/* ========================================
   包豪斯风格个人作品集网站样式
   设计理念：功能至上、极简几何、无装饰主义
   ======================================== */

/* CSS变量定义 - 包豪斯色彩系统 */
:root {
    /* 主色调 - 黑白灰 */
    --color-black: #0a0a0a;
    --color-dark-gray: #1a1a1a;
    --color-medium-gray: #666666;
    --color-light-gray: #999999;
    --color-lighter-gray: #e5e5e5;
    --color-off-white: #f5f5f5;
    --color-white: #ffffff;
    
    /* 点缀色 - 高饱和蓝色 */
    --color-accent: #0066ff;
    --color-accent-hover: #0052cc;
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* 间距系统 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 网格 */
    --container-max-width: 1400px;
    --grid-gap: 2rem;
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ========================================
   导航栏样式
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-lighter-gray);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--color-black);
    transition: var(--transition-normal);
    position: relative;
}

.nav-logo::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-normal);
}

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

.nav-menu {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-medium-gray);
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition-normal);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-black);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    position: relative;
    width: 30px;
    height: 30px;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    position: relative;
    transition: var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-normal);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle.active .hamburger {
    background-color: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* ========================================
   首页英雄区样式
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: calc(70px + var(--space-xl)) var(--space-md) var(--space-xl);
    position: relative;
    background-color: #000000;
    color: #ffffff;
    overflow: hidden;
}

.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100vw;
    height: 56.25vw;
    min-height: 100vh;
    min-width: 177.77vh;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease forwards;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.title-line {
    display: block;
    color: #ffae00;
}

.title-line:last-child {
    color: #ffae00;
}

.hero-subtitle {
    font-size: 1.125rem;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.hero-divider {
    width: 60px;
    height: 3px;
    background-color: #ffffff;
    margin: 0 auto var(--space-md);
}

.hero-description {
    font-size: 1rem;
    color: #cccccc;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* 滚动提示 */
.hero-scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    animation: bounce 2s infinite;
    z-index: 1;
}

.scroll-text {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: #cccccc;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, #cccccc, transparent);
}

/* ========================================
   作品集区域样式
   ======================================== */
.works-section {
    padding: var(--space-2xl) var(--space-md);
    background-color: #000000;
    color: #ffffff;
}

.section-header {
    max-width: var(--container-max-width);
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xs);
}

.section-subtitle {
    font-size: 0.875rem;
    font-weight: 500;
    color: #cccccc;
    letter-spacing: 0.1em;
}

/* 作品网格 */
.works-grid {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap);
    justify-content: center;
}

/* 个人项目网格 - 优化居中显示 */
.personal-projects-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--grid-gap);
}

.personal-projects-grid .work-card {
    flex: 0 1 calc(33.333% - var(--grid-gap));
    max-width: 400px;
}

/* 作品卡片 */
.work-card {
    display: block;
    background-color: #1a1a1a;
    border: 1px solid #333333;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.work-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid transparent;
    transition: var(--transition-normal);
    pointer-events: none;
    z-index: 2;
}

.work-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(255, 174, 0, 0.2);
}

.work-card:hover::before {
    border-color: #ffae00;
}

.work-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

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

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

.work-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 174, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.work-view {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: #000000;
    padding: var(--space-sm) var(--space-md);
    border: 2px solid #000000;
}

.work-info {
    padding: var(--space-md);
}

.work-title {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xs);
    color: #ffffff;
    text-align: center;
}

.work-category {
    font-size: 0.875rem;
    color: #cccccc;
    font-weight: 500;
}

/* ========================================
   工作项目视频展示区样式
   ======================================== */
.work-video-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-lg) 0;
}

.video-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    background-color: #1a1a1a;
    border: 1px solid #333333;
    overflow: hidden;
    transition: var(--transition-normal);
}

.video-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(255, 174, 0, 0.2);
}

.work-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: var(--space-xl);
    color: #ffffff;
}

.video-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
    color: #ffffff;
}

