/* ==================== 蓝白主题全局变量 ==================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0ea5e9;
    --accent: #38bdf8;
    --bg-primary: #f4f8ff;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: rgba(37, 99, 235, 0.14);
    --glow-color: rgba(37, 99, 235, 0.18);
    --gradient-main: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
    --shadow-card: 0 10px 30px rgba(37, 99, 235, 0.08);
    --shadow-glow: 0 0 24px rgba(37, 99, 235, 0.18);
}

/* Orbitron 本地字体（数字展示用） */
@font-face {
    font-family: 'Orbitron';
    font-style: normal;
    font-weight: 400 900;
    font-display: swap;
    src: url(fonts/orbitron.woff2) format('woff2');
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 14px 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 18px rgba(37, 99, 235, 0.06);
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 20px;
    display: flex; justify-content: space-between; align-items: center;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 800; color: var(--text-primary); }
.logo-icon { color: var(--primary); font-size: 1.5rem; }
.logo-img { height: 34px; width: auto; object-fit: contain; border-radius: 6px; }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
    padding: 8px 14px; border-radius: 10px; font-size: 0.95rem;
    color: var(--text-secondary); transition: all 0.25s ease;
}
.nav-links a:hover { color: var(--primary); background: rgba(37, 99, 235, 0.06); }
.nav-links a.active { color: #fff; background: var(--gradient-main); box-shadow: var(--shadow-glow); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; }

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 26px; border-radius: 12px; font-weight: 600;
    font-size: 0.98rem; cursor: pointer; border: none; transition: all 0.3s ease;
}
.btn-primary { background: var(--gradient-main); color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28); }
.btn-secondary { background: #fff; color: var(--primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: rgba(37, 99, 235, 0.06); }
.btn-full { width: 100%; justify-content: center; }

/* ==================== 页面通用区块 ==================== */
.page-wrap { padding-top: 86px; }
.section { padding: 80px 0; }
.section.alt { background: var(--bg-secondary); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.section-tag {
    display: inline-block; padding: 5px 16px; border: 1px solid var(--border-color);
    border-radius: 50px; font-size: 0.8rem; letter-spacing: 2px; color: var(--primary);
    background: rgba(37, 99, 235, 0.06); margin-bottom: 16px;
}
.section-title { font-size: 2.1rem; font-weight: 800; margin-bottom: 14px; }
.section-desc { color: var(--text-secondary); font-size: 1.05rem; }

/* ==================== 首页 hero ==================== */
.hero {
    display: flex; align-items: center; gap: 40px; min-height: 88vh;
    padding: 120px 0 60px; max-width: 1200px; margin: 0 auto;
}
.hero-content { flex: 1; }
.hero-badge {
    display: inline-block; padding: 8px 18px; border-radius: 50px;
    background: rgba(37, 99, 235, 0.08); color: var(--primary);
    font-size: 0.9rem; margin-bottom: 22px;
}
.hero-title { font-size: 3.4rem; font-weight: 800; line-height: 1.15; margin-bottom: 20px; }
.hero-slogan {
    font-size: 1.9rem; font-weight: 800; letter-spacing: 4px; line-height: 1.3;
    margin-bottom: 18px;
    background: linear-gradient(135deg, #1d4ed8 0%, #0ea5e9 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.stat-item { display: flex; flex-direction: column; }
.stat-number { font-family: 'Orbitron', sans-serif; font-size: 2.4rem; font-weight: 700; color: var(--primary); }
.stat-plus { color: var(--secondary); }
.stat-label { color: var(--text-secondary); font-size: 0.95rem; }
.hero-visual { flex: 1; display: flex; justify-content: center; }
.tech-sphere { position: relative; width: 320px; height: 320px; display: flex; align-items: center; justify-content: center; }
.sphere-ring { position: absolute; border: 2px solid var(--border-color); border-radius: 50%; }
.ring-1 { width: 320px; height: 320px; border-color: rgba(37, 99, 235, 0.2); animation: spin 18s linear infinite; }
.ring-2 { width: 240px; height: 240px; border-color: rgba(14, 165, 233, 0.25); animation: spin 12s linear infinite reverse; }
.ring-3 { width: 160px; height: 160px; border-color: rgba(37, 99, 235, 0.3); animation: spin 8s linear infinite; }
.sphere-core {
    width: 110px; height: 110px; border-radius: 50%;
    background: var(--gradient-main); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Orbitron', sans-serif; font-size: 2rem; font-weight: 700;
    box-shadow: var(--shadow-glow);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==================== 首页模块导航卡片 ==================== */
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.module-card {
    background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 18px;
    padding: 28px 24px; transition: all 0.3s ease; display: block; color: var(--text-primary);
}
.module-card:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: var(--shadow-card); }
.module-icon { font-size: 1.8rem; margin-bottom: 14px; }
.module-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.module-card p { color: var(--text-secondary); font-size: 0.92rem; }

