:root{--bg:#f6f7fb;--card:#fff;--ink:#141826;--mut:#5b6275;--line:#e6e8f0;--pri:#4f46e5;--pri2:#7c3aed;--acc:#10b981;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--pri)}.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
.topbar{background:#0f1222;color:#fff;position:sticky;top:0;z-index:20}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:58px;gap:12px}
.brand{color:#fff;text-decoration:none;font-weight:800;font-size:1.15rem;display:flex;gap:8px;align-items:center;white-space:nowrap}
.mainnav{display:flex;gap:4px;overflow-x:auto}.mainnav a{color:#c9cde0;text-decoration:none;padding:7px 12px;border-radius:999px;font-size:.92rem;white-space:nowrap}
.mainnav a:hover,.mainnav a.active{background:#262b45;color:#fff}
.hero{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;padding:54px 0 64px}
.hero.small{padding:36px 0 40px}.hero h1{margin:0 0 10px;font-size:clamp(1.6rem,4vw,2.5rem);line-height:1.2;max-width:820px}
.hero p{margin:0 0 6px;opacity:.93;max-width:760px}.hero a{color:#fff}
.crumb{font-size:.88rem;opacity:.85}.crumb a{color:inherit}
.searchbox{margin-top:22px;position:relative;max-width:640px}
.searchbox input{width:100%;padding:16px 110px 16px 18px;border-radius:12px;border:0;font-size:1rem;box-shadow:0 10px 30px rgba(0,0,0,.18);outline:none}
#qcount{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--mut);font-size:.85rem}
.chips-wrap{position:sticky;top:58px;z-index:10;background:rgba(246,247,251,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.chips{display:flex;gap:8px;overflow-x:auto;padding:10px 18px;scrollbar-width:thin}
.chip{flex:0 0 auto;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:.88rem;color:var(--ink);text-decoration:none;white-space:nowrap}
.chip b{color:var(--pri);font-weight:700;margin-left:2px}.chip:hover{border-color:var(--pri)}
.promo{display:flex;gap:16px;align-items:center;margin:26px 0 6px;padding:18px 20px;background:#111827;color:#e5e7eb;border-radius:var(--r);text-decoration:none}
.promo span{font-size:2rem}.promo div{flex:1}.promo strong{color:#fff}.promo em{font-style:normal;color:#a5b4fc;font-weight:600;white-space:nowrap}
.cat{margin:34px 0}.cat h2{font-size:1.3rem;margin:0 0 14px;display:flex;align-items:center;gap:8px}
.cat h2 small{background:#eef0ff;color:var(--pri);font-size:.8rem;padding:2px 9px;border-radius:999px}
.grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.card a{display:flex;gap:12px;height:100%;padding:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:.15s}
.card a:hover{border-color:var(--pri);box-shadow:0 8px 24px rgba(79,70,229,.12);transform:translateY(-2px)}
.ava{flex:0 0 40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#e0e7ff,#ede9fe);color:var(--pri);display:grid;place-items:center;font-weight:800}
.cbody{display:flex;flex-direction:column;min-width:0}.ctitle{font-weight:700;line-height:1.3}
.chost{font-size:.78rem;color:var(--acc);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cdesc{font-size:.88rem;color:var(--mut);margin-top:4px;line-height:1.45}
.empty{text-align:center;color:var(--mut);padding:40px 0}
.notice{background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:12px;padding:12px 16px;margin:22px 0;font-size:.94rem}
.agrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:10px 0 40px}
.acard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;text-decoration:none;color:var(--ink);transition:.15s}
.acard:hover{border-color:var(--pri);box-shadow:0 10px 28px rgba(79,70,229,.13)}.acard.alt{background:#f5f3ff}
.aemo{font-size:1.8rem}.acard h3{margin:8px 0 6px;font-size:1.1rem;line-height:1.3}.acard p{margin:0 0 12px;color:var(--mut);font-size:.92rem;flex:1}
.acard em{font-style:normal;color:var(--pri);font-weight:600}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;padding-top:26px;padding-bottom:40px}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px clamp(18px,4vw,44px)}
.article .crumb{color:var(--mut)}.article h1{font-size:clamp(1.5rem,3.5vw,2.1rem);line-height:1.2;margin:6px 0}
.article .meta{color:var(--mut);font-size:.88rem;margin-top:0}.article h2{margin-top:30px;font-size:1.35rem}
.article .lead{font-size:1.1rem;color:#333a4f}
.article table{border-collapse:collapse;width:100%;margin:12px 0}.article th,.article td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.article th{background:#f3f4f8}.callout{background:#eef2ff;border-left:4px solid var(--pri);padding:14px 16px;border-radius:8px;margin:20px 0}
.glossary dt{font-weight:700;margin-top:14px}.glossary dd{margin:2px 0 0;color:#333a4f}
.side{position:sticky;top:76px;align-self:start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px}
.side h3{margin:0 0 8px;font-size:1rem}.side ul{padding-left:0;list-style:none;margin:0 0 14px}.side li{margin:8px 0;font-size:.92rem}
.btn{display:inline-block;background:var(--pri);color:#fff;padding:9px 16px;border-radius:10px;text-decoration:none;font-weight:600}
.footer{background:#0f1222;color:#aab0c6;padding:28px 0;margin-top:40px;font-size:.88rem}.footer a{color:#c7d2fe}
.rg{display:flex;gap:14px;align-items:flex-start}.badge18{flex:0 0 auto;background:#dc2626;color:#fff;font-weight:800;border-radius:50%;width:44px;height:44px;display:grid;place-items:center}
.small{font-size:.8rem;opacity:.8;margin-top:16px}
[hidden]{display:none!important}
@media(max-width:860px){.article-wrap{grid-template-columns:1fr}.side{position:static}}
@media(max-width:560px){.hero{padding:34px 0 40px}.promo{flex-direction:column;align-items:flex-start}.grid{grid-template-columns:1fr}.brand{font-size:1rem}.mainnav a{padding:6px 9px;font-size:.85rem}}