*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #090B10;
  --s1: #131720;
  --s2: #1A1F2E;
  --s3: #222840;
  --border: #272D40;
  --border-hi: #353D55;
  --accent: #3D7EFF;
  --accent-lo: rgba(61,126,255,.10);
  --accent2: #7C5CFF;
  --text: #D8DEEC;
  --text-2: #8891A8;
  --text-3: #4E5669;
  --success: #10B981;
  --error: #EF4444;
  --radius: 10px;
  --mono: ui-monospace,'JetBrains Mono','Fira Code',monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui,-apple-system,sans-serif;
  line-height: 1.6;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
}

a { color: inherit; text-decoration: none; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(9,11,16,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 32px;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.logo-icon {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
}
.nav { display: flex; gap: 24px; flex: 1; }
.nav a { color: var(--text-2); font-size: 14px; font-weight: 500; }
.nav a:hover { color: var(--text); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 10px 18px; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: none; transition: all .15s; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #5A8FFF; box-shadow: 0 0 20px rgba(61,126,255,.35); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--border-hi); background: var(--s2); }

.hero { padding: 96px 0 72px; text-align: center; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent-lo); border: 1px solid rgba(61,126,255,.3);
  color: var(--accent); font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 24px;
}
.hero h1 { font-size: 48px; font-weight: 800; letter-spacing: -1.5px; line-height: 1.15; }
.hero h1 span { background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--text-2); font-size: 18px; max-width: 620px; margin: 20px auto 36px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }

.section { padding: 72px 0; border-top: 1px solid var(--border); }
.section-head { text-align: center; max-width: 560px; margin: 0 auto 48px; }
.section-head .eyebrow { color: var(--accent); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.section-head h2 { font-size: 32px; font-weight: 800; letter-spacing: -.5px; margin-top: 10px; }
.section-head p { color: var(--text-2); margin-top: 12px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--s1); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.card-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--accent-lo); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 16px;
}
.card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--text-2); font-size: 14px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.step { position: relative; padding-left: 44px; }
.step-num {
  position: absolute; left: 0; top: 0;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--s2); border: 1px solid var(--border-hi);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px; color: var(--accent);
}
.step h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.step p { color: var(--text-2); font-size: 14px; }

.code-block {
  background: var(--s1); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  font-family: var(--mono); font-size: 13px; color: var(--text-2);
  overflow-x: auto;
}
.code-block .url { color: var(--accent); }
.code-block .param { color: var(--accent2); }

.form-wrap {
  max-width: 480px; margin: 0 auto;
  background: var(--s1); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field label { font-size: 13px; color: var(--text-2); font-weight: 500; }
.field input, .field textarea {
  background: var(--s2); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 10px 12px;
  font-size: 14px; outline: none; width: 100%; font-family: inherit;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 90px; }
.form-msg { font-size: 14px; padding: 12px 14px; border-radius: 8px; margin-top: 16px; display: none; }
.form-msg.success { display: block; background: rgba(16,185,129,.12); color: var(--success); }
.form-msg.error { display: block; background: rgba(239,68,68,.12); color: var(--error); }
.btn-block { width: 100%; }

.footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; }
.footer p { color: var(--text-3); font-size: 13px; }

@media (max-width: 780px) {
  .nav { display: none; }
  .hero h1 { font-size: 34px; }
  .grid, .steps { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}