/* SafeW 安全加密网站 - 精美科技风格样式 */

/* ========== 基础重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --accent: #f472b6;
    --bg-dark: #030712;
    --bg-card: rgba(17, 24, 39, 0.8);
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border: rgba(255, 255, 255, 0.1);
    --glow: rgba(0, 212, 255, 0.5);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ========== 粒子背景 ========== */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary), var(--secondary));
    border-radius: 4px;
}

/* ========== 容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ========== 头部导航 ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.4s ease;
}

.site-header.scrolled {
    background: rgba(3, 7, 18, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

/* Logo 动画 */
.logo {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--primary);
    text-decoration: none;
    position: relative;
    display: inline-block;
}

.logo::before {
    content: 'SAFEW';
    position: absolute;
    top: 0;
    left: 0;
    color: transparent;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    animation: shine 3s linear infinite;
    opacity: 0;
    transition: opacity 0.3s;
}

.logo:hover::before {
    opacity: 1;
}

.logo:hover {
    text-shadow: 0 0 30px var(--glow);
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

/* 导航菜单 */
.main-nav {
    display: flex;
    gap: 40px;
    align-items: center;
}

.main-nav a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-decoration: none;
    position: relative;
    padding: 8px 0;
    transition: all 0.3s;
}

.main-nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: all 0.3s;
    transform: translateX(-50%);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary);
}

.main-nav a:hover::before,
.main-nav a.active::before {
    width: 100%;
}

/* ========== 英雄区域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

/* 背景光效 */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* 网格线背景 */
.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }
    100% {
        transform: perspective(500px) rotateX(60deg) translateY(60px);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 800px;
}

/* 打字机效果标题 */
.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 13px;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero h1 {
    font-size: 80px;
    font-weight: 800;
    letter-spacing: 15px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
    position: relative;
}

.hero .tagline {
    font-size: 28px;
    color: var(--text-primary);
    font-weight: 300;
    letter-spacing: 8px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero .subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

/* CTA 按钮 */
.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.8s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 60px;
    text-decoration: none;
    transition: all 0.4s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: #fff;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 212, 255, 0.1);
}

/* 向下滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--primary);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scrollDown 2s infinite;
}

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

@keyframes scrollDown {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 功能特性区域 ========== */
.features {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-label {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 20px;
    font-size: 12px;
    color: var(--primary);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 功能卡片网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px 30px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

/* 卡片悬浮光效 */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 212, 255, 0.08) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.feature-card:hover::before,
.feature-card:hover::after {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-12px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 60px rgba(0, 212, 255, 0.1);
}

/* 图标容器 */
.feature-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 28px;
    position: relative;
}

.feature-icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    border-radius: 20px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.4s;
}

.feature-card:hover .feature-icon-bg {
    opacity: 1;
    transform: scale(1);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    fill: var(--primary);
    position: relative;
    z-index: 1;
    transition: transform 0.4s;
}

.feature-card:hover .feature-icon svg {
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px var(--glow));
}

/* 卡片内容 */
.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}

/* 卡片编号 */
.feature-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 48px;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

/* ========== 统计区域 ========== */
.stats-section {
    padding: 80px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.03) 50%, transparent 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    fill: var(--primary);
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* ========== 文章列表区域 ========== */
.articles-section {
    padding: 120px 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.article-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.article-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.article-cover {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.article-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(3, 7, 18, 0.8) 100%);
    z-index: 1;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}

.article-card:hover .article-cover img {
    transform: scale(1.1);
}

/* 文章标签 */
.article-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.9);
    border-radius: 20px;
    font-size: 12px;
    color: #fff;
    font-weight: 600;
}

/* 文章信息 */
.article-info {
    padding: 24px;
}

.article-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-info h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.article-info h3 a:hover {
    color: var(--primary);
}

.article-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.article-meta svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.more-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
}

