.logo[data-astro-cid-tvrurpns]{flex-shrink:0;display:block}.logo[data-astro-cid-tvrurpns][data-variant=mono] .fish[data-astro-cid-tvrurpns]{fill:currentColor}.logo[data-astro-cid-tvrurpns][data-variant=mono] .wave[data-astro-cid-tvrurpns]{stroke:currentColor;opacity:.6}.logo[data-astro-cid-tvrurpns][data-variant=mono] .dot[data-astro-cid-tvrurpns]{fill:var(--accent-warm, #c2410c)}.logo[data-astro-cid-tvrurpns][data-variant=solid] .plate[data-astro-cid-tvrurpns]{fill:#f4f8fc}.logo[data-astro-cid-tvrurpns][data-variant=solid] .fish[data-astro-cid-tvrurpns]{fill:#12263f}.logo[data-astro-cid-tvrurpns][data-variant=solid] .wave[data-astro-cid-tvrurpns]{stroke:#0d7490}.logo[data-astro-cid-tvrurpns][data-variant=solid] .dot[data-astro-cid-tvrurpns]{fill:#c2410c}:root{--ink: #16212e;--ink-soft: #45566a;--muted: #7d8b9a;--line: #e4e9ef;--line-soft: #f0f3f7;--bg: #ffffff;--bg-alt: #f7f9fc;--navy: #12263f;--navy-deep: #0b1a2e;--navy-soft: #1e4066;--navy-tint: #2a5580;--accent: #0b6bcb;--accent-soft: #e8f1fb;--accent-warm: #c2410c;--teal: #0d7490;--warn-bg: #fff9e8;--warn-line: #d9a520;--ok: #1a7f52;--radius: 10px;--shadow: 0 1px 2px rgba(22, 33, 46, .06), 0 4px 14px rgba(22, 33, 46, .05);--shadow-lift: 0 2px 4px rgba(22, 33, 46, .07), 0 12px 28px rgba(18, 38, 63, .1);--grad-dark: linear-gradient(135deg, #12263f 0%, #1a3454 45%, #23324f 100%)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Noto Sans SC,Helvetica Neue,sans-serif;font-size:17px;line-height:1.8;text-wrap:pretty}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}a:hover{color:var(--navy-soft)}.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:.6rem 1rem;z-index:100}.skip:focus{left:0}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.site-header{background:var(--grad-dark);color:#fff;position:sticky;top:0;z-index:20;overflow:hidden;box-shadow:inset 0 -1px #ffffff17,0 1px 12px #12263f29}.hdr-deco{color:#fff}.bar{max-width:68rem;margin:0 auto;padding:.75rem 1.25rem;display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap;position:relative;z-index:1}.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:#fff;margin-right:auto}.brand-mark{width:2.25rem;height:2.25rem;border-radius:8px;background:linear-gradient(140deg,#f8fafc,#dbe7f3);color:var(--navy);display:grid;place-items:center;font-weight:800;font-size:1.12rem;flex-shrink:0;box-shadow:0 2px 6px #0003;position:relative}.brand-text{display:flex;flex-direction:column;line-height:1.3}.brand-text strong{font-size:1.02rem;letter-spacing:.01em}.brand-text small{color:#a8c0d8;font-size:.74rem}.mainnav{display:flex;gap:.3rem;flex-wrap:wrap}.mainnav a{color:#d3e2f0;text-decoration:none;font-size:.92rem;padding:.4rem .8rem;border-radius:6px}.mainnav a:hover{background:#ffffff1a;color:#fff}.mainnav a[aria-current=page]{background:#ffffff29;color:#fff}.burger{display:none;cursor:pointer;padding:.5rem}.burger span{display:block;width:22px;height:2px;background:#fff;margin:4px 0;border-radius:2px}@media(max-width:640px){.burger{display:block}.mainnav{flex-basis:100%;flex-direction:column;display:none;padding-bottom:.5rem}.navtoggle:checked~.mainnav{display:flex}.brand-text small{display:none}}main{max-width:46rem;margin:0 auto;padding:2.5rem 1.25rem 4rem}main.wide{max-width:68rem}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));gap:1.1rem}h1{font-size:clamp(1.6rem,4vw,2.1rem);line-height:1.4;letter-spacing:-.01em;margin:0 0 .8rem}h2{font-size:1.28rem;margin:2.8rem 0 1rem;padding-bottom:.5rem;position:relative;border-bottom:1px solid var(--line)}h2:after{content:"";position:absolute;left:0;bottom:-2px;width:2.6rem;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--teal))}h3{padding-left:.7rem;border-left:3px solid var(--accent-soft)}h3{font-size:1.08rem;margin:1.8rem 0 .5rem}p{margin:0 0 1.1rem}.lede{font-size:1.06rem;color:var(--ink-soft)}main ol{padding-left:1.4rem}main ol>li{margin:.7rem 0;padding-left:.2rem}main ul{padding-left:1.3rem}main ul>li{margin:.45rem 0}main img{max-width:100%;height:auto;border-radius:8px;border:1px solid var(--line)}code{background:var(--line-soft);padding:.12em .4em;border-radius:4px;font-size:.89em}blockquote{margin:1.4rem 0;padding:.2rem 0 .2rem 1.1rem;border-left:3px solid var(--line);color:var(--ink-soft)}table{width:100%;border-collapse:collapse;font-size:.93rem;margin:1.4rem 0}th,td{text-align:left;padding:.6rem .7rem;border-bottom:1px solid var(--line)}th{background:var(--bg-alt);font-weight:600}.site-footer{background:var(--grad-dark);color:#c4d6e6;font-size:.9rem;margin-top:4rem;position:relative;overflow:hidden}.foot-deco{color:#fff}.foot-strip{position:relative;z-index:1;background:#00000038;border-bottom:1px solid rgba(255,255,255,.08)}.strip-inner{max-width:68rem;margin:0 auto;padding:.85rem 1.25rem;display:flex;flex-wrap:wrap;gap:1.6rem;justify-content:center}.strip-inner span{display:inline-flex;align-items:center;gap:.4rem;font-size:.82rem;color:#9fbdd8;letter-spacing:.01em}.strip-inner svg{color:var(--accent-warm);opacity:.9}.foot-grid{max-width:68rem;margin:0 auto;padding:2.5rem 1.25rem 1.8rem;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:2rem;position:relative;z-index:1}.foot-logo{display:inline-grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:8px;background:#ffffff14;color:#cfe2f5;margin-bottom:.7rem}.foot-brand strong{color:#fff;display:block;margin-bottom:.5rem;font-size:1rem}.foot-brand p{margin:0;line-height:1.7;color:#9fbdd8}.site-footer nav{display:flex;flex-direction:column;gap:.45rem}.site-footer h3{color:#fff;font-size:.8rem;letter-spacing:.05em;margin:0 0 .6rem;padding-bottom:.4rem;border-bottom:2px solid transparent;border-image:linear-gradient(90deg,var(--accent-warm),transparent 70%) 1}.site-footer nav a{color:#c4d6e6;text-decoration:none}.site-footer nav a:hover{color:#fff;text-decoration:underline}.foot-legal{border-top:1px solid rgba(255,255,255,.13);background:#0000002e;position:relative;z-index:1}.foot-legal>p{max-width:68rem;margin:0 auto;padding:1.3rem 1.25rem 0;font-size:.82rem;line-height:1.7;color:#93aec7}.foot-legal strong{color:#cfe0ee}.foot-legal .copy{padding-bottom:1.8rem;color:#7593b0}@media(max-width:640px){.foot-grid{grid-template-columns:1fr;gap:1.6rem}}