:root {
  --color-primary: #2f5d8a;
  --color-primary-dark: #24486b;
  --color-accent: #c9a227;
  --color-text: #333333;
  --color-text-light: #777777;
  --color-bg: #faf8f3;
  --color-card-bg: #ffffff;
  --color-border: #e6e0d3;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  background-color: var(--color-card-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-family: Georgia, "STZhongsong", "SimSun", serif;
  font-size: 24px;
  border-radius: 10px;
}

.site-title {
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--color-text);
  line-height: 1.3;
}

.site-slogan {
  font-size: 13px;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  color: var(--color-text);
  font-size: 15px;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom-color: var(--color-accent);
}

.hero {
  background: linear-gradient(180deg, #eef3f8 0%, var(--color-bg) 100%);
  padding: 72px 0;
  text-align: center;
}

.hero h2 {
  font-size: 30px;
  letter-spacing: 3px;
  color: var(--color-primary-dark);
  margin-bottom: 18px;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 30px;
  text-align: justify;
}

.hero-btn {
  display: inline-block;
  padding: 10px 34px;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: 4px;
  font-size: 15px;
  letter-spacing: 2px;
  transition: background-color 0.2s ease;
}

.hero-btn:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  text-decoration: none;
}

.section {
  padding: 64px 0;
}

.section-alt {
  background-color: #f2eee4;
}

.section-title {
  text-align: center;
  font-size: 26px;
  letter-spacing: 3px;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 14px;
  margin-bottom: 36px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: 8px;
  padding: 28px 22px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(47, 93, 138, 0.12);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #eef3f8;
  color: var(--color-primary);
  font-family: Georgia, "STZhongsong", "SimSun", serif;
  font-size: 20px;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-text);
}

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

.section-alt .container p {
  max-width: 720px;
  margin: 0 auto 14px;
  text-align: center;
}

.site-footer {
  background-color: #2c2c2c;
  padding: 28px 0;
  text-align: center;
  font-size: 13px;
}

.beian-info {
  margin-bottom: 8px;
}

.beian-info a {
  color: #aaaaaa;
  margin: 0 6px;
}

.beian-info a:hover {
  color: #ffffff;
  text-decoration: none;
}

.copyright {
  color: #888888;
}