/* ==================== CSS Variables ==================== */
:root {
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3399ff;
    --secondary-color: #00b4d8;
    --accent-color: #00d4aa;
    --accent-light: #7fffd4;
    --text-dark: #1a1a2e;
    --text-body: #4a4a5a;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    --text-white: #ffffff;
    --bg-dark: #0f172a;
    --bg-body: #f8fafc;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --bg-section: #f1f5f9;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06), 0 4px 6px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 10px 15px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 20px 25px rgba(0,0,0,0.08);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 40px 50px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 40px rgba(0, 102, 204, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition-fast: 0.15s ease;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    --font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-body);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.lang-en body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

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

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

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* ==================== Header ==================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-white);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-decoration: none;
}

/* Logo图片样式 */
.logo-img {
    height: 220px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.logo-fallback {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 26px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.logo-icon-img {
    height: 30px;
    width: auto;
}

.slogan {
    font-size: 12px;
    color: rgba(255,255,255,0.8);
    letter-spacing: 1px;
    font-weight: 300;
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-menu li a {
    display: block;
    padding: 10px 18px;
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--text-white);
    border-radius: 1px;
    transition: var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: rgba(255,255,255,0.15);
    color: var(--text-white);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* Language Switch */
.lang-switch {
    display: flex;
    gap: 2px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    padding: 3px;
    border: 1px solid rgba(255,255,255,0.1);
}

.lang-switch a {
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    border-radius: 6px;
    transition: var(--transition);
}

.lang-switch a:hover {
    color: var(--text-white);
}

.lang-switch a.active {
    background: var(--text-white);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

/* Language Icon Trigger (mobile only) */
.lang-icon-trigger {
    display: none;
}

/* ==================== Nav Search ==================== */
.nav-search {
    position: relative;
    display: flex;
    align-items: center;
}

.nav-search-input {
    width: 220px;
    height: 36px;
    padding: 0 36px 0 14px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 18px;
    color: #fff;
    font-size: 14px;
    outline: none;
    transition: width 0.3s, background 0.2s;
}

.nav-search-input::placeholder {
    color: rgba(255,255,255,0.6);
}

.nav-search-input:focus {
    width: 280px;
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.5);
}

.nav-search-btn {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: rgba(255,255,255,0.8);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.nav-search-btn:hover {
    color: #fff;
}

/* Search Results Dropdown */
.nav-search-results {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 360px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    display: none;
    z-index: 2000;
    max-height: 440px;
    overflow-y: auto;
}

.nav-search-results.show {
    display: block;
}

.search-result-item {
    display: flex;
    align-items: flex-start;
    padding: 12px 16px;
    gap: 10px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    color: inherit;
    transition: background 0.15s;
}

.search-result-item:hover {
    background: #f8f9fa;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-type {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
    margin-top: 2px;
    flex-shrink: 0;
}

.search-result-type.product {
    background: #e3f2fd;
    color: #1976d2;
}

.search-result-type.news {
    background: #f3e5f5;
    color: #7b1fa2;
}

.search-result-type.page {
    background: #e8f5e9;
    color: #388e3c;
}

.search-result-title {
    font-size: 14px;
    font-weight: 600;
    color: #333;
}

.search-result-desc {
    font-size: 12px;
    color: #888;
    margin-top: 2px;
    line-height: 1.4;
}

.search-no-result {
    padding: 24px 16px;
    text-align: center;
    color: #999;
    font-size: 14px;
}

/* Mobile Search Button (hidden on desktop) */
.mobile-search-btn {
    display: none;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: 8px;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-search-btn:hover {
    background: rgba(255,255,255,0.2);
}

/* Mobile Search Overlay */
.mobile-search-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1002;
    background: rgba(0,0,0,0.5);
}

.mobile-search-overlay.show {
    display: block;
}

.mobile-search-bar {
    background: var(--primary-color);
    padding: 12px 16px;
    display: flex;
    gap: 10px;
    align-items: center;
}

.mobile-search-bar input {
    flex: 1;
    height: 40px;
    padding: 0 14px;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    color: #fff;
    font-size: 15px;
    outline: none;
}

