:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --ink:#0f172a;
  --ink-2:#475569;
  --ink-3:#94a3b8;
  --line:#e6ebf2;
  --brand:#1d4ed8;
  --brand-soft:#eef2ff;
  --up:#dc2626;
  --down:#059669;
  --warn:#b45309;
  --warn-soft:#fffbeb;
  --radius:16px;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.05);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}

/* header */
.hero{
  background:linear-gradient(135deg,#1e3a8a 0%,#1d4ed8 55%,#3b82f6 100%);
  color:#fff;padding:34px 0 30px;
}
.hero .wrap{display:flex;flex-direction:column;gap:6px}
.brandline{display:flex;align-items:center;gap:10px;font-size:13px;opacity:.9;letter-spacing:.06em}
.brandline .dot{width:6px;height:6px;border-radius:50%;background:#fbbf24}
h1{font-size:30px;line-height:1.25;margin:0;font-weight:800;letter-spacing:-.02em}
.sub{font-size:15px;opacity:.9;margin:0}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);
  padding:5px 12px;border-radius:999px;font-size:13px;backdrop-filter:blur(4px);
}

/* search */
.searchbox{position:relative;margin:-22px auto 0;z-index:2}
.searchbox input{
  width:100%;padding:15px 18px 15px 48px;font-size:16px;
  border:1px solid var(--line);border-radius:14px;background:#fff;
  box-shadow:var(--shadow);outline:none;color:var(--ink);
}
.searchbox input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.searchbox .ico{position:absolute;left:17px;top:50%;transform:translateY(-50%);color:var(--ink-3)}
.sresults{
  background:#fff;border:1px solid var(--line);border-radius:14px;margin-top:8px;
  box-shadow:var(--shadow);max-height:340px;overflow:auto;display:none;
}
.sresults.show{display:block}
.sres{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;align-items:center}
.sres:last-child{border-bottom:0}
.sres .t{font-weight:600}
.sres .m{font-size:13px;color:var(--ink-3)}
.sempty{padding:14px 16px;color:var(--ink-3);font-size:14px}

/* sections */
section{margin:30px 0}
.sect-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:14px;flex-wrap:wrap}
h2{font-size:20px;margin:0;font-weight:800;letter-spacing:-.01em}
.hint{font-size:13px;color:var(--ink-3)}

/* exam composition */
.exam{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
}
.exam-top{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.total{border:1px solid var(--line);border-radius:12px;padding:8px 14px;text-align:center;background:var(--brand-soft);border-color:#c7d2fe}
.total b{display:block;font-size:26px;line-height:1.1;color:var(--brand);font-weight:800}
.total span{font-size:12px;color:var(--brand)}
.comp{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
.comp-item{border:1px solid var(--line);border-radius:12px;padding:13px 14px;background:#fcfdff}
.comp-item .n{font-size:14px;font-weight:700;margin-bottom:3px}
.comp-item .s{font-size:22px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.comp-item .s small{font-size:12px;font-weight:600;color:var(--ink-3);margin-left:2px}
.comp-item .d{font-size:12.5px;color:var(--ink-2);margin-top:6px;line-height:1.5}
.bar{height:6px;border-radius:4px;background:#e2e8f0;margin-top:9px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,#1d4ed8,#60a5fa)}

/* category grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.cat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);transition:.18s;display:block;position:relative;
}
.cat:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(29,78,216,.13);border-color:#c7d2fe}
.cat .top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.cat .icon{font-size:26px;line-height:1}
.cat .name{font-size:17px;font-weight:800;letter-spacing:-.01em}
.cat .pub{font-size:12.5px;color:var(--ink-2);margin-top:2px}
.cat .lines{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.lrow{display:flex;align-items:baseline;justify-content:space-between;gap:8px;font-size:13.5px;color:var(--ink-2)}
.lrow .v{display:flex;align-items:baseline;gap:6px}
.lrow .sc{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.delta{font-size:12px;font-weight:700}
.delta.up{color:var(--up)}
.delta.down{color:var(--down)}
.delta.flat{color:var(--ink-3)}
.tag{
  display:inline-block;font-size:11.5px;padding:2px 8px;border-radius:6px;
  background:#f1f5f9;color:var(--ink-2);margin-right:4px;
}
.tag.math{background:#eff6ff;color:#1d4ed8}
.tag.zh{background:#fdf2f8;color:#be185d}
.tag.split{background:#fef3c7;color:#92400e}

