:root {
  --ink: #172033;
  --muted: #5c667a;
  --soft: #eef2f6;
  --line: #d9e1ea;
  --paper: #ffffff;
  --wash: #f7f9fb;
  --accent: #0f766e;
  --accent-dark: #0b4f4a;
  --gold: #b88746;
  --danger: #9f3434;
  --shadow: 0 16px 40px rgba(23, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--wash);
  line-height: 1.75;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(217, 225, 234, 0.86);
  background: rgba(247, 249, 251, 0.94);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--ink);
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: 17px;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  color: var(--muted);
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 64px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(34px, 5vw, 58px);
}

h2 {
  font-size: clamp(25px, 3.2vw, 36px);
}

h3 {
  font-size: 20px;
}

.lead {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  line-height: 1.2;
}

.button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.button:hover {
  text-decoration: none;
}

.hero-panel {
  position: relative;
  min-height: 380px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.08), transparent 44%),
    repeating-linear-gradient(90deg, rgba(23, 32, 51, 0.045) 0 1px, transparent 1px 34px),
    var(--paper);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  right: 26px;
  bottom: 24px;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(184, 135, 70, 0.34);
  border-radius: 50%;
}

.panel-title {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.path-map {
  position: relative;
  margin-top: 28px;
  display: grid;
  gap: 12px;
}

.path-node {
  position: relative;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
}

.path-node strong {
  display: block;
  font-size: 17px;
}

.path-node span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 48px 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 24px;
}

.section-head p {
  max-width: 620px;
  margin: 8px 0 0;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 16px;
}

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

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

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.card p {
  color: var(--muted);
}

.card p:last-child {
  margin-bottom: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  display: inline-flex;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: #fff;
  font-size: 13px;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.fact {
  padding: 18px;
  border-top: 3px solid var(--accent);
  background: var(--paper);
  border-radius: 8px;
}

.fact span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.fact strong {
  display: block;
  margin-top: 6px;
  font-size: 18px;
}

.content {
  max-width: 820px;
  padding: 42px 0 64px;
}

.content h1 {
  font-size: clamp(32px, 4vw, 48px);
}

.content h2 {
  margin-top: 42px;
  font-size: 28px;
}

.content h3 {
  margin-top: 26px;
}

.content p,
.content li {
  color: var(--muted);
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 28px;
  background: var(--paper);
}

.content th,
.content td {
  padding: 13px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.content th {
  background: var(--soft);
  color: var(--ink);
}

.notice {
  margin: 28px 0;
  padding: 16px 18px;
  border-left: 4px solid var(--gold);
  background: #fff9ef;
  color: #654516;
}

.question {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.question h2,
.question h3 {
  margin-top: 0;
}

.article-list {
  display: grid;
  gap: 16px;
}

.source-state {
  font-weight: 700;
  color: var(--accent-dark);
}

.source-state.pending {
  color: var(--danger);
}

.site-footer {
  padding: 34px 0 44px;
  border-top: 1px solid var(--line);
  background: var(--paper);
  color: var(--muted);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

.disclaimer {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .hero,
  .grid.three,
  .grid.two,
  .facts,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 38px;
  }

  .hero-panel {
    min-height: 300px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
    gap: 10px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }
}