:root{--bg:#f5f3eb;--paper:#fffef9;--ink:#173b34;--muted:#62736c;--line:#dce2d8;--accent:#de6c3d;--soft:#e8eee4}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:#17664d;text-underline-offset:4px}a:hover{color:#ac4b27}button,input{font:inherit}button,.button{cursor:pointer;border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:9px 17px;border-radius:8px;text-decoration:none;display:inline-block}button:hover,.button:hover{background:var(--soft)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.skip{position:absolute;left:16px;top:-80px;z-index:20}.skip:focus{top:12px;background:white;padding:10px}
.topbar{background:rgba(245,243,235,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.top-inner{max-width:1280px;margin:auto;min-height:72px;padding:12px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{font-weight:800;letter-spacing:.07em;text-decoration:none;color:var(--ink);white-space:nowrap}.brand span{color:var(--accent)}.toplinks{display:flex;gap:22px;font-size:14px}.toplinks a{text-decoration:none}
.home{max-width:1200px;margin:auto;padding:48px 32px}.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:700;color:#7e5839;text-transform:uppercase}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center;padding:12px 0 44px;border-bottom:1px solid var(--line)}.hero h1{font-family:Georgia,"Songti SC","SimSun",serif;font-size:clamp(40px,5vw,64px);line-height:1.2;letter-spacing:.03em;margin:16px 0 22px}.hero h1 em{color:var(--accent);font-style:normal}.hero p{max-width:570px;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.primary{background:var(--ink);border-color:var(--ink);color:white}.primary:hover{background:#245749;color:white}.scene{width:100%;max-height:310px}.route{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:20px;font-size:13px}.route span{border:1px solid var(--line);border-radius:20px;padding:4px 12px}.route b{color:var(--accent)}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:20px;margin:36px 0 18px}.section-title h2{font-size:25px;margin:0;font-weight:700}.section-title p{font-size:14px;color:var(--muted);margin:0}.searchbox{display:block;max-width:600px;margin:28px 0 8px}.searchbox span{display:block;font-weight:600;font-size:14px;margin-bottom:6px}.searchbox input{width:100%;padding:13px 16px;border:1px solid #b8c8bd;border-radius:9px;background:var(--paper);color:var(--ink)}#search-status{color:var(--muted);font-size:13px;min-height:24px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{background:var(--paper);border:1px solid var(--line);padding:24px;border-radius:12px;display:flex;flex-direction:column;transition:transform .15s,border-color .15s;min-width:0}.card:hover{transform:translateY(-3px);border-color:#a2b9a7}.card .tag,.tag{font-size:11px;font-weight:700;letter-spacing:.05em;color:#6d633f}.card h3{font-size:19px;line-height:1.5;margin:12px 0 8px}.card h3 a{text-decoration:none;color:var(--ink)}.card p{color:var(--muted);font-size:14px;margin:0 0 20px}.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;margin-top:auto}.format{background:var(--soft);border-radius:4px;padding:1px 7px;color:#496053;font-size:11px}.note{border-left:3px solid var(--accent);padding:12px 18px;background:#f0ecdf;color:#625c4b;font-size:14px;margin-top:24px}
.layout{max-width:1340px;margin:auto;padding:32px;display:grid;grid-template-columns:238px minmax(0,1fr);gap:36px}.side{position:sticky;top:96px;max-height:calc(100vh - 118px);overflow:auto;align-self:start;font-size:13px;padding-right:12px}.side h2{font-size:12px;color:var(--muted);margin:22px 0 8px;letter-spacing:.06em}.side h2:first-child{margin-top:0}.side a{display:block;padding:7px 10px;text-decoration:none;color:#526b60;border-radius:6px;line-height:1.6}.side a[aria-current=page]{background:#dfe9dc;color:#194535;font-weight:700}.side a:hover{background:var(--soft)}.mobile-nav{display:none}.reader{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:36px 