/* ==================== Google Fonts ==================== */
@import url('https://fonts.googleapis.com/css2?family=Exo:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

/* ==================== 全局样式 ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0F172A;
    --primary-light: #1E293B;
    --secondary-color: #334155;
    --accent-color: #0369A1;
    --accent-light: #0EA5E9;
    --accent-dark: #075985;
    --text-primary: #020617;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --bg-card: #FFFFFF;
    --border-color: #E2E8F0;
    --border-light: #F1F5F9;
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    --font-display: 'Exo', 'Noto Sans SC', sans-serif;
    --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --focus-ring: 0 0 0 3px rgba(3, 105, 161, 0.4);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

a:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (min-width: 1440px) {
    .container {
        max-width: 1320px;
    }
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 16px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 1000;
    padding: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.logo a {
    display: flex;
    align-items: center;
}

.logo img {
    height: 96px;
    width: auto;
    max-width: 440px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-menu > li > a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu > li > a i {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-menu > li:hover > a i {
    transform: rotate(180deg);
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--accent-color);
    background-color: rgba(3, 105, 161, 0.08);
}

.nav-menu > li > a:focus-visible {
    box-shadow: var(--focus-ring);
}

.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background-color: var(--bg-card);
    min-width: 200px;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-md);
    padding: 8px;
    z-index: 100;
    border: 1px solid var(--border-color);
    animation: dropdownFadeIn var(--transition-fast);
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content li a {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.dropdown-content li a:hover {
    background-color: rgba(3, 105, 161, 0.08);
    color: var(--accent-color);
}

.dropdown-content li a:focus-visible {
    box-shadow: var(--focus-ring);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.hamburger:hover {
    background-color: var(--bg-secondary);
}

.hamburger span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== Hero Banner ==================== */
.hero {
    margin-top: 100px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
    color: white;
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(3, 105, 161, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(14, 165, 233, 0.2) 0%, transparent 40%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg-primary), transparent);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 12px;
    line-height: 1.6;
}

.hero-content p:last-of-type {
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 48px;
}

.btn:focus-visible {
    box-shadow: var(--focus-ring);
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background-color: white;
    color: var(--primary-color);
    border-color: white;
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 24px 16px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, white 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    opacity: 0.85;
    font-weight: 500;
}

/* ==================== 通用区块 ==================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 36px);
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-header p {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 600;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 15px;
    margin-top: 20px;
    transition: all var(--transition-fast);
}

.read-more:hover {
    color: var(--accent-dark);
    gap: 12px;
}

.read-more:focus-visible {
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

/* ==================== 基地介绍 ==================== */
.about-section {
    background-color: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.9;
}

.about-content p:first-child::first-letter {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 700;
    color: var(--accent-color);
    float: left;
    margin-right: 12px;
    margin-top: 4px;
    line-height: 1;
}

.image-placeholder {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--border-light) 100%);
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%
    );
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.image-placeholder i {
    font-size: 80px;
    color: var(--text-muted);
    opacity: 0.5;
}

/* ==================== 组织体系 ==================== */
.organization-section {
    background-color: var(--bg-secondary);
}

.org-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.org-card {
    background-color: var(--bg-card);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.org-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.org-card:focus-within {
    box-shadow: var(--focus-ring);
}

.org-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(3, 105, 161, 0.25);
}

.org-icon i {
    font-size: 32px;
    color: white;
}

.org-card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.org-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    font-size: 15px;
}

.org-card a {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.org-card a:hover {
    color: var(--accent-dark);
}

.org-card a:focus-visible {
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

/* ==================== 科技成果 ==================== */
.achievements-section {
    background-color: var(--bg-primary);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.achievement-card {
    background-color: var(--bg-card);
    padding: 36px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-color) 0%, var(--accent-light) 100%);
}

.achievement-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.achievement-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.achievement-icon i {
    font-size: 24px;
    color: var(--accent-color);
}

.achievement-card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.achievement-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 15px;
}

