* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


:root {
    --primary-color: #0D7377;
    --primary-light: #14A3A8;
    --primary-dark: #095355;
    --accent-color: #32E0C4;
    --bg-light: #F0F7F7;
    --bg-white: #FFFFFF;
    --text-dark: #1A2B3C;
    --text-gray: #5A6B7C;
    --shadow-color: rgba(13, 115, 119, 0.2);
    --metal-dark: #1a2a35;
    --metal-mid: #2a3f4d;
    --metal-light: #3d5a6e;
    --steel-blue: #4a7c9b;
    --nav-bg-color: #f8f8f8;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

.navbar {
    background: var(--nav-bg-color);
    box-shadow: 
        0 2px 20px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 88px;
    z-index: 1000;
    transition: all 0.15s ease;
    border-bottom: 1px solid rgba(13, 115, 119, 0.15);
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--primary-dark), 
        var(--accent-color), 
        var(--primary-light), 
        var(--accent-color), 
        var(--primary-dark));
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(50, 224, 196, 0.5), 
        transparent);
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    position: relative;
}

.navbar::after {
    display: none;
}

.logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--bg-white);
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    position: relative;
}

.logo-text span {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 500;
    transition: all 0.15s ease;
    position: relative;
    background: transparent;
    letter-spacing: 1px;
}

.nav-text {
    display: block;
    line-height: 1.2;
}

.nav-en {
    display: block;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-gray);
    /* margin-top: 2px; */
    letter-spacing: 0.5px;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    transition: all 0.15s ease;
    transform: translateX(-50%);
    box-shadow: 0 0 10px var(--accent-color);
}

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

.nav-link:hover::before {
    width: 80%;
}

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

.nav-link.active::before {
    width: 80%;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-light), var(--accent-color));
}

.contact-btn {
    background: var(--primary-color);
    color: white !important;
    padding: 8px 20px;
    font-weight: 600;
    border: none;
    letter-spacing: 1px;
}

.contact-btn .nav-en {
    color: rgba(255, 255, 255, 0.8) !important;
}

.contact-btn:hover {
    background: var(--primary-light);
}

.contact-btn::before,
.contact-btn::after {
    display: none;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 12px;
    background: linear-gradient(145deg, var(--metal-light), var(--metal-mid));
    border: 1px solid rgba(50, 224, 196, 0.2);
    box-shadow: 
        0 3px 10px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.mobile-toggle:hover {
    border-color: rgba(50, 224, 196, 0.4);
}

.mobile-toggle span {
    width: 26px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-light));
    transition: all 0.15s ease;
    box-shadow: 0 0 8px rgba(50, 224, 196, 0.5);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 1024px) {
    .nav-menu {
        gap: 4px;
    }

    .nav-link {
        padding: 10px 14px;
        font-size: 14px;
    }

    .logo-text {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 88px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.15s ease;
        border-top: 1px solid rgba(13, 115, 119, 0.1);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 16px 20px;
        font-size: 16px;
        color: var(--text-dark);
        background: transparent;
        border: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    }

    .nav-link::before {
        display: none;
    }

    .nav-link:hover {
        background: rgba(13, 115, 119, 0.05);
    }

    .contact-btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        margin-top: 10px;
    }

    .contact-btn .nav-en {
        color: var(--text-gray) !important;
    }
}

.main-content {
    padding-top: 88px;
    min-height: 100vh;
}

.hero {
    height: calc(100vh - 88px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(13, 115, 119, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(50, 224, 196, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, #e8f4f4 0%, #d0e8e8 50%, #c8e4e4 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(13, 115, 119, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 115, 119, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero::after {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, 
        rgba(50, 224, 196, 0.08) 0%, 
        transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { 
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% { 
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.8;
    }
}

.hero-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, 
        rgba(13, 115, 119, 0.12) 0%, 
        transparent 70%);
    top: 10%;
    right: 10%;
    animation: float 8s ease-in-out infinite;
}

.hero-glow-2 {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, 
        rgba(50, 224, 196, 0.08) 0%, 
        transparent 70%);
    bottom: 15%;
    left: 10%;
    animation: float 6s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(40px, 40px); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 40px;
    position: relative;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    color: var(--metal-dark);
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: 4px;
    text-shadow: 0 4px 20px rgba(13, 115, 119, 0.2);
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--metal-mid);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: 2px;
    line-height: 1.8;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(145deg, var(--primary-light), var(--primary-color));
    color: white;
    padding: 18px 42px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 2px;
    box-shadow: 
        0 8px 30px rgba(13, 115, 119, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -3px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(50, 224, 196, 0.4);
    position: relative;
    overflow: hidden;
    transition: all 0.15s ease;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    transition: left 0.25s ease;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 12px 40px rgba(13, 115, 119, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -3px 8px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover::before {
    left: 100%;
}

