/* 东扬传媒 - AI驱动内容营销网站 */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#e0e7ff;
  --accent:#f59e0b;--text:#1e293b;--text-light:#64748b;
  --bg:#fff;--bg-gray:#f8fafc;--bg-dark:#0f172a;
  --border:#e2e8f0;--radius:12px;--radius-sm:8px;
  --shadow:0 1px 3px rgba(0,0,0,.08);
  --shadow-lg:0 10px 40px rgba(0,0,0,.08);
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.7;background:var(--bg);font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 28px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;cursor:pointer;border:none;transition:all .2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-outline{background:#fff;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-sm{padding:6px 16px;font-size:14px}

.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:8px;font-size:22px;font-weight:700;color:var(--text)}
.logo-icon{font-size:28px}
.nav{display:flex;gap:4px}
.nav-link{padding:8px 16px;border-radius:var(--radius-sm);color:var(--text-light);font-size:15px;font-weight:500}
.nav-link:hover,.nav-link.active{color:var(--primary);background:var(--primary-light)}
.nav-link-cta{background:var(--primary);color:#fff!important}
.nav-link-cta:hover{background:var(--primary-dark)}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text);padding:8px}

.hero{padding:80px 0 60px;background:linear-gradient(135deg,#f0f4ff,#e8f0ff,#fef3e2);text-align:center}
.hero-badge{display:inline-block;padding:6px 16px;border-radius:20px;background:var(--primary-light);color:var(--primary);font-size:14px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:clamp(32px,5vw,48px);font-weight:800;line-height:1.2;margin-bottom:16px}
.hero h1 span{color:var(--primary)}
.hero p{font-size:20px;color:var(--text-light);max-width:600px;margin:0 auto 32px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

.section{padding:80px 0}
.section-gray{background:var(--bg-gray)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:32px;font-weight:700;margin-bottom:12px}
.section-title p{color:var(--text-light);font-size:18px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.card{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;border:1px solid var(--border)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-icon{font-size:40px;margin-bottom:16px;display:block}
.card h3{font-size:20px;margin-bottom:8px;font-weight:700}
.card p{color:var(--text-light);margin-bottom:16px}
.card .price{font-size:28px;font-weight:800;color:var(--primary);margin:8px 0}
.card .price small{font-size:14px;font-weight:400;color:var(--text-light)}

.pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin-top:40px}
.pain-item{display:flex;align-items:flex-start;gap:16px;padding:24px;background:#fff;border-radius:var(--radius);border:1px solid var(--border)}
.pain-emoji{font-size:32px;flex-shrink:0}
.pain-item strong{display:block;margin-bottom:4px}
.pain-item span{color:var(--text-light);font-size:14px}

.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.why-item{text-align:center;padding:32px 20px}
.why-icon{font-size:44px;margin-bottom:12px;display:block}
.why-item h4{font-size:18px;margin-bottom:8px}

.page-hero{padding:60px 0;background:linear-gradient(135deg,var(--primary-light),#f8fafc);text-align:center}
.page-hero h1{font-size:36px;font-weight:800;margin-bottom:8px}
.page-hero p{color:var(--text-light);font-size:18px}

.service-detail{padding:60px 0}
.service-detail .container{max-width:800px}
.service-detail h2{font-size:28px;margin:40px 0 16px}
.service-detail h3{font-size:22px;margin:32px 0 12px}
.service-detail p,.service-detail li{color:var(--text-light);margin-bottom:12px}
.feature-list{list-style:none;padding:0}
.feature-list li{padding:8px 0 8px 28px;position:relative}
.feature-list li::before{content:"✅";position:absolute;left:0}

.pricing-table{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:32px 0}
.pricing-card{background:#fff;border-radius:var(--radius);padding:32px 24px;border:2px solid var(--border);text-align:center;transition:all .2s}
.pricing-card.featured{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light);position:relative}
.pricing-card.featured::before{content:"推荐";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:4px 16px;border-radius:12px;font-size:13px;font-weight:600}
.pricing-card .price{font-size:32px;font-weight:800;color:var(--primary)}
.pricing-card .price small{font-size:14px;font-weight:400;color:var(--text-light)}
.pricing-features{list-style:none;padding:0;margin:20px 0;text-align:left}
.pricing-features li{padding:6px 0;font-size:14px;color:var(--text-light)}
.pricing-features li::before{content:"✓ ";color:var(--primary);font-weight:700}

.blog-grid,.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px}
.blog-card,.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:all .2s}
.blog-card:hover,.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-card-image,.case-card-image{height:200px;background:linear-gradient(135deg,var(--primary-light),#dbeafe);display:flex;align-items:center;justify-content:center;font-size:48px}
.blog-card-body,.case-card-body{padding:24px}
.blog-date,.case-tag{display:inline-block;font-size:13px;color:var(--text-light);margin-bottom:8px}
.blog-card-body h3,.case-card-body h3{font-size:18px;margin-bottom:8px;font-weight:700}
.blog-card-body h3 a{color:var(--text)}
.blog-card-body p,.case-card-body p{color:var(--text-light);font-size:14px;margin-bottom:12px}
.blog-tag{display:inline-block;padding:2px 10px;background:var(--primary-light);color:var(--primary);border-radius:12px;font-size:12px;font-weight:500}
.case-tag{padding:2px 10px;background:#fef3e2;color:var(--accent);border-radius:12px;font-size:12px;font-weight:500}

