/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #1a3a6b;
    --primary-light: #2a5298;
    --primary-dark: #0f2444;
    --accent: #c9a84c;
    --accent-light: #dcc06a;
    --bg-light: #f8f9fa;
    --text: #333;
    --text-light: #666;
    --white: #fff;
    --shadow: 0 2px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}
html { scroll-behavior: smooth; }
body { font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif; color: var(--text); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.bg-light { background: var(--bg-light); }
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }

/* ===== Section Title ===== */
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 32px; color: var(--primary); margin-bottom: 10px; position: relative; display: inline-block; }
.section-title h2::after { content: ''; display: block; width: 60px; height: 3px; background: var(--accent); margin: 12px auto 0; }
.section-title p { color: var(--text-light); font-size: 16px; margin-top: 10px; }

/* ===== Header ===== */
.header { background: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.08); position: fixed; top: 0; left: 0; right: 0; z-index: 1000; }
.header-content { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; }
.logo a { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-icon, .logo-img { width:48px; height:48px; border-radius:8px; object-fit:cover; }
.logo-icon { background: var(--primary); color: var(--accent); width: 48px; height: 48px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: bold; }
.logo-text h1 { font-size: 18px; color: var(--primary); font-weight: 700; }
.logo-text p { font-size: 11px; color: var(--text-light); }
.nav-list { display: flex; gap: 28px; list-style: none; }
.nav-list a { text-decoration: none; color: var(--text); font-size: 15px; font-weight: 500; transition: var(--transition); padding-bottom: 4px; }
.nav-list a:hover, .nav-list a.active { color: var(--primary); border-bottom: 2px solid var(--accent); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 25px; height: 2px; background: var(--primary); border-radius: 2px; }

/* ===== Hero ===== */
.hero { background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); min-height: 85vh; display: flex; align-items: center; position: relative; overflow: hidden; margin-top: 72px; }
.hero::before { content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%); }
.hero::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%); }
.hero-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 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='0.02'%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; max-width: 700px; }
.hero-content h2 { font-size: 42px; color: var(--white); margin-bottom: 20px; line-height: 1.3; }
.hero-content p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 35px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; }

/* ===== Buttons ===== */
.btn { display: inline-block; padding: 14px 32px; border-radius: 6px; font-size: 16px; font-weight: 600; text-decoration: none; transition: var(--transition); cursor: pointer; border: none; }
.btn-primary { background: var(--accent); color: var(--primary-dark); }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(201,168,76,0.3); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid var(--white); }
.btn-outline:hover { background: var(--white); color: var(--primary); }
.btn-lg { padding: 16px 40px; font-size: 18px; }
.btn-block { width: 100%; }

/* ===== Features ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.feature-card { background: var(--white); padding: 40px 30px; border-radius: 12px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); }
.feature-card:hover { transform: translateY(-5px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }
.feature-icon { width: 70px; height: 70px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.feature-icon i { font-size: 28px; color: var(--accent); }
.feature-card h3 { font-size: 20px; color: var(--primary); margin-bottom: 12px; }
.feature-card p { color: var(--text-light); font-size: 15px; line-height: 1.7; }

/* ===== Services ===== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.service-item { background: var(--white); padding: 35px 25px; border-radius: 10px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); border-bottom: 3px solid transparent; }
.service-item:hover { border-bottom-color: var(--accent); transform: translateY(-3px); }
.service-item i { font-size: 36px; color: var(--primary); margin-bottom: 15px; }
.service-item h3 { font-size: 18px; color: var(--primary); margin-bottom: 8px; }
.service-item p { color: var(--text-light); font-size: 14px; }

