:root{color-scheme:dark;--bg:#080b10;--panel:#11161d;--line:#28303b;--text:#f1f5f9;--muted:#9aa7b7;--quiet:#69778a;--accent:#f7931a;--radius:12px}
*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text);font:15px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}
header{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 1040px)/2));border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em}.brand span{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--accent);color:#111;font-weight:900}nav{display:flex;gap:24px;color:var(--muted);font-size:13px;font-weight:650}nav a:hover,footer a:hover{color:var(--accent)}
main{width:min(1040px,calc(100% - 40px));margin:0 auto;padding:72px 0 88px}.intro{max-width:760px}.kicker{margin:0 0 10px;color:var(--accent);font:700 11px/1.2 ui-monospace,"SFMono-Regular",Consolas,monospace;letter-spacing:.12em;text-transform:uppercase}.intro h1{margin:0;font-size:clamp(38px,6vw,64px);line-height:1.03;letter-spacing:-.05em}.intro>p:last-child{max-width:690px;margin:20px 0 0;color:var(--muted);font-size:16px}
.tool-group{margin-top:68px}.group-heading{display:grid;grid-template-columns:.8fr 1.2fr;align-items:end;gap:40px;margin-bottom:18px}.group-heading h2,.principle h2{margin:0;font-size:23px;letter-spacing:-.025em}.group-heading p{margin:0;color:var(--muted);font-size:13px}.tool-list{border-top:1px solid var(--line)}.tool-list a{display:grid;grid-template-columns:180px 1fr auto;align-items:center;gap:24px;min-height:82px;border-bottom:1px solid var(--line)}.tool-list strong{font-size:15px}.tool-list span{color:var(--muted);font-size:13px}.tool-list b{color:var(--accent);font-size:12px}.tool-list a:hover strong{color:var(--accent)}
.principle{margin-top:68px;padding:24px;border-radius:var(--radius);background:var(--panel)}.principle dl{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:20px 0 0}.principle dl div{padding-left:16px;border-left:1px solid var(--line)}.principle dt{color:var(--quiet);font-size:11px;font-weight:750}.principle dd{margin:6px 0 0;color:var(--muted);font-size:13px}
footer{width:min(1040px,calc(100% - 40px));margin:0 auto;padding:24px 0 40px;border-top:1px solid var(--line);color:var(--quiet);font-size:12px}footer a{float:right;color:var(--muted)}
@media(max-width:720px){header{padding:0 20px}nav a:first-child{display:none}main{padding:48px 0 64px}.group-heading{display:block}.group-heading p{margin-top:6px}.tool-list a{grid-template-columns:1fr auto;gap:4px 14px;padding:15px 0}.tool-list span{grid-column:1/-1}.tool-list b{grid-column:2;grid-row:1}.principle dl{grid-template-columns:1fr}.principle dl div{padding:0;border:0}.principle{padding:20px}footer a{float:none;display:block;margin-top:8px}}
@media(prefers-reduced-motion:no-preference){a{transition:color .15s ease}}