/*公共 Hero Section */
.hero { align-items: center; background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%); display: flex; justify-content: center; min-height: 55vh; overflow: hidden; position: relative; }
.hero-bg { inset: 0; position: absolute; z-index: 0; }
.hero-bg::before { background-image: radial-gradient(circle at 20% 50%, rgba(54, 105, 239, 0.3) 0%, transparent 50%), radial-gradient(circle at 80% 80%, rgba(90, 140, 247, 0.2) 0%, transparent 50%); content: ""; inset: 0; position: absolute; }
.hero-overlay { background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6)); inset: 0; position: absolute; }
.hero-content { margin: 0 auto; max-width: 1280px; padding: 140px 24px 80px; position: relative; text-align: center; width: 100%; z-index: 2; }
.hero-badge { align-items: center; animation: slideUp 0.8s ease-out 0.2s both; backdrop-filter: blur(8px); background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 24px; display: inline-flex; gap: 8px; margin-bottom: 32px; padding: 8px 16px; }
.hero-badge span { color: rgba(255, 255, 255, 0.9); font-size: 14px; }
.hero-title { margin-bottom: 24px; }
.hero-title h1 { animation: slideUp 0.8s ease-out 0.4s both; color: var(--brand-white); font-size: clamp(36px, 6vw, 56px); font-weight: 700; line-height: 1.2; margin-bottom: 16px; }
.hero-title span { animation: slideUp 0.8s ease-out 0.5s both; color: rgba(255, 255, 255, 0.8); display: block; font-size: clamp(24px, 4vw, 36px); font-weight: 300; }
/* ======================================== Section Common Styles ======================================== */
.section-header { margin-bottom: 45px; text-align: center; }
.section-badge { align-items: center; background: rgba(54, 105, 239, 0.1); border-radius: 20px; color: var(--brand-blue); display: inline-flex; font-size: 13px; font-weight: 500; gap: 8px; margin-bottom: 10px; padding: 8px 16px; }
.section-title { color: var(--brand-black); font-size: clamp(28px, 4vw, 36px); font-weight: 700; margin-bottom: 8px; }
.section-subtitle { color: var(--brand-blue); font-size: 16px; font-weight: 500; }
/********************************************科学研究*********************************************/
/* ======================================== Hero Section ======================================== */
.heroresearch { align-items: center; background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%); display: flex; justify-content: center; min-height: 55vh; overflow: hidden; position: relative; }
.heroresearch-bg { inset: 0; position: absolute; z-index: 0; }
.heroresearch-bg::before { background-image: radial-gradient(circle at 20% 50%, rgba(54, 105, 239, 0.3) 0%, transparent 50%), radial-gradient(circle at 80% 80%, rgba(90, 140, 247, 0.2) 0%, transparent 50%); content: ""; inset: 0; position: absolute; }
.heroresearch-overlay { background: linear-gradient(to right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.4) 60%, transparent); inset: 0; position: absolute; }
.heroresearch-content { margin: 0 auto; max-width: 1280px; padding: 140px 24px 80px; position: relative; text-align: center; width: 100%; z-index: 2; }
.heroresearch-badge { align-items: center; animation: slideUp 0.8s ease-out 0.2s both; backdrop-filter: blur(8px); background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 24px; display: inline-flex; gap: 8px; margin-bottom: 32px; padding: 8px 16px; }
.heroresearch-badge span { color: rgba(255, 255, 255, 0.9); font-size: 14px; }
.heroresearch-title { margin-bottom: 24px; }
.heroresearch-title h1 { animation: slideUp 0.8s ease-out 0.4s both; color: var(--brand-white); font-size: clamp(36px, 6vw, 56px); font-weight: 700; line-height: 1.2; margin-bottom: 16px; }
.heroresearch-title span { animation: slideUp 0.8s ease-out 0.5s both; color: rgba(255, 255, 255, 0.8); display: block; font-size: clamp(24px, 4vw, 36px); font-weight: 300; }
.heroresearch-description { animation: slideUp 0.8s ease-out 0.6s both; color: rgba(255, 255, 255, 0.7); font-size: 18px; line-height: 1.7; margin: 0 auto 40px; max-width: 600px; }
.btn-primary { align-items: center; animation: slideUp 0.8s ease-out 0.7s both; background: var(--brand-blue); border-radius: 28px; color: var(--brand-white); display: inline-flex; font-size: 16px; font-weight: 500; gap: 8px; padding: 14px 28px; transition: all var(--transition-normal); }
.btn-primary:hover { box-shadow: 0 10px 30px rgba(54, 105, 239, 0.4); transform: scale(1.05); }
