:root {
  color-scheme: light;
  --green: #67b94f;
  --green-dark: #2f7d32;
  --yellow: #ffd966;
  --orange: #ff8a3d;
  --blue: #3f6ae6;
  --pink: #f06292;
  --ink: #202820;
  --muted: #657067;
  --line: rgba(32, 40, 32, 0.12);
  --paper: #ffffff;
  --wash: #f8fbf5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--green-dark);
  font-weight: 800;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.brand img {
  width: 132px;
  height: auto;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  font-size: 0.95rem;
}

main {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 32px;
  align-items: center;
  padding: 56px 0 40px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--green-dark);
  font-weight: 900;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  margin: 22px 0 0;
  max-width: 680px;
  color: #334034;
  font-size: 1.16rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 900;
}

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

.button.muted {
  border-color: rgba(103, 185, 79, 0.22);
  background: rgba(103, 185, 79, 0.10);
  color: var(--green-dark);
}

.hero-visual {
  display: grid;
  place-items: center;
  min-height: 340px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(103, 185, 79, 0.16), rgba(255, 217, 102, 0.18)),
    #fff;
}

.hero-visual img {
  width: min(78%, 290px);
  height: auto;
}

.section {
  padding: 36px 0;
}

.section h2 {
  margin: 0 0 18px;
  font-size: 1.75rem;
}

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

.compact-grid .card {
  min-height: 132px;
}

.card {
  min-height: 170px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 20px;
}

.card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.card p,
.panel p,
.panel li {
  color: var(--muted);
}

.mode-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.mode {
  border-radius: 8px;
  padding: 18px;
  color: #fff;
  font-weight: 900;
}

.mode span {
  display: block;
  margin-top: 6px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
}

.elementary { background: var(--green); }
.middle { background: #27205c; }
.high { background: var(--blue); }
.parent { background: var(--pink); }

.lineup {
  display: block;
  max-width: 100%;
  height: auto;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.panel {
  max-width: 860px;
  margin: 42px auto 72px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 28px;
}

.panel h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

.panel h2 {
  margin: 30px 0 8px;
  font-size: 1.25rem;
}

.panel ul {
  padding-left: 22px;
}

.back-link {
  display: inline-flex;
  margin: 34px 0 0;
}

.footer {
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
}

.footer-inner {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 38px;
  }

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