/* CFspider - 主样式表 */

:root {
    --bg-dark: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --accent-cyan: #00d4ff;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-green: #10b981;
    --accent-orange: #f97316;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #1e293b;
    --gradient-1: linear-gradient(135deg, #00d4ff 0%, #a855f7 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #10b981 0%, #00d4ff 100%);
}

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

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* 背景效果 */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.bg-glow-1 {
    top: -200px;
    right: -200px;
    background: var(--accent-cyan);
}

.bg-glow-2 {
    bottom: -200px;
    left: -200px;
    background: var(--accent-purple);
}

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

/* 导航 */
nav {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.8);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-cyan);
}

.version-badge {
    background: var(--gradient-2);
    color: #000;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Hero 区域 */
.hero {
    padding: 100px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero h1 span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
}

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

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--gradient-1);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

/* 统计数据 */
.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 60px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

/* 特性卡片 */
.features {
    padding: 80px 0;
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 60px;
}

.section-title span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-icon.cyan { background: rgba(0, 212, 255, 0.15); }
.feature-icon.cyan svg { stroke: var(--accent-cyan); }
.feature-icon.purple { background: rgba(168, 85, 247, 0.15); }
.feature-icon.purple svg { stroke: var(--accent-purple); }
.feature-icon.pink { background: rgba(236, 72, 153, 0.15); }
.feature-icon.pink svg { stroke: var(--accent-pink); }
.feature-icon.green { background: rgba(16, 185, 129, 0.15); }
.feature-icon.green svg { stroke: var(--accent-green); }
.feature-icon.orange { background: rgba(249, 115, 22, 0.15); }
.feature-icon.orange svg { stroke: var(--accent-orange); }

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.feature-card.highlight-new {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(168, 85, 247, 0.1));
    border-color: var(--accent-cyan);
    position: relative;
}

.feature-card.highlight-new::before {
    content: "NEW";
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--gradient-1);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 4px;
}

/* 代码示例 */
.code-section {
    padding: 80px 0;
    background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.02), transparent);
}

.code-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.code-info h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.code-info h2 span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.code-info p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.code-features {
    list-style: none;
}

.code-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.code-features li:last-child {
    border-bottom: none;
}

.check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.check-icon svg {
    width: 14px;
    height: 14px;
    stroke: var(--accent-green);
}

.code-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.code-dots {
    display: flex;
    gap: 8px;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27c93f; }

.code-lang {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
}

.code-copy {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
}

.code-copy svg {
    width: 16px;
    height: 16px;
}

.code-copy:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-cyan);
}

pre {
    padding: 24px;
    overflow-x: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
}

.code-keyword { color: var(--accent-purple); }
.code-string { color: var(--accent-green); }
.code-comment { color: var(--text-muted); }
.code-function { color: var(--accent-cyan); }
.code-param { color: var(--accent-orange); }

/* 双层代理 */
.two-proxy {
    padding: 80px 0;
}

.proxy-flow {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    margin-top: 40px;
}

.flow-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.flow-node {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--accent-cyan);
    border-radius: 12px;
    padding: 16px 24px;
    text-align: center;
    min-width: 120px;
}

.flow-node.highlight {
    background: rgba(168, 85, 247, 0.1);
    border-color: var(--accent-purple);
}

.flow-node svg {
    width: 32px;
    height: 32px;
    margin-bottom: 8px;
}

.flow-node.highlight svg {
    stroke: var(--accent-purple);
}

.flow-arrow {
    color: var(--text-muted);
    font-size: 1.5rem;
}

.flow-arrow svg {
    width: 24px;
    height: 24px;
    stroke: var(--text-muted);
}

.proxy-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 32px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.benefit-item svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* 客户端支持 */
.clients {
    padding: 80px 0;
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 40px;
}

.client-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s;
}

.client-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

.client-card svg {
    width: 40px;
    height: 40px;
    margin-bottom: 12px;
    stroke: var(--accent-cyan);
}

.client-name {
    font-weight: 600;
}

.client-platform {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* 快速开始 */
.quickstart {
    padding: 80px 0;
    background: linear-gradient(180deg, transparent, rgba(168, 85, 247, 0.02), transparent);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    position: relative;
}

.step-number {
    position: absolute;
    top: -16px;
    left: 32px;
    width: 32px;
    height: 32px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #000;
}

.step-card h3 {
    margin-bottom: 12px;
    margin-top: 8px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.step-code {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 12px 16px;
    margin-top: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-cyan);
    overflow-x: auto;
}

/* 费用说明 */
.pricing {
    padding: 80px 0;
    background: linear-gradient(180deg, transparent, rgba(16, 185, 129, 0.02), transparent);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.free {
    border-color: var(--accent-green);
}

.pricing-card.free:hover {
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.15);
}

.pricing-card.paid:hover {
    border-color: var(--accent-purple);
}

.pricing-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.pricing-header svg {
    width: 28px;
    height: 28px;
}