.hero-decoration {
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px solid rgba(50, 224, 196, 0.2);
    top: 15%;
    left: 10%;
    transform: rotate(45deg);
    animation: rotate 20s linear infinite;
}

.hero-decoration::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    border: 2px solid rgba(13, 115, 119, 0.2);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-decoration-2 {
    position: absolute;
    width: 80px;
    height: 80px;
    border: 2px solid rgba(50, 224, 196, 0.15);
    bottom: 20%;
    right: 15%;
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes rotate {
    0% { transform: rotate(45deg); }
    100% { transform: rotate(405deg); }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
        letter-spacing: 2px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-content {
        padding: 20px;
    }

    .hero-decoration {
        width: 60px;
        height: 60px;
        top: 10%;
        left: 5%;
    }

    .hero-decoration::before {
        width: 40px;
        height: 40px;
    }

    .hero-decoration-2 {
        width: 50px;
        height: 50px;
        bottom: 10%;
        right: 5%;
    }
}

.product-section {
    padding: 60px 24px;
    background: var(--primary-light);
}

.tab-container {
    max-width: 1400px;
    margin: 0 auto;
}

.tab-header {
    display: flex;
    background: #f5f9f9;
    overflow: hidden;
}

.tab-btn {
    flex: 1;
    padding: 18px 24px;
    background: transparent;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.15s ease;
}

.tab-btn:hover {
    color: var(--primary-color);
    background: rgba(13, 115, 119, 0.03);
}

.tab-btn:hover::after {
    transform: scaleX(1);
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    background: var(--bg-white);
    padding: 30px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.15s ease;
}

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

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-item {
    padding: 20px;
    background: white;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    position: relative;
}

.product-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #0D7377, #14919B);
    box-shadow: 0 0 6px #0D7377;
    transition: width 0.3s ease;
}

.product-item::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(180deg, transparent, #0D7377, #14919B);
    box-shadow: 0 0 6px #0D7377;
    transition: height 0.3s ease;
}

.product-item .border-right,
.product-item .border-bottom {
    position: absolute;
    background: linear-gradient(180deg, #0D7377, #14919B);
    box-shadow: 0 0 6px #0D7377;
    opacity: 0;
    transition: all 0.3s ease;
}

.product-item .border-right {
    right: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(180deg, #14919B, #0D7377);
}

.product-item .border-bottom {
    right: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #14919B, #0D7377);
}

.product-item:hover::before {
    width: 100%;
}

.product-item:hover::after {
    height: 100%;
}

.product-item:hover .border-right {
    opacity: 1;
    height: 100%;
}

.product-item:hover .border-bottom {
    opacity: 1;
    width: 100%;
}

.product-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(13, 115, 119, 0.2);
}

.product-image {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, #e8f4f4 0%, #d0e8e8 100%);
    margin-bottom: 16px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    text-align: left;
}

.product-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.product-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.5;
}

.tab-footer {
    padding: 30px 0 0;
    text-align: center;
}

.tab-panel-footer {
    padding: 30px 0 20px;
    text-align: center;
}

.load-more-btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--bg-white);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
}

.load-more-btn:hover {
    background: var(--primary-color);
    color: white;
}

@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .product-section {
        padding: 40px 16px;
    }

    .tab-header {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 1 50%;
        padding: 14px;
        font-size: 14px;
    }

    .tab-content {
        padding: 20px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-item {
        padding: 10px;
    }

    .product-name {
        font-size: 14px;
    }

    .product-desc {
        font-size: 12px;
    }
}

.carousel {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin-top: 80px;
}

.carousel-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(135deg, #e8f4f4 0%, #d0e8e8 50%, #c8e0e0 100%);
}

.carousel-slides {
    position: relative;
    z-index: 1;
    display: flex;
    height: 100%;
    transition: transform 0.5s ease;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide-1 {
    background: linear-gradient(135deg, #e8f4f4 0%, #d0e8e8 50%, #c8e0e0 100%);
}