/* ==================== 关于我们 ==================== */
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 50px; }
.about-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 30px; box-shadow: var(--shadow-card); }
.about-card:hover { transform: translateY(-6px); border-color: var(--primary); }
.card-icon { font-size: 2rem; margin-bottom: 14px; }
.about-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.about-card p { color: var(--text-secondary); }
.about-showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.showcase-image .image-frame {
    position: relative; border-radius: 18px; border: 1px solid var(--border-color);
    background: linear-gradient(135deg, rgba(37,99,235,0.06), rgba(14,165,233,0.06));
    min-height: 280px; display: flex; align-items: center; justify-content: center;
}
.placeholder-img { text-align: center; color: var(--text-secondary); padding: 30px; }
.placeholder-icon { display: block; font-size: 3rem; margin-bottom: 12px; }
.showcase-content h3 { font-size: 1.5rem; margin-bottom: 16px; }
.showcase-content p { color: var(--text-secondary); margin-bottom: 20px; }
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-list li { display: flex; align-items: center; gap: 10px; color: var(--text-primary); }
.check-icon { color: #fff; background: var(--primary); width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 0.8rem; flex-shrink: 0; }

/* ==================== 服务范围 ==================== */
.services-grid, .cases-grid, .news-grid, .yuqing-grid { display: grid; gap: 24px; }
.services-grid { grid-template-columns: repeat(3, 1fr); }
.service-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 30px; transition: all 0.3s ease; position: relative; }
.service-card:hover, .case-card:hover, .news-card:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: var(--shadow-card); }
.service-card.featured { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.featured-badge { position: absolute; top: 16px; right: 16px; background: var(--gradient-main); color: #fff; font-size: 0.75rem; padding: 4px 12px; border-radius: 50px; }
.service-icon { color: var(--primary); margin-bottom: 16px; }
.service-icon svg { width: 48px; height: 48px; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.service-card p { color: var(--text-secondary); margin-bottom: 16px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tags li { background: rgba(37, 99, 235, 0.08); color: var(--primary); font-size: 0.8rem; padding: 4px 12px; border-radius: 50px; }

/* ==================== 解决方案 tabs ==================== */
.solutions-tabs { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.tab-btn { padding: 10px 22px; border-radius: 12px; border: 1px solid var(--border-color); background: #fff; color: var(--text-secondary); cursor: pointer; font-size: 0.95rem; transition: all 0.25s ease; }
.tab-btn.active { background: var(--gradient-main); color: #fff; border-color: transparent; box-shadow: var(--shadow-glow); }
.solution-panel { display: none; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 18px; padding: 40px; }
.solution-panel.active { display: grid; }
.panel-visual { display: flex; justify-content: center; }
.visual-icon { font-size: 5rem; }
.panel-info h3 { font-size: 1.5rem; margin-bottom: 14px; }
.panel-info p { color: var(--text-secondary); margin-bottom: 18px; }
.solution-features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.solution-features li { color: var(--text-primary); padding-left: 22px; position: relative; }
.solution-features li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }

/* ==================== 舆情监测 ==================== */
.yuqing-grid { grid-template-columns: repeat(4, 1fr); margin-top: 40px; }

/* ==================== GEO ==================== */
.geo-coop { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin: -10px 0 50px; }
.geo-coop-tag { padding: 5px 14px; border: 1px solid var(--border-color); border-radius: 50px; font-size: 0.8rem; color: var(--text-secondary); }
.geo-coop-name { font-size: 1.25rem; font-weight: 700; }
.geo-coop-x { font-weight: 700; color: var(--secondary); }
.geo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.geo-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 20px; padding: 35px 30px; box-shadow: var(--shadow-card); }
.geo-card-tag { display: inline-block; padding: 5px 14px; background: rgba(37, 99, 235, 0.1); border-radius: 50px; font-size: 0.8rem; color: var(--primary); margin-bottom: 24px; }
.geo-metric { display: flex; flex-direction: column; gap: 18px; }
.geo-metric-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; }
.geo-metric-label { min-width: 85px; font-size: 0.95rem; color: var(--text-secondary); }
.geo-metric-before { font-family: 'Orbitron', sans-serif; color: var(--text-secondary); }
.geo-metric-arrow { color: var(--primary); }
.geo-metric-after { font-family: 'Orbitron', sans-serif; font-size: 1.5rem; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.geo-advantage { margin-top: 70px; }
.geo-subtitle { text-align: center; font-size: 1.4rem; margin-bottom: 30px; }
.geo-advantage-list { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.geo-advantage-list li { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 30px 18px; text-align: center; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; font-size: 0.95rem; transition: all 0.3s ease; }
.geo-advantage-list li:hover { transform: translateY(-6px); border-color: var(--primary); color: var(--primary); }
.geo-advantage-index { font-family: 'Orbitron', sans-serif; color: var(--primary); }
.geo-scope { margin-top: 30px; text-align: center; font-size: 0.95rem; color: var(--text-secondary); }

