/* ============================================
   上海赫胥工业设备有限公司 - 主样式表
   设计: 纯白冷晶灰 + 科技深邃绿 & 流体智蓝 极光微渐变
   ============================================ */

/* ===== CSS Variables ===== */
:root {
    /* 主色调 */
    --forest-green: #1B5E20;
    --forest-green-light: #2E7D32;
    --forest-green-dark: #0D3B0F;
    --forest-green-pale: #E8F5E9;

    --fluid-blue: #1565C0;
    --fluid-blue-light: #1E88E5;
    --fluid-blue-dark: #0D47A1;
    --fluid-blue-pale: #E3F2FD;

    /* 中性色 */
    --white: #FFFFFF;
    --crystal-gray: #F8FAFC;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* 功能色 */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 40px rgba(27, 94, 32, 0.08);

    /* 圆角 */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ===== Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    overflow-x: hidden;
    max-width: 100vw;
}
body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--crystal-gray);
    line-height: 1.7;
    overflow-x: hidden;
}
/* 防止移动端水平溢出 */
img, video, svg {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--forest-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--forest-green-light);
}

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

ul { list-style: none; }

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Aurora Gradient (极光微渐变) ===== */
.aurora-gradient {
    background: linear-gradient(135deg, 
        rgba(27,94,32,0.06) 0%, 
        rgba(21,101,192,0.06) 50%, 
        rgba(27,94,32,0.03) 100%);
}

/* ===== Top Bar ===== */
.top-bar {
    background: var(--gray-900);
    color: var(--gray-400);
    font-size: 0.8rem;
    padding: 6px 0;
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-contact a {
    color: var(--gray-300);
    display: flex;
    align-items: center;
    gap: 4px;
}
.top-contact a:hover { color: var(--white); }

/* ===== Header / Navigation ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all var(--transition);
}
.header.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: var(--shadow-md);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 700;
}
.logo-text {
    display: flex;
    flex-direction: column;
}
.logo-company {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: 0.5px;
}
.logo-subtitle {
    font-size: 0.7rem;
    color: var(--gray-500);
    letter-spacing: 0.5px;
}

/* Navigation */
.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-list > li > a {
    display: block;
    padding: 8px 16px;
    color: var(--gray-700);
    font-size: 0.92rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}
.nav-list > li > a:hover,
.nav-list > li > a.active {
    color: var(--forest-green);
    background: rgba(27,94,32,0.06);
}
.nav-list > li > a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, var(--forest-green), var(--fluid-blue));
    border-radius: 1px;
}

/* Dropdown */
.dropdown {
    position: relative;
}
.dropdown-arrow {
    margin-left: 4px;
    vertical-align: middle;
    transition: transform var(--transition-fast);
}
.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 180px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0,0,0,0.08);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition);
}
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu a {
    display: block;
    padding: 10px 14px;
    color: var(--gray-700);
    font-size: 0.88rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}
.dropdown-menu a:hover {
    background: linear-gradient(135deg, rgba(27,94,32,0.08), rgba(21,101,192,0.06));
    color: var(--forest-green);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 1px;
    transition: all var(--transition);
}
.hamburger span:nth-child(2) { margin: 5px 0; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translateY(-1px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translateY(1px); }

/* Mobile Overlay */
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition);
}
.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== Page Hero ===== */
.page-hero {
    position: relative;
    padding: 60px 0;
    background: linear-gradient(135deg, 
        rgba(27,94,32,0.04) 0%, 
        rgba(21,101,192,0.05) 50%, 
        rgba(27,94,32,0.02) 100%);
    text-align: center;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--forest-green), var(--fluid-blue));
    opacity: 0.4;
}
.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--forest-green-dark), var(--fluid-blue-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.page-hero .breadcrumb {
    font-size: 0.85rem;
    color: var(--gray-500);
}
.page-hero .breadcrumb a {
    color: var(--fluid-blue);
}
.page-hero .breadcrumb span {
    margin: 0 6px;
    color: var(--gray-400);
}

