/* =========================================================
   糖心vlog - 糖心2 批次 07 套样式
   主色 #3b82f6 | 浅色背景 | 摄影主题
   ========================================================= */
:root{
  --primary:#3b82f6;
  --primary-dark:#2563eb;
  --primary-light:#60a5fa;
  --primary-soft:#eff6ff;
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#1f2937;
  --text-2:#475569;
  --muted:#64748b;
  --border:#e2e8f0;
  --dark:#0f172a;
  --radius:16px;
  --shadow:0 4px 16px rgba(15,23,42,.06);
  --shadow-lg:0 14px 34px rgba(15,23,42,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
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:1.6;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;
  cursor:pointer;border:none;transition:all .2s;background:none;color:inherit;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;gap:18px;height:66px}
.logo{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:800;color:var(--text);flex:none}
.logo-emoji{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;font-size:20px;
  box-shadow:0 4px 10px rgba(59,130,246,.35);
}
.nav-links{display:flex;gap:2px;margin:0 auto;overflow-x:auto}
.nav-links a{
  padding:8px 13px;border-radius:8px;font-size:14px;color:#475569;
  white-space:nowrap;transition:all .2s;
}
.nav-links a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-links a.active{color:var(--primary);background:var(--primary-soft);font-weight:600}
.nav-btns{display:flex;gap:10px;flex:none}
.nav-btns .btn{padding:7px 18px;font-size:13.5px}

/* ---------- Hero 区 ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#2563eb 0%,#3b82f6 45%,#60a5fa 100%);
  padding:88px 0 76px;text-align:center;color:#fff;
}
.hero-particles{position:absolute;inset:0;pointer-events:none}
.particle{position:absolute;border-radius:50%;pointer-events:none;animation:particleFloat 8s ease-in-out infinite}
@keyframes particleFloat{
  0%,100%{transform:translateY(0) translateX(0);opacity:.8}
  33%{transform:translateY(-26px) translateX(8px);opacity:.4}
  66%{transform:translateY(-12px) translateX(-8px);opacity:.65}
}
.hero-inner{position:relative;z-index:1}
.hero h1{font-size:44px;font-weight:800;letter-spacing:1px;margin-bottom:14px}
.hero-sub{font-size:17px;color:rgba(255,255,255,.92);max-width:660px;margin:0 auto 34px}
.search-box{
  display:flex;align-items:center;max-width:560px;margin:0 auto;
  background:#fff;border-radius:999px;padding:6px 6px 6px 22px;
  box-shadow:0 14px 34px rgba(30,64,175,.28);
}
.search-box input{
  flex:1;border:none;outline:none;font-size:15px;color:var(--text);
  background:transparent;min-width:0;
}
.search-btn{
  width:44px;height:44px;border:none;border-radius:50%;
  background:var(--primary);color:#fff;font-size:17px;cursor:pointer;flex:none;
  transition:background .2s;
}
.search-btn:hover{background:var(--primary-dark)}
.hero-stats{display:flex;justify-content:center;gap:64px;margin-top:46px;flex-wrap:wrap}
.hero-stat .num{font-size:32px;font-weight:800;letter-spacing:.5px}
.hero-stat .label{font-size:14px;color:rgba(255,255,255,.85);margin-top:4px}

/* ---------- 通用区块 ---------- */
.section{padding:68px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 38px}
.sec-title{font-size:28px;font-weight:800;color:#0f172a;position:relative;display:inline-block}
.sec-title::after{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--primary);margin:10px auto 0}
.sec-sub{color:var(--muted);margin-top:12px;font-size:15px}
.sec-more{text-align:center;margin-top:34px}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 视频卡片 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{
  background:var(--card);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:#dbeafe}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.video-card:hover .cover img{transform:scale(1.07)}
.play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.8);
  width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.94);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:18px;padding-left:3px;opacity:0;
  transition:opacity .25s ease,transform .25s ease;
  box-shadow:0 8px 20px rgba(15,23,42,.25);
}
.video-card:hover .play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.duration{
  position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.72);
  color:#fff;font-size:12px;padding:2px 8px;border-radius:6px;letter-spacing:.5px;
}
.vc-body{padding:14px 16px 16px}
.vc-title{font-size:15px;font-weight:700;color:var(--text);line-height:1.5}
.vc-desc{font-size:13px;color:var(--muted);margin:6px 0 12px;line-height:1.55}
.vc-creator{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.vc-avatar{width:24px;height:24px;border-radius:50%;flex:none;background:#dbeafe}
.vc-name{color:#334155;font-weight:600;white-space:nowrap}
.vc-meta{margin-left:auto;white-space:nowrap}