.mobile-search-bar input::placeholder {
    color: rgba(255,255,255,0.6);
}

.mobile-search-bar input:focus {
    background: rgba(255,255,255,0.3);
    border-color: rgba(255,255,255,0.5);
}

#mobileSearchClose {
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

#mobileSearchClose:hover {
    background: rgba(255,255,255,0.3);
}

.mobile-search-results {
    background: #fff;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
}

/* Dropdown Menu */
.nav-menu .has-dropdown {
    position: relative;
}

.nav-menu .has-dropdown > a {
    padding-right: 32px;
}

.dropdown-arrow {
    font-size: 10px;
    transition: var(--transition);
}

.nav-menu .has-dropdown:hover > a .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
    list-style: none;
}

.nav-menu .has-dropdown:hover .dropdown-menu,
.nav-menu .dropdown-menu:hover {
    opacity: 1;
    visibility: visible;
    transform: translateY(8px);
}

.dropdown-menu li {
    margin: 4px 0;
}

.dropdown-menu li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.dropdown-menu li a:hover {
    background: var(--primary-color);
    color: var(--text-white);
}

.count-badge {
    display: none; /* 隐藏 badge */
}

/* Mobile Menu Button */

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 10px;
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: rgba(255,255,255,0.2);
}

.mobile-menu-btn span {
    width: 100%;
    height: 2px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

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

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

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

/* ==================== Main Content ==================== */
main {
    margin-top: 70px;
    min-height: calc(100vh - 70px - 200px);
}

/* ==================== Hero Carousel Section ==================== */
.hero-carousel {
    position: relative;
    width: 100vw;
    height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    /* 突破container限制，实现全宽 */
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
}

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

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    pointer-events: none;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 轮播占位符 */
.carousel-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-section) 0%, var(--border-color) 100%);
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
}

.carousel-placeholder span {
    font-size: 80px;
    opacity: 0.3;
    margin-bottom: 20px;
}

.carousel-placeholder p {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.carousel-placeholder small {
    font-size: 14px;
    opacity: 0.7;
}

/* 轮播控制按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
    opacity: 0.7;
}

.hero-carousel:hover .carousel-btn {
    opacity: 1;
}

.carousel-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: 20px;
}

.carousel-btn.next {
    right: 20px;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 20px;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.indicator.active {
    background: var(--text-white);
    width: 30px;
    border-radius: 5px;
}

/* 轮播内容叠加层 */
.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.7) 0%, rgba(0, 180, 216, 0.6) 50%, rgba(0, 212, 170, 0.55) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    pointer-events: none;
}

.carousel-content {
    text-align: center;
    color: var(--text-white);
    padding: 0 24px;
    max-width: 900px;
    pointer-events: auto;
}

.carousel-content h1 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    animation: fadeInUp 0.8s ease-out;
}

.carousel-content p {
    font-size: clamp(16px, 2.5vw, 22px);
    font-weight: 300;
    opacity: 0.95;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.carousel-content .cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 40px;
    background: var(--text-white);
    color: var(--primary-color);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    animation: fadeInUp 0.8s ease-out 0.2s both;
    text-decoration: none;
}

.carousel-content .cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255,255,255,0.3);
}

/* ==================== Hero Section (Fallback - No Images) ==================== */
.hero {
    position: relative;
    padding: 100px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    color: var(--text-white);
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0,0,0,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, var(--bg-body), transparent);
    pointer-events: none;
}

.hero h1 {
    position: relative;
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    position: relative;
    font-size: clamp(16px, 2.5vw, 22px);
    font-weight: 300;
    opacity: 0.95;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero .cta-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 40px;
    background: var(--text-white);
    color: var(--primary-color);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero .cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255,255,255,0.3);
}

/* Hero 背景图片支持 */
.hero.hero-with-image {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero.hero-with-image::before {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.85) 0%, rgba(0, 180, 216, 0.8) 50%, rgba(0, 212, 170, 0.75) 100%);
}

/* 产品图片样式 */
.product-image {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