.video-description {
    font-size: 1rem;
    color: #cccccc;
    margin: 0;
}

.work-video-intro {
    text-align: center;
    color: var(--color-gray);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-top: var(--space-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   关于我区域样式
   ======================================== */
.about-section {
    padding: var(--space-2xl) var(--space-md);
    background-color: #000000;
    color: #ffffff;
}

.about-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-left {
    position: sticky;
    top: 100px;
}

.about-photos {
    margin-top: var(--space-lg);
}

.photo-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
    border: 1px solid #333333;
    aspect-ratio: 4/5;
}

.slider-container {
    position: relative;
    height: 100%;
}

.slider-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    animation: fade 15s infinite;
}

.slider-img:nth-child(1) {
    animation-delay: 0s;
}

.slider-img:nth-child(2) {
    animation-delay: 5s;
}

.slider-img:nth-child(3) {
    animation-delay: 10s;
}

@keyframes fade {
    0% {
        opacity: 0;
    }
    6.67% {
        opacity: 1;
    }
    33.33% {
        opacity: 1;
    }
    40% {
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

.about-right {
    max-width: 700px;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: #cccccc;
    margin-bottom: var(--space-md);
}

.about-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.about-tags {
    font-size: 1rem;
    color: #888888;
    margin-bottom: var(--space-lg);
    letter-spacing: 0.05em;
}

.tag {
    color: #ffffff;
    font-weight: 500;
}

.about-description {
    font-size: 1.125rem;
    line-height: 2;
    color: #cccccc;
    margin-bottom: var(--space-lg);
}

.highlight {
    color: #ffae00;
    font-weight: 600;
    padding: 0 4px;
}

.about-software {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #999999;
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid #333333;
}

.about-stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid #333333;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #ffae00;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: #ffffff;
    font-weight: 500;
}

/* ========================================
   底部样式
   ======================================== */
.footer {
    padding: var(--space-2xl) var(--space-md);
    background-color: var(--color-black);
    color: var(--color-white);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.footer-top {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.footer-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.footer-email {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
    position: relative;
    display: inline-block;
    transition: var(--transition-normal);
}

.footer-email::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-normal);
}

.footer-email:hover {
    color: var(--color-white);
}

.footer-email:hover::after {
    width: 100%;
}

.contact-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.contact-item {
    font-size: 1rem;
    color: var(--color-light-gray);
}

.contact-divider {
    color: var(--color-dark-gray);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-dark-gray);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-light-gray);
    transition: var(--transition-normal);
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-white);
    transition: var(--transition-normal);
}

.footer-link:hover {
    color: var(--color-white);
}

.footer-link:hover::after {
    width: 100%;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-medium-gray);
    letter-spacing: 0.05em;
}

/* ========================================
   作品详情页样式
   ======================================== */
.detail-main {
    background-color: #000000;
}

.detail-hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
    background-color: #000000;
}

.detail-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    width: 100%;
}

.detail-header {
    margin-bottom: var(--space-xl);
}

.detail-category {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.detail-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
    color: #ffffff;
}

.detail-meta {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.meta-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-light-gray);
}

.meta-value {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
}

.detail-image-main {
    width: 100%;
    max-height: 70vh;
    object-fit: cover;
    margin-top: var(--space-xl);
}

.detail-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-md);
}

.detail-section {
    margin-bottom: var(--space-xl);
}

.detail-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: #ffffff;
}

.detail-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: #cccccc;
    margin-bottom: var(--space-md);
}

.detail-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--grid-gap);
    margin-top: var(--space-xl);
}

.detail-gallery img,
.detail-gallery video {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.detail-gallery video {
    aspect-ratio: 16/9;
    border: 1px solid #333333;
}

.back-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #cccccc;
    margin-bottom: var(--space-lg);
    transition: var(--transition-normal);
}

.back-button:hover {
    color: #ffffff;
}

.back-button svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
}

.back-button:hover svg {
    transform: translateX(-4px);
}

/* 作品导航 */
.detail-navigation {
    padding: var(--space-xl) var(--space-md);
    background-color: #000000;
    border-top: 1px solid #333333;
}

.back-to-works {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #cccccc;
    margin: 0 auto;
    transition: var(--transition-normal);
}

