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

body {
    font-family: 'Roboto', sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    font-family: 'Orbitron', monospace;
    font-size: 1.8rem;
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #00d4ff;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: radial-gradient(ellipse at center, #1a1a2e 0%, #0a0a0a 70%);
}

.hero-content {
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-title {
    font-family: 'Orbitron', monospace;
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #00d4ff, #ff6b35, #00d4ff);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #cccccc;
    font-weight: 300;
}

.cta-button {
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.5);
}

/* 背景动画 */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #fff, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 4s ease-in-out infinite alternate;
}

.rocket-animation {
    position: absolute;
    right: 10%;
    top: 20%;
    width: 100px;
    height: 200px;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: rocketFloat 6s ease-in-out infinite;
}

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

@keyframes twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

@keyframes rocketFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* 火箭区域 */
.rockets-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rockets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.rocket-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.rocket-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.rocket-card:hover::before {
    left: 100%;
}

.rocket-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
    border-color: rgba(0, 212, 255, 0.3);
}

.rocket-image {
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 15px;
}

.rocket-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.rocket-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 212, 255, 0.1), rgba(255, 107, 53, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.rocket-card:hover .rocket-overlay {
    opacity: 1;
}

.rocket-icon {
    width: 60px;
    height: 90px;
    margin: 0 auto;
    position: relative;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.falcon9-icon {
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: rocketPulse 2s ease-in-out infinite;
}

.falconheavy-icon {
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: rocketPulse 2s ease-in-out infinite;
    position: relative;
}

.falconheavy-icon::before,
.falconheavy-icon::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 100px;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation: rocketPulse 2s ease-in-out infinite;
}

.falconheavy-icon::before {
    left: -40px;
    top: 10px;
}

.falconheavy-icon::after {
    right: -40px;
    top: 10px;
}

.starship-icon {
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    border-radius: 10px 10px 0 0;
    animation: rocketPulse 2s ease-in-out infinite;
}

.dragon-icon {
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    border-radius: 50px 50px 0 0;
    animation: rocketPulse 2s ease-in-out infinite;
}

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

.rocket-info h3 {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #00d4ff;
}

.rocket-description {
    color: #cccccc;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.rocket-specs {
    margin-bottom: 1.5rem;
}

.spec {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.spec-label {
    color: #888;
    font-weight: 500;
}

.spec-value {
    color: #00d4ff;
    font-weight: 600;
}

.learn-more-btn {
    background: transparent;
    border: 2px solid #00d4ff;
    color: #00d4ff;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    width: 100%;
}

.learn-more-btn:hover {
    background: #00d4ff;
    color: #0a0a0a;
    transform: translateY(-2px);
}

/* 任务成就区域 */
.missions-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #0a0a0a 0%, #16213e 50%, #0a0a0a 100%);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.achievement-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(255, 107, 53, 0.2);
    border-color: rgba(255, 107, 53, 0.3);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.achievement-card h3 {
    font-family: 'Orbitron', monospace;
    color: #ff6b35;
    margin-bottom: 1rem;
}

.achievement-card p {
    color: #cccccc;
    line-height: 1.6;
}

/* 关于区域 */
.about-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #0a0a0a 0%, #1a1a2e 100%);
}

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

.about-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #cccccc;
    margin-bottom: 3rem;
}

.mission-statement {
    background: rgba(0, 212, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.mission-statement h3 {
    font-family: 'Orbitron', monospace;
    color: #00d4ff;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.mission-statement p {
    font-style: italic;
    font-size: 1.1rem;
    color: #ffffff;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    animation: modalFadeIn 0.3s ease;
}

.modal-content {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    margin: 2% auto;
    padding: 0;
    border-radius: 25px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    position: relative;
    border: 2px solid rgba(0, 212, 255, 0.3);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
    overflow: hidden;
    animation: modalSlideIn 0.4s ease;
}

.modal-header {
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    padding: 2rem;
    text-align: center;
    position: relative;
}

.modal-header h2 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    color: #ffffff;
    margin: 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.modal-body {
    padding: 2rem;
    max-height: calc(90vh - 200px);
    overflow-y: auto;
}

.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, #00d4ff, #ff6b35);
    border-radius: 4px;
}

.close {
    color: #ffffff;
    float: right;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 20px;
    right: 25px;
    background: rgba(0, 0, 0, 0.3);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close:hover {
    background: rgba(255, 107, 53, 0.8);
    transform: rotate(90deg);
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalSlideIn {
    from { 
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes modalSlideOut {
    from { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to { 
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
}

/* 页脚 */
.footer {
    background: #0a0a0a;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: #888;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .rockets-grid {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .rocket-card {
        padding: 1.5rem;
    }
    
    .achievement-card {
        padding: 1.5rem;
    }
}