:root {
    /* 主色：深海蓝 - 工业稳重 */
    --color-primary: #0A2540;
    --color-primary-light: #143A5F;
    --color-primary-dark: #06172A;
    
    /* 强调色：琥珀金 - 高端精密 */
    --color-accent: #D4A24C;
    --color-accent-light: #E8BC6E;
    --color-accent-dark: #B8892F;
    
    /* 中性色 */
    --color-gray-900: #1A1D22;
    --color-gray-800: #2D3239;
    --color-gray-700: #4A515B;
    --color-gray-600: #6B7280;
    --color-gray-500: #8A9099;
    --color-gray-400: #B0B5BC;
    --color-gray-300: #D1D5DB;
    --color-gray-200: #E5E7EB;
    --color-gray-100: #F3F4F6;
    --color-gray-50: #F9FAFB;
    --color-white: #FFFFFF;
    
    /* 功能色 */
    --color-success: #2E7D5B;
    --color-warning: #C47B24;
    --color-danger: #B23A3A;
    
    /* 字体 */
    --font-display: 'Oswald', 'Noto Sans SC', sans-serif;
    --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
    --space-2xl: 64px;
    --space-3xl: 96px;
    --space-4xl: 140px;
    
    /* 容器 */
    --container-max: 1280px;
    --container-padding: 24px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 80px;
}

.main-content {
    min-height: calc(100vh - 80px);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* 标题字体 */
.font-display {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

/* 通用按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border: 2px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 162, 76, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

.btn-outline-dark {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    position: relative;
    padding: 0 24px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 16px;
    height: 1px;
    background-color: var(--color-accent);
}

.section-tag::before { left: 0; }
.section-tag::after { right: 0; }

.section-title {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.01em;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* 页面通用 */
.page-hero {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-4xl) 0 var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.95) 0%, rgba(20, 58, 95, 0.85) 100%);
    z-index: 1;
}

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

.page-hero-breadcrumb {
    font-size: 13px;
    color: var(--color-gray-400);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-hero-breadcrumb a:hover {
    color: var(--color-accent);
}

.page-hero-title {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-md);
}

.page-hero-desc {
    font-size: 18px;
    color: var(--color-gray-300);
    max-width: 600px;
}

.page-section {
    padding: var(--space-3xl) 0;
}

.page-section-alt {
    background-color: var(--color-gray-50);
}

/* 工具类 */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #ffffff;
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

/* 响应式 */
@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .page-hero-title {
        font-size: 32px;
    }
    
    .page-section {
        padding: var(--space-2xl) 0;
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

/* ============ Header ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 37, 64, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(10, 37, 64, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    transition: height var(--transition-base);
}

.site-header.scrolled .header-inner {
    height: 70px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
}

.logo-mark {
    width: 44px;
    height: 44px;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-mark svg {
    width: 100%;
    height: 100%;
}

.logo-mark .logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 6px;
    background: white;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-name {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-white);
}

.logo-sub {
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--color-gray-400);
    text-transform: uppercase;
    margin-top: 2px;
}

.header-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
}

.header-nav a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 400;
    color: var(--color-gray-300);
    position: relative;
    transition: color var(--transition-fast);
}

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

.header-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--color-accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
}

.phone-icon {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

.phone-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.phone-label {
    font-size: 11px;
    color: var(--color-gray-400);
    letter-spacing: 0.05em;
}

.phone-number {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-white);
    letter-spacing: 0.03em;
}

.mobile-menu-btn {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: white;
    transition: all var(--transition-fast);
}

.mobile-menu-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.header-mobile-cta {
    display: none;
    padding: 20px;
}

@media (max-width: 1024px) {
    .header-phone .phone-text {
        display: none;
    }
    
    .header-nav ul {
        gap: 0;
    }
    
    .header-nav a {
        padding: 8px 12px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .header-nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-primary);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
    }
    
    .header-nav.mobile-open {
        max-height: 500px;
        overflow-y: auto;
    }
    
    .header-nav ul {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
    }
    
    .header-nav a {
        padding: 14px 24px;
        font-size: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    
    .header-nav a.active::after {
        display: none;
    }
    
    .header-nav a.active {
        color: var(--color-accent);
    }
    
    .header-phone {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header-mobile-cta {
        display: block;
    }
    
    .site-header.scrolled .header-nav {
        top: 70px;
    }
}

/* ============ Footer ============ */
.site-footer {
    background-color: var(--color-primary-dark);
    color: var(--color-gray-400);
}

.footer-top {
    padding: var(--space-3xl) 0 var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
}

.footer-brand .footer-logo {
    margin-bottom: var(--space-lg);
}

.footer-brand .footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-gray-400);
    margin-bottom: var(--space-xl);
}

.footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.fci-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.fci-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.footer-col-title {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-white);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--color-accent);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    font-size: 14px;
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

.footer-bottom {
    padding: var(--space-lg) 0;
    font-size: 13px;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-lg);
}

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

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-about {
        grid-column: 1 / -1;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }
}

/* ============ Home Page ============ */

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 680px;
    display: flex;
    align-items: center;
    color: var(--color-white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(6, 23, 42, 0.92) 0%, rgba(10, 37, 64, 0.75) 50%, rgba(20, 58, 95, 0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding-top: 80px;
}

.hero-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
    padding: 6px 16px;
    border: 1px solid rgba(212, 162, 76, 0.4);
    background: rgba(212, 162, 76, 0.08);
}

.hero-title {
    font-family: var(--font-display);
    font-size: 64px;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0.01em;
    margin-bottom: var(--space-xl);
}

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    color: var(--color-gray-300);
    margin-bottom: var(--space-2xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--color-gray-400);
    font-size: 12px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 1; height: 40px; }
    50% { opacity: 0.4; height: 20px; }
}

@media (max-width: 768px) {
    .hero-section {
        min-height: 600px;
        height: auto;
        padding: 120px 0 100px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-scroll-indicator {
        display: none;
    }
}

/* Stats Bar */
.stats-bar {
    background: var(--color-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--space-xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.stat-item {
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-value {
    display: block;
    white-space: nowrap;
    font-size: 48px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: 14px;
    color: var(--color-gray-400);
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }
    
    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding-bottom: var(--space-lg);
    }
    
    .stat-item:nth-last-child(-n+2) {
        border-bottom: none;
        padding-bottom: 0;
    }
    
    .stat-value {
        font-size: 36px;
    }
}

/* Advantages */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.advantage-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(10, 37, 64, 0.1);
    border-color: var(--color-accent);
}

.advantage-card:hover::before {
    transform: scaleX(1);
}

.adv-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
}

.adv-icon svg {
    width: 32px;
    height: 32px;
}

.adv-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.adv-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

