:root {
  --ink: #11100d;
  --paper: #fff8e8;
  --paper-2: #fffdf5;
  --muted: #6d6255;
  --blue: #0b63ff;
  --lime: #b9ff23;
  --yellow: #ffe24a;
  --red: #ff3b24;
  --radius: 10px;
  --shadow: 6px 6px 0 var(--ink);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background:
    linear-gradient(90deg, rgba(17, 16, 13, 0.06) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--paper);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

.page-shell {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.page-header,
.page-card,
.page-footer {
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: rgba(255, 253, 245, 0.94);
  box-shadow: var(--shadow);
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 22px;
  padding: 16px 18px;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 3px solid var(--ink);
  border-radius: var(--radius);
  background: var(--lime);
  font-weight: 950;
}

.brand strong {
  display: block;
  font-size: 1.12rem;
}

.brand small {
  color: var(--muted);
  font-weight: 850;
}

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

.page-nav a,
.back-link {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  background: #fff;
  box-shadow: 2px 2px 0 var(--ink);
  font-weight: 950;
  text-decoration: none;
}

.page-nav a[aria-current="page"],
.page-nav a:hover,
.back-link:hover {
  background: var(--lime);
}

.page-card {
  padding: clamp(22px, 4vw, 44px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-weight: 950;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 16px;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 28px 0 10px;
  font-size: 1.35rem;
}

p,
li {
  color: #332a20;
  font-size: 1rem;
  font-weight: 750;
  line-height: 1.85;
}

ul,
ol {
  padding-left: 1.2rem;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 900;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.note-box {
  padding: 16px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: #fff9df;
}

.note-box strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
}

.timeline {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.timeline article {
  padding: 14px 16px;
  border: 2px solid rgba(17, 16, 13, 0.18);
  border-radius: var(--radius);
  background: #fff;
}

.timeline time {
  display: block;
  margin-bottom: 6px;
  color: var(--blue);
  font-weight: 950;
}

.page-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 22px;
  padding: 14px 18px;
}

.page-footer span,
.page-footer a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 850;
  text-decoration: none;
}

.page-footer a:hover {
  color: var(--blue);
  text-decoration: underline;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 980px);
    padding-top: 12px;
  }

  .page-header {
    align-items: stretch;
    flex-direction: column;
  }

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

  .note-grid {
    grid-template-columns: 1fr;
  }
}