:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f0f2f7;
  --text: #14161c;
  --muted: #616777;
  --line: #dfe3ec;
  --accent: #1f5eff;
  --accent-strong: #1746bf;
  --accent-soft: #e9efff;
  --good: #147a52;
  --shadow: 0 18px 50px rgba(23, 31, 56, .10);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --content: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, input, select, textarea { font: inherit; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 9999;
  padding: 10px 14px;
  background: var(--text);
  color: white;
  border-radius: 8px;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(223, 227, 236, .9);
  background: rgba(246, 247, 251, .88);
  backdrop-filter: blur(16px);
}
.header-inner {
  width: min(calc(100% - 32px), var(--content));
  min-height: 70px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.02em;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--text);
  font-size: .78rem;
  letter-spacing: .02em;
}
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 650; font-size: .94rem; }
.nav a:hover, .nav a:focus-visible { color: var(--text); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 750;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { background: var(--accent-strong); transform: translateY(-1px); }
.button:focus-visible { outline: 3px solid rgba(31, 94, 255, .25); outline-offset: 2px; }
.button.secondary { background: var(--surface); color: var(--text); border-color: var(--line); }
.button.secondary:hover { background: var(--surface-2); }
.button.small { min-height: 38px; padding: 0 14px; font-size: .9rem; }

.page-shell { width: min(calc(100% - 32px), var(--content)); margin: auto; }
.hero {
  padding: 92px 0 72px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  color: var(--muted);
  font-size: .82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.hero h1 {
  max-width: 920px;
  margin: 24px auto 18px;
  font-size: clamp(2.75rem, 7vw, 5.8rem);
  line-height: .98;
  letter-spacing: -.065em;
}
.hero p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.65;
}
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.promise-strip {
  margin: 38px auto 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 9px;
  max-width: 900px;
}
.promise-strip span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: .88rem;
  font-weight: 700;
}

.section { padding: 76px 0; }
.section-head { max-width: 720px; margin-bottom: 30px; }
.section-kicker { color: var(--accent); font-weight: 850; letter-spacing: .04em; text-transform: uppercase; font-size: .78rem; }
.section h2 { margin: 8px 0 12px; font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -.045em; line-height: 1.05; }
.section-head p, .section p.lead { margin: 0; color: var(--muted); line-height: 1.7; }

.component-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.component-card {
  position: relative;
  overflow: hidden;
  min-height: 460px;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
}
.component-card h3 { margin: 0 0 8px; font-size: 1.55rem; letter-spacing: -.03em; }
.component-card p { margin: 0; color: var(--muted); line-height: 1.6; max-width: 48ch; }
.card-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.card-meta span { font-size: .78rem; font-weight: 750; color: var(--muted); background: var(--surface-2); border-radius: 999px; padding: 6px 9px; }
.card-preview {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 82px;
  height: 190px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(#fff, #f8f9fc);
}
.fake-page-lines { padding: 22px; display: grid; gap: 10px; }
.fake-page-lines i { display: block; height: 8px; border-radius: 999px; background: #e7eaf1; }
.fake-page-lines i:nth-child(2n) { width: 76%; }
.fake-page-lines i:nth-child(3n) { width: 58%; }
.preview-backtop {
  position: absolute;
  width: 44px;
  height: 44px;
  right: 16px;
  bottom: 16px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--text);
  color: #fff;
  font-size: 1.3rem;
  box-shadow: 0 7px 18px rgba(20,22,28,.2);
}
.preview-progress-track { position: absolute; inset: 0 0 auto; height: 4px; background: #edf0f5; }
.preview-progress-fill { width: 67%; height: 100%; background: var(--accent); }
.card-action { position: absolute; left: 26px; bottom: 26px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
.step-number { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 900; }
.step h3 { margin: 18px 0 8px; }
.step p { margin: 0; color: var(--muted); line-height: 1.6; }

.quality-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.quality { padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); }
.quality strong { display: block; margin-bottom: 7px; }
.quality span { color: var(--muted); font-size: .9rem; line-height: 1.5; }

.compare {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.compare-row { display: grid; grid-template-columns: 1.3fr 1fr 1fr; }
.compare-row > div { padding: 16px 20px; border-bottom: 1px solid var(--line); }
.compare-row > div + div { border-left: 1px solid var(--line); }
.compare-row.head { font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; font-weight: 850; background: var(--surface-2); }
.compare-row:last-child > div { border-bottom: 0; }
.compare .yes { color: var(--good); font-weight: 800; }

.cta-box { padding: 48px; text-align: center; background: var(--text); color: white; border-radius: var(--radius-lg); }
.cta-box h2 { margin: 0 0 12px; }
.cta-box p { max-width: 620px; margin: 0 auto 24px; color: #c7cad4; line-height: 1.6; }
.cta-box .button { background: white; color: var(--text); }

.site-footer { padding: 34px 0 44px; color: var(--muted); font-size: .9rem; }
.footer-inner { width: min(calc(100% - 32px), var(--content)); margin: auto; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-top: 24px; }

@media (max-width: 900px) {
  .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .component-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .header-inner { width: min(calc(100% - 24px), var(--content)); min-height: 62px; }
  .nav a:not(.button) { display: none; }
  .page-shell { width: min(calc(100% - 24px), var(--content)); }
  .hero { padding: 66px 0 46px; text-align: left; }
  .hero h1 { margin-left: 0; }
  .hero p { margin-left: 0; }
  .hero-actions, .promise-strip { justify-content: flex-start; }
  .section { padding: 56px 0; }
  .quality-grid { grid-template-columns: 1fr; }
  .compare { overflow-x: auto; }
  .compare-row { min-width: 650px; }
  .cta-box { padding: 34px 22px; text-align: left; }
  .footer-inner { width: min(calc(100% - 24px), var(--content)); flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}