:root{--paper:#f4f1e9;--ink:#1a2235;--muted:#6d706e;--line:#d9d6ce;--orange:#c6532b;--blue:#234c83}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{outline-offset:5px}button{cursor:pointer}header{height:92px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 4%;gap:48px;background:var(--paper);position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:14px;font-family:serif;font-size:24px;font-weight:700;white-space:nowrap}.mark{color:var(--orange);font:42px serif}.brand small{display:block;font:9px/1.8 monospace;letter-spacing:2.5px}nav{display:flex;gap:32px;font-size:14px}nav a:hover,.repo:hover{color:var(--orange)}.repo{margin-left:auto;font-size:13px}#menu{display:none}.shell{max-width:1600px;margin:auto;display:grid;grid-template-columns:240px 1fr}aside{border-right:1px solid var(--line);padding:40px 26px;position:sticky;top:92px;height:calc(100dvh - 92px);overflow:auto}.aside-title{font-size:11px;letter-spacing:2px;color:var(--muted);margin-bottom:26px}.aside-group{font-size:11px;color:var(--muted);margin:28px 0 12px}.side-link{display:flex;gap:12px;padding:11px 0;font-size:13px;line-height:1.5}.side-link b{font:11px monospace;color:#95968e;padding-top:3px}.side-link.active{color:var(--orange)}.side-foot{margin-top:34px;border-top:1px solid var(--line);padding-top:22px;color:var(--muted);font-size:11px;line-height:1.8}main{min-width:0;padding:40px 48px 70px}.eyebrow{font:11px monospace;letter-spacing:2px;color:var(--orange)}.hero{display:grid;grid-template-columns:1fr 1.12fr;gap:35px;align-items:center;margin:12px 0 40px}.hero h1{font-family:Songti SC,SimSun,serif;font-size:clamp(42px,4.6vw,72px);font-weight:500;line-height:1.18;letter-spacing:-2px;margin:20px 0}.hero h1 em{font-style:normal;color:var(--orange)}.hero p{font-size:15px;line-height:1.9;color:var(--muted);max-width:370px}.hero-art{position:relative;background:#17223b;aspect-ratio:1.08;overflow:hidden}.hero-art img{height:100%;width:100%;object-fit:cover}.art-note{font-size:10px;line-height:1.7;color:var(--muted);margin-top:8px}.cta{display:inline-flex;background:var(--ink);color:var(--paper);padding:15px 22px;margin-top:12px;font-size:13px;gap:25px}.intro-line{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:32px;padding:19px 0;margin-bottom:38px;font-size:12px;color:var(--muted)}.intro-line strong{color:var(--ink);font-weight:500}.section-title{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin:32px 0 22px}.section-title h2{font-family:serif;font-weight:500;font-size:27px;margin:0}.section-title a{font-size:12px;color:var(--muted)}.searchrow{display:flex;gap:20px;justify-content:space-between;margin-bottom:25px;align-items:center}.filters{display:flex;gap:8px;flex-wrap:wrap}.filters button{background:none;border:0;padding:8px 12px;color:var(--muted);font-size:12px}.filters button.active{background:var(--ink);color:#fff}.searchrow input{width:250px;border:0;border-bottom:1px solid #a7aaa5;background:transparent;padding:10px 2px;font-size:13px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 23px}.chapter-card{display:block;min-width:0}.visual{height:165px;position:relative;overflow:hidden;background:#e5e0d4}.visual canvas{width:100%;height:100%}.chapter-card .meta{margin-top:15px;font:10px monospace;color:var(--muted);display:flex;gap:10px}.chapter-card h3{font-size:19px;font-family:serif;font-weight:500;margin:10px 0 8px}.chapter-card p{font-size:12px;line-height:1.8;margin:0;color:var(--muted)}.chapter-card:hover h3{color:var(--orange)}.chapter-card:hover canvas{filter:brightness(1.06)}.text-art{padding:26px;background:var(--ink);color:#f4eee2;font:25px/1.6 serif;height:100%}.text-art.orange{background:#bf562f}.text-art.blue{background:#254d75}.pause{margin:48px 0;padding:26px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:35px}.pause h2{font:28px/1.5 serif;margin:0}.pause