/* ============================================================
   万年县君诚网络科技有限公司 - 官网样式表
   大气科技感设计
   ============================================================ */

:root {
    --primary: #0a4d8c;
    --primary-dark: #073d6f;
    --primary-light: #1a6bb5;
    --accent: #00b4d8;
    --accent-glow: #00d4ff;
    --dark: #0a1628;
    --dark-2: #112438;
    --dark-3: #1a3354;
    --text: #333;
    --text-light: #666;
    --text-white: #fff;
    --bg-light: #f5f7fa;
    --bg-gray: #eef2f7;
    --border: #e0e6ed;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: "Microsoft YaHei", "Segoe UI", Tahoma, Arial, sans-serif;
    color: var(--text);
    line-height: 1.8;
    background: #fff;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部信息栏 ===== */
.top-bar {
    background: #06101f;
    color: #8899bb;
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,212,255,0.1);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar i { margin-right: 5px; color: var(--accent); }
.top-right { display: flex; gap: 20px; }
.admin-link { color: var(--accent-glow); }

/* ===== 导航栏 ===== */
.header {
    background: linear-gradient(135deg, #0a1628 0%, #0d2847 100%);
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}
.header.scrolled { box-shadow: 0 4px 25px rgba(0,0,0,0.35); }
.header .container { display: flex; justify-content: space-between; align-items: center; height: 80px; }

.logo a { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    font-size: 36px;
    color: var(--accent-glow);
}
.logo-text { display: flex; flex-direction: column; }
.logo-main { font-size: 22px; font-weight: bold; color: #fff; }
.logo-sub { font-size: 10px; color: rgba(0,212,255,0.7); letter-spacing: 2px; }

.nav ul { display: flex; gap: 5px; }
.nav a {
    display: block;
    padding: 10px 22px;
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    position: relative;
    border-radius: 6px;
    transition: var(--transition);
}
.nav a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-glow), var(--accent));
    transition: var(--transition);
    transform: translateX(-50%);
    border-radius: 2px;
}
.nav a:hover {
    color: #fff;
    background: rgba(0,212,255,0.12);
}
.nav a:hover::after { width: 60%; }
.nav a.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(10,77,140,0.6), rgba(0,180,216,0.3));
    box-shadow: 0 2px 12px rgba(0,180,216,0.25);
}
.nav a.active::after { width: 60%; }

.mobile-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: #fff; }

/* ===== Banner ===== */
.banner {
    height: 500px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 50%, var(--dark-3) 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}
.banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(0,180,216,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(10,77,140,0.2) 0%, transparent 50%);
}
.banner::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 100px;
    background: linear-gradient(to top, #fff, transparent);
    z-index: 1;
}
.banner-content { position: relative; z-index: 2; padding: 0 20px; }
.banner h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,212,255,0.5);
    letter-spacing: 4px;
    animation: fadeInUp 1s ease;
}
.banner p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 30px;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease 0.3s backwards;
}
.banner-btns { animation: fadeInUp 1s ease 0.6s backwards; }
.btn {
    display: inline-block;
    padding: 12px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    letter-spacing: 1px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,180,216,0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 6px 25px rgba(0,180,216,0.6); color: #fff; }
.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { border-color: var(--accent-glow); background: rgba(255,255,255,0.1); color: #fff; }

/* 白色背景页面的分类筛选按钮 */
.filter-btn {
    display: inline-block;
    padding: 8px 22px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid #d0d8e0;
    background: #fff;
    color: #334 !important;
}
.filter-btn:hover {
    border-color: var(--accent);
    background: #f0f7ff;
    color: var(--primary) !important;
}
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff !important;
    border-color: transparent;
    box-shadow: 0 2px 10px rgba(0,180,216,0.3);
}

/* 网格动画背景 */
.grid-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(0,212,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}
@keyframes gridMove {
    from { background-position: 0 0; }
    to { background-position: 50px 50px; }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 粒子点 */
.particle {
    position: absolute;
    width: 4px; height: 4px;
    background: var(--accent-glow);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 4s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(-30px); opacity: 1; }
}

/* ===== 通用区块 ===== */
.section { padding: 70px 0; }
.section-gray { background: var(--bg-light); }
.section-dark { background: var(--dark); color: #ccd; }

.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 32px;
    color: var(--primary);
    font-weight: bold;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}
.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 10px auto 0;
    border-radius: 2px;
}
.section-title p {
    color: var(--text-light);
    font-size: 15px;
    letter-spacing: 1px;
}
.section-dark .section-title h2 { color: var(--accent-glow); }
.section-dark .section-title p { color: #889; }

/* ===== 业务范围 ===== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 25px;
}
.business-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 35px 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 3px solid transparent;
    position: relative;
    overflow: hidden;
}
.business-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
    transform-origin: left;
}
.business-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.business-card:hover::before { transform: scaleX(1); }

.business-icon {
    width: 60px; height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 26px;
    color: #fff;
    transition: var(--transition);
}
.business-card:hover .business-icon { transform: rotateY(180deg); }
.business-card h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 600;
}
.business-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== 关于我们 ===== */
.about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text h2 { font-size: 28px; color: var(--primary); margin-bottom: 20px; }
.about-text p { margin-bottom: 15px; color: var(--text-light); line-height: 2; text-indent: 2em; }
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 30px; }
.stat-item { text-align: center; }
.stat-num { font-size: 36px; font-weight: bold; color: var(--accent); }
.stat-label { font-size: 13px; color: var(--text-light); }

