:root{--bg:#fff;--soft:#f5f7fb;--ink:#14213d;--mut:#5b6785;--line:#e3e8f2;--brand:#0b6cc0;--brand2:#0f458b;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
img,iframe{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.2;margin:0 0 .6em}h1{font-size:clamp(2rem,5vw,3.1rem)}h2{font-size:1.7rem;margin-top:1.6em}h3{font-size:1.2rem}
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;color:var(--ink);display:flex;align-items:center;gap:8px}.brand:hover{text-decoration:none}
.logo-img{height:40px;width:auto;display:block}.logo{background:var(--brand);color:#fff;border-radius:8px;padding:2px 8px;font:700 .9rem monospace}
.menu{display:flex;gap:6px}.menu a{color:var(--ink);padding:8px 12px;border-radius:8px;font-weight:500}
.menu a:hover,.menu a.on{background:var(--soft);color:var(--brand);text-decoration:none}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:1.3rem;padding:2px 10px;cursor:pointer}
.hero{background:linear-gradient(180deg,var(--soft),#fff);padding:72px 0 56px}
.hero .grid{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center}
.hero p.lead{font-size:1.05rem;color:var(--mut);max-width:600px;margin:0 0 .9em}
.eyebrow{display:inline-block;background:#e0f3f8;color:var(--brand2);font-weight:600;font-size:.85rem;padding:4px 12px;border-radius:99px;margin-bottom:14px}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;border:0;cursor:pointer;font-size:1rem}
.btn:hover{background:var(--brand2);text-decoration:none}.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.ghost:hover{background:var(--soft)}.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}.stat b{display:block;font-size:1.9rem;color:var(--brand)}.stat span{color:var(--mut);font-size:.9rem}
section.s{padding:56px 0}section.alt{background:var(--soft)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:8px;transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(20,33,61,.08)}
.card .ic{font-size:2rem}.card p{color:var(--mut);margin:0;flex:1}.tag{font-size:.8rem;color:var(--brand2);font-weight:600}
.head{max-width:640px;margin-bottom:28px}.head p{color:var(--mut)}
.pagehead{background:var(--soft);padding:48px 0 34px}.pagehead p{color:var(--mut);max-width:640px;margin:0}
.video{position:relative;aspect-ratio:16/9;background:#0e1730;border-radius:var(--r);overflow:hidden;display:flex;align-items:center;justify-content:center;color:#fff;text-align:center}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video .ph{padding:20px;opacity:.85}.video .ph b{display:block;font-size:2rem}
.two{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:start}
.box{background:var(--soft);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.box ul{margin:0;padding-left:20px}.box li{margin:6px 0}
ul.ck{list-style:none;padding:0}ul.ck li{padding-left:28px;position:relative;margin:9px 0}ul.ck li:before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:800}
.article{max-width:760px;margin:0 auto;padding:44px 20px 60px}.article .meta{color:var(--mut);font-size:.9rem;margin-bottom:24px}
.tbl{width:100%;border-collapse:collapse;margin:18px 0}.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}.tbl th{background:var(--soft)}
kbd{background:#fff;border:1px solid #c9d2e3;border-bottom-width:2px;border-radius:6px;padding:1px 7px;font:600 .85em monospace}
code{background:var(--soft);padding:2px 6px;border-radius:5px}
.note{background:#e9f3ff;border-left:4px solid var(--brand);padding:14px 18px;border-radius:8px;margin:22px 0}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:12px 0}
summary{cursor:pointer;font-weight:600}details p{margin:.7em 0 0;color:var(--mut)}
form{display:grid;gap:14px;max-width:560px}label{font-weight:600;font-size:.92rem}
input,textarea,select{width:100%;padding:12px;border:1px solid #c9d2e3;border-radius:10px;font:inherit;background:#fff}
input:focus,textarea:focus,select:focus{outline:2px solid var(--brand);border-color:transparent}
.hp{position:absolute;left:-9999px}
.foot{background:#0c2547;color:#c9d2e8;padding:44px 0 0;margin-top:40px}.foot a{color:#9fc1ff}.foot p{margin:.5em 0}.foot strong{color:#fff}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.fgrid nav a,.fgrid p a{margin-right:10px}
.copy{border-top:1px solid #24304f;margin-top:30px;padding:18px 20px;font-size:.85rem}
.prompt{background:#0c2547;color:#e8f0ff;border-radius:10px;padding:14px 16px;font:.92rem/1.55 ui-monospace,Consolas,monospace;white-space:pre-wrap;margin:14px 0}.mods{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.mods .box h3{font-size:1.05rem}.side{position:sticky;top:84px}
@media(max-width:800px){.side{position:static}
.hero .grid,.two,.fgrid{grid-template-columns:1fr}
.burger{display:block}.menu{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:10px 20px}
.menu.open{display:flex}}