/* ==========================================================================
   MASC-ROBOTS 官方网站全站规范样式表 (Style Directory Index / TOC)
   --------------------------------------------------------------------------
   01. 基础设计系统与 CSS 变量 (Design System & CSS Variables)
   02. 基础重置与全局字体 (Base & Typography Reset)
   03. 全局页首 Header 与导航系统 (Main Header & Nav Dropdown)
   04. 首页 Hero 全响应式轮播图 (Hero Carousel & Responsive Viewport)
   05. Showcase 核心展示大屏 (Showcase Banner Sections)
   06. 全系产品矩阵与卡片 UI (Product Matrix & Spec Pills)
   07. 订购咨询与表单样式 (Order Form & Success Panel)
   08. 支持与服务 / 新闻模块 (Developer Support & News Module)
   09. 全局页脚 Footer 与版权栏 (Footer 4-Column Grid & Copyright Logo)
   10. 响应式布局媒体查询 (Responsive Media Queries)
   ========================================================================== */

/* ==========================================================================
   1. 设计系统 (CSS 变量 & 基础设置)
   ========================================================================== */
:root {
    /* 极简 Light Mode 色彩体系 - 黑白对调 */
    --color-primary: #0a5cff;       /* 高级科技蓝 */
    --color-primary-hover: #0047cc; /* 科技蓝悬停 */
    --color-dark: #f8f9fa;          /* 背景主浅灰色 */
    --color-dark-rgb: 248, 248, 250;
    --color-light: #f8f9fa;
    --color-white: #111112;         /* 纯白翻转为高级深黑文字 */
    --color-black: #ffffff;         /* 纯黑翻转为白背景 */
    --color-gray: #51525a;
    --color-success: #30d158;

    /* 物理绝对色彩定义 (用以少数需强对比保留的特例) */
    --color-absolute-white: #ffffff;
    --color-absolute-black: #000000;

    /* 浅色专属变量 */
    --color-bg-pure: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-bg-card: #ffffff;
    --color-text-primary: #111112;
    --color-text-secondary: #51525a;
    --color-text-muted: #8e8e93;
    --color-border: #e4e5eb;
    --color-shadow-light: 0 8px 30px rgba(0, 0, 0, 0.03);
    --max-width-site: 1160px;

    /* 字体体系 */
    --font-primary: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* 动画与过渡 */
    --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    font-family: var(--font-primary);
    scroll-behavior: smooth;
    background-color: var(--color-bg-pure);
    color: var(--color-text-primary);
}

body {
    overflow-x: hidden;
}

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

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

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

/* 科技感滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track { background: var(--color-bg-light); }
::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.35);
}

/* 文本选择颜色 */
::selection {
    background-color: var(--color-primary);
    color: var(--color-text-primary);
}

/* ==========================================================================
   2. 页面共用组件与动画
   ========================================================================== */

/* 按钮组件 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.btn svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn:hover svg {
    transform: translateX(4px);
}

.btn-primary {
    color: var(--color-absolute-white) !important;
    background-color: var(--color-text-primary);
    color: var(--color-black);
}

.btn-primary:hover {
    background-color: rgba(17, 17, 18, 0.9);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
    background-color: rgba(17, 17, 18, 0.1);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(17, 17, 18, 0.2);
    border-color: var(--color-text-muted);
}

/* 预设滚动渐入动画 (Scroll Reveal) */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-reveal.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

.hidden {
    display: none !important;
}

/* 容器定义 */
.sub-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 0 40px;
}

.max-w-800 {
    max-width: 800px;
}

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


/* ==========================================================================
   3. 顶部导航栏 (Header)
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), color 200ms ease, box-shadow 200ms ease, transform var(--transition-normal);
    border-bottom: 1px solid rgba(17, 17, 18, 0.06);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(130%);
    box-shadow: none;
}

/* 滚动后导航栏样式：初始透明 -> 滚动变为白色 */
.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(17, 17, 17, 0.08);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(18px) saturate(140%);
}

.site-header.scrolled .logo {
    color: var(--color-text-primary);
    background-color: transparent;
    padding: 6px 10px;
    border-radius: 12px;
    box-shadow: none;
}

.site-header.scrolled .logo-img {
    filter: none;
}

.site-header.scrolled .nav-link,
.site-header.scrolled .nav-link span,
.site-header.scrolled .nav-arrow,
.site-header.scrolled .lang-selector,
.site-header.scrolled .mobile-menu-toggle {
    color: var(--color-text-primary) !important;
    text-shadow: none;
}

.site-header.scrolled .btn-purchase {
    color: var(--color-text-primary) !important;
    background-color: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(17, 17, 18, 0.15);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.02);
}

.site-header:not(.scrolled) .nav-link,
.site-header:not(.scrolled) .nav-link span,
.site-header:not(.scrolled) .nav-arrow,
.site-header:not(.scrolled) .lang-selector,
.site-header:not(.scrolled) .mobile-menu-toggle {
    color: #000000 !important;
    text-shadow: none;
}

.site-header:not(.scrolled) .btn-purchase {
    color: var(--color-black) !important;
    background-color: var(--color-text-primary) !important;
    border: 1px solid transparent;
    box-shadow: 0 6px 20px rgba(17, 17, 18, 0.12);
}

.site-header.menu-open {
    background-color: var(--color-bg-light) !important;
    backdrop-filter: none !important;
}

.site-header.menu-open .nav-link,
.site-header.menu-open .nav-link span,
.site-header.menu-open .nav-arrow,
.site-header.menu-open .lang-selector {
    color: var(--color-text-primary) !important;
}

.site-header.menu-open .btn-purchase {
    color: var(--color-black) !important;
    background-color: var(--color-text-primary) !important;
}

.header-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 0 32px;
    height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.logo {
    display: flex;
    align-items: center;
    color: var(--color-absolute-white);
    z-index: 1001;
    gap: 0;
    padding: 0;
    border-radius: 0;
    background-color: transparent;
    transition: transform var(--transition-fast);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.logo:hover {
    transform: none;
    background-color: transparent;
}

.logo-img {
    width: auto;
    max-width: 360px;
    height: 64px;
    object-fit: contain;
    display: block;
    transition: transform var(--transition-fast);
}

/* 在滚动状态下，logo 看起来像被白底内嵌 */
.site-header.scrolled .logo {
    /* 保持与导航栏一致的透明背景，去除白底和阴影 */
    background-color: transparent;
    padding: 6px 10px;
    border-radius: 12px;
    box-shadow: none;
}

.site-header.scrolled .logo-img {
    filter: none;
    transform: scale(1);
}

/* 未滚动（透明 header）时，为透明 logo 添加柔和光晕以保证深色 logo 在暗背景上的可见性 */
.site-header:not(.scrolled) .logo-img {
    filter: contrast(1.05) saturate(1.04);
    /* 移除 image-rendering 以避免对 SVG 向量的像素化处理，保持矢量清晰度 */
}

.nav-menu {
    height: 100%;
}

.nav-list {
    display: flex;
    list-style: none;
    height: 100%;
}

.nav-item {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0 24px;
    font-size: 14px;
    font-weight: 500;
    color: #000000;
    height: 100%;
}

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

.site-header:not(.scrolled) .nav-link,
.site-header:not(.scrolled) .nav-link span,
.site-header:not(.scrolled) .nav-arrow,
.site-header:not(.scrolled) .lang-selector,
.site-header:not(.scrolled) .btn-purchase {
    color: #000000 !important;
}

.nav-arrow {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-arrow {
    transform: rotate(180deg);
}

/* 下拉菜单 (Dropdown) */
.dropdown-menu {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: rgba(var(--color-dark-rgb), 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
    z-index: 999;
}

.nav-item:hover .dropdown-menu {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 40px;
    display: flex;
    gap: 80px;
}

.dropdown-left {
    width: 260px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    padding-right: 40px;
}

.dropdown-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.dropdown-desc {
    font-size: 16px;
    color: var(--color-text-primary);
    line-height: 1.4;
    font-weight: 300;
}

.dropdown-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 40px;
}

.dropdown-item {
    display: block;
    padding: 12px;
    border-radius: 8px;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-bg-card);
}

.item-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text-primary);
}

.item-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.4;
}


/* 右侧快捷操作 */
.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-absolute-white);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.lang-selector:hover {
    color: var(--color-absolute-white);
}