.back-to-works:hover {
    color: #ffffff;
}

.back-to-works svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
}

.back-to-works:hover svg {
    transform: translateX(-4px);
}

.nav-works {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-work-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-md);
    transition: var(--transition-normal);
}

.nav-work-item:hover {
    transform: translateY(-4px);
}

.nav-work-item.prev-work {
    text-align: left;
}

.nav-work-item.next-work {
    text-align: right;
}

.nav-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: #888888;
}

.nav-work-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    transition: var(--transition-normal);
}

.nav-work-item:hover .nav-work-title {
    color: var(--color-accent);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 滚动渐显动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 点击波纹效果 */
.ripple {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(0, 102, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 按压效果 */
.press-effect {
    transition: transform 0.1s ease;
}

.press-effect:active {
    transform: scale(0.98);
}

/* ========================================
   响应式适配
   ======================================== */
@media (max-width: 1024px) {
    .works-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-wrapper {
        aspect-ratio: 16/9;
    }
    
    .video-overlay {
        padding: var(--space-lg);
    }
    
    .video-title {
        font-size: 1.25rem;
    }
    
    .about-container {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .about-left {
        position: relative;
        top: 0;
    }

    .photo-slider {
        aspect-ratio: 16/9;
    }
    
    .about-stats {
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 4rem;
        --space-2xl: 5rem;
    }

    .personal-projects-grid {
        flex-direction: column;
        align-items: center;
    }

    .personal-projects-grid .work-card {
        flex: 0 1 100%;
        max-width: 100%;
    }

    .video-wrapper {
        aspect-ratio: 16/9;
    }

    .video-overlay {
        padding: var(--space-md);
    }

    .video-title {
        font-size: 1.125rem;
    }

    .video-description {
        font-size: 0.875rem;
    }

    .work-video-intro {
        text-align: center;
        color: var(--color-gray);
        font-size: 0.9rem;
        line-height: 1.6;
        margin-top: var(--space-md);
        max-width: 800px;
        margin-left: auto;
        margin-right: auto;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-md);
        border-bottom: 1px solid var(--color-lighter-gray);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .works-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .personal-projects-grid {
        flex-direction: column;
        align-items: center;
    }

    .personal-projects-grid .work-card {
        flex: 0 1 100%;
        max-width: 100%;
    }
    
    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }
    
    .about-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .detail-gallery {
        grid-template-columns: 1fr;
    }
    
    .detail-meta {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-works {
        flex-direction: column;
        gap: var(--space-md);
    }

    .nav-work-item.prev-work,
    .nav-work-item.next-work {
        text-align: center;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--space-sm);
    }
    
    .hero {
        padding: calc(70px + var(--space-lg)) var(--space-sm) var(--space-lg);
    }
    
    .works-section,
    .about-section,
    .footer {
        padding-left: var(--space-sm);
        padding-right: var(--space-sm);
    }
    
    .work-info {
        padding: var(--space-sm);
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ========================================
   打印样式
   ======================================== */
@media print {
    .navbar,
    .hero-scroll,
    .work-overlay,
    .footer-links {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 1rem;
    }
    
    .work-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* 视频播放按钮样式 */
.video-play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: rgba(255, 174, 0, 0.9);
    border-radius: 50%;
    display: none;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-normal);
    box-shadow: 0 4px 20px rgba(255, 174, 0, 0.4);
}

.video-play-button:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background-color: rgba(255, 174, 0, 1);
    box-shadow: 0 6px 30px rgba(255, 174, 0, 0.6);
}

.play-icon {
    font-size: 28px;
    color: #000000;
    margin-left: 4px;
    font-weight: bold;
}

/* 图片模态框样式 */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.modal-image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #ffffff;
    cursor: pointer;
    z-index: 10001;
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 50px;
    color: #ffffff;
    cursor: pointer;
    padding: 20px;
    user-select: none;
}

.modal-nav.prev-nav {
    left: 20px;
}

.modal-nav.next-nav {
    right: 20px;
}

.modal-nav:hover {
    color: #ffae00;
}