/* ============ 设计令牌 ============ */
:root{
  --bg:#edf0f8;
  --card:#ffffff;
  --ink:#141720;
  --ink-2:#5c6472;
  --muted:#8b919c;
  --blue:#2b52ff;
  --blue-soft:#eaf0ff;
  --line:#e7eaf3;
  --shadow:0 1px 2px rgba(22,30,64,.04), 0 14px 30px -22px rgba(22,30,64,.45);
  --r-card:16px;
  --r-tile:9px;
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:14px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
img{max-width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;
  text-align:center;
  padding:44px 16px 26px;
  background:
    radial-gradient(130% 100% at 50% -34%, #ffffff 0%, rgba(255,255,255,0) 62%),
    linear-gradient(180deg,#f6f8fe 0%, rgba(246,248,254,0) 100%);
  border-bottom:1px solid #e6eaf5;
}
@media (min-width:768px){.hero{padding:70px 28px 34px}}
@media (min-width:1200px){.hero{padding:84px 40px 40px}}

.hero-mark{
  width:52px;height:52px;display:block;margin:0 auto;
  filter:drop-shadow(0 12px 20px rgba(43,62,255,.26));
}
@media (min-width:768px){.hero-mark{width:72px;height:72px}}

.hero h1{
  margin:20px 0 0;
  font-size:clamp(40px,7.2vw,74px);
  line-height:1.02;
  letter-spacing:-.02em;
  font-weight:800;
}
.hero-sub{
  margin:22px auto 0;max-width:620px;
  font-size:14.5px;line-height:1.8;color:var(--ink-2);
}
@media (min-width:768px){.hero-sub{font-size:15.5px}}
.hero-stat{
  margin:15px 0 0;
  font-size:12px;color:#98a0ad;letter-spacing:.09em;
}
.hero-stat b{color:var(--ink);font-weight:700;font-size:13.5px;letter-spacing:0}

/* 居中搜索 */
.search{
  display:flex;align-items:center;gap:10px;
  max-width:600px;margin:26px auto 0;
  height:52px;padding:0 16px;
  background:#fff;border:1px solid #e3e8f3;border-radius:14px;
  box-shadow:0 10px 26px -20px rgba(22,30,64,.6);
  transition:border-color .16s ease, box-shadow .16s ease;
}
.search:focus-within{border-color:#c3d0f8;box-shadow:0 12px 30px -18px rgba(43,82,255,.5)}
.search svg{width:18px;height:18px;flex:none;opacity:.5}
.search input{
  flex:1;min-width:0;height:100%;border:0;background:none;outline:none;
  font-size:16px;color:var(--ink);
}
.search input::placeholder{color:#a4aab6}
.search .clear{display:none;width:22px;height:22px;border-radius:50%;background:#e3e8f2;color:#5c6472;font-size:12px;line-height:22px;text-align:center;flex:none}
.search.has .clear{display:block}

/* ============ 主体 ============ */
.wrap,.container{max-width:1200px;margin:0 auto;padding:24px 24px 56px}
@media (min-width:768px){.wrap,.container{padding:32px 32px 64px}}
@media (min-width:1200px){.wrap,.container{padding:36px 40px 72px}}

/* 分类导航 */
.pills{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:1000px;margin:24px auto 0;padding:12px 16px;background:#fff;border:1px solid #e8ebf5;border-radius:16px;box-shadow:0 2px 8px rgba(79,70,229,.06)}
.pill{
  padding:7px 14px;border-radius:20px;
  font-size:13px;font-weight:500;color:#525a68;
  background:#fff;border:1px solid #e8ebf5;
  transition:all .2s ease;
  display:inline-flex;align-items:center;gap:4px;
}
.pill:hover{color:#4f46e5;background:#f0f3ff;border-color:#c7d2fe}
.pill[aria-pressed="true"],.pill.active{color:#fff;font-weight:600;background:linear-gradient(135deg,#4f46e5,#7c3aed);border-color:transparent;box-shadow:0 2px 8px rgba(79,70,229,.2)}
.pill:focus-visible{outline:2px solid #b9c8ff;outline-offset:3px}

/* ============ 卡片栅格 ============ */
.grid{
  margin-top:16px;
  display:grid;grid-template-columns:1fr;gap:14px;
}
@media (min-width:720px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}}
@media (min-width:1080px){.grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:18px}}

/* 筛选后卡片数量变少时：整体居中、卡片加宽，避免挤在左侧 */
@media (min-width:720px){
  .grid.f1{grid-template-columns:minmax(0,600px);justify-content:center}
  .grid.f2{grid-template-columns:repeat(2,minmax(0,470px));justify-content:center}
  .grid.f3{grid-template-columns:repeat(3,minmax(0,380px));justify-content:center}
  .grid.f4{grid-template-columns:repeat(4,minmax(0,380px));justify-content:center}
}

