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

/* 根变量 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #e67e22;
    --accent-color: #f39c12;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --text-white: #ffffff;
    --bg-light: #ecf0f1;
    --bg-dark: #34495e;
    --concrete-gray: #95a5a6;
    --steel-blue: #34495e;
    --construction-orange: #e67e22;
    --safety-yellow: #f1c40f;
    --gradient-primary: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --gradient-secondary: linear-gradient(135deg, #e67e22 0%, #f39c12 100%);
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 5px 20px rgba(0,0,0,0.15);
    --shadow-heavy: 0 10px 30px rgba(0,0,0,0.25);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* 基础样式 */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

.card-link {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.card-link:focus-visible {
    outline: 3px solid var(--construction-orange);
    outline-offset: 4px;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(44, 62, 80, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-fast);
    border-bottom: 2px solid var(--construction-orange);
}

.navbar.scrolled {
    background: rgba(44, 62, 80, 0.98);
    box-shadow: var(--shadow-medium);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    text-decoration: none;
}

.nav-logo i {
    margin-right: 0.5rem;
    color: var(--construction-orange);
    font-size: 1.8rem;
}

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

.nav-link {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition-fast);
    padding: 0.5rem 0;
}

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

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

.nav-contact {
    display: flex;
    align-items: center;
    color: var(--text-white);
    font-weight: 500;
}

.nav-contact i {
    margin-right: 0.5rem;
    color: var(--construction-orange);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* 英雄区 */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

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

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(44, 62, 80, 0.8) 0%, rgba(52, 73, 94, 0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    padding: 0 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    animation: slideInUp 1s ease-out;
}

.title-line {
    display: block;
    position: relative;
}

.title-line:first-child {
    color: var(--construction-orange);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: slideInUp 1s ease-out 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: slideInUp 1s ease-out 0.6s both;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--text-white);
    border-color: var(--construction-orange);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

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

.hero-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    background: var(--construction-orange);
    transform: scale(1.2);
}

.scroll-indicator {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-arrow {
    color: var(--text-white);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

/* 关于我们 */
.about {
    padding: 6rem 0;
    background: var(--bg-light);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--bg-light));
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-secondary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.company-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--construction-orange);
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

.company-info {
    margin-top: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--text-white);
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-fast);
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-medium);
}

.info-item i {
    color: var(--construction-orange);
    font-size: 1.2rem;
    margin-right: 1rem;
    width: 20px;
}

.about-images {
    position: relative;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    height: 500px;
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-medium);
}

.img-1 {
    grid-row: 1 / 3;
}

.img-2 {
    grid-row: 1 / 2;
}

.img-3 {
    grid-row: 2 / 3;
}

.about-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-heavy);
}

/* 核心业务 */
.services {
    padding: 6rem 0;
    background: var(--text-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--text-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition-medium);
    position: relative;
    border: 1px solid #eee;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.service-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--text-white);
}

.service-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

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

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

.service-content {
    padding: 2rem;
}

.service-content h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.service-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-content ul {
    list-style: none;
}

.service-content li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.service-content li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--construction-orange);
    font-size: 0.8rem;
}

/* 项目案例 */
.projects {
    padding: 6rem 0;
    background: var(--bg-light);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    background: var(--text-white);
    border: 2px solid var(--concrete-gray);
    border-radius: 25px;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--construction-orange);
    color: var(--text-white);
    border-color: var(--construction-orange);
    transform: translateY(-2px);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: var(--transition-medium);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.project-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(44, 62, 80, 0.9) 0%, rgba(230, 126, 34, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-medium);
}

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

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

.project-info {
    text-align: center;
    color: var(--text-white);
    padding: 2rem;
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    margin-bottom: 1rem;
    opacity: 0.9;
}

.project-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: var(--text-white);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: var(--transition-fast);
}

.project-link:hover {
    background: var(--construction-orange);
    color: var(--text-white);
    transform: translateY(-2px);
}

/* 客户评价 */
.testimonials {
    padding: 6rem 0;
    background: var(--text-white);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 20px;
    position: relative;
    box-shadow: var(--shadow-light);
    transition: var(--transition-medium);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.quote-icon {
    position: absolute;
    top: -15px;
    left: 2rem;
    width: 40px;
    height: 40px;
    background: var(--construction-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quote-icon i {
    color: var(--text-white);
    font-size: 1.2rem;
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin: 1rem 0 2rem 0;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
}

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

.author-info h4 {
    color: var(--text-dark);
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.author-info span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 联系我们 */
.contact {
    padding: 6rem 0;
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--text-white);
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-fast);
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
}

.contact-icon i {
    color: var(--text-white);
    font-size: 1.5rem;
}

.contact-details h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: var(--text-light);
    line-height: 1.6;
}

.contact-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.contact-img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    transition: var(--transition-fast);
}

