/* ============================================
   上海港陆信息科技官网 - CSS样式表
   ============================================ */

/* CSS变量定义 */
:root {
    /* 颜色系统 - 高端商务蓝金 */
    --primary-color: #1E6FFF;
    --primary-dark: #0B4FCC;
    --primary-light: #E8F1FF;
    --secondary-color: #FF6B35;
    --secondary-dark: #E55A2B;
    --accent-color: #00C9A7;
    --gold-color: #C9A227;
    --gold-light: #F5E6B8;
    
    /* 辅助色 */
    --success-color: #52C41A;
    --warning-color: #FAAD14;
    --danger-color: #FF4D4F;
    
    /* 中性色 */
    --text-primary: #0F1729;
    --text-secondary: #4A5568;
    --text-light: #8896AB;
    --border-color: #E2E8F0;
    --bg-light: #F4F7FC;
    --bg-dark: #0B1D3A;
    
    /* 间距系统 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.16);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --gradient-primary: linear-gradient(135deg, #1E6FFF 0%, #00C9A7 100%);
    --gradient-gold: linear-gradient(135deg, #C9A227 0%, #E8C547 100%);
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.4);
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

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

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   头部导航
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 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 transparent;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: 0 4px 30px rgba(11, 29, 58, 0.08);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--bg-dark), var(--primary-color));
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(30, 111, 255, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
}

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

.logo-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.logo-en {
    font-size: 11px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 导航 */
.nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--spacing-md) 0;
    transition: color var(--transition-fast);
}

.nav-item > a:hover,
.nav-item.active > a {
    color: var(--primary-color);
}

.nav-item .arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

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

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

/* 头部操作按钮 */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.hotline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 14px;
    color: var(--text-secondary);
}

.hotline-icon {
    font-size: 16px;
}

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

.btn-consult {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.btn-consult:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 999;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav ul {
    padding: var(--spacing-lg);
}

.mobile-nav > ul > li {
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav > ul > li > a {
    display: block;
    padding: var(--spacing-md) 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
}

.mobile-submenu {
    padding-left: var(--spacing-lg);
    background: var(--bg-light);
}

.mobile-submenu li a {
    display: block;
    padding: var(--spacing-sm) 0;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(160deg, #F0F5FF 0%, #E8F4FD 40%, #F8FAFF 100%);
    z-index: -1;
    overflow: hidden;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: floatOrb 12s ease-in-out infinite;
}

.hero-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(30, 111, 255, 0.25);
    top: -20%;
    right: -10%;
}

.hero-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(0, 201, 167, 0.2);
    bottom: -10%;
    left: -5%;
    animation-delay: -6s;
}

.hero-grid {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-image:
        linear-gradient(rgba(30, 111, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 111, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -20px) scale(1.05); }
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    font-size: 13px;
    color: var(--text-secondary);
}

.hero-trust span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.hero-visual {
    position: relative;
    min-height: 380px;
}

.hero-card {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 64px rgba(11, 29, 58, 0.12);
}

.hero-card-main {
    padding: var(--spacing-lg);
}

.hero-card-header {
    display: flex;
    gap: 6px;
    margin-bottom: var(--spacing-md);
}

.hero-card-header .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
}

.hero-card-header .dot:nth-child(1) { background: #FF5F57; }
.hero-card-header .dot:nth-child(2) { background: #FFBD2E; }
.hero-card-header .dot:nth-child(3) { background: #28CA41; }

.hero-metric .label {
    font-size: 12px;
    color: var(--text-light);
    display: block;
}

.hero-metric .value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.hero-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 120px;
    margin-top: var(--spacing-lg);
}

.hero-chart .bar {
    flex: 1;
    background: var(--primary-light);
    border-radius: 6px 6px 0 0;
    transition: height 0.6s ease;
}

.hero-chart .bar.active {
    background: var(--gradient-primary);
}

.hero-card-float {
    position: absolute;
    bottom: 20px;
    right: -20px;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: floatCard 4s ease-in-out infinite;
}

.hero-card-float strong {
    font-size: 24px;
    color: var(--primary-color);
    display: block;
}

.hero-card-float small {
    font-size: 12px;
    color: var(--text-light);
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.btn-glow {
    box-shadow: 0 8px 32px rgba(30, 111, 255, 0.35);
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230066CC' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, #fff, transparent);
}

