/* ===== 京剧脸谱·色彩分类 主题样式（红 #9e1f19 / 金 #e6cf95） ===== */
:root{
  --red:#9e1f19;
  --red-dark:#7a1712;
  --red-deep:#5e120e;
  --gold:#e6cf95;
  --gold-soft:#f1e3bf;
  --ink:#2a2320;
  --muted:#6b5f54;
  --paper:#fbf7f0;
  --paper-2:#f4ece0;
  --line:#e7ddca;
  --white:#fff;
  --shadow:0 8px 26px rgba(94,18,14,.10);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.7;
}
a{color:inherit;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
img{max-width:100%}

/* ===== 顶部导航（与主站红金风格一致） ===== */
.site-header{background:linear-gradient(180deg,var(--red) 0%,var(--red-dark) 100%);box-shadow:0 2px 10px rgba(0,0,0,.18);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:18px;min-height:60px}
.brand{font-family:"Noto Serif SC",serif;font-weight:700;font-size:22px;color:var(--gold);white-space:nowrap;letter-spacing:1px}
.site-nav{display:flex;flex-wrap:wrap;gap:4px 14px;margin-left:auto}
.site-nav a{color:#f6ecd9;font-size:15px;padding:6px 2px;position:relative;opacity:.92;transition:color .15s}
.site-nav a:hover{color:var(--gold)}
.site-nav a.active{color:var(--gold);font-weight:700}
.site-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--gold);border-radius:2px}
.nav-toggle{display:none;background:none;border:1px solid var(--gold);color:var(--gold);font-size:18px;border-radius:6px;padding:2px 9px;cursor:pointer}

/* ===== Hero 模块 ===== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1200px 400px at 80% -10%,rgba(230,207,149,.18),transparent 60%),
    linear-gradient(135deg,var(--red-deep) 0%,var(--red) 55%,var(--red-dark) 100%);
  color:#fff;text-align:center;padding:58px 20px 50px;
}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:22px 22px;opacity:.5;pointer-events:none}
.hero-inner{position:relative;max-width:880px;margin:0 auto}
.hero h1{font-family:"Noto Serif SC",serif;font-size:42px;margin:0 0 10px;color:#fff;letter-spacing:3px;text-shadow:0 2px 14px rgba(0,0,0,.3)}
.hero .sub{color:var(--gold);font-size:17px;letter-spacing:2px;margin:0 0 16px}
.hero p{color:#f3e7d4;font-size:15.5px;margin:0 auto;max-width:700px}

/* ===== 色彩筛选 ===== */
.filter-bar{
  position:sticky;top:60px;z-index:40;
  background:var(--paper-2);border-bottom:1px solid var(--line);
  padding:14px 0;
}
.filter-bar .container{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center}
.filter-label{font-size:14px;color:var(--muted);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  border:1px solid var(--line);background:var(--white);color:var(--ink);
  padding:6px 14px;border-radius:999px;font-size:14px;cursor:pointer;transition:.15s;
}
.chip .dot{width:13px;height:13px;border-radius:50%;border:1px solid rgba(0,0,0,.18);box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)}
.chip:hover{border-color:var(--gold);box-shadow:var(--shadow)}
.chip.active{background:var(--red);color:#fff;border-color:var(--red);font-weight:700}
.chip.active .dot{border-color:rgba(255,255,255,.6)}
.chip .count{font-size:12px;opacity:.7}

/* ===== 3 列网格（一行3个） ===== */
.section{padding:40px 0 10px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s,border-color .18s;
  border-top:4px solid var(--red);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold)}
.card .badge{position:absolute;top:10px;right:10px;background:var(--gold);color:var(--red-deep);font-size:11.5px;font-weight:700;padding:2px 8px;border-radius:999px;letter-spacing:.5px;box-shadow:0 1px 4px rgba(0,0,0,.18);z-index:2}
.card .card-img{display:block;background:var(--paper-2);border-bottom:1px solid var(--line)}
.card .card-img img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover}
.card{position:relative}
.card .card-top{padding:16px 18px 0;display:flex;align-items:center;gap:12px}
.card .swatch{width:38px;height:38px;border-radius:10px;flex:none;border:1px solid rgba(0,0,0,.18);box-shadow:inset 0 0 0 2px rgba(255,255,255,.35)}
.card h3{font-family:"Noto Serif SC",serif;margin:0;font-size:22px;color:var(--ink);line-height:1.2}
.card .py{color:var(--muted);font-size:12.5px;letter-spacing:1px;margin:2px 0 0}
.card .body{padding:10px 18px 0;color:var(--muted);font-size:14px;flex:1}
.card .body .meaning{color:var(--red);font-weight:600;font-size:14.5px}
.card .foot{padding:12px 18px 16px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.card .figure{font-size:13px;color:var(--muted)}
.card .more{color:var(--red);font-weight:700;font-size:13.5px;white-space:nowrap}
.card .more:hover{text-decoration:underline}
.card.hidden{display:none}

/* ===== 色彩图例 ===== */
.legend{background:linear-gradient(180deg,var(--paper) 0%,var(--paper-2) 100%);padding:40px 0}
.legend .grid-leg{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.leg-item{display:flex;gap:12px;align-items:flex-start;background:var(--white);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.leg-item .dot{width:20px;height:20px;border-radius:50%;flex:none;margin-top:3px;border:1px solid rgba(0,0,0,.18);box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.leg-item h4{margin:0 0 3px;font-size:16px;color:var(--red);font-family:"Noto Serif SC",serif}
.leg-item p{margin:0;font-size:13px;color:var(--muted);line-height:1.55}

/* ===== 页脚 ===== */
.site-footer{background:var(--red-deep);color:#f0e2cf;margin-top:40px}
.footer-inner{max-width:1180px;margin:0 auto;padding:34px 20px;display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between}
.f-logo{font-family:"Noto Serif SC",serif;font-size:20px;color:var(--gold);margin-bottom:8px}
.footer-brand p{margin:0;max-width:460px;font-size:13.5px;color:#e7d3bb;line-height:1.7}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{color:#f0e2cf;font-size:14px}
.footer-links a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(230,207,149,.18);text-align:center;padding:14px;font-size:12.5px;color:#d9c3a6}

/* ===== 响应式 ===== */
@media (max-width:860px){
  .site-nav{display:none;position:absolute;top:60px;left:0;right:0;background:var(--red-dark);flex-direction:column;padding:12px 20px;gap:4px}
  .site-nav.open{display:flex}
  .nav-toggle{display:inline-block;margin-left:auto}
  .hero h1{font-size:32px}
  .grid{grid-template-columns:repeat(2,1fr)}
  .legend .grid-leg{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  .grid{grid-template-columns:1fr}
  .legend .grid-leg{grid-template-columns:1fr}
}

/* ===== 色彩专属简介（?color= 筛选视图补充脸谱知识，利于收录） ===== */
.color-intro{background:var(--paper-2);border:1px solid var(--line);border-left:5px solid var(--red);border-radius:14px;padding:22px 24px;margin:26px 0 6px}
.color-intro .ci-head{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.color-intro .ci-dot{width:22px;height:22px;border-radius:50%;flex:none;border:1px solid rgba(0,0,0,.18);box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.color-intro h2{font-family:"Noto Serif SC",serif;font-size:23px;color:var(--red);margin:0}
.color-intro .ci-sub{color:var(--muted);font-size:14px;margin:0 0 10px;font-weight:600}
.color-intro #ciText{margin:0;color:var(--ink);font-size:14.5px;line-height:1.8}
.color-intro .ci-note{margin:12px 0 0;color:var(--muted);font-size:13px}