.contact-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-medium);
}

.contact-form {
    background: var(--text-white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.contact-form h3 {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition-fast);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--construction-orange);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.1);
}

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

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: var(--text-white);
    padding: 3rem 0 1rem 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 0.5rem;
    color: var(--construction-orange);
    font-size: 1.8rem;
}

.footer-section h4 {
    color: var(--construction-orange);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-white);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--construction-orange);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--construction-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--concrete-gray);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-light);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--construction-orange);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
    z-index: 1000;
}

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

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

/* 动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--text-dark);
        width: 100%;
        text-align: center;
        transition: var(--transition-fast);
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-contact {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .company-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .contact-images {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .nav-container {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .service-card,
    .project-card {
        margin: 0 1rem;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-medium);
}

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

/* 项目筛选动画 */
.project-card.hidden {
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition-fast);
}

.project-card.visible {
    opacity: 1;
    transform: scale(1);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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



/* 详情页样式增强 */
.page-hero,
.project-hero {
    position: relative;
    margin-top: 90px;
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    overflow: hidden;
}

.page-hero .hero-bg,
.project-hero .hero-bg {
    position: absolute;
    inset: 0;
}

.page-hero .hero-bg img,
.project-hero .hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.65);
    transform: scale(1.05);
}

.page-hero .hero-overlay,
.project-hero .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(44,62,80,0.85) 0%, rgba(44,62,80,0.65) 50%, rgba(230,126,34,0.35) 100%);
}

.page-hero .hero-content,
.project-hero .hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 960px;
    text-align: left;
}

.page-title,
.project-title {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

.page-subtitle,
.project-subtitle {
    font-size: 1.2rem;
    max-width: 640px;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
}

.breadcrumb {
    margin-top: 1.5rem;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(6px);
}

.breadcrumb a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--construction-orange);
}

.service-intro,
.service-scope,
.service-process,
.construction-process,
.construction-features,
.construction-highlights,
.construction-craft,
.construction-equipment,
.management-system,
.equipment-section,
.technical-advantages,
.team-advantages,
.safety-measures,
.quality-control,
.project-overview,
.design-features,
.design-concept,
.design-elements,
.design-philosophy,
.architectural-design,
.business-layout,
.facilities,
.functional-zones,
.supporting-facilities,
.space-layout,
.cultural-content,
.cultural-meaning,
.lighting-design,
.maintenance-guide,
.plant-selection,
.plant-configuration,
.landscape-elements,
.project-gallery,
.project-showcase,
.project-achievements,
.project-results,
.project-planning,
.project-content,
.related-projects,
.renovation-process,
.renovation-highlights,
.before-after,
.client-testimonial,
.contact-section,
.project-hero + .project-overview {
    padding: 5rem 0;
}

.service-intro,
.project-overview,
.architectural-design,
.design-concept,
.design-philosophy,
.business-layout,
.functional-zones,
.supporting-facilities,
.space-layout,
.cultural-content,
.cultural-meaning,
.lighting-design,
.maintenance-guide,
.project-content,
.project-planning,
.contact-section {
    background: var(--bg-light);
}

.service-scope,
.service-process,
.construction-process,
.project-gallery,
.project-showcase,
.project-achievements,
.project-results,
.related-projects,
.client-testimonial {
    background: var(--text-white);
}

.intro-content,
.overview-content,
.concept-content,
.equipment-content,
.system-content,
.quality-content,
.safety-content,
.craft-content,
.philosophy-content,
.management-system .system-content,
.project-overview .overview-content,
.project-content .content-grid,
.planning-content,
.maintenance-content,
.lighting-content,
.cultural-content .cultural-grid,
.cultural-meaning .meaning-content,
.space-layout .layout-content,
.functional-zones .zones-grid,
.supporting-facilities .facilities-grid,
.business-layout .layout-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.intro-content,
.overview-content,
.concept-content,
.system-content,
.quality-content,
.safety-content,
.craft-content,
.planning-content,
.maintenance-content,
.lighting-content,
.cultural-content .cultural-grid,
.cultural-meaning .meaning-content {
    background: var(--text-white);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: var(--shadow-medium);
}

.intro-text h2,
.overview-info h2,
.concept-content h2,
.system-content h2,
.quality-content h2,
.safety-content h2,
.craft-content h2,
.planning-content h2,
.maintenance-content h2,
.lighting-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.intro-text p,
.overview-info p,
.concept-content p,
.system-content p,
.quality-content p,
.safety-content p,
.craft-content p,
.planning-content p,
.maintenance-content p,
.lighting-content p,
.philosophy-text p,
.cultural-content p,
.cultural-meaning p,
.space-layout p {
    color: var(--text-light);
    margin-bottom: 1.2rem;
    line-height: 1.8;
}