.lang-icon {
    width: 15px;
    height: 15px;
}

.btn-purchase {
    color: var(--color-absolute-white) !important;
    background-color: var(--color-text-primary);
    color: var(--color-black);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.btn-purchase:hover {
    background-color: rgba(17, 17, 18, 0.9);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

.mobile-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-absolute-white);
    z-index: 1001;
}

.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 10px;
}


/* ==========================================================================
   4. 首屏巨幕轮播区 (Hero Section)
   ========================================================================== */
.hero-section {
    position: relative;
    width: 100vw;
    height: 60vh;
    min-height: 420px;
    background-color: var(--color-bg-pure);
    overflow: hidden;
}

.carousel-track-container {
    width: 100%;
    height: 100%;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    display: flex;
    align-items: center;
    padding: 0 10%;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 10;
}

/* 轮播内文字动画 */
.slide-content {
    max-width: 600px;
    z-index: 20;
}

.slide-subtitle {
    color: var(--color-primary);
    display: block;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.slide-title {
    color: var(--color-text-primary);
    font-size: 44px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 16px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.slide-desc {
    color: var(--color-text-secondary);
    font-size: 16px;
    font-weight: 300;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.slide-actions {
    display: flex;
    gap: 16px;
}

/* 首屏载入动画效果 */
.carousel-slide.active .fade-in-up {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* 轮播导航按钮 */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background-color: rgba(17, 17, 18, 0.08);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 30;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.carousel-nav:hover {
    background-color: rgba(17, 17, 18, 0.2);
    border-color: var(--color-text-muted);
}

.carousel-nav svg {
    width: 24px;
    height: 24px;
}

/* 轮播图左右控制按钮：精准置于图片内侧边缘 */
.btn-prev,
.carousel-nav.btn-prev {
    left: 28px !important;
}

.btn-next,
.carousel-nav.btn-next {
    right: 28px !important;
}

/* 轮播指示器条 (底部水平居中定位，保证 z-index: 999 浮在最上方，100% 响应点击) */
.carousel-indicators {
    position: absolute !important;
    bottom: 24px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    right: auto !important;
    top: auto !important;
    z-index: 999 !important;
    display: flex !important;
    justify-content: center !important;
    gap: 16px !important;
    padding: 0 !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-radius: 0 !important;
    border: none !important;
    box-shadow: none !important;
    pointer-events: auto !important;
}

@media (max-width: 768px) {
    .carousel-indicators {
        bottom: 16px !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        padding: 4px 10px !important;
        gap: 8px !important;
    }
}

.indicator-bar {
    width: 85px !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 4px !important;
    text-align: left !important;
    opacity: 0.55 !important;
    cursor: pointer !important;
    pointer-events: auto !important;
    z-index: 1000 !important;
    transition: opacity 0.3s ease !important;
}

.indicator-bar * {
    pointer-events: none !important;
}

.indicator-bar {
    transition: opacity 0.3s ease, transform 0.3s ease !important;
}

/* 轮到时的指示器变色与高光提升 */
.indicator-bar.active {
    opacity: 1 !important;
}

.indicator-bar.active .indicator-title {
    color: #0066CC !important;
    font-weight: 700 !important;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.95), 0 0 2px rgba(0, 102, 204, 0.4) !important;
}

.indicator-title {
    font-size: 12px !important;
    font-weight: 500 !important;
    color: #333336 !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    transition: color 0.3s ease, font-weight 0.3s ease !important;
}

.indicator-progress,
.indicator-line {
    position: relative;
    width: 100%;
    height: 3px !important;
    background-color: rgba(17, 17, 18, 0.2);
    border-radius: 2px !important;
    overflow: hidden;
}

.indicator-progress::after,
.line-progress {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #0066CC !important;
    box-shadow: 0 0 8px rgba(0, 102, 204, 0.6) !important;
    transform: scaleX(0);
    transform-origin: left;
}

/* 5秒无缝进度条Grow变色动画 */
.indicator-bar.active .indicator-progress::after,
.indicator-bar.active .line-progress {
    animation: growProgress 5s linear forwards !important;
}

@keyframes growProgress {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.indicator-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: 0.5px;
}


/* ==========================================================================
   5. COSA & TRON 1 产品大屏展示区 (Sections)
   ========================================================================== */
.section-cosa,
.section-tron1 {
    position: relative;
    width: 100vw;
    height: 80vh;
    min-height: 520px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    padding: 0 10%;
    margin-top: 16px;
}

.section-tron1 {
    justify-content: flex-end;
}

.cosa-container,
.tron1-container {
    width: 100%;
    max-width: var(--max-width-site);
    margin: 0 auto;
}

.cosa-content,
.tron1-content {
    max-width: 500px;
}

.section-title {
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.section-desc {
    font-size: 16px;
    font-weight: 300;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 36px;
}

.tron1-actions,
.cosa-actions {
    display: flex;
    gap: 16px;
}


/* ==========================================================================
   6. 核心科技双列网格卡片 (Grid Section)
   ========================================================================== */
.section-grid {
    padding: 16px 40px;
    background-color: var(--color-bg-pure);
}

.grid-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.tech-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 600px;
    background-color: var(--color-bg-light);
}

.card-image-wrapper {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-slow);
}

.tech-card:hover .card-image {
    transform: scale(1.04);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.7) 85%);
    display: flex;
    align-items: flex-end;
    padding: 60px;
}

.card-content {
    max-width: 440px;
}

.card-tag {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
}

.card-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.card-desc {
    font-size: 15px;
    font-weight: 300;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: 24px;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: 1.5px solid transparent;
    padding-bottom: 2px;
}

.card-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

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

.card-link:hover svg {
    transform: translateX(4px);
}


/* ==========================================================================
   7. 新闻中心与精选案例 (News & Cases Section)
   ========================================================================== */
.section-news {
    background-color: var(--color-bg-pure);
    padding: 100px 40px;
}

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

.news-header {
    margin-bottom: 60px;
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 80px;
}

.block-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 32px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* 新闻列表 */
.news-list {
    display: flex;
    flex-direction: column;
}

.news-item-link {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.news-item-link:last-child {
    border-bottom: none;
}

.news-date {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
}

.news-item-title {
    font-size: 18px;
    font-weight: 500;
    color: rgba(17, 17, 18, 0.85);
    line-height: 1.4;
    transition: all var(--transition-fast);
}

.news-item-link:hover .news-item-title {
    color: var(--color-primary);
    transform: translateX(4px);
}

/* 精选案例卡片 */
.case-cards {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.case-card {
    display: flex;
    gap: 24px;
    background-color: var(--color-bg-light);
    border-radius: 16px;
    overflow: hidden;
    transition: transform var(--transition-normal);
}

.case-card:hover {
    transform: translateY(-4px);
}

.case-img-wrap {
    width: 200px;
    height: 150px;
    overflow: hidden;
    flex-shrink: 0;
}

.case-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.case-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
}

.case-info h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.case-info p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-weight: 300;
}




/* ==========================================================================
   9. 响应式适配优化
   ========================================================================== */

.hero-section {
    height: clamp(62vh, 73vh, 88vh);
    min-height: 520px;
}

.slide-title {
    font-size: clamp(2.8rem, 5vw, 4.4rem);
}

.slide-desc {
    font-size: clamp(1rem, 1.1vw, 1.05rem);
}

.slide-actions {
    flex-wrap: wrap;
    gap: 14px;
}

.card-image-wrapper {
    min-height: 420px;
}

@media (max-width: 1024px) {
    .header-container {
        padding: 12px 24px;
        flex-wrap: wrap;
        height: auto;
    }

    .logo-img {
        max-width: 200px;
        height: 44px;
    }

    .header-right {
        gap: 14px;
    }

    .nav-menu {
        width: 100%;
        order: 3;
        display: none;
    }

    .mobile-menu-toggle {
        display: inline-flex;
    }

    .site-header.menu-open .nav-menu {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 12px;
        padding: 18px 0;
        background-color: rgba(255, 255, 255, 0.96);
        border-radius: 22px;
    }

    .nav-link {
        padding: 12px 0;
    }

    .carousel-indicators {
        left: 5%;
        gap: 16px;
    }

    .carousel-nav.btn-prev {
        left: 16px;
    }

    .carousel-nav.btn-next {
        right: 16px;
    }

    .section-cosa,
    .section-tron1,
    .section-news,
    .section-grid {
        padding-left: 20px;
        padding-right: 20px;
    }

