:root{--bg:#f3f5f8;--surface:#fff;--ink:#1c2430;--muted:#5d6b7d;--line:#d9dfe7;--brand:#1f4e8c;--brand-d:#173c6c;--danger:#b3261e;--ok:#e7f4ec;--ok-ink:#17603a;--bad:#fbeae9}
@media (prefers-color-scheme:dark){:root{--bg:#10151c;--surface:#171e28;--ink:#e6ebf2;--muted:#9aa8ba;--line:#2a3442;--brand:#5b95dc;--brand-d:#79aaea;--danger:#ff8a80;--ok:#12301f;--ok-ink:#7fd6a3;--bad:#3a1a18}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 "IBM Plex Sans",system-ui,sans-serif}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
.top{background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px;flex-wrap:wrap}
.brand{font-weight:600;font-size:1.05rem}.sub{color:var(--muted);font-size:.9rem}
.intro{padding:36px 0 18px}.intro h1{margin:0 0 6px;font-size:2rem;font-weight:600;letter-spacing:-.01em}.intro p{margin:0;color:var(--muted)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-bottom:22px}
.stats div{padding:16px 18px;border-left:1px solid var(--line)}.stats div:first-child{border-left:0}
.stats strong{display:block;font-size:1.9rem;font-weight:600;line-height:1.1;color:var(--brand);font-variant-numeric:tabular-nums}
.stats span{color:var(--muted);font-size:.9rem}
.ok,.bad{padding:14px 16px;border-radius:8px;margin-bottom:18px}
.ok{background:var(--ok);color:var(--ok-ink)}.bad{background:var(--bad);color:var(--danger)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:26px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}.full{grid-column:1/-1}
label{display:block;font-weight:500;font-size:.92rem;margin-bottom:6px}
input,select,textarea{width:100%;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:10px 12px}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus,.btn:focus-visible{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.err{display:block;color:var(--danger);font-size:.85rem;margin-top:4px}
.btn{margin-top:22px;background:var(--brand);color:#fff;border:0;border-radius:7px;padding:12px 26px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--brand-d)}
.hp{position:absolute;left:-9999px}
.foot{color:var(--muted);font-size:.85rem;padding:26px 20px 40px}
@media (max-width:640px){.grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.stats div:nth-child(3){border-left:0}.stats div:nth-child(n+3){border-top:1px solid var(--line)}.intro h1{font-size:1.6rem}}