.pricing-label {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.free-label {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.paid-label {
    background: rgba(168, 85, 247, 0.15);
    color: var(--accent-purple);
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.pricing-card > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.pricing-features {
    list-style: none;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.pricing-features li svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* 推荐服务 */
.recommendations {
    padding: 80px 0;
}

.rec-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 40px;
    margin-bottom: 20px;
    padding-left: 12px;
    border-left: 3px solid var(--accent-cyan);
}

.rec-subtitle:first-of-type {
    margin-top: 0;
}

.rec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.rec-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s;
}

.rec-card:hover {
    border-color: var(--accent-purple);
}

.rec-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.rec-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(168, 85, 247, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}

.rec-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent-purple);
}

.rec-name {
    font-size: 1.25rem;
    font-weight: 600;
}

.rec-type {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.rec-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.rec-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: gap 0.3s;
}

.rec-link svg {
    width: 16px;
    height: 16px;
}

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

.rec-card.free-tag {
    border-color: var(--accent-green);
}

.rec-card.free-tag:hover {
    border-color: var(--accent-green);
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.15);
}

.rec-icon.green {
    background: rgba(16, 185, 129, 0.15);
}

.rec-icon.green svg {
    stroke: var(--accent-green);
}

.free-text {
    color: var(--accent-green);
}

/* Footer */
footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

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

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

.footer-credit {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 24px;
}

.footer-credit a {
    color: var(--accent-cyan);
    text-decoration: none;
}

/* 卡片动画 */
.animate-ready {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 智能浏览器 Section */
.smart-browser {
    padding: 100px 0;
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.08) 0%, rgba(168, 85, 247, 0.03) 50%, transparent 100%);
    position: relative;
}

.smart-browser::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.new-badge {
    display: inline-block;
    background: linear-gradient(135deg, #10b981, #00d4ff);
    color: #000;
    font-size: 0.65rem;
    padding: 5px 12px;
    border-radius: 20px;
    vertical-align: middle;
    margin-left: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.4); }
    50% { box-shadow: 0 0 30px rgba(0, 212, 255, 0.7); }
}

.browser-demo {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
    align-items: start;
}

.demo-chat {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(17, 24, 39, 0.8) 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 212, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.demo-chat::before {
    content: 'AI 对话演示';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 12px 20px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    color: #000;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.demo-chat > .chat-bubble:first-child {
    margin-top: 40px;
}

.chat-bubble {
    padding: 14px 18px;
    border-radius: 16px;
    max-width: 88%;
    font-size: 0.95rem;
    line-height: 1.6;
    animation: fadeInUp 0.3s ease;
}

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

.chat-bubble.user {
    background: linear-gradient(135deg, var(--accent-cyan), #00b4d8);
    color: #000;
    align-self: flex-end;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    border-radius: 16px 16px 4px 16px;
}

.chat-bubble.ai {
    background: linear-gradient(135deg, var(--bg-card-hover), rgba(30, 41, 59, 0.8));
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px 16px 16px 4px;
}

.tool-call {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 12px;
    font-size: 0.78rem;
    color: var(--accent-purple);
    font-family: 'JetBrains Mono', monospace;
    background: rgba(168, 85, 247, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.browser-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.browser-feature {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(17, 24, 39, 0.6) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.browser-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.browser-feature:hover {
    border-color: var(--accent-cyan);
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

.browser-feature:hover::before {
    opacity: 1;
}

.browser-feature h4 {
    color: var(--accent-cyan);
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.browser-feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.browser-install {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(17, 24, 39, 0.9) 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 36px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.install-code {
    position: relative;
}

.install-code .code-header {
    background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan));
    color: #000;
    padding: 10px 16px;
    border-radius: 12px 12px 0 0;
    font-weight: 600;
    font-size: 0.85rem;
}

.install-code pre {
    background: #0d1117;
    border-radius: 0 0 12px 12px;
    padding: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--accent-green);
    overflow-x: auto;
    margin: 0;
    border: 1px solid var(--border-color);
    border-top: none;
}

.install-code pre code {
    line-height: 1.8;
}

.ai-providers {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.ai-providers h4 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 600;
}

.provider-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.provider-tag {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 18px;
    border-radius: 25px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.provider-tag:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.provider-tag.local {
    background: linear-gradient(135deg, #10b981, #00d4ff);
    color: #000;
    font-weight: 700;
    border: none;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
    animation: pulse-glow 2s ease-in-out infinite;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .stats {
        flex-wrap: wrap;
        gap: 32px;
    }
    
    .code-container {
        grid-template-columns: 1fr;
    }
    
    .flow-diagram {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .browser-demo {
        grid-template-columns: 1fr;
    }
    
    .browser-features {
        grid-template-columns: 1fr;
    }
    
    .browser-install {
        grid-template-columns: 1fr;
    }
}