/* yfi-site.css — shared design system for YFi Net marketing pages */
:root{
  --bg:#fafbfd; --bg-soft:#f1f5fb; --ink:#0b1b3a; --slate:#5b6b85; --slate-soft:#8b98ad;
  --blue:#2563eb; --cyan:#06b6d4; --line:#e4eaf3; --card:#ffffff;
  --grad:linear-gradient(135deg,#2563eb,#06b6d4);
  --shadow:0 1px 2px rgba(11,27,58,.04),0 12px 32px -12px rgba(11,27,58,.10);
  --shadow-lg:0 24px 64px -24px rgba(37,99,235,.25);
  --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{font-family:'DM Sans',system-ui,sans-serif;font-weight:300;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.6}
h1,h2,h3,h4,.display{font-family:'Outfit','DM Sans',sans-serif;letter-spacing:-0.03em;line-height:1.12}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
a{color:inherit}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:12px;font-family:'DM Sans';font-size:15px;font-weight:500;cursor:pointer;border:none;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px -8px rgba(37,99,235,.45)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 30px -8px rgba(37,99,235,.5)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--bg-soft)}
.eyebrow{display:inline-block;font-size:12px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.15);padding:6px 14px;border-radius:9999px;margin-bottom:20px}

/* Nav (shared) */
nav{position:sticky;top:0;z-index:50;background:rgba(250,251,253,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Outfit';font-weight:600;font-size:18px;text-decoration:none}
.logo img{width:30px;height:30px;border-radius:8px}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--slate);text-decoration:none;transition:color .15s}
.nav-links a:hover{color:var(--ink)}
.nav-r{display:flex;align-items:center;gap:10px}
.nav-r .btn{padding:10px 20px;font-size:14px}
@media (max-width:760px){.nav-links{display:none}}

/* Sub-page hero / prose */
.page-hero{padding:72px 0 40px;text-align:center}
.page-hero h1{font-size:clamp(34px,4.6vw,52px);font-weight:600;margin-bottom:16px}
.page-hero p{font-size:18px;color:var(--slate);max-width:600px;margin:0 auto}
.prose{max-width:760px;margin:0 auto;padding:8px 0 72px}
.prose h2{font-size:26px;font-weight:600;margin:40px 0 14px}
.prose h3{font-size:19px;font-weight:600;margin:28px 0 10px}
.prose p{font-size:16px;color:var(--slate);margin-bottom:16px}
.prose ul{margin:0 0 16px 22px;color:var(--slate)}
.prose li{margin-bottom:8px}
.prose a:not(.btn){color:var(--blue);text-decoration:none}
.prose a:not(.btn):hover{text-decoration:underline}
.prose a.btn-primary{color:#fff}
.prose a.btn-ghost{color:var(--ink)}
.prose strong{color:var(--ink);font-weight:500}
.muted{color:var(--slate-soft);font-size:14px}

/* Footer (shared) */
.site-foot{background:var(--bg-soft);border-top:1px solid var(--line);padding:56px 0 36px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .logo{margin-bottom:14px}
.foot-brand p{font-size:14px;color:var(--slate);max-width:280px;margin-bottom:18px}
.foot-social{display:flex;gap:10px}
.foot-social a{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--slate);transition:color .15s,border-color .15s}
.foot-social a[aria-disabled="true"]{cursor:default}
.foot-social a:not([aria-disabled]):hover{color:var(--blue);border-color:var(--blue)}
.foot-col h4{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--ink);margin-bottom:14px}
.foot-col a{display:block;font-size:14px;color:var(--slate);text-decoration:none;margin-bottom:10px;transition:color .15s}
.foot-col a:hover{color:var(--blue)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--slate-soft)}
.foot-bottom .status{display:flex;align-items:center;gap:7px}
.foot-bottom .status i{width:8px;height:8px;border-radius:50%;background:#10b981;display:inline-block;box-shadow:0 0 0 3px rgba(16,185,129,.15)}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}.foot-brand{grid-column:1/-1}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}