:root{
  --bg:#ffffff;
  --text:#0b0f19;
  --muted:#5b6475;
  --line:#e7e9ef;
  --card:#f7f8fb;
  --accent:#111827;
  --max:1100px;
  --radius:18px;
  --shadow:0 10px 30px rgba(17,24,39,0.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:0 22px}
.nav{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line);z-index:10}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:650;letter-spacing:.2px}
.brand-mark{width:34px;height:34px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center;background:var(--card)}
.brand-mark svg{width:20px;height:20px}
.nav-links{display:flex;gap:18px;align-items:center;font-size:14px;color:var(--muted)}
.nav-links a{padding:10px 10px;border-radius:10px}
.nav-links a:hover{background:var(--card);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:14px;border:1px solid var(--line);background:var(--accent);color:white;font-weight:600;font-size:14px}
.btn:hover{text-decoration:none;filter:brightness(0.98)}
.btn.secondary{background:transparent;color:var(--text)}
.btn.secondary:hover{background:var(--card)}
.hero{padding:78px 0 42px}
.kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.h1{font-size:44px;line-height:1.08;letter-spacing:-.02em;margin:10px 0 14px}
.sub{font-size:18px;line-height:1.55;color:var(--muted);max-width:760px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width: 900px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .h1{font-size:36px}
}
.section{padding:42px 0;border-top:1px solid var(--line)}
.h2{font-size:26px;letter-spacing:-.01em;margin:0 0 10px}
.p{color:var(--muted);line-height:1.7;margin:0 0 10px}
.card{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:18px 18px}
.card h3{margin:0 0 8px;font-size:16px}
.small{font-size:13px;color:var(--muted);line-height:1.6}
.hr{height:1px;background:var(--line);margin:18px 0}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);border:1px solid var(--line);background:white;border-radius:999px;padding:8px 10px}
.footer{padding:40px 0;border-top:1px solid var(--line)}
.footer-grid{display:grid;gap:14px;grid-template-columns:2fr 1fr 1fr}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr}}
.footer a{color:var(--muted)}
.footer a:hover{color:var(--text)}
.caption{font-size:12px;color:var(--muted);margin-top:12px}
/* QPI bar */
.qpi-wrap{margin-top:18px}
.qpi-label{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.qpi-bar{height:14px;border-radius:999px;overflow:hidden;border:1px solid var(--line);background:#f0f2f7;position:relative}
.qpi-seg{height:100%;float:left}
.qpi-seg.a{width:55%;background:#e6e8ef}
.qpi-seg.b{width:20%;background:#dfe3ec}
.qpi-seg.c{width:25%;background:#d7dce7}
.qpi-marker{position:absolute;top:-8px;width:2px;height:30px;background:#111827;left:62%}
.qpi-note{font-size:12px;color:var(--muted);margin-top:10px}
/* Forms */
.form{display:grid;gap:12px;max-width:520px}
.input{width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:white;font-size:14px}
textarea.input{min-height:110px;resize:vertical}
.notice{font-size:12px;color:var(--muted)}