/* 云速成AI建站 - 完整样式表 */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --radius: 16px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; text-decoration: none; transition: all 0.3s; cursor: pointer; border: none; white-space: nowrap; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5); }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-outline-light { background: rgba(255,255,255,0.1); color: #fff; border: 1.5px solid rgba(255,255,255,0.3); }
.btn-outline-light:hover { background: rgba(255,255,255,0.2); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--primary); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-2px); }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-block { width: 100%; }

/* 导航栏 */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: all 0.3s; }
.header.scrolled { background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 12px 0; }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon { width: 40px; height: 40px; }
.logo-icon svg { width: 100%; height: 100%; }
.logo-text { font-size: 20px; font-weight: 800; color: var(--text); }
.logo-text small { font-weight: 500; color: var(--text-muted); margin-left: 4px; }
.nav { display: flex; gap: 36px; }
.nav a { color: var(--text-secondary); text-decoration: none; font-size: 15px; font-weight: 500; transition: color 0.2s; position: relative; }
.nav a:hover, .nav a.active { color: var(--primary); }
.nav a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--primary); transition: width 0.3s; }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { width: 24px; height: 2px; background: var(--text); transition: all 0.3s; }
.mobile-nav { display: none; position: fixed; top: 72px; left: 0; right: 0; background: #fff; padding: 24px; border-bottom: 1px solid var(--border); flex-direction: column; gap: 16px; z-index: 999; }
.mobile-nav.active { display: flex; }
.mobile-nav a { padding: 12px 0; color: var(--text); text-decoration: none; font-weight: 500; border-bottom: 1px solid var(--border); }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-gradient { position: absolute; inset: 0; background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent), radial-gradient(ellipse 60% 40% at 80% 50%, rgba(139, 92, 246, 0.1), transparent); }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px); background-size: 60px 60px; }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(80px); animation: float 20s infinite ease-in-out; }
.hero-orb-1 { width: 600px; height: 600px; background: rgba(99, 102, 241, 0.15); top: -20%; left: -10%; }
.hero-orb-2 { width: 400px; height: 400px; background: rgba(139, 92, 246, 0.12); top: 40%; right: -5%; animation-delay: -5s; }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 33% { transform: translate(30px, -30px); } 66% { transform: translate(-20px, 20px); } }
.hero-content { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; position: relative; z-index: 1; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px; background: rgba(99, 102, 241, 0.1); border: 1px solid rgba(99, 102, 241, 0.2); border-radius: 100px; font-size: 14px; font-weight: 500; color: var(--primary); margin-bottom: 32px; }
.hero-badge-dot { width: 8px; height: 8px; background: var(--primary); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.hero-title { font-size: clamp(36px, 5vw, 64px); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 28px; }
.hero-title-line { display: block; }
.hero-title-gradient { background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: 18px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 40px; max-width: 540px; }
.hero-desc strong { color: var(--text); font-weight: 600; }
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; }
.hero-terminal { background: var(--bg-dark); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-xl); max-width: 500px; }
.terminal-header { display: flex; align-items: center; gap: 12px; padding: 14px 20px; background: rgba(255,255,255,0.05); border-bottom: 1px solid rgba(255,255,255,0.1); }
.terminal-dots { display: flex; gap: 8px; }
.terminal-dots span { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dots span:first-child { background: #ff5f57; }
.terminal-dots span:nth-child(2) { background: #ffbd2e; }
.terminal-dots span:nth-child(3) { background: #28c840; }
.terminal-title { font-size: 13px; color: rgba(255,255,255,0.5); }
.terminal-body { padding: 20px; font-family: 'SF Mono', Monaco, monospace; font-size: 14px; }
.terminal-line { display: flex; gap: 12px; margin-bottom: 8px; }
.terminal-prompt { color: #10b981; }
.terminal-cmd { color: #e2e8f0; }
.terminal-success { color: #10b981; }
.hero-right { position: relative; }
.hero-visual { position: relative; height: 500px; }
.visual-card { position: absolute; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); overflow: hidden; }
.visual-card-main { width: 380px; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 2; }
.visual-card-header { display: flex; align-items: center; gap: 16px; padding: 24px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; }
.visual-avatar { width: 56px; height: 56px; background: rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 800; }
.visual-name { font-size: 18px; font-weight: 700; }
.visual-role { font-size: 13px; opacity: 0.8; }
.visual-card-body { padding: 24px; }
.visual-chat { display: flex; flex-direction: column; gap: 16px; }
.visual-msg { padding: 14px 18px; border-radius: 16px; font-size: 14px; }
.visual-msg-user { background: var(--bg-light); align-self: flex-end; max-width: 80%; }
.visual-msg-ai { background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1)); border: 1px solid rgba(99, 102, 241, 0.2); max-width: 90%; }
.ai-typing { display: flex; gap: 4px; margin-bottom: 8px; }
.ai-typing span { width: 6px; height: 6px; background: var(--primary); border-radius: 50%; animation: typing 1.4s infinite; }
.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-8px); opacity: 1; } }
.visual-card-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.visual-platforms { display: flex; gap: 8px; }
.platform-tag { padding: 6px 14px; background: var(--bg-light); border-radius: 100px; font-size: 12px; font-weight: 500; color: var(--text-secondary); }
.visual-card-float { padding: 16px 20px; display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 600; animation: floatCard 6s infinite ease-in-out; }
.visual-card-float-1 { top: 15%; left: 5%; }
.visual-card-float-2 { top: 45%; right: 0; animation-delay: -2s; }
.visual-card-float-3 { bottom: 15%; left: 10%; animation-delay: -4s; }
@keyframes floatCard { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.float-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.float-icon svg { width: 18px; height: 18px; color: #fff; }