.carousel-slide-2 {
    background: linear-gradient(135deg, #e0f0f0 0%, #c8e4e4 50%, #b8d8d8 100%);
}

.carousel-slide-3 {
    background: linear-gradient(135deg, #d8ebe8 0%, #c0ded8 50%, #a8d0c8 100%);
}

.carousel-slide-4 {
    background: linear-gradient(135deg, #d4e8e4 0%, #b8d8d0 50%, #9cc8c0 100%);
}

.carousel-slide-5 {
    background: linear-gradient(135deg, #d0e4e0 0%, #b0d4cc 50%, #90c4bc 100%);
}

.slide-content {
    text-align: center;
    z-index: 2;
    padding: 40px;
    max-width: 900px;
    position: relative;
}

.slide-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    letter-spacing: 3px;
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease forwards;
}

.slide-description {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease 0.2s forwards;
}

.slide-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, 
        rgba(50, 224, 196, 0.15) 0%, 
        transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 4s ease-in-out infinite;
}

.slide-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(50, 224, 196, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(50, 224, 196, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { 
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.6;
    }
    50% { 
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 1;
    }
}

.carousel-nav {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.15);
    border: 2px solid rgba(13, 115, 119, 0.4);
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.carousel-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.carousel-dot:hover {
    background: rgba(13, 115, 119, 0.2);
    border-color: var(--primary-color);
    transform: scale(1.2);
}

.carousel-dot.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(13, 115, 119, 0.4);
}

.carousel-dot.active::before {
    opacity: 1;
}

.carousel-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
    pointer-events: none;
}

.carousel-arrow {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(13, 115, 119, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    pointer-events: auto;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.carousel-arrow:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(13, 115, 119, 0.3);
}

.carousel-arrow:hover svg {
    stroke: white;
}

.carousel-arrow svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.carousel-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 10;
}

.carousel-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    width: 0%;
    transition: width 0.1s linear;
}

.carousel.paused .carousel-progress-bar {
    animation-play-state: paused;
}

@media (max-width: 768px) {
    .carousel {
        height: 300px;
    }

    .slide-title {
        font-size: 28px;
    }

    .slide-description {
        font-size: 15px;
    }

    .slide-content {
        padding: 20px;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
    }

    .carousel-nav {
        bottom: 20px;
    }
}

.platform-intro {
    margin-bottom: 60px;
}

.intro-card {
    background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(13, 115, 119, 0.1);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.intro-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.intro-img-wrapper {
    overflow: hidden;
}

.intro-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.intro-text-wrapper {
    display: flex;
    flex-direction: column;
}

.intro-cn,
.intro-en {
    padding: 24px;
}

.intro-cn {
    border-right: 1px solid rgba(13, 115, 119, 0.15);
}

.intro-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.intro-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    border-radius: 2px;
}

.intro-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-gray);
}

.platform-development {
    margin-top: 60px;
}

.development-card {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--metal-dark) 100%);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.development-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-light), var(--accent-color));
}

.development-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.development-cn,
.development-en {
    padding: 24px;
}

.development-cn {
    border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.development-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.development-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.development-text {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.development-text p {
    margin-bottom: 12px;
}

.development-text p:last-child {
    margin-bottom: 0;
}

@media (max-width: 992px) {
    .intro-content,
    .development-content {
        grid-template-columns: 1fr;
    }

    .intro-images {
        flex-direction: row;
    }

    .intro-img {
        height: 180px;
    }

    .intro-cn {
        border-right: none;
        border-bottom: 1px solid rgba(13, 115, 119, 0.15);
        padding-bottom: 30px;
    }

    .development-cn {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        padding-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .intro-card,
    .development-card {
        padding: 24px;
    }

    .intro-images {
        flex-direction: column;
    }

    .intro-img {
        height: 160px;
    }

    .intro-title,
    .development-title {
        font-size: 18px;
    }

    .intro-text,
    .development-text {
        font-size: 14px;
    }
}

.footer {
    background: var(--metal-dark);
    color: #fff;
    padding: 60px 24px 30px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    height: 70px;
    width: auto;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-color);
}

.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-menu li {
    margin-bottom: 12px;
}

.footer-menu a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.15s ease;
}

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

.footer-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact-list li {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 12px;
    line-height: 1.6;
}

.social-icons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
}

.social-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
}

.social-wechat {
    width: 80px;
    height: 80px;
    background: white;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.social-label {
    font-size: 12px;
}

