:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #111827;
  --muted: #5b6473;
  --line: #e5e7eb;
  --accent: #0f172a;
  --accent-soft: #eef2ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fbfcfe 0%, #f4f6fb 100%);
}
a { color: inherit; }
.container {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}
.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.82);
  border-bottom: 1px solid rgba(229,231,235,0.9);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 20px;
}
.brand-kicker {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 3px;
}
.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
}
.nav a:hover { color: var(--text); }
.hero {
  padding: 72px 0 56px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
}
.pill {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.84);
  color: var(--muted);
  font-size: 13px;
}
.hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 0.95;
  letter-spacing: -0.05em;
}
.hero p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 700px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.button {
  display: inline-block;
  padding: 13px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 600;
}
.button.primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.button.secondary {
  background: white;
  color: var(--text);
}
.card {
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 50px rgba(15,23,42,0.08);
}
.mock {
  padding: 18px;
}
.mock-window {
  background: #f8fafc;
  border-radius: 18px;
  border: 1px solid #e2e8f0;
  padding: 16px;
}
.mock-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.dot { width: 10px; height: 10px; border-radius: 50%; background: #cbd5e1; }
.reader-lines div {
  height: 10px;
  border-radius: 999px;
  background: #dbe4f0;
  margin-bottom: 10px;
}
.reader-lines div:nth-child(2n) { width: 88%; }
.reader-lines div:nth-child(3n) { width: 74%; }
.reader-lines div:nth-child(5n) { width: 62%; }
.focus-word {
  margin: 18px 0 14px;
  padding: 18px;
  border-radius: 16px;
  text-align: center;
  font-weight: 800;
  font-size: 30px;
  letter-spacing: -0.03em;
  background: white;
  border: 1px solid #dbe4f0;
}
.focus-word span { color: #dc2626; }
.section {
  padding: 24px 0 52px;
}
.section h2 {
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.04em;
  margin: 0 0 10px;
}
.section p.lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 760px;
  margin: 0 0 26px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.feature {
  padding: 22px;
}
.feature h3 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: -0.03em;
}
.feature p {
  margin: 0;
  line-height: 1.65;
  color: var(--muted);
}
.page-hero {
  padding: 64px 0 24px;
}
.page-hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  letter-spacing: -0.05em;
  margin: 0 0 10px;
}
.copy {
  background: rgba(255,255,255,0.94);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  line-height: 1.7;
  color: #1f2937;
}
.copy h2, .copy h3 {
  letter-spacing: -0.03em;
}
.copy p, .copy li { color: #374151; }
.copy ul { padding-left: 22px; }
.footer {
  padding: 30px 0 48px;
  color: var(--muted);
  font-size: 14px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.small-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.small-links a { text-decoration: none; }
.small-links a:hover { text-decoration: underline; }
@media (max-width: 860px) {
  .hero-grid, .grid { grid-template-columns: 1fr; }
  .header-inner { align-items: flex-start; flex-direction: column; }
}