/* Trust Bar */
.trust-bar { padding: 40px 0; border-bottom: 1px solid var(--border); }
.trust-bar-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.trust-bar-label { font-size: 14px; color: var(--text-muted); font-weight: 500; }
.trust-bar-logos { display: flex; gap: 48px; }
.trust-logo span { display: block; font-size: 18px; font-weight: 700; }
.trust-logo small { display: block; font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* Section Header */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag { display: inline-block; padding: 6px 16px; background: rgba(99, 102, 241, 0.1); color: var(--primary); border-radius: 100px; font-size: 13px; font-weight: 600; margin-bottom: 20px; }
.section-title { font-size: clamp(32px, 4vw, 48px); font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.text-gradient { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.text-gradient-light { background: linear-gradient(135deg, #fff, rgba(255,255,255,0.7)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { font-size: 18px; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* Features Preview */
.features-preview { padding: 100px 0; background: var(--bg-light); }
.features-preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-preview-card { background: #fff; border-radius: var(--radius-lg); padding: 40px; border: 1px solid var(--border); transition: all 0.3s; }
.feature-preview-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 24px; }
.feature-icon svg { width: 28px; height: 28px; }
.feature-icon-chat { background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1)); color: var(--primary); }
.feature-icon-cli { background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.1)); color: var(--success); }
.feature-icon-gui { background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.1)); color: #f59e0b; }
.feature-preview-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.feature-preview-card p { color: var(--text-secondary); font-size: 15px; margin-bottom: 20px; }
.feature-link { color: var(--primary); text-decoration: none; font-weight: 500; }
.feature-link:hover { text-decoration: underline; }

/* CTA Section */
.cta-section { padding: 100px 0; }
.cta-card { background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: var(--radius-lg); padding: 80px; text-align: center; }
.cta-content h2 { font-size: 40px; font-weight: 800; color: #fff; margin-bottom: 20px; }
.cta-content p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; }

