-label {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    margin-bottom: 0.5rem;
}

.breakdown-value {
    font-size: 2rem;
    font-weight: 700;
    color: #4ade80;
    font-family: monospace;
    line-height: 1.2;
}

.breakdown-unit {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-left: 0.125rem;
}

.stream-redundancy {
    padding: 2rem 0;
    background: var(--color-gray-900);
}

.redundancy-panel {
    background: var(--color-gray-800);
    border-radius: 1rem;
    padding: 1.75rem;
    border: 1px solid var(--color-gray-700);
}

.redundancy-panel h4 {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.redundancy-panel h4::before {
    content: "🔄";
    font-size: 1.25rem;
}

.stream-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.stream-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 0.75rem;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.stream-item.active {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
}

.stream-item.standby { background: rgba(0, 0, 0, 0.15); }
.stream-item.offline { opacity: 0.6; }

.stream-name {
    flex: 1;
    color: var(--color-gray-200);
    font-weight: 500;
}

.stream-status {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    min-width: 80px;
}

.stream-status.online { color: #4ade80; }
.stream-status.standby { color: var(--color-gray-400); }
.stream-status.offline { color: #ef4444; }

.stream-bitrate {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    font-family: monospace;
    min-width: 100px;
    text-align: right;
}

.redundancy-note {
    padding-top: 1rem;
    border-top: 1px solid var(--color-gray-700);
}

.redundancy-note p {
    color: var(--color-gray-400);
    font-size: 0.875rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.redundancy-note p::before {
    content: "ℹ️";
    font-size: 1rem;
}

.demo-info-section {
    padding: 3rem 0 4rem;
    background: var(--color-gray-900);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.info-card {
    background: var(--color-gray-800);
    border-radius: 1rem;
    padding: 1.75rem;
    border: 1px solid var(--color-gray-700);
}

.info-card h4 {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-card h4::before {
    content: "📋";
    font-size: 1.25rem;
}

.param-table {
    width: 100%;
    border-collapse: collapse;
}

.param-table tr { border-bottom: 1px solid var(--color-gray-700); }
.param-table tr:last-child { border-bottom: none; }

.param-table td {
    padding: 0.875rem 0;
    color: var(--color-gray-300);
}

.param-table td:first-child {
    color: var(--color-gray-400);
    width: 40%;
}

.param-table td:last-child {
    color: var(--color-white);
    font-weight: 500;
}

.param-table .check {
    color: var(--color-success);
    font-weight: bold;
    margin-right: 0.375rem;
}

.demo-cta {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 1.5rem;
    color: var(--color-white);
}

.demo-cta h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.demo-cta p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.demo-cta .btn {
    background: var(--color-white);
    color: var(--color-primary);
    padding: 0.875rem 2.5rem;
    font-size: 1.125rem;
    border: none;
}

.demo-cta .btn:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-primary-dark);
}

/* ============================================
   31. 关于我们页
   ============================================ */
.intro-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.intro-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
    position: relative;
}

.intro-content h2::after {
    content: "";
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 2px;
}

.intro-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-gray-600);
    margin-bottom: 2.5rem;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.intro-stats .stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-gray-50);
    border-radius: 1rem;
    transition: all 0.3s;
}

.intro-stats .stat-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.intro-stats .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.intro-stats .stat-label {
    font-size: 0.95rem;
    color: var(--color-gray-600);
    font-weight: 500;
}

.intro-image {
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}

.intro-image:hover img { transform: scale(1.02); }

.vision-section {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: 2rem;
    margin: 2rem 0;
}

.vision-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.vision-text {
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    max-width: 800px;
    margin: 0 auto 3rem;
    font-weight: 300;
}

.vision-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.value-card {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    text-align: center;
    border: 1px solid var(--color-gray-200);
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.value-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
    position: relative;
    padding-bottom: 1rem;
}

.value-card h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.value-card p {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: 0;
}

.team-section { padding: 4rem 0; }

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.team-card {
    background: var(--color-white);
    border-radius: 1.5rem;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    text-align: center;
    border: 1px solid var(--color-gray-200);
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.team-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-primary);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    font-size: 3rem;
    font-weight: 600;
}

.team-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.team-position {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-bio {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.team-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    background: var(--color-gray-100);
    border-radius: 2rem;
    color: var(--color-gray-700);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

.team-linkedin:hover {
    background: #0077b5;
    color: white;
}

.timeline-section {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: 2rem;
    padding: 4rem 0;
}

.timeline {
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 120px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    position: relative;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-year {
    width: 120px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-align: right;
    padding-right: 1.5rem;
    position: relative;
}

