:root{--ink:#26374d;--muted:#69778a;--line:#e3e8ee;--bg:#f5f7fa;--teal:#227d7a;--coral:#df735c;--shadow:0 12px 35px #26374d08;--radius:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic",sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer;color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px}button{border:1px solid var(--line);background:white}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.25;letter-spacing:-.04em}.topbar{max-width:1200px;margin:24px auto 32px;padding:13px 23px;display:flex;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:60px;box-shadow:var(--shadow);gap:20px}.brand{font-size:24px;letter-spacing:-1px;font-weight:850;display:flex;align-items:center;white-space:nowrap}.brand>span:not(.brand-mark){font-weight:450}.brand i{background:var(--coral);width:6px;height:6px;border-radius:50%;align-self:flex-end;margin:0 0 11px 4px}.brand-mark{display:inline-grid;place-items:center;background:var(--teal);color:white;width:30px;height:30px;border-radius:9px;margin-right:10px;font-size:24px}.topbar nav{display:flex;gap:6px}.topbar nav a{padding:8px 17px;font-size:14px;font-weight:650;border-radius:30px}.topbar nav a.active{background:var(--ink);color:white;box-shadow:0 5px 12px #26374d25}.library-link{font-size:14px;font-weight:700}.library-link span{margin-left:12px}.shell{max-width:1200px;margin:auto;display:grid;grid-template-columns:218px minmax(0,1fr);gap:36px;padding-bottom:80px}.sidebar{align-self:start;background:#fff;border:1px solid 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p{font-size:12px;color:var(--muted)}.note-icon{display:grid;place-items:center;width:28px;height:28px;background:#edf5f3;border-radius:50%;color:var(--teal)}main{min-width:0}.hero{padding:42px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(115deg,#fffaf3,#f1f7f5);position:relative;overflow:hidden;min-height:294px}.hero h1{font-size:66px;letter-spacing:-.055em;margin:16px 0 18px;font-weight:850}.hero p:not(.eyebrow){color:#576579;max-width:460px}.hero .eyebrow{color:var(--teal)}.hero-home{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;align-items:center}.hero-home h1{font-size:68px}.hero-home p:not(.eyebrow){font-size:15px}.hero-stack{transform:rotate(5deg);margin:0 2px 0 12px;display:grid;gap:10px}.stack-card{padding:17px 20px;background:#ffffffd9;border:1px solid #fff;border-radius:12px;box-shadow:0 12px 30px 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12px;border-radius:20px;font-size:12px;background:transparent}.section{margin-top:38px}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:18px;gap:12px}.section-head .eyebrow{font-size:11px;color:var(--teal);margin-bottom:7px}.section-head h2{font-size:25px}.section-head>a{font-size:13px;color:var(--muted);white-space:nowrap}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{padding:0;text-align:left;display:flex;flex-direction:column;overflow:hidden;background:white;border:1px solid var(--line);border-radius:12px;box-shadow:0 7px 20px #26374d03;transition:transform .18s,box-shadow .18s;min-width:0}.card:hover{transform:translateY(-4px);box-shadow:0 12px 24px 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0}dialog .detail-summary{color:var(--muted);margin:20px 0}dialog .detail-content{white-space:pre-line;padding:20px;background:var(--bg);border-radius:12px;font-size:15px}.primary-link{display:inline-block;border:0;background:var(--teal);color:white;border-radius:9px;padding:11px 18px;margin-top:22px;font-size:14px}.detail-note{font-size:12px;color:var(--muted);margin-top:12px}.skip{position:absolute;left:10px;top:-80px;z-index:9;background:#fff;padding:12px}.skip:focus{top:10px}@media(min-width:1600px){.shell,.topbar{max-width:1260px}.shell{gap:44px}}@media(max-width:1248px){.shell{margin:0 24px}.topbar{margin:20px 24px 30px}.shell{gap:25px;grid-template-columns:195px minmax(0,1fr)}.hero{padding:32px}.hero-home h1{font-size:58px}.hero-stack{margin:0}.stack-card{padding:12px}.cards{gap:12px}.card-body{padding:14px}}@media(max-width:920px){.sidebar{display:none}.shell{grid-template-columns:1fr}.topbar nav a{padding:8px 10px}.topbar 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.hero-home h1{font-size:48px;word-break:keep-all;line-height:1.18}.hero-home{grid-template-columns:1.25fr 1fr}.hero-home>div{min-width:0}.hero-home .hero-stack{min-width:0}.thumb strong{overflow-wrap:anywhere}@media(max-width:920px){.topbar .library-link{display:block;font-size:12px}}@media(max-width:600px){.hero-home{grid-template-columns:1fr}.hero-home h1{font-size:36px}.topbar nav{order:3}.topbar .library-link{margin-left:auto}.hero h1{word-break:keep-all}}

/* Cards are direct document links. */
a.card {text-decoration:none;color:inherit;display:block;}
a.card:focus-visible {outline:3px solid #228c8c;outline-offset:4px;}