/* 全局变量与重置 */
:root {
    --primary-color: #0056b3; /* 深蓝色 */
    --accent-color: #ff9800; /* 朱鹮橙/活力色 */
    --text-dark: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --bg-gradient: linear-gradient(135deg, #e0f7fa 0%, #e8f5e9 100%);
}

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

body {
    font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--bg-gradient);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* 背景装饰 Blob */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: #81d4fa;
    animation: float 20s infinite alternate;
}

.blob-2 {
    bottom: 20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: #ffcc80;
    animation: float 25s infinite alternate-reverse;
}

.blob-3 {
    top: 40%;
    left: 30%;
    width: 400px;
    height: 400px;
    background: #a5d6a7;
    animation: float 15s infinite alternate;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 通用样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* 毛玻璃卡片通用样式 */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.25);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 0 1px 3px rgba(255, 255, 255, 0.9);
}

.nav-links {
    display: flex;
    gap: 35px;
}

.nav-links a {
    font-weight: 600;
    color: #1a1a1a;
    transition: color 0.3s;
    position: relative;
    font-size: 1.05rem;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: #1a1a1a;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* Hero Section - Banner */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    padding-top: 60px;
    
    background-image: url('https://img10.360buyimg.com/imgzone/jfs/t1/416657/16/13544/2064706/69dc520dFf2f3d66e/0083000cac8767dd.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 86, 179, 0.6) 0%, rgba(0, 30, 60, 0.5) 100%);
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    padding: 60px 40px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    color: var(--white);
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 300;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}

.hero .quote {
    font-style: italic;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    font-size: 1.1rem;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    background: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

/* 品牌故事卡片 */
.icon-box {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 科普部分 */
.content-block h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.check-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.check-list i {
    color: var(--accent-color);
}

/* 表格样式 */
.comparison-table-wrapper {
    margin-top: 50px;
    padding: 40px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.comparison-table th, .comparison-table td {
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.comparison-table th {
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-color);
    font-weight: bold;
}

.highlight-col {
    background: rgba(255, 152, 0, 0.1);
    font-weight: bold;
    color: #d84315;
}

/* 产品矩阵 */
.grid-products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.product-card {
    text-align: center;
    padding: 20px;
}

.product-img-container {
    width: 100%;
    height: 220px;
    background: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 修改为 cover 填满，如果是透明背景图可以用 contain */
    transition: transform 0.3s ease;
}

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

.product-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.product-card p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 品牌实力 */
.strength-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.strength-item h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    padding: 60px 0 20px;
    margin-top: 50px;
    border-top: 1px solid var(--glass-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-info h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.footer-info p {
    margin-bottom: 10px;
    color: var(--text-light);
}

.footer-info i {
    width: 20px;
    color: var(--accent-color);
}

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

.footer-qr h3 {
    margin-bottom: 20px;
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-img {
    width: 160px;
    height: 160px;
    border-radius: 10px;
    border: 2px solid #eee;
    padding: 10px;
    background: white;
    margin-bottom: 15px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.1);
    font-size: 0.9rem;
    color: #888;
}

.footer-bottom a {
    color: #888;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: right 0.3s ease;
    }

    .nav-links.active {
        right: 0;
    }

    .menu-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.2rem;
    }

    .grid-2, .strength-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 0.85rem;
    }
    
    .hero-content {
        padding: 40px 20px;
        margin: 0 15px;
    }
    
    .nav-links a {
        font-size: 1.3rem;
        font-weight: 600;
        color: #1a1a1a;
        text-shadow: none;
    }

    .product-img-container {
        height: 180px;
    }
}

/* 动画类 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.4s; }
.fade-in:nth-child(4) { animation-delay: 0.6s; }

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

.table-responsive {
    overflow-x: auto;
}