.social-qq {
    font-size: 13px;
    color: var(--text-dark);
}

.social-icon {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.15s ease;
}

.social-icon:hover {
    background: var(--primary-color);
    color: #fff;
}

.footer-bottom {
    max-width: 1400px;
    margin: 40px auto 0;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    margin: 0;
}

@media (max-width: 1024px) {
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 40px 16px 20px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

    .footer-logo {
        display: block;
        margin: 0 auto 20px;
    }

    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links,
    .footer-contact,
    .footer-social {
        text-align: center;
    }

    .social-icons {
        justify-content: center;
    }
}

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

.page-header {
    position: relative;
    height: 300px;
    margin-top: 88px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--metal-dark) 100%);
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(50, 224, 196, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(20, 163, 168, 0.15) 0%, transparent 50%);
}

.platform-header .page-header-bg {
    background: url('./images/pf.jpg') center center / cover no-repeat;
}

.platform-header .page-header-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.news-header .page-header-bg {
    background: url('./images/qz.jpg') center center / cover no-repeat;
}

.news-header .page-header-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 2px;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 16px;
}

.title-decoration {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent-color));
    margin: 0 auto 40px;
    border-radius: 2px;
}

.main-content {
    padding-top: 0;
}

.about-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.about-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.about-desc {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-gray);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(13, 115, 119, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    border-radius: 50%;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: white;
    fill: none;
    stroke-width: 2;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

.history-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-light), var(--accent-color));
}

.timeline-item {
    position: relative;
    padding: 20px 0;
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 40px);
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 40px);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--primary-light);
    border-radius: 50%;
    border: 3px solid var(--bg-light);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.timeline-content {
    background: white;
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    max-width: 350px;
}

.timeline-year {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-gray);
}

.partner-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.partner-item {
    padding: 40px 20px;
    background: var(--bg-light);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(13, 115, 119, 0.1);
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--primary-light);
}

.partner-logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.partner-name {
    font-size: 14px;
    color: var(--text-gray);
}

.products-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.product-card {
    background: white;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.product-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--metal-mid), var(--metal-light));
    position: relative;
    flex-shrink: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.product-card-badge:hover {
    box-shadow: 0 0 10px #0D7377, 0 0 20px rgba(13, 115, 119, 0.4);
}

.product-card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    min-height: 180px;
}

.product-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.product-card-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.5;
    flex: 1;
}

.product-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    flex-shrink: 0;
    padding-bottom: 2%;
}

.product-card-spec {
    color: var(--text-gray);
}

.product-card-stock {
    color: #10b981;
    font-weight: 500;
}

.product-card-btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 10px;
    background: var(--primary-color);
    color: white;
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.3s ease;
    margin-top: auto;
}

.product-card-btn:hover {
    background: var(--primary-dark);
}

.products-pagination,
.news-pagination,
.learning-pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-size-select {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-dark);
}

.page-size-select select {
    padding: 6px 12px;
    border: 1px solid rgba(13, 115, 119, 0.3);
    border-radius: 4px;
    background: white;
    color: var(--text-dark);
    font-size: 14px;
    cursor: pointer;
    outline: none;
}

.page-size-select select:hover {
    border-color: var(--primary-color);
}

.pagination {
    display: flex;
    gap: 8px;
}

.page-info {
    font-size: 14px;
    color: var(--text-light);
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(13, 115, 119, 0.2);
    background: white;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 14px;
}

.pagination-btn:hover,
.pagination-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.products-advantage {
    padding: 80px 0;
    background: var(--bg-white);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-number {
    font-size: 48px;
    font-weight: 700;
    color: rgba(13, 115, 119, 0.1);
    margin-bottom: 15px;
}

.advantage-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.advantage-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
}

.news-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.news-cta {
    padding: 60px 0;
    background: var(--primary-color);
    text-align: center;
}

.news-cta .section-title {
    color: white;
}

.news-cta .title-decoration::before,
.news-cta .title-decoration::after {
    background: rgba(255, 255, 255, 0.5);
}

.cta-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    margin-top: 20px;
}

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.news-tab {
    padding: 12px 30px;
    border: none;
    background: white;
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 500;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.news-tab:hover,
.news-tab.active {
    background: var(--primary-color);
    color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-more {
    text-align: center;
    margin-top: 40px;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    padding: 20px;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.news-image {
    display: none;
}