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

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

/* Product Cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.product-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(10, 37, 64, 0.12);
}

.product-card-img {
    position: relative;
    height: 260px;
    overflow: hidden;
    background: #ffffff;
}

.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

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

.product-card-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-primary);
    color: var(--color-accent);
    padding: 6px 14px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.product-card-body {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card-name {
    font-family: var(--font-body);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.product-card-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.product-card-params {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-200);
}

.param-item {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

.param-label {
    color: var(--color-gray-500);
}

.param-value {
    color: var(--color-gray-800);
    font-weight: 500;
}

.product-card-body .btn {
    margin-top: auto;
}

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

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

/* Features Section */
.features-section {
    position: relative;
    padding: var(--space-4xl) 0;
    color: var(--color-white);
    overflow: hidden;
}

.features-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

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

.features-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(6, 23, 42, 0.95) 0%, rgba(10, 37, 64, 0.8) 60%, rgba(20, 58, 95, 0.6) 100%);
}

.features-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.feature-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(212, 162, 76, 0.4);
}

.feature-num {
    font-size: 32px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-white);
}

.feature-content p {
    font-size: 14px;
    color: var(--color-gray-400);
    line-height: 1.6;
}

@media (max-width: 992px) {
    .features-inner {
        grid-template-columns: 1fr;
    }
}

/* Tech Highlights */
.tech-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.tech-desc {
    font-size: 16px;
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.tech-points {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.tech-points li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--color-gray-700);
}

.tech-points svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

.tech-image {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.tech-image img {
    width: 100%;
    height: auto;
    display: block;
}

.tech-image-badge {
    position: absolute;
    bottom: var(--space-xl);
    right: var(--space-xl);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-left: 3px solid var(--color-accent);
}

.badge-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
}

.badge-label {
    font-size: 12px;
    color: var(--color-gray-300);
    line-height: 1.4;
}

@media (max-width: 992px) {
    .tech-highlights {
        grid-template-columns: 1fr;
    }
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: var(--space-2xl) 0;
    color: var(--color-white);
}

.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.cta-text h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.cta-text p {
    font-size: 16px;
    color: var(--color-gray-300);
    max-width: 500px;
}

.cta-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .cta-text h2 {
        font-size: 24px;
    }
    
    .cta-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-actions {
        justify-content: center;
    }
}

/* Page Hero Background */
.page-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.page-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    opacity: 0.3;
}

/* ============ About Page ============ */
.about-profile {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.profile-image {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.profile-image img {
    width: 100%;
    height: auto;
}

.profile-image-badge {
    position: absolute;
    bottom: var(--space-xl);
    left: var(--space-xl);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-left: 3px solid var(--color-accent);
}

.badge-year {
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
}

.badge-text {
    font-size: 13px;
    color: var(--color-gray-300);
    line-height: 1.4;
}

.profile-text p {
    font-size: 16px;
    color: var(--color-gray-700);
    line-height: 1.9;
    margin-bottom: var(--space-md);
}

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

@media (max-width: 992px) {
    .about-profile {
        grid-template-columns: 1fr;
    }
}

/* Values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.value-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl);
    text-align: left;
    transition: all var(--transition-base);
}

.value-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 37, 64, 0.08);
}

.value-num {
    font-size: 48px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-md);
    opacity: 0.6;
}

.value-card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.value-card p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

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

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

/* Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent), var(--color-gray-300));
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: var(--space-lg) var(--space-xl);
}

.timeline-item.left {
    left: 0;
    text-align: right;
}

.timeline-item.right {
    left: 50%;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    top: 32px;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: 3px solid var(--color-white);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--color-accent);
    z-index: 2;
}

.timeline-item.left .timeline-dot {
    right: -8px;
}

.timeline-item.right .timeline-dot {
    left: -8px;
}

.timeline-content {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(10, 37, 64, 0.08);
}

.timeline-year {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.timeline-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item.left,
    .timeline-item.right {
        width: 100%;
        left: 0;
        text-align: left;
        padding-left: 50px;
        padding-right: 0;
    }
    
    .timeline-item.left .timeline-dot,
    .timeline-item.right .timeline-dot {
        left: 12px;
        right: auto;
    }
}

/* Honors */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.honor-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.honor-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 12px 32px rgba(10, 37, 64, 0.1);
}

.honor-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.honor-icon svg {
    width: 100%;
    height: 100%;
}

.honor-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.honor-year {
    font-size: 13px;
    color: var(--color-gray-500);
}

@media (max-width: 992px) {
    .honors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============ Products Page ============ */
.product-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.overview-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.overview-feature {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--color-gray-700);
    line-height: 1.5;
}

.overview-feature svg {
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 3px;
}

.overview-image img {
    width: 100%;
    height: auto;
    border-radius: 4px;
}

@media (max-width: 992px) {
    .product-overview {
        grid-template-columns: 1fr;
    }
    
    .overview-features {
        grid-template-columns: 1fr;
    }
}

/* Spec Table */
.product-spec-table-wrapper {
    overflow-x: auto;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
}

.product-spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.product-spec-table th {
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.05em;
    padding: 16px 20px;
    text-align: left;
    text-transform: uppercase;
}

.product-spec-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-gray-200);
    color: var(--color-gray-700);
}

.product-spec-table tbody tr:hover {
    background: rgba(212, 162, 76, 0.05);
}

.product-spec-table tbody tr:last-child td {
    border-bottom: none;
}

.model-cell {
    min-width: 100px;
    font-size: 18px;
}

/* F Series Product Cards */
.f-series-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.f-product-card { background: #ffffff; border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; transition: all 0.3s; display: flex; flex-direction: column; }

.f-product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(10, 37, 64, 0.15);
    border-color: var(--color-accent);
}

.f-product-img { position: relative; width: 100%; overflow: hidden; background: #ffffff; flex: 0 0 auto; }

.f-product-img img { width: 100%; height: auto; display: block; object-fit: cover; }

.f-product-card:hover .f-product-img img { width: 100%; height: auto; display: block; object-fit: cover; }

.f-product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-primary);
    color: var(--color-accent);
    padding: 6px 16px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-left: 3px solid var(--color-accent);
}

.f-product-body {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.f-product-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.f-product-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.f-product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-200);
}

.fps-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.fps-label {
    font-size: 12px;
    color: var(--color-gray-500);
}

.fps-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-800);
}

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

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

/* F Series Highlights */
.f-series-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.highlight-item {
    background: white;
    padding: var(--space-lg);
    border-left: 3px solid var(--color-accent);
    text-align: left;
}

.highlight-icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.highlight-icon svg {
    width: 100%;
    height: 100%;
}

.highlight-item h4 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.highlight-item p {
    font-size: 13px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