/* Page Header */
.page-main { padding-top: 80px; }
.page-header { padding: 80px 0; text-align: center; background: var(--bg-light); }
.page-title { font-size: clamp(36px, 5vw, 56px); font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.page-desc { font-size: 18px; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* Feature Detail */
.feature-detail { padding: 100px 0; }
.feature-detail:nth-child(even) { background: var(--bg-light); }
.feature-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.feature-detail-reverse .feature-detail-grid { direction: rtl; }
.feature-detail-reverse .feature-detail-grid > * { direction: ltr; }
.feature-detail-content h2 { font-size: 36px; font-weight: 800; margin-bottom: 20px; }
.feature-detail-content p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }
.feature-list { list-style: none; }
.feature-list li { display: flex; align-items: center; gap: 12px; padding: 12px 0; font-size: 15px; }
.feature-list li svg { width: 20px; height: 20px; color: var(--success); flex-shrink: 0; }
.feature-detail-demo { position: relative; }
.demo-chat-window { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.demo-chat-header { padding: 16px 24px; background: var(--bg-light); border-bottom: 1px solid var(--border); font-weight: 600; }
.demo-chat-body { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.chat-bubble { padding: 14px 18px; border-radius: 16px; font-size: 14px; }
.chat-bubble-user { background: var(--primary); color: #fff; align-self: flex-end; max-width: 80%; }
.chat-bubble-ai { background: var(--bg-light); border: 1px solid var(--border); max-width: 85%; }
.chat-name { display: block; font-size: 11px; font-weight: 600; text-transform: uppercase; margin-bottom: 6px; opacity: 0.7; }
.chat-actions { display: flex; gap: 8px; margin-top: 12px; }
.chat-action { padding: 6px 12px; background: #fff; border-radius: 6px; font-size: 12px; color: var(--primary); font-weight: 500; }
.demo-terminal { background: var(--bg-dark); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-xl); }
.demo-terminal .terminal-body { padding: 24px; }
.demo-terminal .terminal-line { color: #e2e8f0; margin-bottom: 12px; }
.terminal-output { color: var(--text-muted); font-style: italic; }
.demo-versions { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.demo-versions-header { padding: 16px 24px; background: var(--bg-light); border-bottom: 1px solid var(--border); font-weight: 600; }
.demo-versions-list { padding: 24px; }
.version-item { display: flex; align-items: center; gap: 16px; padding: 16px; border-radius: var(--radius-sm); margin-bottom: 8px; transition: background 0.2s; }
.version-item:hover { background: var(--bg-light); }
.version-item.active { background: rgba(99, 102, 241, 0.05); }
.version-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--border); flex-shrink: 0; }
.version-item.active .version-dot { background: var(--success); }
.version-info strong { display: block; font-size: 14px; margin-bottom: 4px; }
.version-info small { font-size: 12px; color: var(--text-muted); }

/* Services */
.services-features { padding: 100px 0; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.service-card-large { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; transition: all 0.3s; }
.service-card-large:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.service-card-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 24px; }
.service-num { font-size: 48px; font-weight: 900; background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.service-icon { width: 48px; height: 48px; background: rgba(99, 102, 241, 0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary); }
.service-icon svg { width: 24px; height: 24px; }
.service-card-large h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.service-card-large p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }
.service-flow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding-top: 24px; border-top: 1px solid var(--border); }
.flow-step { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--bg-light); border-radius: 100px; font-size: 13px; }
.flow-num { width: 20px; height: 20px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; }
.flow-step-done .flow-num { background: var(--success); }
.flow-arrow { color: var(--text-muted); }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 24px; border-top: 1px solid var(--border); }
.service-tag { padding: 8px 16px; background: var(--bg-light); border-radius: 100px; font-size: 13px; color: var(--text-secondary); }
.service-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-top: 24px; border-top: 1px solid var(--border); }
.service-stat { text-align: center; }
.service-stat .stat-value { font-size: 20px; font-weight: 700; color: var(--primary); }
.service-stat .stat-label { font-size: 12px; color: var(--text-muted); }

/* Products */
.products-section { padding: 100px 0; background: var(--bg-light); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.product-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; text-align: center; transition: all 0.3s; position: relative; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.product-card-featured { border-color: var(--primary); }
.product-badge { position: absolute; top: 20px; right: 20px; padding: 4px 12px; background: var(--primary); color: #fff; border-radius: 100px; font-size: 12px; font-weight: 600; }
.product-icon { width: 64px; height: 64px; background: rgba(99, 102, 241, 0.1); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; color: var(--primary); }
.product-icon svg { width: 32px; height: 32px; }
.product-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.product-card p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }
.product-card ul { list-style: none; text-align: left; margin-bottom: 32px; }
.product-card li { padding: 8px 0; font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.product-card li::before { content: '✓'; color: var(--success); font-weight: 700; }