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

/* 图片占位符 - 图片加载前显示 */
.image-placeholder {
    background: linear-gradient(135deg, var(--bg-section) 0%, var(--border-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 14px;
    min-height: 200px;
}

.image-placeholder::before {
    content: '📷';
    font-size: 48px;
    opacity: 0.3;
}

/* 响应式图片容器 */
.responsive-image {
    position: relative;
    width: 100%;
    overflow: hidden;
}

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

/* 图片画廊 */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.image-gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.image-gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.image-gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

/* ==================== Sections ==================== */
section {
    padding: 80px 24px;
    background: var(--bg-white);
    position: relative;
}

section:nth-child(even) {
    background: var(--bg-section);
}

section h2 {
    font-family: var(--font-heading);
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    margin: 16px auto 0;
}

section > p.section-desc {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
    color: var(--text-light);
    font-size: 17px;
}

/* ==================== Feature Cards ==================== */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 50px auto 0;
}

.feature-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.feature-card > div:first-child,
.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    background: linear-gradient(135deg, var(--bg-section), var(--bg-white));
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.feature-card:hover > div:first-child {
    transform: scale(1.1) rotate(-5deg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.3);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* ==================== Product Specs ==================== */
.product-specs,
.product-advantages {
    max-width: 800px;
    margin: 0 auto 40px;
}

.product-specs h3,
.product-advantages h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 24px;
    padding-left: 16px;
    border-left: 4px solid var(--primary-color);
}

.product-specs ul,
.product-advantages ul {
    list-style: none;
    display: grid;
    gap: 12px;
}

.product-specs li,
.product-advantages li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 20px;
    background: var(--bg-section);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--secondary-color);
    transition: var(--transition);
    font-size: 15px;
    color: var(--text-body);
}

.product-specs li::before,
.product-advantages li::before {
    content: '\2713';
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: bold;
}

.product-specs li:hover,
.product-advantages li:hover {
    background: var(--bg-white);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

/* ==================== News List ==================== */
.news-list {
    display: grid;
    gap: 20px;
    max-width: 900px;
    margin: 50px auto 0;
}

.news-item {
    background: var(--bg-card);
    padding: 28px 32px;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.news-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--accent-color);
}

.news-item h3 {
    margin-bottom: 12px;
}

.news-item h3 a {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.news-item h3 a:hover {
    color: var(--primary-color);
}

.news-item p {
    font-size: 15px;
    color: var(--text-light);
    margin: 0;
    line-height: 1.7;
}

.news-item .news-date {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-right: 12px;
}

/* ==================== Contact Form ==================== */
.contact-form {
    max-width: 600px;
    margin: 50px auto 0;
    padding: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

input, textarea, select {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-body);
    background: var(--bg-section);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: var(--transition);
    outline: none;
}

input:focus, textarea:focus, select:focus {
    background: var(--bg-white);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

textarea {
    resize: vertical;
    min-height: 140px;
}

button[type="submit"] {
    width: 100%;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-white);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

button[type="submit"]:active {
    transform: translateY(0);
}

/* ==================== Footer ==================== */
footer {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
    color: rgba(255,255,255,0.9);
    padding: 50px 24px 30px;
    margin-top: 0;
}

footer .container {
    text-align: center;
}

.footer-main {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-content {
    flex: 1;
    min-width: 250px;
}

footer p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.footer-qrcode img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-md);
    border: 3px solid rgba(255,255,255,0.2);
    margin-bottom: 10px;
}

.footer-qrcode p {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin: 0;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 24px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    transition: var(--transition-fast);
    padding: 4px 0;
}

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

.footer-copyright {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-copyright p {
    margin: 8px 0;
}

.footer-privacy {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-privacy a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    transition: var(--transition-fast);
}

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

/* ==================== Floating Button ==================== */
.float-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: var(--text-white);
    font-size: 24px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
    border: none;
    cursor: pointer;
}

.float-btn:hover {
    transform: scale(1.1) translateY(-4px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(0, 212, 170, 0.4);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    color: var(--primary-color);
    font-size: 20px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    border: 1px solid var(--border-color);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: var(--text-white);
}

