:root {
  --paper: #f6f0e3;
  --paper-strong: #fffaf0;
  --ink: #1d2a2f;
  --muted: #5f6d67;
  --line: rgba(29, 42, 47, 0.12);
  --accent: #c64c2f;
  --accent-deep: #8f321d;
  --forest: #2f6b57;
  --gold: #d89c2d;
  --shadow: 0 18px 45px rgba(31, 39, 35, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(216, 156, 45, 0.22), transparent 28%),
    radial-gradient(circle at top right, rgba(47, 107, 87, 0.18), transparent 24%),
    linear-gradient(180deg, #efe5cf 0%, #f8f4ea 40%, #fcfbf7 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

.page-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 24px auto 60px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: 24px;
  padding: 34px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 250, 240, 0.96), rgba(248, 244, 234, 0.9)),
    linear-gradient(120deg, rgba(198, 76, 47, 0.1), rgba(47, 107, 87, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -60px -70px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 76, 47, 0.18), transparent 70%);
}

.eyebrow,
.section-kicker,
.note-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 10px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.03;
  font-family: "KaiTi", "STKaiti", serif;
}

.hero-text {
  max-width: 640px;
  margin: 18px 0 26px;
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
}

.hero-actions,
.top-nav,
.week-summary,
.strategy-strip,
.subject-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 15px;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.subject-tab:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 25px rgba(198, 76, 47, 0.25);
}

.button-secondary {
  background: var(--forest);
  color: #fff;
  box-shadow: 0 12px 25px rgba(47, 107, 87, 0.18);
}

.button-secondary-alt {
  background: linear-gradient(135deg, #2f6b57, #234c7d);
}

.button-ghost {
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink);
  border: 1px solid rgba(29, 42, 47, 0.12);
}

.hero-panel {
  display: grid;
  gap: 16px;
}

.hero-note,
.quick-card,
.subject-panel,
.day-card,
.library-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 30px rgba(42, 47, 43, 0.08);
}

.hero-note {
  padding: 20px;
}

.hero-note strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-note p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.note-warm {
  background: linear-gradient(180deg, rgba(255, 244, 236, 0.98), rgba(255, 255, 255, 0.82));
}

.note-cool {
  background: linear-gradient(180deg, rgba(236, 247, 243, 0.98), rgba(255, 255, 255, 0.82));
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  margin: 16px 0 24px;
  padding: 14px 16px;
  border-radius: 999px;
  backdrop-filter: blur(12px);
  background: rgba(252, 251, 247, 0.86);
  border: 1px solid rgba(29, 42, 47, 0.08);
  box-shadow: 0 10px 24px rgba(42, 47, 43, 0.07);
}

.top-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
}

.section {
  margin-top: 24px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(255, 252, 247, 0.8);
  border: 1px solid rgba(29, 42, 47, 0.08);
  box-shadow: var(--shadow);
}

.section-highlight {
  background:
    linear-gradient(180deg, rgba(255, 250, 240, 0.95), rgba(255, 255, 255, 0.82));
}

.section-week {
  background:
    linear-gradient(180deg, rgba(240, 247, 244, 0.92), rgba(255, 255, 255, 0.84));
}

.section-miniapp {
  background:
    linear-gradient(135deg, rgba(255, 245, 233, 0.95), rgba(239, 247, 244, 0.92));
}

.section-head {
  margin-bottom: 18px;
}

.section-head h2 {
  margin: 0 0 8px;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.15;
  font-family: "KaiTi", "STKaiti", serif;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.quick-grid,
.day-grid,
.library-grid,
.teaser-grid {
  display: grid;
  gap: 16px;
}

.quick-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.teaser-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.teaser-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(29, 42, 47, 0.08);
  box-shadow: 0 12px 26px rgba(42, 47, 43, 0.08);
}

.teaser-card-accent {
  background: linear-gradient(180deg, rgba(255, 239, 229, 0.98), rgba(255, 255, 255, 0.86));
}

.teaser-card h3 {
  margin: 8px 0 10px;
  font-size: 22px;
}

.teaser-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.teaser-tag {
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(198, 76, 47, 0.12);
  color: var(--accent-deep);
  font-weight: 700;
}

