:root {
    --blue-900: #0a1628;
    --blue-800: #0f2440;
    --blue-700: #143d6b;
    --blue-600: #1a5696;
    --blue-500: #2563eb;
    --blue-400: #60a5fa;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --white: #ffffff;
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
    --radius: 8px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; color: var(--gray-800); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { color: var(--blue-500); text-decoration: none; }
a:hover { color: var(--blue-600); }

/* Navbar */
.navbar { position: fixed; top: 0; width: 100%; z-index: 1000; background: rgba(255,255,255,.97); backdrop-filter: blur(8px); box-shadow: var(--shadow); transition: background .3s; }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo-text { font-size: 1.4rem; font-weight: 800; color: var(--blue-800); letter-spacing: 2px; }
.logo-sub { font-size: .7rem; color: var(--gray-600); letter-spacing: 3px; margin-left: 6px; vertical-align: middle; }
.nav-links { display: flex; list-style: none; gap: 32px; }
.nav-links a { color: var(--gray-700); font-weight: 500; font-size: .95rem; transition: color .2s; }
.nav-links a:hover { color: var(--blue-500); }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.lang-switcher { display: flex; gap: 4px; }
.lang-btn { background: none; border: 1px solid var(--gray-300); border-radius: 4px; padding: 4px 10px; font-size: .8rem; cursor: pointer; color: var(--gray-600); transition: all .2s; }
.lang-btn.active { background: var(--blue-800); color: var(--white); border-color: var(--blue-800); }
.hamburger { display: none; background: none; border: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--gray-800); transition: .3s; }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 50%, var(--blue-600) 100%); color: var(--white); padding-top: 72px; }
.hero-overlay { 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='%23ffffff' 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-content { position: relative; z-index: 1; text-align: center; padding: 60px 0; }
.hero h1 { font-size: 3.2rem; font-weight: 800; line-height: 1.15; margin-bottom: 20px; max-width: 800px; margin-left: auto; margin-right: auto; }
.hero-sub { font-size: 1.2rem; opacity: .9; max-width: 650px; margin: 0 auto 40px; line-height: 1.7; }
.hero-badges { display: flex; justify-content: center; gap: 32px; margin-bottom: 40px; flex-wrap: wrap; }
.badge { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.badge-num { font-size: 1.6rem; font-weight: 800; }
.badge span:last-child { font-size: .85rem; opacity: .8; }
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-block; padding: 14px 32px; border-radius: var(--radius); font-weight: 600; font-size: 1rem; transition: all .25s; cursor: pointer; border: 2px solid transparent; }
.btn-primary { background: var(--blue-500); color: var(--white); }
.btn-primary:hover { background: var(--blue-600); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { border-color: var(--white); color: var(--white); background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,.1); }
.btn-full { width: 100%; }

/* Sections */
.section { padding: 100px 0; }
.section-alt { background: var(--gray-100); }
.section-title { text-align: center; font-size: 2.2rem; font-weight: 800; color: var(--blue-900); margin-bottom: 8px; }
.section-subtitle { text-align: center; color: var(--gray-600); font-size: 1.1rem; margin-bottom: 60px; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-text p { margin-bottom: 16px; color: var(--gray-700); font-size: 1.05rem; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat-card { background: var(--white); padding: 28px; border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; display: flex; flex-direction: column; gap: 6px; }
.stat-icon { font-size: 1.8rem; }
.stat-num { font-size: 1.6rem; font-weight: 800; color: var(--blue-800); }
.stat-label { color: var(--gray-600); font-size: .9rem; }

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 60px; }
.service-card { background: var(--white); padding: 36px 28px; border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-icon { font-size: 2.2rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.15rem; color: var(--blue-900); margin-bottom: 10px; }
.service-card p { color: var(--gray-600); font-size: .95rem; line-height: 1.6; }
.key-services { text-align: center; }
.key-services h3 { font-size: 1.4rem; color: var(--blue-900); margin-bottom: 28px; }
.key-features { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.key-feat { display: flex; flex-direction: column; align-items: center; gap: 6px; max-width: 220px; }
.kf-icon { font-size: 2rem; }
.key-feat strong { color: var(--blue-800); }
.key-feat span { color: var(--gray-600); font-size: .9rem; }