/* table */
.tablewrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:auto;box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:660px;font-size:14px}
th,td{padding:11px 13px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left;position:sticky;left:0;background:var(--card)}
thead th{background:#f8fafc;font-size:12.5px;color:var(--ink-2);font-weight:700;position:sticky;top:0;z-index:1}
thead th:first-child{z-index:2}
tbody tr:hover td{background:#fafcff}
td .sc{font-weight:700}
td .na{color:var(--ink-3)}
.mini{font-size:12px;color:var(--ink-3);font-weight:600}

/* detail page */
.back{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);margin-bottom:14px;font-weight:600}
.dhead{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:18px}
.dhead h1{font-size:26px;display:flex;align-items:center;gap:12px}
.kv{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.kv span{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:5px 11px;font-size:13px}
.kv span b{font-weight:700}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px}
.panel h3{margin:0 0 14px;font-size:17px;font-weight:800}
.subj{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.subj:last-child{border-bottom:0}
.subj .nm{flex:1;font-size:14.5px}
.subj .pc{width:132px;display:flex;align-items:center;gap:9px}
.subj .pc .bar{flex:1;margin:0}
.subj .pc .num{width:42px;text-align:right;font-size:13px;font-weight:700;color:var(--ink-2)}
.subj .pc .num.null{color:var(--ink-3);font-weight:500;font-size:12px}
.major-tags{display:flex;flex-wrap:wrap;gap:7px}
.major-tags span{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:5px 11px;font-size:13px}
.note{
  background:var(--warn-soft);border:1px solid #fde68a;color:#78350f;
  border-radius:12px;padding:12px 14px;font-size:13.5px;line-height:1.6;
}
.note.blue{background:var(--brand-soft);border-color:#c7d2fe;color:#1e3a8a}
.chartbox{width:100%;overflow:auto}
.srcs{font-size:13px;color:var(--ink-2);line-height:1.9}
.srcs a{color:var(--brand);word-break:break-all}

/* plans / filters */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.filters select,.filters input{
  padding:10px 12px;font-size:15px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);outline:none;font-family:inherit;
}
.filters select:focus,.filters input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.stat{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.stat div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:11px 16px;box-shadow:var(--shadow)}
.stat b{display:block;font-size:21px;color:var(--brand);font-weight:800;letter-spacing:-.02em}
.stat span{font-size:12.5px;color:var(--ink-2)}
.kind{font-size:11.5px;padding:1px 7px;border-radius:5px;background:#f1f5f9;color:var(--ink-2);margin-left:6px;white-space:nowrap}
.kind.g{background:#eff6ff;color:#1d4ed8}
.kind.v{background:#ecfdf5;color:#047857}
.req{font-size:12.5px;color:var(--ink-2);max-width:300px;white-space:normal;line-height:1.45}
.batch{font-size:11.5px;padding:1px 7px;border-radius:5px;background:#f8fafc;color:var(--ink-2);white-space:nowrap}
.batch.sp{background:#fef3c7;color:#92400e}

footer{padding:30px 0 46px;color:var(--ink-3);font-size:13px;border-top:1px solid var(--line);margin-top:36px}

@media (max-width:640px){
  h1{font-size:24px}
  .hero{padding:26px 0 24px}
  .grid{grid-template-columns:1fr}
  .subj .pc{width:104px}
  .wrap{padding:0 14px}
}