@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary: #0a1628;
    --secondary: #1a365d;
    --accent: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-gold: #f59e0b;
    --accent-cyan: #06b6d4;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(59, 130, 246, 0.2);
    --gradient-1: linear-gradient(135deg, #0a1628 0%, #1a365d 50%, #0f172a 100%);
    --gradient-2: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

[data-theme="light"] {
    --primary: #ffffff;
    --secondary: #f1f5f9;
    --accent: #2563eb;
    --accent-purple: #7c3aed;
    --accent-gold: #d97706;
    --accent-cyan: #0891b2;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --bg-dark: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(59, 130, 246, 0.15);
    --gradient-1: linear-gradient(135deg, #ffffff 0%, #f1f5f9 50%, #ffffff 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-gold: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.2);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    background: var(--gradient-1);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', 'Noto Sans SC', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-sm {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent);
}

.btn-secondary:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-3px);
}

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

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(245, 158, 11, 0.5);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

.logo-icon-wrapper {
    position: relative;
    width: 56px;
    height: 56px;
}

.logo-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    box-shadow: 
        0 0 30px rgba(59, 130, 246, 0.5),
        0 0 60px rgba(139, 92, 246, 0.3),
        inset 0 0 20px rgba(255, 255, 255, 0.1);
    animation: 
        logoPulse 2s ease-in-out infinite,
        logoFloat 3s ease-in-out infinite;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: var(--gradient-2);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.5;
    animation: logoRing 1.5s ease-out infinite;
}

.logo-icon::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(4px);
}

.logo-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    animation: orbitRotate 8s linear infinite;
}

.logo-orbit::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
}

.logo-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
}

.logo-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: particleFloat 2s ease-in-out infinite;
}

.logo-particle:nth-child(1) { top: 10%; left: 30%; animation-delay: 0s; }
.logo-particle:nth-child(2) { top: 20%; left: 70%; animation-delay: 0.3s; }
.logo-particle:nth-child(3) { top: 60%; left: 15%; animation-delay: 0.6s; }
.logo-particle:nth-child(4) { top: 70%; left: 80%; animation-delay: 0.9s; }
.logo-particle:nth-child(5) { top: 40%; left: 90%; animation-delay: 1.2s; }

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 900;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 30%, #06b6d4 60%, #f59e0b 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textShimmer 3s ease-in-out infinite;
    text-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
    letter-spacing: 2px;
    position: relative;
}

.logo-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: blur(8px);
    opacity: 0.6;
}

@keyframes logoPulse {
    0%, 100% {
        box-shadow: 
            0 0 30px rgba(59, 130, 246, 0.5),
            0 0 60px rgba(139, 92, 246, 0.3),
            inset 0 0 20px rgba(255, 255, 255, 0.1);
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        box-shadow: 
            0 0 40px rgba(59, 130, 246, 0.7),
            0 0 80px rgba(139, 92, 246, 0.5),
            inset 0 0 30px rgba(255, 255, 255, 0.15);
        transform: translate(-50%, -50%) scale(1.05);
    }
}

@keyframes logoFloat {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-5px); }
}

@keyframes logoRing {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

@keyframes orbitRotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes particleFloat {
    0%, 100% { 
        opacity: 0.3;
        transform: translateY(0) scale(1);
    }
    50% { 
        opacity: 1;
        transform: translateY(-8px) scale(1.2);
    }
}

@keyframes textShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    position: relative;
}

.nav-links li {
    position: relative;
    padding: 0 8px;
}

.nav-links li:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.3) 50%, transparent 100%);
}

.nav-links li:not(:last-child)::before {
    content: '';
    position: absolute;
    right: -3px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.5;
    box-shadow: 0 0 10px var(--accent);
    animation: navGlow 2s ease-in-out infinite;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    padding: 10px 15px;
    border-radius: 8px;
    transition: var(--transition-normal);
    letter-spacing: 0.5px;
}

