:root{--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-primary-light:#eff6ff;--color-secondary:#0891b2;--color-success:#16a34a;--color-warning:#d97706;--color-danger:#dc2626;--color-text:#0f172a;--color-text-muted:#64748b;--color-border:#e2e8f0;--color-bg:#fff;--color-bg-soft:#f8fafc;--color-bg-accent:#f1f5f9;--shadow-sm:0 1px 2px #0f172a0f;--shadow-md:0 4px 12px #0f172a14;--shadow-lg:0 12px 32px #0f172a1f;--radius-sm:6px;--radius:12px;--radius-lg:16px;--container:1120px;--header-height:64px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-8:3rem;--space-10:4.5rem}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6}h1,h2,h3,h4{margin:0 0 var(--space-3);letter-spacing:-.01em;line-height:1.25}h1{font-size:clamp(2rem,5vw,3rem);font-weight:800}h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700}h3{font-size:1.2rem}h3,h4{font-weight:650}h4{font-size:1rem}p{margin:0 0 var(--space-4)}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}.container{width:100%;max-width:var(--container);padding:0 var(--space-5);margin:0 auto}.muted{color:var(--color-text-muted)}.small{font-size:.875rem}.center{text-align:center}.section{padding:var(--space-8) 0}.section-alt{background:var(--color-bg-soft)}.section-head{margin-bottom:var(--space-6)}.section-head p{color:var(--color-text-muted);max-width:640px}.btn{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:1px solid #0000;padding:.65rem 1.25rem;font-size:.95rem;font-weight:600;transition:background .15s,transform 50ms,box-shadow .15s;display:inline-flex;text-decoration:none!important}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover{background:var(--color-bg-accent)}.btn-ghost{color:var(--color-primary);background:0 0}.btn-ghost:hover{background:var(--color-primary-light)}.btn-danger{background:var(--color-danger);color:#fff}.btn-lg{padding:.8rem 1.6rem;font-size:1.05rem}.btn-sm{padding:.4rem .85rem;font-size:.85rem}.btn-block{width:100%}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--space-5)}.card-hover:hover{box-shadow:var(--shadow-md)}.grid{gap:var(--space-5);display:grid}.grid-3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.grid-4{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.badge{border-radius:999px;padding:.15rem .6rem;font-size:.75rem;font-weight:600;display:inline-block}.badge-primary{background:var(--color-primary-light);color:var(--color-primary-dark)}.badge-muted{background:var(--color-bg-accent);color:var(--color-text-muted)}.badge-success{color:#15803d;background:#dcfce7}.badge-warning{color:#b45309;background:#fef3c7}.badge-danger{color:#b91c1c;background:#fee2e2}.field{margin-bottom:var(--space-4)}.field label{margin-bottom:var(--space-1);font-size:.9rem;font-weight:600;display:block}.field .hint{color:var(--color-text-muted);margin-top:.25rem;font-size:.8rem}.input,.select,.textarea{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);width:100%;color:var(--color-text);padding:.6rem .75rem;font-family:inherit;font-size:.95rem}.input:focus,.select:focus,.textarea:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #2563eb1f}.textarea{resize:vertical;min-height:120px}.form-error{color:var(--color-danger);margin-top:.25rem;font-size:.85rem}.alert{padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);margin-bottom:var(--space-4);font-size:.92rem}.alert-error{color:#991b1b;background:#fef2f2;border:1px solid #fecaca}.alert-success{color:#166534;background:#f0fdf4;border:1px solid #bbf7d0}.alert-info{background:var(--color-primary-light);color:var(--color-primary-dark);border:1px solid #bfdbfe}.hero{padding:var(--space-10) 0 var(--space-8);background:linear-gradient(180deg,var(--color-bg-soft),var(--color-bg));text-align:center}.hero h1{max-width:720px;margin-inline:auto}.hero .lead{color:var(--color-text-muted);max-width:620px;margin:0 auto var(--space-6);font-size:1.15rem}.hero-actions{gap:var(--space-3);flex-wrap:wrap;justify-content:center;display:flex}.disclaimer{color:var(--color-text-muted);background:var(--color-bg-accent);border-radius:var(--radius-sm);padding:var(--space-3) var(--space-4);margin-top:var(--space-4);font-size:.85rem}.auth-shell{max-width:440px;margin:var(--space-10) auto;padding:0 var(--space-5)}.auth-card{padding:var(--space-6)}.prose h2{margin-top:var(--space-6)}.prose ul{padding-left:1.25rem}.prose li{margin-bottom:var(--space-2)}.divider{background:var(--color-border);height:1px;margin:var(--space-6) 0;border:0}.flex,.flex-between{gap:var(--space-4);align-items:center;display:flex}.flex-between{justify-content:space-between}.mt-2{margin-top:var(--space-2)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mb-4{margin-bottom:var(--space-4)}@media (width<=640px){.flex-between{flex-direction:column;align-items:stretch}}