body {
    padding-top: 100px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Section - Enhanced with Logos */
.header {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: 400% 400%;
    animation: techFlow 8s ease infinite;
    opacity: 0.05;
}

@keyframes techFlow {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

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

.header h1 {
    font-family: "Orbitron", sans-serif;
    font-size: 3.2em;
    font-weight: 900;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header .subtitle {
    font-size: 1.3em;
    color: var(--primary-color);
    font-weight: 500;
    letter-spacing: 1px;
}

/* Prominent Customer Logos Section */
.hero-logos {
    padding: 30px;
    margin: 30px 0 0;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.hero-logos h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.4em;
    color: var(--text-secondary);
    margin-bottom: 25px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-logos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 25px;
    align-items: center;
}

.hero-logo-item {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-logo-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(0, 102, 204, 0.1),
        transparent
    );
    transition: left 0.5s ease;
}

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

.hero-logo-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
    transform: translateY(-5px) scale(1.02);
}

.hero-logo-item img {
    max-width: 100%;
    height: 45px;
    object-fit: contain;
    filter: grayscale(0.3) contrast(1.1);
    transition: all 0.3s ease;
}

.hero-logo-item:hover img {
    filter: grayscale(0) contrast(1.2);
}

/* Section Styling - Unified Background */
.section {
    padding: 50px;
    position: relative;
    transition: all 0.3s ease;
}

.section h2 {
    font-family: "Orbitron", sans-serif;
    font-size: 2.3em;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
}

.section h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section p {
    font-size: 1.1em;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.feature-item {
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    position: relative;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.feature-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 15px 0 0 15px;
}

/* 可点击指示器 */
.feature-item::after {
    content: "→";
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5em;
    color: var(--primary-color);
    opacity: 0.6;
    transition: all 0.3s ease;
}

.feature-item:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.feature-item:hover::after {
    opacity: 1;
    transform: translateX(5px);
}

.feature-item h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.2em;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 1em;
    line-height: 1.6;
}

/* Applications List */
.applications-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.application-item {
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.application-item:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-medium);
    transform: translateY(-3px);
}

/* Product Images */
.product-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.product-image {
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    transition: all 0.3s ease;
    padding: 20px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.product-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
}

.product-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.product-image p {
    margin-top: 15px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1em;
}

/* Secondary Logos Section (if needed) */
.secondary-logos {
    text-align: center;
    margin-top: 30px;
}

.secondary-logos h3 {
    font-size: 1.2em;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 0px 15px 0px;
    }

    .header h1 {
        font-size: 2.5em;
    }

    .header .subtitle {
        font-size: 1.1em;
        margin-bottom: 30px;
    }

    .hero-logos {
        padding: 20px;
        margin: 20px 0 0;
    }

    .hero-logos-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 15px;
    }

    .section {
        padding: 30px 20px;
        margin: 0px 0;
    }

    .section h2 {
        font-size: 2em;
    }

    .features-grid,
    .applications-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-images {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Tech pattern background */
.tech-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image:
        radial-gradient(
            circle at 25px 25px,
            var(--primary-color) 2px,
            transparent 0
        ),
        radial-gradient(
            circle at 75px 75px,
            var(--primary-color) 2px,
            transparent 0
        );
    background-size: 100px 100px;
    pointer-events: none;
}

/* Key Specifications */
.key-specs {
    margin: 30px 0;
    padding: 30px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.key-specs h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.4em;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.spec-item {
    display: flex;
    align-items: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.spec-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.spec-icon {
    font-size: 2em;
    margin-right: 15px;
    color: var(--primary-color);
}

.spec-content {
    flex: 1;
}

.spec-label {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 5px;
    font-weight: 500;
}

.spec-value {
    font-size: 1.2em;
    color: var(--primary-color);
    font-weight: 600;
}

/* Specs link */
.specs-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.specs-link:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

/* Feature section link */
.feature-section-link {
    text-align: center;
    margin-top: 30px;
}

.feature-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px solid var(--primary-color);
    transition: all 0.3s ease;
    font-size: 1.1em;
}

.feature-link:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

/* Model Comparison */
.model-comparison {
    margin: 30px 0;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.model-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.model-card .model-specs {
    text-decoration: none;
    color: inherit;
}

.model-card .model-spec-item {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.model-card:hover .model-spec-item {
    background: rgba(0, 102, 204, 0.05);
    border-radius: 5px;
    padding: 8px 5px;
}

.model-card .model-spec-item:hover {
    background: rgba(0, 102, 204, 0.1);
    border-radius: 5px;
    padding: 8px 10px;
}

.model-card h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.5em;
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: 700;
}

.model-specs {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.model-spec-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.model-spec-item:last-child {
    border-bottom: none;
}

.model-spec-item .spec-icon {
    font-size: 1.2em;
    margin-right: 10px;
    color: var(--primary-color);
}

.model-spec-item .spec-label {
    font-size: 0.9em;
    color: var(--text-muted);
    font-weight: 500;
}

.model-spec-item .spec-value {
    font-size: 1.1em;
    color: var(--text-primary);
    font-weight: 600;
}

.common-specs {
    margin-top: 40px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.common-specs h3 {
    font-family: "Orbitron", sans-serif;
    font-size: 1.4em;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}