/* ===================================
   CSS 变量系统
   =================================== */
:root {
    /* 颜色 */
    --color-primary: #111111;
    --color-secondary: #333333;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-background: #ffffff;
    --color-background-alt: #f8f8f8;
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;

    /* 字体 */
    --font-primary: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-english: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* 字号 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);

    /* 容器 */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ===================================
   基础重置
   =================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-primary);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ===================================
   工具类
   =================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-subtitle {
    display: block;
    font-family: var(--font-english);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header .section-description {
    margin: 0 auto;
}

/* ===================================
   按钮
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: var(--text-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-background);
}

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

.btn-secondary:hover {
    border-color: var(--color-primary);
}

.btn-block {
    width: 100%;
}

/* ===================================
   导航栏
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-family: var(--font-english);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

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

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-close,
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
}

/* ===================================
   Hero 区域
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    background-color: var(--color-background);
}

.hero-content {
    max-width: 800px;
}

.hero-subtitle {
    display: inline-block;
    font-family: var(--font-english);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: var(--text-xl);
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.hero-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.keyword {
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
    color: var(--color-text-light);
    background-color: var(--color-background-alt);
    border-radius: var(--radius-sm);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* ===================================
   关于我
   =================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-description {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.skills-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.skill-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-background);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.skill-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.skill-item i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.skill-item span {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
}

/* ===================================
   作品集
   =================================== */
.work {
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.works-container {
    margin: 0 calc(-1 * var(--container-padding));
    padding: 0 var(--container-padding);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.works-container::-webkit-scrollbar {
    display: none;
}

.works-track {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
}

.work-card {
    flex: 0 0 350px;
    scroll-snap-align: start;
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

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

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

.work-card:hover .work-image img {
    transform: scale(1.05);
}

.work-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.7);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.work-view {
    padding: 0.75rem 1.5rem;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-background);
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
}

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

.work-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.work-category {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.work-year {
    font-family: var(--font-english);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
}

/* ===================================
   服务
   =================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-lg);
    align-items: stretch;
}

.service-card {
    padding: var(--spacing-xl);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 0;
    overflow: hidden;
}

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

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-background-alt);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.service-icon i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.service-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    line-height: 1.7;
    flex: 1;
}

/* ===================================
   为什么选择我
   =================================== */
.why-me {
    padding: var(--spacing-3xl) 0;
}

.why-me-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.why-me-card {
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.why-me-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.why-me-number {
    font-family: var(--font-english);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-border);
    margin-bottom: var(--spacing-md);
    line-height: 1;
}

.why-me-card:hover .why-me-number {
    color: var(--color-primary);
}

.why-me-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.why-me-description {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===================================
   客户评价
   =================================== */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-alt);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.testimonial-card {
    padding: var(--spacing-xl);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.testimonial-content {
    margin-bottom: var(--spacing-lg);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--color-text);
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-background-alt);
    border-radius: 50%;
}

.testimonial-avatar i {
    width: 24px;
    height: 24px;
    color: var(--color-text-muted);
}

.testimonial-name {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-primary);
}

.testimonial-company {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ===================================
   合作伙伴
   =================================== */
.partners {
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.partners-scroll {
    margin: 0 calc(-1 * var(--container-padding));
    padding: 0 var(--container-padding);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.partners-scroll::-webkit-scrollbar {
    display: none;
}

.partners-track {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-md) 0;
    animation: scroll 30s linear infinite;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.partner-logo {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-background-alt);
    border-radius: var(--radius-md);
    min-width: 150px;
    transition: all var(--transition-base);
}

.partner-logo:hover {
    background-color: var(--color-background);
    box-shadow: var(--shadow-md);
}

.partner-logo span {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.partner-logo:hover span {
    color: var(--color-primary);
}

/* ===================================
   联系
   =================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-alt);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-description {
    font-size: var(--text-lg);
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-method i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    margin-top: 2px;
}

.method-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-method a,
.contact-method span {
    font-size: var(--text-base);
    color: var(--color-text);
}

.contact-method a:hover {
    color: var(--color-primary);
}

.contact-form {
    background-color: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: var(--text-base);
    color: var(--color-text);
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-background);
}

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

/* ===================================
   页脚
   =================================== */
.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-background);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-logo {
    font-family: var(--font-english);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-background);
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-links h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-background);
}

.footer-social h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-background);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.social-links i {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
}

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

/* ===================================
   响应式设计
   =================================== */

/* 平板端 */
@media (max-width: 1024px) {
    .services-grid,
    .why-me-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动端 */
@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-background);
        flex-direction: column;
        padding: var(--spacing-3xl) var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
        z-index: 1000;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: var(--text-lg);
    }

    .nav-close {
        display: flex;
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .services-grid,
    .why-me-grid {
        grid-template-columns: 1fr;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .work-card {
        flex: 0 0 300px;
    }
}

/* 移动端遮罩层 */
@media (max-width: 768px) {
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 999;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

/* ===================================
   FAQ 区域
   =================================== */
.faq {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-alt);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-primary);
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-secondary);
}

.faq-question i {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    font-size: var(--text-base);
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===================================
   滚动动画
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* ===================================
   自定义滚动条（桌面端）
   =================================== */
@media (min-width: 769px) {
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }

    ::-webkit-scrollbar-track {
        background: var(--color-background-alt);
    }

    ::-webkit-scrollbar-thumb {
        background: var(--color-border);
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: var(--color-text-muted);
    }
}

/* ===================================
   作品详情弹窗
   =================================== */
.work-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.modal-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0);
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.work-modal.active .modal-overlay {
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transform: scale(0.8) translateY(20px);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.work-modal.active .modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    z-index: 10;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.modal-close:hover {
    background-color: var(--color-background);
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.modal-close i {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.modal-carousel {
    position: relative;
    display: flex;
    align-items: center;
}

.modal-image {
    max-width: 80vw;
    max-height: 70vh;
    overflow: hidden;
    position: relative;
    background-color: var(--color-background-alt);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    z-index: 10;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.carousel-btn:hover {
    background-color: var(--color-background);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

.carousel-btn:disabled:hover {
    transform: translateY(-50%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.carousel-btn i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.carousel-prev {
    left: var(--spacing-md);
}

.carousel-next {
    right: var(--spacing-md);
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.modal-image img.loaded {
    opacity: 1;
}

/* 加载状态 */
.modal-image .loading-spinner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.modal-info {
    padding: var(--spacing-lg);
    text-align: center;
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.modal-category {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.modal-year {
    font-family: var(--font-english);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
}

.modal-counter {
    font-family: var(--font-english);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

/* 移动端弹窗适配 */
@media (max-width: 768px) {
    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
    }

    .modal-image {
        max-width: 95vw;
        max-height: 60vh;
    }
}

/* 字符计数器 */
.char-count {
    display: block;
    text-align: right;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}