:root{
  --teal-50:#eff8fa;
  --teal-100:#d6eef2;
  --teal-200:#a7dde4;
  --teal-400:#5fb4c2;
  --teal-500:#3b9aab;
  --teal-600:#1d6f80;
  --teal-700:#0e3a4a;
  --teal-900:#0a2630;
  --ink-50:#f8fafc;
  --ink-100:#f1f5f9;
  --ink-200:#e2e8f0;
  --ink-300:#cbd5e1;
  --ink-500:#64748b;
  --ink-700:#334155;
  --ink-900:#0f172a;
  --warn:#b45309;
  --bg:#ffffff;
  --bg-alt:#f4f8fa;
  --bg-deep:#0a2630;
  --fg:#0f172a;
  --fg-muted:#475569;
  --border:#e2e8f0;
  --radius:14px;
  --shadow:0 1px 2px rgba(15,23,42,.04), 0 8px 24px rgba(15,23,42,.06);
  --maxw:1080px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Helvetica Neue",Helvetica,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--teal-600);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink-900);font-weight:600;line-height:1.25;margin:0 0 .5em}
h1{font-size:44px;letter-spacing:-0.02em}
h2{font-size:28px;letter-spacing:-0.01em;margin-top:48px}
h3{font-size:20px;margin-top:32px}
p,li{font-size:16px;color:var(--ink-700)}
small,.muted{color:var(--fg-muted);font-size:14px}
hr{border:0;border-top:1px solid var(--border);margin:32px 0}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* Header / Nav */
.site-header{position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(14px);background:rgba(255,255,255,.85);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:16px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--ink-900)}
.brand img{width:28px;height:28px;border-radius:8px}
.nav-links{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-links a{color:var(--ink-700);padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500}
.nav-links a:hover{background:var(--teal-50);color:var(--teal-700);text-decoration:none}
.nav-links a.active{color:var(--teal-700);background:var(--teal-50)}
.nav .cta{margin-left:8px;background:var(--teal-700);color:#fff;padding:8px 14px;border-radius:10px;font-weight:600;font-size:14px}
.nav .cta:hover{background:var(--teal-600);text-decoration:none;color:#fff}

/* Hero */
.hero{padding:80px 0 56px;background:linear-gradient(180deg,var(--teal-50) 0%,#fff 100%)}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
@media(max-width:880px){.hero .container{grid-template-columns:1fr;gap:32px}}
.hero h1 span.gradient{background:linear-gradient(90deg,var(--teal-500),var(--teal-700));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:var(--ink-700);max-width:560px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--teal-700);color:#fff}
.btn-primary:hover{background:var(--teal-600);text-decoration:none;color:#fff}
.btn-ghost{background:#fff;color:var(--ink-900);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--teal-200);text-decoration:none;color:var(--ink-900)}
.hero .visual{padding:24px;background:#fff;border-radius:18px;box-shadow:var(--shadow);border:1px solid var(--border)}

/* Sections */
section{padding:32px 0}
.section-title{display:flex;align-items:baseline;justify-content:space-between;margin:0 0 8px}
.section-title h2{margin:0}
.section-title .kicker{font-size:12px;color:var(--teal-600);text-transform:uppercase;letter-spacing:.12em;font-weight:700}

/* Card grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:880px){.grid-3,.grid-2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--ink-700);font-size:15px}
.icon-chip{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--teal-50);color:var(--teal-600);margin-bottom:12px;font-weight:700}

/* Tabs */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0 8px}
.tab{padding:6px 12px;border-radius:999px;background:var(--ink-100);color:var(--ink-700);font-size:13px;font-weight:500;cursor:default}

/* Tables */
.tbl{width:100%;border-collapse:collapse;margin-top:16px;font-size:15px}
.tbl th,.tbl td{padding:12px 10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.tbl th{background:var(--bg-alt);color:var(--ink-900);font-weight:600;font-size:13px;letter-spacing:.04em;text-transform:uppercase}
.tbl td.check{color:var(--teal-600);font-weight:600}
.tbl td.dash{color:var(--ink-500)}

/* FAQ */
details.faq{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 18px;margin:10px 0;box-shadow:var(--shadow)}
details.faq[open]{border-color:var(--teal-200)}
details.faq summary{font-weight:600;cursor:pointer;color:var(--ink-900);list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--teal-600);font-weight:600;font-size:20px;line-height:1}
details.faq[open] summary::after{content:"–"}
details.faq .a{margin-top:8px;color:var(--ink-700);font-size:15px}

/* Code */
code,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--ink-100);padding:2px 6px;border-radius:6px;font-size:13.5px;color:var(--ink-900)}
pre{background:var(--ink-900);color:#e2e8f0;padding:16px;border-radius:12px;overflow-x:auto;font-size:13.5px;line-height:1.6}
pre code{background:transparent;padding:0;color:inherit}

/* Badge / Pill */
.pill{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:var(--teal-50);color:var(--teal-700)}
.pill.warn{background:#fff7ed;color:var(--warn)}
.pill.ok{background:#ecfdf5;color:#047857}
.pill.muted{background:var(--ink-100);color:var(--ink-500)}

/* Hero stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
@media(max-width:720px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 14px;text-align:center}
.stat strong{display:block;font-size:22px;color:var(--teal-700);font-weight:600}
.stat span{font-size:12px;color:var(--ink-500);text-transform:uppercase;letter-spacing:.05em}

/* Footer */
footer{background:var(--bg-deep);color:#cbd5e1;padding:48px 0 32px;margin-top:64px}
footer a{color:#e2e8f0}
footer h4{color:#fff;font-size:14px;letter-spacing:.05em;text-transform:uppercase;margin:0 0 12px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:24px}
@media(max-width:880px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-bottom{border-top:1px solid #1f3a44;padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;color:#94a3b8;font-size:13px}

/* Callout */
.callout{border:1px solid var(--teal-200);background:linear-gradient(180deg,var(--teal-50),#fff);border-radius:14px;padding:18px 20px;margin:24px 0}
.callout strong{color:var(--teal-700)}
.callout.warn{border-color:#fdba74;background:linear-gradient(180deg,#fff7ed,#fff)}

/* Visual mock */
.mock{background:linear-gradient(180deg,#fff,#f1f5f9);border:1px solid var(--border);border-radius:14px;padding:18px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;color:#0f172a}
.mock .row{display:flex;gap:10px;margin:6px 0}
.mock .badge{background:var(--teal-100);color:var(--teal-700);padding:2px 8px;border-radius:6px;font-size:11.5px}
.mock .seg{padding:10px 12px;border-left:3px solid var(--teal-400);background:#fff;border-radius:0 8px 8px 0;color:#0f172a;margin:6px 0}
.mock .ts{color:#64748b;font-size:11.5px;width:60px;flex-shrink:0}
.mock .live{display:flex;align-items:center;gap:6px;color:var(--teal-600);font-weight:600}
.mock .dot{width:8px;height:8px;border-radius:50%;background:#ef4444;box-shadow:0 0 0 4px rgba(239,68,68,.18);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* Inline list */
.feature-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px}
@media(max-width:720px){.feature-list{grid-template-columns:1fr}}
.feature-list li{display:flex;align-items:flex-start;gap:8px;color:var(--ink-700);font-size:15px}
.feature-list li::before{content:"✓";color:var(--teal-600);font-weight:700;flex-shrink:0}

/* Skip link */
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:8px;top:8px;background:#fff;border:1px solid var(--border);padding:8px 12px;border-radius:8px}