/* ==================== CTA Button (Generic) ==================== */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-white);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ==================== Info Box ==================== */
.info-box {
    background: var(--bg-section);
    padding: 28px;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
    margin-top: 40px;
}

.info-box h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.info-box p {
    margin: 10px 0;
    color: var(--text-light);
    font-size: 15px;
}

.info-box strong {
    color: var(--text-dark);
}

/* ==================== Status Message ==================== */
.status-message {
    padding: 20px 32px;
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    animation: fadeIn 0.4s ease-out;
    box-shadow: var(--shadow-md);
}

.status-success {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    color: #166534;
    border: 2px solid #86efac;
}

.status-success::before {
    content: '✓ ';
    font-size: 20px;
    font-weight: bold;
    margin-right: 8px;
}

.status-error {
    background: linear-gradient(135deg, #fee2e2, #fecaca);
    color: #991b1b;
    border: 2px solid #fca5a5;
}

.status-error::before {
    content: '✕ ';
    font-size: 20px;
    font-weight: bold;
    margin-right: 8px;
}

/* ==================== Cards Grid ==================== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.card p {
    color: var(--text-light);
    font-size: 15px;
    margin: 0;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-up {
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== Responsive Design ==================== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    /* Carousel Responsive */
    .hero-carousel {
        height: 500px;
    }

    .carousel-btn {
        width: 44px;
        height: 44px;
    }

    .carousel-btn.prev {
        left: 12px;
    }

    .carousel-btn.next {
        right: 12px;
    }

    .carousel-indicators {
        bottom: 16px;
        gap: 6px;
    }

    .indicator {
        width: 8px;
        height: 8px;
    }

    .indicator.active {
        width: 24px;
    }

    .carousel-placeholder span {
        font-size: 60px;
    }

    .carousel-placeholder p {
        font-size: 18px;
    }

    .carousel-placeholder small {
        font-size: 13px;
    }
    header .container {
        height: 64px;
    }

    .logo {
        font-size: 20px;
    }

    .nav-menu li a {
        padding: 8px 14px;
        font-size: 14px;
    }

    .nav-search-input {
        width: 180px;
    }

    .nav-search-input:focus {
        width: 240px;
    }

    section {
        padding: 60px 20px;
    }

    .features {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .hero {
        padding: 80px 20px;
    }
}

/* Mobile (768px and below) */
@media (max-width: 768px) {
    /* Carousel Responsive - Mobile */
    .hero-carousel {
        height: 400px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        opacity: 1;
    }

    .carousel-btn.prev {
        left: 8px;
    }

    .carousel-btn.next {
        right: 8px;
    }

    .carousel-indicators {
        bottom: 12px;
        gap: 5px;
        padding: 6px 10px;
    }

    .indicator {
        width: 6px;
        height: 6px;
    }

    .indicator.active {
        width: 20px;
    }

    .carousel-placeholder span {
        font-size: 48px;
    }

    .carousel-placeholder p {
        font-size: 16px;
    }

    .carousel-placeholder small {
        font-size: 12px;
    }

    .carousel-content h1 {
        font-size: 26px;
    }

    .carousel-content p {
        font-size: 16px;
    }

    .carousel-content .cta-button {
        padding: 14px 32px;
        font-size: 15px;
    }

    header .container {
        height: 60px;
    }

    .header-left {
        max-width: 60%;
    }

    .logo {
        font-size: 18px;
    }

    .logo-text {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .slogan {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-search-btn {
        display: flex;
    }

    .nav-search {
        display: none;
    }

    nav {
        gap: 12px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 8px;
        padding: 80px 30px 40px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.mobile-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
    }

    .nav-menu li a {
        display: block;
        padding: 16px 24px;
        font-size: 18px;
        border-radius: var(--radius-md);
        background: rgba(255,255,255,0.1);
        margin-bottom: 4px;
    }

    .nav-menu li a::after {
        display: none;
    }

    .nav-menu li a:hover,
    .nav-menu li a.active {
        background: rgba(255,255,255,0.2);
    }

