/* Tailwind CSS CDN */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* 自定义颜色变量 */
:root {
    --primary-dark: #0D5C3D;
    --primary: #1A8C5E;
    --primary-light: #2ECC71;
    --bg-white: #FFFFFF;
    --bg-gray: #F5F7FA;
    --text-dark: #1A1A1A;
    --text-gray: #4A4A4A;
    --text-light: #666666;
    --accent-gold: #D4AF37;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* Hero 首屏 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0D5C3D 0%, #1A8C5E 50%, #2ECC71 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(46, 204, 113, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 2rem;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    color: white;
    letter-spacing: -2px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    animation: titleFadeIn 1s ease-out;
}

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

.title-sub {
    display: block;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.5rem;
    animation: titleFadeIn 1s ease-out 0.2s both;
}

.hero-tagline {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 4px;
    margin-bottom: 3rem;
    animation: titleFadeIn 1s ease-out 0.4s both;
}

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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: transparent;
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: white;
    color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

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

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid rgba(255, 255, 255, 0.7);
    border-bottom: 2px solid rgba(255, 255, 255, 0.7);
    transform: rotate(45deg);
    margin: 0.5rem auto 0;
}

/* 通用区块样式 */
.section {
    padding: 6rem 2rem;
}

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

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

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
}

/* 行业洞察 */
.insight {
    background: var(--bg-gray);
}

.insight-phases {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.phase-card {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

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

.phase-card.active {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
}

.phase-card.active .phase-number {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.phase-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: var(--bg-gray);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.phase-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.phase-card p {
    font-size: 0.95rem;
    opacity: 0.8;
}

.pain-title {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.pain-card {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.pain-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.pain-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.pain-card h4 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.pain-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.7;
}

/* 核心定位 */
.positioning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.position-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
}

.position-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.position-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.position-card h3 {
    font-size: 1.3rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.position-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 核心优势 */
.advantages {
    background: linear-gradient(180deg, var(--bg-gray) 0%, white 100%);
}

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

.advantage-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.advantage-source {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--bg-gray);
}

.advantage-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 服务主线 */
.services {
    background: white;
}

.services-main {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.service-line {
    background: var(--bg-gray);
    border-radius: 24px;
    overflow: hidden;
}

.service-line-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.line-number {
    font-size: 3rem;
    font-weight: 700;
    opacity: 0.3;
}

.service-line-header h3 {
    font-size: 1.5rem;
    flex: 1;
}

.line-desc {
    width: 100%;
    font-size: 0.95rem;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.service-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.service-item {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    transition: var(--transition);
}

.service-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.service-item h4 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.service-item p {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* 绿效专项 */
.green-effect {
    background: linear-gradient(180deg, white 0%, var(--bg-gray) 100%);
}

.green-effect-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.green-effect-badge {
    display: inline-block;
    background: var(--accent-gold);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.green-effect-intro h3 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.green-effect-intro p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.green-effect-process {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.process-arrow {
    font-size: 2rem;
    color: var(--primary);
    padding-top: 4rem;
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.process-step h4 {
    font-size: 1.3rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.process-step > p {
    font-size: 0.95rem;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.step-features {
    list-style: none;
}

.step-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-gray);
    font-size: 0.9rem;
}

.step-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* REAL绿效营 */
.camp {
    background: var(--bg-gray);
}

.camp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.camp-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.camp-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.camp-card h4 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.camp-card p {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* 权威背书 */
.authority {
    background: white;
}

.authority-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.authority-card {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 2.5rem;
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.authority-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.authority-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.authority-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.authority-card p {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.9;
}

/* 生态赋能 */
.ecology {
    background: linear-gradient(180deg, var(--bg-gray) 0%, white 100%);
}

.ecology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.ecology-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.ecology-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-dark), var(--primary-light));
}

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

.ecology-num {
    font-size: 3rem;
    font-weight: 700;
    color: var(--bg-gray);
    position: absolute;
    top: 1rem;
    right: 1.5rem;
}

.ecology-card h4 {
    font-size: 1.2rem;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.ecology-card p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.7;
}

/* 合作品牌 */
.brands {
    background: var(--primary-dark);
    color: white;
}

.brands .section-header .section-tag {
    background: rgba(255, 255, 255, 0.2);
}

.brands .section-title {
    color: white;
}

.brands .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.brands-showcase {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.brand-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.brand-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.partners-note {
    text-align: center;
}

