/* 杏吧原创视频官网 - 全局样式 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0b1e;--bg-card:#12132a;--bg-hover:#1a1c3a;
  --text:#e8e8f0;--text-muted:#9898b0;
  --accent:#ff6b35;--accent2:#e84393;--accent3:#6c5ce7;
  --gradient:linear-gradient(135deg,#ff6b35,#e84393,#6c5ce7);
  --radius:12px;--shadow:0 4px 24px rgba(0,0,0,.4);
  --max-w:1200px;--header-h:64px
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent2)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,11,30,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:700;color:#fff}
.logo img{width:36px;height:36px;border-radius:8px}
.nav-main{display:flex;gap:4px}
.nav-main a{padding:8px 14px;border-radius:8px;color:var(--text-muted);font-size:.9rem;white-space:nowrap}
.nav-main a:hover,.nav-main a.active{color:#fff;background:var(--bg-hover)}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:4px}

/* Hero */
.hero{padding:60px 0 40px;text-align:center;background:radial-gradient(ellipse at 50% 0%,rgba(108,92,231,.15),transparent 70%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:16px;line-height:1.3}
.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:720px;margin:0 auto 28px}
.hero-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:32px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--bg-card);border:1px solid rgba(255,255,255,.08);border-radius:20px;font-size:.85rem;color:var(--text-muted)}
.badge strong{color:var(--accent)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:1rem;font-weight:600;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 16px rgba(232,67,147,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(232,67,147,.4);color:#fff}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.15);color:var(--text)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* Sections */
section{padding:48px 0}
.section-title{font-size:1.6rem;margin-bottom:8px;color:#fff}
.section-subtitle{color:var(--text-muted);margin-bottom:32px;font-size:.95rem}
.section-title span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.06);transition:transform .3s,border-color .3s}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(255,107,53,.3)}
.feature-card img{width:100%;aspect-ratio:9/16;object-fit:cover;object-position:top}
.feature-card-body{padding:18px}
.feature-card h3{font-size:1.05rem;margin-bottom:8px;color:#fff}
.feature-card p{font-size:.88rem;color:var(--text-muted);line-height:1.6}

/* Content blocks */
.content-block{background:var(--bg-card);border-radius:var(--radius);padding:32px;margin-bottom:24px;border:1px solid rgba(255,255,255,.06)}
.content-block h2{font-size:1.3rem;margin-bottom:16px;color:#fff;padding-bottom:10px;border-bottom:2px solid rgba(255,107,53,.3)}
.content-block h3{font-size:1.1rem;margin:20px 0 10px;color:var(--accent)}
.content-block p,.content-block li{color:var(--text-muted);margin-bottom:12px}
.content-block ul,.content-block ol{padding-left:24px;margin-bottom:16px}
.content-block li{margin-bottom:6px}

/* Two column layout */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.two-col img{border-radius:var(--radius);border:1px solid rgba(255,255,255,.08)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;margin:24px 0}
.step-item{text-align:center;padding:24px 16px;background:var(--bg-card);border-radius:var(--radius);border:1px solid rgba(255,255,255,.06)}
.step-num{width:40px;height:40px;line-height:40px;border-radius:50%;background:var(--gradient);color:#fff;font-weight:700;margin:0 auto 12px;font-size:1.1rem}
.step-item h4{color:#fff;margin-bottom:8px;font-size:.95rem}
.step-item p{font-size:.85rem;color:var(--text-muted)}

/* FAQ */
.faq-item{border-bottom:1px solid rgba(255,255,255,.06);padding:18px 0}
.faq-item h4{color:#fff;margin-bottom:8px;font-size:1rem}
.faq-item p{color:var(--text-muted);font-size:.9rem}

/* TOC */
.toc{background:var(--bg-card);border-radius:var(--radius);padding:24px;margin-bottom:32px;border-left:3px solid var(--accent)}
.toc h3{font-size:1rem;margin-bottom:12px;color:#fff}
.toc ol{padding-left:20px}
.toc li{margin-bottom:6px;font-size:.9rem}
.toc a{color:var(--text-muted)}
.toc a:hover{color:var(--accent)}

/* Page header (sub pages) */
.page-header{padding:48px 0 32px;text-align:center;background:radial-gradient(ellipse at 50% 0%,rgba(108,92,231,.1),transparent 70%)}
.page-header h1{font-size:2rem;color:#fff;margin-bottom:10px}
.page-header p{color:var(--text-muted);font-size:.95rem}
.breadcrumb{font-size:.85rem;color:var(--text-muted);margin-bottom:16px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent)}

/* Legal pages */
.legal-content{max-width:860px;margin:0 auto;padding:0 20px 60px}
.legal-content h2{font-size:1.2rem;margin:28px 0 12px;color:#fff}
.legal-content p,.legal-content li{color:var(--text-muted);font-size:.92rem;line-height:1.8}
.legal-content ul,.legal-content ol{padding-left:24px;margin-bottom:16px}
.legal-content .update-date{color:var(--text-muted);font-size:.85rem;margin-bottom:24px}

/* Error pages */
.error-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;text-align:center;padding:40px 20px}
.error-page h1{font-size:6rem;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page h2{font-size:1.5rem;color:#fff;margin:16px 0}
.error-page p{color:var(--text-muted);margin-bottom:28px;max-width:480px}

/* Footer */
.site-footer{background:var(--bg-card);border-top:1px solid rgba(255,255,255,.06);padding:48px 0 24px;margin-top:48px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand .logo{margin-bottom:12px}
.footer-brand p{font-size:.85rem;color:var(--text-muted);line-height:1.7}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.footer-col a{display:block;color:var(--text-muted);font-size:.85rem;padding:4px 0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);font-size:.8rem;color:var(--text-muted)}

/* Internal links highlight */
.internal-links{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.internal-links a{padding:6px 14px;background:var(--bg-hover);border-radius:6px;font-size:.85rem;color:var(--text-muted)}
.internal-links a:hover{background:rgba(255,107,53,.15);color:var(--accent)}

/* Responsive */
@media(max-width:900px){
  .two-col{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .feature-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
}
@media(max-width:640px){
  .nav-main{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:var(--bg-card);flex-direction:column;padding:12px;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-main.open{display:flex}
  .menu-toggle{display:block}
  .header-inner{position:relative}
  .hero{padding:40px 0 28px}
  .footer-grid{grid-template-columns:1fr}
  .feature-card img{aspect-ratio:16/10;object-position:center top}
  section{padding:32px 0}
  .content-block{padding:20px}
}