/* ============================================
   糖心vlog · 样式表（主色 #a0522d / 深色背景）
   ============================================ */
:root{
  --bg:#16100b;
  --bg2:#1b130d;
  --card:#241a12;
  --card2:#2b1f15;
  --border:#3a2a1c;
  --text:#f3e9dd;
  --muted:#b3a390;
  --accent:#a0522d;
  --accent-light:#c06a3d;
  --gold:#f5b942;
  --radius:18px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  line-height:1.65;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit}
::selection{background:var(--accent);color:#fff}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(22,16,11,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0}
.logo{display:flex;align-items:center;gap:8px;font-size:21px;font-weight:800;letter-spacing:1px;white-space:nowrap}
.logo .icon{font-size:26px}
.nav-links{display:flex;gap:2px;flex-wrap:wrap}
.nav-links a{padding:8px 11px;border-radius:10px;color:var(--muted);font-size:14px;transition:.2s;white-space:nowrap}
.nav-links a:hover{color:var(--text);background:rgba(160,82,45,.12)}
.nav-links a.active{color:var(--text);background:rgba(160,82,45,.18);font-weight:600}
.nav-btns{display:flex;gap:10px;flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-block;padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap;
}
.btn-ghost{border-color:var(--border);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-light)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(160,82,45,.35)}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#2a1608 0%,#7c3f1e 46%,#a0522d 72%,#4a2410 100%);
}
.hero::before{
  content:"";position:absolute;width:540px;height:540px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,190,130,.22),transparent 70%);
  top:-170px;left:-130px;
}
.hero::after{
  content:"";position:absolute;width:430px;height:430px;border-radius:50%;
  background:radial-gradient(circle,rgba(110,55,25,.4),transparent 70%);
  bottom:-150px;right:-110px;
}
.hero-inner{position:relative;z-index:2;text-align:center;padding:92px 20px 76px}
.hero-tag{
  display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  color:#ffe9d2;padding:5px 16px;border-radius:999px;font-size:13px;margin-bottom:22px;
}
.hero h1{font-size:48px;line-height:1.25;letter-spacing:2px;text-shadow:0 4px 18px rgba(0,0,0,.3)}
.hero .sub{max-width:640px;margin:18px auto 0;color:rgba(255,240,225,.82);font-size:16px}
.search{
  display:flex;max-width:560px;margin:34px auto 0;padding:6px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);
  border-radius:999px;backdrop-filter:blur(8px);
}
.search input{
  flex:1;min-width:0;background:transparent;border:none;outline:none;
  color:#fff;padding:10px 18px;font-size:15px;
}
.search input::placeholder{color:rgba(255,255,255,.6)}
.search button{
  border:none;background:#fff;color:var(--accent);border-radius:999px;
  padding:10px 22px;font-size:15px;cursor:pointer;font-weight:700;transition:.2s;
}
.search button:hover{transform:scale(1.04)}
.hero-stats{display:flex;justify-content:center;gap:52px;margin-top:42px;flex-wrap:wrap}
.hero-stat b{font-size:30px;display:block}
.hero-stat span{display:block;color:rgba(255,255,255,.72);font-size:13px;margin-top:2px}
.particle{
  position:absolute;bottom:-20px;border-radius:50%;
  background:rgba(255,222,182,.55);box-shadow:0 0 8px rgba(255,200,140,.4);
  animation:floatUp linear infinite;pointer-events:none;
}
@keyframes floatUp{
  0%{transform:translateY(0) translateX(0);opacity:0}
  10%{opacity:1}
  90%{opacity:.55}
  100%{transform:translateY(-560px) translateX(34px);opacity:0}
}

/* ---------- 通用区块 ---------- */
.section{padding:76px 0}
.section.alt{background:var(--bg2)}
.section-head{text-align:center;margin-bottom:42px}
.section-head h2{font-size:32px;letter-spacing:1px}
.section-head p{color:var(--muted);margin-top:10px;font-size:15px}
.tag{
  display:inline-block;background:rgba(160,82,45,.18);color:var(--accent-light);
  padding:4px 14px;border-radius:999px;font-size:13px;margin-bottom:12px;
}

/* ---------- 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;display:flex;flex-direction:column;cursor:pointer;
}
.video-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:var(--shadow)}
.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(0,0,0,.55);
  backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;opacity:0;transition:.25s;
}
.video-card:hover .play-btn{opacity: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;
}
.video-info{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.video-info h3{
  font-size:15px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.video-info p{
  color:var(--muted);font-size:13px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.video-meta{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:12px;color:var(--muted)}
.video-meta img{width:24px;height:24px;border-radius:50%;border:1px solid var(--border)}
.video-meta .name{color:var(--text)}
.video-meta .stats{margin-left:auto;display:flex;gap:10px}

/* ---------- 创作者卡片 ---------- */
.creator-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.creator-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 22px;text-align:center;transition:.25s;
}
.creator-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:var(--shadow)}
.creator-avatar{position:relative;width:84px;height:84px;margin:0 auto 14px}
.creator-avatar img{width:100%;height:100%;border-radius:50%;border:3px solid var(--accent);object-fit:cover}
.badge{
  position:absolute;right:-4px;bottom:-4px;width:26px;height:26px;border-radius:50%;
  background:var(--gold);color:#4a3000;display:flex;align-items:center;justify-content:center;
  font-size:13px;border:2px solid var(--bg);
}
.creator-card h3{font-size:17px}
.creator-card p{color:var(--muted);font-size:13px;margin-top:6px}
.creator-card .fans{
  display:inline-block;margin-top:14px;background:rgba(160,82,45,.15);color:var(--accent-light);
  padding:4px 16px;border-radius:999px;font-size:13px;
}