/* ===== Page Hero with Background ===== */
.home-hero {
    position: relative;
    padding: 100px 0 80px;
    background: linear-gradient(160deg,
        #080f1a 0%,
        #0c1a28 25%,
        #0a1c12 50%,
        #0c1a28 75%,
        #080f1a 100%);
    overflow: clip;
    isolation: isolate;
}

/* ===== Hero 背景幻灯片层 ===== */
.hero-bg-slides {
    position: absolute;
    inset: 0;
    z-index: 0;
    touch-action: pan-y;
}
.hero-bg-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1.05);
}
.hero-bg-slide.active {
    opacity: 1;
    transform: scale(1);
}
/* 默认渐变底（始终在最底层作为「当前设计」幻灯片） */
.hero-bg-default {
    background: none;
    opacity: 1;
    transform: scale(1);
    z-index: -1;
}

/* ===== 极光流体光晕 ===== */
.aurora-orb {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}
.aurora-orb-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    left: -150px;
    background: radial-gradient(circle, rgba(16,185,129,0.18) 0%, rgba(16,185,129,0.06) 50%, transparent 70%);
    filter: blur(80px);
    animation: aurora-breathe 8s ease-in-out infinite;
}
.aurora-orb-2 {
    width: 500px;
    height: 500px;
    bottom: -150px;
    right: -100px;
    background: radial-gradient(circle, rgba(59,130,246,0.18) 0%, rgba(59,130,246,0.06) 50%, transparent 70%);
    filter: blur(80px);
    animation: aurora-breathe 8s ease-in-out 2s infinite;
}
@keyframes aurora-breathe {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.15); }
}

.home-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(16,185,129,0.25), rgba(59,130,246,0.25), transparent);
}
.home-hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: #f1f5f9;
    line-height: 1.3;
    margin-bottom: 16px;
}
.hero-content h1 .gradient-text-solution {
    background: linear-gradient(135deg, #10b981, #0d9488, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    letter-spacing: -0.02em;
}
.hero-content p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 520px;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ===== 硬核毛玻璃卡片 ===== */
.hero-card-glass {
    position: relative;
    width: 100%;
    max-width: 420px;
    padding: 40px;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 20px 60px -10px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06) inset;
}
.hero-card-glass .feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.feature-item-glass {
    text-align: center;
    padding: 22px 14px;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}
.feature-item-glass:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px -8px rgba(16,185,129,0.25);
    border-color: rgba(16,185,129,0.4);
    background: rgba(255,255,255,0.1);
}
.feature-item-glass .feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 10px;
    background: rgba(16,185,129,0.12);
    border-radius: 14px;
    transition: background 0.3s;
}
.feature-item-glass:nth-child(3) .feature-icon,
.feature-item-glass:nth-child(4) .feature-icon {
    background: rgba(59,130,246,0.12);
}
.feature-item-glass:hover .feature-icon {
    background: rgba(16,185,129,0.18);
}
.feature-item-glass:nth-child(3):hover .feature-icon,
.feature-item-glass:nth-child(4):hover .feature-icon {
    background: rgba(59,130,246,0.18);
}
.feature-item-glass h4 {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    font-weight: 600;
    letter-spacing: 0.02em;
}
.hero-float-badge {
    position: absolute;
    top: -20px;
    right: -20px;
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    white-space: nowrap;
    z-index: 2;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}
.btn-primary {
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    color: white;
    box-shadow: 0 4px 15px rgba(27,94,32,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(27,94,32,0.4);
    color: white;
}
.btn-primary-hero {
    transform: none;
    box-shadow: 0 4px 20px rgba(16,185,129,0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-primary-hero:hover {
    transform: scale(1.05);
    color: white;
    box-shadow: 0 8px 30px rgba(16,185,129,0.35);
}
.btn-primary-hero:active {
    transform: scale(0.95);
}
.btn-outline {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(27,94,32,0.2);
    color: var(--forest-green);
}
.btn-outline:hover {
    background: rgba(27,94,32,0.05);
    border-color: var(--forest-green);
    color: var(--forest-green);
}
.btn-outline-hero {
    background: transparent;
    border: 1.5px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.85);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-outline-hero:hover {
    border-color: #10b981;
    color: #10b981;
    background: rgba(16,185,129,0.1);
    transform: translateY(-1px);
}
.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}
.btn-white {
    background: white;
    color: var(--forest-green);
    box-shadow: var(--shadow-md);
}
.btn-white:hover {
    background: var(--gray-50);
    color: var(--forest-green-light);
}

