:root{color-scheme:dark;--bg:#071017;--panel:#0d1821;--panel2:#111f2a;--ink:#e8f1f5;--muted:#9db0bb;--line:#263945;--signal:#a9e85a;--cyan:#5ed9e8;--amber:#ffc76a;--danger:#ff8c93;--sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans CJK SC","Microsoft YaHei",Arial,sans-serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:5rem}body{margin:0;background:radial-gradient(circle at 82% 4%,rgba(94,217,232,.09),transparent 28rem),var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.72}a{color:var(--cyan);text-underline-offset:.2em}a:hover{color:#baf4fb}.skip{position:absolute;left:-9999px;top:.5rem;background:var(--signal);color:#071017;padding:.7rem 1rem;z-index:20}.skip:focus{left:.5rem}header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--line);background:rgba(7,16,23,.92);backdrop-filter:blur(12px)}.nav{max-width:1120px;margin:auto;padding:.72rem 1.1rem;display:flex;align-items:center;gap:1rem;justify-content:space-between}.brand{font-weight:800;color:var(--ink);text-decoration:none}.navlinks{display:flex;gap:.9rem;align-items:center;flex-wrap:wrap}.navlinks a{text-decoration:none;font-size:.93rem}.langlink{border:1px solid var(--line);border-radius:999px;padding:.26rem .7rem}main{max-width:1120px;margin:auto;padding:3.3rem 1.1rem 5rem}.hero{max-width:930px;padding:2.2rem 0 2.8rem}.kicker{color:var(--signal);font-family:var(--mono);font-size:.82rem;letter-spacing:.12em;text-transform:uppercase}.hero h1{font-size:clamp(2.1rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.045em;margin:.55rem 0 1.1rem}.lede{font-size:clamp(1.05rem,2.3vw,1.35rem);color:var(--muted);max-width:52rem}.actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.5rem}.button{display:inline-block;border-radius:.55rem;padding:.65rem .9rem;text-decoration:none;font-weight:750;border:1px solid var(--line);background:var(--panel)}.button.primary{background:var(--signal);color:#071017;border-color:var(--signal)}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:1rem}.grid>*,.step>div{min-width:0}.card{grid-column:span 4;background:linear-gradient(145deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:.85rem;padding:1.15rem}.card h3{margin:.2rem 0 .45rem}.card p{margin:.2rem 0;color:var(--muted)}.wide{grid-column:span 6}.full{grid-column:1/-1}section{margin-top:3.8rem}h2{font-size:clamp(1.55rem,3vw,2.35rem);margin:0 0 .75rem}h3{line-height:1.3}.section-lede{color:var(--muted);max-width:52rem}.step{display:grid;grid-template-columns:3rem 1fr;gap:.8rem;margin:1.2rem 0}.num{width:2.2rem;height:2.2rem;border:1px solid var(--cyan);color:var(--cyan);border-radius:50%;display:grid;place-items:center;font-family:var(--mono);font-weight:800}.step h3{margin:.1rem 0 .35rem}.step p{margin:.25rem 0;color:var(--muted)}.callout{border-left:.25rem solid var(--amber);background:rgba(255,199,106,.08);padding:1rem 1.1rem;border-radius:.35rem;margin:1rem 0}.callout.danger{border-color:var(--danger);background:rgba(255,140,147,.08)}.callout.good{border-color:var(--signal);background:rgba(169,232,90,.07)}pre{position:relative;max-width:100%;overflow:auto;background:#040a0e;border:1px solid var(--line);border-radius:.65rem;padding:1rem;font:.9rem/1.55 var(--mono);tab-size:2}code{font-family:var(--mono)}:not(pre)>code{background:rgba(94,217,232,.1);padding:.12em .32em;border-radius:.3em;color:#d5f8fb}.copy{position:absolute;right:.45rem;top:.45rem;background:var(--panel2);border:1px solid var(--line);border-radius:.35rem;color:var(--muted);padding:.25rem .48rem;cursor:pointer}.copy:focus-visible,.button:focus-visible,a:focus-visible{outline:3px solid var(--amber);outline-offset:3px}table{width:100%;max-width:100%;border-collapse:collapse;display:block;overflow:auto}th,td{text-align:left;padding:.65rem;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--cyan)}.badge{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:.1rem .52rem;font:.78rem var(--mono);color:var(--muted)}.badge.contested{border-color:var(--amber);color:var(--amber)}.flow{font-family:var(--mono);white-space:pre-wrap;background:#040a0e;border:1px solid var(--line);border-radius:.65rem;padding:1rem;color:#cbdbe2}.sources li{margin:.55rem 0}.muted{color:var(--muted)}footer{max-width:1120px;margin:auto;padding:1.5rem 1.1rem 3rem;color:var(--muted);border-top:1px solid var(--line)}@media(max-width:760px){.nav{align-items:flex-start}.navlinks{justify-content:flex-end}.navlinks .optional{display:none}.card,.wide{grid-column:1/-1}main{padding-top:2rem}.hero h1{font-size:2.55rem}pre{font-size:.8rem}.step{grid-template-columns:2.5rem 1fr}}