:root {
  --primary: #4a9e6b;
  --primary-dark: #357a4f;
  --primary-light: #e8f5ed;
  --accent: #f0a04b;
  --text: #2c3e35;
  --text-light: #6b7d74;
  --bg: #ffffff;
  --bg-alt: #f7faf8;
  --border: #e0e8e3;
  --shadow: 0 2px 12px rgba(74, 158, 107, 0.08);
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.3; }
.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: 50px; }
.section-title { font-size: 32px; font-weight: 700; color: var(--text); margin-bottom: 14px; }
.section-subtitle { font-size: 16px; color: var(--text-light); max-width: 680px; 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; gap: 16px; align-items: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
  border: 1px solid var(--border);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(74, 158, 107, 0.14); }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; margin-bottom: 18px;
}
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text); }
.card-text { font-size: 15px; color: var(--text-light); }
.card-body { margin-top: 12px; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 8px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 2px solid transparent; transition: all .3s; text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary-dark); 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: 1000;
  background: rgba(255,255,255,0.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border); transition: box-shadow .3s;
}
.nav.scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.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: 22px; font-weight: 700; color: var(--primary-dark); display: flex; align-items: center; gap: 8px; }
.nav-logo span { color: var(--accent); }
.nav-list { display: flex; gap: 28px; }
.nav-link { font-size: 15px; color: var(--text); transition: color .3s; font-weight: 500; }
.nav-link:hover { color: var(--primary); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border: none; background: transparent;
  cursor: pointer; flex-direction: column; justify-content: center; gap: 5px; align-items: center;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); }
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #f0faf4 0%, #e8f5ed 50%, #f7faf8 100%);
}
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; text-align: center; }
.hero-title { font-size: 44px; font-weight: 800; color: var(--text); margin-bottom: 20px; }
.hero-title span { color: var(--primary); }
.hero-subtitle { font-size: 18px; color: var(--text-light); max-width: 720px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 56px; flex-wrap: wrap; }
.hero-stats { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat-num { font-size: 34px; font-weight: 800; color: var(--primary-dark); }
.hero-stat-label { font-size: 14px; color: var(--text-light); margin-top: 4px; }
.timeline { position: relative; padding-left: 30px; }
.timeline-item { position: relative; padding-bottom: 30px; }
.timeline-dot {
  position: absolute; left: -30px; top: 4px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--primary); border: 3px solid var(--primary-light);
}
.timeline-content { padding-left: 8px; }
.timeline-date { font-size: 13px; color: var(--accent); font-weight: 600; }
.timeline-title { font-size: 17px; font-weight: 600; margin: 4px 0 6px; }
.timeline-text { font-size: 14px; color: var(--text-light); }
.news-list { display: flex; flex-direction: column; gap: 24px; }
.news-item { background: #fff; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.news-title { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.news-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; font-size: 13px; }
.news-date { color: var(--text-light); }
.news-category { background: var(--primary-light); color: var(--primary-dark); padding: 2px 10px; border-radius: 20px; font-weight: 600; }
.news-summary { font-size: 15px; color: var(--text-light); }
.news-body { font-size: 15px; color: var(--text); margin-top: 10px; }
.news-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.tag { background: var(--bg-alt); border: 1px solid var(--border); color: var(--text-light); padding: 2px 12px; border-radius: 20px; font-size: 13px; }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: #fff; border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.faq-question { font-size: 17px; font-weight: 600; margin-bottom: 10px; color: var(--primary-dark); }
.faq-answer { font-size: 15px; color: var(--text-light); }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 15px; font-family: inherit; background: #fff; color: var(--text);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-submit { width: 100%; }
.form-tip { font-size: 13px; color: var(--text-light); margin-top: 8px; }
.stat-item { text-align: center; }
.stat-number { font-size: 32px; font-weight: 800; color: var(--primary-dark); }
.stat-label { font-size: 14px; color: var(--text-light); margin-top: 6px; }
.progress { height: 10px; background: var(--border); border-radius: 20px; overflow: hidden; margin-top: 8px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 20px; }
.bar-chart { display: flex; align-items: flex-end; gap: 20px; height: 200px; padding: 20px 0; }
.bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; height: 100%; justify-content: flex-end; }
.bar-fill { width: 100%; max-width: 48px; background: linear-gradient(180deg, var(--primary), var(--primary-dark)); border-radius: 6px 6px 0 0; }
.bar-label { font-size: 13px; color: var(--text-light); margin-top: 8px; }
.badge { display: inline-block; background: var(--accent); color: #fff; font-size: 12px; padding: 2px 10px; border-radius: 20px; font-weight: 600; }
.customer-card, .case-card, .honor-card, .review-card, .benefit-card, .region-card, .support-card {
  background: #fff; border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow); border: 1px solid var(--border); transition: transform .3s, box-shadow .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 {
  display: flex; align-items: center; justify-content: center;
  height: 72px; background: var(--bg-alt); border: 1px dashed var(--border);
  border-radius: var(--radius); color: var(--text-light); font-size: 14px;
}
.step-list { display: flex; flex-direction: column; gap: 20px; }
.step-item { display: flex; gap: 16px; align-items: flex-start; }
.step-number {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%;
  background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px;
}
.footer { background: #1f2d26; color: #c8d4cd; padding: 60px 0 0; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.footer-link { font-size: 14px; color: #a8b8ae; transition: color .3s; }
.footer-link:hover { color: var(--primary-light); }
.footer-info { font-size: 14px; color: #a8b8ae; line-height: 1.9; }
.footer-bottom {
  max-width: 1200px; margin: 40px auto 0; padding: 20px;
  border-top: 1px solid #33443a; text-align: center; font-size: 13px; color: #8a9a90;
}
@media (max-width: 1200px) {
  .footer-inner { grid-template-columns: 1.5fr 1fr 1fr; }
}
@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .nav-list { gap: 18px; }
  .hero-title { font-size: 36px; }
  .footer-inner { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .nav-list {
    position: fixed; top: 68px; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; padding: 12px 0; border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 16px rgba(0,0,0,0.06); display: none;
  }
  .nav-list.active { display: flex; }
  .nav-link { padding: 12px 24px; display: block; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .section { padding: 60px 0; }
  .section-title { font-size: 26px; }
  .hero { padding: 110px 0 60px; }
  .hero-title { font-size: 30px; }
  .hero-stats { gap: 32px; }
  .hero-stat-num { font-size: 26px; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero-title { font-size: 26px; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .footer-inner { grid-template-columns: 1fr; }
  .bar-chart { gap: 10px; }
}