* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --primary-color: #0066cc; --primary-dark: #0052a3; --secondary-color: #ff6b35; --text-dark: #333; --text-light: #666; --bg-light: #f8f9fa; --bg-white: #fff; --shadow: 0 4px 20px rgba(0,0,0,0.1); --transition: all 0.3s ease; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif; line-height: 1.6; color: var(--text-dark); overflow-x: hidden; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.btn { display: inline-block; padding: 12px 30px; border-radius: 5px; font-size: 16px; font-weight: 500; cursor: pointer; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--primary-color); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-secondary { background: transparent; border-color: white; color: white; }
.btn-secondary:hover { background: white; color: var(--primary-color); }
.btn-outline { border-color: var(--primary-color); color: var(--primary-color); width: 100%; text-align: center; }
.btn-outline:hover { background: var(--primary-color); color: white; }
.navbar { position: fixed; top: 0; left: 0; right: 0; background: rgba(255,255,255,0.95); box-shadow: var(--shadow); z-index: 1000; padding: 15px 0; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; font-size: 24px; font-weight: bold; color: var(--primary-color); }
.logo-img { height: 32px; width: auto; vertical-align: middle; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-weight: 500; transition: var(--transition); position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background: var(--primary-color); transition: var(--transition); }
.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--primary-color); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 25px; height: 3px; background: var(--text-dark); transition: var(--transition); }
.hero { position: relative; height: 100vh; min-height: 600px; display: flex; align-items: center; justify-content: center; text-align: center; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); overflow: hidden; }
.hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at 20% 80%, rgba(0,102,204,0.3) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(255,107,53,0.2) 0%, transparent 50%); }
.hero-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="white" opacity="0.5"/></svg>'); background-size: 50px 50px; opacity: 0.3; }
.hero-content { position: relative; z-index: 1; color: white; padding: 20px; }
.hero h1 { font-size: 48px; font-weight: bold; margin-bottom: 20px; text-shadow: 2px 2px 10px rgba(0,0,0,0.3); animation: fadeInUp 0.8s ease; }
.hero .subtitle { font-size: 28px; color: var(--secondary-color); margin-bottom: 15px; font-weight: 600; animation: fadeInUp 0.8s ease 0.2s both; }
.hero .tagline { font-size: 18px; opacity: 0.9; margin-bottom: 40px; animation: fadeInUp 0.8s ease 0.4s both; }
.hero-buttons { display: flex; gap: 20px; justify-content: center; animation: fadeInUp 0.8s ease 0.6s both; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.section { padding: 100px 0; }
.section-gray { background: var(--bg-light); }
.section-blue { background: linear-gradient(135deg, var(--primary-color), #004999); color: white; }
.section-title { text-align: center; font-size: 36px; margin-bottom: 20px; position: relative; }
.section-title::after { content: ''; display: block; width: 60px; height: 4px; background: var(--secondary-color); margin: 15px auto 0; }
.section-subtitle { text-align: center; font-size: 18px; color: var(--text-light); margin-bottom: 50px; }
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text p { font-size: 17px; margin-bottom: 20px; color: var(--text-light); }
.about-stats { display: flex; gap: 40px; margin-top: 40px; }
.stat-item { text-align: center; }
.stat-number { display: block; font-size: 42px; font-weight: bold; color: var(--primary-color); }
.stat-label { font-size: 14px; color: var(--text-light); }
.about-image { display: flex; justify-content: center; align-items: center; }
.image-placeholder { width: 100%; max-width: 400px; height: 300px; background: linear-gradient(135deg, #e8f4fd, #d4ecfc); border-radius: 20px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 80px; box-shadow: var(--shadow); }
.image-placeholder p { font-size: 18px; color: var(--text-light); margin-top: 10px; }
.courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.course-card { background: white; padding: 40px 30px; border-radius: 15px; box-shadow: var(--shadow); transition: var(--transition); text-align: center; }
.course-card:hover { transform: translateY(-10px); box-shadow: 0 15px 40px rgba(0,0,0,0.15); }
.course-icon { font-size: 60px; margin-bottom: 20px; }
.course-card h3 { font-size: 24px; margin-bottom: 10px; color: var(--text-dark); }
.course-level { font-size: 14px; color: var(--primary-color); margin-bottom: 20px; font-weight: 500; }
.course-list { text-align: left; margin: 20px 0; }
.course-list li { padding: 8px 0; border-bottom: 1px solid #eee; position: relative; padding-left: 25px; color: var(--text-light); }
.course-list li::before { content: '✓'; position: absolute; left: 0; color: var(--primary-color); font-weight: bold; }
.course-price { font-size: 20px; font-weight: bold; color: var(--secondary-color); margin: 20px 0; }
.advantages-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.advantage-item { text-align: center; padding: 30px; background: white; border-radius: 15px; box-shadow: var(--shadow); transition: var(--transition); }
.advantage-item:hover { transform: translateY(-5px); }
.advantage-icon { font-size: 50px; margin-bottom: 20px; }
.advantage-item h3 { font-size: 20px; margin-bottom: 15px; color: var(--text-dark); }
.advantage-item p { color: var(--text-light); font-size: 15px; }
.certificate-info { max-width: 700px; margin: 0 auto; }
.cert-card { background: rgba(255,255,255,0.1); padding: 40px; border-radius: 15px; text-align: center; backdrop-filter: blur(10px); }
.cert-card h3 { font-size: 26px; margin-bottom: 20px; }
.cert-card p { font-size: 16px; margin-bottom: 25px; opacity: 0.9; }
.cert-card ul { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.cert-card li { font-size: 16px; }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-item { display: flex; gap: 20px; margin-bottom: 30px; }
.contact-icon { font-size: 36px; flex-shrink: 0; }
.contact-item h4 { font-size: 18px; margin-bottom: 5px; }
.contact-item p { color: var(--text-light); }
.contact-form { background: white; padding: 40px; border-radius: 15px; box-shadow: var(--shadow); }
.contact-form h3 { font-size: 24px; margin-bottom: 25px; text-align: center; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 15px; margin-bottom: 15px; border: 1px solid #ddd; border-radius: 8px; font-size: 15px; transition: var(--transition); box-sizing: border-box; height: 50px; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(0,102,204,0.1); }
.contact-form button { width: 100%; }
footer { background: #1a1a2e; color: white; padding: 40px 0; text-align: center; }
.footer-logo { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 20px; margin-bottom: 20px; }
.copyright { opacity: 0.8; margin-bottom: 10px; }
.footer-note { opacity: 0.6; font-size: 14px; margin-bottom: 10px; }
.beian { font-size: 12px; color: #999; margin-top: 10px; }
.beian a { color: #999; text-decoration: none; }
.beian a:hover { text-decoration: underline; }
@media (max-width: 768px) { .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: white; flex-direction: column; padding: 20px; box-shadow: var(--shadow); } .nav-links.active { display: flex; } .hamburger { display: flex; } .hero h1 { font-size: 32px; } .hero .subtitle { font-size: 20px; } .hero-buttons { flex-direction: column; } .about-content, .contact-wrapper { grid-template-columns: 1fr; } .about-stats { justify-content: center; } .section-title { font-size: 28px; } }
@media (max-width: 480px) { .hero h1 { font-size: 26px; } .logo { font-size: 20px; } .about-stats { flex-direction: column; gap: 20px; } }