/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:wght@300;400;600;700&family=Rajdhani:wght@300;400;500;600;700&display=swap');

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Exo 2', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #1d4ed8 100%);
    min-height: 100vh;
}

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

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(30, 58, 138, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(30, 58, 138, 0.1);
    transition: transform 0.3s ease;
}

.header.hidden {
    transform: translateY(-100%);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.2rem;
    font-family: 'Orbitron', monospace;
}

.logo .tagline {
    color: #7f8c8d;
    font-size: 0.9rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.1rem;
}

.nav-menu a:hover {
    color: #1d4ed8;
}

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

.hamburger span {
    width: 28px;
    height: 3px;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    margin: 4px 0;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(30, 58, 138, 0.2);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

/* Service Process Styles */
.service-process {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ecff 100%);
    position: relative;
    overflow: hidden;
}

.service-process::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(30, 58, 138, 0.05) 0%, transparent 70%);
    animation: float 10s ease-in-out infinite;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    position: relative;
    z-index: 2;
}

.process-step {
    background: white;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(30, 58, 138, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.process-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8), rgba(29, 78, 216, 0.6));
    z-index: 1;
    transition: all 0.3s ease;
}

.process-step:hover::before {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.9), rgba(29, 78, 216, 0.7));
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(30, 58, 138, 0.15);
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.9));
    color: #1e3a8a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 2;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.step-content {
    position: relative;
    z-index: 2;
}

.step-content h3 {
    font-size: 1.4rem;
    color: white;
    margin: 0;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem 1.5rem;
    border-radius: 10px;
    backdrop-filter: blur(5px);
}

.step-content p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

.section-cta {
    text-align: center;
    margin-top: 2rem;
}

.section-cta .btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
}

.section-cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(30, 58, 138, 0.4);
    color: white;
}
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(30, 58, 138, 0.4);
    color: white;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #1d4ed8 100%);
    color: white;
    padding: 150px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes slideInNav {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h2 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-showcase {
    position: relative;
    width: 100%;
    max-width: 500px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-showcase:hover {
    transform: scale(1.02);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
}

.video-showcase:hover .play-button {
    transform: translate(-50%, -50%) scale(1.1);
}

.placeholder-video {
    background: rgba(255,255,255,0.1);
    border: 2px dashed rgba(255,255,255,0.3);
    border-radius: 10px;
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    font-size: 1.2rem;
}

/* Featured Locations Section */
.featured-locations {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #ebf4ff 100%);
    position: relative;
    overflow: hidden;
}

.locations-slider {
    position: relative;
    min-height: 600px;
}

.location-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.location-slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    height: 100%;
}

.location-text {
    padding-left: 2rem;
}

.location-title {
    font-size: 4rem;
    font-weight: 900;
    color: #1a365d;
    margin-bottom: 2rem;
    font-family: 'Orbitron', monospace;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.location-description {
    font-size: 1.4rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 3rem;
    font-family: 'Exo 2', sans-serif;
}

.btn-location {
    display: inline-block;
    padding: 15px 35px;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
    border: none;
}

.btn-location:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(30, 58, 138, 0.4);
    color: white;
}

.location-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.location-image img {
    width: 100%;
    max-width: 500px;
    height: 400px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.location-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.location-emoji {
    font-size: 2rem;
    display: block;
    line-height: 1;
}

.slider-navigation {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
}

.nav-dot {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    border: 2px solid #1e3a8a;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot.active,
.nav-dot:hover {
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    transform: scale(1.2);
    box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
}

/* Video Category Section */
.video-category {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #ebf4ff 100%);
}

.video-category .section-header {
    text-align: left;
    margin-bottom: 3rem;
}

.video-category .section-header h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    color: #000;
}

.video-category .en-title {
    font-family: 'Orbitron', Arial, Helvetica, sans-serif;
    font-weight: bold;
    color: #000;
}

.video-category .cn-title {
    font-family: 'Source Han Sans', Geneva, sans-serif;
    color: #000;
}

.video-category .section-desc {
    font-size: 1.25rem;
    color: #999;
    line-height: 1.2;
    font-family: 'Source Han Sans';
    margin-top: 1rem;
    max-width: 800px;
}

/* 全新的视频网格设计 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.video-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
}

.video-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(30, 58, 138, 0.2);
    border-color: rgba(30, 58, 138, 0.3);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
    cursor: pointer;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
    border-radius: 0;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.3), rgba(30, 58, 138, 0.4));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.play-icon {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.play-icon:hover {
    transform: scale(1.1);
    background: white;
}

.play-icon svg {
    margin-left: 4px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.video-duration {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.video-info {
    padding: 1.8rem;
    background: white;
}

.video-info h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 0.5rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

.video-subtitle {
    font-size: 0.9rem;
    color: #1d4ed8;
    font-style: italic;
    margin-bottom: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.video-desc {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 1rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

.video-details-link {
    display: inline-block;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(30, 58, 138, 0.3);
}

.video-details-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    color: white;
    text-decoration: none;
}

/* Plyr视频模态框样式 */
.plyr-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease;
}

.plyr-modal-content {
    position: relative;
    background-color: #1f2937;
    margin: 5% auto;
    padding: 0;
    width: 90%;
    max-width: 1200px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.8);
}

.plyr-modal-header {
    background: linear-gradient(135deg, #374151, #4b5563);
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.plyr-modal-header h3 {
    color: white;
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

.plyr-modal-close {
    color: white;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    background: transparent;
    border: none;
}

.plyr-modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.plyr-video-container {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: 0 0 15px 15px;
    overflow: hidden;
}