    .section-cosa,
    .section-tron1 {
        padding: 0 20px;
        min-height: 480px;
        align-items: flex-end;
    }

    .grid-container {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .header-container {
        justify-content: space-between;
    }

    .mobile-menu-toggle {
        display: inline-flex;
    }

    .nav-list {
        width: 100%;
        gap: 10px;
        padding: 16px 18px;
    }

    .header-right {
        width: 100%;
        justify-content: flex-end;
    }

    .hero-section {
        height: auto;
        padding: 40px 0 60px;
    }

    .slide-content {
        max-width: 100%;
    }

    .slide-title {
        font-size: 2.75rem;
    }

    .slide-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .carousel-indicators {
        bottom: 16px;
        left: 5%;
        right: 5%;
        flex-wrap: wrap;
    }

    .section-grid {
        padding: 24px 20px;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .case-card {
        flex-direction: column;
    }

    .case-img-wrap {
        width: 100%;
        height: 220px;
    }
}

.modal-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.modal-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.5;
    font-weight: 300;
}

/* 表单排版 */
.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.form-group label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border); box-shadow: var(--color-shadow-light);
    border-radius: 12px;
    color: var(--color-text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(0, 102, 204, 0.2);
    background-color: var(--color-bg-card);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background-color: var(--color-bg-light);
}

.btn-submit {
    margin-top: 16px;
    width: 100%;
    height: 48px;
}

/* 提交成功遮罩 */
.modal-success-screen {
    position: absolute;
    inset: 0;
    background-color: var(--color-bg-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px;
    animation: fadeInModal 0.4s ease-out forwards;
}

@keyframes fadeInModal {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.success-icon {
    width: 64px;
    height: 64px;
    color: var(--color-success);
    margin-bottom: 24px;
}

.modal-success-screen h4 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.modal-success-screen p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    max-width: 320px;
}


/* ==========================================================================
   9. 二级页面专属公共样式 (Sub-pages Common Styles)
   ========================================================================== */
.section-page-header,
.section-sub-hero {
    position: relative;
    width: 100vw;
    height: 55vh;
    min-height: 420px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    padding-top: 72px; /* 避开 Header */
    background-color: var(--color-bg-pure);
}

.sub-hero-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
    z-index: 10;
}

.sub-hero-tag {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 16px;
}

.sub-hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.15;
    letter-spacing: -1px;
}

.sub-hero-desc {
    font-size: 18px;
    font-weight: 300;
    color: var(--color-text-secondary);
    line-height: 1.6;
}


/* ==========================================================================
   10. 关于我们 (about.html) 专属样式
   ========================================================================== */
.about-intro-section {
    padding: 100px 0;
    background-color: var(--color-bg-pure);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
}

.sub-section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.intro-paragraph {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-weight: 300;
}

.intro-stats {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-num {
    font-size: 40px;
    font-weight: 700;
    color: var(--color-primary);
    font-family: 'Outfit', sans-serif;
    min-width: 100px;
}

.stat-lbl {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* 技术实力部分 */
.about-tech-section {
    background-color: var(--color-bg-light);
    padding: 100px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.about-tech-header {
    text-align: center;
    margin-bottom: 60px;
}

.about-tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.tech-info-card {
    background-color: rgba(17, 17, 18, 0.02);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 40px;
    transition: transform var(--transition-normal);
}

.tech-info-card:hover {
    transform: translateY(-5px);
}

.tech-info-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.tech-info-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-weight: 300;
}

/* 时间轴 (Timeline) 样式 */
.about-timeline-section {
    padding: 100px 0;
    background-color: var(--color-bg-pure);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 60px auto 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: rgba(17, 17, 18, 0.1);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: var(--color-bg-pure);
    border: 3px solid var(--color-primary);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px rgba(0, 102, 204, 0.6);
}

.timeline-item.left {
    left: 0;
}

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

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

.timeline-content {
    padding: 30px;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    position: relative;
    border-radius: 16px;
}

.timeline-date {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
    font-family: 'Outfit', sans-serif;
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content p {
    font-size: 13.5px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-weight: 300;
}


/* ==========================================================================
   11. 新闻列表页 (news.html) 专属样式
   ========================================================================== */
.news-list-section {
    padding: 80px 0 100px;
    background-color: var(--color-bg-pure);
}

.news-tabs-wrap {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 20px;
}

.news-tab-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-radius: 20px;
    transition: all var(--transition-fast);
}

.news-tab-btn:hover {
    color: var(--color-text-primary);
}

.news-tab-btn.active {
    background-color: rgba(17, 17, 18, 0.08);
    color: var(--color-text-primary);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.news-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.news-list-card {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.news-list-card:hover {
    transform: translateY(-6px);
}

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

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

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

.news-card-body {
    padding: 32px;
}

.news-card-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-primary);
    background-color: rgba(0, 102, 204, 0.1);
    padding: 4px 12px;
    border-radius: 12px;
    margin-bottom: 16px;
}

.news-card-date {
    display: block;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
    font-family: 'Outfit', sans-serif;
}

.news-card-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
}

.news-card-excerpt {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-weight: 300;
}


/* ==========================================================================
   12. 支持与服务页 (support.html) 专属样式
   ========================================================================== */
.support-hero {
    width: 100%;
    height: auto;
    min-height: 680px;
    padding: 152px 0 96px;
    background:
        radial-gradient(circle at 82% 24%, rgba(10, 92, 255, 0.11), transparent 32%),
        linear-gradient(180deg, var(--color-bg-pure) 0%, var(--color-bg-light) 100%);
}

.support-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    align-items: center;
    gap: 80px;
    width: 100%;
}

.support-hero-copy {
    max-width: 650px;
}

.support-eyebrow,
.support-repo-kicker {
    display: block;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.8px;
    text-transform: uppercase;
}

.support-title {
    margin-top: 16px;
    font-size: clamp(42px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -1.6px;
}

.support-lead {
    max-width: 620px;
    margin-top: 24px;
    color: var(--color-text-secondary);
    font-size: 17px;
    line-height: 1.75;
}

.support-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.support-tags span {
    padding: 8px 13px;
    color: var(--color-text-primary);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1;
}

.support-primary-link {
    min-height: 48px;
    margin-top: 32px;
    color: var(--color-absolute-white);
    background-color: var(--color-primary);
}

.support-primary-link:hover {
    color: var(--color-absolute-white);
    background-color: var(--color-primary-hover);
    box-shadow: 0 10px 30px rgba(10, 92, 255, 0.2);
}

.support-primary-link:focus-visible,
.support-contact-method:focus-visible {
    outline: 3px solid rgba(10, 92, 255, 0.35);
    outline-offset: 4px;
}

.support-repo-card {
    min-width: 0;
    padding: 36px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    box-shadow: 0 22px 60px rgba(17, 17, 18, 0.08);
}

.support-repo-heading {
    display: flex;
    align-items: center;
    gap: 12px;
}

.support-repo-icon,
.support-contact-icon,
.support-contact-method-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    color: var(--color-primary);
    background-color: rgba(10, 92, 255, 0.09);
}

.support-repo-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
}

.support-repo-icon svg,
.support-contact-icon svg,
.support-contact-method-icon svg {
    width: 22px;
    height: 22px;
}

.support-repo-card h2 {
    margin-top: 24px;
    font-size: clamp(20px, 2.2vw, 27px);
    line-height: 1.3;
    overflow-wrap: anywhere;
}

.support-repo-card > p {
    margin-top: 14px;
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

.support-feature-list {
    display: grid;
    gap: 14px;
    margin-top: 28px;
    list-style: none;
}

.support-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--color-text-primary);
    font-size: 14px;
    line-height: 1.5;
}

.support-feature-list svg {
    width: 18px;
    height: 18px;
    margin-top: 1px;
    color: var(--color-primary);
}

.support-contact-section {
    padding: 104px 0;
    background-color: var(--color-bg-pure);
}

.support-contact-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(400px, 1fr);
    align-items: center;
    gap: 56px;
    padding: 40px;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 24px;
}

.support-contact-intro h2 {
    margin-top: 12px;
    font-size: clamp(30px, 3.6vw, 42px);
    line-height: 1.18;
    letter-spacing: -0.8px;
}