.timeline-year::after {
    content: "";
    position: absolute;
    right: -9px;
    top: 12px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.timeline-content {
    flex: 1;
    background: var(--color-white);
    padding: 1.5rem 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s;
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.timeline-content p {
    color: var(--color-gray-600);
    margin-bottom: 0;
    line-height: 1.6;
}

.certifications-section { padding: 4rem 0; }

.certs-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.cert-item {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s;
}

.cert-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.cert-icon { font-size: 3rem; margin-bottom: 1rem; }

.cert-item h4 {
    font-size: 1rem;
    margin-bottom: 0;
    color: var(--color-gray-700);
    font-weight: 500;
}

.join-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 2rem;
    margin: 3rem 0;
    padding: 4rem 0;
}

.join-content {
    max-width: 700px;
    margin: 0 auto;
}

.join-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.join-content p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.join-content .btn {
    background: var(--color-white);
    color: var(--color-primary);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.join-content .btn:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-primary-dark);
}

/* ============================================
   32. 404 错误页
   ============================================ */
.error-404-page {
    min-height: 70vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    position: relative;
    overflow: hidden;
}

.error-404-page::before,
.error-404-page::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.error-404-page::before { top: -100px; left: -100px; }
.error-404-page::after { bottom: -100px; right: -100px; }

.error-content {
    max-width: 650px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.error-code {
    font-size: clamp(8rem, 20vw, 12rem);
    font-weight: 800;
    line-height: 1;
    color: var(--color-primary);
    text-shadow:
            4px 4px 0 var(--color-primary-light),
            8px 8px 0 rgba(37, 99, 235, 0.2),
            12px 12px 0 rgba(37, 99, 235, 0.1);
    margin-bottom: 1.5rem;
    animation: float 6s ease-in-out infinite;
}

.error-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.error-actions .btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    min-width: 140px;
}

.error-search,
.error-suggestions {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    padding: 2rem;
    background: var(--color-white);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.error-search h4,
.error-suggestions h4 {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--color-gray-900);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.error-search h4::before { content: "🔍"; }
.error-suggestions h4::before { content: "💡"; }

.suggestions-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.suggestions-list a {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 2rem;
    color: var(--color-gray-700);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}

.suggestions-list a:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   33. 博客文章页
   ============================================ */
.single-post { background: var(--color-white); }

.single-post .breadcrumbs {
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: 2rem;
}

.post-header { padding: 2rem 0 1.5rem; }

.post-meta-top {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.post-category {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
}

.post-category:hover {
    background: var(--color-primary-dark);
    color: white;
}

.post-date,
.post-reading-time {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.post-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.post-meta-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-gray-200);
}

.post-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.post-author img {
    border-radius: 50%;
    width: 40px;
    height: 40px;
    object-fit: cover;
}

.author-name {
    font-weight: 500;
    color: var(--color-gray-900);
}

.post-thumbnail { margin-bottom: 2rem; }

.post-thumbnail img,
.featured-image {
    width: 100%;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.post-content { padding: 2rem 0; }

.content-wrapper {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 3rem;
}

.post-toc {
    position: sticky;
    top: 100px;
    align-self: start;
    width: 100%;
    max-width: 200px;
    min-width: 0;
    background: var(--color-gray-50);
    border-radius: 0.75rem;
    padding: 1.25rem 1rem;
    border: 1px solid var(--color-gray-200);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    overflow-x: hidden;
    word-break: break-word;
}

.post-toc h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li { margin: 0; padding: 0; }

.toc-list a {
    display: block;
    padding: 0.4rem 0;
    color: var(--color-gray-600);
    font-size: 0.8rem;
    line-height: 1.4;
    text-decoration: none;
    border-bottom: 1px solid var(--color-gray-200);
    transition: color 0.2s;
    word-break: break-word;
}

.toc-list li:last-child a { border-bottom: none; }

.toc-list a:hover { color: var(--color-primary); }

.toc-list a.toc-h3 { padding-left: 12px; font-size: 0.75rem; }
.toc-list a.toc-h4 { padding-left: 24px; font-size: 0.7rem; color: var(--color-gray-500); }

.post-body {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-gray-800);
    min-width: 0;
    word-break: break-word;
}

.post-body h2 {
    font-size: 1.75rem;
    margin: 2.5rem 0 1.25rem;
    scroll-margin-top: 100px;
}

.post-body h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    scroll-margin-top: 100px;
}