.achievement-count {
    position: absolute;
    top: 24px;
    right: 24px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
    background: rgba(3, 105, 161, 0.1);
    padding: 6px 12px;
    border-radius: var(--radius-full);
}

.view-more {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.view-more:hover {
    color: var(--accent-dark);
}

/* ==================== 产业协同 ==================== */
.collaboration-section {
    background-color: var(--bg-secondary);
}

.collaboration-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.collab-item {
    background-color: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.collab-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.collab-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(3, 105, 161, 0.2);
}

.collab-icon i {
    font-size: 22px;
    color: white;
}

.collab-item h3 {
    font-family: var(--font-display);
    font-size: 17px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.collab-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 14px;
}

/* ==================== 合作伙伴 ==================== */
.partners-section {
    background-color: var(--bg-primary);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.partner-item {
    background-color: var(--bg-secondary);
    padding: 36px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    cursor: pointer;
}

.partner-item:hover {
    background-color: var(--bg-card);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: var(--accent-color);
}

.partner-item h4 {
    font-family: var(--font-display);
    font-size: 15px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.partner-item p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ==================== 页脚 ==================== */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-about h3,
.footer-links h3,
.footer-contact h3 {
    font-family: var(--font-display);
    font-size: 18px;
    margin-bottom: 20px;
    color: white;
    font-weight: 600;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    font-size: 15px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links ul li a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-links ul li a:focus-visible {
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

.footer-contact ul li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 14px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.footer-contact ul li i {
    margin-top: 4px;
    color: var(--accent-light);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 20px;
}

.btn-footer {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    color: white;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.btn-footer:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(3, 105, 161, 0.4);
}

.btn-footer:focus-visible {
    box-shadow: var(--focus-ring);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    margin-bottom: 8px;
}

/* ==================== 页面标题 ==================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(3, 105, 161, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(14, 165, 233, 0.2) 0%, transparent 40%);
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -1px;
}

.page-header p {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 4px;
    opacity: 0.8;
    font-weight: 600;
}

/* ==================== 基地介绍详细 ==================== */
.about-detail {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.about-content-full {
    max-width: 900px;
    margin: 0 auto;
}

.about-content-full h2 {
    font-family: var(--font-display);
    font-size: clamp(24px, 4vw, 32px);
    color: var(--text-primary);
    margin-bottom: 32px;
    position: relative;
    font-weight: 700;
}

.about-content-full h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    border-radius: 2px;
}

.about-content-full p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.9;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.highlight-item {
    text-align: center;
    padding: 32px 24px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    cursor: pointer;
}

.highlight-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.highlight-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.highlight-icon i {
    font-size: 26px;
    color: white;
}

.highlight-item h3 {
    font-family: var(--font-display);
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.highlight-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==================== 使命愿景 ==================== */
.mission-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.mission-card {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.mission-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.mission-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.mission-icon i {
    font-size: 28px;
    color: white;
}

.mission-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.mission-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

/* ==================== 时间轴 ==================== */
.timeline-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-color), var(--accent-light));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item:nth-child(odd) {
    justify-content: flex-start;
}

.timeline-item:nth-child(even) {
    justify-content: flex-end;
}

.timeline-date {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    color: white;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 14px;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(3, 105, 161, 0.3);
}

.timeline-content {
    width: 45%;
    padding: 32px;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
}

.timeline-content::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 4px var(--bg-primary);
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: calc(-50% - 8px);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: calc(-50% - 8px);
}

.timeline-content h3 {
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

/* ==================== 成果统计 ==================== */
.achievements-stats {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--secondary-color) 100%);
    color: white;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.achievements-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(3, 105, 161, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(14, 165, 233, 0.2) 0%, transparent 40%);
    pointer-events: none;
}

.achievements-stats .container {
    position: relative;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-card {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    background-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.stat-card .stat-icon {
    width: 56px;
    height: 56px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.stat-card .stat-icon i {
    font-size: 24px;
    color: white;
}

.stat-card .stat-number {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 14px;
    opacity: 0.85;
    font-weight: 500;
}

