/* 糖心vlog · 样式（主色 #6366f1 · 深色背景） */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#6366f1;
  --primary-light:#818cf8;
  --accent:#a855f7;
  --bg:#0d0e17;
  --card:#161a2e;
  --card-2:#1c2140;
  --border:rgba(255,255,255,.08);
  --text:#eef0ff;
  --muted:#9aa3c7;
  --star:#fbbf24;
  --radius:18px;
}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{font-family:inherit}

/* ===== 导航 ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(13,14,23,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:#fff;flex-shrink:0}
.logo-emoji{font-size:24px}
.nav-links{display:flex;gap:18px;font-size:14px}
.nav-links a{color:var(--muted);transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:var(--primary-light)}
.nav-btns{display:flex;gap:10px;flex-shrink:0}
.btn{display:inline-block;padding:8px 20px;border-radius:999px;font-size:14px;font-weight:600;transition:all .2s}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 6px 18px rgba(99,102,241,.4)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary-light);color:#fff}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#6366f1 0%,#7c5cf0 45%,#a855f7 100%);text-align:center;padding:90px 20px 70px}
.hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto}
.hero h1{font-size:clamp(28px,4.5vw,46px);font-weight:900;color:#fff;text-shadow:0 4px 24px rgba(0,0,0,.25)}
.hero-sub{margin:16px auto 0;max-width:640px;color:rgba(255,255,255,.85);font-size:16px}
.search-box{display:flex;max-width:560px;margin:32px auto 0;background:#fff;border-radius:999px;padding:6px;box-shadow:0 12px 32px rgba(0,0,0,.25)}
.search-box input{flex:1;border:none;outline:none;padding:10px 20px;font-size:15px;background:transparent;color:#222}
.search-box button{border:none;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;width:46px;height:46px;border-radius:50%;font-size:18px;cursor:pointer;flex-shrink:0}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:36px;flex-wrap:wrap}
.hstat .counter{display:block;font-size:30px;font-weight:800;color:#fff}
.hstat-label{font-size:13px;color:rgba(255,255,255,.75)}
.particles{position:absolute;inset:0;z-index:1;pointer-events:none}
.particle{position:absolute;border-radius:50%;background:rgba(255,255,255,.35);animation:floatUp linear infinite}
@keyframes floatUp{
  0%{transform:translateY(30px) scale(.6);opacity:0}
  20%{opacity:.8}
  100%{transform:translateY(-160px) scale(1.1);opacity:0}
}

/* ===== 通用区块 ===== */
.section{padding:70px 20px}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:30px;font-weight:800}
.section-head h2 span{background:linear-gradient(90deg,var(--primary-light),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.section-head p{color:var(--muted);margin-top:8px}

/* ===== 视频卡片 ===== */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:1200px;margin:0 auto}
.video-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s;display:block}
.video-card:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(99,102,241,.25)}
.cover{position:relative}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;backdrop-filter:blur(4px);transition:all .25s;padding-left:3px}
.video-card:hover .play{background:var(--primary);transform:translate(-50%,-50%) scale(1.1)}
.dur{position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.72);color:#fff;font-size:12px;padding:2px 8px;border-radius:6px}
.card-body{padding:14px 16px 16px}
.v-title{font-size:15px;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:44px}
.v-desc{color:var(--muted);font-size:13px;margin-top:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.creator-row{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12px;color:var(--muted)}
.creator-row .ava{width:24px;height:24px;border-radius:50%;object-fit:cover}
.creator-row .nick{color:var(--text);font-weight:600}
.creator-row .meta{margin-left:auto}

/* ===== 明星创作者 ===== */
.creator-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;max-width:1200px;margin:0 auto}
.creator-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px 16px;text-align:center;transition:transform .25s}
.creator-card:hover{transform:translateY(-4px)}
.cc-top{position:relative;display:inline-block}
.cc-ava{width:76px;height:76px;border-radius:50%;object-fit:cover;border:3px solid var(--primary)}
.star-badge{position:absolute;right:-6px;bottom:2px;font-size:18px}
.creator-card h4{margin-top:12px;font-size:16px}
.creator-card p{color:var(--muted);font-size:12px;margin-top:6px;min-height:36px}
.fans{display:inline-block;margin-top:10px;font-size:13px;font-weight:700;color:var(--primary-light)}

/* ===== 平台特色 ===== */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;max-width:1200px;margin:0 auto}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 20px;transition:all .25s}
.feature-card:hover{border-color:var(--primary);transform:translateY(-4px)}
.feature-icon{font-size:30px}
.feature-card h4{margin-top:12px;font-size:16px}
.feature-card p{color:var(--muted);font-size:13px;margin-top:6px}