.article{max-width:760px;margin:60px auto;padding:0 20px}
.article h1{font-size:32px;margin-bottom:16px}
.article-meta{color:var(--text-light);font-size:14px;margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.article-body{font-size:17px;line-height:1.9}
.article-body h2{font-size:24px;margin:40px 0 16px}
.article-body h3{font-size:20px;margin:32px 0 12px}
.article-body p{margin-bottom:20px}
.article-body ul,.article-body ol{margin-bottom:20px;padding-left:24px}
.article-body li{margin-bottom:8px}
.article-body blockquote{border-left:4px solid var(--primary);padding:12px 20px;margin:24px 0;background:var(--bg-gray);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-light)}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:24px;margin-bottom:16px}
.contact-info p{color:var(--text-light);margin-bottom:12px}
.contact-methods{list-style:none;padding:0;margin-top:24px}
.contact-methods li{padding:12px 0;border-bottom:1px solid var(--border);display:flex;gap:12px;align-items:center}
.contact-icon{font-size:24px}
.contact-form{background:#fff;padding:32px;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:15px;font-family:inherit}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-group textarea{min-height:120px;resize:vertical}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-image{height:400px;background:linear-gradient(135deg,var(--primary-light),#dbeafe);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;font-size:100px}
.about-text h2{font-size:28px;margin-bottom:16px}
.about-text p{color:var(--text-light);margin-bottom:16px}

.cta-section{padding:80px 0;text-align:center;background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff}
.cta-section h2{font-size:32px;margin-bottom:12px}
.cta-section p{font-size:18px;opacity:.9;margin-bottom:32px}
.cta-section .btn{background:#fff;color:var(--primary);font-size:18px;padding:14px 40px}
.cta-section .btn:hover{background:var(--bg-gray)}

.ai-chat{position:fixed;bottom:24px;right:24px;z-index:9999}
.ai-chat-toggle{display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:28px;border:none;cursor:pointer;background:var(--primary);color:#fff;font-size:15px;font-weight:600;box-shadow:0 4px 20px rgba(99,102,241,.4);transition:all .2s}
.ai-chat-toggle:hover{transform:scale(1.05)}
.ai-chat-icon{font-size:22px}
.ai-chat-dot{width:8px;height:8px;background:#4ade80;border-radius:50%;display:inline-block}
.ai-chat-panel{display:none;position:absolute;bottom:60px;right:0;width:360px;max-height:520px;background:#fff;border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,.15);overflow:hidden;flex-direction:column}
.ai-chat-panel.open{display:flex}
.ai-chat-header{background:var(--primary);color:#fff;padding:16px;display:flex;align-items:center;gap:8px}
.ai-chat-header small{opacity:.8;font-weight:400}
.ai-chat-close{margin-left:auto;background:none;border:none;color:#fff;font-size:18px;cursor:pointer}
.ai-chat-messages{flex:1;overflow-y:auto;padding:16px;max-height:280px}
.ai-chat-msg{margin-bottom:12px;padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;line-height:1.6;max-width:85%}
.ai-chat-msg-bot{background:var(--bg-gray);margin-right:auto}
.ai-chat-msg-user{background:var(--primary-light);color:var(--text);margin-left:auto}
.ai-chat-quick{padding:8px 16px;display:flex;flex-wrap:wrap;gap:6px;border-top:1px solid var(--border)}
.ai-chat-quick button{padding:6px 12px;border-radius:16px;border:1px solid var(--border);background:#fff;font-size:12px;cursor:pointer;white-space:nowrap;transition:all .2s}
.ai-chat-quick button:hover{background:var(--primary-light);border-color:var(--primary)}
.ai-chat-input{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}
.ai-chat-input input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:20px;font-size:14px;outline:none}
.ai-chat-input input:focus{border-color:var(--primary)}
.ai-chat-input button{padding:8px 16px;border-radius:20px;border:none;background:var(--primary);color:#fff;cursor:pointer;font-size:13px}

.footer{background:var(--bg-dark);color:#cbd5e1;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:32px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col p{font-size:14px;margin-bottom:6px;line-height:1.8}
.footer-col a{display:block;color:#94a3b8;font-size:14px;padding:3px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1e293b;padding-top:24px;text-align:center;font-size:13px;color:#64748b}
.footer-bottom a{color:#64748b}

@media(max-width:768px){
.nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg)}
.nav.open{display:flex}
.mobile-menu-btn{display:block}
.hero{padding:48px 0 36px}
.hero h1{font-size:28px}
.section{padding:48px 0}
.contact-grid,.about-grid{grid-template-columns:1fr}
.ai-chat-panel{width:calc(100vw - 40px);right:-8px}
.blog-grid,.case-grid,.cards{grid-template-columns:1fr}
}