:root {
    --silver: #C0C0C0;
    --chrome: #D4AF37;
    --copper: #CD7F32;
    --dark-bg: #1A1A1A;
    --card-bg: #2D2D2D;
    --text-primary: #F5F5F5;
    --text-secondary: #B0B0B0;
    --accent-gold: #DAA520;
    --metal-gradient: linear-gradient(135deg, #C0C0C0, #808080);
    --chrome-glow: 0 0 20px rgba(212, 175, 55, 0.6);
    --copper-glow: 0 0 20px rgba(205, 127, 50, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 2px solid var(--chrome);
    padding: 12px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--chrome), var(--copper));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg {
    width: 35px;
    height: 35px;
    fill: var(--chrome);
    animation: rotate 15s linear infinite;
}

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

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--chrome);
    transition: width 0.3s ease;
}

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

.nav-links a:hover {
    color: var(--chrome);
}

/* Hero Section with Carousel */
.hero {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* 轮播图容器 */
.carousel-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.7) 50%, rgba(26, 26, 26, 0.5) 100%);
}

/* 轮播图导航箭头 */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--chrome);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
}

.carousel-nav:hover {
    background: rgba(212, 175, 55, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.carousel-nav svg {
    width: 24px;
    height: 24px;
    fill: var(--chrome);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* 轮播图指示点 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid var(--chrome);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--chrome);
    transform: scale(1.2);
    box-shadow: var(--chrome-glow);
}

.indicator:hover {
    background: var(--chrome);
}

/* Hero内容 */
.hero-content {
    position: relative;
    z-index: 5;
    padding: 120px 20px 60px;
    height: 100%;
    display: flex;
    align-items: center;
}

.hero-text {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--chrome), var(--copper));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 30px;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-stats {
    display: flex;
    gap: 50px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    background: rgba(0, 0, 0, 0.4);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(212, 175, 55, 0.3);
    backdrop-filter: blur(5px);
}

.stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--chrome);
    text-shadow: var(--chrome-glow);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* 摩托车展示区 */
.motorcycle-showcase {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--dark-bg) 0%, #252525 100%);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.bike-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid var(--chrome);
    transition: all 0.4s ease;
    position: relative;
}

.bike-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--chrome-glow);
}

.bike-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
}

.bike-content {
    padding: 25px;
}

.bike-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    color: var(--chrome);
    margin-bottom: 10px;
}

.bike-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.spec-item {
    padding: 8px 12px;
    background: rgba(192, 192, 192, 0.1);
    border-radius: 8px;
}

.spec-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 3px;
}

.spec-value {
    font-family: 'Orbitron', sans-serif;
    color: var(--chrome);
    font-weight: 600;
}

/* Section 统一规范 */
section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    position: relative;
    text-align: center;
    color: var(--chrome);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--chrome), var(--copper));
}

/* 关于我 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    align-items: start;
}

.profile-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--chrome-glow);
    border: 2px solid var(--chrome);
}

.profile-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--chrome);
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.timeline {
    margin-top: 30px;
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--chrome), var(--copper));
}

.timeline-item {
    position: relative;
    margin-bottom: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--chrome);
    border-radius: 50%;
    box-shadow: var(--chrome-glow);
}

.timeline-date {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    color: var(--chrome);
    margin-bottom: 5px;
}

/* 技术项目 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    border: 2px solid var(--chrome);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--chrome), var(--copper));
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--chrome-glow);
    border-color: var(--copper);
}

.project-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--silver);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.tag {
    padding: 5px 15px;
    background: rgba(212, 175, 55, 0.2);
    border: 1px solid var(--chrome);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--chrome);
}

/* 骑行日志 */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.blog-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--chrome-glow);
    border-color: var(--chrome);
}

.blog-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.blog-content {
    padding: 25px;
}

.blog-date {
    font-family: 'Rajdhani', sans-serif;
    color: var(--chrome);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.blog-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--silver);
}

.blog-excerpt {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* 技术分享 */
.tech-shares {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.tech-share-item {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    border-left: 3px solid var(--chrome);
    transition: all 0.3s ease;
}

.tech-share-item:hover {
    transform: translateX(10px);
    border-left-color: var(--copper);
    box-shadow: var(--copper-glow);
}

.tech-share-item h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--silver);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.tech-share-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 联系方式 */
.contact-section {
    background: linear-gradient(135deg, var(--card-bg), #3D3D3D);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--chrome);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 10px;
    border: 1px solid var(--chrome);
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(212, 175, 55, 0.2);
    box-shadow: var(--chrome-glow);
}

.contact-icon {
    width: 40px;
    height: 40px;
    margin-right: 15px;
    fill: var(--chrome);
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(192, 192, 192, 0.1);
    border: 2px solid var(--chrome);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link:hover {
    background: var(--chrome);
    transform: translateY(-5px);
    box-shadow: var(--chrome-glow);
}

.social-link svg {
    width: 24px;
    height: 24px;
    fill: var(--silver);
}

/* 表单样式 */
.contact-form {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 15px;
    border: 2px solid var(--chrome);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 12px;
    background: rgba(45, 45, 45, 0.8);
    border: 1px solid var(--chrome);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--copper);
    box-shadow: var(--copper-glow);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--chrome), var(--copper));
    border: none;
    border-radius: 8px;
    color: var(--dark-bg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Orbitron', sans-serif;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--chrome-glow);
}

/* Center alignment */
.center {
    text-align: center;
    margin: 40px 0;
}

/* More button */
.btn-more {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--chrome), var(--copper));
    color: var(--dark-bg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    border: 2px solid var(--chrome);
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-more:hover {
    transform: translateY(-2px);
    box-shadow: var(--chrome-glow);
    background: linear-gradient(135deg, var(--copper), var(--chrome));
}

/* Footer */
footer {
    background: rgba(26, 26, 26, 0.98);
    padding: 40px 0;
    margin-top: 80px;
    border-top: 2px solid var(--chrome);
}

.footer-content {
    text-align: center;
}

.footer-content p {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-stats {
        gap: 20px;
    }

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

    .nav-links {
        display: none;
    }

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

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

    .carousel-nav {
        width: 40px;
        height: 40px;
    }

    .carousel-nav svg {
        width: 20px;
        height: 20px;
    }
}

/* 巡航摩托特定样式 */
.cruiser-badge {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, var(--chrome), var(--copper));
    color: var(--dark-bg);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.cruiser-specs {
    background: rgba(192, 192, 192, 0.1);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid var(--chrome);
    margin-top: 20px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(192, 192, 192, 0.1);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    color: var(--text-secondary);
}

.spec-value {
    font-family: 'Orbitron', sans-serif;
    color: var(--chrome);
}

/* 齿轮装饰 */
.gear {
    position: fixed;
    opacity: 0.03;
    z-index: 0;
    pointer-events: none;
}

.gear-1 {
    top: 20%;
    right: -80px;
    width: 200px;
}

.gear-2 {
    bottom: 30%;
    left: -60px;
    width: 150px;
    animation-direction: reverse;
}