/* ===== 首页背景幻灯片 ===== */
.home-bg-slideshow {
    position: relative;
    isolation: isolate;
}
.home-bg-slideshow .bg-slides-track {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.home-bg-slideshow .bg-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    z-index: 0;
}
.home-bg-slideshow .bg-slide.active {
    opacity: 1;
    z-index: 1;
}
/* 背景上的内容确保在顶层 */
.home-bg-slideshow > .section {
    position: relative;
    z-index: 2;
}
.home-bg-slideshow > .section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: -1;
    pointer-events: none;
}
/* 白底区域完全透明叠加 */
.home-bg-slideshow > .section[style*="background: var(--white)"]::before {
    background: rgba(255,255,255,0.75);
}
/* 导航点 */
.slideshow-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.slideshow-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: 2px solid rgba(255,255,255,0.6);
    cursor: pointer;
    transition: all 0.3s;
}
.slideshow-dots .dot.active {
    background: white;
    border-color: white;
    transform: scale(1.3);
}

@media (max-width: 768px) {
    .slideshow-dots { bottom: 16px; gap: 8px; }
    .slideshow-dots .dot { width: 8px; height: 8px; }
}

/* ===== Section ===== */
.section {
    padding: 80px 0;
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-label {
    display: inline-block;
    padding: 4px 14px;
    background: linear-gradient(135deg, rgba(27,94,32,0.08), rgba(21,101,192,0.08));
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--forest-green);
    margin-bottom: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.section-header .subtitle {
    font-size: 0.95rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}
.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--forest-green), var(--fluid-blue));
    border-radius: 2px;
    margin: 16px auto 0;
}

/* ===== Product Cards ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(27,94,32,0.15);
}
.product-card-image {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.product-card-image .placeholder-icon {
    font-size: 3rem;
    opacity: 0.5;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-card-body {
    padding: 20px;
}
.product-card-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-body p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}
.product-card-body .more-link {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--forest-green);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* ===== News/Article Cards ===== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.news-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.05);
    transition: all var(--transition);
}
.news-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(27,94,32,0.12);
}
.news-date {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}
.news-date .day {
    font-size: 1.3rem;
    line-height: 1;
}
.news-date .month {
    font-size: 0.7rem;
    opacity: 0.85;
}
.news-info {
    flex: 1;
    min-width: 0;
}
.news-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 6px;
}
.news-info h3 a { color: inherit; }
.news-info h3 a:hover { color: var(--forest-green); }
.news-info .summary {
    font-size: 0.85rem;
    color: var(--gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Case Cards ===== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}
.case-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
    transition: all var(--transition);
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.case-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.case-card-image .placeholder-icon {
    font-size: 2.5rem;
    opacity: 0.5;
}
.case-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.case-industry-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(8px);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--forest-green);
}
.case-card-body {
    padding: 20px;
}
.case-card-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.case-card-body p {
    font-size: 0.85rem;
    color: var(--gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Glass Card ===== */
.glass-card {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--shadow);
    padding: 32px;
}

