:root {
  --bg: #f6f9ff;
  --card: #ffffff;
  --text: #0b1a3a;
  --muted: #5b6b8a;
  --primary: #2f6bff;
  --primary-dark: #1c4ed6;
  --border: #e3e9f5;
  --shadow: 0 16px 40px rgba(15, 35, 90, 0.12);
  --radius: 20px;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-weight: 500;
  color: var(--muted);
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 10px 20px rgba(47, 107, 255, 0.25);
}

.btn-outline {
  border-color: var(--border);
  background: white;
  color: var(--text);
}

.btn:hover {
  transform: translateY(-1px);
}

.hero {
  padding: 72px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(32px, 4vw, 46px);
  margin-bottom: 16px;
}

.hero p {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.badges {
  display: flex;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.badge {
  background: #eaf1ff;
  color: #2f6bff;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.section {
  padding: 64px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: clamp(26px, 3.2vw, 36px);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card h3 {
  margin: 14px 0 10px;
}

.card p {
  color: var(--muted);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}

.stat {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
}

.stat h3 {
  font-size: 28px;
  color: var(--primary);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.timeline-item span {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #eaf1ff;
  display: grid;
  place-items: center;
  color: var(--primary);
  font-weight: 700;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.case {
  padding: 20px;
  border-radius: 18px;
  background: #0b1a3a;
  color: #f8fbff;
  box-shadow: var(--shadow);
}

.case p {
  color: rgba(248, 251, 255, 0.7);
}

.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.price-card {
  background: white;
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--border);
  display: grid;
  gap: 12px;
}

.price-card h3 {
  font-size: 20px;
}

.price {
  font-size: 32px;
  color: var(--primary);
  font-weight: 700;
}

.price-list {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.faq {
  display: grid;
  gap: 16px;
}

.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
}

.faq-item h4 {
  margin-bottom: 8px;
}

.contact {
  background: #0b1a3a;
  color: white;
  border-radius: 24px;
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.contact form {
  display: grid;
  gap: 12px;
}

input, textarea {
  padding: 12px 14px;
  border-radius: 12px;
  border: none;
  background: rgba(255, 255, 255, 0.12);
  color: white;
}

input::placeholder, textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

footer {
  padding: 30px 0 50px;
  color: var(--muted);
  text-align: center;
}

.mobile-toggle {
  display: none;
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 64px;
    right: 4vw;
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-toggle {
    display: inline-flex;
    border: 1px solid var(--border);
    background: white;
    border-radius: 999px;
    padding: 8px 12px;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}