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

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

/* BW Series */
.bw-series-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.bw-product-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.bw-product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(10, 37, 64, 0.12);
    border-color: var(--color-accent);
}

.bw-card-img {
    height: 180px;
    overflow: hidden;
    background: #ffffff;
}

.bw-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.bw-product-card:hover .bw-card-img img {
    transform: scale(1.06);
}

.bw-card-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--space-lg);
}

.bw-model {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.03em;
    line-height: 1;
    display: block;
    margin-bottom: 6px;
}

.bw-type {
    font-size: 12px;
    color: var(--color-gray-400);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.bw-card-body {
    padding: var(--space-lg);
    flex: 1;
}

.bw-spec-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed var(--color-gray-200);
    font-size: 13px;
}

.bw-spec-row:last-child {
    border-bottom: none;
}

.bw-spec-label {
    color: var(--color-gray-500);
}

.bw-spec-value {
    color: var(--color-gray-800);
    font-weight: 500;
}

.bw-card-footer {
    padding: var(--space-md) var(--space-lg);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

.bw-card-footer p {
    font-size: 13px;
    color: var(--color-gray-600);
    line-height: 1.5;
}

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

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

/* ============ Support Page ============ */
.principle-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.principle-image {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.principle-image img {
    width: 100%;
    height: auto;
    display: block;
}

.principle-image-label {
    position: absolute;
    bottom: var(--space-lg);
    left: var(--space-lg);
    background: rgba(10, 37, 64, 0.9);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    border-left: 3px solid var(--color-accent);
    display: flex;
    flex-direction: column;
}

.principle-image-label span:first-child {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.03em;
}

.principle-image-label span:last-child {
    font-size: 12px;
    color: var(--color-gray-400);
    margin-top: 2px;
}

.principle-text h3 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    letter-spacing: 0.02em;
}

.principle-text > p {
    font-size: 16px;
    color: var(--color-gray-600);
    line-height: 1.9;
    margin-bottom: var(--space-md);
}

.principle-step-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.principle-step-inline {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.step-num-circle {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    color: var(--color-primary-dark);
    font-size: 16px;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.principle-step-inline h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.principle-step-inline p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.6;
}

@media (max-width: 992px) {
    .principle-section {
        grid-template-columns: 1fr;
    }
}

.principle-visual {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
    padding: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    display: flex;
    justify-content: center;
}

.diagram-svg {
    max-width: 600px;
    width: 100%;
    height: auto;
}

.principle-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.principle-step-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl);
    position: relative;
    transition: all var(--transition-base);
}

.principle-step-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 37, 64, 0.08);
}

.step-num {
    font-size: 48px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-md);
    opacity: 0.7;
}

.principle-step-card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.principle-step-card p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

.principle-step-extra {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-color: var(--color-primary);
}

.principle-step-extra .step-num,
.principle-step-extra h3,
.principle-step-extra p {
    color: var(--color-white);
}

.principle-step-extra p {
    color: var(--color-gray-300);
}

@media (max-width: 992px) {
    .principle-steps {
        grid-template-columns: 1fr;
    }
}

/* Structure */
.structure-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.structure-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
}

.structure-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(10, 37, 64, 0.1);
    border-color: var(--color-accent);
}

.structure-card-img {
    height: 200px;
    overflow: hidden;
    background: #ffffff;
}

.structure-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.structure-card:hover .structure-card-img img {
    transform: scale(1.06);
}

.structure-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: var(--space-xl);
}

.structure-num {
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-sm);
    opacity: 0.8;
}

.structure-header h3 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.structure-desc {
    font-size: 14px;
    color: var(--color-gray-400);
}

.structure-components {
    padding: var(--space-lg) var(--space-xl);
}

.structure-components li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--color-gray-200);
    font-size: 14px;
    color: var(--color-gray-700);
}

.structure-components li:last-child {
    border-bottom: none;
}

.comp-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

@media (max-width: 992px) {
    .structure-grid {
        grid-template-columns: 1fr;
    }
}

/* Documents */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.doc-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: white;
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.doc-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(10, 37, 64, 0.08);
}

.doc-icon {
    position: relative;
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.doc-icon svg {
    width: 100%;
    height: 100%;
}

.doc-type {
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.doc-info {
    flex: 1;
    min-width: 0;
}

.doc-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-800);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.doc-size {
    font-size: 12px;
    color: var(--color-gray-500);
}

.doc-download-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(212, 162, 76, 0.1);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

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

.docs-cta {
    margin-top: var(--space-2xl);
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-gray-50);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.docs-cta p {
    font-size: 15px;
    color: var(--color-gray-700);
}

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

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

/* ============ Applications Page ============ */
.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.app-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 48px rgba(10, 37, 64, 0.12);
    border-color: var(--color-accent);
}

.app-card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.app-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.app-card:hover .app-card-img img {
    transform: scale(1.08);
}

.app-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 30%, rgba(10, 37, 64, 0.7) 100%);
}

.app-card-num {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-lg);
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
    opacity: 0.9;
}

.app-card-body {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-card-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.app-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.app-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-200);
}

.app-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-gray-700);
}

.app-features svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

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

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

/* Industries */
.industries-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-lg);
}

.industry-item {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    background: white;
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.industry-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(10, 37, 64, 0.08);
}

.industry-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent);
}

.industry-icon svg {
    width: 100%;
    height: 100%;
}

.industry-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.industry-item p {
    font-size: 12px;
    color: var(--color-gray-500);
}

@media (max-width: 992px) {
    .industries-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .industries-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============ News Page ============ */
.news-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.news-tab {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-600);
    background: white;
    border: 1px solid var(--color-gray-300);
    transition: all var(--transition-fast);
}

.news-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.news-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(10, 37, 64, 0.12);
    border-color: var(--color-accent);
}

.news-card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-card-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

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

.news-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-accent);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
}

.news-card-body {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    margin-bottom: var(--space-sm);
}

.news-date {
    font-size: 13px;
    color: var(--color-gray-500);
}

.news-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.5;
}

.news-desc {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--space-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-accent);
    transition: gap var(--transition-fast);
}

.news-more:hover {
    gap: 10px;
    color: var(--color-accent-dark);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.page-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
    background: white;
    border: 1px solid var(--color-gray-300);
    transition: all var(--transition-fast);
}

.page-btn:hover:not(.disabled):not(.active) {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-dots {
    color: var(--color-gray-400);
    padding: 0 4px;
}

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

@media (max-width: 576px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-tabs {
        gap: 8px;
    }
    
    .news-tab {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* ============ Contact Page ============ */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.contact-info-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-info-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
    box-shadow: 0 16px 40px rgba(10, 37, 64, 0.1);
}

.cic-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent);
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px;
}

