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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.8;
  background: #f8f9fa;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  color: #fff;
  text-align: center;
  padding: 52px 24px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 12px;
}

.logo-icon {
  width: 52px;
  height: 52px;
  background: #e94560;
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.company-name {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 4px;
}

.tagline {
  font-size: 16px;
  letter-spacing: 8px;
  opacity: 0.8;
}

/* ========== Nav ========== */
.nav {
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav .container {
  display: flex;
  gap: 0;
}

.nav a {
  display: block;
  padding: 14px 28px;
  color: #555;
  text-decoration: none;
  font-size: 15px;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: #e94560;
  border-bottom-color: #e94560;
}

/* ========== Hero ========== */
.hero {
  background: #fff;
  padding: 72px 24px;
  text-align: center;
}

.hero h2 {
  font-size: 30px;
  color: #1a1a2e;
  margin-bottom: 16px;
  font-weight: 700;
}

.hero p {
  font-size: 17px;
  color: #666;
  max-width: 640px;
  margin: 0 auto;
}

/* ========== Section common ========== */
.section-title {
  text-align: center;
  font-size: 26px;
  color: #1a1a2e;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 16px;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 52px;
  height: 3px;
  background: #e94560;
  border-radius: 2px;
}

/* ========== About ========== */
.about {
  padding: 72px 24px;
  background: #f8f9fa;
}

.about-text {
  max-width: 780px;
  margin: 0 auto 44px;
  text-align: center;
}

.about-text p {
  color: #555;
  font-size: 15px;
  margin-bottom: 14px;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: #fff;
  text-align: center;
  padding: 36px 24px;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}

.card-icon {
  font-size: 40px;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 18px;
  color: #1a1a2e;
  margin-bottom: 8px;
}

.card p {
  font-size: 14px;
  color: #888;
}

/* ========== Business ========== */
.business {
  padding: 72px 24px;
  background: #fff;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.business-item {
  padding: 32px 24px;
  border-left: 3px solid #e94560;
  background: #fafafa;
  border-radius: 0 8px 8px 0;
  transition: background 0.2s, transform 0.2s;
}

.business-item:hover {
  background: #fff5f5;
  transform: translateX(4px);
}

.business-item h3 {
  font-size: 17px;
  color: #1a1a2e;
  margin-bottom: 10px;
  font-weight: 600;
}

.business-item p {
  font-size: 14px;
  color: #777;
  line-height: 1.7;
}

/* ========== Contact ========== */
.contact {
  padding: 72px 24px;
  background: #f8f9fa;
}

.contact-content {
  max-width: 560px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  padding: 16px 0;
  border-bottom: 1px solid #e8e8e8;
  font-size: 15px;
}

.contact-label {
  color: #888;
  flex-shrink: 0;
  width: 100px;
}

/* ========== Footer ========== */
.footer {
  background: #1a1a2e;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 36px 24px;
  font-size: 14px;
}

.footer p {
  margin-bottom: 6px;
}

.footer .icp a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: 13px;
}

.footer .icp a:hover {
  color: #e94560;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .company-name {
    font-size: 24px;
    letter-spacing: 2px;
  }

  .nav .container {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav a {
    padding: 10px 16px;
    font-size: 14px;
  }

  .hero h2 {
    font-size: 22px;
  }

  .about-cards,
  .business-grid {
    grid-template-columns: 1fr;
  }

  .about-text {
    text-align: left;
  }

  .contact-item {
    flex-direction: column;
  }

  .contact-label {
    width: auto;
    margin-bottom: 4px;
  }
}