:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #eef2ff;
  --accent: #f59e0b;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f7f8fc;
  --border: #e5e7eb;
  --shadow: 0 4px 18px rgba(31, 41, 55, 0.08);
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { 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; max-width: 780px; margin: 0 auto 48px; }
.section-title { font-size: 2rem; color: var(--text); margin-bottom: 14px; }
.section-subtitle { color: var(--text-light); font-size: 1.05rem; }

.grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { display: grid; gap: 24px; grid-template-columns: repeat(2, 1fr); }
.grid-3 { display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); }
.grid-4 { display: grid; gap: 24px; grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; align-items: center; gap: 12px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(31,41,55,.14); }
.card-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.card-title { font-size: 1.2rem; margin-bottom: 10px; color: var(--text); }
.card-text { color: var(--text-light); font-size: .96rem; }
.card-body { margin-top: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .25s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.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: .88rem; }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.nav.scrolled { box-shadow: 0 4px 16px rgba(31,41,55,.08); border-bottom-color: var(--border); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.nav-logo { font-size: 1.25rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.nav-list { display: flex; align-items: center; gap: 26px; }
.nav-link { font-size: .95rem; color: var(--text); font-weight: 500; transition: color .2s; position: relative; }
.nav-link:hover { color: var(--primary); }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  font-size: 1.6rem; color: var(--text); line-height: 1;
}
.nav-cta { padding: 9px 22px; font-size: .9rem; }

.hero {
  padding: 150px 0 90px;
  background: linear-gradient(160deg, #eef2ff 0%, #ffffff 55%, #f7f8fc 100%);
  position: relative;
  overflow: hidden;
}
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; text-align: center; }
.hero-title { font-size: 2.9rem; letter-spacing: -.5px; margin-bottom: 20px; color: var(--text); }
.hero-title span { color: var(--primary); }
.hero-subtitle { font-size: 1.15rem; color: var(--text-light); max-width: 720px; margin: 0 auto 34px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 880px; margin: 0 auto; }
.hero-stat {
  background: #fff; border-radius: var(--radius); padding: 22px 14px;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.hero-stat-num { font-size: 1.7rem; font-weight: 800; color: var(--primary); display: block; }
.hero-stat-label { font-size: .86rem; color: var(--text-light); }

.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.timeline-item { position: relative; padding-bottom: 30px; }
.timeline-dot {
  position: absolute; left: -28px; top: 5px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--primary); border: 3px solid var(--primary-light);
}
.timeline-content { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; }
.timeline-date { font-size: .82rem; color: var(--accent); font-weight: 600; margin-bottom: 4px; }
.timeline-title { font-size: 1.05rem; margin-bottom: 6px; }
.timeline-text { color: var(--text-light); font-size: .92rem; }

.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.news-title { font-size: 1.12rem; margin-bottom: 8px; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: .84rem; color: var(--text-light); margin-bottom: 10px; }
.news-date { color: var(--text-light); }
.news-category { background: var(--primary-light); color: var(--primary); padding: 2px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; }
.news-summary { color: var(--text-light); font-size: .94rem; }
.news-body { color: var(--text); font-size: .94rem; margin-top: 10px; }
.news-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tag { background: var(--bg-alt); border: 1px solid var(--border); color: var(--text-light); font-size: .78rem; padding: 3px 12px; border-radius: 999px; }

.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; box-shadow: var(--shadow); }
.faq-question { font-weight: 700; font-size: 1.02rem; margin-bottom: 8px; color: var(--text); }
.faq-answer { color: var(--text-light); font-size: .94rem; }

.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 600; margin-bottom: 8px; font-size: .92rem; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border);
  border-radius: 10px; font-size: .95rem; color: var(--text); background: #fff;
  font-family: inherit; outline: none; transition: border-color .2s, box-shadow .2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-submit {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 36px; border: none; border-radius: 999px;
  background: var(--primary); color: #fff; font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: background .25s, transform .25s;
}
.form-submit:hover { background: var(--primary-dark); transform: translateY(-2px); }
.form-tip { font-size: .82rem; color: var(--text-light); margin-top: 10px; }

.stat-item { text-align: center; padding: 20px; }
.stat-number { font-size: 2rem; font-weight: 800; color: var(--primary); display: block; }
.stat-label { font-size: .88rem; color: var(--text-light); }
.progress { height: 10px; background: var(--bg-alt); border-radius: 999px; overflow: hidden; margin: 10px 0 6px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--primary-dark)); border-radius: 999px; }
.bar-chart { display: flex; align-items: flex-end; gap: 16px; height: 200px; padding: 10px 0; }
.bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.bar-fill { width: 100%; background: linear-gradient(180deg, var(--primary), var(--primary-dark)); border-radius: 8px 8px 0 0; }
.bar-label { font-size: .8rem; color: var(--text-light); margin-top: 8px; }

.badge { display: inline-block; background: var(--accent); color: #fff; font-size: .76rem; font-weight: 700; padding: 3px 12px; border-radius: 999px; }
.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, 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: 78px; background: var(--bg-alt); border: 1px dashed var(--border);
  border-radius: var(--radius); color: var(--text-light); font-size: .88rem;
}
.step-list { display: flex; flex-direction: column; gap: 20px; counter-reset: step; }
.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; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.footer { background: #1e2233; color: #cbd0dd; padding: 64px 0 0; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 32px; }
.footer-col { min-width: 0; }
.footer-title { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-link { display: block; color: #cbd0dd; font-size: .9rem; margin-bottom: 10px; transition: color .2s; }
.footer-link:hover { color: #fff; }
.footer-info { color: #cbd0dd; font-size: .9rem; line-height: 1.9; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 48px;
  padding: 22px 20px; text-align: center; font-size: .84rem; color: #9aa2b5;
}
.footer-bottom a { color: #9aa2b5; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 1200px) {
  .hero-title { font-size: 2.6rem; }
}
@media (max-width: 992px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .nav-list {
    position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0;
    padding: 10px 20px; border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 20px rgba(31,41,55,.08);
    display: none;
  }
  .nav-list.open { display: flex; }
  .nav-link { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .hero { padding: 120px 0 64px; }
  .hero-title { font-size: 2.1rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.6rem; }
  .grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 1.75rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; }
  .card { padding: 22px; }
}