/* ==================== 专利成果 ==================== */
.patents-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.patent-card {
    background-color: var(--bg-card);
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.patent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
}

.patent-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.patent-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.patent-icon i {
    font-size: 22px;
    color: var(--accent-color);
}

.patent-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.patent-card h3 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
    font-weight: 600;
}

.patent-card p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

/* ==================== 获奖成果 ==================== */
.awards-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.award-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.award-card.featured {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
}

.award-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.award-badge {
    width: 100px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.award-card.featured .award-badge {
    background-color: rgba(255, 255, 255, 0.1);
    width: 120px;
}

.award-badge i {
    font-size: 36px;
    color: var(--accent-color);
}

.award-card.featured .award-badge i {
    color: white;
}

.award-content {
    padding: 28px;
    flex: 1;
}

.award-content h3 {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.award-card.featured .award-content h3 {
    font-size: 24px;
}

.award-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.7;
}

.award-card.featured .award-content p {
    color: rgba(255, 255, 255, 0.85);
}

.award-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.award-category,
.award-year {
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.award-card.featured .award-category,
.award-card.featured .award-year {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
}

/* ==================== 学术论文 ==================== */
.papers-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.papers-list {
    max-width: 900px;
    margin: 0 auto;
}

.paper-year-group {
    margin-bottom: 48px;
}

.paper-year-group h3 {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
}

.paper-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.paper-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(6px);
    border-color: var(--accent-color);
}

.journal-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.journal-icon i {
    font-size: 20px;
    color: white;
}

.paper-content {
    flex: 1;
}

.paper-content h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.5;
    font-weight: 600;
}

.paper-authors {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.paper-journal {
    color: var(--accent-color);
    font-size: 13px;
    font-weight: 600;
}

/* ==================== 在研项目 ==================== */
.research-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.project-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.project-icon i {
    font-size: 24px;
    color: white;
}

.project-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--border-color);
    opacity: 0.4;
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.project-tags .tag {
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

/* ==================== 产业协同详细 ==================== */
.collab-intro {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.intro-content {
    max-width: 800px;
    margin: 0 auto 60px;
    text-align: center;
}

.intro-content p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.9;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.intro-stat {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.intro-stat:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.intro-stat .stat-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.intro-stat .stat-icon i {
    font-size: 28px;
    color: white;
}

.intro-stat .stat-number {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.intro-stat .stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.collab-platforms {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.platform-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.platform-number {
    position: absolute;
    top: 16px;
    right: 20px;
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: var(--border-color);
    opacity: 0.2;
}

.platform-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.platform-icon i {
    font-size: 32px;
    color: var(--accent-color);
}

.platform-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.platform-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.platform-features {
    list-style: none;
    text-align: left;
    display: inline-block;
    margin-top: 16px;
}

.platform-features li {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.platform-features li i {
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-size: 12px;
}

.collab-partners {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.partners-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.partner-showcase-card {
    background-color: var(--bg-card);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.partner-showcase-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.partner-showcase-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 16px;
    font-weight: 600;
}

.partner-showcase-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 15px;
}

.partner-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.partner-link {
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.partner-link:hover {
    background-color: var(--accent-color);
    color: white;
}

.cooperation-models {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.model-card {
    background-color: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.model-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.model-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 12px rgba(3, 105, 161, 0.2);
}

.model-icon i {
    font-size: 24px;
    color: white;
}

.model-card h3 {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.model-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 合作伙伴详细页面 ==================== */
.partners-detail-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.partner-card {
    background-color: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    gap: 24px;
    align-items: flex-start;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.partner-card.main {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.05) 0%, rgba(14, 165, 233, 0.05) 100%);
    border-left: 4px solid var(--accent-color);
}

.partner-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.partner-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.partner-logo i {
    font-size: 28px;
    color: white;
}

.partner-content {
    flex: 1;
}

.partner-content h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.partner-desc {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 12px;
}

.partner-detail {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 16px;
}

.partner-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.partner-tags .tag {
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