.post-body p { margin-bottom: 1.5rem; }

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.post-body pre {
    background: var(--color-gray-900);
    color: var(--color-gray-100);
    padding: 1.5rem;
    border-radius: 0.75rem;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.post-body code {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-gray-200);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.tags-label {
    color: var(--color-gray-600);
    font-weight: 500;
}

.tag-link {
    display: inline-block;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    padding: 0.375rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all 0.2s;
}

.tag-link:hover {
    background: var(--color-primary);
    color: white;
}

.post-author-bio {
    display: flex;
    gap: 1.5rem;
    background: var(--color-gray-50);
    padding: 1.5rem;
    border-radius: 1rem;
    margin-bottom: 1rem;
}

.post-author-bio img {
    border-radius: 50%;
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    object-fit: cover;
}

.author-info h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.author-info p {
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.related-posts {
    background: var(--color-gray-50);
    padding: 3rem 0;
    margin-top: 2rem;
}

.related-title {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 2.5rem;
}

/* ============================================
   34. 搜索表单
   ============================================ */
.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-field {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: 0.5rem;
    font-size: 1rem;
}

.search-submit {
    padding: 0.75rem 1.25rem;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.search-submit:hover { background: var(--color-primary-dark); }

/* ============================================
   35. 分页
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0 3rem;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    border-radius: 0.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    color: var(--color-gray-700);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

.pagination .page-numbers.current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.pagination .page-numbers:hover:not(.current) {
    background: var(--color-gray-100);
    border-color: var(--color-gray-300);
}

/* ============================================
   36. 归档页
   ============================================ */
.archive-page { background: var(--color-white); }

.archive-page .breadcrumbs {
    padding: 1rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: 2rem;
}

.archive-header { padding: 1rem 0 2rem; }

.archive-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.archive-description {
    color: var(--color-gray-600);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.archive-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.archive-card-link {
    display: block;
    color: inherit;
    text-decoration: none;
    flex: 1;
}

.no-posts {
    text-align: center;
    padding: 4rem 0;
    color: var(--color-gray-500);
}

/* ============================================
   37. 动画
   ============================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-green {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes pulse-red {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
}

/* ============================================
   38. 辅助类
   ============================================ */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.hidden { display: none !important; }

/* ============================================
   39. 响应式
   ============================================ */
@media (max-width: 1024px) {
    .grid-4, .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { gap: 1rem; }
    .pricing-card { padding: 1.5rem; }
    .footer-widgets { grid-template-columns: repeat(2, 1fr); text-align: center;}
    
    .intro-grid,
    .solution-grid,
    .content-wrapper,
    .quote-wrapper,
    .consultation-wrapper {
        grid-template-columns: 1fr;
    }
    
    .solution-image { position: static; order: -1; }
    .post-toc { position: static; max-width: 100%; }
    .team-grid { grid-template-columns: repeat(3, 1fr); }
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
    .domestic-grid { grid-template-columns: repeat(2, 1fr); }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .related-grid,
    .archive-grid { grid-template-columns: repeat(2, 1fr); }
    
    .timeline::before { left: 100px; }
    .timeline-year { width: 100px; font-size: 1.25rem; }
    
    .breakdown-grid { gap: 0.75rem; }
    .breakdown-value { font-size: 1.5rem; }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4, .grid-5,
    .features-grid, .blog-preview-grid, .pricing-grid, .stats-grid,
    .vision-values, .domestic-grid, .benefits-grid, .related-grid,
    .team-grid, .certs-grid, .faq-grid, .info-grid,
    .archive-grid {
        grid-template-columns: 1fr;
    }

    .navbar { flex-wrap: wrap; }
    .site-branding { flex: 1; }
    .menu-toggle { display: block; }
    .main-navigation { order: 3; width: 100%; }
    
    .primary-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: var(--color-white);
        border-radius: 0.5rem;
        box-shadow: var(--shadow-lg);
        padding: 0.5rem 0;
    }
    
    .primary-menu.active { display: flex; }
    .primary-menu li { width: 100%; }
    .primary-menu a { padding: 0.75rem 1rem; white-space: normal; }

    .hero-content { grid-template-columns: 1fr; gap: 2rem; }
    .hero-text { text-align: center; }
    .hero-cta { justify-content: center; }
    .hero-keywords { justify-content: center; }
    
    .pricing-card { max-width: 400px; margin: 0 auto; }
    
    .footer-widgets { grid-template-columns: repeat(2, 1fr);text-align: center;}
    .footer-widget-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-menu a:hover {
        transform: translateX(0) scale(1.05);
    }
    
    .footer-social {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .social-links { justify-content: center; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-icp { flex-wrap: wrap; text-align: center; }
    
