:root {
  --bg: #f5f1e8;
  --bg-soft: #fcfaf5;
  --surface: rgba(255, 252, 246, 0.9);
  --surface-strong: #fffdf8;
  --line: rgba(34, 63, 108, 0.14);
  --line-strong: rgba(34, 63, 108, 0.24);
  --text: #1d2a36;
  --muted: #5b6777;
  --blue: #2d67a3;
  --blue-deep: #1f4d7b;
  --copper: #b66a37;
  --copper-soft: rgba(182, 106, 55, 0.12);
  --ok: #2a6c55;
  --warn: #9a5d1a;
  --empty: #7a4a3d;
  --shadow: 0 18px 44px rgba(34, 63, 108, 0.08);
  --radius: 8px;
  --radius-lg: 14px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", "PingFang SC", "Microsoft YaHei", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(45, 103, 163, 0.08), transparent 28%),
    radial-gradient(circle at left 20%, rgba(182, 106, 55, 0.08), transparent 24%),
    linear-gradient(180deg, #fcfaf6 0%, var(--bg) 52%, #f8f4ec 100%);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

.page-shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(252, 250, 245, 0.82);
  border-bottom: 1px solid rgba(34, 63, 108, 0.08);
}

.site-header__inner,
.layout {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.site-header__inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 18px;
}

.site-header h1,
.section-heading h2,
.intro h2,
.resource-card__title,
.featured-card__title {
  margin: 0;
  font-weight: 700;
  line-height: 1.2;
}

.site-header h1 {
  font-size: clamp(1.45rem, 2vw, 1.85rem);
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue-deep);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.year-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.intro__action,
.year-nav__link,
.chip,
.status-pill,
.meta-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
  text-decoration: none;
}

.intro__action {
  color: var(--blue-deep);
  background: rgba(255, 255, 255, 0.82);
  transition: 160ms ease;
}

.intro__action--primary {
  color: #fdfaf4;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  border-color: rgba(31, 77, 123, 0.45);
}

.year-nav__link {
  color: var(--muted);
  transition: 160ms ease;
}

.intro__action:hover,
.intro__action:focus-visible,
.year-nav__link:hover,
.year-nav__link:focus-visible,
.resource-card__toggle:hover,
.resource-card__toggle:focus-visible,
.resource-card__action:hover,
.resource-card__action:focus-visible {
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.layout {
  padding: 28px 0 56px;
}

.intro {
  display: grid;
  gap: 20px;
  align-items: start;
}

.intro {
  grid-template-columns: minmax(0, 1.6fr) minmax(220px, 0.8fr);
  padding: 28px 0 22px;
}

.intro__lede,
.featured-card__summary,
.resource-card__summary,
.resource-card__detail,
.archive-empty,
.status-note,
.section-note {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.intro__facts,
.featured-card,
.resource-card {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.intro__facts {
  margin: 0;
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: var(--radius-lg);
}

.intro__facts div {
  display: grid;
  gap: 4px;
}

.intro__facts dt {
  color: var(--muted);
  font-size: 0.88rem;
}

.intro__facts dd {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.section-heading {
  display: grid;
  gap: 4px;
  margin-bottom: 16px;
}

.section-heading h2,
.intro h2 {
  font-size: clamp(1.45rem, 2vw, 2rem);
}

.featured-section,
.archive-section {
  margin-top: 22px;
}

.featured-card {
  display: grid;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius-lg);
}

.featured-card__head,
.resource-card__head,
.archive-year__header,
.resource-card__footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.featured-card__title {
  font-size: 1.45rem;
}

.chip-row,
.resource-card__meta,
.resource-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip,
.meta-chip {
  color: var(--blue-deep);
  background: rgba(45, 103, 163, 0.08);
}

.status-pill {
  font-size: 0.88rem;
  white-space: nowrap;
}

.status-ok {
  color: var(--ok);
  background: rgba(42, 108, 85, 0.1);
}

.status-partial {
  color: var(--warn);
  background: rgba(182, 106, 55, 0.12);
}

.status-empty {
  color: var(--empty);
  background: rgba(122, 74, 61, 0.1);
}

.status-neutral {
  color: var(--blue-deep);
  background: rgba(45, 103, 163, 0.08);
}

.archive-container {
  display: grid;
  gap: 24px;
}

.archive-year {
  display: grid;
  gap: 14px;
}

.archive-year__header {
  align-items: baseline;
  padding-top: 8px;
  border-top: 1px solid rgba(34, 63, 108, 0.12);
}

.archive-year__title {
  font-size: 1.55rem;
}

.archive-year__count {
  color: var(--muted);
}

.archive-year__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.resource-card {
  padding: 18px;
  border-radius: 12px;
}

.resource-card__trigger {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  display: grid;
  gap: 12px;
  cursor: pointer;
}

.resource-card__trigger:focus-visible {
  outline: 2px solid rgba(45, 103, 163, 0.35);
  outline-offset: 6px;
  border-radius: 8px;
}

.resource-card__title {
  font-size: 1.08rem;
}

.resource-card__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 76px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--blue-deep);
  cursor: pointer;
  transition: 160ms ease;
}

.resource-card:hover,
.resource-card.is-expanded {
  border-color: var(--line-strong);
}

.resource-card__body {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(34, 63, 108, 0.1);
}

.resource-card.is-expanded .resource-card__body {
  display: block;
}

.resource-card__footer {
  margin-top: 16px;
  align-items: center;
}

.resource-card__actions {
  justify-content: flex-end;
}

.resource-card__action {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
  text-decoration: none;
  color: var(--text);
  transition: 160ms ease;
}

.resource-card__action--primary {
  background: rgba(45, 103, 163, 0.12);
  color: var(--blue-deep);
}

.archive-empty {
  padding: 24px;
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.5);
}

@media (max-width: 860px) {
  .site-header__inner,
  .intro,
  .featured-card__head,
  .resource-card__head,
  .resource-card__footer,
  .archive-year__header {
    grid-template-columns: 1fr;
    display: grid;
  }

  .intro__actions,
  .year-nav,
  .resource-card__actions {
    justify-content: flex-start;
    text-align: left;
  }

  .archive-year__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header__inner,
  .layout {
    width: min(calc(100% - 20px), var(--max));
  }

  .layout {
    padding-top: 20px;
  }

  .featured-card,
  .resource-card,
  .intro__facts {
    padding: 16px;
  }

  .featured-card__title,
  .archive-year__title {
    font-size: 1.2rem;
  }

  .resource-card__toggle,
  .resource-card__action,
  .intro__action,
  .year-nav__link,
  .chip,
  .status-pill,
  .meta-chip {
    min-height: 36px;
  }
}