* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --ink: #162033;
  --muted: #5e6878;
  --line: #d9deea;
  --panel: #ffffff;
  --accent: #3157d5;
  --accent-dark: #243b82;
  --signal: #db3b30;
  --shadow: 0 18px 50px rgba(22, 32, 51, 0.11);
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 14% 10%, rgba(49, 87, 213, 0.12), transparent 28%), var(--bg);
  line-height: 1.6;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.section,
.footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  padding: 28px 0 18px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 56px;
}

.brand {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 42px;
  align-items: center;
  padding: 24px 0 72px;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(2.8rem, 7vw, 6.25rem);
  line-height: 0.94;
  letter-spacing: -0.045em;
}

.hero p {
  margin: 24px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 1.12rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.hero-panel {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.metric {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 6px;
  font-size: 1.8rem;
  line-height: 1;
}

.section {
  padding: 52px 0;
}

.section h2 {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 4vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.section-lead {
  max-width: 780px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.cards,
.visual-grid,
.file-grid {
  display: grid;
  gap: 18px;
}

.cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.visual,
.file-card,
.table-wrap {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.card,
.file-card {
  padding: 22px;
}

.card h3,
.visual h3,
.file-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.card p,
.file-card p,
.visual p {
  margin: 0;
  color: var(--muted);
}

.visual-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.visual {
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(22, 32, 51, 0.07);
}

.visual div {
  padding: 18px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.code-block {
  overflow-x: auto;
  padding: 18px;
  border-radius: 8px;
  background: #111827;
  color: #edf2ff;
  font-size: 0.9rem;
}

.file-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.footer {
  padding: 34px 0 52px;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .nav,
  .hero {
    display: block;
  }

  .nav-links {
    margin-top: 16px;
  }

  .hero-panel {
    margin-top: 32px;
  }

  .cards,
  .visual-grid,
  .file-grid {
    grid-template-columns: 1fr;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }
}