.news-date {
    display: inline-flex;
    flex-direction: column;
    background: var(--primary-color);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-align: center;
    margin-right: 15px;
    float: left;
}

.news-day {
    display: block;
    font-size: 20px;
    font-weight: 700;
    line-height: 1;
}

.news-month {
    display: block;
    font-size: 11px;
    opacity: 0.9;
    margin-top: 3px;
}

.news-content {
    padding: 0;
    overflow: hidden;
}

.news-content::after {
    content: "";
    display: table;
    clear: both;
}

.news-category {
    display: inline-block;
    background: rgba(13, 115, 119, 0.1);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 12px;
}

.news-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-excerpt {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

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

.newsletter-section {
    padding: 60px 0;
    background: var(--bg-white);
}

.newsletter-box {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    border-radius: 16px;
    padding: 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.newsletter-title {
    font-size: 24px;
    font-weight: 600;
    color: white;
    margin-bottom: 10px;
}

.newsletter-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-input {
    width: 300px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
}

.newsletter-btn {
    padding: 12px 30px;
    background: var(--accent-color);
    color: var(--text-dark);
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.newsletter-btn:hover {
    background: white;
}

.learning-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.learning-categories {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.learning-category {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: 2px solid rgba(13, 115, 119, 0.2);
    background: white;
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 500;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.learning-category:hover,
.learning-category.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.category-icon {
    font-size: 16px;
}

.learning-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.learning-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.learning-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.learning-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.learning-card-tag {
    background: rgba(13, 115, 119, 0.1);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.learning-card-time {
    font-size: 12px;
    color: var(--text-gray);
}

.learning-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.4;
}

.learning-card-desc {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: 15px;
}

.learning-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.learning-card-view {
    font-size: 12px;
    color: var(--text-gray);
}

.learning-card-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
}

.learning-video {
    padding: 80px 0;
    background: var(--bg-white);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.video-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.video-thumbnail {
    height: 180px;
    background: linear-gradient(135deg, var(--metal-mid), var(--steel-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.video-play {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.video-desc {
    font-size: 13px;
    color: var(--text-gray);
}

.learning-download {
    padding: 80px 0;
    background: var(--bg-light);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.download-item {
    background: white;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.download-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.download-info {
    flex: 1;
}

.download-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.download-desc {
    font-size: 13px;
    color: var(--text-gray);
}

.download-btn {
    padding: 8px 20px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.3s ease;
}

.download-btn:hover {
    background: var(--primary-dark);
}

.catalog-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (max-width: 992px) {
    .catalog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .catalog-grid {
        grid-template-columns: 1fr;
    }
}

.catalog-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.catalog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.catalog-card-cover {
    position: relative;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.catalog-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.catalog-card-default {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #999;
}

.catalog-card-icon {
    font-size: 48px;
}

.catalog-card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.catalog-card-content {
    padding: 20px;
}

.catalog-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

.catalog-card-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.catalog-card-footer {
    display: flex;
    justify-content: flex-end;
}

.catalog-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: 6px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.catalog-card-btn:hover {
    background: #0a5c5f;
    color: white;
}

.catalog-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.catalog-search {
    display: flex;
    gap: 15px;
    max-width: 600px;
    margin: 0 auto 60px;
}

.catalog-search-input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid rgba(13, 115, 119, 0.2);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.catalog-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.catalog-search-btn {
    padding: 14px 30px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

.catalog-search-btn:hover {
    background: var(--primary-dark);
}

.catalog-brands {
    margin-bottom: 60px;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.brand-card {
    background: white;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.brand-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--primary-light);
}

.brand-logo {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.brand-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.brand-count {
    font-size: 13px;
    color: var(--text-gray);
}

.catalog-categories {
    margin-bottom: 60px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.catalog-category-card {
    background: white;
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(13, 115, 119, 0.1);
}

.catalog-category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-color: var(--primary-light);
}

.catalog-category-icon {
    font-size: 36px;
    margin-bottom: 15px;
}

.catalog-category-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.catalog-category-count {
    font-size: 13px;
    color: var(--primary-color);
}

.catalog-featured {
    margin-bottom: 60px;
}

.featured-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.featured-item {
    background: white;
    border-radius: 10px;
    padding: 20px 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.featured-item:hover {
    box-shadow: 0 4px 20px var(--shadow-color);
}

.featured-rank {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.featured-info {
    flex: 1;
}

.featured-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.featured-spec {
    font-size: 13px;
    color: var(--text-gray);
}