/* ===== Table with Horizontal Scroll ===== */
.table-wrapper {
    position: relative;
    margin: 24px 0;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.06);
    overflow: hidden;
}
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-300) transparent;
    /* Scroll shadow hints */
    background:
        linear-gradient(to right, white 30%, rgba(255,255,255,0)),
        linear-gradient(to right, rgba(255,255,255,0), white 70%) 100% 0,
        radial-gradient(farthest-side at 0% 50%, rgba(0,0,0,0.08), rgba(0,0,0,0)),
        radial-gradient(farthest-side at 100% 50%, rgba(0,0,0,0.08), rgba(0,0,0,0)) 100% 0;
    background-repeat: no-repeat;
    background-size: 40px 100%, 40px 100%, 14px 100%, 14px 100%;
    background-attachment: local, local, scroll, scroll;
}
.table-scroll::-webkit-scrollbar {
    height: 6px;
}
.table-scroll::-webkit-scrollbar-track {
    background: transparent;
}
.table-scroll::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}
.spec-table {
    width: 100%;
    min-width: 700px;
    border-collapse: collapse;
}
.spec-table th,
.spec-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.9rem;
}
.spec-table th {
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    color: var(--gray-800);
    font-weight: 700;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.spec-table tr:last-child td {
    border-bottom: none;
}
.spec-table tr:hover td {
    background: rgba(27,94,32,0.02);
}

/* ===== About Page ===== */
.about-section {
    padding: 60px 0;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-image .placeholder-icon {
    font-size: 5rem;
    opacity: 0.4;
}
.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.about-text h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--gray-900);
}
.about-text p {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}
.about-feature-item {
    padding: 16px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.05);
}
.about-feature-item h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--forest-green);
    margin-bottom: 4px;
}
.about-feature-item p {
    font-size: 0.82rem;
    color: var(--gray-500);
    margin: 0;
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.05);
    transition: all var(--transition);
}
.contact-info-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(27,94,32,0.15);
}
.contact-info-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.contact-info-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 4px;
}
.contact-info-text p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* Contact Form */
.contact-form {
    background: var(--white);
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--shadow);
}
.contact-form h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--gray-900);
}
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9rem;
    font-family: var(--font-sans);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    background: var(--crystal-gray);
    color: var(--gray-800);
    transition: all var(--transition-fast);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--forest-green);
    box-shadow: 0 0 0 3px rgba(27,94,32,0.1);
    background: var(--white);
}
.form-group textarea {
    min-height: 120px;
}
.form-submit {
    display: flex;
    align-items: center;
    gap: 12px;
}
.form-success {
    display: none;
    padding: 14px 20px;
    background: var(--forest-green-pale);
    border-radius: var(--radius);
    color: var(--forest-green);
    font-weight: 500;
    margin-top: 12px;
}

/* ===== Search ===== */
.search-box {
    max-width: 600px;
    margin: 0 auto 40px;
}
.search-box form {
    display: flex;
    gap: 12px;
}
.search-box input {
    flex: 1;
    padding: 14px 20px;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 50px;
    background: var(--white);
    outline: none;
    transition: all var(--transition-fast);
}
.search-box input:focus {
    border-color: var(--forest-green);
    box-shadow: 0 0 0 4px rgba(27,94,32,0.1);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}
.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}
.pagination a {
    background: var(--white);
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}
.pagination a:hover {
    background: var(--forest-green-pale);
    border-color: var(--forest-green);
    color: var(--forest-green);
}
.pagination .current {
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    color: white;
    border: none;
    font-weight: 700;
    box-shadow: var(--shadow);
}
.pagination .disabled {
    color: var(--gray-400);
    cursor: not-allowed;
}