    /* Mobile Dropdown Menu */
    .nav-menu .has-dropdown {
        position: relative;
    }

    .nav-menu .has-dropdown > a {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
    }

    .nav-menu .has-dropdown > a .dropdown-arrow {
        transition: var(--transition);
    }

    .nav-menu .has-dropdown.dropdown-open > a .dropdown-arrow {
        transform: rotate(180deg);
    }

    .nav-menu .dropdown-menu {
        position: static;
        min-width: auto;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: rgba(255,255,255,0.1);
        border: none;
        border-radius: var(--radius-md);
        box-shadow: none;
        padding: 0;
        margin-top: 4px;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .nav-menu .has-dropdown.dropdown-open .dropdown-menu {
        max-height: 300px;
        overflow-y: auto;
        padding: 8px;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu .dropdown-menu li {
        margin: 4px 0;
    }

    .nav-menu .dropdown-menu li a {
        padding: 12px 20px;
        font-size: 16px;
        background: rgba(255,255,255,0.1);
        color: rgba(255,255,255,0.9);
        border-radius: var(--radius-sm);
        justify-content: center;
    }

    .nav-menu .dropdown-menu li a:hover {
        background: rgba(255,255,255,0.2);
        color: var(--text-white);
    }

    .lang-switch {
        position: fixed;
        top: 16px;
        right: 120px;
        z-index: 1001;
        background: none;
        border: none;
        padding: 0;
        backdrop-filter: none;
    }

    .lang-switch a {
        display: none;
    }

    .lang-icon-trigger {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        font-size: 18px;
        cursor: pointer;
        border-radius: 8px;
        background: rgba(255,255,255,0.1);
    }

    .lang-switch.dropdown-open a {
        display: block;
        position: absolute;
        right: 0;
        background: #fff;
        color: var(--primary-color);
        padding: 8px 16px;
        border-radius: 6px;
        font-size: 14px;
        font-weight: 600;
        box-shadow: 0 4px 16px rgba(0,0,0,0.15);
        width: 60px;
        text-align: center;
        z-index: 1001;
    }

    .lang-switch.dropdown-open a:first-of-type {
        top: calc(100% + 8px);
    }

    .lang-switch.dropdown-open a:last-of-type {
        top: calc(100% + 48px);
    }

    .lang-switch.dropdown-open a.active {
        background: var(--primary-color);
        color: #fff;
    }

    main {
        margin-top: 60px;
    }

    .hero {
        padding: 60px 16px 80px;
    }

    .hero h1 {
        font-size: 26px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero .cta-button {
        padding: 14px 32px;
        font-size: 15px;
    }

    section {
        padding: 50px 16px;
    }

    section h2 {
        font-size: 22px;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 30px;
    }

    .feature-card {
        padding: 28px 24px;
    }

    .feature-card > div:first-child {
        width: 60px;
        height: 60px;
        font-size: 30px;
    }

    .product-specs li,
    .product-advantages li {
        padding: 14px 16px;
        font-size: 14px;
        gap: 12px;
    }

    .product-specs li::before,
    .product-advantages li::before {
        width: 22px;
        height: 22px;
        font-size: 11px;
    }

    .news-list {
        margin-top: 30px;
    }

    .news-item {
        padding: 20px;
    }

    .news-item h3 a {
        font-size: 16px;
    }

    .contact-form {
        padding: 28px 20px;
        margin-top: 30px;
    }

    input, textarea {
        padding: 12px 16px;
        font-size: 16px; /* Prevent zoom on iOS */
    }

    button[type="submit"] {
        padding: 14px 24px;
        font-size: 15px;
    }

    .float-btn {
        width: 50px;
        height: 50px;
        font-size: 22px;
        bottom: 20px;
        right: 20px;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
        font-size: 18px;
        bottom: 80px;
        right: 20px;
    }

    footer {
        padding: 40px 16px 24px;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }

    .info-box {
        padding: 20px;
    }

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

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
    /* Carousel Responsive - Small Mobile */
    .hero-carousel {
        height: 350px;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
    }