.support-contact-intro p {
    max-width: 520px;
    margin-top: 16px;
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.7;
}

.support-contact-details {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.support-contact-person {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 14px;
}

.support-contact-icon,
.support-contact-method-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
}

.support-contact-label,
.support-contact-method small {
    display: block;
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
}

.support-contact-person strong,
.support-contact-method strong {
    display: block;
    margin-top: 3px;
    color: var(--color-text-primary);
    font-size: 16px;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.support-contact-method {
    display: flex;
    align-items: center;
    min-width: 0;
    min-height: 74px;
    gap: 12px;
    padding: 14px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.support-contact-method:hover {
    color: inherit;
    border-color: rgba(10, 92, 255, 0.35);
    box-shadow: 0 8px 22px rgba(17, 17, 18, 0.05);
    transform: translateY(-2px);
}

/* ==========================================================================
   13. 高端页脚 (Footer Section)
   ========================================================================== */
.site-footer {
    background-color: var(--color-bg-pure);
    padding: 80px 40px 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-grid {
    display: grid;
    grid-template-columns: minmax(250px, 1.45fr) repeat(2, minmax(150px, 1fr)) minmax(280px, 1.5fr);
    gap: 36px;
    align-items: start;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.brand-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.col-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* 页脚最后一列展示两个微信联系二维码 */
.footer-contact-qr {
    justify-self: end;
    text-align: left;
    min-width: 0;
}

.footer-contact-qr .footer-col-title {
    margin-bottom: 16px;
}

.footer-qr-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    width: 280px;
    max-width: 100%;
}

.footer-qr-card {
    min-width: 0;
    margin: 0;
    text-align: center;
}

.footer-qr-link {
    display: block;
    overflow: hidden;
    padding: 4px;
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    box-shadow: var(--color-shadow-light);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.footer-qr-link:hover,
.footer-qr-link:focus-visible {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.footer-qr-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.footer-qr-image {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 6px;
}

.footer-qr-card figcaption {
    margin-top: 8px;
    color: var(--color-text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding-top: 36px;
    text-align: center;
}

.copyright {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    font-size: 13.5px;
    color: var(--color-text-secondary);
}

.footer-copyright-logo {
    height: 22px;
    width: auto;
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.icp-record {
    color: var(--color-text-secondary);
    font-size: 13px;
    line-height: 1.5;
    text-decoration: none;
    transition: color 0.2s ease;
}

.icp-record:hover,
.icp-record:focus-visible {
    color: var(--color-text-primary);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    color: var(--color-text-secondary);
}

.social-links a:hover {
    color: var(--color-text-primary);
}

.social-links svg {
    width: 20px;
    height: 20px;
}


/* ==========================================================================
   14. 响应式布局媒体查询 (Media Queries)
   ========================================================================== */

/* 宽屏平板 & 中小屏幕 PC */
@media (max-width: 1024px) {
    .header-container {
        padding: 0 24px;
        min-height: 72px;
    }

    .nav-link {
        padding: 0 16px;
    }

    .slide-title {
    color: var(--color-text-primary);
        font-size: 44px;
    }

    .tech-card {
        height: 500px;
    }

    .card-overlay {
        padding: 40px;
    }

    .card-title {
        font-size: 26px;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-list-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .support-hero-grid {
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-contact-qr {
        justify-self: start;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 1000;
        width: 100%;
        height: calc(100vh - 72px);
        overflow-y: auto;
        background-color: var(--color-bg-light);
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        height: auto;
        gap: 20px;
        padding: 40px 32px;
        background-color: transparent;
        border-radius: 0;
    }

    .nav-item {
        width: 100%;
        height: auto;
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-link {
        width: 100%;
        padding: 12px 0;
        font-size: 18px;
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: transparent;
        border: none;
        box-shadow: none;
        transition: max-height var(--transition-normal) ease-out;
    }

    .nav-item.active .dropdown-menu {
        max-height: 720px;
    }

    .dropdown-container {
        flex-direction: column;
        gap: 16px;
        padding: 16px 12px;
    }

    .dropdown-left {
        width: 100%;
        padding-right: 0;
        padding-bottom: 16px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .dropdown-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px;
    }
}

/* 平板 & 手机端通用菜单折叠 */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: inline-flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-bg-light);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-normal), visibility var(--transition-normal);
        height: calc(100vh - 72px);
        z-index: 1000;
        overflow-y: auto;
    }

    .header-container {
        height: 72px;
        min-height: 72px;
        flex-wrap: nowrap;
    }

    .header-right {
        display: none;
    }

    .site-header.menu-open .nav-menu {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        height: auto;
        padding: 40px 24px;
        gap: 24px;
    }

    .nav-item {
        width: 100%;
        height: auto;
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-link {
        width: 100%;
        padding: 12px 0;
        font-size: 18px;
        justify-content: space-between;
    }

    .nav-arrow {
        width: 18px;
        height: 18px;
    }

    .dropdown-menu {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        border: none;
        background-color: transparent;
        max-height: 0;
        overflow: hidden;
        width: 100%;
        transition: max-height var(--transition-normal) ease-out;
    }

    .nav-item.active .dropdown-menu {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
        max-height: 500px;
    }

    .dropdown-container {
        flex-direction: column;
        padding: 16px 12px;
        gap: 16px;
    }

    .dropdown-left {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding-right: 0;
        padding-bottom: 16px;
    }

    .dropdown-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .dropdown-item {
        padding: 8px 0;
    }

    .header-right .lang-selector,
    .header-right .btn-purchase {
    color: var(--color-absolute-white) !important;
        display: none;
    }

    .carousel-nav {
        display: none;
    }

    .slide-title {
    color: var(--color-text-primary);
        font-size: 36px;
    }

    .slide-desc {
    color: var(--color-text-secondary);
        font-size: 16px;
    }

    .section-tron1 {
        justify-content: flex-start;
        padding: 0 10%;
    }

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

    .tech-card {
        height: 450px;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .case-card {
        flex-direction: column;
        height: auto;
    }

    .case-img-wrap {
        width: 100%;
        height: 200px;
    }

    .modal-content-wrap {
        padding: 32px 24px;
    }

    .modal-title {
        font-size: 20px;
    }

    /* 二级页面公共 Hero */
    .section-sub-hero {
        height: 45vh;
    }

    .support-hero {
        height: auto;
        min-height: 0;
        padding: 128px 0 72px;
    }

    .support-hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .support-hero-grid,
    .support-contact-section .sub-container {
        padding-right: 24px;
        padding-left: 24px;
    }

    .support-title {
        font-size: clamp(36px, 10vw, 48px);
    }

    .support-lead {
        font-size: 16px;
    }

    .support-repo-card {
        padding: 28px;
    }

    .support-contact-section {
        padding: 72px 0;
    }

    .support-contact-card {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 28px;
    }


    .sub-hero-title {
        font-size: 32px;
    }

    .sub-hero-desc {
        font-size: 15px;
    }

    /* 关于我们 intro */
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-tech-grid {
        grid-template-columns: 1fr;
    }

    /* 时间轴转为单侧排列 */
    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item.right {
        left: 0%;
    }

    .timeline-item::after {
        left: 23px;
        right: auto;
    }

    .timeline-item.right::after {
        left: 23px;
    }

    /* 新闻网格单列 */
    .news-list-grid {
        grid-template-columns: 1fr;
    }

    /* 底部栅格变单列 */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-contact-qr {
        grid-column: auto;
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .support-title {
        font-size: 36px;
        letter-spacing: -0.8px;
    }

    .support-primary-link {
        width: 100%;
        padding-right: 20px;
        padding-left: 20px;
    }

    .support-repo-card,
    .support-contact-card {
        padding: 24px;
    }

    .support-contact-details {
        grid-template-columns: 1fr;
    }

}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .support-contact-method,
    .support-primary-link {
        transition: none;
    }

    .support-contact-method:hover,
    .support-primary-link:hover svg {
        transform: none;
    }
}

/* ==========================================================================
   10. 产品详情页样式 (Sub-nav, Specs, Table, Download)
   ========================================================================== */

/* 产品子导航 */
.sub-nav {
    position: sticky;
    top: 72px; /* 主导航高度 */
    left: 0;
    right: 0;
    height: 52px;
    background-color: rgba(var(--color-dark-rgb), 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    z-index: 990;
    transition: transform var(--transition-normal);
}