#plyrVideo {
    width: 100%;
    height: auto;
    min-height: 400px;
    display: block;
}

/* 移动端视频网格响应式设计 */
@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 2rem;
    }

    .video-card {
        border-radius: 15px;
        margin-bottom: 1rem;
    }

    .video-thumbnail {
        height: 200px;
    }

    .video-info {
        padding: 1.5rem;
    }

    .video-info h3 {
        font-size: 1.2rem;
        margin-bottom: 0.4rem;
    }

    .video-subtitle {
        font-size: 0.8rem;
        margin-bottom: 0.8rem;
    }

    .video-desc {
        font-size: 0.9rem;
        margin-bottom: 0;
        line-height: 1.5;
    }

    .play-icon {
        width: 60px;
        height: 60px;
    }

    .video-duration {
        bottom: 10px;
        right: 10px;
        padding: 3px 10px;
        font-size: 0.8rem;
    }

    /* 移动端Plyr模态框优化 */
    .plyr-modal-content {
        width: 95%;
        margin: 8% auto;
        border-radius: 10px;
    }

    .plyr-modal-header {
        padding: 15px 20px;
    }

    .plyr-modal-header h3 {
        font-size: 1.1rem;
    }

    .plyr-modal-close {
        font-size: 28px;
        width: 36px;
        height: 36px;
    }

    #plyrVideo {
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    .video-grid {
        gap: 1rem;
        margin-top: 1.5rem;
    }

    .video-card {
        border-radius: 12px;
    }

    .video-thumbnail {
        height: 180px;
    }

    .video-info {
        padding: 1.2rem;
    }

    .video-info h3 {
        font-size: 1.1rem;
    }

    .video-desc {
        font-size: 0.85rem;
        line-height: 1.4;
        margin-bottom: 0;
    }

    .play-icon {
        width: 50px;
        height: 50px;
    }

    .play-icon svg {
        width: 35px;
        height: 35px;
    }

    .video-duration {
        bottom: 8px;
        right: 8px;
        padding: 2px 8px;
        font-size: 0.75rem;
    }

    /* 超小屏幕Plyr模态框 */
    .plyr-modal-content {
        width: 98%;
        margin: 5% auto;
        border-radius: 8px;
    }

    .plyr-modal-header {
        padding: 12px 15px;
    }

    .plyr-modal-header h3 {
        font-size: 1rem;
    }

    .plyr-modal-close {
        font-size: 24px;
        width: 32px;
        height: 32px;
    }

    #plyrVideo {
        min-height: 200px;
    }
}

.plyr-modal.closing {
    animation: fadeOut 0.3s ease;
}

.video-tabs {
    display: block;
    width: 100%;
}

.video-tabs-container {
    display: flex;
    gap: 3rem;
    align-items: stretch; /* 让两边高度一致 */
    min-height: 400px; /* 确保最小高度 */
}

.tab-images {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 100%;
    height: fit-content; /* 自适应高度 */
}

.tab-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: white;
    height: 160px;
    border: 3px solid transparent;
    display: flex;
    flex-direction: column;
    touch-action: manipulation;
}

.tab-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8), rgba(29, 78, 216, 0.8));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 2;
}

.tab-item:hover::before {
    opacity: 0.7;
}

.tab-item.active::before {
    opacity: 0.85;
}

.tab-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.tab-item:hover img {
    transform: scale(1.1);
}

.video-play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: all 0.3s ease;
    z-index: 3;
    cursor: pointer;
    text-decoration: none;
}

.video-play-overlay:hover {
    opacity: 0.8;
    text-decoration: none;
}

.play-button {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #333;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.play-button:hover {
    background: white;
    transform: scale(1.1);
}

/* Fancybox 自定义样式 */
.fancybox__backdrop {
    background: rgba(0, 0, 0, 0.9);
}

.fancybox__container {
    z-index: 9999;
}

.fancybox__content {
    background: #000;
    border-radius: 15px;
    overflow: hidden;
}

.fancybox__html5video {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    border-radius: 10px;
}

.fancybox__toolbar {
    background: rgba(0, 0, 0, 0.8);
    border-radius: 10px 10px 0 0;
}

.fancybox__button {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    margin: 0 2px;
    transition: all 0.3s ease;
}

.fancybox__button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* 移动端Fancybox优化 */
@media (max-width: 768px) {
    .fancybox__content {
        border-radius: 10px;
        margin: 20px;
    }

    .fancybox__html5video {
        border-radius: 5px;
    }

    .fancybox__toolbar {
        padding: 8px;
    }

    .fancybox__button {
        width: 44px;
        height: 44px;
        margin: 0 4px;
    }
}

@media (max-width: 480px) {
    .fancybox__content {
        margin: 10px;
        border-radius: 8px;
    }

    .fancybox__button {
        width: 40px;
        height: 40px;
    }
}

.tab-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 50px rgba(30, 58, 138, 0.25);
    border-color: rgba(30, 58, 138, 0.3);
}

.tab-item.active {
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 25px 60px rgba(30, 58, 138, 0.4);
    border-color: #1e3a8a;
}

.tab-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.tab-item:hover img {
    transform: scale(1.1);
}

.tab-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 2.5rem 2rem 2rem;
    transform: translateY(100%);
    transition: transform 0.4s ease;
    z-index: 4;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 120px;
}

.tab-item:hover .tab-overlay,
.tab-item.active .tab-overlay {
    transform: translateY(0);
}

.tab-overlay h4 {
    color: white;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.tab-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    margin: 0;
    font-style: italic;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.tab-content {
    flex: 0.8;
    position: sticky;
    top: 2rem;
    height: fit-content;
    min-height: 400px; /* 与左边保持一致的最小高度 */
}