/* ===== About Preview ===== */
.about-preview-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-preview-text h2 { font-size: 32px; color: var(--primary); margin-bottom: 20px; }
.about-preview-text p { color: var(--text-light); margin-bottom: 15px; line-height: 1.8; }
.about-preview-text .btn { margin-top: 10px; color: var(--primary); border-color: var(--primary); }
.about-preview-text .btn:hover { background: var(--primary); color: var(--white); }
.about-image-placeholder { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 12px; padding: 80px 40px; text-align: center; color: var(--white); }
.about-image-placeholder i { font-size: 64px; margin-bottom: 15px; color: var(--accent); }
.about-image-placeholder p { font-size: 18px; }

/* ===== Clients ===== */
.clients-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.client-item { background: var(--white); padding: 25px 20px; border-radius: 8px; text-align: center; font-size: 15px; font-weight: 500; color: var(--primary); box-shadow: 0 2px 10px rgba(0,0,0,0.06); border: 1px solid #eee; transition: var(--transition); }
.client-item:hover { border-color: var(--accent); box-shadow: 0 4px 15px rgba(201,168,76,0.15); }

/* ===== CTA ===== */
.cta { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); text-align: center; padding: 80px 0; }
.cta h2 { font-size: 36px; color: var(--white); margin-bottom: 15px; }
.cta p { font-size: 18px; color: rgba(255,255,255,0.85); margin-bottom: 30px; }

/* ===== Footer ===== */
.footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: 60px 0 0; }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h3 { color: var(--white); font-size: 16px; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer h3::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--accent); }
.footer-info p { margin-bottom: 10px; font-size: 14px; }
.footer-info i { width: 20px; color: var(--accent); }
.footer-links ul, .footer-services ul { list-style: none; }
.footer-links li, .footer-services li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,0.7); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-services li { font-size: 14px; color: rgba(255,255,255,0.7); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 13px; }
.footer-bottom a { color: var(--accent); text-decoration: none; }

/* ===== Page Banner ===== */
.page-banner { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); padding: 120px 0 60px; text-align: center; }
.page-banner h1 { font-size: 36px; color: var(--white); margin-bottom: 8px; }
.page-banner p { font-size: 16px; color: rgba(255,255,255,0.7); }

/* ===== About Page ===== */
.about-content h2 { font-size: 28px; color: var(--primary); margin-bottom: 20px; }
.about-content p { margin-bottom: 15px; line-height: 1.9; font-size: 16px; color: #555; }
.founder-content { display: grid; grid-template-columns: 300px 1fr; gap: 40px; align-items: start; }
.founder-info { text-align: center; background: var(--white); padding: 30px; border-radius: 12px; box-shadow: var(--shadow); }
.founder-avatar i { font-size: 100px; color: var(--primary); }
.founder-info h3 { font-size: 22px; color: var(--primary); margin: 12px 0 5px; }
.founder-title { color: var(--accent); font-weight: 600; font-size: 14px; margin-bottom: 5px; }
.founder-role { color: var(--text-light); font-size: 13px; }
.founder-desc p { margin-bottom: 12px; line-height: 1.8; color: #555; }

.philosophy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.philosophy-item { text-align: center; padding: 30px 20px; }
.philosophy-item i { font-size: 40px; color: var(--primary); margin-bottom: 15px; }
.philosophy-item h3 { font-size: 18px; color: var(--primary); margin-bottom: 10px; }
.philosophy-item p { color: var(--text-light); font-size: 14px; }

/* ===== Services Detail ===== */
.service-detail-item { display: flex; gap: 25px; align-items: flex-start; padding: 30px; background: var(--white); border-radius: 10px; margin-bottom: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.06); transition: var(--transition); }
.service-detail-item:hover { box-shadow: var(--shadow); transform: translateX(5px); }
.service-detail-icon { width: 60px; height: 60px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 12px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.service-detail-icon i { font-size: 26px; color: var(--accent); }
.service-detail-text h3 { font-size: 18px; color: var(--primary); margin-bottom: 8px; }
.service-detail-text p { color: var(--text-light); line-height: 1.7; }

