:root{--paper: #fbfaf7;--paper-2: #f4f2ed;--surface: #ffffff;--ink: #1c1f23;--ink-2: #4b535a;--ink-3: #868e96;--ink-4: #6b7280;--line: #e6e2da;--line-2: #f0ede6;--brand: #2e6f5e;--brand-2: #3d8b75;--brand-soft: #e9f2ef;--brand-ring: rgba(46, 111, 94, .18);--accent: #b4463c;--accent-soft: #f8ecea;--shadow-sm: 0 1px 2px rgba(28, 31, 35, .04), 0 1px 3px rgba(28, 31, 35, .05);--shadow: 0 2px 6px rgba(28, 31, 35, .05), 0 10px 28px rgba(28, 31, 35, .06);--shadow-lg: 0 10px 40px rgba(28, 31, 35, .12);--r-sm: 8px;--r: 12px;--r-lg: 18px;--r-xl: 26px;--sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;--serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;--mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--maxw: 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16px;border-radius:var(--r-sm);font-size:14px;border:1px solid transparent}.alert-error{background:var(--accent-soft);border-color:var(--alert-error-bd, #eed8d5);color:var(--alert-error-ink, #8f352d)}.alert-ok{background:var(--brand-soft);border-color:var(--alert-ok-bd, #cfe4dd);color:var(--alert-ok-ink, #22604f)}.markdown{font-size:16.5px;line-height:1.85;color:var(--md-ink, #2b3037);word-wrap:break-word}.markdown>*:first-child{margin-top:0}.markdown>*:last-child{margin-bottom:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4{font-family:var(--serif);color:var(--ink);line-height:1.4;margin:2em 0 .8em;scroll-margin-top:90px}.markdown h1{font-size:1.75rem}.markdown h2{font-size:1.42rem;padding-bottom:.4em;border-bottom:1px solid var(--line-2)}.markdown h3{font-size:1.18rem}.markdown h4{font-size:1.02rem}.markdown p{margin:0 0 1.15em}.markdown strong{font-weight:600;color:var(--md-strong, #12161a)}.markdown ul,.markdown ol{margin:0 0 1.15em;padding-left:1.6em}.markdown 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