.content-item {
    display: none;
    width: 100%;
    opacity: 0;
    transition: all 0.5s ease;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-item.active {
    display: block;
    opacity: 1;
    animation: fadeInUp 0.5s ease-out;
}

.content-card {
    background: linear-gradient(135deg, #4f93d6 0%, #3b73b9 50%, #2c5aa0 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: left;
    height: 100%; /* 占满父容器高度 */
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 15px 40px rgba(79, 147, 214, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.content-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%);
    pointer-events: none;
}

.icon-wrapper {
    text-align: center;
    margin-bottom: 2rem;
}

.icon-wrapper img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    padding: 15px;
}

.content-card h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    font-weight: bold;
}

.content-card .en-subtitle {
    font-size: 0.75rem;
    font-family: Arial, Helvetica, sans-serif;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.content-card .description {
    font-size: 0.9rem;
    line-height: 1.5;
    font-family: Arial, Helvetica, sans-serif;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.custom-btn {
    display: inline-block;
    padding: 12px 30px;
    background: rgba(255,255,255,0.2);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid rgba(255,255,255,0.3);
    align-self: flex-start;
}

.custom-btn:hover {
    background: rgba(255,255,255,0.3);
    border-color: rgba(255,255,255,0.8);
    transform: translateY(-2px);
    color: white;
}

/* Partners Section */
.partners {
    padding: 120px 0;
    background: linear-gradient(135deg, #f0f7ff 0%, #e1f0ff 100%);
    overflow: hidden;
    position: relative;
    width: 100%;
}

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

.partners .section-header {
    text-align: left;
    margin-bottom: 3rem;
}

.partners .section-header h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    color: #000;
}

.partners .section-desc {
    font-size: 1.1rem;
    color: #666;
    margin-top: 1rem;
    line-height: 1.6;
}

.partners .en-title {
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    color: #000;
}

.partners .cn-title {
    font-family: 'Source Han Sans', Geneva, sans-serif;
    color: #000;
}

/* 合作伙伴滑块样式 */
.partners-slider-wrapper {
    position: relative;
    overflow: hidden;
    width: 100%;
    margin-top: 2rem;
}

.slider-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    height: 120px;
    margin-bottom: 0px;
}

.slider-track {
    display: flex;
    width: calc(200px * 16);
    animation: slide 15s linear infinite;
    gap: 15px;
}

.partner-item {
    flex: 0 0 180px;
    height: 100px;
    background: white;
    border: 2px solid #f0f0f0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: relative;
}

.partner-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    border-color: #007bff;
}

.partner-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 10px;
}

.partner-item .placeholder {
    color: #666;
    font-weight: bold;
    font-size: 14px;
    text-align: center;
}

@keyframes slide {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-195px * 8));
    }
}

.slider-container:hover .slider-track {
    animation-play-state: paused;
}

/* 反向滑动 */
.slider-track.reverse {
    animation: slideReverse 15s linear infinite;
}

@keyframes slideReverse {
    0% {
        transform: translateX(calc(-195px * 8));
    }
    100% {
        transform: translateX(0);
    }
}

/* 第三行不同速度 */
.slider-track.slow {
    animation: slide 25s linear infinite;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-tabs-container {
        gap: 2rem;
    }

    .tab-images {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
        gap: 1rem;
    }

    .tab-item {
        height: 200px;
    }
}

@media (max-width: 1024px) {
    .video-tabs-container {
        flex-direction: column;
        gap: 2rem;
    }

    .tab-content {
        width: 100%;
        position: relative;
        top: 0;
    }

    .tab-images {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
        gap: 1rem;
    }

    .tab-item {
        height: 180px;
    }
}

@media (max-width: 768px) {
    .partners {
        padding: 60px 0;
    }

    .partners .section-header {
        text-align: center;
    }

    .partners .section-header h2 {
        font-size: 1.8rem;
    }

    .video-tabs-container {
        gap: 0; /* 移除间距 */
    }

    .tab-images {
        flex: 1;
        width: 100%; /* 占满全家 */
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, 1fr);
        gap: 1.2rem; /* 适当增加间距 */
        max-height: none; /* 移除高度限制 */
    }

    .tab-item {
        height: 160px; /* 适当增加高度 */
        touch-action: manipulation;
    }

    .tab-content {
        display: none; /* 平板端也隐藏右边内容 */
    }

    .play-button {
        width: 50px;
        height: 50px;
        font-size: 16px;
    }

    .partner-item {
        flex: 0 0 150px;
        height: 80px;
    }

    .partner-item img {
        width: 100%;
        height: 100%;
        padding: 8px;
    }

    .slider-track {
        width: calc(165px * 16);
    }

    @keyframes slide {
        0% { transform: translateX(0); }
        100% { transform: translateX(calc(-165px * 8)); }
    }

    @keyframes slideReverse {
        0% { transform: translateX(calc(-165px * 8)); }
        100% { transform: translateX(0); }
    }
}

@media (max-width: 480px) {
    .video-tabs-container {
        flex-direction: column;
        gap: 0; /* 移除间距，因为右边已隐藏 */
    }

    .tab-images {
        flex: 1;
        width: 100%; /* 占满全家 */
        grid-template-columns: 1fr;
        grid-template-rows: repeat(6, 1fr);
        gap: 1rem; /* 增加间距让布局更舟适 */
        max-height: none; /* 移除高度限制 */
    }

    .tab-item {
        height: 140px; /* 增加高度，因为现在有更多空间 */
        touch-action: manipulation;
    }