/* Partners */
.partners-stats { padding: 80px 0; background: var(--bg-dark); }
.partners-stats .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.partners-stats .stat-card { text-align: center; padding: 40px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg); }
.partners-stats .stat-number { font-size: 48px; font-weight: 900; color: #fff; margin-bottom: 8px; }
.partners-stats .stat-label { color: rgba(255,255,255,0.6); font-size: 15px; }
.partners-detail { padding: 100px 0; }
.partner-detail-card { display: flex; gap: 40px; padding: 40px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); margin-bottom: 32px; }
.partner-detail-logo { font-size: 24px; font-weight: 800; color: var(--primary); min-width: 150px; display: flex; align-items: center; justify-content: center; background: rgba(99, 102, 241, 0.05); border-radius: var(--radius); }
.partner-detail-content h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.partner-detail-content p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.partner-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.partner-tags span { padding: 6px 14px; background: var(--bg-light); border-radius: 100px; font-size: 13px; color: var(--text-secondary); }
.partners-advantages { padding: 100px 0; background: var(--bg-light); }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; text-align: center; border: 1px solid var(--border); }
.advantage-icon { width: 56px; height: 56px; background: rgba(99, 102, 241, 0.1); border-radius: 14px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; color: var(--primary); }
.advantage-icon svg { width: 28px; height: 28px; }
.advantage-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.advantage-card p { color: var(--text-secondary); font-size: 14px; }
.partners-cta { padding: 100px 0; }
.partners-cta .cta-card { text-align: center; }

/* About */
.about-intro { padding: 100px 0; }
.about-intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-intro-content h2 { font-size: 36px; font-weight: 800; margin-bottom: 24px; }
.about-intro-content p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 32px; }
.about-highlight { display: flex; gap: 24px; padding: 32px; background: rgba(99, 102, 241, 0.05); border-radius: var(--radius-lg); border: 1px solid rgba(99, 102, 241, 0.1); }
.highlight-number { font-size: 64px; font-weight: 900; color: var(--primary); line-height: 1; }
.highlight-text strong { display: block; font-size: 18px; margin-bottom: 8px; }
.highlight-text p { font-size: 14px; color: var(--text-secondary); margin: 0; }
.about-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); overflow: hidden; }
.about-card-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; background: var(--bg-light); border-bottom: 1px solid var(--border); }
.about-card-header span:first-child { font-size: 12px; color: var(--text-muted); }
.about-card-no { font-size: 14px; font-weight: 700; color: var(--primary); }
.about-card-body { padding: 40px; text-align: center; }
.about-avatar { width: 80px; height: 80px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 32px; font-weight: 800; color: #fff; }
.about-card-body h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.about-card-body p { color: var(--text-secondary); margin-bottom: 24px; }
.about-platforms { display: flex; justify-content: center; gap: 8px; }
.about-platforms span { padding: 8px 16px; background: var(--bg-light); border-radius: 100px; font-size: 13px; }
.about-timeline { padding: 100px 0; background: var(--bg-light); }
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: var(--border); transform: translateX(-50%); }
.timeline-item { position: relative; padding: 20px 0; display: flex; align-items: center; }
.timeline-item:nth-child(odd) { justify-content: flex-start; padding-right: 50%; }
.timeline-item:nth-child(even) { justify-content: flex-end; padding-left: 50%; }
.timeline-dot { position: absolute; left: 50%; width: 16px; height: 16px; background: var(--primary); border-radius: 50%; transform: translateX(-50%); border: 3px solid #fff; box-shadow: 0 0 0 3px var(--primary); }
.timeline-content { padding: 24px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); width: calc(50% - 40px); }
.timeline-year { display: inline-block; padding: 4px 12px; background: var(--primary); color: #fff; border-radius: 100px; font-size: 12px; font-weight: 600; margin-bottom: 12px; }
.timeline-content h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.timeline-content p { font-size: 14px; color: var(--text-secondary); }
.about-team { padding: 100px 0; }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card { text-align: center; padding: 40px 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.team-avatar { width: 64px; height: 64px; background: rgba(99, 102, 241, 0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; color: var(--primary); }
.team-avatar svg { width: 32px; height: 32px; }
.team-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.team-card p { color: var(--text-secondary); font-size: 14px; }
.about-contact { padding: 100px 0; background: var(--bg-light); }
.contact-card { max-width: 600px; margin: 0 auto; padding: 48px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); text-align: center; }
.contact-card h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.contact-card > p { color: var(--text-secondary); margin-bottom: 32px; }
.contact-items { display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; align-items: center; gap: 16px; justify-content: center; }
.contact-item svg { width: 20px; height: 20px; color: var(--primary); }

