/* /docs 文档页 — 与落地页 v7 同源的 Apple 设计语言
   左固定目录 + 右正文的经典文档双栏, 断点 1000px 折叠为单栏 */

:root{
  --red:#f5333f;--red-deep:#d81f2c;--red-lift:#ff5b52;
  --red-tint:rgba(245,51,63,.08);

  --bg:#f5f5f7;--card:#fff;--card-soft:#f5f5f7;
  --ink:#1d1d1f;--ink-2:#424245;--muted:#6e6e73;--faint:#86868b;
  --line:#d2d2d7;--hair:#e8e8ed;

  --green:#1d9e4b;--amber:#d97706;--blue:#0071e3;

  --r-lg:20px;--r-md:14px;--r-sm:10px;--r-pill:980px;
  --sh-1:0 2px 8px rgba(0,0,0,.04);
  --sh-2:0 4px 20px rgba(0,0,0,.07);
  --sh-3:0 12px 40px rgba(0,0,0,.11);

  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue","PingFang SC",sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.32,.72,0,1);

  --nav-h:52px;
}
[data-theme=dark]{
  --red:#ff5865;--red-deep:#f5333f;--red-lift:#ff7b7b;
  --red-tint:rgba(255,88,101,.14);

  --bg:#000;--card:#1d1d1f;--card-soft:#2c2c2e;
  --ink:#f5f5f7;--ink-2:#d1d1d6;--muted:#a1a1a6;--faint:#8e8e93;
  --line:#38383a;--hair:#2c2c2e;

  --green:#30d158;--amber:#ffd60a;--blue:#0a84ff;

  --sh-1:0 2px 8px rgba(0,0,0,.3);
  --sh-2:0 4px 20px rgba(0,0,0,.45);
  --sh-3:0 12px 40px rgba(0,0,0,.6);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px)}
body{font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:17px;line-height:1.47;letter-spacing:-.022em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"tnum" 1}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:var(--red-tint)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(0,0,0,.22);border-radius:8px;border:2px solid transparent;background-clip:content-box}
[data-theme=dark] ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.22);background-clip:content-box}
:focus-visible{outline:3px solid var(--red);outline-offset:3px;border-radius:6px}

/* ============ 导航 (与落地页同构) ============ */
.nav{position:sticky;top:0;z-index:90;height:var(--nav-h);
  background:rgba(245,245,247,.72);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.07)}
[data-theme=dark] .nav{background:rgba(0,0,0,.66);border-bottom-color:rgba(255,255,255,.1)}
.nav-in{max-width:1440px;margin:0 auto;padding:0 32px;height:100%;display:flex;align-items:center;gap:8px}
.wordmark{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:600;letter-spacing:-.028em}
.wordmark svg{display:block;flex:none;border-radius:7px}
.nav nav{margin-left:auto;display:flex;gap:4px}
.nav nav a{padding:6px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--ink);opacity:.82;
  transition:opacity .2s,background .2s}
.nav nav a:hover{opacity:1;background:rgba(0,0,0,.05)}
.nav nav a.on{opacity:1;font-weight:500}
[data-theme=dark] .nav nav a:hover{background:rgba(255,255,255,.09)}
.nav-act{display:flex;align-items:center;gap:8px;margin-left:12px}
.theme-toggle{width:32px;height:32px;border-radius:50%;border:0;background:rgba(0,0,0,.05);
  cursor:pointer;display:grid;place-items:center;color:var(--muted);transition:background .2s,color .2s}
.theme-toggle:hover{background:rgba(0,0,0,.1);color:var(--ink)}
[data-theme=dark] .theme-toggle{background:rgba(255,255,255,.11)}
.theme-toggle svg{width:15px;height:15px}
.btn{border:0;cursor:pointer;font-weight:500;font-size:15px;letter-spacing:-.01em;
  border-radius:var(--r-pill);padding:9px 20px;display:inline-flex;align-items:center;gap:6px;
  transition:background .2s,transform .2s var(--ease)}
.btn-sm{font-size:14px;padding:6px 15px}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-deep);transform:scale(1.02)}
.btn-ghost{background:rgba(0,0,0,.05);color:var(--ink)}
.btn-ghost:hover{background:rgba(0,0,0,.09)}
[data-theme=dark] .btn-ghost{background:rgba(255,255,255,.11)}

/* 移动端目录开关 */
.toc-toggle{display:none;width:32px;height:32px;border-radius:50%;border:0;
  background:rgba(0,0,0,.05);cursor:pointer;place-items:center;color:var(--muted)}
[data-theme=dark] .toc-toggle{background:rgba(255,255,255,.11)}
.toc-toggle svg{width:16px;height:16px}

/* ============ 双栏骨架 ============ */
.shell{max-width:1440px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:252px minmax(0,1fr);gap:48px;align-items:start}