.hero-content {
    text-align: left;
    max-width: 560px;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    justify-content: flex-start;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ============================================
   按钮样式
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: #fff;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #fff;
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline-light:hover {
    background: #fff;
    color: var(--primary-color);
}

.btn-full {
    width: 100%;
}

/* ============================================
   数据统计
   ============================================ */
.stats {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #132D5C 50%, var(--primary-dark) 100%);
    padding: var(--spacing-3xl) 0;
    margin-top: -60px;
    position: relative;
    z-index: 10;
    border-radius: var(--radius-xl);
    margin-left: var(--spacing-lg);
    margin-right: var(--spacing-lg);
    box-shadow: 0 20px 60px rgba(11, 29, 58, 0.25);
}

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

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-number::after {
    content: attr(data-suffix);
    font-size: 36px;
}

.stat-number[data-suffix=""]::after,
.stat-number[data-suffix="%"]::after {
    font-size: 28px;
}

.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   通用区块样式
   ============================================ */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-dark {
    background: var(--bg-dark);
    color: #fff;
}

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

.section-primary {
    background: linear-gradient(135deg, var(--primary-color), #0055AA);
    color: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary-color);
    background: var(--primary-light);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-dark .section-title,
.section-primary .section-title {
    color: #fff;
}

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

.section-dark .section-subtitle,
.section-primary .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   产品类目
   ============================================ */
.product-category {
    margin-bottom: var(--spacing-3xl);
}

.product-category:last-child {
    margin-bottom: 0;
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.category-icon {
    font-size: 48px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
}

.category-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.category-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============================================
   产品卡片
   ============================================ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 48px rgba(11, 29, 58, 0.12);
    border-color: rgba(30, 111, 255, 0.2);
}

.product-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-content {
    padding: var(--spacing-lg);
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.product-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tag {
    padding: 4px 10px;
    font-size: 12px;
    color: var(--primary-color);
    background: var(--primary-light);
    border-radius: var(--radius-full);
}

.tag-orange {
    background: rgba(255, 107, 53, 0.1);
    color: var(--secondary-color);
}

.product-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
}

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

/* ============================================
   解决方案
   ============================================ */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.solution-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.solution-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
}

.solution-icon {
    font-size: 56px;
    margin-bottom: var(--spacing-lg);
}

.solution-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.solution-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.solution-features {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.solution-features li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.solution-features li:last-child {
    border-bottom: none;
}

/* ============================================
   服务支持
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 56px;
    margin-bottom: var(--spacing-lg);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.service-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--primary-light);
    border-radius: var(--radius-xl);
}

.service-cta p {
    font-size: 16px;
    color: var(--text-secondary);
}

.service-cta strong {
    font-size: 24px;
    color: var(--primary-color);
}

.service-time {
    font-size: 14px !important;
    margin-top: var(--spacing-sm);
}

/* ============================================
   合作伙伴
   ============================================ */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-lg);
}

.partner-logo {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.partner-logo:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.partner-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ============================================
   关于我们
   ============================================ */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.about-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
}

.feature-text h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-text p {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 0;
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

/* ============================================
   新闻资讯
   ============================================ */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.news-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    transition: all var(--transition-normal);
}

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

.news-date {
    width: 80px;
    padding: var(--spacing-md);
    background: var(--primary-color);
    color: #fff;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-date .day {
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
}

.news-date .month {
    font-size: 11px;
    margin-top: var(--spacing-xs);
    opacity: 0.8;
}

.news-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.news-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-color);
}

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

/* ============================================
   联系方式
   ============================================ */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.contact-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-md);
}

.contact-icon {
    font-size: 24px;
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* 咨询表单 */
.contact-form {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.form-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

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

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn-primary {
    margin-top: var(--spacing-md);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--bg-dark);
    color: #fff;
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

.footer-logo .logo-icon {
    background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.8));
    color: var(--primary-color);
}

.footer-logo .logo-name {
    color: #fff;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
    color: #fff;
}

/* ============================================
   返回顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: #fff;
    font-size: 20px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-grid,
    .solutions-grid,
    .services-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-image {
        order: -1;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-col:first-child {
        grid-column: span 3;
    }
}