/* ==================== 合作模式 ==================== */
.cooperation-mode {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.mode-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.mode-card {
    background-color: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
}

.mode-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.mode-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.mode-icon i {
    font-size: 26px;
    color: white;
}

.mode-card h3 {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.mode-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 招才引智 ==================== */
.talent-concept {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.concept-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.concept-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.concept-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(3, 105, 161, 0.25);
}

.concept-icon i {
    font-size: 32px;
    color: white;
}

.concept-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.concept-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.join-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.join-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.join-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.job-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.job-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.job-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.job-title {
    flex: 1;
}

.job-title h3 {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 10px;
    font-weight: 600;
}

.job-tag {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.job-salary {
    background-color: white;
    color: var(--accent-color);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 16px;
}

.job-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.job-detail-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.job-detail-item i {
    color: var(--accent-color);
}

.job-description {
    padding: 24px;
}

.job-description h4 {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 12px;
    margin-top: 20px;
    font-weight: 600;
}

.job-description h4:first-child {
    margin-top: 0;
}

.job-description ul {
    list-style: none;
}

.job-description li {
    color: var(--text-secondary);
    margin-bottom: 10px;
    padding-left: 24px;
    position: relative;
    font-size: 14px;
}

.job-description li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.btn-apply {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    color: white;
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
}

.btn-apply:hover {
    filter: brightness(1.1);
}

.btn-apply:focus-visible {
    box-shadow: var(--focus-ring);
}

.benefits-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.benefit-item {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.benefit-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.benefit-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(3, 105, 161, 0.25);
}

.benefit-icon i {
    font-size: 32px;
    color: white;
}

.benefit-item h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.benefit-item p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 联系我们 ==================== */
.contact-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.contact-form-wrapper,
.contact-info-wrapper {
    background-color: var(--bg-card);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.contact-form-wrapper h3,
.contact-info-wrapper h3 {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.contact-form-wrapper p,
.contact-info-wrapper p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group label span {
    color: var(--error-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: inherit;
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: var(--focus-ring);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    color: white;
    border: none;
    padding: 16px 28px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.btn-submit:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.btn-submit:focus-visible {
    box-shadow: var(--focus-ring);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 28px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 20px;
    color: white;
}

.contact-details h4 {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-weight: 600;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 0;
}

.map-placeholder {
    background-color: var(--bg-secondary);
    height: 180px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.map-placeholder i {
    font-size: 36px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.map-placeholder p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 4px;
}

.map-placeholder span {
    color: var(--text-muted);
    font-size: 12px;
}

.quick-contact {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.quick-contact h3 {
    font-family: var(--font-display);
    font-size: 18px;
    margin-bottom: 10px;
    color: white;
    font-weight: 600;
}

.quick-contact > p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 20px;
    line-height: 1.6;
}

.quick-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.quick-btn {
    background-color: white;
    color: var(--accent-color);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.quick-btn:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-btn:focus-visible {
    box-shadow: var(--focus-ring);
}

.quick-btn i {
    font-size: 16px;
}

/* ==================== 组织架构图 ==================== */
.org-structure {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.structure-diagram {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.structure-item {
    margin-bottom: 24px;
}

.structure-item.main {
    margin-bottom: 48px;
}

.structure-content {
    background-color: var(--bg-card);
    padding: 28px 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: inline-block;
    min-width: 280px;
    position: relative;
    border: 1px solid var(--border-color);
}

.structure-item.main .structure-content {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    padding: 36px 56px;
    border: none;
}

.structure-content i {
    font-size: 28px;
    margin-bottom: 10px;
}

.structure-content h3,
.structure-content h4 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
}

.structure-item.main .structure-content h3 {
    font-size: 22px;
}

.structure-row {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

/* ==================== 专家委员会 ==================== */
.committee-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.committee-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.committee-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.expert-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.expert-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.expert-avatar {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.expert-avatar i {
    font-size: 42px;
    color: var(--accent-color);
}

.expert-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.expert-title {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 14px;
}

