:root{
  --bg:#f7f6f3; --paper:#ffffff; --ink:#1d1f23; --ink2:#4a4f57; --muted:#80868f;
  --line:#e3e1dc; --soft:#f1efea; --accent:#1f4e79;
  --red:#b3261e; --red-bg:#fbeceb; --amber:#9a6200; --amber-bg:#fdf3e1;
  --green:#2e7d4f; --green-bg:#e9f5ee; --gray-bg:#eeeeec;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#15171a; --paper:#1d2024; --ink:#e8e6e1; --ink2:#bfc2c7; --muted:#8d929a;
    --line:#2f3338; --soft:#24272c; --accent:#7fb0e0;
    --red:#f0857d; --red-bg:#3a1f1d; --amber:#e9b25a; --amber-bg:#352a17;
    --green:#7fcf9d; --green-bg:#1b3125; --gray-bg:#2a2d31;
  }
}
:root[data-theme="dark"]{
  --bg:#15171a; --paper:#1d2024; --ink:#e8e6e1; --ink2:#bfc2c7; --muted:#8d929a;
  --line:#2f3338; --soft:#24272c; --accent:#7fb0e0;
  --red:#f0857d; --red-bg:#3a1f1d; --amber:#e9b25a; --amber-bg:#352a17;
  --green:#7fcf9d; --green-bg:#1b3125; --gray-bg:#2a2d31;
}
/* 重点高亮：实色黄底+深色字（马克笔效果），深色模式用柔和琥珀黄 */
:root{--hl-paint:#ffe58f;--hl-ink:#14161a;--num:#a26a00}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--hl-paint:#e9c349;--hl-ink:#15130c;--num:#ffd54a}}
:root[data-theme="dark"]{--hl-paint:#e9c349;--hl-ink:#15130c;--num:#ffd54a}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
a{color:var(--accent);text-underline-offset:2px}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
header.hero{background:var(--paper);border-bottom:1px solid var(--line);padding:56px 0 40px}
.kicker{font-size:13px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
h1{font-size:34px;line-height:1.25;margin:10px 0 14px;letter-spacing:-.01em}
.lead{font-size:17px;color:var(--ink2);max-width:760px;margin:0}
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
.meta div{border-top:2px solid var(--ink);padding-top:8px}
.meta small{display:block;font-size:12px;color:var(--muted)}
.meta strong{font-size:15px}
nav.toc{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
nav.toc .wrap{display:flex;gap:18px;overflow-x:auto;white-space:nowrap;padding-top:10px;padding-bottom:10px;font-size:14px;scrollbar-width:none}
nav.toc a{color:var(--ink2);text-decoration:none}
nav.toc a:hover{color:var(--accent)}
main{padding:24px 0 64px}
section{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:28px 28px 22px;margin:20px 0}
h2{font-size:25px;margin:0 0 14px;line-height:1.35}
h2 .no{color:var(--muted);font-weight:500;margin-right:8px}
h3{font-size:19px;margin:26px 0 10px}
p{margin:0 0 12px}
ul,ol{margin:0 0 12px;padding-left:22px}
li{margin:4px 0}
.verdict{border-left:4px solid var(--red);background:var(--red-bg);padding:16px 18px;border-radius:0 8px 8px 0;margin:4px 0 16px}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0}
.kpi{background:var(--soft);border-radius:8px;padding:14px 16px}
.kpi b{display:block;font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums}
.kpi span{font-size:13px;color:var(--ink2)}
.tbl{overflow-x:auto;margin:12px 0 16px;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;font-size:15.5px;line-height:1.7;min-width:600px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--soft);font-weight:600;color:var(--ink2);white-space:nowrap}
tr:last-child td{border-bottom:none}
td.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.tag{display:inline-block;font-size:12px;font-weight:600;padding:1px 8px;border-radius:999px;white-space:nowrap}
.t-red{color:var(--red);background:var(--red-bg)}
.t-amber{color:var(--amber);background:var(--amber-bg)}
.t-green{color:var(--green);background:var(--green-bg)}
.t-gray{color:var(--ink2);background:var(--gray-bg)}
figure{margin:14px 0 18px}
figure img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:6px;background:#fff}
figcaption{font-size:14px;color:var(--muted);margin-top:6px}
.figs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.figs figure{margin:6px 0}
.note{font-size:15.5px;color:var(--ink2);background:var(--soft);border-radius:8px;padding:12px 14px;margin:10px 0}