    .carousel-btn.prev {
        left: 6px;
    }

    .carousel-btn.next {
        right: 6px;
    }

    .carousel-indicators {
        bottom: 10px;
        gap: 4px;
        padding: 5px 8px;
    }

    .indicator {
        width: 5px;
        height: 5px;
    }

    .indicator.active {
        width: 16px;
    }

    .carousel-placeholder span {
        font-size: 40px;
    }

    .carousel-placeholder p {
        font-size: 15px;
    }

    .carousel-placeholder small {
        font-size: 11px;
    }

    .carousel-content h1 {
        font-size: 22px;
    }

    .carousel-content p {
        font-size: 14px;
    }

    .carousel-content .cta-button {
        padding: 12px 28px;
        font-size: 14px;
    }

    .container {
        padding: 0 12px;
    }

    .logo {
        font-size: 16px;
        gap: 8px;
    }

    .logo-icon {
        font-size: 22px;
    }

    .hero {
        padding: 50px 12px 70px;
    }

    .hero h1 {
        font-size: 22px;
    }

    .hero p {
        font-size: 14px;
    }

    section {
        padding: 40px 12px;
    }

    section h2 {
        font-size: 20px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .feature-card h3 {
        font-size: 16px;
    }

    .feature-card p {
        font-size: 14px;
    }

    .news-item h3 a {
        font-size: 15px;
    }

    .news-item p {
        font-size: 14px;
    }

    .contact-form {
        padding: 24px 16px;
    }
}

/* ==================== Utility Classes ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mt-60 { margin-top: 60px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }

.mx-auto { margin-left: auto; margin-right: auto; }

.max-w-600 { max-width: 600px; }
.max-w-800 { max-width: 800px; }
.max-w-1000 { max-width: 1000px; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ==================== About Page ==================== */
.about-hero {
    padding: 80px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.about-hero h1 {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.about-hero .hero-desc {
    font-size: clamp(16px, 2.5vw, 20px);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.about-section {
    padding: 60px 24px;
}

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

.about-section.bg-white {
    background: var(--bg-white);
}

.about-section h2 {
    font-size: clamp(22px, 4vw, 32px);
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 32px;
    position: relative;
}

.about-section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    margin: 16px auto 0;
}

.about-section p {
    max-width: 900px;
    margin: 0 auto;
    line-height: 2;
    font-size: 16px;
    color: var(--text-body);
    text-align: justify;
}

/* Investors Grid */
.investors-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.investor-badge {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-white);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.investor-badge:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(0, 102, 204, 0.2);
}

/* Bases Grid */
.bases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.base-card {
    background: var(--bg-card);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.base-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.base-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
}

.base-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.base-card p {
    color: var(--text-light);
    font-size: 15px;
    margin: 0;
}

/* Company Brief Section (Homepage) */
.company-brief-section {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, rgba(0, 180, 216, 0.05) 100%);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.company-brief-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 60px 24px;
}

.company-brief-content h2 {
    font-size: clamp(24px, 4vw, 32px);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.company-brief-content p {
    font-size: 17px;
    line-height: 2;
    color: var(--text-body);
    margin-bottom: 32px;
    text-align: justify;
}

/* About Page Responsive */
@media (max-width: 768px) {
    .about-hero {
        padding: 60px 16px;
    }

    .about-hero h1 {
        font-size: 24px;
    }

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

    .about-section {
        padding: 40px 16px;
    }

    .about-section h2 {
        font-size: 20px;
    }

    .about-section p {
        font-size: 15px;
    }

    .investors-grid {
        gap: 12px;
    }

    .investor-badge {
        padding: 10px 20px;
        font-size: 14px;
    }

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

    .company-brief-content {
        padding: 40px 16px;
    }

    .company-brief-content h2 {
        font-size: 20px;
    }

    .company-brief-content p {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .about-hero {
        padding: 50px 12px;
    }

    .about-hero h1 {
        font-size: 20px;
    }

    .investor-badge {
        padding: 8px 16px;
        font-size: 13px;
    }

    /* Catalog Page Responsive - Small Mobile */
    .catalog-hero {
        padding: 60px 16px;
    }