/* ---------- 明星创作者 ---------- */
.creator-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.creator-card{
  background:var(--card);border-radius:20px;padding:30px 22px;text-align:center;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
.creator-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.creator-avatar-wrap{position:relative;width:84px;margin:0 auto 14px}
.creator-avatar{width:84px;height:84px;border-radius:50%;border:4px solid #dbeafe;background:#dbeafe}
.star-badge{
  position:absolute;right:-2px;bottom:0;width:30px;height:30px;border-radius:50%;
  background:#fbbf24;border:3px solid #fff;display:flex;align-items:center;justify-content:center;
  font-size:13px;
}
.creator-name{font-size:17px;font-weight:800;color:var(--text)}
.creator-role{font-size:13px;color:var(--muted);margin-top:2px}
.creator-fans{font-size:14px;font-weight:700;color:var(--primary);margin-top:6px}
.creator-bio{font-size:13px;color:var(--muted);margin:10px 0 14px;line-height:1.6;min-height:42px}
.btn-follow{padding:7px 22px;font-size:13px}
.btn-follow.followed{background:#e2e8f0;color:#334155}

/* ---------- 平台特色 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{
  background:var(--card);border-radius:var(--radius);padding:26px 22px;
  box-shadow:var(--shadow);transition:transform .25s ease;
}
.feature-card:hover{transform:translateY(-5px)}
.feature-icon{
  width:54px;height:54px;border-radius:14px;
  background:linear-gradient(135deg,var(--primary-soft),#dbeafe);
  display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;
}
.feature-card h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:6px}
.feature-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- 数据统计区 ---------- */
.stats-bar{
  background:linear-gradient(135deg,#1e3a8a 0%,#3b82f6 100%);
  border-radius:24px;padding:46px 24px;display:grid;
  grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;color:#fff;
  box-shadow:var(--shadow-lg);
}
.stat-item .stat-num{font-size:36px;font-weight:800;letter-spacing:.5px}
.stat-item .stat-label{font-size:14px;color:rgba(255,255,255,.85);margin-top:6px}

/* ---------- 用户评价 ---------- */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testi-card{background:var(--card);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.testi-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.testi-avatar{width:46px;height:46px;border-radius:50%;background:#dbeafe}
.testi-name{font-size:14px;font-weight:700;color:var(--text)}
.testi-stars{color:#f59e0b;font-size:13px;letter-spacing:2px}
.testi-text{font-size:14px;color:#475569;line-height:1.75}

/* ---------- 成功故事 ---------- */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.story-card{
  background:linear-gradient(160deg,#ffffff 0%,#eff6ff 100%);
  border:1px solid #dbeafe;border-radius:20px;padding:26px 24px;
  box-shadow:var(--shadow);transition:transform .25s ease;
}
.story-card:hover{transform:translateY(-6px)}
.story-tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--primary);
  background:var(--primary-soft);padding:3px 12px;border-radius:999px;margin-bottom:14px;
}
.story-title{font-size:17px;font-weight:800;color:var(--text);line-height:1.5;margin-bottom:8px}
.story-text{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- APP 展示区 ---------- */
.app-wrap{
  display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
  background:linear-gradient(135deg,#eff6ff 0%,#ffffff 70%);
  border:1px solid #dbeafe;border-radius:28px;padding:52px 48px;
}
.app-left .sec-title::after{margin-left:0}
.app-points{margin-top:26px;display:grid;gap:18px}
.app-point{display:flex;gap:14px;align-items:flex-start}
.app-icon{
  width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid #dbeafe;
  display:flex;align-items:center;justify-content:center;font-size:22px;flex:none;
  box-shadow:var(--shadow);
}
.app-point h4{font-size:15px;font-weight:700;color:var(--text)}
.app-point p{font-size:13px;color:var(--muted);margin-top:3px;line-height:1.6}
.app-download{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.app-btn{
  display:inline-flex;align-items:center;gap:8px;background:var(--dark);color:#fff;
  padding:10px 20px;border-radius:12px;font-size:13px;font-weight:600;transition:opacity .2s;
}
.app-btn:hover{opacity:.85}
.app-btn small{display:block;font-size:10px;font-weight:400;color:#94a3b8}
.phone-wrap{display:flex;justify-content:center}
.phone{width:272px;background:var(--dark);border-radius:38px;padding:10px;box-shadow:0 30px 60px rgba(15,23,42,.22)}
.phone-screen{position:relative;background:#fff;border-radius:29px;overflow:hidden;aspect-ratio:9/19}
.phone-notch{
  position:absolute;top:8px;left:50%;transform:translateX(-50%);
  width:92px;height:22px;background:var(--dark);border-radius:12px;z-index:2;
}
.phone-screen img{width:100%;height:100%;object-fit:cover}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#94a3b8;padding:56px 0 30px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer .logo{color:#fff;font-size:18px;margin-bottom:14px}
.footer-brand p{font-size:13px;line-height:1.8;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col a{display:block;font-size:13px;margin-bottom:10px;color:#94a3b8;transition:color .2s}
.footer-col a:hover{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.08);margin-top:38px;padding-top:20px;text-align:center;font-size:13px;color:#64748b}