/* Auth Pages */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 120px 24px 80px; background: var(--bg-light); }
.auth-container { width: 100%; max-width: 440px; }
.auth-card { background: #fff; border-radius: var(--radius-lg); padding: 48px; box-shadow: var(--shadow-lg); }
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-header .logo { justify-content: center; margin-bottom: 24px; }
.auth-header h1 { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.auth-header p { color: var(--text-secondary); }
.auth-form .form-group { margin-bottom: 20px; }
.auth-form label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.auth-form input { width: 100%; padding: 14px 16px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: 15px; transition: all 0.2s; }
.auth-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1); }
.form-options { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
.checkbox-label input { width: auto; }
.forgot-link { font-size: 14px; color: var(--primary); text-decoration: none; }
.auth-footer { text-align: center; margin-top: 24px; font-size: 14px; color: var(--text-secondary); }
.auth-footer a { color: var(--primary); text-decoration: none; font-weight: 500; }
.auth-divider { display: flex; align-items: center; gap: 16px; margin: 24px 0; color: var(--text-muted); font-size: 13px; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.test-account { background: var(--bg-light); border-radius: var(--radius-sm); padding: 16px; font-size: 13px; color: var(--text-secondary); }
.test-account p { margin: 4px 0; }

/* Dashboard */
.dashboard-page { min-height: 100vh; padding-top: 80px; background: var(--bg-light); }
.dashboard-container { display: flex; min-height: calc(100vh - 80px); }
.dashboard-sidebar { width: 260px; background: #fff; border-right: 1px solid var(--border); padding: 24px 0; position: fixed; top: 80px; bottom: 0; overflow-y: auto; }
.sidebar-header { display: flex; align-items: center; gap: 12px; padding: 0 24px 24px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.user-avatar { width: 48px; height: 48px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; font-weight: 700; }
.user-info h3 { font-size: 15px; font-weight: 600; }
.user-info p { font-size: 12px; color: var(--text-muted); }
.sidebar-nav { display: flex; flex-direction: column; }
.sidebar-nav a { display: flex; align-items: center; gap: 12px; padding: 12px 24px; color: var(--text-secondary); text-decoration: none; font-size: 14px; font-weight: 500; transition: all 0.2s; }
.sidebar-nav a:hover { background: var(--bg-light); color: var(--primary); }
.sidebar-nav a.active { background: rgba(99, 102, 241, 0.1); color: var(--primary); }
.sidebar-nav a svg { width: 20px; height: 20px; }
.dashboard-main { flex: 1; margin-left: 260px; padding: 32px; }
.dashboard-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.dashboard-header h1 { font-size: 28px; font-weight: 800; }
.dashboard-header p { color: var(--text-secondary); margin-top: 4px; }
.stats-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }
.stats-cards .stat-card { display: flex; align-items: center; gap: 16px; padding: 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); }
.stat-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; }
.stat-icon svg { width: 24px; height: 24px; color: #fff; }
.stat-icon-article { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.stat-icon-video { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.stat-icon-moment { background: linear-gradient(135deg, #10b981, #059669); }
.stat-content .stat-value { font-size: 28px; font-weight: 800; display: block; }
.stat-content .stat-label { font-size: 13px; color: var(--text-muted); }
.quick-actions { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 24px; margin-bottom: 32px; }
.quick-actions h2 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.action-buttons { display: flex; gap: 12px; }
.action-btn { display: flex; align-items: center; gap: 8px; padding: 12px 20px; background: var(--bg-light); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; transition: all 0.2s; font-size: 14px; font-weight: 500; }
.action-btn:hover { border-color: var(--primary); color: var(--primary); }
.action-btn svg { width: 18px; height: 18px; }
.recent-section { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); padding: 24px; }
.recent-section h2 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.empty-text { text-align: center; padding: 40px; color: var(--text-muted); }