.expert-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 专家智库 ==================== */
.expert-think-tank {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.think-tank-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.think-tank-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.stat-box {
    background-color: var(--bg-card);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.stat-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.stat-icon i {
    font-size: 24px;
    color: var(--accent-color);
}

.think-tank-desc h3 {
    font-family: var(--font-display);
    font-size: 26px;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 700;
}

.think-tank-desc p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
    font-size: 15px;
}

.think-tank-list {
    list-style: none;
}

.think-tank-list li {
    color: var(--text-secondary);
    margin-bottom: 14px;
    padding-left: 28px;
    position: relative;
    font-size: 15px;
}

.think-tank-list li i {
    position: absolute;
    left: 0;
    color: var(--accent-color);
    margin-top: 4px;
}

/* ==================== 基地主任 ==================== */
.director-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.director-card {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    align-items: flex-start;
    border: 1px solid var(--border-color);
}

.director-avatar {
    width: 280px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 56px 40px;
}

.director-avatar i {
    font-size: 100px;
    color: white;
    opacity: 0.9;
}

.director-info {
    flex: 1;
    padding: 48px;
}

.director-info h3 {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 700;
}

.director-title {
    color: var(--accent-color);
    font-size: 15px;
    margin-bottom: 10px;
    font-weight: 600;
}

.director-achievements {
    margin-top: 28px;
}

.director-achievements h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 18px;
    font-weight: 600;
}

.director-achievements ul {
    list-style: none;
}

.director-achievements li {
    color: var(--text-secondary);
    margin-bottom: 14px;
    padding-left: 28px;
    position: relative;
    font-size: 14px;
}

.director-achievements li i {
    position: absolute;
    left: 0;
    color: var(--accent-color);
    margin-top: 4px;
}

/* ==================== 基地成员 ==================== */
.members-section {
    background-color: var(--bg-secondary);
    padding: 80px 0;
}

.members-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.members-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.member-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.member-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(3, 105, 161, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.member-avatar i {
    font-size: 32px;
    color: var(--accent-color);
}

.member-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.member-role {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 14px;
}

.member-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 研究生团队 ==================== */
.students-section {
    background-color: var(--bg-primary);
    padding: 80px 0;
}

.students-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.student-stat {
    text-align: center;
}

.stat-circle {
    width: 140px;
    height: 140px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.2);
}

.stat-circle .stat-number {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: white;
}

.student-stat h3 {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.student-stat p {
    color: var(--text-secondary);
    font-size: 14px;
}

.research-areas {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.research-areas h3 {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 28px;
    font-weight: 600;
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tag {
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    padding: 10px 22px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.tag:hover {
    background-color: var(--accent-color);
    color: white;
}

/* ==================== 政策支持 ==================== */
.policy-section {
    padding: 80px 0;
    background-color: var(--bg-card);
}

.policy-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.policy-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.policy-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.policy-item {
    background-color: var(--bg-secondary);
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    gap: 20px;
    align-items: start;
    border: 1px solid transparent;
    cursor: pointer;
}

.policy-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.policy-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    flex-shrink: 0;
}

.policy-content h3 {
    font-family: var(--font-display);
    font-size: 17px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.policy-content p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 14px;
}

.policy-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.policy-type,
.policy-date {
    display: inline-block;
    padding: 5px 12px;
    background-color: rgba(3, 105, 161, 0.1);
    color: var(--accent-color);
    font-size: 12px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

/* ==================== 办公会职责 ==================== */
.office-section {
    padding: 80px 0;
    background-color: var(--bg-secondary);
}

.office-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.office-intro p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.office-responsibilities h3 {
    text-align: center;
    font-family: var(--font-display);
    font-size: 26px;
    margin-bottom: 36px;
    color: var(--text-primary);
    font-weight: 600;
}

.responsibility-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.responsibility-card {
    background-color: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.responsibility-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.resp-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 26px;
    margin: 0 auto 20px;
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.25);
}

.responsibility-card h4 {
    font-family: var(--font-display);
    font-size: 17px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.responsibility-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* ==================== 滚动动画 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        max-width: 500px;
    }
    
