:root {
  --dark: #0b1220;
  --light: #ffffff;
  --bg: #f6f7fb;
  --text: #0f172a;
  --muted: #647085;
  --border: #e5e7eb;
  --primary: #2563eb;
}

/* RESET */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

/* LAYOUT */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 18px;
}

/* HEADER */
.site-header {
  background: white;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: #000;
}

.brand img {
  height: 42px;
  background: transparent;
}

.nav {
  display: flex;
  gap: 18px;
}

.nav a {
  font-weight: 600;
  color: #000;
}

.nav .btn {
  background: var(--primary);
  color: white;
  padding: 8px 14px;
  border-radius: 8px;
}

/* HERO */
.hero {
  background: var(--primary);
  color: white;
  padding: 70px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 14px;
}

.hero p {
  max-width: 760px;
  margin: 0 auto 26px;
  opacity: 0.95;
}

.hero .btn {
  background: #000;
  color: #fff;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
}

/* SECTIONS */
.section {
  padding: 60px 0;
}

.section h2 {
  text-align: center;
  margin-bottom: 26px;
  font-size: 1.9rem;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

/* CARDS */
.card {
  background: white;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,.05);
}

.card img {
  width: 100%;
  border-radius: 10px;
}

/* FOOTER */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 26px 0;
  margin-top: 60px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: #000;
}