.partners-note p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.partners-note .believe {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-light);
}

/* 底部联系 */
.contact {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #0a3d2a 100%);
    color: white;
    padding-bottom: 0;
}

.contact-content {
    text-align: center;
    padding: 3rem 0;
}

.contact-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.contact-sub {
    font-size: 1.2rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

.contact-cta .btn {
    background: white;
    color: var(--primary-dark);
}

.contact-cta .btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: white;
}

.footer {
    background: rgba(0, 0, 0, 0.2);
    padding: 2rem;
    margin-top: 3rem;
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 1rem;
}

.footer-copy {
    font-size: 0.85rem;
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        box-shadow: var(--shadow-md);
    }
    
    .insight-phases {
        flex-direction: column;
        align-items: center;
    }
    
    .process-arrow {
        display: none;
    }
    
    .green-effect-process {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 1.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .service-line-header {
        flex-direction: column;
        text-align: center;
    }
    
    .authority-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: 2.5rem;
    }
    
    .title-sub {
        font-size: 1.2rem;
    }
    
    .phase-card,
    .position-card,
    .advantage-card {
        min-width: 100%;
    }
}

/* 滚动动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* 合作案例 - 全宽大图沉浸式轮播 */
.cases {
    background: var(--primary-dark);
    padding: 5rem 0;
    overflow: hidden;
}

.cases .container {
    max-width: 100%;
    padding: 0;
}

.cases .section-header {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 2rem;
}

.cases .section-tag {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.cases .section-title {
    color: #ffffff;
}

.cases .section-subtitle {
    color: rgba(255, 255, 255, 0.6);
}

/* 轮播容器 */
.cases-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
}

/* 轮播轨道 */
.cases-track {
    display: flex;
    gap: 2rem;
    transition: transform 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    will-change: transform;
}

/* 单张卡片 - 一屏两张大图 */
.case-card {
    flex: 0 0 calc(50% - 1rem);
    position: relative;
    height: 60vh;
    min-height: 380px;
    max-height: 600px;
    overflow: hidden;
    cursor: pointer;
    border-radius: 16px;
}

/* 图片容器 */
.case-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.04);
}

/* 底部渐变遮罩 + 标题 */
.case-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4rem 8% 3rem;
    background: linear-gradient(to top, rgba(0,0,0,0.80) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
}

.case-info h4 {
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    color: #ffffff;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

.case-info .case-tag {
    display: inline-block;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 0.3rem 0.9rem;
    border-radius: 20px;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
}

/* 轮播指示器（小圆点） */
.cases-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 2rem;
    padding: 0 2rem;
}

.cases-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    padding: 0;
}

.cases-dot.active {
    background: var(--primary-light);
    width: 28px;
    border-radius: 4px;
}

/* 左右箭头按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-50%) scale(1.08);
}

.carousel-prev {
    left: 3%;
}

.carousel-next {
    right: 3%;
}

@media (max-width: 768px) {
    .case-card {
        flex: 0 0 calc(100% - 2rem);
        height: 55vw;
        min-height: 260px;
        max-height: 400px;
    }

    .case-info {
        padding: 3rem 6% 2rem;
    }

    .carousel-btn {
        width: 44px;
        height: 44px;
    }

    .carousel-prev {
        left: 1.5%;
    }

    .carousel-next {
        right: 1.5%;
    }
}

/* 联系我们弹窗 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    max-width: 480px;
    width: 90%;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-gray);
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-gray);
    color: var(--text-dark);
}

.modal-title {
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    text-align: center;
}

.office-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.office-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem;
    background: var(--bg-gray);
    border-radius: 12px;
    text-decoration: none;
    transition: var(--transition);
}

.office-item:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateX(5px);
}

.office-item:hover .office-icon,
.office-item:hover .office-info h4,
.office-item:hover .office-info p,
.office-item:hover .office-arrow {
    color: white;
    border-color: rgba(255,255,255,0.3);
}

.office-icon {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
    border: 2px solid var(--primary);
}

.office-info {
    flex: 1;
}

.office-info h4 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 0.3rem;
    transition: var(--transition);
}

.office-info p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.5;
    transition: var(--transition);
}

.office-arrow {
    color: var(--primary);
    transition: var(--transition);
}

.modal-email {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--bg-gray);
    color: var(--text-gray);
    font-size: 0.95rem;
}

.email-text {
    color: var(--primary-dark);
    font-weight: 500;
}