/* =========================================================
   大脸和她的朋友们工作室 · 样式表
   ========================================================= */

:root{
  --ink:#1A1A1A;
  --sub:#666666;
  --muted:#999999;
  --line:#DDDDDD;
  --bg:#FFFFFF;
  --bg-soft:#FAFAFA;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  /* 系统字体栈，离线可用 */
  font-family:-apple-system-,Qunxiang,PingFang SC,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:100px;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  padding:0 60px;background:rgba(255,255,255,0.9);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid rgba(0,0,0,0.04);z-index:100;
}
.nav-left{display:flex;gap:60px;justify-self:start;}
.nav-left a{font-size:15px;font-weight:500;letter-spacing:.5px;color:var(--ink);}
.nav-logo{justify-self:center;display:flex;align-items:center;justify-content:center;}
.nav-logo .mark{
  height:60px;display:block;border-radius:10px;object-fit:cover;
}
.nav-right{justify-self:end;display:flex;align-items:center;gap:100px;}
.book-btn{padding:10px 20px;border:1px solid var(--ink);border-radius:20px;font-size:15px;font-weight:500;}
.menu{display:flex;flex-direction:column;gap:8px;width:25px;}
.menu span{height:2px;background:var(--ink);border-radius:2px;}

/* ---------- 首屏 ---------- */
.hero{
  min-height:100vh;display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;padding:0 25px 0;
}
.hero h1{font-size:clamp(40px,7vw,70px);font-weight:1000;line-height:1.2;letter-spacing:-1px;}
.hero p{margin-top:25px;font-size:20px;color:var(--sub);font-weight:400;line-height:1.6;
}
.cta{
  margin:60px;padding:15px 30px;background:var(--ink);color:#fff;
  border-radius:30px;font-size:20px;font-weight:500;
  transition:transform .25s ease,opacity .25s ease;
}
.cta:hover{transform:translateY(-2px);opacity:.9;}

/* ---------- 悬浮卡片层（固定全屏） ---------- */
.cards-layer{position:fixed;inset:0;z-index:10;pointer-events:none;will-change:transform;}
.card{
  position:absolute;top:0;left:0;width:200px;height:200px;border-radius:20px;
  pointer-events:auto;cursor:pointer;overflow:hidden;display:block;
  box-shadow:0 20px 50px rgba(0,0,0,.15);will-change:transform;
}
.card .ph{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover;}
.card:hover{filter:brightness(1.05);}

/* ---------- 第二屏 ---------- */
.showcase{
  position:relative;min-height:110vh;display:flex;flex-direction:column;
  justify-content:flex-end;padding:80px 60px 90px;
}
.showcase-inner{max-width:1320px;width:100%;margin:0 auto;
  display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.showcase h2{font-size:clamp(30px,5vw,50px);font-weight:800;line-height:1.2;}
.showcase .desc{margin-top:20px;font-size:20px;color:var(--sub);line-height:1.6;max-width:420px;}
.explore{margin-top:30px;display:inline-block;padding:15px 30px;border:1px solid var(--ink);
  border-radius:30px;font-size:15px;font-weight:500;letter-spacing:.5px;}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg-soft);padding:90px 25px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:15px;}
.footer h3{font-size:40px;font-weight:700;}
.footer p{font-size:20px;color:var(--sub);}
.qr{margin-top:25px;display:flex;flex-direction:column;align-items:center;gap:15px;}
.qr-card{width:160px;height:160px;background:#fff;border:1px solid var(--line);
  border-radius:15px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 5px 15px rgba(0,0,0,.06);overflow:hidden;}
.qr-img{width:180px;height:180px;border-radius:10px;object-fit:cover;display:block;}
.qr-glyph{width:120px;height:120px;background:#F2F2F2;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:500;color:#BBBBBB;}
.qr-cap{font-size:15px;color:var(--muted);}
.copyright{margin-top:30px;font-size:15px;color:#999;}

/* ---------- 响应式 ---------- */
/* 平板及以下：导航改 flex，logo 绝对居中；手机仅留 logo + 汉堡 */
@media (max-width:1024px){
  .nav{display:flex;align-items:center;justify-content:space-between;}
  .nav-left{display:none;}
  .nav-logo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);}
}
@media (max-width:720px){
  .nav{padding:0 20px;}
  .book-btn{display:none;}
  .showcase{padding:80px 20px 70px;}
  .showcase-inner{flex-direction:column;align-items:flex-start;}
  .hero h1{font-size:clamp(32px,9vw,48px);}
  .footer h3{font-size:30px;}
}