/* =============================== 
   氙境科技官网 全局样式（参考corerain.com：蓝白现代风，渐变背景、阴影hover）
=================================*/

:root {
    --primary: #0066FF;
    /* 主蓝，参考corerain */
    --secondary: #F8FAFE;
    /* 浅灰白 */
    --accent: #00D4FF;
    /* 渐变蓝 */
    --dark: #1A1D29;
    /* 深色文本 */
    --gradient: linear-gradient(135deg, #0066FF 0%, #00D4FF 100%);
    --shadow: 0 15px 35px rgba(0, 102, 255, 0.12);
    --shadow-hover: 0 25px 60px rgba(0, 102, 255, 0.25);
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    color: var(--dark);
    line-height: 1.7;
    background: #FFFFFF;
    padding-top: 70px;
    /* 为固定导航栏预留空间 */
}

/* 首页（Type 1架构）不需要上边距 */
body.home-page {
    padding-top: 0;
}

.navbar {
    background: white;
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.hero-section {
    background: var(--gradient);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
    color: white;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.08)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.product-card,
.card {
    background: white;
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.product-card:hover,
.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.btn-gradient {
    background: var(--gradient);
    color: white;
    border: none;
}

.btn-outline-custom {
    border-color: var(--primary);
    color: var(--primary);
}

footer {
    background: var(--dark);
    color: #aaa;
    padding: 24px 0;
    font-size: 14px;
}

footer a {
    color: #aaa;
    text-decoration: none;
}

footer a:hover {
    color: white;
}

/* Hover dropdown for navigation (参考corerain下拉菜单) */
.hover-dropdown .dropdown-menu {
    display: none;
    position: absolute;
    min-width: 200px;
    border: none;
    box-shadow: var(--shadow);
    background: white;
}

.hover-dropdown:hover .dropdown-menu {
    display: block;
}