/* ---------- 内页顶部 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#dbeafe 0%,#eff6ff 55%,#ffffff 100%);
  padding:64px 0 56px;text-align:center;color:var(--text);
}
.page-hero-inner{position:relative;z-index:1}
.page-hero h1{font-size:34px;font-weight:800}
.page-hero .sub{color:var(--muted);margin-top:10px;font-size:15px}

/* ---------- 精选页筛选 ---------- */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center;margin-bottom:10px}
.toolbar .search-box{position:static;margin:0;width:300px;box-shadow:var(--shadow);padding:5px 5px 5px 18px}
.toolbar .search-box input{font-size:14px}
.toolbar .search-btn{width:38px;height:38px;font-size:15px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:18px 0 8px}
.chip{
  padding:8px 18px;border-radius:999px;background:#fff;border:1.5px solid var(--border);
  color:#475569;font-size:14px;cursor:pointer;transition:all .2s;
}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff}
.filter-count{text-align:center;color:var(--muted);font-size:13px;margin-bottom:22px}
.empty{text-align:center;color:var(--muted);padding:60px 0;display:none}
.empty .empty-icon{font-size:40px;margin-bottom:10px}

/* ---------- 关于我们 ---------- */
.about-story{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-story img{border-radius:20px;box-shadow:var(--shadow-lg);width:100%}
.about-story h2{font-size:24px;font-weight:800;color:var(--text);margin-bottom:14px}
.about-story p{font-size:14.5px;color:#475569;line-height:1.9;margin-bottom:12px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.value-card{background:var(--card);border-radius:var(--radius);padding:28px 24px;text-align:center;box-shadow:var(--shadow)}
.value-icon{font-size:32px;margin-bottom:12px}
.value-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.value-card p{font-size:13px;color:var(--muted);line-height:1.7}
.timeline{max-width:680px;margin:0 auto;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:#bfdbfe}
.tl-item{position:relative;padding:0 0 30px 36px}
.tl-dot{position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px #dbeafe}
.tl-year{font-size:14px;font-weight:800;color:var(--primary)}
.tl-title{font-size:16px;font-weight:700;color:var(--text);margin:4px 0}
.tl-text{font-size:13.5px;color:var(--muted);line-height:1.7}
.cta-box{
  background:linear-gradient(135deg,#2563eb,#3b82f6);border-radius:24px;
  padding:52px 32px;text-align:center;color:#fff;box-shadow:var(--shadow-lg);
}
.cta-box h2{font-size:26px;font-weight:800;margin-bottom:10px}
.cta-box p{color:rgba(255,255,255,.88);font-size:15px;margin-bottom:24px}
.cta-box .btn{background:#fff;color:var(--primary)}
.cta-box .btn:hover{background:#eff6ff}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .nav-inner{flex-wrap:wrap;height:auto;padding:10px 0}
  .nav-links{order:3;width:100%;justify-content:flex-start}
  .nav-btns{margin-left:auto}
  .hero{padding:64px 0 56px}
  .hero h1{font-size:34px}
  .hero-stats{gap:32px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .creator-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:1fr}
  .story-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .app-wrap{grid-template-columns:1fr;padding:36px 26px}
  .about-story{grid-template-columns:1fr}
  .value-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .vc-title{font-size:14px}
  .toolbar .search-box{width:100%}
}