    .tab-content {
        display: none; /* 手机版隐藏右边内容 */
    }

    .play-button {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .tab-overlay h4 {
        font-size: 1rem;
    }

    .tab-overlay p {
        font-size: 0.8rem;
    }
}

/* Portfolio Section */
.portfolio {
    padding: 120px 0;
    background: linear-gradient(135deg, #f0f7ff 0%, #e1f0ff 100%);
}

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

.portfolio-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.portfolio-image {
    height: 250px;
    background: linear-gradient(45deg, #1e3a8a, #1d4ed8);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    overflow: hidden;
    position: relative;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.play-button {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1e3a8a;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.play-button:hover {
    transform: scale(1.1);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-info {
    padding: 2rem;
}

.portfolio-category {
    display: inline-block;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.portfolio-info h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    font-weight: 600;
    line-height: 1.3;
}

.portfolio-info p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.portfolio-tags .tag {
    background: #f8f9fa;
    color: #1d4ed8;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.portfolio-tags .tag:hover {
    background: #1d4ed8;
    color: white;
    transform: translateY(-2px);
}

/* Achievements Section */
.achievements {
    padding: 100px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);
    color: white;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.achievement-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.achievement-item:hover {
    transform: translateY(-10px);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.achievement-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    font-family: 'Orbitron', monospace;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.achievement-label {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Section CTA styles */
.section-desc {
    color: #7f8c8d;
    font-size: 1.1rem;
    line-height: 1.6;
    margin-top: 1rem;
}

.section-cta {
    margin-top: 2rem;
    text-align: center;
}

.section-cta .btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
}

/* About Section */
.about {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #ebf4ff 100%);
}

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

.about-text h2 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    color: #1a365d;
    font-weight: 700;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 2rem;
}

.stats {
    display: flex;
    gap: 2rem;
}

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

.stat-item h3 {
    font-size: 2.5rem;
    color: #1d4ed8;
    margin-bottom: 0.5rem;
    font-weight: 800;
}

.stat-item p {
    color: #7f8c8d;
    margin: 0;
}

.about-image {
    display: flex;
    justify-content: center;
}

.placeholder-image {
    background: linear-gradient(45deg, #1e3a8a, #1d4ed8);
    border-radius: 10px;
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
}

.contact h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: #1a365d;
    font-weight: 700;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

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

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.contact-item p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #1d4ed8;
}

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

/* Footer */
.footer {
    background: linear-gradient(135deg, #1a365d 0%, #0f172a 100%);
    color: white;
    padding: 60px 0 30px;
    position: relative;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: #ecf0f1;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
    color: #bdc3c7;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    color: #bdc3c7;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* 移动端导航优化：更紧凑的设计 */
    .header {
        padding: 0;
        background: rgba(255, 255, 255, 0.92);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .navbar {
        padding: 0.5rem 0;
    }

    .logo h1 {
        font-size: 1.4rem;
        margin-bottom: 0.1rem;
    }

    .logo .tagline {
        font-size: 0.75rem;
    }

    .hamburger {
        display: flex;
        z-index: 1002;
        padding: 0.5rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 55px;
        flex-direction: column;
        background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.95) 100%);
        backdrop-filter: blur(15px);
        width: 100%;
        height: calc(100vh - 55px);
        text-align: center;
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        box-shadow: 0 10px 40px rgba(30, 58, 138, 0.15);
        padding: 2rem 0;
        overflow-y: auto;
        z-index: 1001;
    }

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

    .nav-menu li {
        margin: 0.8rem 0;
        opacity: 0;
        transform: translateX(-30px);
        animation: slideInNav 0.3s ease forwards;
    }

    .nav-menu.active li:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { animation-delay: 0.2s; }
    .nav-menu.active li:nth-child(3) { animation-delay: 0.3s; }
    .nav-menu.active li:nth-child(4) { animation-delay: 0.4s; }
    .nav-menu.active li:nth-child(5) { animation-delay: 0.5s; }
    .nav-menu.active li:nth-child(6) { animation-delay: 0.6s; }
    .nav-menu.active li:nth-child(7) { animation-delay: 0.7s; }

    .nav-menu a {
        display: block;
        padding: 1rem 2rem;
        font-size: 1.3rem;
        font-weight: 600;
        color: #333;
        border-radius: 8px;
        margin: 0.5rem 1rem;
        transition: all 0.3s ease;
        background: rgba(255,255,255,0.7);
        border: 1px solid rgba(30, 58, 138, 0.1);
    }

    .nav-menu a:hover {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        color: white;
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
        padding: 0 20px;
        max-width: 100%;
    }

    .hero {
        padding: 140px 0 100px;
        min-height: 70vh;
        background-attachment: scroll !important;
        display: flex;
        align-items: center;
        position: relative;
    }

    /* 在移动端隐藏视频区域 */
    .hero-image {
        display: none;
    }

    /* 在移动端隐藏Hero内容框的装饰效果 */
    .hero-content {
        position: relative;
        z-index: 2;
        background: none;
        backdrop-filter: none;
        border-radius: 0;
        padding: 2rem 1rem;
        border: none;
        text-align: center;
    }

    .hero-content h2 {
        font-size: 2.8rem;
        line-height: 1.2;
        margin-bottom: 1.5rem;
        font-weight: 700;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        color: white;
    }

    .hero-content p {
        font-size: 1.3rem;
        margin-bottom: 2.5rem;
        padding: 0 0.5rem;
        line-height: 1.6;
        font-weight: 400;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
        color: white;
    }

    /* 在移动端隐藏按钮组 */
    .hero-buttons {
        display: none;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats {
        justify-content: space-around;
    }
    