    .catalog-hero h1 {
        font-size: 24px;
    }

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

    .catalog-section {
        padding: 40px 16px;
    }

    .catalog-section h2 {
        font-size: 20px;
    }

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

    .catalog-image {
        height: 180px;
    }

    .catalog-info {
        padding: 16px;
    }

    .catalog-info h3 {
        font-size: 15px;
    }

    .catalog-info p {
        font-size: 13px;
    }
}

/* ==================== Product Center Page ==================== */
.products-hero {
    padding: 80px 24px 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
}

.products-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.products-hero h1 {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.products-hero .hero-desc {
    font-size: clamp(16px, 2.5vw, 20px);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

/* Product Center Content */
.products-content {
    background: var(--bg-white);
    padding: 0;
}

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

/* Tab Navigation */
.products-tabs {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 24px;
    background: var(--bg-section);
    border-bottom: 3px solid var(--primary-color);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.tab-btn {
    position: relative;
    padding: 14px 28px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-white);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

.tab-btn .badge {
    background: rgba(255,255,255,0.2);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

/* Main Content Area */
.products-main {
    padding: 40px 24px;
}

.category-content {
    min-height: 400px;
}

/* Category Section */
.category-section {
    display: none;
    opacity: 0;
    transition: all 0.4s ease;
    margin-bottom: 48px;
}

.category-section.active {
    display: block;
    opacity: 1;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px 0 16px;
    border-bottom: 2px solid var(--primary-color);
}

.category-title {
    font-size: clamp(20px, 3vw, 26px);
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    flex-wrap: wrap;
}

.category-title .icon {
    font-size: 20px;
}

.category-title .count-badge {
    background: var(--bg-section);
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
}

.category-intro {
    color: var(--text-light);
    font-size: 16px;
    max-width: 800px;
    margin: 0 0 0 32px;
    line-height: 1.8;
}

/* Product Items */
.product-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

/* Updated Catalog Card */
.catalog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.catalog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    border-color: transparent;
}

.card-image {
    width: 100%;
    height: 220px;
    background: var(--bg-section);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 12px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
}

.card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-body h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.card-body p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

/* Responsive Product Center */
@media (max-width: 1024px) {
    .product-items {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .products-hero {
        padding: 60px 16px 40px;
    }

    .products-hero h1 {
        font-size: 24px;
    }

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

    .products-tabs {
        padding: 16px;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-height: 4px;
    }

    .products-tabs::-webkit-scrollbar {
        height: 4px;
        background: #ddd;
        border-radius: 2px;
    }

    .products-tabs:hover::-webkit-scrollbar {
        background: #bbb;
    }

    .tab-btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .products-main {
        padding: 24px 16px;
    }

    .section-header {
        flex-wrap: wrap;
    }

    .category-title {
        font-size: 18px;
    }

    .category-intro {
        margin: 0 0 0 24px;
        grid-column: 1 / -1;
    }

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

    .card-image {
        height: 180px;
    }

    .card-body {
        padding: 16px;
    }

    .card-body h4 {
        font-size: 15px;
    }

    .card-body p {
        font-size: 13px;
    }
}

/* ==================== Catalog Page ==================== */
.catalog-hero {
    padding: 80px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
}

.catalog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.catalog-hero h1 {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
}

.catalog-hero .hero-desc {
    font-size: clamp(16px, 2.5vw, 20px);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.catalog-section {
    padding: 60px 24px;
}

.catalog-section.bg-light {
    background: var(--bg-section);
}

.catalog-section.bg-white {
    background: var(--bg-white);
}

.catalog-section h2 {
    font-size: clamp(24px, 4vw, 32px);
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.catalog-section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    margin: 16px auto 0;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.catalog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.catalog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.catalog-image {
    width: 100%;
    height: 200px;
    background: var(--bg-section);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.catalog-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition);
    padding: 8px;
}
}

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

.catalog-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.catalog-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.catalog-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

/* Catalog Page Responsive */
@media (max-width: 768px) {
    .catalog-hero {
        padding: 60px 16px;
    }

