:root {
  --bg: #f3fbff;
  --bg-alt: #e6f6ff;
  --paper: #ffffff;
  --ink: #0f172a;
  --muted: #334155;
  --brand: #0f766e;
  --brand-2: #0369a1;
  --line: #bfdbfe;
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 20% 8%, #d6f8ff, transparent 40%),
    radial-gradient(circle at 82% 0%, #e0ecff, transparent 36%),
    linear-gradient(180deg, var(--bg), #ffffff 70%);
  line-height: 1.7;
}

a {
  color: var(--brand-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(3, 105, 161, 0.1);
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand img {
  width: 172px;
  height: auto;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 10px;
  width: 44px;
  height: 44px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.main-nav a {
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--ink);
}

.main-nav a.active,
.main-nav a:hover {
  background: linear-gradient(120deg, #cffafe, #dbeafe);
  text-decoration: none;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
  margin-bottom: 12px;
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin: 0 0 12px;
}

h1 {
  font-size: clamp(32px, 5vw, 52px);
}

h2 {
  font-size: clamp(26px, 4vw, 36px);
}

.lead {
  font-size: 18px;
  color: var(--muted);
  margin: 14px 0 24px;
}

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

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
  color: #ffffff;
  box-shadow: 0 10px 20px rgba(2, 132, 199, 0.25);
}

.btn-outline {
  background: #ffffff;
  border: 1px solid #93c5fd;
  color: #0c4a6e;
}

.hero-art {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: perspective(900px) rotateY(-5deg);
  animation: floatCard 4s ease-in-out infinite;
}

@keyframes floatCard {
  0%,
  100% {
    transform: perspective(900px) rotateY(-5deg) translateY(0);
  }
  50% {
    transform: perspective(900px) rotateY(-4deg) translateY(-8px);
  }
}

.section {
  padding: 56px 0;
}

.section.alt {
  background: linear-gradient(180deg, var(--bg-alt), #ffffff);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.card {
  background: var(--paper);
  border: 1px solid #dbeafe;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.icon {
  width: 54px;
  height: 54px;
  margin-bottom: 12px;
}

.stat {
  text-align: center;
  padding: 24px 12px;
}

.stat strong {
  display: block;
  font-size: 36px;
  color: var(--brand-2);
  margin-bottom: 4px;
}

.timeline {
  border-left: 3px solid #a5f3fc;
  padding-left: 16px;
}

.timeline .item {
  margin-bottom: 18px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid #dbeafe;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
}

th,
td {
  text-align: left;
  padding: 14px;
  border-bottom: 1px solid #e2e8f0;
}

th {
  background: #f0f9ff;
}

.notice {
  font-size: 14px;
  color: #334155;
  border-left: 4px solid #0ea5e9;
  background: #eff6ff;
  padding: 12px;
  border-radius: 8px;
}

.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  margin-top: 36px;
  padding-top: 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 20px;
}

.site-footer a {
  color: #93c5fd;
}

.footer-bottom {
  margin-top: 20px;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  padding: 14px 0 22px;
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: all 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .grid-3,
  .grid-2,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-art {
    transform: none;
    animation: none;
  }

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    background: #ffffff;
    border: 1px solid #dbeafe;
    border-radius: 12px;
    padding: 8px;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-wrap {
    padding: 12px 0;
    flex-wrap: wrap;
  }
}