.cic-icon svg {
    width: 100%;
    height: 100%;
}

.cic-title {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--color-gray-500);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.cic-content {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.cic-sub {
    font-size: 13px;
    color: var(--color-gray-500);
}

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

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

/* Contact Form Section */
.contact-form-section {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-form-wrapper {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-2xl);
}

.form-success {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: var(--space-md) var(--space-lg);
    background: rgba(46, 125, 91, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

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

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    font-size: 14px;
    font-family: inherit;
    color: var(--color-gray-800);
    background: white;
    border: 1px solid var(--color-gray-300);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 162, 76, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.contact-map-wrapper {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.contact-map {
    height: 350px;
    background: #ffffff;
    overflow: hidden;
}

.map-svg {
    width: 100%;
    height: 100%;
}

.map-info {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
}

.map-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.map-info p {
    font-size: 14px;
    color: var(--color-gray-600);
    margin-bottom: var(--space-sm);
}

.map-info-row {
    display: flex;
    gap: var(--space-lg);
    font-size: 13px;
    color: var(--color-gray-500);
}

@media (max-width: 992px) {
    .contact-form-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .contact-form-wrapper {
        padding: var(--space-xl);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============ Parts Page ============ */
.parts-advantage {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: var(--space-xl) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.parts-advantage-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.pa-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-white);
}

.pa-num {
    font-size: 36px;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    opacity: 0.8;
    flex-shrink: 0;
}

.pa-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.pa-item p {
    font-size: 13px;
    color: var(--color-gray-400);
    line-height: 1.5;
}

@media (max-width: 992px) {
    .parts-advantage-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }
}

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

.parts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.part-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.part-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 48px rgba(10, 37, 64, 0.12);
    border-color: var(--color-accent);
}

.part-card-img {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: #ffffff;
}

.part-card-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.part-card:hover .part-card-img {
    transform: scale(1.06);
}

.part-tag {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: rgba(10, 37, 64, 0.85);
    color: var(--color-accent);
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.part-card-body {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.part-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.part-model {
    font-size: 13px;
    color: var(--color-accent-dark);
    font-weight: 500;
    margin-bottom: 4px;
}

.part-spec {
    font-size: 13px;
    color: var(--color-gray-500);
    margin-bottom: var(--space-sm);
    font-family: var(--font-display);
    letter-spacing: 0.03em;
}

.part-desc {
    font-size: 13px;
    color: var(--color-gray-600);
    line-height: 1.6;
    flex: 1;
}

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

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

/* ========== Language Switcher ========== */
.lang-switcher {
    position: relative;
    margin-right: 16px;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: var(--color-white);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: inherit;
}

.lang-toggle:hover {
    background: rgba(212, 162, 76, 0.2);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.scrolled .lang-toggle {
    background: rgba(10, 37, 64, 0.06);
    border-color: rgba(10, 37, 64, 0.15);
    color: var(--color-primary-dark);
}

.scrolled .lang-toggle:hover {
    background: rgba(212, 162, 76, 0.12);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.lang-current {
    font-weight: 600;
    min-width: 22px;
    text-align: center;
    font-family: var(--font-display);
    letter-spacing: 0.5px;
}

.lang-chevron {
    transition: transform 0.25s ease;
    opacity: 0.7;
}

.lang-toggle.open .lang-chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 160px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(10, 37, 64, 0.16);
    z-index: 1000;
    animation: fadeDown 0.2s ease;
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: none;
    border: none;
    border-radius: 6px;
    color: var(--color-gray-700);
    font-size: 14px;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: all 0.15s ease;
}

.lang-option:hover {
    background: var(--color-gray-50);
    color: var(--color-primary-dark);
}

.lang-option.active {
    background: rgba(212, 162, 76, 0.1);
    color: var(--color-accent);
    font-weight: 500;
}

.lang-opt-label {
    font-family: var(--font-display);
    font-weight: 600;
    min-width: 32px;
    letter-spacing: 0.5px;
}

.lang-opt-full {
    flex: 1;
    font-size: 13px;
}

.lang-opt-check {
    color: var(--color-accent);
}

/* ============================================================
   补充样式：修复页面实际使用但此前缺失定义的类
   （页脚 / 联系页 / 技术支持页 / 配件页 / 新闻页 / 按钮 / 图标统一）
   ============================================================ */

/* ----- 页脚 Footer ----- */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-gray-400);
}

.footer-main {
    padding: var(--space-3xl) 0 var(--space-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: var(--space-lg);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-gray-400);
    margin-bottom: var(--space-xl);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.fc-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--color-gray-400);
}

.fc-item svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.footer-title {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-white);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--color-accent);
}

.footer-nl-desc {
    font-size: 14px;
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.footer-nl-form {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.footer-nl-form input {
    flex: 1;
    min-width: 0;
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: var(--color-white);
    outline: none;
    transition: border-color var(--transition-fast);
}

.footer-nl-form input::placeholder {
    color: var(--color-gray-500);
}

.footer-nl-form input:focus {
    border-color: var(--color-accent);
}

.footer-social {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 14px;
    color: var(--color-gray-400);
}

.social-icons {
    display: flex;
    gap: var(--space-sm);
}

.social-icons a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.social-icons a:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(212, 162, 76, 0.12);
}

/* ----- 联系页 Contact ----- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.cii-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-accent);
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.cii-icon svg {
    width: 100%;
    height: 100%;
}

.cii-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 4px;
}

.cii-label {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-gray-500);
}

.cii-value {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1.5;
}

.contact-company-info {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
}

.contact-company-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.contact-company-info p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.8;
}

.contact-form-panel {
    background: var(--color-primary);
    padding: var(--space-2xl);
    position: relative;
}

.contact-form-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-accent);
}

.form-header h2 {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.form-header p {
    font-size: 14px;
    line-height: 1.7;
}

.contact-form-panel .form-group label {
    color: var(--color-gray-300);
}

.contact-form-panel .form-success {
    background: rgba(46, 125, 91, 0.25);
    border-color: rgba(120, 200, 160, 0.6);
    color: #9ED8BC;
}

@media (max-width: 992px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .contact-form-panel {
        padding: var(--space-xl);
    }
}

/* ----- 按钮补充 ----- */
.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

.btn-accent:hover {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 162, 76, 0.3);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 12px;
}

/* ----- 技术支持页 Support ----- */
.support-tabs-section {
    background: white;
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-lg) 0;
}

.support-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.support-tab {
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    background: white;
    border: 1px solid var(--color-gray-300);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.support-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.support-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.principle-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.principle-desc p {
    font-size: 16px;
    color: var(--color-gray-600);
    line-height: 1.9;
    margin-bottom: var(--space-md);
}

