/* ============================================
   糖心vlog - 音乐主题视频分享平台
   主色 #a0522d · 深色背景
   ============================================ */
:root{
  --primary:#a0522d;
  --primary-2:#d2691e;
  --primary-3:#e8965a;
  --primary-deep:#7a3e21;
  --bg:#17110d;
  --bg-2:#1d1510;
  --card:#241a13;
  --card-2:#2b2017;
  --line:rgba(160,82,45,.3);
  --text:#f4eadd;
  --muted:#b9a892;
  --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:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
::selection{background:var(--primary-2);color:#fff}

/* ============ 导航 ============ */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(23,17,13,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;white-space:nowrap}
.logo-emoji{
  width:42px;height:42px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  border-radius:12px;font-size:22px;
  box-shadow:0 6px 16px rgba(160,82,45,.4);
}
.logo .name{
  background:linear-gradient(90deg,var(--primary-3),#ffd9b0);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:flex;gap:4px;margin:0 auto}
.nav-links a{
  padding:8px 12px;border-radius:10px;color:var(--muted);
  font-size:15px;transition:.2s;white-space:nowrap;
}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(160,82,45,.18)}
.nav-auth{display:flex;gap:10px;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.2s;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;box-shadow:0 6px 18px rgba(160,82,45,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(160,82,45,.5)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{background:rgba(160,82,45,.15)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#4d2b16 0%,#a0522d 52%,#c96f33 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 20% 20%,rgba(255,255,255,.08),transparent 55%);
}
.hero-inner{position:relative;z-index:2;text-align:center;padding:96px 20px 84px}
.hero-tag{
  display:inline-block;padding:6px 16px;border-radius:999px;
  background:rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.25);
  font-size:13px;color:#ffe9d4;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,5vw,54px);font-weight:800;letter-spacing:1px;
  margin-bottom:16px;text-shadow:0 4px 18px rgba(0,0,0,.3);
}
.hero .sub{font-size:17px;color:#ffe4cc;max-width:660px;margin:0 auto 34px;opacity:.95}
.search-box{
  display:flex;max-width:560px;margin:0 auto 40px;
  background:rgba(20,12,7,.45);border:1px solid rgba(255,255,255,.35);
  border-radius:999px;padding:6px;backdrop-filter:blur(8px);
}
.search-box input{
  flex:1;border:none;outline:none;background:transparent;
  color:var(--text);font-size:15px;padding:10px 20px;
}
.search-box input::placeholder{color:rgba(255,228,204,.75)}
.search-box button{
  width:46px;height:46px;border:none;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary-2),var(--primary-3));
  color:#fff;font-size:18px;cursor:pointer;
}
.hero-stats{display:flex;justify-content:center;gap:clamp(28px,6vw,76px);flex-wrap:wrap}
.hero-stat .num{font-size:clamp(24px,3.4vw,38px);font-weight:800}
.hero-stat .lab{font-size:14px;color:#ffe4cc;opacity:.9;margin-top:2px}

/* 粒子 */
.particles{position:absolute;inset:0;z-index:1;pointer-events:none}
.particle{
  position:absolute;bottom:-20px;border-radius:50%;
  background:rgba(255,224,190,.5);
  animation:floatUp linear infinite;
}
@keyframes floatUp{
  0%{transform:translateY(0) scale(1);opacity:0}
  10%{opacity:.9}
  90%{opacity:.5}
  100%{transform:translateY(-110vh) scale(.4);opacity:0}
}

/* ============ 通用区块 ============ */
.section{padding:72px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .tag{
  display:inline-block;font-size:13px;letter-spacing:3px;color:var(--primary-3);
  border:1px solid var(--line);padding:5px 14px;border-radius:999px;margin-bottom:12px;
}
.sec-head h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;margin-bottom:10px}
.sec-head p{color:var(--muted);font-size:15px;max-width:640px;margin:0 auto}

