:root{--bg:#07080e;--ink:#f4f7fd;--ink-2:#c7cedd;--muted:#8b93a7;--teal:#22d3ee;--line:rgba(255,255,255,.1);--card:#0e1524;--cta:linear-gradient(135deg,#22d3ee,#3b9fe8)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink-2);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.7;font-size:17.5px}
a{color:var(--teal)}
.top{border-bottom:1px solid var(--line);padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:1040px;margin:0 auto}
.top .brand{color:var(--ink);font-weight:800;text-decoration:none;font-size:18px}.top nav{display:flex;gap:16px;align-items:center;font-size:15px}.top nav a{text-decoration:none;font-weight:700}.top nav a:not(.btn){color:var(--ink);padding:7px 13px;border:1px solid var(--line);border-radius:999px}.top nav a:not(.btn):hover{border-color:var(--teal);color:var(--teal)}.top{position:sticky;top:0;z-index:40;background:rgba(7,8,14,.96);backdrop-filter:blur(12px)}
.btn{display:inline-block;background:var(--cta);color:#04222b!important;font-weight:800;border-radius:999px;padding:10px 18px;text-decoration:none;font-size:15px}
.btn.ghost{background:transparent;color:var(--ink)!important;border:1px solid var(--line)}
article,.wrap{max-width:740px;margin:0 auto;padding:34px 18px 20px}
.crumbs{font-size:13.5px;color:var(--muted);margin-bottom:10px}.crumbs a{color:var(--muted)}
h1{color:var(--ink);font-size:clamp(30px,5vw,44px);line-height:1.15;letter-spacing:-.02em;margin:0 0 12px}
h2{color:var(--ink);font-size:27px;line-height:1.25;margin:44px 0 10px;letter-spacing:-.01em}
h3{color:var(--ink);font-size:20px;margin:28px 0 6px}
.meta{font-size:14px;color:var(--muted);margin-bottom:22px}
.tldr{background:rgba(34,211,238,.07);border:1px solid rgba(34,211,238,.35);border-radius:14px;padding:16px 18px;margin:22px 0}.tldr b{color:var(--ink)}
.note{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:10px;padding:12px 16px;margin:20px 0;font-size:16px}
.warn{border-left-color:#f59e0b}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}th{color:var(--ink);background:rgba(255,255,255,.04)}
ul,ol{padding-left:22px}li{margin:6px 0}
.toc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 20px;margin:24px 0;font-size:15.5px}.toc b{color:var(--ink)}.toc ol{margin:6px 0 0}
.cta{background:var(--card);border:1px solid rgba(34,211,238,.4);border-radius:18px;padding:22px;margin:38px 0;text-align:center}.cta h3{margin:0 0 6px;font-size:24px}.cta p{margin:6px 0 14px}
.cta .row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.faq details{border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:10px 0;background:var(--card)}.faq summary{cursor:pointer;color:var(--ink);font-weight:700}
.src{font-size:14.5px}.src li{margin:4px 0;word-break:break-word}
.cards{display:grid;gap:16px;margin:24px 0}.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;text-decoration:none;color:var(--ink-2)}.card:hover{border-color:var(--teal)}.card h2{margin:0 0 6px;font-size:23px}.card small{color:var(--muted)}
footer{border-top:1px solid var(--line);margin-top:40px;padding:26px 18px;text-align:center;font-size:13.5px;color:var(--muted)}footer a{color:var(--muted)}
#rkBanner{position:fixed;left:16px;bottom:16px;right:16px;max-width:520px;z-index:99998;background:#0d1020;color:#c7cedd;border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:16px 18px;font:14px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;box-shadow:0 12px 40px rgba(0,0,0,.5);display:none}
#rkBanner b{color:#f4f7fd}#rkBanner .row{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
#rkBanner button{cursor:pointer;border-radius:999px;padding:9px 18px;font-weight:700;font-size:14px;border:1px solid rgba(255,255,255,.25);background:transparent;color:#f4f7fd}#rkBanner button.yes{background:var(--cta);border:0;color:#04222b}
@media(max-width:560px){body{font-size:17px}.top{flex-wrap:wrap}.top nav{gap:8px;flex-wrap:wrap}.top nav a:not(.btn){font-size:14px;padding:6px 11px}.top .btn{padding:8px 14px;font-size:14px}}