.teaser-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.quick-card {
  padding: 18px;
}

.quick-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.quick-card ul,
.subject-column ul,
.day-card ul,
.library-card ul {
  margin: 0;
  padding-left: 18px;
  line-height: 1.8;
}

.strategy-strip {
  margin-bottom: 18px;
}

.strategy-chip,
.summary-chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  font-size: 14px;
}

.summary-chip-accent {
  background: rgba(198, 76, 47, 0.09);
  color: var(--accent-deep);
}

.subject-tab {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
}

.subject-tab.is-active {
  background: var(--ink);
  color: #fff;
}

.subject-panel {
  margin-top: 16px;
  padding: 24px;
}

.subject-panel-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: 24px;
}

.subject-title {
  margin: 0 0 8px;
  font-size: 30px;
  font-family: "KaiTi", "STKaiti", serif;
}

.subject-summary {
  margin: 0 0 18px;
  line-height: 1.8;
  color: var(--muted);
}

.subject-column h4,
.day-card h3,
.library-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.subject-stack {
  display: grid;
  gap: 14px;
}

.subject-block {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(247, 243, 232, 0.76);
  border: 1px solid rgba(29, 42, 47, 0.06);
}

.day-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.day-card {
  padding: 20px;
}

.day-card h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.day-badge {
  font-size: 12px;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.subject-mini {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed rgba(29, 42, 47, 0.12);
}

.subject-mini:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.subject-mini strong {
  display: block;
  margin-bottom: 8px;
}

.library-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.library-card {
  padding: 18px;
}

.library-card p {
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.75;
}

.library-links {
  display: grid;
  gap: 10px;
}

.library-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  text-decoration: none;
  border: 1px solid rgba(29, 42, 47, 0.08);
}

.library-link span:last-child {
  color: var(--muted);
  font-size: 12px;
}

.mobile-dock {
  display: none;
}

@media (max-width: 980px) {
  .hero,
  .subject-panel-inner,
  .quick-grid,
  .library-grid,
  .teaser-grid,
  .day-grid {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100% - 20px, 1200px);
  }

  .hero,
  .section {
    padding: 22px;
  }

  .top-nav {
    border-radius: 20px;
  }
}

@media (max-width: 720px) {
  body {
    background:
      radial-gradient(circle at top left, rgba(216, 156, 45, 0.18), transparent 34%),
      linear-gradient(180deg, #f3ead7 0%, #fbf8f1 48%, #fffdf9 100%);
  }

  .page-shell {
    width: min(100% - 16px, 1200px);
    margin: 10px auto 92px;
  }

  .hero {
    gap: 18px;
    padding: 22px 18px;
    border-radius: 24px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-text {
    margin: 14px 0 18px;
    font-size: 16px;
  }

  .top-nav {
    display: none;
  }

  .button {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .hero-actions,
  .teaser-actions {
    flex-direction: column;
  }

  .section {
    margin-top: 16px;
    padding: 20px 16px;
    border-radius: 22px;
  }

  .section-head h2 {
    font-size: 30px;
  }

  .quick-card,
  .day-card,
  .library-card,
  .subject-panel,
  .teaser-card {
    border-radius: 18px;
  }

  .day-card {
    padding: 18px;
  }

  .mobile-dock {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: 10px;
    z-index: 30;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    padding: 10px;
    border-radius: 20px;
    background: rgba(255, 252, 247, 0.96);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(29, 42, 47, 0.08);
    box-shadow: 0 14px 30px rgba(42, 47, 43, 0.14);
  }

  .mobile-dock a {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    text-decoration: none;
    color: var(--ink);
    background: rgba(247, 243, 232, 0.9);
    font-size: 13px;
  }

  .mobile-dock-cta {
    background: var(--accent) !important;
    color: #fff !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  .top-nav,
  .mobile-dock,
  .hero-actions,
  #library,
  #quick-sheet,
  #planner {
    display: none !important;
  }

  .hero,
  .section,
  .day-card {
    box-shadow: none;
    border: 1px solid #ddd;
    background: #fff;
  }

  .page-shell {
    width: 100%;
    margin: 0;
  }
}