.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: background-color var(--transition-fast);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.9);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-light);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo {
    flex-shrink: 0;
}

.header-logo img {
    height: 60px;
    filter: brightness(0) invert(1);
}

.footer-logo {
    height: 60px;
    filter: brightness(0) invert(1);
    margin-bottom: 16px;
    display: inline-block;
}

.header-nav {
    display: flex;
    gap: 32px;
}

.header-nav a {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.header-nav a:hover,
.header-nav a.active {
    color: var(--color-text-light);
}

.header-cta {
    flex-shrink: 0;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    align-items: center;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-light);
    transition: all var(--transition-fast);
}

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

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

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

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-primary);
    padding: 80px 24px 24px;
    transition: right var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-heavy);
}

.mobile-nav.open {
    right: 0;
}

.mobile-nav a {
    display: block;
    padding: 16px 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav a:hover {
    color: var(--color-accent);
}

.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mobile-overlay.show {
    opacity: 1;
}

@media (max-width: 1023px) {
    .header-nav, .header-cta {
        display: none;
    }
    .hamburger {
        display: flex;
    }
    .mobile-nav {
        display: block;
    }
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: linear-gradient(135deg, #0A1628 0%, #1E3A5F 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../assets/images/主页.png') center/cover no-repeat;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 0 24px;
}

.hero h1 {
    margin-bottom: 24px;
    font-size: 64px;
    letter-spacing: -1px;
}

.hero .subtitle {
    font-size: 20px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.6;
}

@media (max-width: 767px) {
    .hero h1 {
        font-size: 36px;
    }
    .hero .subtitle {
        font-size: 16px;
    }
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.bento-card {
    background-color: var(--color-secondary);
    border-radius: var(--radius-card);
    padding: 32px;
    transition: all var(--transition-normal);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.bento-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.bento-card .card-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    opacity: 0;
}

.bento-card:hover .card-detail {
    max-height: 200px;
    opacity: 1;
}

.bento-card h3 {
    margin-bottom: 8px;
}

.bento-card p {
    font-size: 14px;
    margin-bottom: 16px;
}

.bento-card--large {
    grid-column: span 2;
    grid-row: span 2;
}

.bento-card--vertical {
    grid-column: span 1;
    grid-row: span 2;
}

.bento-card--square {
    grid-column: span 1;
    grid-row: span 1;
}

@media (max-width: 1023px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .bento-card--large,
    .bento-card--vertical {
        grid-column: span 1;
        grid-row: span 1;
    }
}

@media (max-width: 767px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 40px 0;
    overflow: hidden;
}

.logo-scroll {
    display: flex;
    gap: 60px;
    animation: scroll 30s linear infinite;
}

.logo-scroll:hover {
    animation-play-state: paused;
}

.logo-scroll .logo-item {
    flex-shrink: 0;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-muted);
}

.logo-scroll .logo-item:hover {
    opacity: 1;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.contact-form-section {
    max-width: 800px;
    margin: 0 auto;
}

.footer {
    background-color: var(--color-secondary);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--color-text-light);
}

.footer-col p,
.footer-col a {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 2;
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
    color: var(--color-text-muted);
}

@media (max-width: 767px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

.page-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #0A1628 0%, #1E3A5F 100%);
    text-align: center;
}

.page-hero h1 {
    margin-bottom: 16px;
}

.product-detail-block {
    padding: 80px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.product-detail-block:nth-child(even) {
    background-color: rgba(30, 58, 95, 0.3);
}

.product-detail-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-detail-inner.reverse {
    direction: rtl;
}

.product-detail-inner.reverse > * {
    direction: ltr;
}

@media (max-width: 767px) {
    .product-detail-inner {
        grid-template-columns: 1fr;
    }
}

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

.timeline {
    position: relative;
    max-width: 800px;
    margin: 60px auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-tech-blue);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
    text-align: right;
}

.timeline-content {
    width: 45%;
    padding: 20px;
    background-color: var(--color-secondary);
    border-radius: var(--radius-card);
}

.timeline-dot {
    width: 16px;
    height: 16px;
    background-color: var(--color-accent);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

@media (max-width: 767px) {
    .timeline::before {
        left: 20px;
    }
    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: row;
        text-align: left;
        padding-left: 50px;
    }
    .timeline-content {
        width: 100%;
    }
    .timeline-dot {
        left: 20px;
    }
}

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

.team-card {
    text-align: center;
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-tech-blue), var(--color-secondary));
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
}

@media (max-width: 767px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 60px;
}

.contact-form-section {
    max-width: 100%;
    width: 100%;
}

@media (max-width: 767px) {
    .contact-info-grid {
        grid-template-columns: 1fr;
    }
}