.more-link:hover {
    gap: 12px;
}

.more-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform 0.3s;
}

.more-link:hover svg {
    transform: translateX(4px);
}

/* ========== 页脚 ========== */
.site-footer {
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--primary);
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 13px;
}

/* ========== 文章详情页 ========== */
.article-page {
    padding: 140px 24px 80px;
    max-width: 900px;
    margin: 0 auto;
}

.article-detail {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    overflow: hidden;
}

.article-detail .article-cover {
    height: 400px;
    border-radius: 0;
}

.article-header {
    padding: 50px 50px 30px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.article-header h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.4;
    letter-spacing: 1px;
}

.article-header .article-meta {
    justify-content: center;
    gap: 30px;
}

.article-content {
    padding: 50px;
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 2;
}

/* 富文本内容样式 */
.article-content h2 {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 600;
    margin: 40px 0 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.article-content h3 {
    color: var(--text-primary);
    font-size: 22px;
    font-weight: 600;
    margin: 30px 0 15px;
}

.article-content h4 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin: 25px 0 10px;
}

.article-content p {
    margin-bottom: 20px;
    line-height: 1.9;
}

.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 30px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.article-content ul, .article-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.article-content blockquote {
    margin: 25px 0;
    padding: 20px 25px;
    background: rgba(0, 212, 255, 0.05);
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.article-content pre {
    background: rgba(0, 0, 0, 0.4);
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
    margin: 20px 0;
}

.article-content code {
    background: rgba(0, 212, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    color: var(--primary);
}

.article-content a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.article-content a:hover {
    border-bottom-color: var(--primary);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
}

.article-content table th,
.article-content table td {
    padding: 12px 15px;
    border: 1px solid var(--border);
    text-align: left;
}

.article-content table th {
    background: rgba(0, 212, 255, 0.1);
    font-weight: 600;
    color: var(--text-primary);
}

.article-content hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 40px 0;
}

.article-footer {
    padding: 30px 50px;
    border-top: 1px solid var(--border);
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s;
}

.back-home:hover {
    color: var(--primary);
}

/* ========== 网站地图页 ========== */
.page-title {
    text-align: center;
    padding: 160px 24px 60px;
}

.page-title h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.page-title p {
    color: var(--text-secondary);
    font-size: 18px;
}

.sitemap-section {
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    margin-bottom: 30px;
}

.sitemap-section h2 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sitemap-section h2 svg {
    width: 24px;
    height: 24px;
    fill: var(--primary);
}

.sitemap-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.sitemap-list li {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.3s;
}

.sitemap-list a {
    color: var(--text-secondary);
    font-size: 15px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sitemap-list a::before {
    content: '→';
    color: var(--primary);
    font-weight: bold;
}

.sitemap-list li:hover {
    border-color: rgba(0, 212, 255, 0.3);
    background: rgba(0, 212, 255, 0.05);
}

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

/* ========== 滚动动画 ========== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 加载动画 ========== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .feature-grid,
    .articles-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 48px;
        letter-spacing: 8px;
    }

    .hero .tagline {
        font-size: 18px;
        letter-spacing: 4px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid,
    .articles-grid,
    .stats-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 32px;
    }

    .sitemap-list {
        grid-template-columns: 1fr;
    }

    .main-nav {
        gap: 20px;
    }

    .article-header,
    .article-content,
    .article-footer {
        padding-left: 24px;
        padding-right: 24px;
    }
}

/* ========== 用户评价区域 ========== */
.testimonials-section {
    padding: 120px 0;
    background: linear-gradient(180deg, transparent 0%, rgba(124, 58, 237, 0.05) 50%, transparent 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 35px;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 120px;
    font-family: Georgia, serif;
    color: rgba(0, 212, 255, 0.05);
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
}

.testimonial-stars svg {
    width: 18px;
    height: 18px;
    fill: #fbbf24;
}

.testimonial-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.author-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.author-title {
    font-size: 13px;
    color: var(--text-secondary);
}