    .video-category,
    .partners,
    .portfolio,
    .about,
    .contact,
    .featured-locations,
    .service-process,
    .achievements {
        padding: 60px 0;
        margin-bottom: 2rem;
        position: relative;
        z-index: 1;
        background: white;
        border-radius: 0;
    }

    .location-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
        padding: 2rem 1rem;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .location-text {
        padding-left: 0;
        order: 2;
        position: relative;
        z-index: 2;
    }

    .location-image {
        order: 1;
        position: relative;
        overflow: hidden;
        border-radius: 15px;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    }

    .location-title {
        font-size: 2.8rem;
        margin-bottom: 1.5rem;
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        font-weight: 700;
        text-shadow: none;
    }

    .location-description {
        font-size: 1.3rem;
        margin-bottom: 2.5rem;
        line-height: 1.7;
        color: #555;
        font-weight: 400;
    }

    .locations-slider {
        min-height: 600px;
        margin-bottom: 2rem;
        position: relative;
        border-radius: 25px;
        overflow: hidden;
    }

    .slider-navigation {
        margin-top: 3rem;
        gap: 1rem;
        position: static;
        z-index: 10;
        padding-bottom: 1.5rem;
        clear: both;
        display: flex;
        justify-content: center;
        background: rgba(255, 255, 255, 0.9);
        backdrop-filter: blur(10px);
        border-radius: 25px;
        padding: 1.5rem;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }

    .nav-dot {
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background: rgba(30, 58, 138, 0.3);
        border: 2px solid rgba(30, 58, 138, 0.5);
        cursor: pointer;
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        position: relative;
        overflow: hidden;
    }

    .nav-dot.active {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        border-color: #1e3a8a;
        transform: scale(1.3);
        box-shadow: 0 8px 20px rgba(30, 58, 138, 0.4);
    }

    .nav-dot:hover {
        transform: scale(1.1);
        background: rgba(30, 58, 138, 0.6);
    }

    .location-image img {
        max-width: 100%;
        height: 320px;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

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

    .location-icon {
        width: 60px;
        height: 60px;
        top: 20px;
        right: 20px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border: 2px solid rgba(30, 58, 138, 0.2);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .location-emoji {
        font-size: 2rem;
    }

    .btn-location {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        color: white;
        padding: 12px 30px;
        border-radius: 25px;
        font-weight: 600;
        font-size: 1.1rem;
        text-decoration: none;
        display: inline-block;
        transition: all 0.3s ease;
        box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
        border: none;
    }

    .btn-location:hover {
        transform: translateY(-3px);
        box-shadow: 0 12px 30px rgba(30, 58, 138, 0.4);
        background: linear-gradient(135deg, #1e40af, #3b82f6);
        color: white;
    }
    
    .video-tabs {
        flex-direction: column;
        gap: 2rem;
        position: relative;
        z-index: 1;
    }

    .tab-images {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-bottom: 2rem;
        padding: 0 1rem;
    }

    .tab-item {
        width: 100%;
        border-radius: 15px;
        overflow: hidden;
        position: relative;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
        border: 2px solid transparent;
        height: 180px;
        display: flex;
        flex-direction: column;
    }

    .tab-item.active {
        border-color: #1d4ed8;
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(30, 58, 138, 0.3);
    }

    .tab-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }

    .tab-item:hover img {
        transform: scale(1.1);
    }

    .tab-item::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, rgba(30, 58, 138, 0.7), rgba(29, 78, 216, 0.7));
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .tab-item.active::after {
        opacity: 0.8;
    }

    .tab-item::before {
        content: '✓';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        color: white;
        font-size: 1.5rem;
        font-weight: bold;
        opacity: 0;
        transition: opacity 0.3s ease;
        z-index: 2;
    }

    .tab-item.active::before {
        opacity: 1;
    }

    .tab-content {
        width: 100%;
        position: relative;
        background: white;
        border-radius: 20px;
        padding: 2rem 1rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(30, 58, 138, 0.1);
        margin: 0 1rem;
    }

    .video-category {
        padding: 80px 0;
        margin-bottom: 3rem;
        position: relative;
        z-index: 1;
        background: linear-gradient(135deg, #f8f9ff 0%, #e8ecff 100%);
        overflow: hidden;
    }

    .video-category::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(ellipse at center, rgba(30, 58, 138, 0.05) 0%, transparent 70%);
        animation: float 8s ease-in-out infinite;
        z-index: 0;
    }

    .video-category .container {
        position: relative;
        z-index: 2;
    }

    .video-category .tab-content {
        position: relative;
        z-index: 2;
        margin-bottom: 1rem;
    }

    .content-item {
        position: relative;
        z-index: 3;
        display: none;
    }

    .content-item.active {
        display: block;
        animation: fadeInUp 0.5s ease forwards;
    }

    .content-card {
        height: auto;
        min-height: 380px;
        max-height: none;
        position: relative;
        z-index: 5;
        margin-bottom: 2rem;
        transform: none !important;
        text-align: center;
        padding: 2.5rem 2rem;
        background: white;
        color: #333;
        border-radius: 20px;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
        border: 1px solid rgba(30, 58, 138, 0.1);
        overflow-y: auto;
    }

    .content-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        border-radius: 15px 15px 0 0;
    }

    .content-card .icon-wrapper {
        margin-bottom: 1rem;
        padding: 0.8rem;
        background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(29, 78, 216, 0.1));
        border-radius: 12px;
        display: inline-block;
        width: 60px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .content-card .icon-wrapper img {
        width: 30px;
        height: 30px;
        object-fit: contain;
    }