.card{
  background:#fff;
  border-radius:16px;
  box-shadow:0 1px 3px rgba(0,0,0,0.04);
  border:1px solid #eef0f8;
  padding:20px 18px 16px;
  min-width:0;
  transition:all .25s cubic-bezier(.4,0,.2,1);
  position:relative;
  overflow:hidden;
}
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--card-accent,linear-gradient(90deg,#4f46e5,#7c3aed));
  opacity:.85;
}
.card:hover{
  transform:translateY(-3px);
  box-shadow:0 12px 32px rgba(79,70,229,0.1);
  border-color:#d8dcff;
}
.card-footer{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:14px;padding-top:14px;border-top:1px solid #f0f0ff;
}
.enter-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 18px;border-radius:20px;
  background:linear-gradient(135deg,#5b5bf0,#7c3aed);
  color:#fff !important;font-size:13px;font-weight:600;
  text-decoration:none;
  box-shadow:0 4px 12px rgba(91,91,240,0.25);
  transition:all 0.2s;
}
.enter-btn:hover{
  box-shadow:0 6px 20px rgba(91,91,240,0.4);
  transform:translateX(2px);
}
@media (min-width:1080px){.card{padding:24px 20px 18px}}

/* 每个榜单板块不同颜色 */
.card:nth-child(1){--card-accent:linear-gradient(90deg,#f59e0b,#f97316);--bar-color:linear-gradient(180deg,#fbbf24,#f97316)}
.card:nth-child(2){--card-accent:linear-gradient(90deg,#ef4444,#f43f5e);--bar-color:linear-gradient(180deg,#f87171,#f43f5e)}
.card:nth-child(3){--card-accent:linear-gradient(90deg,#8b5cf6,#6366f1);--bar-color:linear-gradient(180deg,#a78bfa,#6366f1)}
.card:nth-child(4){--card-accent:linear-gradient(90deg,#ec4899,#f472b6);--bar-color:linear-gradient(180deg,#f472b6,#ec4899)}
.card:nth-child(5){--card-accent:linear-gradient(90deg,#06b6d4,#3b82f6);--bar-color:linear-gradient(180deg,#22d3ee,#3b82f6)}
.card:nth-child(6){--card-accent:linear-gradient(90deg,#10b981,#22c55e);--bar-color:linear-gradient(180deg,#34d399,#22c55e)}
.card:nth-child(7){--card-accent:linear-gradient(90deg,#f97316,#eab308);--bar-color:linear-gradient(180deg,#fb923c,#eab308)}
.card:nth-child(8){--card-accent:linear-gradient(90deg,#6366f1,#8b5cf6);--bar-color:linear-gradient(180deg,#818cf8,#8b5cf6)}
.card:nth-child(9){--card-accent:linear-gradient(90deg,#0ea5e9,#06b6d4);--bar-color:linear-gradient(180deg,#38bdf8,#06b6d4)}
.card:nth-child(10){--card-accent:linear-gradient(90deg,#d946ef,#a855f7);--bar-color:linear-gradient(180deg,#e879f9,#a855f7)}
.card:nth-child(11){--card-accent:linear-gradient(90deg,#84cc16,#22c55e);--bar-color:linear-gradient(180deg,#a3e635,#22c55e)}
.card:nth-child(12){--card-accent:linear-gradient(90deg,#f43f5e,#fb923c);--bar-color:linear-gradient(180deg,#fb7185,#fb923c)}
.card:nth-child(13){--card-accent:linear-gradient(90deg,#3b82f6,#8b5cf6);--bar-color:linear-gradient(180deg,#60a5fa,#8b5cf6)}
.card:nth-child(14){--card-accent:linear-gradient(90deg,#14b8a6,#06b6d4);--bar-color:linear-gradient(180deg,#2dd4bf,#06b6d4)}
.card:nth-child(15){--card-accent:linear-gradient(90deg,#e11d48,#f97316);--bar-color:linear-gradient(180deg,#f43f5e,#f97316)}
.card:nth-child(16){--card-accent:linear-gradient(90deg,#7c3aed,#ec4899);--bar-color:linear-gradient(180deg,#8b5cf6,#ec4899)}
.card:nth-child(17){--card-accent:linear-gradient(90deg,#059669,#10b981);--bar-color:linear-gradient(180deg,#10b981,#34d399)}
.card:nth-child(18){--card-accent:linear-gradient(90deg,#dc2626,#f59e0b);--bar-color:linear-gradient(180deg,#ef4444,#fbbf24)}

.ch{
  display:flex;align-items:center;gap:9px;
  margin:0 0 10px;padding-left:2px;
}
.ch .bar{
  width:4px;height:22px;border-radius:3px;flex:none;
  background:var(--bar-color,linear-gradient(180deg,#5b83ff,#2b52ff));
}
.ch h2{font-size:18px;font-weight:700;margin:0;letter-spacing:-.01em}

