:root {
  --primary: rgb(48,209,88);
  --primary-hover: rgb(40,180,75);
  --bg-dark: #0f172a;
  --bg-light: #f8fafc;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background-color: var(--bg-light); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: color 0.3s; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }


.header { background: var(--bg-dark); position: sticky; top: 0; z-index: 100; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
.logo span { display: inline-block; font-size: 22px; font-weight: 800; line-height: 1; color: #fff; white-space: nowrap; }
.desktop-nav { display: flex; gap: 24px; align-items: center; }
.desktop-nav a { color: #f8fafc; font-size: 16px; font-weight: 500; }
.desktop-nav a:hover { color: var(--primary); }
.mobile-menu-btn { display: none; background: none; border: none; color: #fff; cursor: pointer; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); opacity: 0; visibility: hidden; transition: 0.3s; z-index: 999; }
.drawer { position: fixed; top: 0; left: -320px; width: 280px; height: 100%; background: #fff; z-index: 1000; transition: left 0.3s ease; display: flex; flex-direction: column; }
.drawer.active { left: 0; }
.drawer-overlay.active { opacity: 1; visibility: visible; }
.drawer-header { padding: 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); }
.drawer-header .logo span { color: var(--text-main); }
.close-btn { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-muted); }
.drawer-nav { padding: 20px; display: flex; flex-direction: column; gap: 15px; }
.drawer-nav a { font-size: 16px; color: var(--text-main); padding-bottom: 12px; border-bottom: 1px solid #f1f5f9; font-weight: 500; }
.drawer-nav a:hover { color: var(--primary); }
.footer { background: var(--bg-dark); color: #94a3b8; padding: 60px 0 24px; margin-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer .logo span { color: #fff; }
.footer-desc { margin-top: 16px; font-size: 14px; line-height: 1.8; max-width: 400px; }
.footer-nav h4 { color: #f8fafc; margin-bottom: 20px; font-size: 18px; }
.footer-nav ul { list-style: none; }
.footer-nav ul li { margin-bottom: 12px; }
.footer-nav ul li a:hover { color: var(--primary); }
.footer-bottom { text-align: center; border-top: 1px solid #1e293b; padding-top: 24px; font-size: 14px; }

@media(max-width: 768px){
  .desktop-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .footer-inner { grid-template-columns: 1fr; }
}


.ti-hero { background: #fff; padding: 60px 0; border-bottom: 1px solid var(--border); margin-bottom: 40px; text-align: center; }
.ti-title { font-size: 36px; font-weight: 800; color: var(--text-main); margin-bottom: 16px; }
.ti-desc { font-size: 16px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

.ti-cloud-container { background: #fff; border-radius: 16px; padding: 50px; border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(0,0,0,0.02); }
.ti-cloud { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.tag-btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; background: var(--bg-light); border: 1px solid var(--border); border-radius: 40px; font-size: 15px; font-weight: 500; color: var(--text-main); transition: all 0.3s; }
.tag-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(48,209,88,0.3); }
.tag-count { font-size: 13px; opacity: 0.7; }