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

:root {
  --primary: #1a5276;
  --primary-light: #2980b9;
  --primary-dark: #0e2f44;
  --accent: #27ae60;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --bg: #f8f9fa;
  --white: #ffffff;
  --border: #e0e6ed;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --radius: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary);
}

/* ── Header ── */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary-light);
}

/* ── Hero ── */
.hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: var(--white);
  padding: 72px 24px 64px;
  text-align: center;
}

.hero h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero p {
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
  opacity: 0.9;
  line-height: 1.8;
}

.hero p + p {
  margin-top: 14px;
}

/* ── Section ── */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
}

/* ── Feature Cards ── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 22px;
  color: var(--white);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ── Info Block ── */
.info-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.info-block h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.info-block p,
.info-block li {
  font-size: 14px;
  color: var(--text);
  line-height: 1.8;
}

.info-block ul {
  padding-left: 20px;
  margin-top: 8px;
}

.info-block li {
  margin-bottom: 6px;
}

/* ── Notice Banner ── */
.notice {
  background: #fef9e7;
  border-left: 4px solid #f1c40f;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 24px;
  margin-top: 24px;
  font-size: 14px;
  color: #7d6608;
}

/* ── Table ── */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.info-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--primary);
  width: 160px;
}

.info-table td {
  color: var(--text);
}

/* ── Footer ── */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 32px 24px;
  font-size: 13px;
  line-height: 2;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.85);
}

.site-footer a:hover {
  color: var(--white);
}

.footer-links {
  margin-bottom: 16px;
}

.footer-links a {
  margin: 0 12px;
}

.icp {
  margin-top: 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

.icp a {
  color: rgba(255, 255, 255, 0.6);
}

/* ── Page Content ── */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  padding: 48px 24px;
  text-align: center;
}

.page-hero h1 {
  font-size: 28px;
  font-weight: 700;
}

.page-hero p {
  margin-top: 14px;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.75;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.92;
}

.page-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px;
}

.page-content h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin: 32px 0 12px;
}

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

.page-content p {
  margin-bottom: 12px;
  line-height: 1.8;
  font-size: 14px;
}

.page-content ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.page-content li {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.8;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    height: auto;
    padding: 12px 16px;
    gap: 8px;
  }

  .nav-links {
    gap: 16px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero p {
    font-size: 14px;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .info-table th {
    width: 120px;
  }
}