:root {
  --bg: #0a0a12;
  --bg-card: #12121f;
  --bg-elevated: #1a1a2e;
  --text: #e8e8f0;
  --text-muted: #9898b0;
  --accent: #7c5cff;
  --accent-light: #a78bfa;
  --accent-glow: rgba(124, 92, 255, 0.35);
  --border: rgba(255, 255, 255, 0.08);
  --gradient: linear-gradient(135deg, #7c5cff 0%, #e040fb 50%, #ff6b9d 100%);
  --radius: 12px;
  --max-w: 1100px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-light); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.85; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--bg-elevated);
  opacity: 1;
}

.lang-switch {
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  transition: all 0.2s;
}

.lang-switch:hover { border-color: var(--accent); color: var(--text); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ── Hero ── */
.hero {
  padding: 80px 24px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px var(--accent-glow); opacity: 1; }

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

.btn-outline:hover { border-color: var(--accent); opacity: 1; }

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

/* ── Sections ── */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--text-muted);
  margin-bottom: 36px;
}

/* ── Feature Grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: rgba(124, 92, 255, 0.3); }

.feature-card .icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ── Company ── */
.company-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.info-item label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-item span { font-size: 0.95rem; }

/* ── Permissions Table ── */
.perm-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.perm-table th,
.perm-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.perm-table th { color: var(--text-muted); font-weight: 500; }
.perm-table td:last-child { color: var(--text-muted); }

/* ── Legal Pages ── */
.legal-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.legal-page h1 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.legal-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.legal-page h2 {
  font-size: 1.15rem;
  margin: 32px 0 12px;
  color: var(--accent-light);
}

.legal-page p,
.legal-page li {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.legal-page ul,
.legal-page ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-page li { margin-bottom: 6px; }

.legal-page strong { color: var(--text); }

/* ── Support ── */
.support-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
}

.support-card .icon { font-size: 2.5rem; margin-bottom: 12px; }
.support-card h3 { margin-bottom: 8px; }
.support-card p { color: var(--text-muted); font-size: 0.9rem; }
.support-card a { font-size: 1rem; font-weight: 600; }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
}

.footer-links a { color: var(--text-muted); font-size: 0.85rem; }
.footer-copy { color: var(--text-muted); font-size: 0.82rem; line-height: 1.8; }

/* ── Apple Checklist ── */
.checklist {
  list-style: none;
  margin-top: 16px;
}

.checklist li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checklist li::before {
  content: '✓';
  color: var(--accent-light);
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
  }
  .menu-toggle { display: block; }
  .hero { padding: 48px 20px 40px; }
  .feature-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
}