.about-visual {
    position: relative;
    height: 400px;
    border-radius: var(--radius);
    overflow: hidden;
    background: linear-gradient(135deg, var(--dark), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-visual i {
    font-size: 180px;
    color: rgba(0,212,255,0.2);
    animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.1); opacity: 0.4; }
}

/* ===== 新闻列表 ===== */
.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.news-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.news-card-body { padding: 25px; }
.news-date {
    display: inline-block;
    padding: 3px 12px;
    background: var(--bg-gray);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}
.news-card h3 {
    font-size: 17px;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card:hover h3 { color: var(--primary); }
.news-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card .read-more { display: inline-block; margin-top: 15px; font-size: 14px; color: var(--primary); font-weight: 500; }
.news-card .news-category {
    display: inline-block;
    padding: 2px 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 12px;
    border-radius: 4px;
    margin-right: 8px;
}

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 5px; margin-top: 40px; }
.pagination a, .pagination span {
    display: inline-block;
    padding: 8px 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    color: var(--text);
    transition: var(--transition);
}
.pagination a:hover, .pagination .current {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== 案例展示 ===== */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 25px; }
.case-card {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: #fff;
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.case-img {
    height: 200px;
    background: linear-gradient(135deg, var(--dark-3), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.3);
    font-size: 60px;
}
.case-body { padding: 20px; }
.case-body h3 { font-size: 16px; color: var(--text); margin-bottom: 8px; }
.case-body p { font-size: 13px; color: var(--text-light); }
.case-category {
    display: inline-block;
    padding: 2px 10px;
    background: var(--bg-gray);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 8px;
}

/* ===== 联系我们 ===== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info h3 { font-size: 22px; color: var(--primary); margin-bottom: 20px; }
.contact-info ul li { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 20px; }
.contact-info ul li i {
    width: 40px; height: 40px;
    line-height: 40px;
    text-align: center;
    background: var(--bg-gray);
    border-radius: 50%;
    color: var(--primary);
    font-size: 16px;
    flex-shrink: 0;
}
.contact-info ul li .info-label { font-size: 13px; color: var(--text-light); }
.contact-info ul li .info-value { font-size: 16px; color: var(--text); font-weight: 500; }

.contact-form { background: #fff; padding: 30px; border-radius: var(--radius); box-shadow: var(--shadow); }
.contact-form .form-group { margin-bottom: 20px; }
.contact-form label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text); }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,180,216,0.1); }
.contact-form textarea { resize: vertical; min-height: 120px; }

/* ===== 新闻详情 ===== */
.news-detail { background: #fff; padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); }
.news-detail h1 { font-size: 26px; color: var(--text); margin-bottom: 15px; line-height: 1.5; }
.news-meta { font-size: 14px; color: var(--text-light); margin-bottom: 25px; padding-bottom: 15px; border-bottom: 1px solid var(--border); display: flex; gap: 20px; flex-wrap: wrap; }
.news-meta span i { margin-right: 5px; }
.news-content { font-size: 16px; line-height: 2; color: var(--text); }
.news-content p { margin-bottom: 15px; }
.news-content h2, .news-content h3 { margin: 25px 0 15px; color: var(--primary); }
.news-content table { width: 100%; border-collapse: collapse; margin: 15px 0; }
.news-content table td, .news-content table th { border: 1px solid var(--border); padding: 8px 12px; }
.news-back { margin-top: 30px; }
.news-related { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--border); }
.news-related h3 { font-size: 18px; margin-bottom: 15px; color: var(--primary); }
.news-related ul li { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.news-related ul li a { color: var(--text); }
.news-related ul li a:hover { color: var(--primary); }

/* ===== 页面Banner ===== */
.page-banner {
    height: 250px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(0,212,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.06) 1px, transparent 1px);
    background-size: 40px 40px;
}
.page-banner h1 { font-size: 36px; font-weight: bold; letter-spacing: 3px; position: relative; z-index: 1; }
.page-banner .breadcrumb { font-size: 14px; margin-top: 10px; opacity: 0.8; position: relative; z-index: 1; }
.page-banner .breadcrumb a { color: var(--accent-glow); }

/* ===== 底部 ===== */
.footer { background: var(--dark); color: #99a; padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 40px; padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.footer-title { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; }
.footer-title i { margin-right: 8px; color: var(--accent); }
.footer-intro { font-size: 13px; line-height: 1.8; }
.footer-links li, .footer-contact li { padding: 5px 0; font-size: 13px; }
.footer-links a { color: #99a; }
.footer-links a:hover { color: var(--accent-glow); }
.footer-contact li { display: flex; gap: 10px; }
.footer-contact i { color: var(--accent); margin-top: 3px; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 13px; }
.footer-bottom a { color: #99a; }
.footer-bottom a:hover { color: var(--accent-glow); }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .nav { display: none; position: fixed; top: 80px; left: 0; right: 0; background: linear-gradient(135deg, #0a1628 0%, #0d2847 100%); box-shadow: var(--shadow-lg); padding: 10px 0; }
    .nav.open { display: block; }
    .nav ul { flex-direction: column; }
    .mobile-toggle { display: block; }
    .banner h1 { font-size: 32px; }
    .banner p { font-size: 16px; }
    .about-wrap, .contact-wrap { grid-template-columns: 1fr; }
    .about-visual { display: none; }
    .news-list { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .top-right { gap: 10px; }
    .banner { height: 350px; }
    .banner h1 { font-size: 24px; }
    .banner p { font-size: 14px; }
    .section { padding: 40px 0; }
    .section-title h2 { font-size: 24px; }
    .business-grid { grid-template-columns: 1fr; }
    .news-detail { padding: 20px; }
    .news-detail h1 { font-size: 20px; }
}