:root{
  --p:#4f46e5; --p2:#7c3aed; --bg:#f8fafc; --tx:#0f172a; --mut:#64748b;
  --ok:#10b981; --bd:#e2e8f0; --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--tx);background:var(--bg);line-height:1.6}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
a{color:var(--p);text-decoration:none}
h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.15;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3.5vw,2.1rem);text-align:center;letter-spacing:-.01em}
h3{font-size:1.05rem}
.sub{color:var(--mut);max-width:640px}
.center{justify-content:center}

.nav{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--bd);z-index:50}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:1.1rem;color:var(--tx)}
.nav-links{display:flex;gap:14px;align-items:center}
.nav-links a:not(.btn){color:var(--mut);font-size:.95rem}

.hero{padding:72px 0 56px;background:linear-gradient(180deg,#eef2ff 0%,var(--bg) 100%);text-align:center}
.pill{display:inline-block;background:#e0e7ff;color:var(--p);font-weight:600;font-size:.85rem;padding:6px 14px;border-radius:999px;margin-bottom:18px}
.grad{background:linear-gradient(90deg,var(--p),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{margin:16px auto 26px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.cta.center{justify-content:center;margin-top:28px}
.btn{display:inline-block;padding:10px 20px;border-radius:10px;font-weight:600;border:1px solid transparent;cursor:pointer;font-size:.95rem}
.btn-lg{padding:14px 28px;font-size:1.05rem}
.btn-primary{background:var(--p);color:#fff}
.btn-primary:hover{background:#4338ca}
.btn-outline{background:#fff;border-color:var(--bd);color:var(--tx)}
.btn-ghost{color:var(--tx);background:transparent}
.social{display:flex;gap:12px;align-items:center;justify-content:center;margin-top:26px}
.avatars span{display:inline-flex;width:34px;height:34px;background:#e0e7ff;border-radius:50%;align-items:center;justify-content:center;margin-left:-8px;border:2px solid #fff}
.stars{color:#f59e0b;letter-spacing:2px}
.social small{color:var(--mut)}

.hero-card{max-width:420px;margin:40px auto 0;background:#fff;border:1px solid var(--bd);border-radius:var(--r);box-shadow:0 20px 40px -20px rgba(79,70,229,.25);padding:20px;display:flex;gap:18px;text-align:left}
.hc-title{font-weight:700;font-size:.9rem;margin-bottom:10px}
.progress{height:10px;background:#eef2ff;border-radius:99px;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--p),var(--p2))}
.hc-left{flex:1}
.hc-left small{color:var(--mut)}
.hc-badge{font-size:.75rem;background:#d1fae5;color:#065f46;font-weight:700;padding:3px 10px;border-radius:99px;display:inline-block}
.hc-score{font-size:2rem;font-weight:800}
.up{color:var(--ok);font-size:.9rem;margin-left:6px}

.sec{padding:64px 0}
.sec.alt{background:#fff;border-top:1px solid var(--bd);border-bottom:1px solid var(--bd)}
.sec .sub{text-align:center;margin:10px auto 36px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:24px}
.card h3{margin-bottom:8px}
.card p{color:var(--mut);font-size:.95rem}
.ic{font-size:1.7rem;margin-bottom:10px}
.num{width:34px;height:34px;border-radius:10px;background:var(--p);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:12px}

.foot{padding:28px 0;color:var(--mut);font-size:.9rem;border-top:1px solid var(--bd);background:#fff}
.foot .wrap{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* Auth & app pages */
.auth{max-width:420px;margin:48px auto;background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:28px}
.auth h1{font-size:1.4rem;margin-bottom:4px}
.auth .sub{margin-bottom:18px}
label{display:block;font-size:.85rem;font-weight:600;margin:12px 0 4px}
input,select{width:100%;padding:10px 12px;border:1px solid var(--bd);border-radius:10px;font-size:1rem;background:#fff}
.msg{margin:12px 0;padding:10px 14px;border-radius:10px;font-size:.9rem}
.msg-err{background:#fee2e2;color:#991b1b}
.msg-ok{background:#d1fae5;color:#065f46}
.topbar{background:#fff;border-bottom:1px solid var(--bd)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.app{max-width:900px;margin:28px auto;padding:0 20px}
.panel{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:24px;margin-bottom:18px}
.q-opts{display:grid;gap:10px;margin:18px 0}
.opt{padding:14px 16px;border:2px solid var(--bd);border-radius:12px;cursor:pointer;background:#fff}
.opt:hover{border-color:#c7d2fe}
.opt.sel{border-color:var(--p);background:#eef2ff}
.opt.ok{border-color:var(--ok);background:#d1fae5}
.opt.bad{border-color:#ef4444;background:#fee2e2}
.explain{background:#f1f5f9;border-radius:12px;padding:14px 16px;font-size:.95rem;margin-bottom:16px}
.stat{display:flex;gap:14px;flex-wrap:wrap;margin:14px 0}
.stat div{flex:1;min-width:120px;background:#fff;border:1px solid var(--bd);border-radius:12px;padding:14px}
.stat b{font-size:1.5rem}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{padding:9px 10px;border-bottom:1px solid var(--bd);text-align:left}
th{color:var(--mut);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}
@media(max-width:640px){.nav-links a:not(.btn){display:none}.hero{padding:48px 0 40px}.hero-card{flex-direction:column}}