/* === RESET & BASE === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: #1a1a2e; line-height: 1.7; background: #fafbfc; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* === NAVBAR === */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(0,0,0,0.06); transition: all 0.3s; }
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.3rem; }
.logo-icon { font-size: 1.6rem; }
.logo-text { background: linear-gradient(135deg, #1a365d, #2563eb); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 8px; }
.nav-links a { padding: 8px 16px; border-radius: 8px; font-size: 0.9rem; font-weight: 500; color: #4a5568; transition: all 0.2s; }
.nav-links a:hover, .nav-links a.active { color: #2563eb; background: rgba(37,99,235,0.08); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 32px; height: 32px; position: relative; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #1a1a2e; margin: 5px auto; transition: 0.3s; }

/* === HERO === */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%); overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 20% 50%, rgba(37,99,235,0.15) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(59,130,246,0.1) 0%, transparent 40%); }
.hero::after { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234a5568' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 60%, rgba(15,23,42,0.8)); }
.hero-content { position: relative; z-index: 2; text-align: center; color: #fff; padding: 100px 24px 60px; }
.hero-badge { display: inline-block; padding: 6px 20px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15); border-radius: 100px; font-size: 0.85rem; color: rgba(255,255,255,0.8); margin-bottom: 32px; backdrop-filter: blur(10px); }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900; line-height: 1.15; margin-bottom: 24px; letter-spacing: -0.02em; }
.hero .highlight { background: linear-gradient(135deg, #60a5fa, #3b82f6, #2563eb); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.1rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 40px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }
.hero-stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { font-size: 2.5rem; font-weight: 900; color: #60a5fa; }
.stat-unit { font-size: 1.2rem; color: #60a5fa; margin-left: 2px; }
.stat-label { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
.scroll-indicator { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2; color: rgba(255,255,255,0.4); font-size: 0.8rem; text-align: center; animation: bounce 2s infinite; }
.scroll-arrow { width: 20px; height: 20px; border-right: 2px solid rgba(255,255,255,0.4); border-bottom: 2px solid rgba(255,255,255,0.4); transform: rotate(45deg); margin: 8px auto 0; }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* === BUTTONS === */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 14px 32px; border-radius: 10px; font-weight: 600; font-size: 0.95rem; transition: all 0.3s; border: none; cursor: pointer; }
.btn-primary { background: linear-gradient(135deg, #2563eb, #1d4ed8); color: #fff; box-shadow: 0 4px 15px rgba(37,99,235,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,0.4); }
.btn-outline { border: 2px solid rgba(255,255,255,0.3); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; color: #2563eb; background: rgba(37,99,235,0.08); border-radius: 8px; }
.btn-sm:hover { background: rgba(37,99,235,0.15); }
.btn-block { width: 100%; }

/* === SECTIONS === */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.15em; color: #2563eb; background: rgba(37,99,235,0.08); padding: 6px 16px; border-radius: 100px; margin-bottom: 16px; }
.section-header h2 { font-size: 2.2rem; font-weight: 800; color: #1a1a2e; margin-bottom: 12px; }
.section-desc { font-size: 1.05rem; color: #64748b; }

/* === ABOUT === */
.about { background: #fff; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h3 { font-size: 1.5rem; color: #1a365d; margin-bottom: 20px; }
.about-text p { color: #4a5568; margin-bottom: 16px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 30px; }
.feature { display: flex; gap: 14px; align-items: flex-start; padding: 16px; background: #f8fafc; border-radius: 12px; border: 1px solid #e2e8f0; }
.feature-icon { font-size: 1.5rem; flex-shrink: 0; }
.feature strong { display: block; font-size: 0.9rem; color: #1a1a2e; }
.feature span { font-size: 0.8rem; color: #94a3b8; }
.about-img-placeholder { aspect-ratio: 4/3; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); border-radius: 16px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; }
.placeholder-icon { font-size: 4rem; opacity: 0.4; }
.about-img-placeholder span { font-size: 0.9rem; color: #64748b; }