/* ---- 左目录 ---- */
.toc{position:sticky;top:calc(var(--nav-h) + 24px);max-height:calc(100vh - var(--nav-h) - 48px);
  overflow-y:auto;padding:32px 0 40px;font-size:14px}
.toc-grp{margin-bottom:22px}
.toc-grp>.t{font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--faint);padding:0 10px;margin-bottom:7px}
.toc a{display:block;padding:6px 10px;border-radius:8px;color:var(--muted);
  letter-spacing:-.014em;transition:background .18s,color .18s}
.toc a:hover{background:rgba(0,0,0,.04);color:var(--ink)}
[data-theme=dark] .toc a:hover{background:rgba(255,255,255,.06)}
.toc a.on{background:var(--red-tint);color:var(--red-deep);font-weight:500}
[data-theme=dark] .toc a.on{color:var(--red)}

/* ---- 右正文 ---- */
.doc{padding:40px 0 96px;min-width:0;max-width:860px}
.doc-head{padding-bottom:36px;border-bottom:1px solid var(--line);margin-bottom:12px}
.eyebrow{font-size:15px;font-weight:600;color:var(--red);margin-bottom:10px;letter-spacing:-.01em}
.doc-head h1{font-size:46px;font-weight:600;letter-spacing:-.035em;line-height:1.08}
.doc-head p{font-size:19px;color:var(--muted);margin-top:14px;letter-spacing:-.02em;line-height:1.45}

section.blk{padding-top:52px;scroll-margin-top:calc(var(--nav-h) + 24px)}
section.blk>h2{font-size:32px;font-weight:600;letter-spacing:-.03em;line-height:1.14;margin-bottom:8px}
section.blk>.sub{font-size:17px;color:var(--muted);letter-spacing:-.018em;line-height:1.5;margin-bottom:26px}
h3.sh{font-size:21px;font-weight:600;letter-spacing:-.026em;margin:34px 0 12px}
h4.sh4{font-size:16px;font-weight:600;letter-spacing:-.022em;margin:24px 0 10px}
.doc p{font-size:16px;color:var(--ink-2);letter-spacing:-.016em;line-height:1.6;margin-bottom:14px}
.doc p.tight{margin-bottom:8px}
.doc ul,.doc ol{margin:0 0 16px 22px}
.doc li{font-size:16px;color:var(--ink-2);letter-spacing:-.016em;line-height:1.62;margin-bottom:6px}
.doc strong{font-weight:600;color:var(--ink)}
.doc a.lk{color:var(--red);font-weight:500}
.doc a.lk:hover{text-decoration:underline}

/* 行内代码 */
code.ic{font-family:var(--mono);font-size:14px;background:rgba(0,0,0,.055);
  padding:2px 6px;border-radius:6px;letter-spacing:0;color:var(--ink);white-space:nowrap}
[data-theme=dark] code.ic{background:rgba(255,255,255,.1)}

/* ============ 代码块 ============ */
.code{background:var(--card);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  margin:0 0 20px;min-width:0}
.code-head{display:flex;align-items:center;gap:10px;padding:11px 16px;border-bottom:1px solid var(--hair)}
.code-head .lang{font-size:13.5px;font-weight:600;letter-spacing:-.018em}
.code-head .note{font-size:12px;color:var(--faint);letter-spacing:-.01em}
.copy-btn{margin-left:auto;border:0;background:transparent;color:var(--muted);cursor:pointer;
  font-size:12.5px;font-weight:500;padding:4px 10px;border-radius:var(--r-pill);
  transition:background .2s,color .2s;flex:none}
.copy-btn:hover{background:rgba(0,0,0,.05);color:var(--ink)}
[data-theme=dark] .copy-btn:hover{background:rgba(255,255,255,.1)}
.copy-btn.done{color:var(--green)}
.code pre{margin:0;padding:18px 20px;background:#1d1d1f;overflow-x:auto;-webkit-overflow-scrolling:touch}
[data-theme=dark] .code pre{background:#000}
.code code{font-family:var(--mono);font-size:12.5px;line-height:1.75;color:#e8e8ed;
  white-space:pre;letter-spacing:0;display:inline-block}
.code .k{color:#ff7b7b}.code .s{color:#a8e5a8}.code .c{color:#8e8e93}
.code .f{color:#7ac7ff}.code .n{color:#e0c080}

/* 代码标签页 */
.tabs{display:flex;gap:4px;margin-bottom:12px;flex-wrap:wrap}
.tab{border:0;background:rgba(0,0,0,.05);color:var(--muted);cursor:pointer;
  font-size:13.5px;font-weight:500;padding:6px 14px;border-radius:var(--r-pill);
  letter-spacing:-.01em;transition:background .2s,color .2s}
.tab:hover{color:var(--ink)}
.tab.on{background:var(--ink);color:var(--bg)}
[data-theme=dark] .tab{background:rgba(255,255,255,.1)}
[data-theme=dark] .tab.on{background:#f5f5f7;color:#1d1d1f}
.pane{display:none}
.pane.on{display:block}