42px}.crumb{font-size:12px;color:var(--muted);margin-bottom:18px}.page-title{font-size:32px;line-height:1.35;letter-spacing:.02em;margin:12px 0}.doc-actions{display:flex;gap:10px;flex-wrap:wrap;font-size:13px;margin:22px 0}.tocbox{border:1px solid var(--line);background:#f7f8f0;border-radius:8px;padding:12px 18px;margin:22px 0}.tocbox summary{cursor:pointer;font-weight:600;font-size:14px}.toc{font-size:14px;max-height:340px;overflow:auto}.toc ul{padding-left:20px}.toc li{margin:5px 0}.markdown{overflow-wrap:anywhere}.markdown h1{font-size:28px;line-height:1.4;margin:36px 0 20px}.markdown h2{font-size:23px;line-height:1.5;margin:40px 0 18px;padding-top:8px;border-bottom:1px solid var(--line);padding-bottom:12px}.markdown h3{font-size:19px;margin:28px 0 12px}.markdown p{margin:16px 0}.markdown ul,.markdown ol{padding-left:25px}.markdown li{margin:7px 0}.markdown blockquote{margin:22px 0;padding:5px 20px;border-left:4px solid #8ca881;background:#f0f4e9;color:#3e5846}.markdown hr{border:0;border-top:1px solid var(--line);margin:30px 0}.markdown code{background:#edf0e8;border-radius:4px;padding:2px 5px;font-size:.88em}.markdown pre{overflow:auto;background:#edf0e8;padding:18px;border-radius:8px}.markdown pre code{padding:0;white-space:pre}.table-wrap{max-width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:8px}.markdown table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.7}.markdown th,.markdown td{border-bottom:1px solid var(--line);padding:11px 13px;text-align:left;min-width:110px;vertical-align:top}.markdown th{background:#eaf0e4;font-weight:650}.markdown tr:last-child td{border-bottom:0}.markdown img{max-width:100%;height:auto}.markdown input[type=checkbox]{margin-right:8px;accent-color:#34604a}.pdf-frame,.handbook-frame{width:100%;height:78vh;min-height:480px;border:1px solid var(--line);border-radius:8px;background:white}.bottom-nav{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px;margin-top:40px;font-size:14px}footer{max-width:1200px;margin:24px auto 0;padding:24px 32px 36px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}[hidden]{display:none!important}
@media(max-width:1000px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.layout{grid-template-columns:200px minmax(0,1fr);gap:20px;padding:24px}.reader{padding:28px}.hero{gap:20px}}
@media(max-width:720px){.top-inner{padding:12px 18px;min-height:64px;gap:12px}.brand{font-size:15px}.toplinks{gap:12px;font-size:12px}.toplinks .extra{display:none}.home{padding:28px 18px}.hero{grid-template-columns:1fr;gap:8px;padding-bottom:28px}.hero h1{font-size:42px}.scene{max-height:170px}.hero p{font-size:15px}.grid{grid-template-columns:1fr}.card{padding:22px}.section-title{display:block}.section-title p{margin-top:6px}.layout{display:block;padding:18px 12px}.side{display:none}.mobile-nav{display:block;margin-bottom:16px;padding:12px 16px;background:var(--soft);border-radius:8px}.mobile-nav summary{cursor:pointer;font-weight:600}.mobile-nav nav{max-height:55vh;overflow:auto;padding:10px 0}.mobile-nav h2{font-size:12px;color:var(--muted)}.mobile-nav a{display:block;padding:7px 0;font-size:14px;text-decoration:none}.reader{padding:24px 18px;border-radius:10px}.page-title{font-size:27px}.markdown{font-size:15px}.markdown h1{font-size:25px}.markdown h2{font-size:21px}.markdown h3{font-size:18px}.pdf-frame,.handbook-frame{min-height:400px;height:70vh}footer{padding:24px 18px}.doc-actions{gap:8px}.doc-actions .button,.doc-actions button{padding:7px 12px}}
@media print{body{background:white;color:black;font-size:11pt}.topbar,.side,.mobile-nav,.tocbox,.doc-actions,footer,.bottom-nav,.skip{display:none}.layout{display:block;padding:0}.reader{border:0;padding:0}.markdown table{font-size:9pt}.table-wrap{overflow:visible}.markdown h2,.markdown h3{break-after:avoid}.markdown tr{break-inside:avoid}a{color:inherit}html{scroll-behavior:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}