.nav-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 8px;
    opacity: 0;
    transform: scale(0.95);
    transition: var(--transition-normal);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-purple) 100%);
    border-radius: 2px;
    transition: var(--transition-normal);
    box-shadow: 0 0 10px var(--accent);
}

.nav-links a:hover {
    color: var(--accent);
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.nav-links a:hover::before {
    opacity: 1;
    transform: scale(1);
}

.nav-links a:hover::after {
    width: 60%;
}

.nav-links a.active {
    color: var(--accent);
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.nav-links a.active::before {
    opacity: 1;
    transform: scale(1);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
}

.nav-links a.active::after {
    width: 80%;
    box-shadow: 0 0 15px var(--accent), 0 0 30px rgba(59, 130, 246, 0.3);
}

@keyframes navGlow {
    0%, 100% { 
        opacity: 0.5;
        box-shadow: 0 0 10px var(--accent);
    }
    50% { 
        opacity: 1;
        box-shadow: 0 0 20px var(--accent), 0 0 30px rgba(59, 130, 246, 0.5);
    }
}

.theme-toggle {
    position: relative;
    width: 88px;
    height: 42px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25) 0%, rgba(139, 92, 246, 0.25) 100%);
    border: 2px solid rgba(59, 130, 246, 0.4);
    border-radius: 21px;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    padding: 0;
    box-shadow: 
        inset 0 2px 10px rgba(0, 0, 0, 0.2),
        0 4px 20px rgba(59, 130, 246, 0.2);
}

.theme-toggle:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.35) 0%, rgba(139, 92, 246, 0.35) 100%);
    box-shadow: 
        inset 0 2px 10px rgba(0, 0, 0, 0.2),
        0 0 30px rgba(59, 130, 246, 0.4),
        0 4px 25px rgba(139, 92, 246, 0.3);
    transform: translateY(-2px);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 5px;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border-radius: 50%;
    transition: var(--transition-normal);
    box-shadow: 
        0 0 15px rgba(59, 130, 246, 0.6),
        inset 0 2px 4px rgba(255, 255, 255, 0.3);
}

.theme-toggle.light::before {
    left: calc(100% - 35px);
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 
        0 0 15px rgba(251, 191, 36, 0.6),
        inset 0 2px 4px rgba(255, 255, 255, 0.4);
}

.theme-toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    border-radius: 16px;
    pointer-events: none;
}

.theme-toggle-icon {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    font-size: 1.15rem;
    gap: 20px;
}

.theme-toggle-icon i:first-child {
    color: var(--text-muted);
    transition: var(--transition-fast);
    text-shadow: 0 0 10px transparent;
}

.theme-toggle-icon i:last-child {
    color: var(--text-muted);
    transition: var(--transition-fast);
    text-shadow: 0 0 10px transparent;
}

.theme-toggle:not(.light) .theme-toggle-icon i:first-child {
    color: var(--accent-cyan);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.5);
}

.theme-toggle.light .theme-toggle-icon i:last-child {
    color: var(--accent-gold);
    text-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

[data-theme="light"] .header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .nav-links li:not(:last-child)::after {
    background: linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.25) 50%, transparent 100%);
}

[data-theme="light"] .nav-links a {
    color: var(--text-secondary);
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a.active {
    color: var(--accent);
}

[data-theme="light"] .nav-links a::before {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
}

[data-theme="light"] .nav-links a.active::before {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12) 0%, rgba(124, 58, 237, 0.12) 100%);
}

[data-theme="light"] .theme-toggle {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(124, 58, 237, 0.15) 100%);
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 
        inset 0 2px 10px rgba(0, 0, 0, 0.05),
        0 4px 20px rgba(37, 99, 235, 0.1);
}

[data-theme="light"] .theme-toggle:hover {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.25) 0%, rgba(124, 58, 237, 0.25) 100%);
}