.principle-desc p:last-child {
    margin-bottom: 0;
}

.principle-step {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.principle-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(10, 37, 64, 0.08);
    border-color: var(--color-accent);
}

.step-icon {
    width: 44px;
    height: 44px;
    margin: 0 auto var(--space-md);
    background: var(--color-accent);
    color: var(--color-primary-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
}

.principle-step h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.principle-step p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

.structure-content {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.structure-image {
    border-radius: 4px;
    overflow: hidden;
    position: sticky;
    top: 100px;
}

.structure-image img {
    width: 100%;
    display: block;
}

.structure-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.structure-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.si-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(212, 162, 76, 0.1);
    color: var(--color-accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.si-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.si-content p {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

.docs-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.doc-item {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg) var(--space-xl);
    background: white;
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.doc-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(10, 37, 64, 0.08);
}

.doc-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.doc-meta {
    display: flex;
    gap: 8px;
    font-size: 13px;
    color: var(--color-gray-500);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background: white;
    border: 1px solid var(--color-gray-200);
    transition: border-color var(--transition-fast);
}

.faq-item.open {
    border-color: var(--color-accent);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    background: none;
    border: none;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    text-align: left;
    cursor: pointer;
}

.faq-icon {
    color: var(--color-gray-400);
    flex-shrink: 0;
    transition: transform var(--transition-base), color var(--transition-fast);
}

.faq-item.open .faq-icon {
    transform: rotate(180deg);
    color: var(--color-accent);
}

.faq-answer {
    margin: 0 var(--space-xl) var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-100);
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.8;
}

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

    .structure-image {
        position: static;
    }
}

@media (max-width: 576px) {
    .doc-item {
        flex-wrap: wrap;
        padding: var(--space-md);
    }
}

/* ----- 配件页 Parts ----- */
.parts-filter-section,
.news-filter-section {
    background: white;
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-xl) 0;
}

.parts-categories,
.news-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.part-cat-btn,
.news-cat-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-600);
    background: white;
    border: 1px solid var(--color-gray-300);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.part-cat-btn:hover,
.news-cat-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.part-cat-btn.active,
.news-cat-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.part-cat-btn.active .part-cat-icon {
    color: var(--color-accent-light);
}

.part-cat-icon {
    width: 18px;
    height: 18px;
    display: flex;
    flex-shrink: 0;
}

.part-cat-icon svg {
    width: 100%;
    height: 100%;
}

.part-img {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: #ffffff;
}

.part-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
}

.part-card:hover .part-img {
    transform: none;
}

.part-body {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.warranty-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.warranty-card {
    background: white;
    border: 1px solid var(--color-gray-200);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.warranty-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(10, 37, 64, 0.08);
    border-color: var(--color-accent);
}

.warranty-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    padding: 14px;
    color: var(--color-accent);
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.warranty-icon svg {
    width: 100%;
    height: 100%;
}

.warranty-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.warranty-card p {
    font-size: 13px;
    color: var(--color-gray-600);
    line-height: 1.7;
}

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

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

/* ----- 新闻页 News ----- */
.news-img {
    position: relative;
    height: auto;
    overflow: hidden;
    background: #fff;
}

.news-img {
    width: 100%;
    height: auto;
    object-position: center top;
    ;
    ;
    transition: transform var(--transition-slow);
}

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

.news-cat-tag {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    background: var(--color-accent);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
}

.news-body {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-source {
    font-size: 13px;
    color: var(--color-gray-500);
}

.news-summary {
    font-size: 14px;
    color: var(--color-gray-600);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ----- 图标风格统一（圆形浅金底 + 金色线条） ----- */
.honor-icon {
    padding: 14px;
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
}

.industry-icon {
    padding: 12px;
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
}

.highlight-icon {
    width: 44px;
    height: 44px;
    padding: 10px;
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
}

.doc-icon {
    padding: 10px;
    background: rgba(212, 162, 76, 0.1);
    border-radius: 50%;
    color: var(--color-accent);
}

@media (max-width: 992px) {
    .principle-steps {
        grid-template-columns: 1fr;
    }
}

/* ====== Language Switcher Enhanced ====== */
.lang-current { min-width: 64px; font-size: 14px; letter-spacing: 0.5px; }
.lang-toggle { padding: 8px 14px; gap: 8px; }
.lang-dropdown { min-width: 184px; padding: 8px; box-shadow: 0 10px 36px rgba(10, 37, 64, 0.2); }
.lang-option { padding: 12px 16px; gap: 12px; font-size: 14px; }
.lang-opt-label { min-width: 36px; font-size: 15px; }
.lang-option.active { background: rgba(212, 162, 76, 0.16); border: 1px solid rgba(212, 162, 76, 0.4); font-weight: 600; }
.lang-option:hover { background: rgba(10, 37, 64, 0.08); color: var(--color-primary-dark); }
.lang-opt-full { font-size: 13px; color: var(--color-gray-600); }
.lang-option.active .lang-opt-full { color: var(--color-accent); }

/* ====== Back to top ====== */
.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 26px;
    width: 46px;
    height: 46px;
    border: none;
    border-radius: 50%;
    background: var(--color-primary, #12233f);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(10, 37, 64, 0.32);
    z-index: 900;
    opacity: 0;
    transform: translateY(12px);
    animation: bttIn .28s ease forwards;
    transition: background .2s ease, transform .2s ease;
}
.back-to-top:hover {
    background: var(--color-accent, #d4a24c);
    transform: translateY(-2px);
}
.back-to-top:focus-visible { outline: 2px solid var(--color-accent, #d4a24c); outline-offset: 3px; }
@keyframes bttIn { to { opacity: 1; transform: translateY(0); } }

/* ====== Error boundary ====== */
.site-error {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52vh;
    padding: 60px 20px;
    background: var(--color-gray-50, #f6f8fa);
}
.site-error-inner {
    max-width: 520px;
    text-align: center;
    background: #fff;
    border: 1px solid var(--color-gray-200, #e6eaf0);
    border-radius: 12px;
    padding: 34px 30px;
    box-shadow: 0 4px 18px rgba(10, 37, 64, 0.07);
}
.site-error-inner h2 { font-size: 20px; color: var(--color-primary, #12233f); margin-bottom: 10px; }
.site-error-inner p { font-size: 14px; line-height: 1.75; color: var(--color-gray-600, #6b7686); margin-bottom: 22px; }