.sub-nav-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sub-nav-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.sub-nav-menu {
    display: flex;
    align-items: center;
    gap: 24px;
}

.sub-nav-link {
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.sub-nav-link:hover,
.sub-nav-link.active {
    color: var(--color-text-primary);
}

.sub-nav-btn {
    font-size: 13px;
    font-weight: 500;
    padding: 6px 16px;
    border-radius: 20px;
    background-color: var(--color-text-primary);
    color: var(--color-black);
    transition: opacity var(--transition-fast);
}

.sub-nav-btn:hover {
    opacity: 0.9;
}

/* 详情页 Hero 区域 */
.product-hero {
    height: calc(85vh - 72px);
    min-height: 500px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.product-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
    z-index: 1;
}

.product-hero-content {
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.product-hero-tag {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.product-hero-title {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 16px;
}

.product-hero-desc {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto 36px auto;
}

.product-hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* 网格特性展示区 */
.section-features {
    padding: 100px 0;
    background-color: var(--color-bg-pure);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

.feature-card {
    border-radius: 20px;
    background-color: var(--color-bg-light);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card.large {
    grid-column: span 8;
}

.feature-card.medium {
    grid-column: span 6;
}

.feature-card.small {
    grid-column: span 4;
}

.feature-card-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.feature-card-img {
    margin-top: 40px;
    border-radius: 12px;
    overflow: hidden;
    background-color: rgba(17, 17, 18, 0.02);
}

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

/* 参数面板样式 */
.section-specs {
    padding: 100px 0;
    background-color: var(--color-bg-light);
}

.specs-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 48px;
    text-align: center;
}

.specs-table {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.specs-table td {
    padding: 20px 24px;
    font-size: 15px;
}

.specs-label {
    font-weight: 600;
    color: var(--color-text-muted);
    width: 30%;
}

.specs-value {
    color: var(--color-text-primary);
}

/* 订购咨询表单页面样式 (Order Page) */
.section-order {
    padding: 140px 0 100px 0;
    background-color: var(--color-bg-pure);
    min-height: 100vh;
}

.order-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: start;
}

.order-info {
    position: sticky;
    top: 120px;
}

.order-info-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

.order-info-desc {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 40px;
}

.order-info-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.order-info-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(var(--color-dark-rgb), 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    border: 1px solid rgba(255,255,255,0.06);
}

.order-contact-email {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
}

.order-contact-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--color-primary);
    text-decoration: none;
    text-underline-offset: 3px;
    overflow-wrap: anywhere;
}

.order-contact-link:hover {
    text-decoration: underline;
}

.order-contact-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

.order-qr-contact {
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border);
}

.order-qr-title {
    margin: 0;
    color: var(--color-text-primary);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
}

.order-qr-desc {
    margin: 8px 0 20px;
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.order-qr-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    width: 288px;
    max-width: 100%;
}

.order-qr-card {
    min-width: 0;
    margin: 0;
    text-align: center;
}

.order-qr-link {
    display: block;
    min-width: 44px;
    min-height: 44px;
    overflow: hidden;
    padding: 6px;
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--color-shadow-light);
    touch-action: manipulation;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.order-qr-link:hover,
.order-qr-link:focus-visible {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.order-qr-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.order-qr-image {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 7px;
}

.order-qr-card figcaption {
    margin-top: 8px;
    color: var(--color-text-secondary);
    font-size: 12px;
    line-height: 1.5;
}

.order-card {
    background-color: var(--color-bg-light);
    border-radius: 24px;
    padding: 48px;
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    position: relative;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

.form-group label.required::after {
    content: ' *';
    color: #ff453a;
}

.form-control {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border); box-shadow: var(--color-shadow-light);
    border-radius: 10px;
    padding: 14px 16px;
    font-family: inherit;
    font-size: 15px;
    color: var(--color-text-primary);
    outline: none;
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.25);
    background-color: rgba(0, 0, 0, 0.4);
}

.form-error {
    color: #ff453a;
    font-size: 12px;
    margin-top: 6px;
    display: none;
}

.form-group.has-error .form-control {
    border-color: #ff453a;
}

.form-group.has-error .form-error {
    display: block;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    background-color: var(--color-text-primary);
    color: var(--color-black);
    font-weight: 600;
    border-radius: 10px;
    padding: 16px;
    margin-top: 16px;
    font-size: 15px;
    transition: background-color var(--transition-fast);
}

.btn-submit:hover {
    background-color: rgba(17, 17, 18, 0.9);
}

/* 订购成功屏样式 */
.order-success-screen {
    text-align: center;
    padding: 40px 0;
}

.success-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: rgba(48, 209, 88, 0.1);
    color: var(--color-success);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.success-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.success-desc {
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* 详情页移动端响应式补充 */
@media (max-width: 768px) {
    .sub-nav {
        top: 60px; /* 移动端主导航高度 */
        padding: 0 16px;
    }

    .sub-nav-container {
        padding: 0;
    }

    .sub-nav-menu {
        gap: 12px;
    }

    .sub-nav-link {
        font-size: 12px;
    }

    .sub-nav-btn {
        padding: 4px 10px;
        font-size: 11px;
    }

    .features-grid {
        display: flex;
        flex-direction: column;
    }

    .feature-card {
        padding: 24px;
    }

    .feature-card.large,
    .feature-card.medium,
    .feature-card.small {
        grid-column: span 12;
    }

    .specs-table td {
        padding: 16px 12px;
        font-size: 13px;
    }

    .specs-label {
        width: 40%;
    }

    .order-layout {
        grid-template-columns: 1fr;
        gap: 40px;
        min-width: 0;
    }

    .order-info,
    .order-card {
        position: static;
        min-width: 0;
    }

    .order-card {
        padding: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-group.full-width {
        grid-column: span 1;
    }

    .checkbox-group {
        grid-template-columns: 1fr !important;
    }

    .order-qr-list {
        width: min(288px, 100%);
    }
}

/* 多语言切换防闪烁与过渡样式 */
.lang-en-pre [data-zh] {
    visibility: hidden;
}

/* ==========================================================================
   11. 多形态机器人协同任务展示板块样式 (新增)
   ========================================================================== */
.section-collab {
    padding: 120px 0;
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    background-image: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.6) 50%, rgba(0, 0, 0, 0.85) 100%), url('images/multi_robot_collab.png');
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* 装饰性科技背景网格 */
.section-collab::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.007) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255, 255, 255, 0.007) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center;
    pointer-events: none;
    z-index: 1;
}

.collab-container {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 2;
}

.collab-header {
    text-align: center;
    margin-bottom: 70px;
}

.collab-header .section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-text-primary);
    margin-bottom: 16px;
    background: rgba(255, 255, 255, 0.08);
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
}

.collab-header .section-title {
    font-size: 44px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.collab-header .section-desc {
    max-width: 800px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.collab-content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.collab-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 48px 40px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    position: relative;
    overflow: hidden;
}

.collab-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.collab-card:hover {
    transform: translateY(-8px);
    border-color: rgba(17, 17, 18, 0.18);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(255, 255, 255, 0.03);
}

.collab-card:hover::before {
    opacity: 1;
}

.collab-card-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
    color: var(--color-text-primary);
    transition: all 0.3s ease;
}

.collab-card-icon svg {
    width: 24px;
    height: 24px;
    stroke-width: 1.5;
}

.collab-card:hover .collab-card-icon {
    background: var(--color-white);
    color: var(--color-black);
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.collab-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 16px;
    transition: color 0.3s ease;
}

.collab-card p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(17, 17, 18, 0.55);
    transition: color 0.3s ease;
}

.collab-card:hover p {
    color: var(--color-text-secondary);
}

.collab-action {
    text-align: center;
}

.collab-action .btn {
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 30px;
}

/* 响应式调整 */
@media (max-width: var(--max-width-site)) {
    .collab-content-grid {
        gap: 20px;
    }
    .collab-card {
        padding: 40px 30px;
    }
}

@media (max-width: 992px) {
    .collab-content-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto 40px auto;
    }
    .collab-header .section-title {
        font-size: 34px;
    }
    .section-collab {
        padding: 80px 0;
    }
}