/* 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(--line);
  border-radius:var(--radius);overflow:hidden;transition:.25s;cursor:pointer;
}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--primary-2)}
.cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#2a1c12}
.cover img{width:100%;height:100%;object-fit:cover;transition:.4s}
.video-card:hover .cover img{transform:scale(1.07)}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;
  background:rgba(20,10,5,.55);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  font-size:19px;color:#fff;border:1px solid rgba(255,255,255,.5);
  padding-left:4px;transition:.25s;
}
.video-card:hover .play-btn{background:var(--primary);transform:translate(-50%,-50%) scale(1.12)}
.dur{
  position:absolute;right:10px;bottom:10px;z-index:2;
  background:rgba(0,0,0,.78);padding:2px 9px;border-radius:8px;
  font-size:12px;color:#fff;
}
.vc-body{padding:14px 16px 16px}
.vc-title{
  font-size:15px;font-weight:700;line-height:1.4;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:42px;
}
.vc-desc{
  font-size:13px;color:var(--muted);margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.vc-creator{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted)}
.vc-creator img{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);object-fit:cover}
.vc-creator .name{color:var(--text);font-weight:600;max-width:92px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vc-meta{margin-left:auto;text-align:right;white-space:nowrap}
.video-empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:50px 0}

/* 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(--line);
  border-radius:var(--radius);padding:26px 14px;text-align:center;transition:.25s;
}
.creator-card:hover{transform:translateY(-6px);border-color:var(--primary-2);box-shadow:var(--shadow)}
.creator-ava{position:relative;width:84px;height:84px;margin:0 auto 12px}
.creator-ava img{width:100%;height:100%;border-radius:50%;border:2px solid var(--primary-2);object-fit:cover}
.creator-ava .star{
  position:absolute;right:-4px;bottom:2px;font-size:20px;
  filter:drop-shadow(0 2px 4px rgba(0,0,0,.5));
}
.creator-card h3{font-size:16px;margin-bottom:4px}
.creator-card .role{font-size:12px;color:var(--muted);margin-bottom:10px;line-height:1.5}
.creator-card .fans{
  display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;
  background:rgba(160,82,45,.18);color:var(--primary-3);
}

/* 平台特色 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{
  background:linear-gradient(160deg,var(--card),var(--card-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 22px;transition:.25s;
}
.feature-card:hover{transform:translateY(-6px);border-color:var(--primary-2);box-shadow:var(--shadow)}
.feature-icon{
  width:56px;height:56px;border-radius:16px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  display:flex;align-items:center;justify-content:center;
  font-size:26px;margin-bottom:16px;box-shadow:0 8px 20px rgba(160,82,45,.35);
}
.feature-card h3{font-size:17px;margin-bottom:8px}
.feature-card p{font-size:13px;color:var(--muted);line-height:1.7}

/* 数据统计 */
.stats-band{
  background:linear-gradient(135deg,#3a2010,#7a3e21 55%,#a0522d);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats-inner{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:54px 20px;text-align:center;
}
.stat-num{font-size:clamp(26px,3.6vw,40px);font-weight:800;color:#ffe3c4}
.stat-num .unit{font-size:.6em;margin-left:2px}
.stat-lab{font-size:14px;color:rgba(255,227,196,.85);margin-top:6px}

/* 用户评价 */
.tst-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tst-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.tst-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.tst-head img{width:46px;height:46px;border-radius:50%;border:2px solid var(--primary-2);object-fit:cover}
.tst-head .nm{font-weight:700;font-size:15px}
.tst-stars{color:#f5b942;font-size:13px;letter-spacing:2px}
.tst-text{font-size:14px;color:#d9cbb8;line-height:1.8}

/* 成功故事 */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.story-card{
  background:linear-gradient(165deg,var(--card),#2f2116);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;position:relative;overflow:hidden;transition:.25s;
}
.story-card:hover{transform:translateY(-6px);border-color:var(--primary-2);box-shadow:var(--shadow)}
.story-emoji{font-size:34px;margin-bottom:14px}
.story-card h3{font-size:18px;margin-bottom:10px;color:var(--primary-3)}
.story-card p{font-size:14px;color:#d9cbb8;line-height:1.8}