.featured-download {
    padding: 8px 20px;
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.featured-download:hover {
    background: var(--primary-color);
    color: white;
}

.catalog-download-section {
    padding: 60px 0;
    background: var(--bg-white);
}

.download-section-box {
    background: linear-gradient(135deg, var(--metal-dark), var(--metal-mid));
    border-radius: 16px;
    padding: 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.download-section-title {
    font-size: 24px;
    font-weight: 600;
    color: white;
    margin-bottom: 10px;
}

.download-section-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.download-section-buttons {
    display: flex;
    gap: 15px;
}

.download-section-btn {
    padding: 12px 30px;
    background: white;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.download-section-btn:hover {
    background: var(--accent-color);
}

.download-section-btn-primary {
    background: var(--accent-color);
    color: var(--text-dark);
}

.download-section-btn-primary:hover {
    background: white;
}

.contact-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.contact-info-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.contact-info-desc {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 30px;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    stroke: white;
    fill: none;
    stroke-width: 2;
}

.contact-item-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-item-text {
    font-size: 14px;
    color: var(--text-gray);
}

.contact-social-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.contact-social-links {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-social-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.contact-wechat {
    width: 80px;
    height: 80px;
    background: white;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.social-qq-text {
    font-size: 13px;
    color: var(--text-dark);
    padding: 8px 16px;
    background: var(--bg-light);
}

.contact-form-wrapper {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.contact-form-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.contact-form-desc {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 30px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-input,
.form-select,
.form-textarea {
    padding: 12px 15px;
    border: 1px solid rgba(13, 115, 119, 0.2);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit-btn {
    padding: 14px 30px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 10px;
}

.form-submit-btn:hover {
    background: var(--primary-dark);
}

.map-section {
    padding: 0 0 80px;
    background: var(--bg-light);
}

.map-wrapper {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.map-placeholder {
    height: 400px;
    background: linear-gradient(135deg, var(--metal-mid), var(--metal-light));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.map-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.map-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--primary-color);
    fill: none;
    stroke-width: 2;
}

.map-text {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
}

.faq-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 25px;
    border-left: 4px solid var(--primary-color);
}

.faq-question {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.faq-answer {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.7;
}

@media (max-width: 1024px) {
    .about-features,
    .partner-grid,
    .products-grid,
    .advantage-grid,
    .brand-grid,
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .news-grid,
    .video-grid,
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .learning-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 36px;
    }
    
    .about-features,
    .partner-grid,
    .products-grid,
    .advantage-grid,
    .brand-grid,
    .category-grid,
    .news-grid,
    .video-grid,
    .download-grid,
    .learning-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-box,
    .download-section-box {
        flex-direction: column;
        text-align: center;
        gap: 25px;
    }
    
    .newsletter-form,
    .download-section-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .newsletter-input {
        width: 100%;
    }
    
    .catalog-search {
        flex-direction: column;
    }
    
    .products-filter,
    .news-tabs,
    .learning-categories {
        flex-wrap: wrap;
    }
    
    .contact-info,
    .contact-form-wrapper {
        padding: 25px;
    }
    
    .featured-item {
        flex-direction: column;
        text-align: center;
    }
}

.stats-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-number {
        font-size: 36px;
    }
}

.detail-header {
    background: #f8f9fa;
    padding: 20px 0;
    border-bottom: 1px solid #e9ecef;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.detail-content {
    padding: 50px 0;
}

.detail-content .container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}

.article {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 40px;
}

.article-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e9ecef;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.article-category {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.article-category a{
    color: white;
    text-decoration: none;
}

.article-date {
    color: var(--text-gray);
    font-size: 14px;
}

.article-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin: 0;
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
}

.article-body h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 30px 0 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 25px 0 12px;
}

.article-body p {
    margin-bottom: 15px;
}

.article-body ul,
.article-body ol {
    margin: 15px 0;
    padding-left: 25px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body strong {
    font-weight: 600;
}

.article-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
}

.tag-label {
    color: var(--text-gray);
    font-size: 14px;
}

.tag-item {
    background: #f0f0f0;
    color: var(--text-dark);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
}

.tag-item a{
    color: var(--text-dark);
    text-decoration: none;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
}

.share-label {
    color: var(--text-gray);
    font-size: 14px;
}

.share-text {
    color: var(--text-gray);
    font-size: 13px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-section {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 25px;
}