.claim{border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:12px 0}
.claim .h{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;margin-bottom:6px}
.claim .h b{font-size:15px}
.claim p:last-child{margin-bottom:0}
.src{font-size:13px;color:var(--ink2)}
.src li{word-break:break-all}
footer{color:var(--muted);font-size:13px;padding:0 0 40px}
section p b,section li b,section td b,.verdict strong,.note b{font-weight:700;color:var(--hl-ink);background:var(--hl-paint);padding:1px 5px;border-radius:4px;-webkit-box-decoration-break:clone;box-decoration-break:clone}
td.k{font-weight:700;color:var(--ink)}
.kpi b{color:var(--num);font-size:28px}
@media (max-width:720px){
  h1{font-size:26px}
  h2{font-size:22px}
  /* 手机：表格行变卡片，列名作字段标签 */
  .tbl{border:none;overflow:visible}
  .tbl table{min-width:0;font-size:16px}
  .tbl tr:first-child{display:none}
  .tbl tr{display:block;border:1px solid var(--line);border-radius:8px;margin:0 0 10px;padding:8px 0;background:var(--paper)}
  .tbl td{display:block;border:none;padding:3px 14px}
  .tbl td::before{content:attr(data-label);display:block;font-size:13px;color:var(--muted);font-weight:500}
  .tbl td[data-label="#"]{display:none}
  .tbl td.k{font-size:17px}
  header.hero{padding:36px 0 28px}
  .meta{grid-template-columns:1fr 1fr}
  .kpis{grid-template-columns:1fr}
  .figs{grid-template-columns:1fr}
  section{padding:20px 16px 14px}
}
@media print{
  nav.toc{display:none}
  section{break-inside:avoid-page;border:none;padding:0;margin:24px 0}
  body{background:#fff}
}
nav.toc .wrap{gap:8px;font-size:15.5px;padding-top:8px;padding-bottom:8px}
nav.toc a{padding:5px 13px;border-radius:6px;color:var(--ink2)}
nav.toc a:hover{background:var(--soft);color:var(--ink)}
nav.toc a.on{background:#bfdcff;color:#0b2f5c;font-weight:700}
.mini{background:var(--paper);border-bottom:1px solid var(--line);padding:22px 0 16px}
.mini a.home{color:var(--ink);text-decoration:none;font-weight:600;font-size:17px}
.mini .kicker{margin-bottom:2px}
.pager{display:flex;justify-content:space-between;gap:12px;margin:24px 0 8px}
.pager a{flex:1;background:#bfdcff;border:1px solid #a9cdf7;border-radius:8px;padding:14px 16px;text-decoration:none;color:#0b2f5c;font-weight:700}
.pager a:hover{background:#a9cdf7}
.pager a small{display:block;color:#3a5f8a;font-size:12px;font-weight:500}
.pager a.next{text-align:right}
.pager span{flex:1}
.chapters{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.chapters a{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:16px 18px;text-decoration:none;color:var(--ink)}
.chapters a:hover{border-color:var(--accent)}
.chapters b{display:block;font-size:16px;margin-bottom:4px}
.chapters span{font-size:14px;color:var(--ink2)}
@media (max-width:720px){.chapters{grid-template-columns:1fr}.pager{flex-direction:column}.pager a.next{text-align:left}}
.totop{position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));z-index:10;width:52px;height:52px;border-radius:8px;background:#bfdcff;border:1px solid #a9cdf7;color:#0b2f5c;font:700 14px/1 -apple-system,BlinkMacSystemFont,sans-serif;letter-spacing:.04em;display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:0 4px 14px rgba(0,0,0,.18);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,transform .2s,visibility .2s}
.totop.show{opacity:1;visibility:visible;transform:none}
nav.toc .wrap{overflow:visible;align-items:center}
nav.toc .links{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0}
nav.toc .links::-webkit-scrollbar{display:none}
.theme{flex:none;margin-left:auto;padding:5px 12px;border-radius:6px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:inherit;font-size:14px;cursor:pointer;white-space:nowrap}
.theme:hover{background:var(--soft)}
.totop:hover{background:#a9cdf7}
@media (max-width:720px){.totop{right:16px;width:46px;height:46px}}
@media print{.pager,.chapters,.totop,.theme{display:none}}