/* ====== Sitemap modal ====== */
.sitemap-overlay {
    position: fixed;
    inset: 0;
    background: rgba(8, 14, 26, 0.6);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: smFade .18s ease;
}
@keyframes smFade { from { opacity: 0 } to { opacity: 1 } }
.sitemap-modal {
    background: #fff;
    border-radius: 12px;
    max-width: 560px;
    width: 100%;
    max-height: 80vh;
    overflow: auto;
    position: relative;
    padding: 26px 28px 20px;
    box-shadow: 0 20px 56px rgba(0, 0, 0, 0.3);
    animation: smUp .2s ease;
}
@keyframes smUp { from { transform: translateY(12px); opacity: .5 } to { transform: none; opacity: 1 } }
.sitemap-modal h3 { font-size: 19px; color: var(--color-primary, #12233f); margin-bottom: 16px; }
.sitemap-close {
    position: absolute;
    top: 12px;
    right: 14px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: var(--color-gray-100, #f1f4f8);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    color: var(--color-gray-600, #5a6577);
}
.sitemap-close:hover { background: var(--color-gray-200, #e2e8f0); }
.sitemap-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 18px; }
.sitemap-list li a {
    display: block;
    padding: 9px 10px;
    font-size: 14px;
    color: var(--color-gray-700, #3b485c);
    text-decoration: none;
    border-radius: 6px;
    transition: background .15s ease, color .15s ease;
}
.sitemap-list li a:hover { background: var(--color-gray-50, #f6f8fa); color: var(--color-primary, #12233f); }
.sitemap-note { margin-top: 16px; font-size: 12.5px; color: var(--color-gray-500, #98a2b3); line-height: 1.7; }

/* ====== Newsletter feedback ====== */
.nl-msg { margin-top: 10px; font-size: 12.5px; line-height: 1.6; }
.nl-msg.ok { color: #4caf7d; }
.nl-msg.err { color: #e0736a; }
.footer-nl-form input.is-invalid { border-color: #e0736a; }

/* ====== Form inline validation ====== */
.form-group .field-error {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    color: #d9605a;
}
.form-group input.is-invalid,
.form-group textarea.is-invalid,
.form-group select.is-invalid {
    border-color: #e0a5a0;
    background: #fffafa;
}
.form-error-banner {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 8px;
    background: #fdf1f0;
    border: 1px solid #f0cdc9;
    color: #a8423c;
    font-size: 13.5px;
    line-height: 1.6;
}
.form-submitting { opacity: .65; pointer-events: none; }

/* ====== Lazy image fade-in ====== */
img[loading="lazy"] { background-color: var(--color-gray-100, #f1f4f8); }

/* ====== Clickable card affordance ====== */
.spec-clickable:focus-visible { outline: 3px solid var(--color-accent, #d4a24c); outline-offset: -3px; }
.spec-clickable { transition: box-shadow .2s ease; }
.spec-clickable:hover { box-shadow: inset 0 0 0 2px rgba(212, 162, 76, 0.55); }

@media (max-width: 640px) {
    .back-to-top { right: 14px; bottom: 18px; width: 42px; height: 42px; }
    .sitemap-list { grid-template-columns: 1fr; }
    .sitemap-modal { padding: 22px 18px 18px; }
}
.spec-zoom { position: absolute; right: 16px; bottom: 16px; width: 40px; height: 40px; border-radius: 50%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; color: #fff; cursor: pointer; z-index: 2; }
.spec-zoom { display: none !important; }
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px} .spec-grid-item{background:#f8fafc;border:1px solid #e8edf3;border-radius:6px;padding:8px 12px} .spec-grid-label{font-size:12px;color:#8a94a5;margin-bottom:4px} .spec-grid-value{font-size:14px;color:#1f2a3d;font-weight:500}

/* 美化弹窗 */
.spec-modal{border-radius:16px !important;box-shadow:0 20px 60px rgba(0,0,0,0.15) !important}
.spec-grid{gap:12px !important;margin-bottom:16px !important}
.spec-grid-item{background:#f8fafc !important;border:1px solid #e8edf3 !important;border-radius:8px !important;padding:10px 14px !important;transition:all 0.2s}
.spec-grid-item:hover{background:#f0f5ff !important;border-color:#c7d9f5 !important}
.spec-grid-label{font-size:12px !important;color:#8a94a5 !important;margin-bottom:4px !important}
.spec-grid-value{font-size:14px !important;color:#1f2a3d !important;font-weight:600 !important}
.spec-matrix{margin-bottom:16px !important;border-radius:8px !important;overflow:hidden}
.spec-matrix-table{border-radius:8px !important;overflow:hidden}
.spec-matrix-table thead th{background:#f0f5ff !important;color:#33404f !important;font-weight:600 !important}
.spec-matrix-table tbody tr:hover{background:#f8faff !important}
.spec-matrix-table .m-spm{background:#e8f0fe !important;color:#1a56a0 !important;font-weight:700 !important}
.spec-foot{border-top:1px solid #edf1f6 !important;padding-top:12px !important;margin-top:8px !important}
.spec-hint{font-size:12.5px !important;color:#98a2b3 !important}

/* 继续美化 */
.spec-modal{max-width:900px !important;padding:24px !important}
.spec-head{margin-bottom:16px !important}
.spec-title{font-size:24px !important;font-weight:700 !important;color:#1a1a2e !important}
.spec-desc{font-size:14px !important;color:#6b7280 !important;margin-bottom:16px !important}
.spec-grid{margin-bottom:20px !important}
.spec-grid-item{padding:12px 16px !important}
.spec-grid-label{font-size:12px !important;color:#9ca3af !important;margin-bottom:6px !important;font-weight:500 !important}
.spec-grid-value{font-size:15px !important;color:#111827 !important;font-weight:600 !important}
.spec-matrix{margin-bottom:20px !important}
.spec-matrix-table th{padding:10px 8px !important;font-size:13px !important}
.spec-matrix-table td{padding:10px 8px !important;font-size:13px !important}
.spec-matrix-table .m-spm{font-size:14px !important;font-weight:700 !important}
.spec-close{width:36px !important;height:36px !important;border-radius:50% !important;background:#f3f4f6 !important;border:none !important;cursor:pointer !important;font-size:18px !important;color:#6b7280 !important;transition:all 0.2s}
.spec-close:hover{background:#e5e7eb !important;color:#111827 !important}

/* 横向表格样式 */
.spec-table-new{width:100%;border-collapse:collapse;margin-bottom:20px;font-size:13px}
.spec-table-new th{background:#f8fafc;border:1px solid #e5e7eb;padding:10px 12px;text-align:left;font-weight:600;color:#374151;width:14%}
.spec-table-new td{border:1px solid #e5e7eb;padding:10px 12px;color:#1f2937;font-weight:500}

/* 参考图表格样式 */
.spec-table-ref{width:100%;border-collapse:collapse;margin-bottom:20px;font-size:13px}
.spec-table-ref th{background:#f8fafc;border:1px solid #d1d5db;padding:10px 8px;text-align:center;font-weight:600;color:#374151}
.spec-table-ref td{border:1px solid #d1d5db;padding:10px 8px;text-align:center;color:#1f2937;font-weight:500}