@media (max-width: 768px) {
    .header-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 15px;
    }
    
    .stats-grid,
    .product-grid,
    .solutions-grid,
    .services-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-col:first-child {
        grid-column: span 2;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
    }
    
    .stats {
        margin-top: 0;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .category-header {
        flex-direction: column;
        text-align: center;
    }
    
    .partners-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-col:first-child {
        grid-column: span 1;
    }
}

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

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

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

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

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

/* 加载状态 */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   高端增强组件
   ============================================ */
.page-loader {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 10000;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    display: none !important;
}

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

.loader-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 22px;
    animation: pulse 1.5s ease infinite;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: rgba(255,255,255,0.15);
    border-radius: 3px;
    margin: 0 auto var(--spacing-md);
    overflow: hidden;
}

.loader-bar span {
    display: block;
    height: 100%;
    width: 40%;
    background: var(--gradient-primary);
    border-radius: 3px;
    animation: loaderSlide 1.2s ease infinite;
}

@keyframes loaderSlide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

.loader-text {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.2em;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 10001;
    width: 0%;
    transition: width 0.1s linear;
}

.why-us {
    background: #fff;
    padding: var(--spacing-3xl) 0;
}

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

.why-card {
    padding: var(--spacing-xl);
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    border: 1px solid transparent;
    transition: all var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.why-card.featured {
    background: var(--gradient-primary);
    color: #fff;
    transform: scale(1.02);
}

.why-card.featured h3,
.why-card.featured p { color: #fff; }

.why-icon {
    font-size: 40px;
    margin-bottom: var(--spacing-md);
}

.why-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.why-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.product-tab {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.product-tab:hover,
.product-tab.active {
    color: #fff;
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(30, 111, 255, 0.3);
}

.product-category {
    scroll-margin-top: 100px;
    transition: opacity 0.3s ease;
}

.product-category.highlight {
    animation: highlightPulse 1.5s ease;
}

@keyframes highlightPulse {
    0%, 100% { box-shadow: none; }
    50% { box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.2); }
}

.partners-marquee {
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.partners-track {
    display: flex;
    gap: var(--spacing-lg);
    animation: marquee 30s linear infinite;
    width: max-content;
}

.partners-track:hover { animation-play-state: paused; }

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

.float-consult {
    position: fixed;
    bottom: 100px;
    right: 30px;
    z-index: 99;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: var(--radius-full);
    box-shadow: 0 8px 32px rgba(30, 111, 255, 0.4);
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition-fast);
    animation: consultPulse 3s ease infinite;
}

.float-consult:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(30, 111, 255, 0.5);
}

@keyframes consultPulse {
    0%, 100% { box-shadow: 0 8px 32px rgba(30, 111, 255, 0.4); }
    50% { box-shadow: 0 8px 40px rgba(30, 111, 255, 0.6), 0 0 0 8px rgba(30, 111, 255, 0.1); }
}

.toast-container {
    position: fixed;
    top: 90px;
    right: 24px;
    z-index: 10002;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-color);
    font-size: 14px;
    animation: toastIn 0.3s ease;
    max-width: 320px;
}

.toast.success { border-left-color: var(--accent-color); }
.toast.error { border-left-color: var(--danger-color); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.modal-overlay {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 10003;
    background: rgba(11, 29, 58, 0.6);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #fff;
    border-radius: var(--radius-xl);
    max-width: 520px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-lg { max-width: 720px; }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-light);
    font-size: 24px;
    line-height: 1;
    color: var(--text-secondary);
    z-index: 1;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.modal-body { padding: var(--spacing-2xl); }

.modal-product-img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.modal-product-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.modal-product-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 1024px) {
    .hero-layout { grid-template-columns: 1fr; text-align: center; }
    .hero-content { max-width: 100%; text-align: center; margin: 0 auto; }
    .hero-actions, .hero-trust { justify-content: center; }
    .hero-visual { display: none; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .why-card.featured { transform: none; }
    .stats { margin-left: var(--spacing-md); margin-right: var(--spacing-md); }
}

@media (max-width: 768px) {
    .why-grid { grid-template-columns: 1fr; }
    .float-consult-text { display: none; }
    .float-consult { padding: 14px; border-radius: 50%; }
}