:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --surface-alt:#f8fafc;
  --text:#0f172a;
  --muted:#475569;
  --border:#e2e8f0;
  --border-strong:#cbd5e1;
  --accent:#2563eb;
  --accent-dark:#1d4ed8;
  --accent-soft:#dbeafe;
  --success:#16a34a;
  --success-soft:#dcfce7;
  --danger:#dc2626;
  --danger-soft:#fee2e2;
  --shadow:0 12px 32px rgba(15,23,42,.08);
  --radius:20px;
  --radius-sm:12px;
  --container:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  font-size:16px;
  line-height:1.6;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 38%, #f8fafc 100%);
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code, pre{font-family:Consolas, "Courier New", monospace}
h1,h2,h3,h4{margin:0 0 12px}
p{margin:0 0 16px}
ul{margin:0 0 16px 20px}

.container{
  width:min(calc(100% - 32px), var(--container));
  margin:0 auto;
}
.narrow{width:min(calc(100% - 32px), 820px);margin:0 auto}
.section{padding:72px 0}
.section-tight{padding:32px 0}
.section-soft{background:rgba(255,255,255,.45);backdrop-filter:blur(6px)}
.stack-top-md{margin-top:18px}
.stack-top-lg{margin-top:28px}
.hidden{display:none !important}

.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.78);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(226,232,240,.9);
}
.nav{
  min-height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  color:var(--text);
  text-decoration:none;
}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;
  height:42px;
  border-radius:14px;
  background:linear-gradient(135deg, var(--accent), #0ea5e9);
  color:#fff;
  display:grid;
  place-items:center;
  font-weight:bold;
  box-shadow:0 10px 20px rgba(37,99,235,.2);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand-text small{color:var(--muted);margin-top:4px}
.nav-links{
  display:flex;
  align-items:center;
  gap:18px;
}
.nav-links a{
  color:var(--muted);
  font-weight:bold;
  padding:10px 12px;
  border-radius:10px;
}
.nav-links a:hover,
.nav-links a.is-active{
  color:var(--text);
  background:rgba(255,255,255,.72);
  text-decoration:none;
}
.nav-cta{margin-left:4px}
.nav-toggle{
  display:none;
  background:#fff;
  border:1px solid var(--border);
  border-radius:12px;
  padding:10px;
  width:48px;
  height:48px;
}
.nav-toggle span{
  display:block;
  height:2px;
  background:var(--text);
  margin:6px 0;
  border-radius:2px;
}

.hero{
  padding:72px 0 48px;
}
.hero-grid,
.docs-hero-grid,
.split-grid,
.form-layout,
.support-grid,
.footer-grid{
  display:grid;
  gap:28px;
}
.hero-grid{grid-template-columns:1.2fr .9fr;align-items:center}
.docs-hero-grid{grid-template-columns:1.1fr .9fr;align-items:start}
.split-grid{grid-template-columns:1fr 1fr}
.form-layout{grid-template-columns:.95fr 1.05fr;align-items:start}
.support-grid{grid-template-columns:1fr 1fr}
.footer-grid{grid-template-columns:1.2fr .8fr .9fr}

.eyebrow{
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-weight:bold;
  font-size:13px;
  margin-bottom:16px;
}
.lead{
  font-size:18px;
  color:var(--muted);
  max-width:780px;
}
.hero-copy h1,
.docs-hero h1,
.section-head h1,
.section-head h2,
.form-copy h1{
  font-size:clamp(2rem, 4vw, 3.6rem);
  line-height:1.08;
  letter-spacing:-.03em;
}
.section-head{
  text-align:center;
  max-width:860px;
  margin:0 auto 28px;
}
.section-head p{color:var(--muted)}
.hero-actions,
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.trust-strip{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.trust-strip span{
  background:rgba(255,255,255,.8);
  border:1px solid var(--border);
  color:var(--muted);
  padding:8px 12px;
  border-radius:999px;
  font-size:14px;
}

.card{
  background:rgba(255,255,255,.88);
  border:1px solid rgba(226,232,240,.9);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:28px;
}
.code-card{padding:20px}
.code-card-top,
.example-toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:12px;
}
.badge{
  display:inline-block;
  padding:7px 10px;
  border-radius:999px;
  background:var(--surface-alt);
  border:1px solid var(--border);
  font-size:12px;
  font-weight:bold;
  color:var(--muted);
}
.code-block{
  background:#0f172a;
  color:#e2e8f0;
  border-radius:16px;
  padding:18px;
  overflow:auto;
  font-size:14px;
  line-height:1.55;
  margin:0;
}
.response-block{margin-top:12px}
.response-head{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
  margin-bottom:8px;
}
.response-dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:#22c55e;
}

.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.feature-card h3{margin-bottom:10px}
.feature-card p{color:var(--muted)}

.endpoint-list{display:grid;gap:14px}
.endpoint-item{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--border);
}
.endpoint-item:last-child{border-bottom:0}

.method{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:58px;
  padding:7px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:bold;
  letter-spacing:.04em;
}
.method.get{
  background:var(--success-soft);
  color:#166534;
}
.check-list{
  padding-left:0;
  margin-left:0;
  list-style:none;
}
.check-list li{
  position:relative;
  padding-left:26px;
  margin:0 0 10px;
}
.check-list li:before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--accent);
}

