:root {
  --primary: #ff9f43;
  --primary-dark: #e8822a;
  --secondary: #54a0ff;
  --bg: #f7f5f2;
  --white: #ffffff;
  --text: #191919;
  --text-mid: #666666;
  --text-muted: #999999;
  --border: #ede9e4;
  --warm: #fff7ed;
  --shadow: 0 8px 24px rgba(44, 42, 40, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--secondary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.site-header-inner,
.site-footer-inner,
.section-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

.nav-links a {
  color: var(--text-mid);
}

.hero {
  padding: 56px 0 40px;
}

.hero-card {
  background: linear-gradient(135deg, var(--warm), var(--white));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  box-shadow: var(--shadow);
}

.hero-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 159, 67, 0.15);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.25;
}

.hero p {
  margin: 0;
  max-width: 640px;
  color: var(--text-mid);
  font-size: 17px;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: default;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.btn-ghost {
  background: var(--white);
  color: var(--text);
  border: 1px solid var(--border);
}

.section {
  padding: 24px 0 48px;
}

.section-title {
  margin: 0 0 8px;
  font-size: 24px;
}

.section-desc {
  margin: 0 0 24px;
  color: var(--text-mid);
  font-size: 15px;
}

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

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px 20px;
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.feature-card p {
  margin: 0;
  color: var(--text-mid);
  font-size: 14px;
}

.info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.info-list {
  margin: 0;
  padding-left: 18px;
  color: var(--text-mid);
}

.info-list li + li {
  margin-top: 8px;
}

.site-footer {
  margin-top: 24px;
  padding: 28px 0 36px;
  border-top: 1px solid var(--border);
  background: var(--white);
  color: var(--text-mid);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
}

.legal-page {
  padding: 32px 0 48px;
}

.legal-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.legal-card h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.legal-meta {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 20px;
}

.legal-card h2 {
  margin: 28px 0 10px;
  font-size: 18px;
}

.legal-card p {
  margin: 0 0 12px;
  color: var(--text-mid);
  font-size: 14px;
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-card {
    padding: 28px 20px;
  }
}