/* ===== Cases ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.case-card { background: var(--white); padding: 30px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.06); transition: var(--transition); }
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.case-icon { width: 50px; height: 50px; background: rgba(26,58,107,0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 15px; }
.case-icon i { font-size: 22px; color: var(--primary); }
.case-card h3 { font-size: 16px; color: var(--primary); margin-bottom: 5px; }
.case-type { display: inline-block; background: rgba(201,168,76,0.12); color: var(--accent); font-size: 12px; padding: 2px 10px; border-radius: 12px; margin-bottom: 10px; font-weight: 600; }
.case-card p { color: var(--text-light); font-size: 14px; line-height: 1.6; }

/* ===== Qualifications ===== */
.qualifications-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; }
.qualification-card { background: var(--white); padding: 30px; border-radius: 10px; text-align: center; box-shadow: 0 2px 10px rgba(0,0,0,0.06); }
.qualification-card i { font-size: 40px; color: var(--primary); margin-bottom: 15px; }
.qualification-card h3 { font-size: 18px; color: var(--primary); margin-bottom: 10px; }
.qualification-card p { color: var(--text-light); font-size: 14px; margin-bottom: 5px; }

.cert-list { max-width: 700px; margin: 0 auto; }
.cert-item { display: flex; gap: 20px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid #eee; }
.cert-item:last-child { border-bottom: none; }
.cert-item i { font-size: 28px; color: var(--accent); margin-top: 3px; flex-shrink: 0; }
.cert-item h3 { font-size: 16px; color: var(--primary); margin-bottom: 3px; }
.cert-item p { color: var(--text-light); font-size: 14px; }

/* ===== Contact ===== */
.contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info h2, .contact-form-wrap h2 { font-size: 24px; color: var(--primary); margin-bottom: 25px; }
.contact-item { display: flex; gap: 15px; margin-bottom: 20px; }
.contact-item i { width: 40px; height: 40px; background: rgba(26,58,107,0.08); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--primary); flex-shrink: 0; }
.contact-item h3 { font-size: 14px; color: var(--primary); margin-bottom: 3px; }
.contact-item p { color: var(--text-light); font-size: 15px; }
.contact-form { background: var(--white); padding: 30px; border-radius: 10px; box-shadow: var(--shadow); }
.form-group { margin-bottom: 15px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #ddd; border-radius: 6px; font-size: 15px; transition: var(--transition); font-family: inherit; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,58,107,0.1); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-list { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; gap: 15px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
    .nav-list.active { display: flex; }
    .hamburger { display: flex; }
    .hero { min-height: 60vh; }
    .hero-content h2 { font-size: 28px; }
    .hero-content p { font-size: 16px; }
    .hero-buttons { flex-direction: column; gap: 12px; }
    .features-grid, .services-grid, .cases-grid, .philosophy-grid { grid-template-columns: 1fr; }
    .about-preview-content, .founder-content, .contact-content { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr; }
    .section { padding: 50px 0; }
    .section-title h2 { font-size: 26px; }
}

/* ===== News Section ===== */
.news-content { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.news-column { background: var(--white); border-radius: 10px; padding: 25px; box-shadow: var(--shadow); border: 1px solid #eee; }
.news-column h3 { font-size: 17px; color: var(--primary); margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid var(--accent); }
.news-group { margin-bottom: 18px; }
.news-group:last-child { margin-bottom: 0; }
.news-group h4 { font-size: 14px; color: var(--text-light); margin-bottom: 8px; font-weight: 600; }
.news-list { list-style: none; padding: 0; }
.news-list li { padding: 5px 0; border-bottom: 1px dashed #f0f0f0; font-size: 13px; line-height: 1.5; }
.news-list li:last-child { border-bottom: none; }
.news-list a { color: var(--text); text-decoration: none; transition: var(--transition); display: block; }
.news-list a:hover { color: var(--primary); padding-left: 3px; }

@media (max-width: 768px) {
    .news-content { grid-template-columns: 1fr; }
}