.cta-panel{
  width:min(calc(100% - 32px), var(--container));
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  gap:24px;
  align-items:center;
  padding:28px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:linear-gradient(135deg, rgba(37,99,235,.08), rgba(14,165,233,.05), rgba(255,255,255,.88));
  box-shadow:var(--shadow);
}

.docs-hero{padding:58px 0 12px}
.docs-layout{
  display:grid;
  grid-template-columns:260px 1fr;
  gap:28px;
  align-items:start;
}
.docs-sidebar{
  position:sticky;
  top:96px;
  background:rgba(255,255,255,.88);
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
  box-shadow:var(--shadow);
}
.docs-sidebar h3{font-size:16px;margin-bottom:10px}
.docs-sidebar a{
  display:block;
  padding:10px 12px;
  border-radius:10px;
  color:var(--muted);
  font-weight:bold;
}
.docs-sidebar a:hover{
  background:var(--surface-alt);
  color:var(--text);
  text-decoration:none;
}
.docs-content{display:grid;gap:22px}
.doc-section{scroll-margin-top:100px}
.endpoint-header{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.param-table{
  width:100%;
  border-collapse:collapse;
  margin:16px 0;
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  overflow:hidden;
}
.param-table th,
.param-table td{
  padding:14px 12px;
  border-bottom:1px solid var(--border);
  text-align:left;
  vertical-align:top;
}
.param-table th{
  background:var(--surface-alt);
  font-size:14px;
}
.param-table tr:last-child td{border-bottom:0}

.builder-grid,
.error-grid{
  display:grid;
  gap:16px;
}
.builder-grid{grid-template-columns:repeat(2,1fr);margin:18px 0}
.field label{
  display:block;
  font-weight:bold;
  margin-bottom:8px;
}
.field small{display:block;color:var(--muted);margin-top:6px}
.field input,
.field textarea,
.field select{
  width:100%;
  padding:14px 15px;
  border:1px solid var(--border-strong);
  border-radius:14px;
  background:#fff;
  font:inherit;
  color:var(--text);
}
.field input:focus,
.field textarea:focus,
.field select:focus{
  outline:0;
  border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(37,99,235,.12);
}
.muted{color:var(--muted)}

.code-tabs{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.code-tabs button,
.copy-btn,
.btn{
  appearance:none;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  border-radius:12px;
  cursor:pointer;
  font:inherit;
  font-weight:bold;
}
.code-tabs button{
  padding:10px 14px;
}
.code-tabs button.is-active{
  background:var(--accent-soft);
  color:var(--accent-dark);
  border-color:#bfdbfe;
}
.tab-panel{display:none}
.tab-panel.is-active{display:block}

.copy-btn{
  padding:10px 12px;
}
.copy-btn:hover,
.code-tabs button:hover,
.btn:hover{
  text-decoration:none;
  border-color:#bfd4f5;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 18px;
}
.btn-primary{
  background:linear-gradient(135deg, var(--accent), #1d4ed8);
  border-color:transparent;
  color:#fff;
  box-shadow:0 12px 24px rgba(37,99,235,.18);
}
.btn-block{width:100%}

.alert{
  border-radius:14px;
  padding:14px 16px;
  margin-bottom:18px;
  font-weight:bold;
}
.alert-error{
  background:var(--danger-soft);
  color:#991b1b;
  border:1px solid #fecaca;
}
.alert-success{
  background:var(--success-soft);
  color:#166534;
  border:1px solid #bbf7d0;
}
.note-card,
.quick-panel{background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,250,252,.96))}
.error-grid{grid-template-columns:1fr 1fr}
.error-card{background:var(--surface-alt);border:1px solid var(--border);border-radius:16px;padding:18px}
.form-card{padding:24px}
.prose p:last-child{margin-bottom:0}

.ad-wrap{
  background:rgba(255,255,255,.88);
  border:1px dashed var(--border-strong);
  border-radius:18px;
  padding:16px;
  box-shadow:var(--shadow);
}

.site-footer{
  padding:56px 0 30px;
  border-top:1px solid rgba(226,232,240,.9);
  background:rgba(255,255,255,.55);
  margin-top:34px;
}
.site-footer h3,
.site-footer h4{margin-bottom:12px}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-links li{margin-bottom:8px}
.footer-bottom{
  border-top:1px solid var(--border);
  margin-top:24px;
  padding-top:16px;
  color:var(--muted);
}

@media (max-width: 980px){
  .hero-grid,
  .docs-hero-grid,
  .split-grid,
  .form-layout,
  .support-grid,
  .footer-grid,
  .docs-layout,
  .feature-grid,
  .error-grid,
  .builder-grid{
    grid-template-columns:1fr;
  }

  .cta-panel{
    flex-direction:column;
    align-items:flex-start;
  }

  .docs-sidebar{
    position:static;
  }

  .nav-toggle{
    display:block;
  }

  .nav-links{
    position:absolute;
    left:16px;
    right:16px;
    top:76px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:16px;
    background:rgba(255,255,255,.96);
    border:1px solid var(--border);
    border-radius:18px;
    box-shadow:var(--shadow);
  }

  .nav-links.is-open{
    display:flex;
  }

  .nav-cta{
    margin-left:0;
  }
}

@media (max-width: 640px){
  .hero{padding-top:50px}
  .section{padding:56px 0}
  .card{padding:22px}
  .brand-text small{display:none}
  .lead{font-size:17px}
}