.page{max-width:1280px;margin:0 auto;padding:0 28px}.doc{display:grid;grid-template-columns:minmax(0,1fr) 232px;gap:48px;padding:20px 0 72px;align-items:start}.crumb{font-size:13px;color:var(--soft);margin-bottom:10px}.lhead{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:18px}.lhead h1{font-size:32px;font-weight:900;margin:0;letter-spacing:-.5px}.lhead .tags{display:flex;gap:8px;flex-wrap:wrap}.main{min-width:0}.toc{position:sticky;top:84px;font-size:13.5px}.toc .t-h{font-size:12px;font-weight:800;color:var(--soft2);letter-spacing:.06em;margin-bottom:12px}.toc a{display:block;color:var(--soft);padding:6px 12px;border-left:2px solid var(--line);line-height:1.4}.toc a:hover{color:var(--orange);border-left-color:var(--orange)}.prose{max-width:840px}.codeblock{--code-bg:#0F1421;--code-bg2:#161C2D;--code-line:#222B40;--code-ink:#E5E9F0;--code-dim:#5A6B86;--code-kw:#FFB454;--code-cmt:#6B7A94;--code-str:#9ECE6A;margin:22px 0;border-radius:12px;overflow:hidden;background:var(--code-bg);border:1px solid var(--code-line);box-shadow:0 6px 22px #0f14212e;font-family:var(--mono)}.codeblock .cb-head{display:flex;align-items:center;gap:8px;padding:11px 14px;background:var(--code-bg2);border-bottom:1px solid var(--code-line)}.codeblock .cb-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0}.codeblock .cb-dot:nth-child(1){background:#ff5f56}.codeblock .cb-dot:nth-child(2){background:#ffbd2e}.codeblock .cb-dot:nth-child(3){background:#27c93f}.codeblock .cb-lang{margin-left:8px;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--code-dim)}.codeblock .cb-copy{margin-left:auto;font-family:var(--sans);font-size:12.5px;font-weight:600;color:var(--code-dim);background:transparent;border:1px solid var(--code-line);border-radius:7px;padding:4px 12px;cursor:pointer;transition:.15s}.codeblock .cb-copy:hover{color:#1a1206;background:var(--code-kw);border-color:var(--code-kw)}.codeblock pre{margin:0;padding:16px 0;overflow-x:auto;background:transparent}.codeblock code{display:block;font-size:14.5px;line-height:1.85;color:var(--code-ink)}.codeblock .cl-line{display:grid;grid-template-columns:48px 1fr;column-gap:18px;padding:0 18px 0 0;white-space:pre}.codeblock .cl-code{white-space:pre;min-width:0}.codeblock .cl-no{text-align:right;color:var(--code-dim);user-select:none;padding-right:14px;border-right:1px solid var(--code-line)}.codeblock .cl-hl{background:linear-gradient(90deg,rgba(255,180,84,.1),transparent 70%)}.codeblock .cl-hl .cl-no{color:var(--code-kw)}.codeblock .cl-kw{color:var(--code-kw);font-weight:600}.codeblock .cl-cmt{color:var(--code-cmt);font-style:italic}.codeblock .cl-str{color:var(--code-str)}.codeblock pre::-webkit-scrollbar{height:8px}.codeblock pre::-webkit-scrollbar-thumb{background:var(--code-line);border-radius:8px}.prose h2{font-size:23px;font-weight:800;margin:42px 0 16px;padding-left:13px;border-left:4px solid var(--orange);line-height:1.3;scroll-margin-top:80px}.prose p{color:var(--ink);font-size:16px;line-height:1.9;margin:14px 0}.prose .ex-box{margin:18px 0;padding:16px 18px;background:var(--card-top);border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:10px;font-family:var(--mono);font-size:14.5px;line-height:1.9}.prose .ex-box b{color:var(--ink)}.prose .ex-box div{padding:2px 0}.prose ul{margin:14px 0;padding-left:4px}.prose ul li{list-style:none;position:relative;padding-left:22px;margin:9px 0;font-size:15px;line-height:1.7}.prose ul li:before{content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;background:var(--orange)}.prose .art-foot{margin-top:34px;padding:18px 20px;background:var(--card-top);border:1px dashed var(--line);border-radius:12px;font-size:14.5px;color:var(--soft)}.goal{margin:0 0 20px;padding:14px 18px;background:#f973160f;border:1px solid rgba(249,115,22,.25);border-radius:12px;font-size:14.5px;line-height:1.85;color:var(--ink)}.goal .gt{font-weight:800;color:#ea6a1f;margin-right:4px}.goal b{color:#ea6a1f}.nextrow{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;align-items:stretch}.nextrow .coach{flex:1 1 260px;text-align:left;background:linear-gradient(135deg,var(--orange),var(--orange-d));color:#1a1206;border:none;border-radius:12px;padding:14px 18px;font-weight:800;font-size:14.5px;cursor:pointer;line-height:1.4}.nextrow .coach:hover{filter:brightness(1.04)}.nextrow .np{flex:1 1 220px;display:flex;flex-direction:column;justify-content:center;gap:3px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;text-decoration:none;transition:.15s}.nextrow .np:hover{border-color:var(--orange);transform:translateY(-2px)}.nextrow .np .k{font-size:12px;color:var(--soft2)}.nextrow .np .v{font-size:15px;font-weight:800;color:var(--ink)}.nextrow .back{flex:0 0 auto;display:flex;align-items:center;color:var(--soft);font-size:13.5px;text-decoration:none;padding:0 10px}.nextrow .back:hover{color:var(--orange)}@media(max-width:980px){.doc{grid-template-columns:1fr;gap:0}.toc{display:none}.prose{max-width:none}.page{padding:0 18px}.lhead h1{font-size:26px}}