.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.related-item {
    display: flex;
    gap: 12px;
    text-decoration: none;
    padding: 10px;
    border-radius: 6px;
    transition: background 0.3s;
}

.related-item:hover {
    background: #f8f9fa;
}

.related-date {
    flex-shrink: 0;
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 500;
    min-width: 40px;
}

.related-title {
    color: var(--text-dark);
    font-size: 14px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-item {
    display: block;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 14px;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.category-item:hover {
    background: #f8f9fa;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.category-item.active {
    background: var(--primary-color);
    color: white;
}

.brand-section .brand-desc {
    font-size: 13px;
    color: var(--text-gray);
    margin: -10px 0 15px;
}

.brand-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.brand-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    border: 1px solid #e9ecef;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.brand-item:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.brand-item:hover .brand-name {
    color: var(--primary-color);
}

.brand-item:hover .brand-arrow {
    transform: translateX(3px);
    opacity: 1;
}

.brand-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    transition: color 0.3s;
}

.brand-keyword {
    font-size: 12px;
    color: var(--text-gray);
    margin-top: 2px;
}

.brand-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border-radius: 50%;
    color: white;
    opacity: 0.7;
    transition: all 0.3s;
}

.learning-detail .container {
    grid-template-columns: 300px 1fr;
}

.learning-detail .article {
    order: 2;
}

.learning-detail .sidebar {
    order: 1;
}

@media (max-width: 992px) {
    .detail-content .container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: -1;
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .sidebar-section {
        flex: 1;
        min-width: 250px;
    }

    .learning-detail .container {
        grid-template-columns: 1fr;
    }

    .learning-detail .sidebar {
        order: 2;
    }

    .learning-detail .article {
        order: 1;
    }
}

@media (max-width: 768px) {
    .article {
        padding: 25px;
    }
    
    .article-title {
        font-size: 22px;
    }
    
    .article-body {
        font-size: 15px;
    }
}

.product-detail {
    padding: 40px 0 60px;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.product-detail-image {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.product-detail-image img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
}

.product-detail-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    z-index: 10;
}

.product-detail-image-inner {
    height: 400px;
    background: linear-gradient(135deg, var(--metal-mid), var(--metal-light));
}

.product-detail-info {
    padding: 20px 0;
}

.product-detail-title {
    font-size: 28px;
    color: #1a1a1a;
    margin-bottom: 20px;
    line-height: 1.4;
}

.product-detail-meta {
    display: flex;
    gap: 30px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.product-detail-brand,
.product-detail-status {
    display: flex;
    align-items: center;
}

.meta-label {
    color: #666;
    font-size: 14px;
}

.meta-value {
    color: #1a1a1a;
    font-weight: 600;
    font-size: 14px;
}

.meta-value.status-in {
    color: #10b981;
}

.meta-value.status-out {
    color: #ef4444;
}

.product-detail-desc {
    margin-bottom: 30px;
}

.product-detail-desc p {
    color: #666;
    line-height: 1.8;
    font-size: 15px;
}

.product-detail-actions {
    display: flex;
    gap: 15px;
}

.product-detail-actions .btn {
    flex: 1;
    max-width: 180px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 15px rgba(13, 115, 119, 0.3);
}

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

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

.product-detail-content {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 50px;
}

.detail-tabs {
    display: flex;
    border-bottom: 1px solid #eee;
}

.tab-item {
    padding: 18px 30px;
    font-size: 16px;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    position: relative;
}

.tab-item.active {
    color: var(--primary-color);
}

.tab-item.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.tab-content {
    padding: 30px;
}

.detail-block {
    margin-bottom: 30px;
}

.detail-block:last-child {
    margin-bottom: 0;
}

.detail-block-title {
    font-size: 18px;
    color: #1a1a1a;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.detail-block-content {
    color: #666;
    line-height: 1.8;
    font-size: 15px;
}

.related-products {
    margin-top: 50px;
}

.related-products-title {
    font-size: 22px;
    color: #1a1a1a;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

@media (max-width: 1024px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-detail {
        padding: 20px 0 40px;
    }
    
    .product-detail-title {
        font-size: 22px;
    }
    
    .product-detail-meta {
        flex-direction: column;
        gap: 15px;
    }
    
    .product-detail-actions {
        flex-direction: column;
    }
    
    .product-detail-actions .btn {
        max-width: 100%;
    }
    
    .related-products-grid {
        grid-template-columns: 1fr;
    }
}