    .catalog-hero h1 {
        font-size: 24px;
    }

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

    .catalog-section {
        padding: 40px 16px;
    }

    .catalog-section h2 {
        font-size: 20px;
    }

    .catalog-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 16px;
    }
}

/* ==================== Print Styles ==================== */
@media print {
    header, footer, .float-btn, .back-to-top, .mobile-menu-btn, .lang-switch {
        display: none !important;
    }

    main {
        margin-top: 0;
    }

    section {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    .hero {
        background: #f0f0f0 !important;
        color: #000 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    a {
        text-decoration: underline;
        color: #000;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10px;
        color: #666;
    }
}

/* ========================================
   服务联系人弹窗
   ======================================== */

.service-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.service-modal-container {
    background: #fff;
    border-radius: 12px;
    width: 780px;
    max-width: 95vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.service-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #666;
    line-height: 1;
    z-index: 1;
    transition: color 0.2s;
}

.service-modal-close:hover {
    color: #333;
}

.service-modal-title {
    padding: 20px 24px 16px;
    font-size: 18px;
    border-bottom: 1px solid #eee;
    margin: 0;
}

.service-modal-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 300px;
}

/* 左侧地区列表 */
.service-region-list {
    width: 140px;
    min-width: 120px;
    list-style: none;
    margin: 0;
    padding: 8px 0;
    border-right: 1px solid #eee;
    overflow-y: auto;
    background: #f8f9fa;
}

.service-region-list li {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    transition: background 0.15s, color 0.15s;
}

.service-region-list li:hover {
    background: #e9ecef;
}

.service-region-list li.active {
    background: var(--primary-color);
    color: #fff;
    font-weight: 600;
}

/* 右侧联系人面板 */
.service-contacts-panel {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-content: flex-start;
}

/* 单个联系人卡片 */
.contact-person-card {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 16px;
    width: 180px;
    text-align: center;
    border: 1px solid #eee;
}

.contact-person-card .qr-wrap {
    width: 120px;
    height: 120px;
    margin: 0 auto 8px;
    overflow: hidden;
}

.contact-person-card .qr-wrap canvas,
.contact-person-card .qr-wrap img {
    width: 120px !important;
    height: 120px !important;
}

.contact-qr-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto 8px;
    background: #e9ecef;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: #666;
    word-break: break-all;
    padding: 8px;
}

.contact-person-name {
    font-weight: 600;
    font-size: 15px;
    margin: 8px 0 2px;
}

.contact-person-position {
    font-size: 12px;
    color: #888;
    margin-bottom: 6px;
}

.contact-person-phone {
    font-size: 13px;
    color: var(--primary-color);
}

.contact-person-phone a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-person-phone a:hover {
    text-decoration: underline;
}

.contact-person-note {
    font-size: 11px;
    color: #aaa;
    margin-top: 4px;
}

.service-empty-hint {
    color: #999;
    padding: 40px 20px;
    text-align: center;
    width: 100%;
}

/* 服务卡片点击提示 */
.service-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* 响应式：768px 以下改为上下布局 */
@media (max-width: 768px) {
    .service-modal-container {
        max-height: 90vh;
        width: 95vw;
    }

    .service-modal-body {
        flex-direction: column;
        min-height: 250px;
    }

    .service-region-list {
        width: 100%;
        min-width: unset;
        border-right: none;
        border-bottom: 1px solid #eee;
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        white-space: nowrap;
        padding: 4px 0;
        flex-shrink: 0;
    }

    .service-region-list li {
        display: inline-block;
        padding: 8px 14px;
    }

    .service-contacts-panel {
        justify-content: center;
    }

    .contact-person-card {
        width: 150px;
    }
}

@media (max-width: 480px) {
    .contact-person-card {
        width: 140px;
        padding: 12px;
    }

    .contact-person-card .qr-wrap {
        width: 100px;
        height: 100px;
    }

    .contact-person-card .qr-wrap canvas,
    .contact-person-card .qr-wrap img {
        width: 100px !important;
        height: 100px !important;
    }

    .contact-qr-placeholder {
        width: 100px;
        height: 100px;
    }
}