p{font-size:13px;line-height:1.9;color:var(--muted);margin:0}.pagehead{margin:10px 0 32px}.pagehead h1{font:44px/1.3 serif;margin:18px 0}.pagehead p{font-size:14px;line-height:1.9;color:var(--muted);max-width:650px}.stylegrid{grid-template-columns:repeat(3,minmax(0,1fr))}.stylegrid .visual{height:170px}.stylegrid h3{font-size:18px}.grammar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grammar-grid .visual{height:220px}.article{max-width:760px;margin:0 auto}.breadcrumb{font-size:12px;color:var(--muted);margin:5px 0 32px}.article h1{font:46px/1.3 serif;margin:18px 0}.lead{font-size:16px;line-height:1.9;color:var(--muted);margin-bottom:32px}.article-visual{height:260px;margin-bottom:36px}.article section{margin:36px 0}.article h2{font:25px/1.5 serif}.article p,.article li{font-size:15px;line-height:2}.article p{color:#454c55}.article pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#182337;color:#e9e3d4;padding:22px;font:12px/1.9 monospace}.article code{overflow-wrap:anywhere}.article blockquote{margin:25px 0;border-left:3px solid var(--orange);padding:10px 24px;background:#ebe6da}.article table{border-collapse:collapse;display:block;overflow:auto;font-size:12px;max-width:100%}.article th,.article td{border:1px solid var(--line);padding:10px;min-width:110px}.article a:not(.cta){text-decoration:underline;text-underline-offset:4px}.sourcebox{border-top:1px solid var(--line);padding:24px 0;margin-top:45px;font-size:12px;line-height:1.9;color:var(--muted)}.nextprev{display:flex;justify-content:space-between;gap:20px;margin-top:24px;font-size:13px}.notice{padding:18px 22px;background:#e6e7dd;font-size:13px;line-height:1.9}.empty{padding:60px 0;color:var(--muted)}footer{max-width:1600px;margin:auto;border-top:1px solid var(--line);padding:22px 4%;display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.style-facts{display:grid;gap:14px}.style-facts p{margin:0}.style-facts strong{display:block;font-size:12px;color:var(--orange)}details{margin:30px 0}summary{cursor:pointer;font-size:13px}.rawdoc{border-top:1px solid var(--line);padding-top:20px;margin-top:20px}img{max-width:100%}@media(min-width:1450px){main{padding:55px 65px}}@media(max-width:1100px){header{gap:30px;padding:0 25px}nav{gap:18px}.shell{grid-template-columns:200px 1fr}aside{padding:35px 18px}main{padding:35px 30px}.hero{gap:20px}.hero h1{font-size:48px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){header{height:74px;padding:0 20px;gap:18px}.brand{font-size:21px;gap:8px}.brand small{font-size:8px}.mark{font-size:33px}nav,.repo{display:none}#menu{display:block;margin-left:auto;background:transparent;border:1px solid var(--line);padding:8px 12px;font-size:12px}.shell{display:block}aside{display:none;position:fixed;top:74px;left:0;width:270px;height:calc(100dvh - 74px);background:var(--paper);box-shadow:10px 0 40px #0002;z-index:19}aside.open{display:block}main{padding:28px 21px 45px}.hero{grid-template-columns:1fr;margin-top:0;gap:25px}.hero h1{font-size:51px;margin:17px 0}.hero p{max-width:none;font-size:14px}.hero-art{aspect-ratio:1.5}.intro-line{gap:12px;flex-wrap:wrap;font-size:11px;padding:16px 0}.searchrow{flex-direction:column;align-items:stretch;gap:14px}.searchrow input{width:100%}.grid{gap:26px 16px}.visual{height:115px}.chapter-card h3{font-size:17px;line-height:1.5}.chapter-card p{font-size:11px}.text-art{font-size:19px;padding:18px}.pause{grid-template-columns:1fr;gap:12px;margin:36px 0}.pause h2{font-size:25px}.pagehead h1{font-size:35px}.stylegrid,.grammar-grid{grid-template-columns:1fr 1fr}.stylegrid .visual{height:120px}.grammar-grid .visual{height:135px}.article h1{font-size:35px}.article-visual{height:200px}.article p,.article li{font-size:14px}.article h2{font-size:23px}footer{gap:15px;padding:20px;line-height:1.7}.nextprev{font-size:12px}.section-title h2{font-size:25px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}