:root {
  --bg: #fafafa;
  --bg-elev: #ffffff;
  --bg-soft: #f3f5f8;
  --text: #15171a;
  --text-muted: #5d6470;
  --text-soft: #8a909a;
  --primary: #1259df;
  --primary-dark: #0e44ab;
  --accent: #ff7a00;
  --success: #14a86b;
  --warn: #d83a3a;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(15,23,42,0.06), 0 1px 1px rgba(15,23,42,0.04);
  --shadow-md: 0 8px 24px rgba(15,23,42,0.08);
  --radius: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Inter", "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: 44px; font-weight: 700; margin-bottom: 18px; }
h2 { font-size: 32px; font-weight: 700; margin-bottom: 14px; }
h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
p { margin: 0; color: var(--text-muted); }

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 20px;
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-dot {
  width: 13px; height: 13px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 30%, var(--accent));
  flex-shrink: 0;
}
.brand-plus { color: var(--accent); }
.nav nav { display: flex; gap: 22px; margin-left: auto; }
.nav nav a { color: var(--text-muted); font-size: 14px; }
.nav nav a:hover { color: var(--text); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-family: inherit;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer; text-decoration: none;
  transition: transform .05s ease, background .15s ease, box-shadow .15s ease;
  white-space: nowrap;
  font-weight: 500;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-lg { padding: 14px 22px; font-size: 16px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg-soft); }

/* Hero */
.hero { padding: 64px 0 80px; }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.badge {
  display: inline-block; padding: 5px 12px;
  background: rgba(18,89,223,0.08); color: var(--primary);
  border-radius: 999px; font-size: 12px; font-weight: 600;
  margin-bottom: 20px; letter-spacing: 0.02em;
}
.accent { color: var(--accent); }
.lead { font-size: 18px; margin-bottom: 28px; max-width: 540px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.trust-row {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: 13px; color: var(--text-soft);
}

.hero-mockup {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-md);
}
.mock-card { display: grid; gap: 1px; background: var(--border); border-radius: 8px; overflow: hidden; }
.mock-row {
  display: grid; grid-template-columns: 1.6fr 0.6fr 0.9fr 0.7fr;
  padding: 10px 12px; background: var(--bg-elev); font-size: 13px;
  align-items: center; gap: 8px;
}
.mock-row-head {
  background: var(--bg-soft); font-weight: 600; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-soft);
}
.mock-row-good { background: rgba(20,168,107,0.04); }
.mock-row-warn { background: rgba(216,58,58,0.03); }
.mock-row-cat {
  background: var(--bg-soft); font-weight: 700; font-size: 12px; padding: 8px 12px;
  grid-template-columns: 1fr; color: var(--text);
}
.mock-row-subcat {
  background: rgba(0,0,0,0.024); font-weight: 600; font-size: 12px; color: var(--text-soft);
  padding-left: 18px;
}
.mock-row-subcat > div:first-child::before { content: '─ '; opacity: 0.5; }
.mock-row-src { padding-left: 36px; }
.mock-src-name { display: flex; align-items: center; gap: 6px; }
.mock-favicon { width: 14px; height: 14px; flex-shrink: 0; }
.mock-roas-badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
}
.mock-roas-badge.good { background: rgba(46,125,50,0.12); color: rgb(46,125,50); }
.mock-roas-badge.mid  { background: rgba(25,118,210,0.12); color: rgb(25,118,210); }
.mock-roas-badge.bad  { background: rgba(198,40,40,0.12); color: rgb(198,40,40); }
.num-good { color: var(--success); font-weight: 600; }
.num-bad { color: var(--warn); font-weight: 600; }
.num-muted { color: var(--text-soft); }
.mock-caption { text-align: center; color: var(--text-soft); font-size: 12px; margin-top: 12px; }

/* Features */
.features { padding: 60px 0; background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.features h2, .how h2, .tariffs h2, .faq h2 { margin-bottom: 36px; }
.section-lead { color: var(--text-muted); margin-bottom: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card .ic { font-size: 26px; margin-bottom: 10px; }

/* How */
.how { padding: 72px 0; }
.steps { display: grid; gap: 18px; max-width: 720px; }
.step { display: flex; gap: 18px; align-items: flex-start; padding: 18px 20px; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); }
.step-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 700;
}

/* Tariffs */
.tariffs { padding: 72px 0; background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.tariff { display: flex; flex-direction: column; position: relative; }
.tariff .price { font-size: 32px; font-weight: 700; margin: 8px 0 18px; }
.tariff .price span { font-size: 14px; color: var(--text-muted); font-weight: 400; }
.tariff ul { list-style: none; padding: 0; margin: 0; }
.tariff ul li { padding: 8px 0; border-top: 1px solid var(--border); font-size: 14px; color: var(--text); }
.tariff ul li:first-child { border-top: none; }
.tariff-featured { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(18,89,223,0.10); }
.ribbon {
  position: absolute; top: -10px; right: 18px;
  background: var(--primary); color: #fff;
  padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 600;
}

/* FAQ */
.faq { padding: 72px 0; }
.faq details {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 20px;
  margin-bottom: 10px;
}
.faq summary {
  cursor: pointer; font-weight: 600; font-size: 15px;
  user-select: none; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; float: right; color: var(--text-soft); font-weight: 400; }
.faq details[open] summary::after { content: '−'; }
.faq details p { margin-top: 10px; }

/* Final CTA */
.cta-final {
  padding: 72px 0;
  text-align: center;
  background: linear-gradient(180deg, #f4f7fc 0%, #eaf0fa 100%);
  border-top: 1px solid var(--border);
}
.cta-final h2 { margin-bottom: 8px; }
.cta-final p { margin-bottom: 24px; }

/* Footer */
.footer { padding: 36px 0 48px; border-top: 1px solid var(--border); background: var(--bg-elev); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 22px; }
.footer-org { margin-top: 8px; font-size: 12px; color: var(--text-soft); }
.footer-nav { display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer-nav a { color: var(--text-muted); }

/* Responsive */
@media (max-width: 880px) {
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .hero { padding: 36px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .grid-3 { grid-template-columns: 1fr; }
  .nav-inner { gap: 12px; }
  .nav nav { display: none; }
  .mock-row { grid-template-columns: 1.4fr 0.6fr 0.8fr 0.7fr; font-size: 12px; }
}

@media (max-width: 480px) {
  h1 { font-size: 26px; line-height: 1.2; }
  h2 { font-size: 20px; }
  .lead { font-size: 16px; }
  .hero { padding: 24px 0 36px; }
  .mock-row { font-size: 10px; padding: 8px 10px; }
  .mock-row > div:nth-child(2) { display: none; }  /* колонка "Заказы" — менее важна */
  .mock-row.mock-row-head > div:nth-child(2) { display: none; }
  .container { padding: 0 16px; }
  .cta-row { flex-direction: column; align-items: stretch; }
  .cta-row .btn { text-align: center; }
}