[data-theme="light"] .hero-content h1,
[data-theme="light"] .hero-content p {
    color: var(--text-primary);
}

[data-theme="light"] .card {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(59, 130, 246, 0.15);
}

[data-theme="light"] .card-title {
    color: var(--text-primary);
}

[data-theme="light"] .card-text {
    color: var(--text-secondary);
}

[data-theme="light"] .btn-primary {
    color: white;
}

[data-theme="light"] .btn-secondary {
    color: var(--text-primary);
    border-color: var(--accent);
}

[data-theme="light"] .btn-secondary:hover {
    color: white;
}

[data-theme="light"] .hero-title {
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

[data-theme="light"] .hero-subtitle {
    color: var(--text-secondary);
}

[data-theme="light"] .section-title {
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

[data-theme="light"] .section-subtitle {
    color: var(--text-secondary);
}

[data-theme="light"] .page-title {
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .page-subtitle {
    color: var(--text-secondary);
}

[data-theme="light"] .stat-item {
    color: var(--text-primary);
}

[data-theme="light"] .stat-number {
    color: var(--accent);
}

[data-theme="light"] .timeline-item::before {
    background: var(--accent);
}

[data-theme="light"] .timeline-item::after {
    border-color: var(--accent);
}

[data-theme="light"] .knowledge-card {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(59, 130, 246, 0.15);
}

[data-theme="light"] .knowledge-card:hover {
    border-color: var(--accent);
}

[data-theme="light"] .filter-btn {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--text-secondary);
}

[data-theme="light"] .filter-btn.active,
[data-theme="light"] .filter-btn:hover {
    background: var(--gradient-2);
    color: white;
}

[data-theme="light"] .breadcrumb {
    background: rgba(248, 250, 252, 0.9);
    border-color: rgba(59, 130, 246, 0.15);
}

[data-theme="light"] .breadcrumb a {
    color: var(--accent);
}

[data-theme="light"] .breadcrumb span:last-child {
    color: var(--text-primary);
}

[data-theme="light"] .footer {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

[data-theme="light"] .footer-link {
    color: var(--text-secondary);
}

[data-theme="light"] .footer-link:hover {
    color: var(--accent);
}

[data-theme="light"] .footer-copyright {
    color: var(--text-muted);
}

[data-theme="light"] .mobile-menu {
    background: rgba(255, 255, 255, 0.98);
}

[data-theme="light"] .mobile-menu a {
    color: var(--text-primary);
}

[data-theme="light"] .mobile-menu a:hover,
[data-theme="light"] .mobile-menu a.active {
    color: var(--accent);
}

[data-theme="light"] .mobile-menu-close {
    color: #1e293b;
}

[data-theme="light"] .figure-card {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(59, 130, 246, 0.1);
}

[data-theme="light"] .figure-name {
    color: var(--text-primary);
}

[data-theme="light"] .figure-title {
    color: var(--accent);
}

[data-theme="light"] .figure-desc {
    color: var(--text-secondary);
}

[data-theme="light"] .figure-stats span {
    color: var(--text-primary);
}

[data-theme="light"] .figure-stats span:first-child {
    color: var(--text-secondary);
}

[data-theme="light"] .figure-achievements span {
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
}

[data-theme="light"] .figure-timeline-item {
    border-color: rgba(59, 130, 246, 0.2);
}

[data-theme="light"] .figure-timeline-year {
    color: var(--accent);
}

[data-theme="light"] .figure-timeline-title {
    color: var(--text-primary);
}

[data-theme="light"] .figure-timeline-desc {
    color: var(--text-secondary);
}

[data-theme="light"] .article-title {
    color: var(--text-primary);
}

[data-theme="light"] .article-excerpt {
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 28px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 22, 40, 0.98);
    z-index: 9999;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 80px;
    gap: 25px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.mobile-menu a:hover {
    color: var(--accent);
}

