:root{--ink:#171717;--muted:#777;--line:#e8e8e8;--paper:#f7f7f5}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}.shell{width:min(960px,calc(100% - 40px));margin:auto;padding:42px 0 28px}header{display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);padding-bottom:24px}.mark{width:44px;height:44px;display:grid;place-items:center;background:#111;color:white;font-size:25px;font-weight:800}small{color:var(--muted);font-size:10px;font-weight:750;letter-spacing:1.4px}h1{margin:4px 0 0;font-size:18px}.dev{margin-left:auto;border:1px solid var(--line);border-radius:30px;padding:8px 11px;font-size:10px;color:#777}.dev:first-letter{color:#d69b38}.intro{padding:70px 0 42px;max-width:690px}h2{margin:14px 0;font-size:clamp(36px,6vw,58px);line-height:1.08;letter-spacing:-2px}h2 span{color:#888}.intro p{max-width:570px;color:#666;font-size:16px;line-height:1.8}.panel{background:white;border:1px solid var(--line);border-radius:12px;padding:26px}.heading{display:flex;align-items:center;justify-content:space-between;gap:12px}h3{margin:7px 0;font-size:23px}.heading span{border:1px solid var(--line);border-radius:30px;padding:7px 10px;color:#666;font-size:10px;font-weight:700}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.steps div{min-height:95px;border:1px solid var(--line);border-radius:8px;padding:14px;font-size:13px;font-weight:650;line-height:1.5}.steps b{display:block;margin-bottom:12px;color:#999}aside{padding:16px 18px;border-left:3px solid #c69b51;background:#faf8f3}aside p{margin:6px 0 0;color:#666;font-size:13px;line-height:1.65}footer{padding-top:24px;color:#999;font-size:10px;letter-spacing:1.2px}@media(max-width:650px){.shell{width:calc(100% - 28px);padding-top:24px}.dev{display:none}.intro{padding:48px 0 28px}.panel{padding:19px}.steps{grid-template-columns:repeat(2,1fr)}h2{letter-spacing:-1.5px}}