@media (max-width: 768px) {
    .collab-container {
        padding: 0 24px;
    }
    .collab-card {
        padding: 32px 24px;
    }
}

/* Logo 图片现代样式 */
.logo-img {
    height: 64px;
    width: auto;
    display: block;
    object-fit: contain;
    transition: transform var(--transition-fast);
}

.logo:hover .logo-img {
    transform: scale(1.02);
}

.logo-img-footer {
    height: 36px;
    width: auto;
    display: block;
    object-fit: contain;
    opacity: 0.9;
    filter: brightness(0.95);
    transition: opacity var(--transition-fast);
}

.footer-logo:hover .logo-img-footer {
    opacity: 1;
}



/* ==========================================================================
   对标 LimX Dynamics 官方网站 (limxdynamics.com/zh) 高质感样式模块
   ========================================================================== */

/* 1. 顶部 Header 右侧高亮胶囊按钮 */
/* 1. 顶部 Header 右侧【采购/合作】胶囊按钮：白底黑字 */
.header-btn-inquiry,
a.header-btn-inquiry {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 20px;
    border-radius: 9999px;
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid #e5e5e7;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.header-btn-inquiry:hover,
a.header-btn-inquiry:hover {
    background-color: #f5f5f7 !important;
    color: #000000 !important;
    border-color: #d2d2d7;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

/* 2. LimX 官方极简浅灰圆角卡片模块 (#F5F5F7 / #F5F5F5) */
.limx-card-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 24px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}
@media (min-width: 1024px) {
    .limx-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .limx-card-full {
        grid-column: span 2 / span 2;
    }
}

.limx-card-gray {
    background-color: #F5F5F7;
    border-radius: 24px;
    overflow: hidden;
    display: flex;
    flex-col: column;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 40px 24px 32px 24px;
    min-height: 480px;
    position: relative;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.limx-card-gray:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.limx-card-header {
    text-align: center;
    z-index: 2;
    max-width: 90%;
}
.limx-card-tag {
    font-size: 13px;
    letter-spacing: 0.05em;
    color: #86868b;
    margin-bottom: 8px;
    display: block;
    font-weight: 500;
}
.limx-card-title {
    font-size: 36px;
    font-weight: 700;
    color: #1d1d1f;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.limx-card-desc {
    font-size: 16px;
    color: #515154;
    margin-bottom: 20px;
    line-height: 1.5;
}

.limx-card-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}
.limx-card-link {
    font-size: 14px;
    font-weight: 500;
    color: #1d1d1f;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: opacity 0.2s ease;
}
.limx-card-link:hover {
    opacity: 0.7;
    text-decoration: underline;
}

.limx-card-image-wrapper {
    width: 100%;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
    z-index: 1;
}
.limx-card-image {
    max-height: 260px;
    width: auto;
    object-fit: contain;
    transition: transform 0.5s ease;
}
.limx-card-gray:hover .limx-card-image {
    transform: scale(1.03);
}

/* 3. 创新故事 (Innovation Stories) 横向视窗模块 */
.story-section {
    padding: 80px 0;
    background-color: #ffffff;
}
.story-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 32px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}
@media (min-width: 768px) {
    .story-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
.story-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background-color: #1d1d1f;
    aspect-ratio: 16 / 9;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}
.story-card-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0.88;
}
.story-card:hover .story-card-bg {
    transform: scale(1.05);
    opacity: 0.98;
}
.story-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0) 100%);
    color: #ffffff;
}
.story-card-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: #ffffff;
}

/* 4. 极简新闻中心三列白底卡片 */
.limx-news-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 28px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}
@media (min-width: 768px) {
    .limx-news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
.limx-news-card {
    background: #ffffff;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.limx-news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 36px rgba(0, 102, 204, 0.12);
    border-color: rgba(0, 102, 204, 0.3);
}

.limx-news-card:hover .limx-news-title {
    color: var(--color-primary) !important;
}

.limx-news-thumb {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.limx-news-card:hover .limx-news-thumb {
    transform: scale(1.05);
}
.limx-news-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.limx-news-title {
    font-size: 18px;
    font-weight: 700;
    color: #1d1d1f;
    line-height: 1.4;
    margin-bottom: 16px;
}
.limx-news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}
.limx-news-tag {
    background: #F5F5F7;
    color: #1d1d1f;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}
.limx-news-date {
    font-size: 13px;
    color: #86868b;
}



/* ==========================================================================
   语言切换右侧【采购/合作】按钮超级强效锁定：纯白背景 (#ffffff) + 纯黑文字 (#000000)
   ========================================================================== */
.btn-purchase,
.header-right .btn-purchase,
.site-header:not(.scrolled) .btn-purchase,
.site-header.scrolled .btn-purchase,
.site-header .header-right a.btn-purchase,
.site-header .header-right a,
a.header-btn-inquiry {
    background-color: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #d2d2d7 !important;
    border-radius: 9999px !important;
    font-weight: 600 !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
    transition: all 0.3s ease !important;
}

.btn-purchase:hover,
.header-right .btn-purchase:hover,
.site-header:not(.scrolled) .btn-purchase:hover,
.site-header.scrolled .btn-purchase:hover,
.site-header .header-right a.btn-purchase:hover,
.site-header .header-right a:hover,
a.header-btn-inquiry:hover {
    background-color: #f5f5f7 !important;
    color: #000000 !important;
    border-color: #000000 !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16) !important;
}



/* ==========================================================================
   首页展示图全量统一固定尺寸与美观度规范 (Unified Image Aspect Ratio & Size)
   ========================================================================== */

/* 1. 产品矩阵卡片展示图统一规范 */
.product-card {
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    height: 100% !important;
    border-radius: 16px !important;
    overflow: hidden !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05) !important;
    border: 1px solid #e5e5e7 !important;
    transition: transform 0.4s ease, box-shadow 0.4s ease !important;
}

.product-card:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.1) !important;
}

.product-card-image {
    width: 100% !important;
    height: 240px !important;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    border-radius: 16px 16px 0 0 !important;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.product-card:hover .product-card-image {
    transform: scale(1.05) !important;
}

.product-card-content {
    padding: 24px !important;
    flex: 1 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
}

/* 2. 创新故事 / 应用案例视窗展示图统一规范 */
.story-card {
    width: 100% !important;
    height: 280px !important;
    aspect-ratio: 16 / 9 !important;
    border-radius: 20px !important;
    overflow: hidden !important;
    position: relative !important;
}

.story-card-bg,
.case-card-image {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* 3. 新闻中心封面图统一规范 */
.limx-news-thumb,
.news-thumb-img {
    width: 100% !important;
    height: 220px !important;
    aspect-ratio: 16 / 9 !important;
    object-fit: cover !important;
    border-radius: 16px 16px 0 0 !important;
}

.limx-card-image {
    max-height: 240px !important;
    height: 240px !important;
    width: auto !important;
    object-fit: contain !important;
}



/* 统一产品卡片【查看详情 →】按钮尺寸与字体样式 */
.product-card-link {
    font-size: 15px !important;
    font-weight: 600 !important;
    color: var(--color-primary, #0066cc) !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    margin-top: 16px !important;
    text-decoration: none !important;
    transition: all 0.2s ease !important;
}

.product-card-link:hover {
    color: #004499 !important;
    transform: translateX(4px) !important;
}


/* ==========================================================================
   产品矩阵 5 款卡片强制单行并排展示 (5 Cards Single-Row Layout)
   ========================================================================== */
.product-grid {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 16px !important;
    width: 100% !important;
    margin-top: 40px !important;
}

/* 适配中小屏幕横向平滑滚动，保持永远单行不换行 */
@media (max-width: 1200px) {
    .product-grid {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        padding-bottom: 16px !important;
        -webkit-overflow-scrolling: touch !important;
    }
    .product-card {
        flex: 0 0 260px !important;
        scroll-snap-align: start !important;
    }
}



/* ==========================================================================
   主页轮播卡片大小不变，图片 100% 完整显示无裁剪 (Carousel Contain Mode)
   ========================================================================== */
.carousel-slide {
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: center center !important;
    background-color: #fafafa !important;
}



/* Hero 轮播越往两边越淡的渐变背景与无边框羽化 (Horizontal Fading Gradient & Borderless) */
.hero-section {
    position: relative !important;
    background: #F5F5F7 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: clamp(520px, 75vh, 760px) !important;
    min-height: 520px !important;
    margin-bottom: 0 !important;
    overflow: hidden !important;
}

