:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --border: #e5e7eb;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow {
  width: min(760px, calc(100% - 32px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.logo {
  font-weight: 700;
  font-size: 1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover,
.nav a:focus {
  color: var(--primary);
}

.hero {
  padding: 88px 0 72px;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 40%),
    linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
}

.hero-inner {
  max-width: 760px;
}

.hero-label {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  font-size: 0.85rem;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
}

.hero-desc {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.section {
  padding: 72px 0;
}

.section-alt {
  background: #eef2f7;
}

.section-title {
  margin: 0 0 28px;
  font-size: 1.8rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.info-card,
.business-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.info-card {
  padding: 24px;
}

.info-card h3 {
  margin: 0 0 12px;
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.business-panel {
  padding: 28px;
}

.business-panel ul {
  margin: 0;
  padding-left: 20px;
}

.business-panel li + li {
  margin-top: 10px;
}

.business-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.contact-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  padding: 28px 0 36px;
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-inner a:hover {
  color: var(--primary);
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
  }
}