/* ---------- 平台特色 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:.25s;
}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.feature-icon{
  width:48px;height:48px;border-radius:14px;margin-bottom:14px;
  background:linear-gradient(135deg,var(--accent),#6b3a1f);
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.feature-card h3{font-size:16px;margin-bottom:6px}
.feature-card p{color:var(--muted);font-size:13px}

/* ---------- 数据统计区 ---------- */
.stats-band{
  background:linear-gradient(135deg,#3a1f10,#7c3f1e);
  border:1px solid rgba(255,255,255,.08);
  border-radius:24px;padding:48px 24px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;
}
.stat-icon{font-size:26px;margin-bottom:10px}
.stat-item b{font-size:36px;display:block;letter-spacing:1px}
.stat-item span{color:rgba(255,235,215,.72);font-size:14px}

/* ---------- 用户评价 ---------- */
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testimonial-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;display:flex;flex-direction:column;gap:12px;transition:.25s;
}
.testimonial-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.stars{color:var(--gold);font-size:14px;letter-spacing:2px}
.testimonial-card .quote{font-size:14px;color:var(--text)}
.testimonial-user{display:flex;align-items:center;gap:10px;margin-top:auto}
.testimonial-user img{width:40px;height:40px;border-radius:50%;border:1px solid var(--border)}
.testimonial-user b{display:block;font-size:14px}
.testimonial-user span{color:var(--muted);font-size:12px}

/* ---------- 成功故事 ---------- */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.story-card{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--card),var(--card2));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;transition:.25s;
}
.story-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:var(--shadow)}
.story-num{
  position:absolute;right:16px;top:6px;font-size:56px;font-weight:900;
  color:rgba(160,82,45,.16);line-height:1;
}
.story-card h3{font-size:18px;margin-bottom:10px;position:relative;z-index:1}
.story-card p{color:var(--muted);font-size:14px;position:relative;z-index:1}

/* ---------- APP 展示区 ---------- */
.app-section{display:grid;grid-template-columns:1fr auto;gap:64px;align-items:center}
.app-text .tag{margin-bottom:14px}
.app-text h2{font-size:32px;letter-spacing:1px}
.app-text>p{color:var(--muted);margin-top:12px;max-width:520px}
.app-points{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.app-point{display:flex;gap:12px;align-items:flex-start}
.app-icon{
  width:44px;height:44px;flex:none;border-radius:12px;font-size:21px;
  background:rgba(160,82,45,.15);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
}
.app-point h4{font-size:15px}
.app-point p{color:var(--muted);font-size:13px;margin-top:2px}
.phone{
  width:270px;height:560px;background:#0d0a06;border:10px solid #2e2218;
  border-radius:46px;position:relative;overflow:hidden;flex:none;
  box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.phone .notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:96px;height:22px;background:#2e2218;border-radius:12px;z-index:3;
}
.phone .screen{width:100%;height:100%;object-fit:cover;border-radius:34px}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--border);background:var(--bg2);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-intro{color:var(--muted);font-size:13px;margin-top:14px;max-width:300px}
.footer-links h4{font-size:15px;margin-bottom:14px}
.footer-links a{display:block;color:var(--muted);font-size:13px;padding:4px 0;transition:.2s}
.footer-links a:hover{color:var(--accent-light)}
.copyright{
  border-top:1px solid var(--border);margin-top:36px;padding-top:20px;
  text-align:center;color:var(--muted);font-size:13px;
}

/* ---------- 内页 ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:70px 20px;text-align:center;
  background:linear-gradient(135deg,#2a1608,#7c3f1e);
}
.page-hero h1{font-size:36px;letter-spacing:2px}
.page-hero p{color:rgba(255,240,225,.78);margin-top:12px;font-size:15px}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:38px}
.filter-btn{
  background:var(--card);border:1px solid var(--border);color:var(--muted);
  padding:8px 18px;border-radius:999px;cursor:pointer;font-size:14px;transition:.2s;
}
.filter-btn:hover{color:var(--text);border-color:var(--accent)}
.filter-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---------- 关于我们 ---------- */
.about-content{max-width:840px;margin:0 auto}
.about-content h2{font-size:28px;margin-bottom:18px;text-align:center;letter-spacing:1px}
.about-content p{color:var(--muted);font-size:15px;margin-bottom:16px}
.about-img{
  width:100%;max-height:420px;object-fit:cover;border-radius:var(--radius);
  margin:26px 0;border:1px solid var(--border);
}
.cta-band{
  text-align:center;border-radius:24px;padding:56px 24px;
  background:linear-gradient(135deg,#3a1f10,#7c3f1e);
  border:1px solid rgba(255,255,255,.08);
}
.cta-band h2{font-size:30px;margin-bottom:12px;letter-spacing:1px}
.cta-band p{color:rgba(255,235,215,.75);margin-bottom:24px}

/* ---------- 响应式 ---------- */
@media(max-width:900px){
  .nav-inner{flex-wrap:wrap}
  .nav-links{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap}
  .hero h1{font-size:34px}
  .hero-inner{padding:64px 16px 52px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .creator-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .feature-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:26px}
  .testimonial-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .story-grid{grid-template-columns:1fr;gap:16px}
  .app-section{grid-template-columns:1fr;gap:44px}
  .phone{margin:0 auto}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .app-text h2{font-size:26px}
}
@media(max-width:560px){
  .video-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .video-info{padding:11px 12px 13px}
  .video-info h3{font-size:14px}
  .creator-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .testimonial-grid{grid-template-columns:1fr}
  .app-points{grid-template-columns:1fr}
  .hero-stats{gap:28px}
  .hero-stat b{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:22px}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat-item b{font-size:26px}
  .page-hero h1{font-size:28px}
  .nav-btns .btn{padding:8px 14px}
}