    .org-grid,
    .collaboration-list,
    .platforms-grid,
    .projects-grid,
    .patents-grid,
    .expert-grid,
    .members-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .concept-grid,
    .models-grid,
    .mode-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 600px;
        margin: 0 auto;
    }
    
    .responsibility-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .navbar {
        top: 12px;
        left: 12px;
        right: 12px;
    }
    
    .hero {
        margin-top: 88px;
        padding: 80px 0 60px;
    }
    
    .page-header {
        margin-top: 88px;
        padding: 100px 0 60px;
    }
    
    .about-grid,
    .think-tank-content,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-highlights {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mission-grid,
    .awards-grid,
    .partners-showcase,
    .jobs-grid {
        grid-template-columns: 1fr;
    }
    
    .award-card.featured {
        grid-column: 1;
    }
    
    .director-card {
        flex-direction: column;
    }
    
    .director-avatar {
        width: 100%;
        padding: 48px;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-stats {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto 60px;
    }
    
    .policy-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        top: 8px;
        left: 8px;
        right: 8px;
    }
    
    .navbar .container {
        padding: 12px 20px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 8px;
        right: 8px;
        width: auto;
        height: auto;
        max-height: calc(100vh - 100px);
        background-color: var(--bg-card);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-xl);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        overflow-y: auto;
        border: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu > li > a {
        padding: 14px 16px;
        width: 100%;
        justify-content: space-between;
    }
    
    .dropdown-content {
        position: static;
        box-shadow: none;
        padding: 0 0 0 16px;
        margin-top: 4px;
        border-left: 2px solid var(--border-color);
    }
    
    .dropdown:hover .dropdown-content {
        display: none;
    }
    
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        margin-top: 80px;
        padding: 60px 0 50px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-item {
        padding: 20px 12px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 13px;
    }
    
    .page-header {
        margin-top: 80px;
        padding: 80px 0 50px;
    }
    
    .page-header h1 {
        font-size: 28px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .org-grid,
    .achievements-grid,
    .collaboration-list,
    .partners-grid,
    .platforms-grid,
    .projects-grid,
    .patents-grid,
    .expert-grid,
    .members-grid,
    .concept-grid,
    .models-grid,
    .mode-grid,
    .benefits-grid,
    .responsibility-grid,
    .think-tank-stats {
        grid-template-columns: 1fr;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-date {
        position: relative;
        left: 0;
        transform: none;
        margin-bottom: 16px;
        display: inline-block;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        justify-content: flex-start;
        padding-left: 48px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: 100%;
        margin-left: 0;
        margin-right: 0;
    }
    
    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -36px;
        right: auto;
    }
    
    .paper-item {
        flex-direction: column;
        gap: 16px;
    }
    
    .job-header {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .job-details {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .contact-form-wrapper,
    .contact-info-wrapper,
    .quick-contact {
        padding: 28px;
    }
    
    .quick-actions {
        flex-direction: column;
    }
    
    .quick-btn {
        width: 100%;
        justify-content: center;
    }
    
    .contact-info-item {
        align-items: center;
        text-align: center;
    }
    
    .students-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    .stat-circle {
        width: 120px;
        height: 120px;
    }
    
    .stat-circle .stat-number {
        font-size: 36px;
    }
    
    .policy-item {
        flex-direction: column;
        text-align: center;
    }
    
    .policy-icon {
        margin: 0 auto;
    }
    
    .partner-card {
        flex-direction: column;
        text-align: center;
    }
    
    .partner-logo {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .logo p {
        font-size: 10px;
    }
    
    .hero-content h1 {
        font-size: 24px;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .org-card,
    .achievement-card,
    .collab-item,
    .partner-item,
    .mission-card,
    .stat-card,
    .patent-card,
    .project-card,
    .platform-card,
    .concept-card,
    .benefit-item,
    .expert-card,
    .member-card,
    .responsibility-card {
        padding: 28px 20px;
    }
    
    .footer {
        padding: 60px 0 32px;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
}