.carousel-slide {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 100% !important;
    padding: 10px 20px !important;
    transition: background 0.8s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* Slide 1: MASC - S4 - 四驱四转 (中间科技灰白，越往两边越淡化为 #F5F5F7) */
.slide-theme-100k {
    background: linear-gradient(to right, #F5F5F7 0%, #e2e6ea 50%, #F5F5F7 100%) !important;
}

/* Slide 2: MASC - 田间数据采集机器人 (中间智慧农业绿，越往两边越淡化为 #F5F5F7) */
.slide-theme-agri {
    background: linear-gradient(to right, #F5F5F7 0%, #d6ebd0 50%, #F5F5F7 100%) !important;
}

/* Slide 3: MASC - 大灵风 (中间科研蓝，越往两边越淡化为 #F5F5F7) */
.slide-theme-10c {
    background: linear-gradient(to right, #F5F5F7 0%, #dbe8f5 50%, #F5F5F7 100%) !important;
}

/* Slide 4: MASC - 复合机器人 (中间重载工业灰，越往两边越淡化为 #F5F5F7) */
.slide-theme-50c {
    background: linear-gradient(to right, #F5F5F7 0%, #e1e5eb 50%, #F5F5F7 100%) !important;
}

.slide-container {
    max-width: 1400px !important;
    width: 100% !important;
    margin: 0 auto !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 20px !important;
}

.slide-content {
    max-width: 860px !important;
    margin: 0 auto !important;
    text-align: center !important;
}

/* 1. 副标题 (Subtitle - 顶部小标) */
.slide-subtitle {
    display: inline-block !important;
    font-size: 15px !important;
    font-weight: 400 !important;
    color: rgba(29, 29, 31, 0.75) !important;
    letter-spacing: 0.04em !important;
    margin-bottom: 2px !important;
}

/* 2. 主标题 (Title - 核心大字) */
.slide-title {
    font-size: 44px !important;
    font-weight: 700 !important;
    color: #1d1d1f !important;
    letter-spacing: -0.02em !important;
    margin: 4px 0 6px 0 !important;
    line-height: 1.15 !important;
}

/* 3. 一句话描绘/标语 (Desc - 粗体标语) */
.slide-desc {
    font-size: 19px !important;
    font-weight: 500 !important;
    color: rgba(29, 29, 31, 0.75) !important;
    letter-spacing: 0.02em !important;
    margin-bottom: 18px !important;
}

/* 4. 双胶囊控制按钮 (LimX Official Pill Buttons) */
.slide-actions {
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 16px !important;
}

.btn-pill-limx {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    padding: 7px 20px !important;
    border-radius: 9999px !important;
    border: 1px solid rgba(29, 29, 31, 0.5) !important;
    background: rgba(255, 255, 255, 0.3) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
    color: #1d1d1f !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    text-decoration: none !important;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.btn-pill-limx:hover {
    background: rgba(0, 0, 0, 0.1) !important;
    border-color: rgba(29, 29, 31, 0.85) !important;
    color: #000000 !important;
    transform: translateY(-1px) !important;
}

.btn-pill-limx i {
    width: 15px !important;
    height: 15px !important;
}

/* 统一标箱背景图展示视窗 (宽度 100% 随屏幕大小自适应流式伸缩变化) */
.hero-carousel .carousel-viewport,
.slide-container {
    position: relative !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    margin: 0 auto !important;
}

/* 沉浸式无边框渐变底图 (拉长全宽，contain 居中呈现) */
.slide-image-bg {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: center center !important;
    /* 核心强化：羽化遮罩消灭硬边框 */
    mask-image: radial-gradient(ellipse 90% 90% at center, #000 50%, transparent 98%) !important;
    -webkit-mask-image: radial-gradient(ellipse 90% 90% at center, #000 50%, transparent 98%) !important;
    filter: none !important;
    box-shadow: none !important;
    border: none !important;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* 产品说明文字 (往下移一行字的距离至 top: 76px，高对比度加粗发光字色) */
.slide-content-overlay {
    position: absolute !important;
    top: 76px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 100% !important;
    max-width: 880px !important;
    text-align: center !important;
    z-index: 20 !important;
    pointer-events: auto !important;
}

.slide-subtitle {
    color: #0066CC !important;
    font-weight: 700 !important;
    letter-spacing: 0.12em !important;
    text-shadow: 0 1px 4px rgba(255, 255, 255, 0.95), 0 2px 10px rgba(255, 255, 255, 0.8) !important;
}

.slide-title {
    color: #0F0F11 !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 14px rgba(255, 255, 255, 1), 0 1px 4px rgba(255, 255, 255, 0.9) !important;
}

.slide-desc {
    color: #1E1E24 !important;
    font-weight: 600 !important;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 1), 0 1px 3px rgba(255, 255, 255, 0.9) !important;
}

.carousel-slide:hover .slide-image-bg {
    transform: scale(1.02) translateY(-4px) !important;
}

@media (max-width: 1100px) {
    .slide-image-bg {
        width: 100% !important;
        height: 440px !important;
    }
    .slide-title {
        font-size: 32px !important;
    }
    .slide-desc {
        font-size: 16px !important;
    }
}

/* ==========================================================================
   技术大屏展示区：图片 100% 完整显示 + 双侧淡化自适应渐变背景 (Contain & Fading Palette)
   ========================================================================== */
.section-showcase {
    position: relative !important;
    padding: 40px 20px 70px !important;
    overflow: hidden !important;
    transition: background 0.8s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* 1. MASC Swarm 多机协同系统：科技蓝调渐变 (越往两边越淡化为 #F5F5F7) */
.showcase-swarm {
    background: linear-gradient(to right, #F5F5F7 0%, #dbe8f5 50%, #F5F5F7 100%) !important;
}

/* 2. 3D 激光 SLAM 点云建图：质感工业灰渐变 (越往两边越淡化为 #F5F5F7) */
.showcase-slam {
    background: linear-gradient(to right, #F5F5F7 0%, #e1e5eb 50%, #F5F5F7 100%) !important;
}

/* 3. MASC - S4 - 四驱四转：科技纯净灰白调渐变 (越往两边越淡化为 #F5F5F7) */
.showcase-100k {
    background: linear-gradient(to right, #F5F5F7 0%, #e2e6ea 50%, #F5F5F7 100%) !important;
}

.showcase-container {
    position: relative !important;
    width: 1680px !important;
    max-width: 99vw !important;
    height: 720px !important;
    margin: 0 auto !important;
}

/* 图片 100% 完整显示 contain + 饱满巨幕羽化遮罩 */
.showcase-image-bg {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: center center !important;
    mask-image: radial-gradient(ellipse 90% 90% at center, #000 50%, transparent 98%) !important;
    -webkit-mask-image: radial-gradient(ellipse 90% 90% at center, #000 50%, transparent 98%) !important;
    filter: none !important;
    box-shadow: none !important;
    border: none !important;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* 文字说明悬浮于图片上方内部 (彻底避开 Mask 遮罩，100% 高清完整展现) */
.showcase-content-overlay {
    position: absolute !important;
    top: 64px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 100% !important;
    max-width: 880px !important;
    text-align: center !important;
    z-index: 20 !important;
    pointer-events: auto !important;
}

/* 1. MASC Swarm 多机协同系统专属：高对比度加粗醒目字色 */
.showcase-swarm .section-tag {
    color: #0055B8 !important;
    font-weight: 700 !important;
    text-shadow: 0 1px 4px rgba(255, 255, 255, 0.95), 0 2px 10px rgba(255, 255, 255, 0.8) !important;
}

.showcase-swarm .section-title {
    color: #0D0D11 !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 14px rgba(255, 255, 255, 1), 0 1px 4px rgba(255, 255, 255, 0.9) !important;
}

.showcase-swarm .section-desc {
    color: #1F1F24 !important;
    font-weight: 600 !important;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 1), 0 1px 3px rgba(255, 255, 255, 0.9) !important;
}

/* 2. 3D 激光 SLAM 点云建图专属：高对比度加粗醒目字色 */
.showcase-slam .section-tag {
    color: #0066CC !important;
    font-weight: 700 !important;
    text-shadow: 0 1px 4px rgba(255, 255, 255, 0.95), 0 2px 10px rgba(255, 255, 255, 0.8) !important;
}

