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

:root {
  --navy: #0a3448;
  --navy-deep: #062433;
  --accent: #1eb8c8;
  --accent-soft: #9de8ef;
  --text: #1f2933;
  --muted: #5b6773;
  --bg: #f3f7f8;
  --white: #ffffff;
  --line: #dce7ea;
  --max: 1120px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

.container {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 36, 51, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(30, 184, 200, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border: 2px solid var(--accent);
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text strong {
  font-size: 16px;
  letter-spacing: 1px;
}

.logo-text span {
  font-size: 12px;
  color: #b8c9d3;
}

nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

nav a {
  color: #d7dee8;
  padding: 8px 14px;
  font-size: 14px;
  border-bottom: 2px solid transparent;
}

nav a:hover,
nav a.active {
  color: var(--accent-soft);
  border-bottom-color: var(--accent);
}

.hero {
  background:
    linear-gradient(115deg, rgba(6, 36, 51, 0.94) 16%, rgba(10, 52, 72, 0.78) 58%, rgba(10, 52, 72, 0.52)),
    radial-gradient(circle at 82% 18%, rgba(30, 184, 200, 0.22), transparent 34%),
    linear-gradient(180deg, #0a3448, #12586a);
  color: var(--white);
  padding: 88px 0 76px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -80px -120px auto;
  width: 380px;
  height: 380px;
  border: 40px solid rgba(30, 184, 200, 0.08);
  border-radius: 50%;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-kicker {
  color: var(--accent-soft);
  letter-spacing: 4px;
  font-size: 13px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero p {
  max-width: 640px;
  color: #d5e4ea;
  font-size: 16px;
  margin-bottom: 32px;
}

.hero-panel {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(157, 232, 239, 0.2);
  padding: 26px 24px;
}

.hero-panel h3 {
  color: var(--accent-soft);
  font-size: 15px;
  margin-bottom: 14px;
}

.hero-panel li {
  list-style: none;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: #e4eef2;
}

.hero-panel li:last-child {
  border-bottom: 0;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  background: var(--accent);
  color: var(--navy-deep);
  font-weight: 700;
  font-size: 14px;
}

.btn.ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
  margin-left: 10px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: -36px;
  position: relative;
  z-index: 2;
}

.stat-card {
  background: var(--white);
  padding: 22px 20px;
  box-shadow: 0 10px 28px rgba(10, 52, 72, 0.08);
}

.stat-card b {
  display: block;
  font-size: 24px;
  color: var(--navy);
}

.stat-card span {
  color: var(--muted);
  font-size: 13px;
}

.section {
  padding: 72px 0;
}

.section.alt {
  background: var(--white);
}

.section-title {
  margin-bottom: 28px;
}

.section-title h2 {
  font-size: 28px;
  color: var(--navy);
  margin-bottom: 8px;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: start;
}

.prose p {
  margin-bottom: 14px;
  color: #334155;
}

.info-box {
  background: var(--navy);
  color: var(--white);
  padding: 28px;
}

.info-box h3 {
  color: var(--accent-soft);
  margin-bottom: 16px;
  font-size: 16px;
}

.info-box li {
  list-style: none;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

.info-box span {
  color: #c5d0dd;
  flex-shrink: 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: var(--white);
  padding: 26px 22px;
  border-top: 3px solid var(--accent);
  box-shadow: 0 8px 22px rgba(10, 52, 72, 0.05);
}

.card h3 {
  color: var(--navy);
  margin-bottom: 10px;
  font-size: 18px;
}

.card p {
  color: var(--muted);
  font-size: 14px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.step {
  background: #f8fafc;
  padding: 22px 18px;
  border: 1px solid var(--line);
}

.step em {
  display: block;
  color: var(--accent);
  font-style: normal;
  font-weight: 700;
  margin-bottom: 8px;
}

.step h3 {
  color: var(--navy);
  margin-bottom: 8px;
  font-size: 16px;
}

.step p {
  color: var(--muted);
  font-size: 14px;
}

.name-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.name-card {
  background: var(--white);
  padding: 28px 24px;
  border: 1px solid var(--line);
}

.name-card .label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 10px;
}

.name-card.current {
  background: var(--navy);
  color: var(--white);
  border-color: transparent;
}

.name-card.current .label {
  color: var(--accent-soft);
}

.name-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.name-card p {
  font-size: 14px;
  color: var(--muted);
}

.name-card.current p {
  color: #c5d0dd;
}

.page-banner {
  background: linear-gradient(120deg, var(--navy-deep), #12586a);
  color: var(--white);
  padding: 56px 0;
}

.page-banner h1 {
  font-size: 32px;
  margin-bottom: 8px;
}

.page-banner p {
  color: #c9d4e3;
}

.content-card {
  background: var(--white);
  padding: 36px;
  box-shadow: 0 8px 24px rgba(10, 52, 72, 0.05);
}

.content-card h2,
.content-card h3 {
  color: var(--navy);
  margin: 22px 0 10px;
}

.content-card h2:first-child {
  margin-top: 0;
}

.content-card p,
.content-card li {
  color: #334155;
  margin-bottom: 10px;
}

.content-card ul {
  padding-left: 18px;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 22px;
}

.table th,
.table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.table th {
  width: 160px;
  color: var(--muted);
  font-weight: 500;
  background: #f8fafc;
}

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

.contact-item {
  background: var(--white);
  padding: 24px;
  border-left: 4px solid var(--accent);
}

.contact-item h3 {
  color: var(--navy);
  margin-bottom: 8px;
}

.contact-item p {
  color: #334155;
}

.note {
  font-size: 13px;
  color: var(--muted);
}

.footer {
  background: var(--navy-deep);
  color: #c5d0dd;
  padding: 36px 0 22px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer a {
  color: var(--accent-soft);
}

.footer-copy {
  padding-top: 16px;
  font-size: 13px;
  text-align: center;
}

@media (max-width: 900px) {
  .stats,
  .cards,
  .steps,
  .grid-2,
  .contact-grid,
  .hero-inner,
  .name-grid,
  .footer-top {
    grid-template-columns: 1fr;
    display: grid;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
  }

  .btn.ghost {
    margin-left: 0;
    margin-top: 10px;
  }

  .table th {
    width: 110px;
  }
}