.mobile-menu-close {
    position: absolute;
    top: 30px;
    right: 30px;
    font-size: 2rem;
    color: var(--text-primary);
    cursor: pointer;
    background: none;
    border: none;
    z-index: 1000;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.stars-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 0;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

.shooting-star {
    position: absolute;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    animation: shoot 3s linear infinite;
    opacity: 0;
}

@keyframes shoot {
    0% { transform: translateX(-100px) translateY(0); opacity: 0; }
    10% { opacity: 1; }
    30% { opacity: 0; transform: translateX(500px) translateY(200px); }
    100% { opacity: 0; }
}

.orbit-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
}

.star-orbit {
    position: absolute;
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: 50%;
    animation: rotateOrbit linear infinite;
}

@keyframes rotateOrbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.satellite {
    position: absolute;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.6), 0 0 30px rgba(59, 130, 246, 0.3);
    animation: satelliteGlow 2s ease-in-out infinite;
}

.satellite::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -30px;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.8), transparent);
    transform: translateY(-50%);
}

@keyframes satelliteGlow {
    0%, 100% { box-shadow: 0 0 15px rgba(59, 130, 246, 0.6), 0 0 30px rgba(59, 130, 246, 0.3); }
    50% { box-shadow: 0 0 25px rgba(59, 130, 246, 0.9), 0 0 50px rgba(59, 130, 246, 0.5); }
}

.satellite-trail {
    position: absolute;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.8), transparent);
    opacity: 0.6;
}

.space-debris {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: debrisFloat linear infinite;
}

@keyframes debrisFloat {
    0% { transform: translateX(0) translateY(0); opacity: 0.3; }
    50% { opacity: 0.8; }
    100% { transform: translateX(100px) translateY(-50px); opacity: 0.3; }
}

.aurora {
    position: absolute;
    width: 600px;
    height: 300px;
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 50%, transparent 100%);
    border-radius: 50%;
    animation: auroraWave 8s ease-in-out infinite;
    filter: blur(40px);
}

@keyframes auroraWave {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.5; }
    50% { transform: scale(1.2) rotate(5deg); opacity: 0.8; }
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 900px;
    padding: 0 20px;
    position: relative;
}

.hero-icon {
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: 
        0 0 40px rgba(59, 130, 246, 0.6),
        0 0 80px rgba(139, 92, 246, 0.4),
        inset 0 0 20px rgba(255, 255, 255, 0.2);
    animation: heroIconFloat 3s ease-in-out infinite;
}

@keyframes heroIconFloat {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-15px);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--accent);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #93c5fd 50%, #c4b5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator i {
    font-size: 1.5rem;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    padding: 120px 0;
    position: relative;
}

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

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--accent-purple);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 15px;
    background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 900px;
    margin: 0 auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.2);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-glow);
}

.feature-card:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
}

.feature-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.article-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(transparent, rgba(10, 22, 40, 0.8));
}

.article-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent);
    color: white;
    padding: 5px 15px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
}

.article-content {
    padding: 25px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.article-title {
    font-size: 1.3rem;
    margin-bottom: 12px;
    transition: var(--transition-fast);
}

.article-card:hover .article-title {
    color: var(--accent);
}

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.article-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-weight: 600;
}

.article-link:hover {
    gap: 12px;
}

.stats-section {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(139, 92, 246, 0.04) 50%, rgba(59, 130, 246, 0.06) 100%);
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--accent-gold);
    margin-bottom: 15px;
}

.stat-number {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.footer {
    background: rgba(10, 22, 40, 0.9);
    padding: 80px 0 30px;
    border-top: 1px solid var(--card-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-about {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-title {
    font-size: 1.2rem;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links li {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.footer-links li i {
    width: 16px;
    text-align: center;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 45px;
    height: 45px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

.footer-links-section {
    margin-top: 40px;
    margin-bottom: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
}