/* === PRODUCTS === */
.products { background: #f8fafc; }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid #e2e8f0; transition: all 0.3s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
.product-image { position: relative; background: linear-gradient(135deg, #1e293b, #334155); padding: 40px; text-align: center; }
.product-placeholder { font-size: 4rem; opacity: 0.6; }
.product-tag { position: absolute; top: 12px; right: 12px; background: #2563eb; color: #fff; font-size: 0.7rem; padding: 4px 10px; border-radius: 100px; font-weight: 600; }
.product-info { padding: 24px; }
.product-info h3 { font-size: 1.05rem; font-weight: 700; color: #1a1a2e; margin-bottom: 10px; line-height: 1.4; }
.product-info p { font-size: 0.88rem; color: #64748b; margin-bottom: 14px; line-height: 1.6; }
.product-specs { margin-bottom: 16px; }
.product-specs li { font-size: 0.8rem; color: #94a3b8; padding: 3px 0; padding-left: 14px; position: relative; }
.product-specs li::before { content: ''; position: absolute; left: 0; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: #2563eb; }

/* === SERVICES === */
.services { background: #fff; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { padding: 36px 28px; background: #f8fafc; border-radius: 16px; border: 1px solid #e2e8f0; transition: all 0.3s; position: relative; overflow: hidden; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(0,0,0,0.06); border-color: #2563eb; }
.service-number { position: absolute; top: 16px; right: 20px; font-size: 2.5rem; font-weight: 900; color: rgba(37,99,235,0.06); }
.service-icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: #1a1a2e; margin-bottom: 10px; }
.service-card p { font-size: 0.88rem; color: #64748b; line-height: 1.7; }

/* === CASES === */
.cases { background: #f8fafc; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: #fff; border-radius: 16px; padding: 32px; border: 1px solid #e2e8f0; transition: all 0.3s; }
.case-card:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(0,0,0,0.06); }
.case-tag { display: inline-block; background: rgba(37,99,235,0.08); color: #2563eb; font-size: 0.75rem; font-weight: 600; padding: 4px 12px; border-radius: 100px; margin-bottom: 16px; }
.case-card h3 { font-size: 1.1rem; font-weight: 700; color: #1a1a2e; margin-bottom: 12px; line-height: 1.4; }
.case-card p { font-size: 0.88rem; color: #64748b; line-height: 1.7; margin-bottom: 16px; }
.case-stats { display: flex; gap: 20px; flex-wrap: wrap; }
.case-stats span { font-size: 0.82rem; color: #64748b; padding: 6px 12px; background: #f1f5f9; border-radius: 8px; }
.case-stats strong { color: #2563eb; }

/* === PARTNERS === */
.partners { background: #fff; padding: 60px 0; }
.partners-scroll { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.partner-item { padding: 16px 32px; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 12px; font-size: 0.95rem; font-weight: 500; color: #4a5568; transition: all 0.2s; }
.partner-item:hover { border-color: #2563eb; color: #2563eb; }

/* === CONTACT === */
.contact { background: #f8fafc; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 28px; }
.contact-icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.contact-item strong { display: block; font-size: 0.95rem; color: #1a1a2e; margin-bottom: 4px; }
.contact-item p { font-size: 0.88rem; color: #64748b; margin: 0; }
.contact-form { background: #fff; padding: 36px; border-radius: 16px; border: 1px solid #e2e8f0; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: #1a1a2e; margin-bottom: 6px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #e2e8f0; border-radius: 10px; font-size: 0.9rem; font-family: inherit; transition: border-color 0.2s; background: #f8fafc; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #2563eb; background: #fff; }

/* === FOOTER === */
.footer { background: #0f172a; color: #fff; padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 60px; }
.footer-about p { font-size: 0.88rem; color: rgba(255,255,255,0.5); line-height: 1.7; margin-top: 16px; }
.footer .logo { margin-bottom: 8px; }
.footer .logo-text { background: linear-gradient(135deg, #60a5fa, #3b82f6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.footer-links h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 20px; color: rgba(255,255,255,0.9); }
.footer-links a { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.5); padding: 4px 0; transition: color 0.2s; }
.footer-links a:hover { color: #60a5fa; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: #60a5fa; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; border-bottom: 1px solid #e2e8f0; box-shadow: 0 8px 20px rgba(0,0,0,0.08); }
    .nav-links.active { display: flex; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .products-grid, .services-grid, .cases-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 24px; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .about-features { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .form-row { grid-template-columns: 1fr; }
    .stat-number { font-size: 2rem; }
    .hero h1 { font-size: 2.2rem; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .partners-scroll { gap: 12px; }
    .partner-item { padding: 12px 20px; font-size: 0.85rem; }
}