.intro-image img,
.overview-image img,
.concept-image img,
.system-image img,
.quality-image img,
.safety-image img,
.craft-image img,
.philosophy-image img,
.cultural-content img,
.space-layout img,
.lighting-content img,
.maintenance-content img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    object-fit: cover;
}

.service-features,
.management-grid,
.advantages-grid,
.technical-features,
.technical-advantages .advantages-grid,
.team-advantages .advantages-grid,
.scope-grid,
.equipment-grid,
.facilities-grid,
.features-grid,
.highlights-grid,
.results-grid,
.achievements-grid,
.plant-grid,
.related-grid,
.showcase-grid,
.content-grid,
.layout-grid,
.elements-grid,
.zones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

.service-features .feature-item,
.scope-item,
.advantage-item,
.management-item,
.technical-advantages .advantage-item,
.team-advantages .advantage-item,
.equipment-item,
.facility-item,
.achievement-item,
.result-item,
.plant-item,
.related-item,
.zone-item,
.element-item,
.layout-content .floor-item,
.cultural-item,
.meaning-item,
.highlight-item,
.content-item,
.quality-item,
.safety-item,
.management-system .system-item,
.supporting-facilities .facility-item,
.functional-zones .zone-item,
.results-grid .result-item {
    background: var(--text-white);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    padding: 2rem;
    transition: var(--transition-fast);
    height: 100%;
}

.service-features .feature-item:hover,
.scope-item:hover,
.advantage-item:hover,
.management-item:hover,
.equipment-item:hover,
.facility-item:hover,
.achievement-item:hover,
.result-item:hover,
.plant-item:hover,
.related-item:hover,
.zone-item:hover,
.element-item:hover,
.highlight-item:hover,
.quality-item:hover,
.safety-item:hover,
.management-system .system-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.service-features .feature-item i,
.scope-icon,
.advantage-item i,
.management-item i,
.technical-advantages i,
.team-advantages i,
.equipment-info i,
.facility-icon,
.achievement-item i,
.result-item i,
.plant-item i,
.zone-item i,
.element-item i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: var(--gradient-secondary);
    color: var(--text-white);
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.scope-item h3,
.service-features h4,
.advantage-item h3,
.management-item h3,
.equipment-info h3,
.facility-item h3,
.achievement-item h3,
.result-item h3,
.plant-item h3,
.zone-item h3,
.element-item h3,
.quality-item h3,
.safety-item h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.scope-item ul,
.service-features ul,
.quality-item ul,
.safety-item ul,
.feature-text ul,
.management-item ul,
.technical-advantages ul,
.team-advantages ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.5rem;
}

.scope-item ul li::before,
.service-features ul li::before,
.feature-text ul li::before,
.quality-item ul li::before,
.safety-item ul li::before {
    content: '00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 0.5rem;
    color: var(--construction-orange);
}

.construction-process,
.service-process {
    background: linear-gradient(135deg, rgba(44,62,80,0.95), rgba(44,62,80,0.85));
    color: var(--text-white);
}

.construction-process .section-header p,
.service-process .section-header p {
    color: rgba(255,255,255,0.8);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.process-item {
    background: rgba(255,255,255,0.08);
    border-radius: 18px;
    padding: 2rem 1.5rem;
    backdrop-filter: blur(6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    transition: var(--transition-fast);
}

.process-item:hover {
    transform: translateY(-6px);
}

.process-number {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--construction-orange);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 1rem;
}

.process-content h3 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.equipment-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.equipment-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.2rem;
}

.equipment-image img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 16px;
}

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

.showcase-image {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
}

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

.showcase-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0) 20%, rgba(0,0,0,0.75) 100%);
    color: var(--text-white);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    transition: var(--transition-medium);
}

.showcase-image:hover img {
    transform: scale(1.07);
}

.showcase-image:hover .showcase-overlay {
    opacity: 1;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: 22px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0) 30%, rgba(0,0,0,0.75) 100%);
    color: var(--text-white);
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: var(--transition-fast);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.design-content,
.features-content,
.philosophy-content,
.highlights-grid,
.construction-features .features-content,
.renovation-highlights .highlights-grid,
.renovation-process .process-timeline,
.before-after .comparison-content {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.design-item,
.features-content .feature-item,
.philosophy-item,
.highlight-item,
.comparison-item {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    background: var(--text-white);
    border-radius: 24px;
    box-shadow: var(--shadow-light);
    padding: 2.5rem;
    align-items: center;
    transition: var(--transition-fast);
}

.design-item:hover,
.features-content .feature-item:hover,
.philosophy-item:hover,
.highlight-item:hover,
.comparison-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
}

.design-image img,
.feature-image img,
.philosophy-image img,
.highlight-item img,
.comparison-images img,
.before-image img,
.after-image img {
    width: 100%;
    border-radius: 18px;
    object-fit: cover;
}