/* ===== Article/News Detail ===== */
.article-detail {
    max-width: 820px;
    margin: 0 auto;
    padding: 40px 0;
}
.article-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}
.article-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    line-height: 1.4;
}
.article-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--gray-500);
    flex-wrap: wrap;
}
.article-content {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--gray-700);
}
.article-content h2 {
    font-size: 1.3rem;
    margin: 32px 0 16px;
    color: var(--gray-900);
}
.article-content h3 {
    font-size: 1.1rem;
    margin: 24px 0 12px;
    color: var(--gray-800);
}
.article-content p {
    margin-bottom: 16px;
}
.article-content img {
    border-radius: var(--radius);
    margin: 20px 0;
}
.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
    font-size: 0.9rem;
}
.article-nav a {
    color: var(--gray-600);
    max-width: 45%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.article-nav a:hover {
    color: var(--forest-green);
}

/* ===== Product Detail ===== */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 40px 0;
}
.product-gallery {
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-gallery .placeholder-icon {
    font-size: 5rem;
    opacity: 0.5;
}
.product-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-info h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.product-info .category-link {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--fluid-blue);
    margin-bottom: 16px;
}
.product-info .description {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
}
.product-content {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--gray-700);
    padding: 40px 0;
    max-width: 820px;
    margin: 0 auto;
}
.product-content h2, .product-content h3 {
    color: var(--gray-900);
    margin: 24px 0 12px;
}
.related-products {
    padding: 60px 0;
    background: var(--crystal-gray);
}

/* ===== 数智工业仪表盘 ===== */
.dashboard-strip {
    display: flex;
    align-items: center;
    justify-content: space-around;
    background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(248,250,252,0.95));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 4px 30px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.03);
    padding: 32px 16px;
    position: relative;
    overflow: hidden;
}
.dashboard-strip::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #10b981, #0d9488, #2563eb);
    border-radius: 20px 20px 0 0;
}
.dashboard-item {
    text-align: center;
    flex: 1;
    padding: 8px 16px;
}
.dashboard-number {
    font-family: 'SF Mono', 'Fira Code', 'JetBrains Mono', 'Courier New', monospace;
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(to bottom, #0f172a 0%, #334155 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}
.dashboard-label {
    font-size: 0.82rem;
    color: var(--gray-500);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.dashboard-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.08), transparent);
    flex-shrink: 0;
}

/* ===== Why Us Section ===== */
.why-us-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.why-us-card {
    padding: 32px 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.05);
    text-align: center;
    transition: all var(--transition);
}
.why-us-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: rgba(27,94,32,0.15);
}
.why-us-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--forest-green-pale), var(--fluid-blue-pale));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}
.why-us-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.why-us-card p {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== Footer ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    margin-top: 0;
}
.footer-wave {
    color: var(--gray-800);
    margin-bottom: -1px;
}
.footer-wave svg {
    width: 100%;
    height: 80px;
}
.footer-main {
    padding: 60px 0 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
}
.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255,255,255,0.08);
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: var(--gray-400);
    font-size: 0.88rem;
    transition: color var(--transition-fast);
}
.footer-col ul li a:hover {
    color: var(--white);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.footer-logo .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
    flex-shrink: 0;
}
.footer-logo h3 {
    color: var(--white);
    font-size: 1.1rem;
}
.footer-logo span {
    font-size: 0.75rem;
    color: var(--gray-500);
}
.footer-about p {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 16px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: var(--gray-400);
    font-size: 0.7rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    cursor: pointer;
}
.social-icon:hover {
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    color: white;
}
.footer-contact-col p {
    font-size: 0.85rem;
    margin-bottom: 8px;
    line-height: 1.6;
}
.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.06);
    font-size: 0.8rem;
}
.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom a {
    color: var(--gray-400);
}
.footer-bottom a:hover {
    color: var(--white);
}
.footer-credit {
    opacity: 0.6;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0,0,0,0.1);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    color: var(--gray-600);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    color: white;
    border-color: transparent;
}