/* ==================== 成功案例 ==================== */
.cases-grid { grid-template-columns: repeat(4, 1fr); }
.case-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; overflow: hidden; transition: all 0.3s ease; }
.case-image { background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(14,165,233,0.08)); display: flex; align-items: center; justify-content: center; height: 120px; }
.case-placeholder { font-size: 2.6rem; }
.case-content { padding: 22px; }
.case-category { display: inline-block; font-size: 0.78rem; color: var(--primary); background: rgba(37,99,235,0.08); padding: 3px 12px; border-radius: 50px; margin-bottom: 10px; }
.case-content h4 { font-size: 1.15rem; margin-bottom: 8px; }
.case-content p { color: var(--text-secondary); font-size: 0.9rem; }

/* ==================== 新闻动态 ==================== */
.news-grid { grid-template-columns: repeat(2, 1fr); }
.news-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; overflow: hidden; transition: all 0.3s ease; display: flex; }
.news-image { width: 110px; flex-shrink: 0; background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(14,165,233,0.1)); display: flex; align-items: center; justify-content: center; font-size: 2.4rem; }
.news-body { padding: 20px 22px; flex: 1; }
.news-date { color: var(--primary); font-size: 0.85rem; }
.news-content h3 { font-size: 1.05rem; margin: 8px 0; }
.news-content p { color: var(--text-secondary); font-size: 0.88rem; }
.news-tag { display: inline-block; margin-top: 10px; font-size: 0.75rem; color: var(--secondary); background: rgba(14,165,233,0.1); padding: 3px 10px; border-radius: 50px; }

.news-hint { text-align: center; color: var(--text-muted); padding: 40px 0; font-size: 0.95rem; }

/* ==================== 合作伙伴 ==================== */
.partners-marquee { overflow: hidden; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); padding: 24px 0; }
.marquee-track { display: flex; gap: 40px; width: max-content; animation: marquee 22s linear infinite; }
.partner-item { font-size: 1.3rem; font-weight: 700; color: var(--text-secondary); white-space: nowrap; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ==================== 联系我们 ==================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.info-card { display: flex; gap: 16px; align-items: flex-start; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 14px; padding: 22px; margin-bottom: 16px; }
.info-icon { color: var(--primary); flex-shrink: 0; }
.info-icon svg { width: 26px; height: 26px; }
.info-text h4 { font-size: 1rem; margin-bottom: 4px; }
.info-text p { color: var(--text-secondary); font-size: 0.92rem; }
.contact-form-wrapper { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 18px; padding: 32px; box-shadow: var(--shadow-card); }
.contact-form h3 { margin-bottom: 20px; }
.form-group { position: relative; margin-bottom: 22px; }
.form-group input, .form-group textarea {
    width: 100%; padding: 14px 16px; border: 1px solid var(--border-color); border-radius: 10px;
    font-size: 0.95rem; background: #fff; color: var(--text-primary); outline: none; transition: border 0.25s ease;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group label {
    position: absolute; left: 16px; top: 14px; color: var(--text-secondary);
    pointer-events: none; transition: all 0.2s ease; background: #fff; padding: 0 4px;
}
.form-group input:focus + label, .form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label, .form-group textarea:not(:placeholder-shown) + label {
    top: -10px; font-size: 0.78rem; color: var(--primary);
}

/* ==================== 页脚 ==================== */
.footer { background: #0f172a; color: #cbd5e1; padding: 56px 0 24px; margin-top: 40px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1.5fr 1.4fr; gap: 40px; margin-bottom: 36px; }
.footer .logo { color: #fff; }
.footer-brand p { margin-top: 14px; color: #94a3b8; font-size: 0.9rem; }
.footer-links h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav { display: grid !important; grid-template-columns: 1fr 1fr; gap: 10px 24px; }
.footer-links a, .footer-links li { color: #94a3b8; font-size: 0.9rem; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; color: #64748b; font-size: 0.85rem; }
.footer-bottom a { color: var(--accent); }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .module-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid, .services-grid, .yuqing-grid, .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .geo-advantage-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.show {
        display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0;
        background: #fff; border-bottom: 1px solid var(--border-color); padding: 14px 20px;
        box-shadow: 0 10px 24px rgba(37, 99, 235, 0.1); gap: 4px;
    }
    .nav-links.show a { text-align: center; }
    .hamburger { display: flex; }
    .hero { flex-direction: column; text-align: center; padding-top: 100px; }
    .hero-stats { justify-content: center; }
    .hero-title { font-size: 2.4rem; }
    .hero-slogan { font-size: 1.5rem; letter-spacing: 2px; }
    .about-showcase, .solution-panel, .contact-grid { grid-template-columns: 1fr; }
    .solution-panel.active { display: flex; flex-direction: column; }
    .geo-grid, .news-grid, .module-grid, .about-grid, .services-grid, .yuqing-grid, .cases-grid { grid-template-columns: 1fr; }
    .geo-advantage-list { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .section-title { font-size: 1.7rem; }
}