    .content-card h3 {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
        color: #333;
        font-weight: 600;
    }

    .content-card .en-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1rem;
        color: #1e3a8a;
        font-style: italic;
        font-weight: 400;
    }

    .content-card .description {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 1.5rem;
        color: #666;
    }

    .custom-btn {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        color: white;
        padding: 10px 25px;
        border-radius: 20px;
        font-weight: 600;
        font-size: 0.95rem;
        text-decoration: none;
        display: inline-block;
        transition: all 0.3s ease;
        box-shadow: 0 6px 20px rgba(30, 58, 138, 0.3);
        border: none;
    }

    .custom-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(30, 58, 138, 0.4);
        background: linear-gradient(135deg, #1e40af, #3b82f6);
        color: white;
    }
    
    .video-category .section-header h2,
    .partners .section-header h2 {
        font-size: 2rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .portfolio-item {
        margin-bottom: 1.5rem;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    }

    .portfolio-image img {
        height: 220px !important;
        object-fit: cover;
    }

    .portfolio-info {
        padding: 1.5rem;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
    }

    .portfolio-info h3 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
        color: #333;
        font-weight: 600;
    }

    .portfolio-info p {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 1rem;
        color: #666;
    }

    .portfolio-tags {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .portfolio-tags .tag {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
        background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(29, 78, 216, 0.1));
        color: #1e3a8a;
        border-radius: 15px;
        border: 1px solid rgba(30, 58, 138, 0.2);
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        margin-top: 2rem;
    }

    .achievement-item {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 2rem 1rem;
        text-align: center;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(30, 58, 138, 0.1);
        transition: transform 0.3s ease;
    }

    .achievement-item:hover {
        transform: translateY(-5px);
    }

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

    .achievement-number {
        font-size: 2.5rem;
        font-weight: 700;
        color: #1d4ed8;
        margin-bottom: 0.5rem;
    }

    .achievement-label {
        font-size: 1rem;
        color: #666;
        font-weight: 500;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 0 1rem;
    }

    .about-image img {
        height: 250px !important;
        border-radius: 15px !important;
    }

    .stats {
        justify-content: space-around;
        flex-wrap: wrap;
        gap: 1.5rem;
        margin-top: 2rem;
    }

    .stat-item {
        flex: 1;
        min-width: 100px;
        text-align: center;
        padding: 1rem;
        background: rgba(30, 58, 138, 0.05);
        border-radius: 15px;
        border: 1px solid rgba(30, 58, 138, 0.1);
    }

    .stat-item h3 {
        font-size: 1.8rem;
        color: #1d4ed8;
        margin-bottom: 0.5rem;
        font-weight: 700;
    }

    .contact-form {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-radius: 20px;
        padding: 2rem;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(30, 58, 138, 0.1);
    }

    .contact-form input,
    .contact-form textarea {
        padding: 15px;
        border-radius: 10px;
        border: 2px solid rgba(30, 58, 138, 0.2);
        font-size: 1rem;
        transition: border-color 0.3s ease;
        width: 100%;
        margin-bottom: 1rem;
    }

    .contact-form input:focus,
    .contact-form textarea:focus {
        border-color: #1d4ed8;
        outline: none;
        box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
    }

    .contact-info {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        color: white;
        padding: 2rem;
        border-radius: 20px;
        box-shadow: 0 20px 40px rgba(30, 58, 138, 0.3);
        position: relative;
        overflow: hidden;
    }

    .contact-info::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
        animation: float 8s ease-in-out infinite;
    }

    .contact-item {
        margin-bottom: 1.5rem;
        padding: 1.2rem;
        background: rgba(255, 255, 255, 0.15);
        border-radius: 15px;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
        position: relative;
        z-index: 2;
        transition: all 0.3s ease;
    }

    .contact-item:hover {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
    }

    .contact-item h3 {
        font-size: 1.3rem;
        margin-bottom: 0.8rem;
        color: white;
        font-weight: 600;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .contact-item p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.9);
        margin: 0;
        font-weight: 400;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 120px 0 80px;
        min-height: 100vh;
        background-attachment: scroll !important;
        display: flex;
        align-items: center;
    }

    .hero-container {
        padding: 0 10px;
        gap: 2rem;
    }

    .hero-content {
        padding: 1.5rem;
    }

    .hero-content h2 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }

    .hero-content p {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        padding: 0 0.5rem;
    }

    .video-showcase video,
    .video-showcase img {
        height: 220px !important;
        border-radius: 15px !important;
    }

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

    .hero-buttons .btn {
        min-width: 160px;
        padding: 12px 20px;
        font-size: 1rem;
    }

    .location-title {
        font-size: 2.2rem;
        margin-bottom: 1rem;
    }

    .location-description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        padding: 0 0.5rem;
    }

    .location-image img {
        height: 280px;
    }

    .locations-slider {
        min-height: 550px;
    }

    .nav-dot {
        width: 14px;
        height: 14px;
    }

    .video-category .section-desc {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .video-category .section-header {
        text-align: center;
        margin-bottom: 2rem;
    }

    .video-category .section-header h2 {
        font-size: 1.8rem;
        margin-bottom: 0.8rem;
    }

    .tab-images {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0 1rem;
    }

    .tab-item {
        width: 100%;
        margin-bottom: 1rem;
        height: 200px;
        border-radius: 15px;
    }

    .tab-item img {
        height: 100%;
        object-fit: cover;
    }

    .tab-overlay {
        padding: 1.5rem 1.5rem 1rem;
        min-height: 80px;
    }

    .tab-overlay h4 {
        font-size: 1.2rem;
        margin-bottom: 0.3rem;
    }

