* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(47, 111, 136, 0.12), transparent 34rem),
    linear-gradient(180deg, #f8fbfd 0%, #eef5f7 46%, #fafafa 100%);
  line-height: 1.55;
}

header {
  color: white;
  background:
    linear-gradient(135deg, rgba(31, 82, 103, 0.96), rgba(47, 111, 136, 0.88)),
    repeating-linear-gradient(90deg, transparent 0 26px, rgba(255,255,255,0.08) 26px 27px);
  padding: 50px 20px 42px;
}

.wrap {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 22px;
  align-items: end;
}

.eyebrow {
  display: inline-flex;
  padding: 6px 12px;
  border: 1px solid rgba(255,255,255,0.44);
  border-radius: 999px;
  background: rgba(255,255,255,0.13);
  font-size: 0.92rem;
  font-weight: 700;
}

h1 {
  margin: 16px 0 10px;
  font-size: clamp(2.2rem, 5.8vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 820px;
  margin: 0;
  font-size: 1.08rem;
  color: rgba(255,255,255,0.94);
}

.term-card {
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 8px;
  padding: 18px;
}

.term-card h2 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.term-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
}

main {
  margin: -22px auto 56px;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.card,
.tabs-shell {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.card {
  padding: 22px;
}

.card h2,
.lesson h2 {
  margin: 0 0 10px;
  font-size: 1.38rem;
  line-height: 1.22;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-weight: 700;
  font-size: 0.92rem;
}

.routine {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.routine li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  align-items: start;
}

.number {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--warm);
  color: var(--gold);
  font-weight: 800;
}

.tabs-shell {
  overflow: hidden;
}

.tabs-header {
  padding: 18px 18px 0;
  border-bottom: 1px solid var(--line);
  background: #fbfdfe;
}

.tabs-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
}

.tabs-title h2 {
  margin: 0;
  font-size: 1.35rem;
}

.small-note {
  color: var(--muted);
  font-size: 0.93rem;
}

.tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 14px;
  scrollbar-width: thin;
}

.tab {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
  color: var(--ink);
  padding: 10px 13px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.tab[aria-selected="true"] {
  border-color: var(--blue);
  background: var(--blue);
  color: white;
}

.lesson {
  padding: 24px;
}

.lesson-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
  margin-bottom: 16px;
}

.week-tag {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--warm);
  color: var(--gold);
  font-weight: 800;
  white-space: nowrap;
}

.date {
  color: var(--muted);
  margin: 0;
}

.lesson-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.section {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: white;
}

.section.full {
  grid-column: 1 / -1;
}

.section h3 {
  margin: 0 0 10px;
  color: var(--blue-dark);
  font-size: 1.04rem;
}

.ko-en {
  display: grid;
  gap: 12px;
}

.lang-block {
  border-left: 4px solid var(--blue);
  padding-left: 12px;
}

.lang-block strong {
  display: inline-block;
  margin-bottom: 4px;
  color: var(--blue-dark);
}

.parent {
  background: var(--blue-soft);
  border-color: #c7e0e8;
}

.homework {
  background: var(--warm);
  border-color: #edd5b8;
}

.standards {
  background: var(--green);
  border-color: #c9e6d0;
}

ul, ol {
  margin: 0;
  padding-left: 20px;
}

li + li {
  margin-top: 5px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

button.action {
  border: 1px solid var(--blue);
  border-radius: 999px;
  background: white;
  color: var(--blue-dark);
  padding: 9px 13px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button.action.primary {
  background: var(--blue);
  color: white;
}

button.action:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

footer {
  width: min(1120px, calc(100% - 36px));
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .hero-grid,
  .cards,
  .lesson-grid,
  .lesson-head {
    grid-template-columns: 1fr;
  }

  header {
    padding-top: 36px;
  }

  .tabs-title {
    display: block;
  }
}

@media print {
  body { background: white; }
  header, .cards, .tabs-header, .actions, footer { display: none; }
  main, .wrap { width: auto; margin: 0; }
  .tabs-shell, .section { box-shadow: none; border-color: #bbb; }
  .lesson { display: block !important; break-after: page; }
}