.list{display:flex;flex-direction:column;gap:2px}
.row{
  display:grid;
  grid-template-columns:20px 34px minmax(0,1fr) 13px;
  column-gap:10px;align-items:center;
  padding:11px 6px;margin:0 -6px;border-radius:10px;
  transition:background .16s ease;
}
.row:hover{background:#f5f7ff}
.row:focus-visible{outline:2px solid #b9c8ff;outline-offset:0}
.rank{
  font-family:"Times New Roman",Georgia,"Songti SC",serif;
  font-style:italic;font-weight:700;font-size:17px;line-height:1;
  text-align:right;letter-spacing:-.5px;
  padding-right:1px;
}
.r1{background:linear-gradient(180deg,#ff6a45,#dc1c17);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#e8382a}
.r2{background:linear-gradient(180deg,#ff8a45,#e8441a);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#ee5b22}
.r3{background:linear-gradient(180deg,#ffb347,#f07417);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#f0901c}
.rx{color:#a8aeb9}

.ic{
  width:34px;height:34px;border-radius:var(--r-tile);
  display:grid;place-items:center;
  font-size:14px;font-weight:700;letter-spacing:-.3px;
  box-shadow:0 1px 2px rgba(20,28,50,.08);
  overflow:hidden;
}
.txt{min-width:0}
.nm{
  display:block;font-size:14px;font-weight:600;color:#191c24;
  line-height:1.35;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.ds{
  display:block;font-size:11.5px;color:var(--muted);line-height:1.4;margin-top:1px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.go{width:13px;height:13px;opacity:0;transition:opacity .16s ease;color:#7b83f0}
.row:hover .go,.row:focus-visible .go{opacity:1}
.go svg{width:13px;height:13px;display:block}

.empty{
  display:none;text-align:center;padding:48px 16px;color:var(--ink-2);
  background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow);
}
.empty h3{margin:0 0 6px;font-size:16px;font-weight:600;color:var(--ink)}
.empty p{margin:0;font-size:13.5px}
.empty .again{margin-top:14px;color:var(--blue);font-weight:600;font-size:13px;text-decoration:underline;text-underline-offset:3px}

/* ============ 页脚 ============ */
.foot{
  border-top:1px solid #e2e6f0;
  margin-top:6px;
  padding:54px 24px 76px;
  text-align:center;
  color:#959cab;font-size:12.5px;
}
.foot .fmark{width:28px;height:28px;display:block;margin:0 auto 18px;opacity:.8}
.foot .fc{margin:0;line-height:1.75}
.foot .links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-top:16px}
.foot .links button{color:#7d8494;font-size:12.5px}
.foot .links button:hover{color:var(--ink)}

/* ============ Toast ============ */
.toast{
  position:fixed;left:50%;bottom:28px;z-index:80;
  transform:translate(-50%,14px);
  background:#191d26;color:#fff;font-size:13px;
  padding:9px 16px;border-radius:10px;
  opacity:0;pointer-events:none;transition:all .22s ease;
  max-width:80vw;
}
.toast.on{opacity:1;transform:translate(-50%,0)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}


/* Prompt cards v2 */
.prompt-card{padding:20px 18px 16px}
.prompt-box{background:#f8f9ff;border-radius:12px;padding:16px;margin-top:8px}
.prompt-section{margin-bottom:12px}
.prompt-section:last-child{margin-bottom:0}
.prompt-label{display:inline-block;font-size:11px;font-weight:700;color:var(--blue);background:var(--blue-soft);padding:2px 8px;border-radius:6px;margin-bottom:6px}
.prompt-section p{margin:0;font-size:13.5px;line-height:1.6;color:#333;white-space:pre-line}
.prompt-section ul{margin:0;padding-left:18px;font-size:13px;line-height:1.7;color:#444}
.prompt-section li{margin-bottom:3px}
.prompt-icon{margin-right:4px}
.copy-btn{display:block;width:100%;margin-top:12px;padding:8px;background:var(--blue);color:#fff;border:none;border-radius:8px;font-size:13px;cursor:pointer;transition:background .2s}
.copy-btn:hover{background:#4a4ae8}

/* 返回顶部按钮 */
.back-to-top{position:fixed;bottom:40px;right:40px;width:48px;height:48px;background:linear-gradient(135deg,#5b5bf0,#7c3aed);color:#fff;border:none;border-radius:50%;font-size:18px;cursor:pointer;box-shadow:0 4px 12px rgba(91,91,240,0.4);display:none;align-items:center;justify-content:center;z-index:999;transition:all .3s}
.back-to-top.show{display:flex}
.back-to-top:hover{transform:translateY(-2px)}