:root{--bg:#f4f6f8;--paper:#fff;--ink:#18202a;--muted:#667281;--line:#dce2e8;--accent:#0866ff;--accent2:#00a67e;--dark:#111923;--warn:#fff5d6;--shadow:0 8px 30px rgba(25,39,52,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.68 Inter,system-ui,-apple-system,"Segoe UI",sans-serif}.topbar{height:72px;position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:var(--dark);color:#fff;box-shadow:0 2px 14px #0003}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:750;letter-spacing:.2px}.brand small{display:block;color:#9eacba;font-size:11px;font-weight:500;letter-spacing:.5px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#22c3a6);font-size:13px}.nav-toggle{display:none;border:0;background:#ffffff18;color:#fff;border-radius:8px;font-size:22px;padding:5px 10px}.layout{display:grid;grid-template-columns:260px minmax(0,1fr);max-width:1440px;margin:auto}.sidebar{position:sticky;top:72px;height:calc(100vh - 72px);padding:28px 18px;background:#fff;border-right:1px solid var(--line)}.sidebar nav{display:grid;gap:4px}.sidebar nav a{padding:10px 12px;border-radius:9px;color:#394655;text-decoration:none}.sidebar nav a:hover{background:#edf4ff;color:var(--accent)}.side-note{margin-top:28px;padding:15px;border-radius:12px;background:#eef9f6;color:#326158;font-size:13px}.content{min-width:0;padding:38px 5vw 60px}.content article{max-width:1040px}.breadcrumb{display:flex;gap:8px;color:var(--muted);font-size:13px;margin-bottom:24px}.breadcrumb a{color:var(--accent);text-decoration:none}h1{font-size:clamp(2rem,4vw,3.35rem);line-height:1.08;letter-spacing:-.04em;margin:.2em 0 .55em}h2{font-size:1.75rem;line-height:1.2;margin:2em 0 .55em;padding-top:.2em}h3{font-size:1.2rem;margin:1.7em 0 .35em}p{max-width:82ch}a{color:#075dcc}code{padding:.12em .32em;background:#eef1f4;border-radius:5px;font-size:.92em}pre{overflow:auto;padding:18px 20px;border-radius:12px;background:#101923;color:#eaf2fa;box-shadow:var(--shadow)}pre code{padding:0;background:transparent}.hero{padding:34px;border-radius:22px;background:linear-gradient(125deg,#101923 20%,#153456 65%,#08735d);color:white;box-shadow:var(--shadow)}.hero p{font-size:1.1rem;color:#dbe7f2}.badges{display:flex;flex-wrap:wrap;gap:8px}.badge{padding:5px 10px;border:1px solid #ffffff38;border-radius:99px;background:#ffffff13;font-size:13px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.card{display:block;padding:20px;border:1px solid var(--line);border-radius:15px;background:#fff;color:inherit;text-decoration:none;box-shadow:0 2px 8px #1c304408}.card:hover{border-color:#a8c8ff;box-shadow:var(--shadow);transform:translateY(-1px)}.card strong{display:block;font-size:1.08rem;margin-bottom:5px}.card span{color:var(--muted);font-size:.94rem}.callout{padding:16px 18px;border-left:4px solid var(--accent);border-radius:0 10px 10px 0;background:#edf4ff}.warning{border-left-color:#d89000;background:var(--warn)}table{display:block;width:100%;overflow:auto;border-collapse:collapse;margin:18px 0 28px;background:#fff;border:1px solid var(--line);border-radius:10px}th,td{padding:11px 13px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}th{background:#edf2f6;font-size:.89rem;white-space:nowrap}tr:last-child td{border-bottom:0}td img{display:block;max-width:320px;max-height:520px;margin:auto;border-radius:12px;cursor:zoom-in;box-shadow:0 4px 18px #0002}article>p>img{display:block;max-width:min(100%,620px);max-height:720px;margin:24px auto;border-radius:14px;box-shadow:var(--shadow);cursor:zoom-in}footer{max-width:1040px;margin-top:60px;padding-top:24px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.metric{font-size:2rem;font-weight:800;color:var(--accent)}
@media(max-width:800px){.topbar{height:62px;padding:0 16px}.nav-toggle{display:block}.layout{display:block}.sidebar{display:none;position:fixed;z-index:19;top:62px;left:0;width:280px;height:calc(100vh - 62px);box-shadow:10px 0 30px #0003}.nav-open .sidebar{display:block}.content{padding:24px 18px 50px}.grid{grid-template-columns:1fr}.hero{padding:24px}h1{font-size:2.15rem}table{font-size:14px}td img{max-width:240px}.breadcrumb{display:none}}