:root {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --ink: #0f172a;
  --muted: #667085;
  --line: #e4e7ec;
  --accent: #1d4ed8;
  --accent-soft: #dbe6ff;
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --max: 1180px;
  --space-1: 5px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 21px;
  --space-5: 30px;
  --space-6: 42px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "Source Sans 3", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
  border-radius: calc(var(--radius) - 4px);
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.topbar {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  height: 52px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-mark {
  font-size: 1.2rem;
  text-transform: uppercase;
}

.brand-sub {
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links {
  display: flex;
  gap: var(--space-2);
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links a {
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover {
  color: var(--ink);
  border-color: var(--accent);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 1.1rem;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: var(--space-2);
  border-top: 1px solid var(--line);
  background: #fff;
}

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

.nav-mobile.is-open {
  display: flex;
}

.hero {
  padding: var(--space-5) 0 var(--space-4);
  background: var(--bg-soft);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  align-items: center;
}

.kicker {
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.hero h1 {
  font-family: "Noto Serif SC", "Source Serif 4", "Songti SC", serif;
  font-size: clamp(2.2rem, 3vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.lead {
  font-size: 1.02rem;
  color: var(--muted);
  margin-bottom: var(--space-3);
}

.hero-media img {
  width: 100%;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.section {
  padding: var(--space-5) 0;
}

\.section-head {\n  flex-wrap: wrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.section-head h2 {
  font-family: "Noto Serif SC", "Source Serif 4", "Songti SC", serif;
  font-size: 1.6rem;
}

.rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chips a {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
}

.chips a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.news-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 22px;
  color: var(--muted);
  font-size: 0.96rem;
}

.news-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.column-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
}

.column-card {
  padding: var(--space-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.column-card h3 {
  margin-top: var(--space-2);
  font-size: 1.02rem;
}

.column-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 6px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card-body {
  padding: var(--space-2);
}

.meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.card h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.card p {
  color: var(--muted);
  font-size: 0.92rem;
}

.entry {
  background: var(--bg-soft);
}

.entry-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  color: var(--muted);
}

.safety-grid span {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.btn {
  background: var(--accent);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(29, 78, 216, 0.2);
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn.subtle {
  background: var(--accent-soft);
  color: var(--accent);
}

.footer {
  padding: var(--space-4) 0 var(--space-3);
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  color: var(--muted);
}

.footer-grid h3,
.footer-grid h4 {
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-grid a {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
}

.footer-bottom {
  margin-top: var(--space-3);
  color: var(--muted);
  font-size: 0.85rem;
}

.float-chat {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 999;
}

.float-main {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 18px 36px rgba(29, 78, 216, 0.28);
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
  .column-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .entry-grid {
    flex-direction: column;
    align-items: flex-start;
  }
  .safety-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .column-grid,
  .card-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: var(--space-5) 0;
  }
}

\n.section-sub {\n  width: 100%;\n  color: var(--muted);\n  font-size: 0.92rem;\n  margin-top: 6px;\n}\n