.showcase-slam .section-title {
    color: #0F0F12 !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 14px rgba(255, 255, 255, 1), 0 1px 4px rgba(255, 255, 255, 0.9) !important;
}

.showcase-slam .section-desc {
    color: #222226 !important;
    font-weight: 600 !important;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 1), 0 1px 3px rgba(255, 255, 255, 0.9) !important;
}

/* 3. MASC - S4 - 四驱四转专属：说明文字沉降移动到图片最底部，并强化极高对比度醒目字色 */
.showcase-100k .showcase-content-overlay {
    top: auto !important;
    bottom: 18px !important;
}

.showcase-100k .section-tag {
    color: #0066CC !important;
    font-weight: 700 !important;
    text-shadow: 0 1px 4px rgba(255, 255, 255, 0.95), 0 2px 10px rgba(255, 255, 255, 0.8) !important;
}

.showcase-100k .section-title {
    color: #0F0F11 !important;
    font-weight: 800 !important;
    text-shadow: 0 2px 12px rgba(255, 255, 255, 1), 0 1px 4px rgba(255, 255, 255, 0.9) !important;
}

.showcase-100k .section-desc {
    color: #1A1A1E !important;
    font-weight: 600 !important;
    text-shadow: 0 2px 10px rgba(255, 255, 255, 1), 0 1px 3px rgba(255, 255, 255, 0.9) !important;
}

.showcase-actions {
    display: flex !important;
    justify-content: center !important;
    gap: 16px !important;
}

/* ==========================================================================
   6.6 关于我们 (About Us) 页面字体显示与精细排版样式
   ========================================================================== */
.about-main {
    padding-top: 72px;
}

/* Hero 巨幕 */
.about-hero-section {
    background-image: linear-gradient(180deg, rgba(11, 11, 14, 0.72) 0%, rgba(11, 11, 14, 0.88) 100%), url('images/product_collage_dark.png?v=20260730_collage');
    background-size: cover;
    background-position: center;
    min-height: 62vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-absolute-white);
    padding: 96px 24px;
}

.about-hero-container {
    max-width: 920px;
    margin: 0 auto;
}

.about-hero-badge {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.16);
    padding: 6px 18px;
    border-radius: 20px;
    border: 1px solid rgba(59, 130, 246, 0.3);
    backdrop-filter: blur(12px);
    display: inline-block;
    margin-bottom: 20px;
}

.about-hero-title {
    font-size: 44px;
    font-weight: 700;
    line-height: 1.25;
    margin: 16px 0 20px;
    letter-spacing: -0.01em;
    word-break: break-word;
}

.about-hero-desc {
    font-size: 17px;
    font-weight: 400;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.88);
    max-width: 820px;
    margin: 0 auto;
    letter-spacing: 0.01em;
    word-break: break-word;
}

/* 章节通用结构 */
.about-section {
    padding: 88px 0;
}

.about-overview-section {
    background-color: var(--color-bg-pure);
}

.about-business-section {
    background-color: var(--color-bg-light);
}

.about-team-section {
    background-color: var(--color-bg-pure);
}

.about-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.about-badge {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    display: inline-block;
    margin-bottom: 12px;
}

.about-badge-light {
    color: #60a5fa !important;
}

.about-section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.about-body-text {
    font-size: 15px;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.78;
    letter-spacing: 0.01em;
    word-break: break-word;
}

/* 概况网格与卡片 */
.about-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 48px;
    align-items: center;
}

.about-collage-card {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    margin-top: 28px;
    box-shadow: var(--color-shadow-light);
    background: var(--color-bg-light);
    padding: 16px;
}

.about-collage-img {
    width: 100%;
    height: 260px;
    object-fit: contain;
    display: block;
}

.about-vision-card {
    background: var(--color-bg-light);
    border-radius: 24px;
    padding: 44px;
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
}

.about-vision-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 10px 0 16px;
    line-height: 1.35;
}

.about-vision-highlight {
    background: var(--color-bg-pure);
    padding: 18px 22px;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    line-height: 1.65;
    margin-top: 22px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.02);
}

/* 主营业务网格 */
.about-section-header {
    text-align: center;
    margin-bottom: 56px;
}

.about-business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.about-business-card {
    background: var(--color-bg-pure);
    border-radius: 20px;
    padding: 40px 36px;
    border: 1px solid var(--color-border);
    box-shadow: var(--color-shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.about-business-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.07);
}

.about-business-icon {
    width: 56px;
    height: 56px;
    background: rgba(10, 92, 255, 0.08);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.about-business-icon svg {
    width: 28px;
    height: 28px;
}

.about-card-title {
    font-size: 21px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    line-height: 1.35;
}

/* 核心团队与服务对象 */
.about-team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 44px;
    align-items: center;
}

.about-team-card {
    background: linear-gradient(135deg, #111115 0%, #1e1e24 100%);
    border-radius: 24px;
    padding: 48px 40px;
    color: var(--color-absolute-white);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

.about-team-title {
    font-size: 32px;
    font-weight: 700;
    margin: 12px 0 20px;
    line-height: 1.3;
}

.about-team-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.8;
    font-weight: 300;
}

.about-team-desc strong {
    font-weight: 600;
    color: var(--color-absolute-white);
}

.about-client-list {
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin-top: 24px;
}

.about-client-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.about-client-icon {
    background: var(--color-bg-light);
    padding: 12px;
    border-radius: 12px;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.about-client-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

/* 响应式排版适配 */
@media (max-width: 768px) {
    .about-hero-title {
        font-size: 30px;
    }
    .about-hero-desc {
        font-size: 15px;
    }
    .about-section-title {
        font-size: 26px;
    }
    .about-team-title {
        font-size: 26px;
    }
    .about-section {
        padding: 56px 0;
    }
    .about-vision-card {
        padding: 28px 20px;
    }
    .about-team-card {
        padding: 32px 24px;
    }
}

/* ==========================================================================
   6.7 底部行动召唤 Banner (Bottom CTA) 居中对齐与精致排版样式
   ========================================================================== */
.section-bottom-cta {
    background-color: var(--color-bg-light);
    padding: 72px 24px;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.section-bottom-cta .cta-container {
    max-width: 840px;
    margin: 0 auto;
    text-align: center;
}

.section-bottom-cta h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 14px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.section-bottom-cta p {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 28px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-bottom-cta .cta-btns {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .section-bottom-cta {
        padding: 48px 20px;
    }
    .section-bottom-cta h2 {
        font-size: 24px;
    }
    .section-bottom-cta p {
        font-size: 14px;
    }
    .section-bottom-cta .cta-btns {
        flex-direction: column;
        width: 100%;
    }
    .section-bottom-cta .cta-btns .btn {
        width: 100%;
        justify-content: center;
    }
}


/* ==========================================================================
   6.8 旗舰主推产品 MASC - S4 - 四驱四转 专属视觉与仪表盘 UI 样式
   ========================================================================== */
.flagship-badge {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #ffffff;
    background: linear-gradient(135deg, #0a5cff 0%, #0047cc 100%);
    padding: 6px 16px;
    border-radius: 20px;
    box-shadow: 0 4px 16px rgba(10, 92, 255, 0.35);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 16px;
}

.flagship-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 36px;
}

.metric-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 20px 16px;
    text-align: center;
    box-shadow: var(--color-shadow-light);
    backdrop-filter: blur(10px);
}

.metric-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    margin-bottom: 4px;
    font-family: var(--font-primary);
}

.metric-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.flagship-product-card {
    position: relative;
    border: 2px solid var(--color-primary) !important;
    box-shadow: 0 8px 30px rgba(10, 92, 255, 0.12) !important;
}

.flagship-tag-ribbon {
    position: absolute;
    top: 14px;
    right: 14px;
    background: linear-gradient(135deg, #0a5cff 0%, #0047cc 100%);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
    letter-spacing: 0.05em;
    z-index: 2;
    box-shadow: 0 2px 10px rgba(10, 92, 255, 0.3);
}

.showcase-metric-pills {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin: 20px 0 24px;
}

.showcase-pill-item {
    font-size: 12px;
    font-weight: 600;
    color: #111112;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: 20px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(8px);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.showcase-pill-item strong {
    color: var(--color-primary);
    font-weight: 700;
}