/* 糖心vlog · 样式（主色 #8b5cf6 · 深色背景） */
:root{
  --bg:#0d0a1a;
  --bg-soft:#120d24;
  --card:#191230;
  --card-2:#221845;
  --border:#2c2050;
  --primary:#8b5cf6;
  --primary-soft:#a78bfa;
  --primary-deep:#6d28d9;
  --text:#f1edfc;
  --muted:#a89cc9;
  --radius:18px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,92%);margin:0 auto}

/* 顶部导航 */
.nav{position:sticky;top:0;z-index:60;background:rgba(13,10,26,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:800;letter-spacing:1px}
.logo-icon{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:flex;align-items:center;justify-content:center;font-size:22px;box-shadow:0 6px 16px rgba(139,92,246,.4)}
.nav-links{display:flex;gap:4px;margin:0 auto}
.nav-links a{padding:8px 14px;border-radius:10px;color:var(--muted);font-size:15px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(139,92,246,.16)}
.nav-btns{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:9px 20px;border-radius:12px;font-size:14px;font-weight:600;cursor:pointer;border:none;font-family:inherit;transition:.2s}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-soft)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;box-shadow:0 6px 18px rgba(139,92,246,.35)}
.btn-primary:hover{transform:translateY(-2px)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:86px 0 72px;text-align:center;background:radial-gradient(1100px 480px at 50% -12%,rgba(139,92,246,.42),transparent 62%),linear-gradient(180deg,#191038 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(28px,4.4vw,46px);font-weight:800;letter-spacing:1px;background:linear-gradient(90deg,#fff,#c4b5fd,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:16px auto 0;max-width:640px;color:var(--muted);font-size:16px}
.search-box{max-width:560px;margin:30px auto 0;display:flex;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:999px;padding:5px 5px 5px 22px;box-shadow:var(--shadow)}
.search-box input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:15px}
.search-box input::placeholder{color:#6f6494}
.search-box button{width:44px;height:44px;flex-shrink:0;border-radius:50%;border:none;background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;font-size:17px;cursor:pointer;transition:.2s}
.search-box button:hover{transform:scale(1.06)}
.hero-stats{display:flex;justify-content:center;gap:60px;margin-top:38px;flex-wrap:wrap}
.hero-stats .stat-num{font-size:28px;font-weight:800;color:var(--primary-soft)}
.hero-stats .label{font-size:13px;color:var(--muted);margin-top:4px}
.particles{position:absolute;inset:0;pointer-events:none}
.particle{position:absolute;bottom:-12px;border-radius:50%;background:var(--primary-soft);opacity:.55;animation:floatUp linear infinite}
@keyframes floatUp{0%{transform:translateY(0);opacity:0}12%{opacity:.65}100%{transform:translateY(-108vh);opacity:0}}

/* 区块标题 */
.section{padding:60px 0}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px;gap:16px}
.sec-head h2{font-size:26px;letter-spacing:.5px}
.sec-head h2::before{content:"";display:inline-block;width:6px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));margin-right:10px;vertical-align:-3px}
.sec-head .more{color:var(--primary-soft);font-size:14px;transition:.2s}
.sec-head .more:hover{color:#fff}

/* 视频卡片 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.video-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(139,92,246,.6)}
.video-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-cover img{width:100%;height:100%;object-fit:cover;transition:.4s}
.video-card:hover .video-cover img{transform:scale(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;background:rgba(139,92,246,.92);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 8px 22px rgba(0,0,0,.4);transition:.25s}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1.12)}
.duration{position:absolute;right:10px;bottom:10px;background:rgba(10,6,24,.82);color:#fff;padding:2px 8px;border-radius:6px;font-size:12px;font-weight:600}
.video-info{padding:14px 16px 16px}
.video-info h3{font-size:15px;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:45px}
.video-desc{font-size:13px;color:var(--muted);margin-bottom:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.video-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.video-meta img{width:26px;height:26px;border-radius:50%;border:1px solid rgba(139,92,246,.5)}
.video-meta .name{color:var(--text);font-weight:600}
.video-meta .stats{margin-left:auto;display:flex;gap:10px}

/* 明星创作者 */
.creator-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.creator-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 14px;text-align:center;transition:.25s}
.creator-card:hover{transform:translateY(-5px);border-color:rgba(139,92,246,.6);box-shadow:var(--shadow)}
.creator-avatar{position:relative;width:74px;height:74px;margin:0 auto 12px}
.creator-avatar img{width:100%;height:100%;border-radius:50%;border:2px solid var(--primary)}
.creator-badge{position:absolute;top:-3px;right:-7px;background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#4a3000;font-size:11px;font-weight:700;padding:1px 8px;border-radius:999px;border:2px solid var(--card)}
.creator-card h3{font-size:15px}
.creator-card .role{font-size:12px;color:var(--muted);margin:5px 0 10px}
.creator-card .fans{display:inline-block;font-size:12px;background:rgba(139,92,246,.16);color:var(--primary-soft);padding:4px 12px;border-radius:999px}

