/* 文档页（隐私政策 / 用户协议）共享样式
   token 与 assets/site.css 完全一致：纸底 + 2px 墨线 + 单一红 + 小圆角 */

:root{
  --ink:#14121c;--ink-2:#1e1b28;--paper:#fdf9f2;--paper-2:#f4ede1;--line:#e7e0d4;
  --muted:#6b6478;--text:#3a3546;--red:#e2341d;--red-ink:#c22a15;--red-lift:#ff6a4d;
  --sun:#ffc93c;--on-ink:#c9c2d4;--r:6px;
  --font:"Inter","Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--paper);color:var(--text);line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:3px solid var(--red);outline-offset:2px;border-radius:4px}
.wrap{width:min(1080px,100% - 40px);margin-inline:auto}

/* header：纸底 + 3px 墨色底线 */
header.hd{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:3px solid var(--ink)}
.hd-in{display:flex;align-items:center;gap:24px;height:66px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:900;font-size:19px}
.logo .bubble{width:34px;height:34px;border-radius:11px 11px 11px 3px;background:var(--sun);display:grid;place-items:center;color:var(--ink);font-weight:900;font-size:17px;border:2px solid var(--ink)}
.hd nav{margin-left:auto;display:flex;gap:26px}
.hd nav a{color:var(--muted);font-size:14.5px;font-weight:700}
.hd nav a:hover,.hd nav a[aria-current]{color:var(--ink)}
.hd .btn{display:inline-flex;align-items:center;padding:9px 18px;border-radius:var(--r);font-weight:800;font-size:14.5px;background:var(--red);color:#fff;border:2px solid var(--paper)}
@media (max-width:880px){.hd nav{display:none}.hd .btn{margin-left:auto}}

/* doc hero：纸2 底（与主站 Hero 一致） */
.dhero{background:var(--paper-2);padding:clamp(34px,5vw,58px) 0 clamp(30px,4.4vw,50px);position:relative;overflow:hidden;border-bottom:3px solid var(--ink)}
.dhero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(20,18,28,.10) 1px,transparent 1.4px);background-size:14px 14px;mask-image:radial-gradient(110% 90% at 85% 10%,#000,transparent 70%)}
.dhero .wrap{position:relative}
.dhero h1{font-size:clamp(28px,4.2vw,42px);font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.dhero p{margin-top:14px;color:var(--text);max-width:62ch;font-size:15.5px}
.dhero .meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:22px;font-size:13px;color:var(--muted)}
.dhero .meta b{color:var(--red-ink);font-weight:800}

/* layout */
.doc{display:grid;grid-template-columns:236px 1fr;gap:clamp(28px,5vw,60px);padding:clamp(38px,6vw,64px) 0 clamp(50px,7vw,80px);align-items:start}
.toc{position:sticky;top:88px}
.toc h4{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--red-ink);margin:0 0 12px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t;border-left:2px solid var(--line)}
.toc li{counter-increment:t}
.toc a{display:block;padding:7px 0 7px 16px;margin-left:-2px;border-left:2px solid transparent;font-size:14px;color:var(--muted)}
.toc a::before{content:counter(t,decimal-leading-zero) "  ";font-size:11.5px;font-weight:800;color:rgba(107,100,120,.75)}
.toc a:hover,.toc a.on{color:var(--ink);border-left-color:var(--red);font-weight:700}
.toc summary{display:none}
@media (max-width:960px){
  .doc{grid-template-columns:1fr;gap:20px}
  .toc{position:static;background:var(--paper-2);border:2px solid var(--ink);border-radius:var(--r);padding:14px 18px}
  .toc summary{display:flex;align-items:center;gap:8px;cursor:pointer;font-weight:800;font-size:15px;color:var(--ink)}
  .toc summary::marker,.toc summary::-webkit-details-marker{display:none}
  .toc summary::after{content:"▾";margin-left:auto;color:var(--red-ink);font-size:14px}
  .toc[open] summary::after{content:"▴"}
  .toc ol{margin-top:10px}
}

/* article */
.art{max-width:72ch}
.art section{padding:0;margin:0}
.art h2{font-size:clamp(19px,2.2vw,23px);font-weight:900;margin:38px 0 12px;padding-top:24px;border-top:2px dashed var(--line);scroll-margin-top:88px;color:var(--ink)}
.art h2:first-of-type{margin-top:0;padding-top:0;border-top:0}
.art h2 .n{color:var(--red-ink);font-weight:900;margin-right:8px}
.art h3{font-size:16px;font-weight:900;margin:22px 0 8px;color:var(--ink)}
.art p{margin:10px 0;font-size:15px}
.art ul,.art ol{margin:10px 0;padding-left:22px;font-size:15px}
.art li{margin:6px 0}
.art strong{color:var(--ink)}
.art .lead{font-size:16px;color:var(--ink)}
.callout{background:#fff8e6;border:2px solid #ffe3a3;border-radius:var(--r);padding:16px 20px;margin:18px 0;font-size:14.5px;color:#7a5200}
.callout b{color:#7a5200}
.tbl{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0}
.tbl th,.tbl td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.tbl th{background:var(--paper-2);font-weight:800;font-size:13.5px;color:var(--ink)}
.tbl td:first-child{white-space:nowrap;font-weight:700}
.mark{background:linear-gradient(transparent 62%,#ffe08a 62%);font-weight:800}

/* doc footer */
.docfoot{border-top:2px dashed var(--line);margin-top:44px;padding-top:26px;display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted)}
.docfoot a{font-weight:800;color:var(--ink);border-bottom:2px solid var(--sun)}
.docfoot a:hover{color:var(--red-ink)}

footer{background:var(--ink);color:var(--on-ink);padding:56px 0 34px;font-size:14px}
.ft{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
.ft h4{color:#fff;font-size:13px;letter-spacing:.16em;text-transform:uppercase;margin:0 0 12px}
.ft ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.ft a:hover{color:#fff}
.ft .brand{color:#fff}
.ft .brand .logo{color:#fff}
.ft .brand p{margin-top:12px;font-size:13.5px;max-width:34ch}
.ft-bot{border-top:1px solid #2e2a38;margin-top:36px;padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px}
@media (max-width:760px){.ft{grid-template-columns:1fr 1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}