    .tab-overlay p {
        font-size: 0.85rem;
    }

    .content-card {
        padding: 2rem 1.5rem;
        min-height: 420px;
        text-align: center;
        margin-bottom: 4rem;
        background: white;
        color: #333;
    }

    .content-card h3 {
        font-size: 1.4rem;
        margin-bottom: 0.8rem;
        color: #333;
    }

    .content-card .en-subtitle {
        font-size: 0.95rem;
        margin-bottom: 1.2rem;
        color: #1e3a8a;
    }

    .content-card .description {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 1.8rem;
        color: #666;
    }

    .custom-btn {
        background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
        color: white;
        padding: 10px 25px;
        border-radius: 20px;
        font-weight: 600;
        font-size: 0.95rem;
        text-decoration: none;
        display: inline-block;
        transition: all 0.3s ease;
        box-shadow: 0 6px 20px rgba(30, 58, 138, 0.3);
        border: none;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .portfolio-item {
        margin-bottom: 1.5rem;
    }

    .portfolio-image img {
        height: 200px !important;
    }

    .portfolio-info {
        padding: 1.2rem;
    }

    .portfolio-info h3 {
        font-size: 1.2rem;
        margin-bottom: 0.6rem;
    }

    .portfolio-info p {
        font-size: 0.95rem;
        line-height: 1.5;
        margin-bottom: 1rem;
    }

    .portfolio-tags {
        flex-wrap: wrap;
        gap: 0.4rem;
    }

    .portfolio-tags .tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .achievement-item {
        padding: 1.5rem 1rem;
    }

    .achievement-number {
        font-size: 2.2rem;
    }

    .about-content,
    .contact-content {
        gap: 2rem;
        padding: 0 0.5rem;
    }

    .stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-item {
        min-width: auto;
        padding: 1.2rem;
    }

    .contact-form {
        padding: 1.5rem;
        background: rgba(255, 255, 255, 0.98);
        border-radius: 20px;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    }

    .contact-form input,
    .contact-form textarea {
        padding: 12px 15px;
        font-size: 0.95rem;
        border-radius: 10px;
        border: 2px solid rgba(30, 58, 138, 0.2);
        width: 100%;
        margin-bottom: 1rem;
        transition: all 0.3s ease;
    }

    .contact-form input:focus,
    .contact-form textarea:focus {
        border-color: #1d4ed8;
        outline: none;
        box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
    }

    .contact-info {
        padding: 1.5rem;
        margin-top: 1rem;
    }

    .contact-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .contact-item h3 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }

    .contact-item p {
        font-size: 1rem;
    }

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

    .process-step {
        padding: 1.5rem 1rem;
        min-height: 220px;
    }

    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .step-content h3 {
        font-size: 1.2rem;
        padding: 0.8rem 1rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-desc {
        font-size: 1rem;
        padding: 0 0.5rem;
    }
}

/* 视频模态框样式 */
.video-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease;
}

.video-modal-content {
    position: relative;
    background-color: #000;
    margin: 5% auto;
    padding: 0;
    width: 90%;
    max-width: 1000px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.video-modal-header {
    background: linear-gradient(135deg, #333, #555);
    padding: 15px 20px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.video-modal-close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.video-modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.video-container {
    position: relative;
    width: 100%;
    background: #000;
}

#modalVideo {
    width: 100%;
    height: auto;
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

.video-modal.closing {
    animation: fadeOut 0.3s ease;
}

/* 移动端视频模态框优化 */
@media (max-width: 768px) {
    .video-modal-content {
        width: 95%;
        margin: 10% auto;
    }

    .video-modal-header {
        padding: 10px 15px;
    }

    .video-modal-close {
        font-size: 24px;
    }
}

/* Brand Customization Section (广告区域) */
.brand-customization {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f7ff 0%, #e1f0ff 100%);
    position: relative;
    overflow: hidden;
}

.brand-customization::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(30, 58, 138, 0.05) 0%, transparent 70%);
    animation: float 12s ease-in-out infinite;
}

.customization-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.customization-text {
    text-align: center;
    padding: 2rem;
}

.customization-text h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 1rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.customization-text h3 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #4a5568;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.customization-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.customization-image img {
    transition: transform 0.3s ease;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

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

/* WHY US Section */
.why-us {
    padding: 120px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #1d4ed8 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.why-us::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
}

.why-us-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.why-us-text {
    padding: 2rem;
}

.why-us-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    font-family: 'Orbitron', monospace;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.why-us-text h3 {
    font-size: 2.2rem;
    font-weight: 600;
    color: white;
    margin-bottom: 2rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.why-us-text p {
    font-size: 1.3rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
}

.why-us-quote {
    margin: 2rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.why-us-quote blockquote {
    font-size: 1.5rem;
    font-style: italic;
    color: white;
    text-align: center;
    margin: 0;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    line-height: 1.6;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
}

.why-us-quote blockquote::before {
    content: '"';
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.3);
    position: absolute;
    top: -20px;
    left: -10px;
    font-family: serif;
}

.why-us-quote blockquote::after {
    content: '"';
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.3);
    position: absolute;
    bottom: -40px;
    right: -10px;
    font-family: serif;
}

.why-us-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.why-us-image img {
    transition: transform 0.3s ease;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.why-us-image:hover img {
    transform: scale(1.03);
}

/* Portfolio Slogan Styles (作品集广告语) */
.portfolio-slogan {
    text-align: center;
    margin: 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.05), rgba(29, 78, 216, 0.05));
    border-radius: 20px;
    border: 1px solid rgba(30, 58, 138, 0.1);
    position: relative;
    overflow: hidden;
}