/* ===== 数据统计 ===== */
.stats-bar{max-width:1200px;margin:0 auto;background:linear-gradient(135deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:40px 20px;display:flex;justify-content:space-around;flex-wrap:wrap;gap:24px;text-align:center}
.stat-item .num{font-size:42px;font-weight:900;background:linear-gradient(90deg,var(--primary-light),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-item .label{color:var(--muted);font-size:14px;margin-top:4px}

/* ===== 用户评价 ===== */
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:1200px;margin:0 auto}
.t-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.t-head{display:flex;align-items:center;gap:12px}
.t-ava{width:44px;height:44px;border-radius:50%;object-fit:cover}
.t-head h4{font-size:15px}
.t-stars{color:var(--star);font-size:13px;letter-spacing:2px}
.t-card p{color:var(--muted);font-size:14px;margin-top:14px;line-height:1.7}

/* ===== 成功故事 ===== */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:1200px;margin:0 auto}
.story-card{background:linear-gradient(135deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;transition:transform .25s}
.story-card:hover{transform:translateY(-4px)}
.story-card h4{font-size:17px;color:#fff}
.story-card p{color:var(--muted);font-size:14px;margin-top:10px;line-height:1.7}

/* ===== APP 展示 ===== */
.app{display:flex;align-items:center;gap:60px;max-width:1100px;margin:0 auto}
.app-copy{flex:1}
.app-copy h2{font-size:30px;font-weight:800}
.app-copy>p{color:var(--muted);margin-top:12px}
.app-feats{margin-top:26px;display:flex;flex-direction:column;gap:18px}
.app-feat{display:flex;gap:14px;align-items:flex-start}
.app-feat-icon{font-size:24px;background:rgba(99,102,241,.15);border-radius:12px;padding:10px}
.app-feat h4{font-size:16px}
.app-feat p{color:var(--muted);font-size:13px}
.phone{flex-shrink:0;width:280px;background:#000;border:8px solid #262b4d;border-radius:44px;padding:10px;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.phone-notch{width:120px;height:20px;background:#262b4d;border-radius:0 0 16px 16px;margin:0 auto 10px}
.phone-screen{border-radius:28px;overflow:hidden;background:var(--bg)}
.phone-screen img{width:100%;height:540px;object-fit:cover}

/* ===== 页脚 ===== */
.footer{background:#0b0c16;border-top:1px solid var(--border);padding:50px 20px 0;margin-top:30px}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;gap:60px;flex-wrap:wrap}
.footer-brand{max-width:340px}
.footer-brand .logo{margin-bottom:12px}
.footer-brand p{color:var(--muted);font-size:14px}
.footer-links{display:flex;gap:64px;flex-wrap:wrap}
.fl-col h4{font-size:15px;margin-bottom:14px}
.fl-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:color .2s}
.fl-col a:hover{color:var(--primary-light)}
.copyright{border-top:1px solid var(--border);margin-top:40px;padding:18px 20px;text-align:center;color:var(--muted);font-size:13px}

/* ===== 内页 ===== */
.page-hero{background:linear-gradient(135deg,#6366f1 0%,#7c5cf0 50%,#a855f7 100%);padding:64px 20px;text-align:center}
.page-hero h1{font-size:34px;font-weight:900;color:#fff}
.page-hero p{color:rgba(255,255,255,.85);margin-top:10px;max-width:640px;margin-left:auto;margin-right:auto}
.filter-bar{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.filter-btn{padding:8px 18px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:14px;cursor:pointer;transition:all .2s}
.filter-btn:hover{border-color:var(--primary-light);color:#fff}
.filter-btn.active{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-color:transparent}
.about-section{max-width:860px;margin:0 auto;padding:60px 20px}
.about-section h2{font-size:26px;font-weight:800;margin-bottom:18px}
.about-section h2:not(:first-child){margin-top:36px}
.about-section p{color:var(--muted);line-height:1.9;margin-bottom:14px}
.about-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.about-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;text-align:center}
.about-card .feature-icon{font-size:32px}
.about-card h4{margin-top:12px}
.about-card p{color:var(--muted);font-size:13px;margin-top:8px;line-height:1.7}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .creator-grid{grid-template-columns:repeat(3,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .nav-links{display:none}
  .app{flex-direction:column;gap:40px}
  .testimonial-grid{grid-template-columns:1fr}
  .story-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .hero-stats{gap:24px}
  .creator-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .stats-bar .num{font-size:30px}
  .about-cards{grid-template-columns:1fr}
}