:root {
  --bg: #f3eadc;
  --bg-strong: #efe2cf;
  --ink: #1b1916;
  --ink-soft: #4a443d;
  --accent: #0f766e;
  --accent-strong: #0b4f5a;
  --accent-soft: rgba(15, 118, 110, 0.14);
  --panel: rgba(255, 250, 244, 0.82);
  --line: rgba(27, 25, 22, 0.14);
  --shadow: 0 22px 50px rgba(40, 31, 19, 0.12);
  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.55), transparent 34%),
    linear-gradient(135deg, #f8f2e8 0%, #efe2cf 48%, #e7d5bb 100%);
  line-height: 1.75;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 25, 22, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 25, 22, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  opacity: 0.36;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

code {
  font-size: 0.92em;
  background: rgba(27, 25, 22, 0.08);
  padding: 0.12rem 0.36rem;
  border-radius: 0.38rem;
}

pre {
  overflow-x: auto;
  padding: 1rem;
  border-radius: 1rem;
  background: #1c1e22;
  color: #f3f2ef;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.site-shell {
  position: relative;
  max-width: 1220px;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.site-header {
  margin-bottom: 28px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 249, 241, 0.78);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.header-grid {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.tagline {
  max-width: 38rem;
  margin: 10px 0 0;
  color: var(--ink-soft);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nav a {
  padding: 0.68rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.96rem;
  background: rgba(255, 255, 255, 0.38);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.nav a:hover,
.nav a.active {
  text-decoration: none;
  border-color: rgba(15, 118, 110, 0.4);
  background: rgba(15, 118, 110, 0.12);
  transform: translateY(-1px);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 0.9fr);
  gap: 22px;
}

.content-panel,
.side-panel {
  display: grid;
  gap: 20px;
}

.hero,
.section-block,
.article-shell,
.panel-group {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.95fr);
  gap: 18px;
  overflow: hidden;
}

.hero-copy h1,
.article-shell h1,
.panel-group h2,
.section-header h2,
.hero-status h2 {
  margin-top: 0;
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  margin-bottom: 1rem;
}

.hero-status {
  padding: 20px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(235, 249, 247, 0.86)),
    var(--accent-soft);
}

.status-label {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.56);
}

.card h3 {
  margin: 0.25rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.25;
}

.card p {
  margin: 0;
}

.card-meta {
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-header {
  margin-bottom: 1.6rem;
}

.article-summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.article-body h2,
.article-body h3 {
  margin-top: 1.8rem;
  font-family: var(--font-display);
}

.article-body blockquote {
  margin: 1.2rem 0;
  padding: 0.8rem 1rem;
  border-left: 4px solid rgba(15, 118, 110, 0.45);
  border-radius: 0 14px 14px 0;
  background: rgba(15, 118, 110, 0.08);
}

.article-body ul,
.article-body ol,
.hero-status ul {
  margin: 0.7rem 0 0;
  padding-left: 1.2rem;
}

.panel-group h2 {
  margin-bottom: 1rem;
  font-size: 1.35rem;
}

.empty {
  color: var(--ink-soft);
}

.site-footer {
  margin-top: 22px;
  padding: 18px 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 250, 244, 0.7);
  color: var(--ink-soft);
}

@media (max-width: 960px) {
  .layout,
  .hero {
    grid-template-columns: 1fr;
  }

  .header-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-shell {
    padding: 18px 14px 36px;
  }

  .site-header,
  .hero,
  .section-block,
  .article-shell,
  .panel-group,
  .site-footer {
    padding: 18px;
    border-radius: 22px;
  }

  .nav {
    width: 100%;
  }

  .nav a {
    flex: 1 1 auto;
    text-align: center;
  }
}