.footer-links-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.footer-friend-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: 25px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-friend-link:hover {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.footer-friend-link i {
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
    color: var(--text-muted);
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-bottom img {
    vertical-align: middle;
    margin-right: 5px;
}

.beian-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    font-size: 0.9rem;
}

.beian-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.beian-separator {
    color: var(--text-muted);
    opacity: 0.5;
}

.page-header {
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(10, 22, 40, 0.8) 0%, transparent 100%);
    z-index: 0;
}

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

.page-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 15px;
    background: linear-gradient(135deg, #fff 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    margin-bottom: 25px;
    color: var(--text-muted);
    padding: 12px 20px;
    background: rgba(30, 41, 59, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    backdrop-filter: blur(10px);
    width: 100%;
}

.breadcrumb::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    border-radius: 12px;
    pointer-events: none;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    position: relative;
}

.breadcrumb a {
    color: var(--accent);
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 6px;
    transition: var(--transition-fast);
    position: relative;
}

.breadcrumb a:hover {
    color: var(--accent-cyan);
    background: rgba(59, 130, 246, 0.1);
    text-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.breadcrumb i {
    margin: 0 10px;
    font-size: 0.85rem;
    color: rgba(59, 130, 246, 0.4);
    position: relative;
}

.breadcrumb i::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0;
    box-shadow: 0 0 10px var(--accent);
    transition: var(--transition-fast);
}

.breadcrumb:hover i::after {
    opacity: 0.6;
}

.breadcrumb span:last-child {
    color: var(--text-primary);
    font-weight: 600;
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 6px;
    position: relative;
}

.breadcrumb span:last-child::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 4px;
    height: 4px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-cyan);
    animation: breadcrumbPulse 2s ease-in-out infinite;
}

@keyframes breadcrumbPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

.knowledge-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 12px 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 50px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.knowledge-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

.knowledge-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.knowledge-card-image {
    height: 200px;
    overflow: hidden;
}

.knowledge-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.knowledge-card:hover .knowledge-card-image img {
    transform: scale(1.1);
}

.knowledge-card-content {
    padding: 25px;
}

.knowledge-card-tag {
    display: inline-block;
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-purple);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.knowledge-card-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.knowledge-card-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.knowledge-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.spacecraft-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 50px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 20px;
}

.tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -21px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--accent);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.spacecraft-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 45px;
    margin-top: 30px;
}

.spacecraft-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

.spacecraft-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.spacecraft-image {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.spacecraft-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.spacecraft-card:hover .spacecraft-image img {
    transform: scale(1.1);
}

.spacecraft-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent-gold);
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
}

.spacecraft-content {
    padding: 25px;
}

.spacecraft-title {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.spacecraft-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.spacecraft-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.spacecraft-stat {
    background: rgba(59, 130, 246, 0.1);
    padding: 12px;
    border-radius: var(--radius-sm);
}

.spacecraft-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.spacecraft-stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.figures-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.figure-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    transition: var(--transition-normal);
}

.figure-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.figure-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--accent);
    box-shadow: var(--shadow-glow);
}

.figure-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.figure-name {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.figure-title {
    color: var(--accent-gold);
    font-weight: 600;
    margin-bottom: 15px;
}

.figure-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

.figure-achievements {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 15px;
}

.figure-achievement {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
}

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

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

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    display: flex;
    justify-content: flex-end;
    padding-left: 50%;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-left: 0;
    padding-right: 50%;
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 30px;
    max-width: 400px;
    position: relative;
    transition: var(--transition-normal);
}

.timeline-content:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 40px;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 40px;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--accent);
    border-radius: 50%;
    border: 4px solid var(--primary);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    z-index: 1;
}

.timeline-year {
    display: inline-block;
    background: var(--gradient-2);
    color: white;
    padding: 5px 15px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.timeline-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.timeline-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 3px solid var(--accent);
    border-radius: var(--radius-lg);
    opacity: 0.5;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.about-feature-text {
    font-weight: 600;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.team-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    transition: var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent);
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-name {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.team-role {
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 10px;
}

