:root {
  color-scheme: light;
  --paper: #f3ead4;
  --paper-strong: rgba(255, 250, 236, 0.94);
  --paper-card: rgba(255, 250, 234, 0.9);
  --paper-soft: rgba(220, 200, 158, 0.34);
  --ink: #2a241c;
  --ink-soft: #6f6453;
  --seal: #a8352a;
  --seal-soft: rgba(168, 53, 42, 0.14);
  --line: rgba(120, 88, 50, 0.28);
  --fiber: rgba(156, 124, 76, 0.18);
  --shadow: 0 24px 70px rgba(80, 56, 22, 0.16);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 22% 18%, rgba(150, 110, 60, 0.08), transparent 35%),
    radial-gradient(circle at 82% 14%, rgba(180, 130, 70, 0.06), transparent 32%),
    linear-gradient(178deg, rgba(255, 247, 224, 0.92), rgba(232, 215, 173, 0.96)),
    var(--paper);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, transparent 0, transparent 39px, var(--fiber) 39px, var(--fiber) 40px),
    repeating-linear-gradient(0deg, transparent 0, transparent 119px, var(--fiber) 119px, var(--fiber) 120px);
  opacity: 0.5;
  mix-blend-mode: multiply;
}

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

.qbank-shell {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: start;
  gap: 22px;
  min-height: 100vh;
  padding: 40px 20px 80px;
}

.qbank-hero,
.subject-grid {
  width: min(980px, calc(100vw - 40px));
  margin: 0 auto;
}

.qbank-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(135deg, var(--paper-strong), rgba(255, 250, 232, 0.58)),
    repeating-linear-gradient(90deg, transparent 0 30px, rgba(156, 124, 76, 0.08) 30px 31px);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--seal);
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 0.78rem;
  letter-spacing: 0.32em;
}

h1 {
  margin: 0;
  font-family: "KaiTi", "STKaiti", "Noto Serif SC", serif;
  font-size: clamp(2.2rem, 5vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  max-width: 38rem;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.9;
}

.home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--seal);
  border-radius: 8px;
  color: var(--seal);
  background: var(--seal-soft);
  white-space: nowrap;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.subject-card {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 172px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper-card);
  box-shadow: 0 18px 48px rgba(80, 56, 22, 0.1);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.subject-card:hover {
  transform: translateY(-2px);
  border-color: rgba(120, 70, 40, 0.42);
  background: var(--paper-strong);
}

.subject-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  border: 2px solid var(--seal);
  border-radius: 14px;
  color: var(--seal);
  font-family: "KaiTi", "STKaiti", serif;
  font-size: 2.1rem;
  background: var(--seal-soft);
}

.subject-copy {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.subject-status {
  color: var(--seal);
  font-size: 0.76rem;
}

.subject-copy strong {
  font-size: 1.45rem;
  line-height: 1.2;
}

.subject-copy span:last-child {
  color: var(--ink-soft);
  line-height: 1.75;
}

@media (max-width: 680px) {
  .qbank-shell {
    padding: 20px 14px 56px;
  }

  .qbank-hero,
  .subject-grid {
    width: 100%;
  }

  .qbank-hero {
    align-items: flex-start;
    flex-direction: column;
    border-radius: 18px;
  }

  .subject-card {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 18px;
  }

  .subject-mark {
    width: 56px;
    height: 56px;
    font-size: 1.8rem;
  }
}