/* Industries */
.industries-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.industry-card { text-align: center; padding: 40px 24px; border-radius: var(--radius); border: 1px solid var(--gray-200); transition: all .25s; }
.industry-card:hover { border-color: var(--blue-400); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.ind-icon { font-size: 3rem; margin-bottom: 16px; }
.industry-card h3 { color: var(--blue-800); margin-bottom: 10px; }
.industry-card p { color: var(--gray-600); font-size: .9rem; }

/* Equipment */
.equip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.equip-card { background: var(--white); padding: 32px; border-radius: var(--radius); box-shadow: var(--shadow); border-top: 3px solid var(--blue-500); }
.equip-card h3 { color: var(--blue-800); margin-bottom: 10px; font-size: 1.1rem; }
.equip-card p { color: var(--gray-600); font-size: .92rem; margin-bottom: 12px; }
.equip-tag { display: inline-block; background: var(--blue-500); color: var(--white); padding: 4px 12px; border-radius: 20px; font-size: .8rem; font-weight: 600; }

/* Projects */
.projects-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.project-card { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform .25s; }
.project-card:hover { transform: translateY(-4px); }
.proj-img { height: 200px; }
.proj-placeholder-1 { background: linear-gradient(135deg, #1a3a5c, #2d6aa0); }
.proj-placeholder-2 { background: linear-gradient(135deg, #2d6aa0, #4a90c4); }
.proj-placeholder-3 { background: linear-gradient(135deg, #0f2440, #1a5696); }
.proj-placeholder-4 { background: linear-gradient(135deg, #2563eb, #60a5fa); }
.proj-placeholder-5 { background: linear-gradient(135deg, #065f46, #059669); }
.proj-placeholder-6 { background: linear-gradient(135deg, #1e3a5f, #3b82f6); }
.proj-placeholder-7 { background: linear-gradient(135deg, #0f4c3a, #10b981); }
.proj-placeholder-8 { background: linear-gradient(135deg, #1e40af, #6366f1); }
.proj-info { padding: 16px; background: var(--white); }
.proj-info h3 { font-size: .95rem; color: var(--gray-800); }
.proj-tag { display: inline-block; background: var(--gray-100); color: var(--gray-600); padding: 2px 10px; border-radius: 12px; font-size: .75rem; margin-top: 6px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.ci-item strong { display: block; color: var(--blue-800); margin-bottom: 2px; }
.ci-item span, .ci-item a { color: var(--gray-600); font-size: .95rem; }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input, .contact-form select, .contact-form textarea { padding: 14px 16px; border: 1px solid var(--gray-300); border-radius: var(--radius); font-size: 1rem; font-family: inherit; transition: border .2s; background: var(--white); }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.form-note { font-size: .9rem; color: var(--blue-600); margin-top: 4px; }

/* Footer */
.footer { background: var(--blue-900); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.footer .logo-text { color: var(--white); }
.footer .logo-sub { color: rgba(255,255,255,.5); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: var(--white); margin-bottom: 16px; font-size: 1rem; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 8px; font-size: .9rem; }
.footer-desc { font-size: .9rem; margin-top: 12px; max-width: 320px; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; text-align: center; font-size: .85rem; }

/* Responsive */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .equip-grid { grid-template-columns: repeat(2, 1fr); }
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; gap: 16px; box-shadow: var(--shadow-md); }
    .nav-links.open { display: flex; }
    .hero h1 { font-size: 2.2rem; }
    .hero-sub { font-size: 1rem; }
    .hero-badges { gap: 20px; }
    .badge-num { font-size: 1.2rem; }
    .about-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .industries-grid { grid-template-columns: 1fr; }
    .equip-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .section { padding: 60px 0; }
    .section-title { font-size: 1.8rem; }
}
@media (max-width: 480px) {
    .projects-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.8rem; }
    .about-stats { grid-template-columns: 1fr; }
}