/* 紧凑布局 */
.spec-modal{padding:16px !important;max-width:95% !important;max-height:90vh !important;overflow:hidden !important}
.spec-head{margin-bottom:10px !important}
.spec-head img{max-height:120px !important}
.spec-title{font-size:20px !important;margin-bottom:4px !important}
.spec-desc{font-size:13px !important;margin-bottom:10px !important}
.spec-table-ref{margin-bottom:12px !important;font-size:12px !important}
.spec-table-ref th{padding:6px 6px !important}
.spec-table-ref td{padding:6px 6px !important}
.spec-matrix{margin-bottom:10px !important}
.spec-matrix-table{font-size:11px !important}
.spec-matrix-table th{padding:5px 4px !important}
.spec-matrix-table td{padding:5px 4px !important}
.spec-matrix-table .m-spm{font-size:12px !important}
.spec-foot{padding-top:8px !important;margin-top:6px !important}
.spec-hint{font-size:11px !important}

/* 语言栏优化 - 更明显，不重叠 */
.lang-switcher {
  margin-right: 20px !important;
  z-index: 1000 !important;
}

.lang-toggle {
  background: rgba(255, 255, 255, 0.25) !important;
  border: 2px solid rgba(255, 255, 255, 0.4) !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  padding: 8px 16px !important;
  border-radius: 8px !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15) !important;
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.35) !important;
  border-color: #d4a84b !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25) !important;
}

.scrolled .lang-toggle {
  background: rgba(255, 255, 255, 0.9) !important;
  border: 2px solid #e5e7eb !important;
  color: #1e3a5f !important;
}

.lang-dropdown {
  margin-top: 8px !important;
  border-radius: 8px !important;
  overflow: hidden !important;
}

.lang-option {
  padding: 10px 16px !important;
  font-size: 14px !important;
}

.lang-option:hover {
  background: #f3f4f6 !important;
}

/* 语言切换按钮样式 */
.lang-switcher {
  display: flex !important;
  gap: 8px !important;
  align-items: center !important;
}

.lang-btn {
  padding: 6px 14px !important;
  border: 2px solid rgba(255,255,255,0.3) !important;
  border-radius: 6px !important;
  background: transparent !important;
  color: #fff !important;
  font-size: 14px !important;
  cursor: pointer !important;
  transition: all 0.3s !important;
}

.lang-btn:hover {
  background: rgba(255,255,255,0.2) !important;
  border-color: #fff !important;
}

.lang-btn.active {
  background: #fff !important;
  color: #1e3a5f !important;
  border-color: #fff !important;
  font-weight: 600 !important;
}

.scrolled .lang-btn {
  color: #1e3a5f !important;
  border-color: rgba(30,58,95,0.3) !important;
}

.scrolled .lang-btn:hover {
  background: rgba(30,58,95,0.1) !important;
  border-color: #1e3a5f !important;
}

.scrolled .lang-btn.active {
  background: #1e3a5f !important;
  color: #fff !important;
  border-color: #1e3a5f !important;
}


/* 语言切换按钮 - 精致版 */
.lang-switcher {
  display: flex !important;
  gap: 2px !important;
  align-items: center !important;
  padding: 3px !important;
  background: rgba(255,255,255,0.12) !important;
  border-radius: 24px !important;
  border: 1px solid rgba(255,255,255,0.2) !important;
  backdrop-filter: blur(12px) !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1) !important;
}

.lang-btn {
  padding: 7px 18px !important;
  border: none !important;
  border-radius: 20px !important;
  background: transparent !important;
  color: rgba(255,255,255,0.75) !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  letter-spacing: 0.3px !important;
}

.lang-btn:hover {
  color: #fff !important;
  background: rgba(255,255,255,0.1) !important;
}

.lang-btn.active {
  background: #fff !important;
  color: #1e3a5f !important;
  font-weight: 600 !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}

.scrolled .lang-switcher {
  background: rgba(255,255,255,0.9) !important;
  border: 1px solid rgba(30,58,95,0.1) !important;
  box-shadow: 0 2px 12px rgba(30,58,95,0.08) !important;
}

.scrolled .lang-btn {
  color: rgba(30,58,95,0.65) !important;
}

.scrolled .lang-btn:hover {
  color: #1e3a5f !important;
  background: rgba(30,58,95,0.06) !important;
}

.scrolled .lang-btn.active {
  background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%) !important;
  color: #fff !important;
  box-shadow: 0 3px 10px rgba(30,58,95,0.3) !important;
}


/* 语言切换按钮 - 简洁精致版 */
.lang-switcher {
  display: flex !important;
  gap: 0 !important;
  align-items: center !important;
  background: transparent !important;
  border: none !important;
  backdrop-filter: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.lang-btn {
  padding: 6px 14px !important;
  border: none !important;
  border-radius: 4px !important;
  background: transparent !important;
  color: rgba(255,255,255,0.7) !important;
  font-size: 14px !important;
  font-weight: 400 !important;
  cursor: pointer !important;
  transition: all 0.2s ease !important;
  letter-spacing: 0 !important;
  position: relative !important;
}

.lang-btn:hover {
  color: #fff !important;
  background: rgba(255,255,255,0.1) !important;
}

.lang-btn.active {
  background: rgba(255,255,255,0.15) !important;
  color: #fff !important;
  font-weight: 500 !important;
  box-shadow: none !important;
}

.lang-btn.active::after {
  content: '' !important;
  position: absolute !important;
  bottom: -2px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  width: 20px !important;
  height: 2px !important;
  background: #fff !important;
  border-radius: 1px !important;
}

.scrolled .lang-switcher {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.scrolled .lang-btn {
  color: rgba(30,58,95,0.6) !important;
}

.scrolled .lang-btn:hover {
  color: #1e3a5f !important;
  background: rgba(30,58,95,0.05) !important;
}

.scrolled .lang-btn.active {
  background: rgba(30,58,95,0.08) !important;
  color: #1e3a5f !important;
}

.scrolled .lang-btn.active::after {
  background: #1e3a5f !important;
}


/* 语言切换按钮 - 参考图样式 */
.lang-switcher {
  display: flex !important;
  gap: 0 !important;
  align-items: center !important;
  padding: 4px !important;
  background: rgba(255,255,255,0.1) !important;
  border-radius: 50px !important;
  border: none !important;
  backdrop-filter: blur(10px) !important;
  box-shadow: none !important;
}

