:root { --ink:#0f172a; --muted:#64748b; --brand:#2563eb; --bg:#ffffff; --alt:#f8fafc; }
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Ubuntu,Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;height:auto;border-radius:14px}
.container{max-width:1100px;margin:0 auto;padding:clamp(14px,2vw,24px)}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5e7eb;z-index:20}
.hdr{display:flex;gap:16px;align-items:center;justify-content:space-between}
.logo{text-decoration:none;font-weight:900;color:var(--ink)}
.nav a{margin-left:14px;text-decoration:none;color:var(--ink);font-weight:600}
.btn{display:inline-block;padding:12px 18px;border-radius:999px;border:1px solid var(--ink);text-decoration:none;font-weight:700}
.btn.small{padding:8px 12px;font-size:14px}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.wide{display:block;text-align:center}
.hero{display:grid;gap:24px;align-items:center}
.sub{color:var(--muted)}
.trust{list-style:none;padding-left:0;margin:12px 0}
.trust li{margin:6px 0}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{background:#eef2ff;border:1px solid #c7d2fe;color:#1e293b;padding:6px 10px;border-radius:999px;font-size:13px}
.section{padding:40px 0}
.section.alt{background:var(--alt)}
.grid{display:grid;gap:24px}
.grid.two{grid-template-columns:1fr}
.grid.three{grid-template-columns:1fr}
@media(min-width:900px){.grid.two{grid-template-columns:1fr 1fr}.grid.three{grid-template-columns:1fr 1fr 1fr}}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:18px;box-shadow:0 4px 16px rgba(0,0,0,.03)}
.form input,.form select,.form textarea{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:10px;margin-top:6px}
.form label{display:block;margin-bottom:12px;font-weight:600}
.checklist{list-style:none;padding-left:0}
.checklist li{padding-left:28px;position:relative;margin:8px 0}
.checklist li::before{content:"✔";position:absolute;left:0;color:var(--brand)}
.post-card h2{margin-bottom:4px}
.prose h1,.prose h2,.prose h3{line-height:1.2}
.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:12px}
.cards .card img{margin-bottom:10px}
.site-footer{background:#0f172a;color:#fff;margin-top:40px;padding-top:24px}
.site-footer a{color:#cbd5e1}
.site-footer .grid{grid-template-columns:1fr}
@media(min-width:900px){.site-footer .grid{grid-template-columns:2fr 1fr 1fr}}
.list{list-style:none;margin:0;padding-left:0}
.copyright{font-size:12px;color:#94a3b8;padding:8px 0 24px}
.back-to-top{position:fixed;right:16px;bottom:16px;background:#0f172a;color:#fff;border-radius:999px;padding:10px 14px;text-decoration:none;box-shadow:0 8px 24px rgba(0,0,0,.15)}
.tiny{font-size:12px;color:#64748b}