.design-features,
.floor-features,
.feature-text ul,
.layout-content .floor-features,
.project-specs,
.project-results .results-grid,
.project-achievements .achievements-grid,
.project-planning .planning-content,
.project-results .results-grid {
    display: grid;
    gap: 0.75rem;
}

.design-features span,
.floor-features span,
.feature-text ul li,
.project-specs .spec-item span {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.85rem;
    background: rgba(230,126,34,0.12);
    color: var(--construction-orange);
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
}

.project-specs {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    margin-top: 2rem;
    gap: 1.5rem;
}

.spec-item {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.spec-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.3rem;
}

.spec-info span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.facilities-grid,
.management-grid,
.advantages-grid,
.results-grid,
.achievements-grid,
.plant-grid,
.related-grid,
.zones-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.facility-item,
.management-item,
.advantage-item,
.result-item,
.achievement-item,
.plant-item,
.related-item,
.zone-item {
    text-align: left;
}

.facility-icon {
    margin-bottom: 1rem;
}

.contact-section .contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    background: var(--text-white);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: var(--shadow-medium);
}

.contact-section .contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-light);
    border-radius: 14px;
    color: var(--text-dark);
}

.contact-section .contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-light);
}

.result-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--construction-orange);
    display: block;
    margin-bottom: 0.5rem;
}

.client-testimonial .testimonial-card,
.client-testimonial .testimonial-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}


.service-features .feature-item {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.scope-item ul li {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
}

.achievement-icon,
.advantage-icon,
.content-icon,
.cultural-icon,
.element-icon,
.facility-icon,
.feature-icon,
.highlight-icon,
.layout-icon,
.lighting-icon,
.maintenance-icon,
.management-icon,
.philosophy-icon,
.planning-icon,
.zone-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.layout-content .floor-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    align-items: center;
}

.floor-number {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow-light);
}

.floor-content h3 {
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.floor-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.comparison-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.before-image,
.after-image {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.before-image img,
.after-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-label {
    position: absolute;
    bottom: 12px;
    left: 12px;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    background: rgba(44,62,80,0.85);
    color: var(--text-white);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.highlights-grid .highlight-item,
.renovation-highlights .highlight-item {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.results-grid .result-item {
    text-align: center;
    padding: 2.25rem 1.5rem;
}

.project-achievements .achievement-item {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.project-achievements .achievement-item h3 {
    margin-bottom: 0.35rem;
}

.project-results .result-item p {
    color: var(--text-light);
}

.related-grid .related-item {
    overflow: hidden;
}

.related-grid .related-image {
    border-radius: 18px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.related-grid .related-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.related-item:hover .related-image img {
    transform: scale(1.05);
}

@media (max-width: 992px) {
    .page-hero,
    .project-hero {
        min-height: 360px;
        margin-top: 70px;
    }

    .page-title,
    .project-title {
        font-size: 2.4rem;
    }

    .intro-content,
    .overview-content,
    .concept-content,
    .system-content,
    .quality-content,
    .safety-content,
    .craft-content,
    .planning-content,
    .maintenance-content,
    .lighting-content,
    .philosophy-item,
    .design-item,
    .feature-item,
    .comparison-item {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

    .contact-section .contact-content {
        grid-template-columns: 1fr;
        padding: 2rem;
    }
}

@media (max-width: 640px) {
    .service-features,
    .scope-grid,
    .equipment-grid,
    .facilities-grid,
    .results-grid,
    .achievements-grid,
    .showcase-grid,
    .gallery-grid,
    .plant-grid,
    .related-grid,
    .zones-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

    .breadcrumb {
        border-radius: 16px;
        padding: 0.5rem 1rem;
    }
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--text-white);
    min-width: 220px;
    box-shadow: var(--shadow-medium);
    border-radius: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
    list-style: none;
    padding: 0.5rem 0;
    margin: 0;
    border: 1px solid rgba(0,0,0,0.1);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: 500;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.dropdown-menu a:hover {
    background: var(--construction-orange);
    color: var(--text-white);
    padding-left: 2rem;
}

.dropdown-menu li:last-child a {
    border-bottom: none;
}

.dropdown .nav-link i {
    margin-left: 0.5rem;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

/* 移动端下拉菜单样式 */
@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(52, 73, 94, 0.95);
        border-radius: 0;
        border: none;
        margin-top: 0.5rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-fast);
    }
    
    .dropdown:hover .dropdown-menu,
    .dropdown.active .dropdown-menu {
        max-height: 400px;
    }
    
    .dropdown-menu a {
        color: var(--text-white);
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding: 1rem 2rem;
    }
    
    .dropdown-menu a:hover {
        background: var(--construction-orange);
        padding-left: 2.5rem;
    }
}