/* 平台特色 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{background:linear-gradient(160deg,var(--card) 0%,var(--card-2) 100%);border:1px solid var(--border);border-radius:var(--radius);padding:26px 20px;transition:.25s}
.feature-card:hover{transform:translateY(-5px);border-color:rgba(139,92,246,.6)}
.feature-icon{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px;box-shadow:0 6px 16px rgba(139,92,246,.35)}
.feature-card h3{font-size:16px;margin-bottom:6px}
.feature-card p{font-size:13px;color:var(--muted)}

/* 数据统计栏 */
.stats-band{background:linear-gradient(135deg,#2c1b63 0%,#1a1140 100%);border:1px solid var(--border);border-radius:24px;padding:44px 30px;display:flex;justify-content:space-around;align-items:center;text-align:center;flex-wrap:wrap;gap:28px;box-shadow:var(--shadow)}
.stat-num{font-size:42px;font-weight:800;color:#fff;letter-spacing:1px}
.stat-label{font-size:14px;color:var(--primary-soft);margin-top:8px}

/* 用户评价 */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.testi-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:.25s}
.testi-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.6)}
.testi-top{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.testi-top img{width:44px;height:44px;border-radius:50%;border:1px solid rgba(139,92,246,.5)}
.testi-top .name{font-weight:700;font-size:15px}
.stars{color:#fbbf24;font-size:13px;letter-spacing:2px;margin-top:2px}
.testi-card p{font-size:14px;color:#d9d2ef}

/* 成功故事 */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.story-card{background:linear-gradient(160deg,var(--card) 0%,var(--card-2) 100%);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.25s}
.story-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,.6);box-shadow:var(--shadow)}
.story-card .tag{display:inline-block;font-size:12px;color:var(--primary-soft);background:rgba(139,92,246,.16);padding:3px 12px;border-radius:999px}
.story-card h3{font-size:17px;margin:14px 0 8px}
.story-card p{font-size:14px;color:var(--muted)}

/* APP 展示区 */
.app-sec{display:flex;align-items:center;gap:56px}
.app-copy{flex:1}
.app-copy h2{font-size:30px;margin-bottom:12px}
.app-copy>p{color:var(--muted);font-size:15px;max-width:520px}
.app-points{margin-top:28px;display:flex;flex-direction:column;gap:20px}
.app-point{display:flex;gap:14px;align-items:flex-start}
.app-point .icon{width:46px;height:46px;flex-shrink:0;border-radius:12px;background:rgba(139,92,246,.18);border:1px solid rgba(139,92,246,.35);display:flex;align-items:center;justify-content:center;font-size:21px}
.app-point h4{font-size:15px}
.app-point p{font-size:13px;color:var(--muted)}
.phone-wrap{flex-shrink:0}
.phone{position:relative;width:280px;border-radius:42px;border:9px solid #241a45;background:#0a0716;box-shadow:0 26px 60px rgba(0,0,0,.55);overflow:hidden}
.phone .notch{position:absolute;top:0;left:50%;transform:translateX(-50%);width:130px;height:22px;background:#0a0716;border-radius:0 0 16px 16px;z-index:2}
.phone img{width:100%;height:570px;object-fit:cover}

/* 页脚 */
.footer{border-top:1px solid var(--border);background:var(--bg-soft);padding:52px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:32px}
.footer h4{font-size:15px;margin-bottom:14px}
.footer-links a{display:block;color:var(--muted);font-size:14px;margin-bottom:9px;transition:.2s}
.footer-links a:hover{color:var(--primary-soft)}
.footer .intro{font-size:14px;color:var(--muted);margin-top:12px;max-width:300px}
.copyright{text-align:center;color:var(--muted);font-size:13px;margin-top:36px;padding-top:22px;border-top:1px solid var(--border)}

/* 内页 hero */
.page-hero{position:relative;overflow:hidden;padding:66px 0;text-align:center;background:radial-gradient(900px 380px at 50% -18%,rgba(139,92,246,.35),transparent 62%)}
.page-hero h1{font-size:38px;font-weight:800}
.page-hero p{color:var(--muted);margin-top:10px;font-size:15px}

/* 精选页筛选 */
.filter-bar{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}
.filter-input{max-width:420px;width:100%;padding:12px 22px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);outline:none;font-size:14px}
.filter-input:focus{border-color:var(--primary)}
.filter-input::placeholder{color:#6f6494}
.filter-row{display:flex;gap:10px;flex-wrap:wrap}
.chip{padding:7px 18px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--muted);cursor:pointer;font-size:14px;transition:.2s;font-family:inherit}
.chip:hover,.chip.active{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;border-color:transparent}

/* 关于页 */
.about-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin-bottom:22px}
.about-card h3{font-size:20px;margin-bottom:14px;color:var(--primary-soft)}
.about-card p{color:#d9d2ef;font-size:15px;margin-bottom:10px}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:22px}
.about-grid .item{background:linear-gradient(160deg,var(--card),var(--card-2));border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.about-grid .item .icon{font-size:26px;margin-bottom:10px}
.about-grid .item h4{font-size:16px;margin-bottom:6px}
.about-grid .item p{font-size:13px;color:var(--muted)}

/* 响应式：电脑 4 列 / 手机 2 列 */
@media(max-width:900px){
  .nav-links{display:none}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .creator-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:1fr}
  .story-grid{grid-template-columns:1fr}
  .app-sec{flex-direction:column;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr}
  .hero-stats{gap:34px}
  .stats-band{gap:24px}
  .stat-num{font-size:32px}
}