/* ===== Mobile Quick Contact ===== */
.mobile-quick-contact {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(0,0,0,0.06);
    z-index: 99;
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
    grid-template-columns: repeat(4, 1fr);
}
.mqc-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px;
    color: var(--gray-600);
    font-size: 0.7rem;
    transition: color var(--transition-fast);
}
.mqc-item:hover,
.mqc-item:active {
    color: var(--forest-green);
}

/* ===== 404 Page ===== */
.not-found {
    text-align: center;
    padding: 100px 0;
}
.not-found h1 {
    font-size: 6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--forest-green), var(--fluid-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}
.not-found p {
    font-size: 1.1rem;
    color: var(--gray-500);
    margin-bottom: 32px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .home-hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-content p { max-width: none; }
    .hero-buttons { justify-content: center; }
    .hero-visual { order: -1; }
    .hero-card-glass {
        max-width: 340px;
        padding: 30px;
    }
    .aurora-orb-1 { width: 400px; height: 400px; top: -100px; left: -80px; }
    .aurora-orb-2 { width: 350px; height: 350px; bottom: -100px; right: -60px; }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .dashboard-strip { flex-wrap: wrap; gap: 16px; }
    .dashboard-divider { display: none; }
    .dashboard-item { flex: 0 0 calc(50% - 8px); }
    .why-us-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    
    .top-bar { display: none; }
    
    /* Mobile Navigation */
    .nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        background: var(--white);
        padding: 80px 20px 40px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
        z-index: 1000;
        overflow-y: auto;
    }
    .nav.active { right: 0; }
    .nav-list {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }
    .nav-list > li > a {
        padding: 12px 16px;
        font-size: 1rem;
    }
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--crystal-gray);
        margin-top: 4px;
        display: none;
    }
    .dropdown-menu.show { display: block; }
    .hamburger { display: flex; }
    
    /* Hero */
    .home-hero { padding: 60px 0 40px; }
    .hero-content h1 { font-size: 1.8rem; }
    .hero-card-glass { padding: 24px; }
    .hero-card-glass .feature-grid { gap: 12px; }
    .feature-item-glass { padding: 14px 10px; }
    .feature-item-glass .feature-icon { width: 44px; height: 44px; border-radius: 10px; }
    .feature-item-glass .feature-icon svg { width: 24px; height: 24px; }
    .hero-float-badge { 
        position: static; 
        margin-top: 16px;
        display: inline-block;
    }
    
    .section { padding: 48px 0; }
    .page-hero { padding: 40px 0; }
    .page-hero h1 { font-size: 1.5rem; }
    .section-header h2 { font-size: 1.5rem; }
    
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: 1fr; }
    .why-us-grid { grid-template-columns: 1fr; }
    .dashboard-strip { flex-wrap: wrap; gap: 12px; padding: 24px 12px; }
    .dashboard-item { flex: 0 0 calc(50% - 6px); padding: 6px 10px; }
    .dashboard-divider { display: none; }
    .dashboard-number { font-size: 1.6rem; }
    
    .about-grid,
    .contact-grid,
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom .container { flex-direction: column; text-align: center; }
    
    .mobile-quick-contact { display: grid; }
    .back-to-top { bottom: 80px; }
    
    .article-detail { padding: 20px 0; }
    .article-header h1 { font-size: 1.4rem; }
    
    .news-item { flex-direction: column; }
    .news-date { width: auto; height: auto; padding: 8px 14px; border-radius: var(--radius-sm); }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 1.5rem; }
    .home-hero { padding: 40px 0 30px; }
    .hero-card-glass { max-width: 100%; padding: 20px; }
    .btn { padding: 10px 20px; font-size: 0.85rem; }
    .hero-card-glass .feature-grid { grid-template-columns: 1fr; }
    .feature-item-glass { padding: 12px; }
    .aurora-orb-1 { width: 250px; height: 250px; top: -80px; left: -60px; }
    .aurora-orb-2 { width: 200px; height: 200px; bottom: -60px; right: -40px; }
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.sr-only { position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0); }