.btn-primary svg { transition: transform var(--transition-fast); }
.btn-primary:hover svg { transform: translateX(4px); }
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
/* ======================================== Research Section ======================================== */
.research2 { background: var(--brand-white); overflow: hidden; padding: 50px 0; position: relative; }
.research2-container { align-items: center; display: grid; gap: 60px; grid-template-columns: 1fr 1fr; }
.research2-content h3 { color: var(--brand-black); font-size: 28px; font-weight: 700; margin-bottom: 24px; }
.research2-content p { color: var(--brand-gray1); font-size: 15px; line-height: 1.8; margin-bottom: 16px; }
.research2-content .btn-primary { margin: 24px 0; }
.research2-stats { border-top: 1px solid var(--brand-gray3); display: grid; gap: 24px; grid-template-columns: repeat(3, 1fr); margin-top: 5px; padding-top: 32px; }
.stat2-item { text-align: center; }
.stat2-number { color: var(--brand-blue); display: block; font-size: 36px; font-weight: 700; line-height: 1; margin-bottom: 8px; }
.stat2-label { color: var(--brand-gray1); font-size: 13px; }
.research2-visuals { display: flex; flex-direction: column; gap: 24px; }
.research2-card { border-radius: 20px; box-shadow: var(--shadow-lg); overflow: hidden; position: relative; transition: all var(--transition-slow); }
.research2-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-8px); }
.research2-card img { max-height: 250px; object-fit: cover; width: 100%; }
.research2-card-info { background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent); bottom: 0; color: var(--brand-white); left: 0; padding: 24px; position: absolute; right: 0; }
.research2-card-info h4 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.research2-card-info p { color: rgba(255, 255, 255, 0.8); font-size: 14px; }
/* ======================================== Expert Section ======================================== */
.expert-section { background: var(--brand-gray2); overflow: hidden; padding: 100px 0; position: relative; }
.expert-section::before { background: linear-gradient(to right, transparent, var(--brand-gray3), transparent); content: ""; height: 1px; left: 0; position: absolute; right: 0; top: 0; }
.expert-container { display: grid; gap: 24px; grid-template-columns: repeat(4, 1fr); position: relative; z-index: 1; }
.expert-card { background: var(--brand-white); border-radius: 20px; box-shadow: var(--shadow-md); cursor: pointer; overflow: hidden; transition: all var(--transition-slow); }
.expert-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-8px); }
.expert-avatar { aspect-ratio: 1; background: linear-gradient(135deg, #F0F4FF, #E8EEFF); overflow: hidden; position: relative; }
.expert-avatar img { height: 100%; object-fit: cover; width: 100%; }
.expert-info { padding: 24px; }
.expert-name { color: var(--brand-black); font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.expert-title { color: var(--brand-blue); font-size: 14px; font-weight: 500; margin-bottom: 12px; }
.expert-bio { -webkit-box-orient: vertical; color: var(--brand-gray1); display: -webkit-box; font-size: 14px; -webkit-line-clamp: 3; line-height: 1.7; overflow: hidden; }
.expert-arrow { align-items: center; background: var(--brand-gray2); border-radius: 50%; color: var(--brand-gray1); display: inline-flex; height: 40px; justify-content: center; margin-top: 16px; transition: all var(--transition-fast); width: 40px; }
.expert-card:hover .expert-arrow { background: var(--brand-blue); color: var(--brand-white); transform: translateX(4px); }
/* ======================================== 科学研究 Responsive Design ======================================== */
@media (max-width: 1024px) {
    .nav-links, .nav-cta { display: none; }
    .mobile-menu-btn { display: flex; }
    .research2-container { gap: 48px; grid-template-columns: 1fr; }
    .expert-container { grid-template-columns: repeat(2, 1fr); }
    .research2-card img {max-height: 400px;}
    .herolaboratory-title .title-line { font-size: clamp(32px, 5vw, 48px); }
    .heroresearch-title h1 { font-size: clamp(30px, 5vw, 48px); }
}
@media (max-width: 640px) {
    .hero { min-height: 55vh; }
    .expert-container { grid-template-columns: 1fr; }
    .research2-card img {max-height: 400px;}
    .herolaboratory-title .title-line { font-size: clamp(32px, 5vw, 48px); }
    .heroresearch-title h1 { font-size: clamp(30px, 5vw, 48px); }
}