.lang-btn {
  padding: 8px 20px !important;
  border: none !important;
  border-radius: 50px !important;
  background: transparent !important;
  color: rgba(255,255,255,0.85) !important;
  font-size: 14px !important;
  font-weight: 400 !important;
  cursor: pointer !important;
  transition: all 0.25s ease !important;
  letter-spacing: 0 !important;
}

.lang-btn:hover {
  color: #fff !important;
  background: rgba(255,255,255,0.08) !important;
}

.lang-btn.active {
  background: #fff !important;
  color: #1e3a5f !important;
  font-weight: 500 !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}

.lang-btn.active::after {
  display: none !important;
}

.scrolled .lang-switcher {
  background: rgba(255,255,255,0.1) !important;
  border: none !important;
  box-shadow: none !important;
}

.scrolled .lang-btn {
  color: rgba(255,255,255,0.85) !important;
}

.scrolled .lang-btn:hover {
  color: #fff !important;
  background: rgba(255,255,255,0.08) !important;
}

.scrolled .lang-btn.active {
  background: #fff !important;
  color: #1e3a5f !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}


/* 导航栏文字不换行 */
.header nav a,
.header ul li a,
nav ul li a {
  white-space: nowrap !important;
  font-size: 15px !important;
  padding: 8px 12px !important;
  line-height: 1.2 !important;
}

.header nav li,
.header ul li,
nav ul li {
  white-space: nowrap !important;
}


/* 语言切换按钮 - 精致胶囊版 */
.lang-switcher {
  display: flex !important;
  gap: 0 !important;
  align-items: center !important;
  padding: 4px !important;
  background: rgba(255,255,255,0.12) !important;
  border-radius: 30px !important;
  border: 1px solid rgba(255,255,255,0.15) !important;
  backdrop-filter: blur(10px) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08) !important;
}

.lang-btn {
  padding: 8px 18px !important;
  border: none !important;
  border-radius: 26px !important;
  background: transparent !important;
  color: rgba(255,255,255,0.8) !important;
  font-size: 14px !important;
  font-weight: 400 !important;
  cursor: pointer !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  letter-spacing: 0.2px !important;
}

.lang-btn:hover {
  color: #fff !important;
  background: rgba(255,255,255,0.1) !important;
}

.lang-btn.active {
  background: #fff !important;
  color: #1e3a5f !important;
  font-weight: 500 !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12) !important;
}

.scrolled .lang-switcher {
  background: rgba(255,255,255,0.95) !important;
  border: 1px solid rgba(30,58,95,0.08) !important;
  box-shadow: 0 2px 12px rgba(30,58,95,0.06) !important;
}

.scrolled .lang-btn {
  color: rgba(30,58,95,0.65) !important;
}

.scrolled .lang-btn:hover {
  color: #1e3a5f !important;
  background: rgba(30,58,95,0.05) !important;
}

.scrolled .lang-btn.active {
  background: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%) !important;
  color: #fff !important;
  box-shadow: 0 3px 10px rgba(30,58,95,0.25) !important;
}


/* 语言栏尺寸调整 */
.lang-btn {
  padding: 7px 14px !important;
  font-size: 13px !important;
}

.lang-switcher {
  padding: 3px !important;
  border-radius: 28px !important;
}

.lang-btn.active {
  border-radius: 25px !important;
}


/* 语言栏进一步缩小 */
.lang-btn {
  padding: 6px 12px !important;
  font-size: 12px !important;
}

.lang-switcher {
  padding: 2px !important;
  border-radius: 26px !important;
}

.lang-btn.active {
  border-radius: 24px !important;
}

/* CSS updated */
/* 配件/产品卡片统一高度+完整显示+底色匹配 (2026-10-01) */
.parts-grid, .products-grid { align-items: stretch; }
.part-img { height: 220px; background-color: #ffffff; }
.part-img::before { content: none; }
.part-img img { position: relative; z-index: 1; height: 100%; object-fit: contain; object-position: center; background-color: transparent; }
.product-card-img { height: 260px; background-color: #ffffff; }
.product-card-img::before { content: none; }
.product-card-img img { position: relative; z-index: 1; height: 100%; object-fit: contain; object-position: center; background-color: transparent; }
.f-series-cards { align-items: stretch; }
.f-product-img { height: 260px; }
.f-product-img img { height: 100%; object-fit: contain; background-color: transparent; }
/* 图片在卡片内水平垂直居中 (2026-10-01) */
.part-img img, .product-card-img img { width: 100%; }
.f-product-img img { width: 100%; }

/* ===== 关于我们：工厂实力 + 全球交付 (2026-10-02) ===== */
.factory-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.factory-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--color-gray-100);
}

.factory-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.factory-card:hover img {
    transform: scale(1.06);
}

.factory-card-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--space-xl) var(--space-md) var(--space-md);
    background: linear-gradient(to top, rgba(6, 23, 42, 0.85), transparent);
    color: var(--color-white);
    font-size: 14px;
    letter-spacing: 0.05em;
    transform: translateY(4px);
    opacity: 0.92;
    transition: all var(--transition-base);
}

.factory-card:hover .factory-card-caption {
    opacity: 1;
    transform: translateY(0);
}

.delivery-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--space-3xl) 0;
    color: var(--color-white);
}

.delivery-section .section-title {
    color: var(--color-white);
}

.delivery-section .section-subtitle {
    color: var(--color-gray-300);
}

.delivery-section .stat-value small {
    font-size: 22px;
    font-weight: 500;
    margin-left: 2px;
}

.delivery-section .stat-label {
    color: var(--color-gray-300);
}

.delivery-desc {
    text-align: center;
    max-width: 760px;
    margin: var(--space-2xl) auto 0;
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-gray-300);
}

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

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

    .factory-card {
        aspect-ratio: 16 / 10;
    }
}

/* 全球交付：发货实拍图 (2026-10-02) */
.delivery-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.delivery-gallery-item {
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.delivery-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.delivery-gallery-item:hover img {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .delivery-gallery {
        grid-template-columns: 1fr;
    }
}

/* 图片点击放大灯箱 (2026-10-02) */
.factory-card img,
.delivery-gallery-item img {
    cursor: pointer;
}

/* 图片详情页 photo.html (2026-10-02) */
.photo-section {
    min-height: 60vh;
}

.photo-breadcrumb {
    font-size: 13px;
    color: var(--color-gray-500);
    margin-bottom: var(--space-lg);
}

.photo-breadcrumb a {
    color: var(--color-gray-500);
    text-decoration: none;
}

.photo-breadcrumb a:hover {
    color: var(--color-accent);
}

.photo-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
}

.photo-frame {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
    padding: var(--space-lg);
    text-align: center;
}

.photo-frame img {
    max-width: 100%;
    max-height: 75vh;
    object-fit: contain;
}

.photo-back {
    margin-top: var(--space-xl);
}