/* ============ 表格 ============ */
.tbl-wrap{background:var(--card);border-radius:var(--r-md);box-shadow:var(--sh-1);
  overflow-x:auto;margin:0 0 22px;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
thead th{text-align:left;font-size:12.5px;font-weight:500;color:var(--muted);
  letter-spacing:-.01em;padding:12px 16px;background:var(--card-soft);white-space:nowrap}
tbody td{padding:12px 16px;border-top:1px solid var(--hair);color:var(--ink-2);
  letter-spacing:-.014em;line-height:1.5;vertical-align:top}
tbody tr:hover{background:rgba(0,0,0,.018)}
[data-theme=dark] tbody tr:hover{background:rgba(255,255,255,.03)}
td.p{font-family:var(--mono);font-size:13px;color:var(--ink);letter-spacing:0;white-space:nowrap}
td.ty{font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:0;white-space:nowrap}
td.nw{white-space:nowrap}

/* ============ 提示条 ============ */
.note{border-radius:var(--r-md);padding:16px 18px;margin:0 0 20px;
  display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.55;
  letter-spacing:-.016em;background:var(--card);box-shadow:var(--sh-1)}
.note .ni{width:18px;height:18px;flex:none;margin-top:2px}
.note.tip{border-left:3px solid var(--blue)}
.note.tip .ni{color:var(--blue)}
.note.warn{border-left:3px solid var(--amber)}
.note.warn .ni{color:var(--amber)}
.note.ok{border-left:3px solid var(--green)}
.note.ok .ni{color:var(--green)}
.note p{margin:0;font-size:15px;color:var(--ink-2)}
.note p+p{margin-top:6px}

/* ============ 端点卡 ============ */
.eps{display:grid;gap:12px;margin-bottom:24px}
.ep{background:var(--card);border-radius:var(--r-md);box-shadow:var(--sh-1);
  padding:16px 18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  transition:box-shadow .3s var(--ease),transform .3s var(--ease)}
.ep:hover{box-shadow:var(--sh-2);transform:translateY(-1px)}
.verb{font-family:var(--mono);font-size:11px;font-weight:600;padding:3px 8px;border-radius:6px;
  background:var(--red-tint);color:var(--red-deep);letter-spacing:.02em;flex:none}
[data-theme=dark] .verb{color:var(--red)}
.ep .path{font-family:var(--mono);font-size:13.5px;color:var(--ink);letter-spacing:0;font-weight:500}
.ep .d{font-size:13.5px;color:var(--muted);letter-spacing:-.014em;margin-left:auto;text-align:right}

/* ============ 快捷卡 ============ */
.grid2{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr));margin-bottom:24px}
.qcard{background:var(--card);border-radius:var(--r-md);box-shadow:var(--sh-1);padding:22px 24px;
  transition:box-shadow .3s var(--ease),transform .3s var(--ease)}
.qcard:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.qcard h4{font-size:16px;font-weight:600;letter-spacing:-.022em;margin-bottom:6px}
.qcard p{font-size:14px;color:var(--muted);letter-spacing:-.014em;line-height:1.5;margin:0}
.qcard .kv{font-family:var(--mono);font-size:13px;color:var(--red);letter-spacing:0;margin-top:8px;
  word-break:break-all}

/* ============ 页脚 ============ */
footer{padding:36px 0 56px;border-top:1px solid var(--line);margin-top:64px;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--faint);letter-spacing:-.01em}
footer .sp{margin-left:auto;display:flex;gap:20px;flex-wrap:wrap}
footer a:hover{color:var(--ink)}

/* ============ 响应式 ============ */
@media(max-width:1100px){
  .shell{padding:0 26px;gap:34px;grid-template-columns:220px minmax(0,1fr)}
  .nav-in{padding:0 26px}
  .doc-head h1{font-size:40px}
  section.blk>h2{font-size:28px}
}
@media(max-width:1000px){
  .shell{grid-template-columns:minmax(0,1fr);gap:0}
  /* 目录改为可折叠抽屉 */
  .toc{position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;z-index:80;
    background:var(--bg);padding:20px 26px 40px;max-height:none;display:none}
  .toc.open{display:block}
  .toc-toggle{display:grid}
  .grid2{grid-template-columns:minmax(0,1fr)}
  .ep .d{margin-left:0;width:100%;text-align:left}
}
@media(max-width:620px){
  .shell,.nav-in{padding:0 20px}
  .nav nav{display:none}
  .doc{padding:28px 0 64px}
  .doc-head h1{font-size:32px;letter-spacing:-.028em}
  .doc-head p{font-size:17px}
  section.blk{padding-top:40px}
  section.blk>h2{font-size:25px}
  h3.sh{font-size:19px}
  .code code{font-size:11.5px}
  .code pre{padding:16px}
  .qcard{padding:18px 20px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}