@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

:root{
  --bg:#F4F6FB; --surface:#FFFFFF; --surface2:#EEF1F7; --ink:#10131A; --muted:#5B6472; --line:#E1E6F0;
  --accent:#0D9488; --accent-ink:#0F6B62; --accent-soft:#E4F5F3;
  --warn:#FB923C; --danger:#E11D48;
  --radius-sm:10px; --radius-md:16px; --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(16,19,26,.06); --shadow-md:0 12px 32px -12px rgba(16,19,26,.18); --shadow-lg:0 24px 64px -20px rgba(16,19,26,.28);
  --font-display:'Space Grotesk', sans-serif; --font-body:'Inter', sans-serif; --font-mono:'JetBrains Mono', monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:var(--font-body);background:var(--bg);color:var(--ink);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;letter-spacing:-.01em;}
p{margin:0;}
.container{max-width:1120px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);}

.nav{position:sticky;top:0;z-index:100;background:rgba(244,246,251,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.nav-inner{max-width:1120px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;gap:32px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:18px;}
.nav-logo .mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-ink));display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;}
.nav-links{display:flex;gap:26px;margin-left:8px;flex:1;}
.nav-links a{font-size:14px;font-weight:600;color:var(--muted);transition:color .15s ease;white-space:nowrap;}
.nav-links a:hover, .nav-links a.active{color:var(--ink);}
.nav-cta{display:flex;gap:10px;}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:99px;font-weight:700;font-size:14.5px;cursor:pointer;border:none;font-family:var(--font-body);transition:transform .15s ease, box-shadow .15s ease, background .15s ease;white-space:nowrap;}
.btn:active{transform:scale(.97);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -8px rgba(13,148,136,.5);}
.btn-primary:hover{box-shadow:0 14px 28px -8px rgba(13,148,136,.6);}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-block{width:100%;}

section{padding:88px 0;}
.eyebrow{font-family:var(--font-mono);font-size:12.5px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.08em;display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;}
.eyebrow::before{content:'';width:16px;height:2px;background:var(--accent);border-radius:2px;}
h2.section-title{font-size:clamp(28px,4vw,40px);font-weight:700;line-height:1.15;max-width:640px;}
p.section-lead{font-size:17px;color:var(--muted);max-width:560px;margin-top:16px;line-height:1.65;}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);}

footer{border-top:1px solid var(--line);padding:56px 0 32px;background:var(--surface);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:16px;}
.footer-col a{display:block;font-size:14.5px;color:var(--ink);margin-bottom:10px;font-weight:500;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:28px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);flex-wrap:wrap;gap:12px;}

@media (max-width:860px){
  .nav-links{display:none;}
  section{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .hero-grid{grid-template-columns:1fr !important;}
  .tools-grid{grid-template-columns:1fr !important;}
}
@media (max-width:600px){ .footer-grid{grid-template-columns:1fr;} }

a:focus-visible, button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
@media (prefers-reduced-motion: reduce){ *{animation-duration:0.01ms !important;transition-duration:0.01ms !important;} html{scroll-behavior:auto;} }

.doc{max-width:760px;margin:0 auto;padding:56px 24px 96px;}
.doc h1{font-size:32px;margin-bottom:8px;}
.doc .updated{font-size:13.5px;color:var(--muted);margin-bottom:36px;}
.doc h2{font-size:20px;margin:36px 0 12px;}
.doc h3{font-size:16px;margin:22px 0 8px;}
.doc p, .doc li{color:var(--ink);font-size:15px;line-height:1.75;}
.doc p{margin-bottom:14px;}
.doc ul, .doc ol{margin:0 0 14px;padding-left:22px;}
.doc li{margin-bottom:6px;}
.doc a{color:var(--accent);font-weight:600;text-decoration:underline;}
.doc-toc{background:var(--surface2);border-radius:var(--radius-md);padding:20px 24px;margin-bottom:36px;}
.doc-toc a{display:block;font-size:14px;font-weight:600;color:var(--ink);padding:4px 0;}
.doc-note{background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:14px 18px;font-size:14px;color:var(--accent-ink);margin:18px 0;}
.doc-warn{background:#FFF1E6;border-left:3px solid var(--warn);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:14px 18px;font-size:14px;color:#9A4A12;margin:18px 0;}