:root {
  --primary: #1f5f9e;
  --primary-dark: #164574;
  --primary-light: #e8f1fa;
  --accent: #d9822b;
  --text: #23282d;
  --text-light: #6b7680;
  --bg: #ffffff;
  --bg-alt: #f5f7f9;
  --border: #e2e6ea;
  --shadow: 0 4px 16px rgba(31, 95, 158, 0.08);
  --radius: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  padding-top: 68px;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.35; font-weight: 700; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-title { font-size: 30px; color: var(--text); margin-bottom: 14px; }
.section-subtitle { font-size: 16px; color: var(--text-light); max-width: 760px; margin: 0 auto; }
.grid { display: grid; gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flex { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(31, 95, 158, 0.14); }
.card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; margin-bottom: 18px;
}
.card-title { font-size: 19px; margin-bottom: 10px; color: var(--text); }
.card-text { font-size: 15px; color: var(--text-light); }
.card-body { padding-top: 4px; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 8px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: all .25s; text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  background: rgba(255,255,255,.96); border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
.nav.scrolled { box-shadow: 0 2px 14px rgba(0,0,0,.08); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 20px;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { font-size: 20px; font-weight: 700; color: var(--primary); letter-spacing: .5px; }
.nav-list { display: flex; align-items: center; gap: 30px; }
.nav-link { font-size: 15px; color: var(--text); transition: color .2s; }
.nav-link:hover { color: var(--primary); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 8px; font-size: 20px; padding: 4px 12px; cursor: pointer; color: var(--text);
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.hero {
  background: linear-gradient(160deg, #f0f6fc 0%, #ffffff 65%);
  padding: 96px 0 80px;
}
.hero-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.hero-title { font-size: 42px; margin-bottom: 20px; color: var(--text); }
.hero-subtitle { font-size: 18px; color: var(--text-light); margin-bottom: 34px; }
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; border-top: 1px solid var(--border); padding-top: 36px; }
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 28px; font-weight: 700; color: var(--primary); }
.hero-stat-label { font-size: 14px; color: var(--text-light); }
.timeline { position: relative; padding-left: 32px; border-left: 2px solid var(--border); }
.timeline-item { position: relative; padding-bottom: 30px; }
.timeline-dot {
  position: absolute; left: -41px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--primary); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--primary-light);
}
.timeline-content { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; }
.timeline-date { font-size: 13px; color: var(--accent); font-weight: 600; }
.timeline-title { font-size: 17px; margin: 6px 0 8px; }
.timeline-text { font-size: 14px; color: var(--text-light); }
.news-list { display: grid; gap: 20px; }
.news-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: box-shadow .3s; }
.news-item:hover { box-shadow: var(--shadow); }
.news-title { font-size: 18px; margin-bottom: 8px; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-light); margin-bottom: 10px; }
.news-date { }
.news-category { background: var(--primary-light); color: var(--primary); padding: 2px 10px; border-radius: 20px; font-size: 12px; }
.news-summary { font-size: 15px; color: var(--text-light); }
.news-body { font-size: 15px; color: var(--text-light); margin-top: 12px; }
.news-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.tag { font-size: 12px; color: var(--text-light); border: 1px solid var(--border); border-radius: 20px; padding: 2px 12px; }
.faq-list { display: grid; gap: 16px; max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px; }
.faq-question { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.faq-answer { font-size: 15px; color: var(--text-light); }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; margin-bottom: 8px; font-weight: 600; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 11px 14px; font-size: 15px; color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; background: #fff; font-family: inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-submit {
  display: inline-block; padding: 12px 34px; border-radius: 8px; border: none; cursor: pointer;
  background: var(--primary); color: #fff; font-size: 15px; font-weight: 600;
}
.form-submit:hover { background: var(--primary-dark); }
.form-tip { font-size: 13px; color: var(--text-light); margin-top: 10px; }
.stat-item { text-align: center; }
.stat-number { font-size: 30px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 14px; color: var(--text-light); }
.progress { height: 10px; background: var(--bg-alt); border-radius: 20px; overflow: hidden; margin-top: 10px; }
.progress-fill { height: 100%; background: var(--primary); border-radius: 20px; }
.bar-chart { display: flex; align-items: flex-end; gap: 18px; height: 220px; padding: 0 8px; }
.bar-item { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; height: 100%; }
.bar-fill { width: 100%; background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%); border-radius: 8px 8px 0 0; }
.bar-label { font-size: 13px; color: var(--text-light); margin-top: 10px; }
.badge {
  display: inline-block; font-size: 12px; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 20px; padding: 2px 12px;
}
.customer-card, .case-card, .honor-card, .review-card, .benefit-card, .region-card, .support-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform .3s;
}
.customer-card:hover, .case-card:hover, .honor-card:hover, .review-card:hover,
.benefit-card:hover, .region-card:hover, .support-card:hover { transform: translateY(-4px); }
.partner-logo {
  height: 70px; border: 1px dashed var(--border); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--text-light); background: #fff;
}
.step-list { display: grid; gap: 18px; }
.step-item { display: flex; gap: 18px; align-items: flex-start; }
.step-number {
  flex: 0 0 38px; width: 38px; height: 38px; border-radius: 50%;
  background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.footer { background: #1b2630; color: #b8c2cb; padding: 60px 0 0; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 34px; padding-bottom: 44px; }
.footer-col { }
.footer-title { font-size: 16px; color: #fff; margin-bottom: 16px; }
.footer-link { display: block; font-size: 14px; color: #b8c2cb; margin-bottom: 10px; transition: color .2s; }
.footer-link:hover { color: #fff; }
.footer-info { font-size: 14px; line-height: 2; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0;
  font-size: 13px; color: #8b96a0; text-align: center;
}
@media (max-width: 1200px) {
  .container { max-width: 1000px; }
}
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  body { padding-top: 62px; }
  .section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 16px; }
  .section-title { font-size: 24px; }
  .nav-toggle { display: block; }
  .nav-list {
    display: none; position: absolute; top: 62px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0;
    border-bottom: 1px solid var(--border); padding: 10px 20px;
  }
  .nav-list.open { display: flex; }
  .nav-list .nav-link { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-cta .btn { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 25px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .hero-stat-num { font-size: 22px; }
  .card { padding: 22px; }
  .footer-inner { grid-template-columns: 1fr; }
}