:root {
  --bg: #f0f0f0;
  --primary: #2f3b52;
  --accent: #4c6fff;
  --text: #1f2933;
  --muted: #6b7280;
  --white: #ffffff;
  --card-bg: #ffffff;
  --card-border: #e5e7eb;
}

body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
}

h1, h2, h3 {
  color: var(--primary);
}

p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
}

main {
  padding-bottom: 40px;
}

/* Navigaatio */
nav {
  background-color: var(--primary);
}

nav ul {
  list-style: none;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  gap: 20px;
  max-width: 960px;
}

nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

nav a:hover {
  text-decoration: underline;
}

/* Hero-osuus */
.hero {
  padding: 80px 20px 60px;
  background-image:
    linear-gradient(135deg, rgba(15, 23, 42, 0.55), rgba(30, 64, 175, 0.45)),
    url("https://images.pexels.com/photos/1181675/pexels-photo-1181675.jpeg?auto=compress&cs=tinysrgb&w=1600");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  font-size: 32px;
  margin-bottom: 16px;
  color: var(--white);
}

.hero-text {
  color: var(--white);
  margin: 0 auto 24px;
  max-width: 640px;
}

.button {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--accent);
  color: var(--white);
  border-radius: 999px;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
}

.button:hover {
  background-color: #3b5bdb;
}

/* Yleiset sisältöosiot */
.content-section,
.page-header {
  padding: 40px 20px 20px;
}

.section-inner {
  max-width: 800px;
  margin: 0 auto;
}

.page-header p {
  color: var(--muted);
}

/* Ominaisuuskortit toisella sivulla */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.feature-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 16px 18px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}