.portfolio-slogan::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(30, 58, 138, 0.03) 0%, transparent 70%);
    animation: float 10s ease-in-out infinite;
    z-index: 0;
}

.portfolio-slogan h3 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 1rem;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
}

.portfolio-subtitle {
    font-size: 1.3rem;
    color: #666;
    font-style: italic;
    margin: 0;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

/* FAQ Section */
.faq {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #ebf4ff 100%);
    position: relative;
    overflow: hidden;
}

.faq::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(30, 58, 138, 0.05) 0%, transparent 70%);
    animation: float 15s ease-in-out infinite;
}

.faq .section-header {
    text-align: left;
    margin-bottom: 3rem;
    position: relative;
    z-index: 2;
}

.faq .section-header h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    color: #000;
}

.faq .en-title {
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    color: #000;
}

.faq .cn-title {
    font-family: 'Source Han Sans', Geneva, sans-serif;
    color: #000;
}

.faq .section-desc {
    font-size: 1.1rem;
    color: #666;
    margin-top: 1rem;
    line-height: 1.6;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    z-index: 2;
}

.faq-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(30, 58, 138, 0.1);
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(30, 58, 138, 0.15);
    border-color: rgba(30, 58, 138, 0.2);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    cursor: pointer;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.02), rgba(29, 78, 216, 0.02));
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.05), rgba(29, 78, 216, 0.05));
}

.faq-question h3 {
    font-size: 1.3rem;
    color: #1a365d;
    margin: 0;
    font-weight: 600;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    line-height: 1.4;
    flex: 1;
    padding-right: 1rem;
}

.faq-toggle {
    font-size: 2rem;
    color: #1d4ed8;
    font-weight: 300;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(30, 58, 138, 0.1);
    border-radius: 50%;
    cursor: pointer;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
    background: linear-gradient(135deg, #1e3a8a, #1d4ed8);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: white;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 2rem 2rem;
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #555;
    font-family: 'Source Han Sans', Geneva, sans-serif;
    border-top: 1px solid rgba(30, 58, 138, 0.1);
    padding-top: 1.5rem;
}

/* 响应式样式 - 新增区域移动端适配 */
@media (max-width: 768px) {
    /* Brand Customization 移动端 */
    .brand-customization {
        padding: 60px 0;
    }

    .customization-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .customization-text h2 {
        font-size: 2rem;
        margin-bottom: 0.8rem;
    }

    .customization-text h3 {
        font-size: 1.8rem;
    }

    .customization-image {
        padding: 1rem;
    }

    /* WHY US 移动端 */
    .why-us {
        padding: 80px 0;
    }

    .why-us-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .why-us-text {
        padding: 1rem;
        order: 2;
    }

    .why-us-text h2 {
        font-size: 2rem;
        letter-spacing: 1px;
    }

    .why-us-text h3 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .why-us-text p {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }

    .why-us-quote {
        margin: 1.5rem 0;
        padding: 1.5rem;
    }

    .why-us-quote blockquote {
        font-size: 1.2rem;
    }

    .why-us-quote blockquote::before,
    .why-us-quote blockquote::after {
        font-size: 3rem;
    }

    .why-us-image {
        order: 1;
        padding: 1rem;
    }

    .why-us-image img {
        height: 250px !important;
        border-radius: 15px !important;
    }

    /* Portfolio Slogan 移动端 */
    .portfolio-slogan {
        margin: 1.5rem 0;
        padding: 1.5rem;
    }

    .portfolio-slogan h3 {
        font-size: 1.8rem;
        margin-bottom: 0.8rem;
    }

    .portfolio-subtitle {
        font-size: 1.1rem;
    }

    /* FAQ 移动端 */
    .faq {
        padding: 60px 0;
    }

    .faq .section-header {
        text-align: center;
        margin-bottom: 2rem;
    }

    .faq .section-header h2 {
        font-size: 2rem;
    }

    .faq-list {
        gap: 1rem;
    }

    .faq-question {
        padding: 1.5rem;
    }

    .faq-question h3 {
        font-size: 1.1rem;
        padding-right: 0.5rem;
    }

    .faq-toggle {
        width: 35px;
        height: 35px;
        font-size: 1.5rem;
    }

    .faq-answer p {
        padding: 0 1.5rem 1.5rem;
        font-size: 1rem;
        padding-top: 1rem;
    }
}

@media (max-width: 480px) {
    /* Brand Customization 超小屏幕 */
    .customization-text h2 {
        font-size: 1.8rem;
    }

    .customization-text h3 {
        font-size: 1.5rem;
    }

    /* WHY US 超小屏幕 */
    .why-us-text h2 {
        font-size: 1.8rem;
    }

    .why-us-text h3 {
        font-size: 1.5rem;
    }

    .why-us-text p {
        font-size: 1rem;
    }

    .why-us-quote blockquote {
        font-size: 1.1rem;
    }

    .why-us-image img {
        height: 220px !important;
    }

    /* Portfolio Slogan 超小屏幕 */
    .portfolio-slogan h3 {
        font-size: 1.5rem;
    }

    .portfolio-subtitle {
        font-size: 1rem;
    }

    /* FAQ 超小屏幕 */
    .faq .section-header h2 {
        font-size: 1.8rem;
    }

    .faq-question {
        padding: 1rem;
    }

    .faq-question h3 {
        font-size: 1rem;
    }

    .faq-toggle {
        width: 30px;
        height: 30px;
        font-size: 1.3rem;
    }

    .faq-answer p {
        padding: 0 1rem 1rem;
        font-size: 0.95rem;
    }
}