:root { --primary: rgb(15,157,88); --primary-hover: #0c8248; --primary-light: rgba(15,157,88,0.1); --text-main: #1a1a1a; --text-gray: #666666; --bg-light: #f4f7f6; --white: #ffffff; --border: #eaeaea; --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-family); color: var(--text-main); line-height: 1.6; background-color: var(--white); }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.header { border-bottom: 1px solid var(--border); background: var(--white); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.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: 18px; font-weight: 800; line-height: 1; color: #111; white-space: nowrap; }
.desktop-nav ul { display: flex; gap: 30px; }
.desktop-nav a { font-size: 16px; font-weight: 500; transition: color 0.3s; }
.desktop-nav a:hover { color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 15px; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text-main); }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 6px; font-size: 16px; font-weight: 500; transition: all 0.3s; cursor: pointer; }
.btn-primary { background-color: var(--primary); color: var(--white); border: 1px solid var(--primary); }
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background-color: var(--primary); color: var(--white); }
.btn-large { padding: 14px 32px; font-size: 18px; border-radius: 8px; }

.drawer-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.drawer-overlay.active { opacity: 1; visibility: visible; }
.mobile-drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: var(--white); z-index: 1000; transition: left 0.3s ease; overflow-y: auto; display: flex; flex-direction: column; }
.mobile-drawer.active { left: 0; }
.drawer-header { padding: 20px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); }
.drawer-close { background: none; border: none; cursor: pointer; color: var(--text-main); padding: 5px; }
.mobile-nav { padding: 20px 0; }
.mobile-nav ul li a { display: block; padding: 15px 24px; border-bottom: 1px solid var(--border); font-size: 16px; font-weight: 500; }

.download-page { padding: 80px 0; background: linear-gradient(135deg, var(--white) 0%, var(--bg-light) 100%); overflow: hidden; }
.dl-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.dl-text h1 { font-size: 42px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.dl-text p { font-size: 18px; color: var(--text-gray); margin-bottom: 40px; }
.dl-actions { display: flex; gap: 20px; margin-bottom: 40px; }
.dl-actions .btn svg { margin-right: 10px; }
.dl-qr { display: flex; align-items: center; gap: 20px; background: var(--white); padding: 15px; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); display: inline-flex; }
.dl-qr img { width: 100px; height: 100px; border-radius: 8px; }
.dl-qr span { font-size: 16px; font-weight: 600; color: var(--text-main); max-width: 120px; }
.dl-img img { border-radius: 20px; box-shadow: 0 20px 50px rgba(0,0,0,0.15); transform: perspective(1000px) rotateY(-5deg); transition: transform 0.5s; }
.dl-img:hover img { transform: perspective(1000px) rotateY(0deg); }

.dl-steps { padding: 80px 0; background: var(--white); text-align: center; }
.dl-steps h2 { font-size: 36px; font-weight: 800; margin-bottom: 50px; }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step-card { background: var(--bg-light); padding: 40px 30px; border-radius: 12px; border: 1px solid var(--border); }
.step-num { width: 60px; height: 60px; background: var(--primary); color: var(--white); font-size: 24px; font-weight: 800; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin: 0 auto 20px; box-shadow: 0 5px 15px var(--primary-light); }
.step-card h3 { font-size: 22px; margin-bottom: 15px; font-weight: 700; }
.step-card p { color: var(--text-gray); }

.footer { background: #1a1a1a; color: #ffffff; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo span { color: #ffffff; }
.footer-desc { margin-top: 20px; color: #a0a0a0; font-size: 14px; line-height: 1.8; }
.footer-title { font-size: 18px; font-weight: 600; margin-bottom: 20px; color: #ffffff; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links a { color: #a0a0a0; transition: color 0.3s; font-size: 14px; }
.footer-links a:hover { color: var(--primary); }
.footer-contact p { color: #a0a0a0; font-size: 14px; margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid #333; padding: 20px 0; text-align: center; color: #666; font-size: 14px; }

@media (max-width: 992px) {
  .desktop-nav, .header-actions .btn { display: none; }
  .menu-toggle { display: block; }
  .dl-wrapper { grid-template-columns: 1fr; text-align: center; }
  .dl-actions { justify-content: center; }
  .dl-img { order: -1; margin-bottom: 30px; }
  .dl-img img { transform: none; width: 80%; }
  .dl-img:hover img { transform: none; }
  .step-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .dl-actions { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
}