/* APP 展示 */
.app-wrap{display:flex;align-items:center;gap:60px;flex-wrap:wrap}
.app-left{flex:1;min-width:300px}
.app-left h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:14px}
.app-left>p{color:var(--muted);margin-bottom:28px}
.app-points{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.app-point{
  display:flex;gap:12px;background:var(--card);
  border:1px solid var(--line);border-radius:14px;padding:16px;transition:.25s;
}
.app-point:hover{border-color:var(--primary-2)}
.app-point .ic{font-size:22px;flex-shrink:0}
.app-point h4{font-size:15px;margin-bottom:4px}
.app-point p{font-size:12.5px;color:var(--muted);line-height:1.6}
.app-right{flex-shrink:0;margin:0 auto}
.phone{
  width:280px;border-radius:40px;background:#0d0907;
  border:3px solid #4a352a;padding:12px;
  box-shadow:0 30px 70px rgba(0,0,0,.6),0 0 0 1px var(--line);
}
.phone-screen{position:relative;border-radius:30px;overflow:hidden;background:#241a13}
.phone-screen img{width:100%;height:560px;object-fit:cover}
.phone-notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:110px;height:22px;background:#0d0907;border-radius:999px;z-index:2;
}

/* ============ 内页 ============ */
.page-hero{
  position:relative;overflow:hidden;text-align:center;padding:72px 20px;
  background:linear-gradient(135deg,#4d2b16,#a0522d 60%,#c96f33);
}
.page-hero h1{
  position:relative;z-index:2;
  font-size:clamp(28px,4.4vw,44px);font-weight:800;margin-bottom:12px;
}
.page-hero p{position:relative;z-index:2;color:#ffe4cc;max-width:640px;margin:0 auto}
.filter-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.filter-bar button{
  padding:8px 20px;border-radius:999px;border:1px solid var(--line);
  background:transparent;color:var(--muted);cursor:pointer;font-size:14px;transition:.2s;
}
.filter-bar button:hover{color:var(--text);border-color:var(--primary-2)}
.filter-bar button.active{
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  color:#fff;border-color:transparent;
}

/* 关于我们 */
.about-text{max-width:820px;margin:0 auto 56px;text-align:center}
.about-text p{color:#d9cbb8;font-size:15.5px;line-height:2;margin-bottom:18px;text-align:left}
.about-text .lead{font-size:17px;color:var(--text);font-weight:600}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{
  background:linear-gradient(160deg,var(--card),var(--card-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;
  text-align:center;transition:.25s;
}
.value-card:hover{transform:translateY(-6px);border-color:var(--primary-2)}
.value-card .ic{font-size:34px;margin-bottom:14px}
.value-card h3{font-size:18px;margin-bottom:10px;color:var(--primary-3)}
.value-card p{font-size:14px;color:var(--muted);line-height:1.8}
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.contact-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 20px;text-align:center;transition:.25s;
}
.contact-card:hover{border-color:var(--primary-2);transform:translateY(-4px)}
.contact-card .ic{font-size:30px;margin-bottom:10px}
.contact-card h4{font-size:15px;margin-bottom:6px}
.contact-card p{font-size:13.5px;color:var(--muted)}

/* ============ 页脚 ============ */
.footer{background:#100b08;border-top:1px solid var(--line);padding:60px 0 0}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;
  gap:36px;padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:330px;line-height:1.8}
.footer h4{font-size:16px;margin-bottom:16px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:.2s}
.footer-links a:hover{color:var(--primary-3)}
.copyright{border-top:1px solid var(--line);padding:20px 0;text-align:center;font-size:13px;color:var(--muted)}

/* ============ 响应式 ============ */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .creator-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .stats-inner{grid-template-columns:repeat(2,1fr)}
  .tst-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .nav-links{
    position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:2px;
    background:#17110d;border-bottom:1px solid var(--line);
    padding:14px 20px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .nav-auth .btn{padding:7px 14px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .vc-title{font-size:14px;min-height:40px}
  .creator-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .tst-grid,.story-grid,.value-grid{grid-template-columns:1fr}
  .app-points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-inner{padding:64px 16px 56px}
  .section{padding:52px 0}
}