:root {
  color-scheme: light;
  --bg: #f6f7f8;
  --surface: #ffffff;
  --line: #d9dfdc;
  --text: #17201c;
  --muted: #69736f;
  --accent: #d36f27;
  --green: #1d8a5a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.site-header h1,
.hero h2,
.hero p {
  margin: 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.site-header h1 {
  font-size: 28px;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-header a {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--surface);
}

.policy {
  max-width: 920px;
  margin: 0 auto;
  padding: 34px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.policy h2 {
  margin: 0 0 18px;
  font-size: 34px;
}

.policy h3 {
  margin: 28px 0 10px;
  font-size: 20px;
}

.policy p,
.policy li {
  color: var(--muted);
  line-height: 1.85;
}

.policy ul {
  padding-left: 20px;
}

main {
  padding: 30px 32px 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.55fr);
  gap: 28px;
  align-items: center;
  min-height: 360px;
  padding: 34px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-copy h2 {
  max-width: 760px;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.08;
}

.hero-copy p:last-child {
  max-width: 620px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero img {
  width: 100%;
  min-height: 260px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.course-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.course-strip article {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.course-strip img {
  width: 86px;
  aspect-ratio: 1.3;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.course-strip span {
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.course-strip strong {
  display: block;
  margin-top: 4px;
  font-size: 17px;
}

@media (max-width: 760px) {
  .site-header,
  main {
    padding-inline: 18px;
  }

  .hero,
  .course-strip {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 22px;
  }
}