:root{color-scheme:light;--ink:#182333;--muted:#65738a;--line:#e5eaf1;--blue:#0765ed;--soft:#f7f9fc;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:white;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,.table-scroll:focus-visible{outline:3px solid #75a8ff;outline-offset:4px}p{line-height:1.85;color:var(--muted)}.skip{position:fixed;top:-60px;left:20px;background:white;padding:12px;z-index:9}.skip:focus{top:8px}header,footer{display:flex;align-items:center;justify-content:space-between;max-width:1240px;margin:auto;padding:30px 48px}header nav{display:flex;gap:32px;font-size:14px;color:var(--muted)}.brand{font-size:24px;font-weight:780;letter-spacing:-1px;display:flex;gap:12px;align-items:center}.brand i{display:inline-block;background:var(--blue);width:12px;height:27px;border-radius:4px;transform:skewY(-20deg);box-shadow:10px 3px 0 #75a8ff;margin-right:8px}
.home main{max-width:1240px;margin:auto;padding:0 48px}.hero{padding:88px 0 84px;position:relative;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;letter-spacing:2.2px;font-weight:650;color:var(--blue)}h1{font-size:60px;line-height:1.2;letter-spacing:-2px;font-weight:650;margin:24px 0}h2{font-weight:650}.hero>p{font-size:18px;margin:24px 0 32px}.actions{display:flex;align-items:center;gap:26px;font-size:14px}.primary{color:white;background:var(--blue);display:flex;gap:36px;align-items:center;padding:16px 22px;border-radius:8px;font-weight:600}.stage{margin-top:30px;color:var(--muted);font-size:12px;display:flex;align-items:center;gap:8px}.stage>span{background:#238762;width:6px;height:6px;border-radius:50%}.overview,.journey{padding:56px 0}.section-heading h2{font-size:26px;letter-spacing:-.7px;margin:0 0 12px}.section-heading p{font-size:14px;margin:0 0 28px}.surfaces{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.surfaces article{padding:26px;border:1px solid var(--line);border-radius:12px;background:white}.surfaces h2{font-size:18px;margin:24px 0 12px}.surfaces p{font-size:14px;margin:0}.count{font-size:28px;font-weight:600;color:var(--blue)}.count small{font-size:12px;color:var(--muted);font-weight:400}.journey{border-top:1px solid var(--line)}ol{padding:0;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}ol li{font-size:16px;font-weight:600;padding-top:8px}ol strong{display:block;font-size:12px;color:var(--blue);margin-bottom:16px}ol span{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:12px}.note{background:var(--soft);border-radius:12px;padding:24px 28px;margin-bottom:64px}.note strong{font-size:14px}.note p{font-size:13px;margin:10px 0 0}footer{font-size:12px;color:var(--muted);border-top:1px solid var(--line)}
.toc{position:fixed;top:0;bottom:0;left:0;width:252px;background:var(--soft);border-right:1px solid var(--line);padding:30px 22px;overflow-y:auto;font-size:12px}.toc strong{display:block;margin:22px 0 16px;font-size:14px}.toc a{display:block;line-height:1.6;padding:7px 8px;border-radius:6px;color:var(--muted)}.toc a:hover{background:#e9eff9;color:var(--blue)}.toc .back{color:var(--blue)}.document{margin:0 auto 0 252px;padding:48px clamp(24px,4vw,72px);max-width:1500px;font-size:14px;overflow-wrap:anywhere}.document-meta{font-size:12px;color:var(--muted)}.document h1{font-size:32px;letter-spacing:-.8px;line-height:1.4;max-width:800px;margin:24px 0 36px}.document h2{font-size:25px;margin:56px 0 24px;padding-top:16px;border-top:1px solid var(--line);scroll-margin-top:20px}.document h3{font-size:21px;margin:32px 0 20px}.document h4{font-size:16px;margin:30px 0 14px}.document p{color:var(--ink);line-height:1.8}.document a{color:var(--blue)}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:8px;margin:16px 0 24px}table{width:100%;border-collapse:collapse;min-width:650px;font-size:12px;line-height:1.75}th,td{vertical-align:top;text-align:left;border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 14px;min-width:110px}th{background:var(--soft);font-weight:600}td p,th p{margin:0;white-space:pre-line}td:last-child,th:last-child{border-right:0}tr:last-child td{border-bottom:0}td:first-child{min-width:140px}th p{color:var(--muted)!important}
@media(max-width:820px){header,footer{padding:22px 24px}.home main{padding:0 24px}header nav{gap:16px;font-size:12px}.brand{font-size:21px}.hero{padding:56px 0}h1{font-size:43px}.hero>p{font-size:16px}.surfaces{grid-template-columns:1fr 1fr}ol{grid-template-columns:1fr 1fr;gap:28px}.actions{gap:16px;flex-wrap:wrap}.toc{position:relative;width:auto;max-height:190px;border-right:0;border-bottom:1px solid var(--line);padding:16px 24px}.toc strong{margin:8px}.toc a:not(.back){display:inline-block;margin:0 8px 3px 0}.document{margin:0;padding:30px 20px}.document h1{font-size:27px}.document h2{font-size:22px}.table-scroll{max-width:100%}}
@media(max-width:480px){.surfaces{grid-template-columns:1fr}.section-heading h2{font-size:23px}header nav a:last-child{display:none}.hero{padding-top:44px}h1{font-size:39px;letter-spacing:-1px}.surfaces article{padding:22px}.surfaces h2{margin-top:15px}.note{padding:22px}.eyebrow{font-size:10px}}