.team-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    transition: var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 20px;
}

.contact-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.contact-info {
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
}

.pagination-btn {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.pagination-page {
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.pagination-page:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination-page.active {
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.pagination-dots {
    color: var(--text-muted);
}

/* 分页样式 - 适配Bootstrap结构 */
.pagination.justify-content-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 50px 0;
    padding: 30px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.06) 0%, rgba(139, 92, 246, 0.04) 50%, rgba(59, 130, 246, 0.06) 100%);
    border-radius: 16px;
    border: 1px solid rgba(59, 130, 246, 0.15);
    list-style: none;
    flex-wrap: wrap;
}

.pagination.justify-content-center .page-item {
    display: flex;
    align-items: center;
}

.pagination.justify-content-center .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
}

.pagination.justify-content-center .page-link:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.pagination.justify-content-center .page-item.active .page-link {
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

.pagination.justify-content-center .page-item.disabled .page-link {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination.justify-content-center .jumpto {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 20px;
}

.pagination.justify-content-center .jumpto .page_number {
    width: 70px;
    height: 44px;
    padding: 0 12px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    text-align: center;
    outline: none;
    transition: var(--transition-normal);
}

.pagination.justify-content-center .jumpto .page_number:focus {
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.pagination.justify-content-center .jumpto .submit {
    height: 44px;
    padding: 0 20px;
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.pagination.justify-content-center .jumpto .submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.5);
}

@media (max-width: 768px) {
    .pagination.justify-content-center {
        padding: 20px 15px;
        gap: 6px;
    }

    .pagination.justify-content-center .page-link {
        min-width: 38px;
        height: 38px;
        padding: 0 12px;
        font-size: 0.85rem;
    }

    .pagination.justify-content-center .jumpto {
        margin-left: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .pagination.justify-content-center .jumpto .page_number {
        width: 60px;
        height: 38px;
    }

    .pagination.justify-content-center .jumpto .submit {
        height: 38px;
        padding: 0 15px;
    }
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.download-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.download-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.2);
}

.download-card-icon {
    padding: 30px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-card-icon i {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-card-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.download-card-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 15px;
    width: fit-content;
}

.download-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

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

.download-card-title a:hover {
    color: var(--accent);
}

.download-card-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.download-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.download-card-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    width: 100%;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    color: white;
}

@media (max-width: 768px) {
    .download-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .download-card-icon {
        padding: 20px;
    }

    .download-card-icon i {
        font-size: 3rem;
    }

    .download-card-content {
        padding: 20px;
    }

    .download-card-title {
        font-size: 1.1rem;
    }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.5);
}

.search-modal {
    position: fixed;
    inset: 0;
    background: rgba(10, 22, 40, 0.95);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 150px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.search-modal.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    width: 100%;
    max-width: 600px;
    padding: 0 20px;
}

.search-input-wrapper {
    position: relative;
}

.search-input {
    width: 100%;
    padding: 20px 60px 20px 25px;
    background: var(--card-bg);
    border: 2px solid var(--accent);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.2rem;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-close {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.search-close:hover {
    color: var(--accent);
}

@media (max-width: 1200px) {
    .nav-links li {
        padding: 0 12px;
    }
    
    .nav-links a {
        font-size: 0.9rem;
        padding: 8px 10px;
    }
}

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .about-section {
        grid-template-columns: 1fr;
    }

    .about-section .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        padding: 0 10px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .section {
        padding: 80px 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-about {
        max-width: 100%;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }

    .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }

    .timeline-dot {
        left: 20px;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .articles-grid,
    .knowledge-grid,
    .spacecraft-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.2rem;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-card,
    .article-card,
    .knowledge-card {
        padding: 25px 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

.loading {
    position: fixed;
    inset: 0;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--card-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}