/* Content List */
.content-list { display: flex; flex-direction: column; gap: 16px; }
.content-item { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); transition: all 0.2s; }
.content-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.content-info h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.content-info p { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.content-date { font-size: 12px; color: var(--text-muted); }
.content-actions { display: flex; gap: 8px; }
.btn-icon { width: 36px; height: 36px; border-radius: 8px; border: none; background: var(--bg-light); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.btn-icon svg { width: 18px; height: 18px; }
.btn-delete:hover { background: #fef2f2; color: var(--danger); }
.empty-state { text-align: center; padding: 60px 24px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); }
.empty-state svg { width: 48px; height: 48px; color: var(--text-muted); margin-bottom: 16px; }
.empty-state p { color: var(--text-secondary); margin-bottom: 24px; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; }
.modal.active { display: flex; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); }
.modal-content { position: relative; width: 100%; max-width: 500px; background: #fff; border-radius: var(--radius-lg); padding: 32px; margin: 24px; max-height: 90vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.modal-header h3 { font-size: 20px; font-weight: 700; }
.modal-close { width: 32px; height: 32px; border-radius: 8px; border: none; background: var(--bg-light); cursor: pointer; display: flex; align-items: center; justify-content: center; }
.modal-close svg { width: 18px; height: 18px; }
.modal-form .form-group { margin-bottom: 20px; }
.modal-form label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.modal-form input, .modal-form textarea { width: 100%; padding: 12px 16px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: 14px; }
.modal-form textarea { resize: vertical; font-family: inherit; }
.modal-form input:focus, .modal-form textarea:focus { outline: none; border-color: var(--primary); }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; }

/* Back to Top */
.back-to-top { position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px; background: var(--primary); color: #fff; border: none; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.3s; box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4); z-index: 100; }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5); }
.back-to-top svg { width: 20px; height: 20px; }

/* Footer */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 80px 0 40px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 2fr; gap: 80px; padding-bottom: 60px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); max-width: 300px; }
.footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 20px; }
.footer-col a { display: block; color: rgba(255,255,255,0.5); text-decoration: none; font-size: 14px; padding: 6px 0; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { padding-top: 32px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-legal { display: flex; gap: 24px; }
.footer-legal a { color: rgba(255,255,255,0.4); text-decoration: none; }
.footer-legal a:hover { color: #fff; }

/* Toast */
.toast { position: fixed; top: 100px; left: 50%; transform: translateX(-50%) translateY(-20px); display: flex; align-items: center; gap: 12px; padding: 16px 24px; background: #fff; border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.15); z-index: 10000; opacity: 0; transition: all 0.3s; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast svg { width: 20px; height: 20px; }
.toast-success svg { color: var(--success); }
.toast-error svg { color: var(--danger); }
.toast span { font-size: 14px; font-weight: 500; }

/* 响应式 */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-right { display: none; }
    .hero-desc { margin: 0 auto 40px; }
    .hero-actions { justify-content: center; }
    .hero-terminal { margin: 0 auto; }
    .features-preview-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .partners-stats .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-detail-grid { grid-template-columns: 1fr; }
    .feature-detail-reverse .feature-detail-grid { direction: ltr; }
    .about-intro-grid { grid-template-columns: 1fr; }
    .about-intro-visual { order: -1; }
    .timeline::before { left: 20px; }
    .timeline-item { padding-left: 60px !important; padding-right: 0 !important; justify-content: flex-start !important; }
    .timeline-dot { left: 20px; }
    .timeline-content { width: 100%; }
    .footer-top { grid-template-columns: 1fr; }
    .dashboard-sidebar { display: none; }
    .dashboard-main { margin-left: 0; }
    .stats-cards { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav { display: none; }
    .header-actions { display: none; }
    .menu-toggle { display: flex; }
    .hero { padding: 100px 0 60px; }
    .hero-title { font-size: 32px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .trust-bar-inner { flex-direction: column; text-align: center; }
    .trust-bar-logos { flex-wrap: wrap; justify-content: center; }
    .partners-stats .stats-grid { grid-template-columns: 1fr 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .partner-detail-card { flex-direction: column; }
    .partner-detail-logo { min-width: auto; padding: 20px; }
    .action-buttons { flex-direction: column; }
    .footer-nav { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}