    .header-row { flex-direction: column; gap: 1rem; text-align: center; }
    .testimonial-author { flex-direction: row; text-align: left; }
    .cta-title { font-size: 1.75rem; }
    
    .solutions-nav { position: static; margin: 1rem 0; }
    .solutions-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        flex-wrap: nowrap;
    }
    
    .timeline::before { left: 30px; }
    .timeline-item { flex-direction: column; gap: 0.75rem; }
    .timeline-year {
        width: auto;
        text-align: left;
        padding-left: 60px;
    }
    .timeline-year::after { left: 21px; right: auto; }
    .timeline-content { margin-left: 60px; padding: 1.25rem; }
    
    .status-bar-content { flex-direction: column; align-items: flex-start; }
    .latency-badge { width: 100%; justify-content: center; }
    .player-grid { grid-template-columns: 1fr; }
    .breakdown-grid { grid-template-columns: repeat(3, 1fr); }
    .stream-item { flex-wrap: wrap; gap: 0.75rem; }
    .stream-bitrate { text-align: left; width: 100%; }
    
    .error-404-page { min-height: 60vh; padding: 2rem 0; }
    .error-actions { flex-direction: column; }
    .error-actions .btn { width: 100%; }
    .error-search .search-form { flex-direction: column; }
    .suggestions-list { flex-direction: column; align-items: stretch; }
    
    .post-meta-bottom { flex-direction: column; align-items: flex-start; }
    .post-author-bio { flex-direction: column; text-align: center; align-items: center; }
    .post-title { font-size: 2rem; }
    
    .testimonial-card { padding: 1.5rem; }
    .testimonial-content { font-size: 1.125rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.75rem; }
    .comparison-screens { grid-template-columns: 1fr; }
    .header-actions .btn { padding: 0.375rem 0.75rem; font-size: 0.75rem; }
    .lang-name { display: none; }
    .lang-switch-link { padding: 0.5rem; }
    .form-row.grid-2 { grid-template-columns: 1fr; }
    
    
    .intro-stats { grid-template-columns: 1fr; }
    .team-card { max-width: 320px; margin: 0 auto; }
    
    .timeline::before { left: 20px; }
    .timeline-year { padding-left: 45px; }
    .timeline-year::after { left: 11px; }
    .timeline-content { margin-left: 45px; }
    
    .breakdown-grid { grid-template-columns: repeat(2, 1fr); }
    .breakdown-value { font-size: 1.25rem; }
    .latency-badge .latency-value { font-size: 1.5rem; }
    
    .error-code { font-size: 5rem; }
    .post-title { font-size: 1.5rem; }
    .archive-title { font-size: 1.5rem; }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
    .footer-widgets { grid-template-columns: repeat(2, 1fr);text-align: center;}
    
    .site-footer { padding: 2rem 0 1rem; }
    .footer-widget-title { font-size: 0.95rem; }
    .footer-menu a { font-size: 0.85rem; }
    
    .testimonial-card { padding: 1.25rem; }
    .testimonial-content { font-size: 1rem; }
    .testimonial-author { flex-direction: column; text-align: center; }
    .author-info { align-items: center; }
}

/* ============================================
   40. 打印样式
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .hero-cta,
    .menu-toggle,
    .language-switcher,
    .pagination,
    .solutions-nav,
    .solution-cta,
    .consultation-section,
    .domestic-cta,
    .demo-status-bar,
    .player-header,
    .player-watermark,
    .latency-breakdown-bar,
    .stream-redundancy,
    .demo-cta,
    .join-section,
    .btn,
    .team-linkedin,
    .error-actions .btn,
    .error-search,
    .error-suggestions,
    .quote-section,
    .nda-download,
    form {
        display: none !important;
    }

    body { background: white; color: black; }
    a { color: black; text-decoration: underline; }

    .comparison-table,
    .feature-matrix-table {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .page-header { background: none; padding: 1rem 0; }

    .architecture-diagram,
    .backup-diagram {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }

    .faq-item,
    .domestic-card,
    .value-card,
    .team-card,
    .cert-item,
    .timeline-content {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }

    .error-404-page { background: white; min-height: auto; }
    .error-code { text-shadow: none; color: black; }
    .demo-page { background: white; }
    .player-screen { border: 1px solid #ccc; }
    .info-card { background: white; border: 1px solid #ccc; color: black; }
    .param-table td { color: black; }
    .intro-stats .stat-item { background: #f5f5f5; }
    .consultation-wrapper { box-shadow: none; border: 1px solid #ccc; }
}