/* ===== 基础变量 ===== */

:root {

  --color-primary: #0a5c8a;

  --color-primary-hover: #084d75;

  --color-primary-light: #e8f4fb;

  --color-accent: #00a8cc;

  --color-text: #1a1a2e;

  --color-text-muted: #5a6475;

  --color-text-light: #8a93a0;

  --color-bg: #f8fafc;

  --color-surface: #ffffff;

  --color-surface-alt: #f0f5fa;

  --color-border: rgba(10, 92, 138, 0.1);

  --color-success: #16a34a;

  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --radius: 8px;

  --radius-lg: 14px;

  --shadow-sm: 0 1px 4px rgba(10,92,138,0.07);

  --shadow-md: 0 4px 18px rgba(10,92,138,0.10);

  --shadow-lg: 0 12px 40px rgba(10,92,138,0.13);

  --transition: 200ms cubic-bezier(0.16,1,0.3,1);

  --container: 1160px;

}



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

html { scroll-behavior: smooth; -webkit-text-size-adjust: none; text-size-adjust: none; }

body { font-family: var(--font-body); font-size: 15px; color: var(--color-text); background: var(--color-bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }

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

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

ul, ol { list-style: none; }



/* ===== 辅助类 ===== */

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.section-tag { display: inline-block; font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent); background: var(--color-primary-light); border-radius: 20px; padding: 4px 14px; margin-bottom: 14px; }

.section-title { font-size: clamp(1.55rem, 2.5vw, 2.1rem); font-weight: 700; color: var(--color-text); line-height: 1.25; margin-bottom: 12px; }

.section-desc { font-size: 15px; color: var(--color-text-muted); max-width: 560px; line-height: 1.75; }

.section-header { text-align: center; margin-bottom: 48px; }

.section-header .section-desc { margin: 0 auto; }



/* ===== 按钮 ===== */

.btn { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; border-radius: var(--radius); padding: 10px 22px; cursor: pointer; transition: all var(--transition); border: 1.5px solid transparent; white-space: nowrap; }

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

.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); box-shadow: var(--shadow-md); }

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

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

.btn-lg { padding: 13px 30px; font-size: 15px; }

.btn-sm { padding: 7px 16px; font-size: 13px; }



/* ===== Header ===== */

.header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.97); backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-border); }

.header .container { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 24px; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.logo img { height: 36px; width: auto; }

.nav-menu { display: flex; align-items: center; gap: 4px; }

.nav-menu a { font-size: 14px; font-weight: 500; color: var(--color-text-muted); padding: 6px 12px; border-radius: var(--radius); transition: all var(--transition); }

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

.nav-actions { display: flex; align-items: center; gap: 10px; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }

.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: var(--transition); }



/* ===== Hero ===== */

.hero { position: relative; overflow: hidden; background: linear-gradient(135deg, #0a2a45 0%, #0a5c8a 55%, #0e7caf 100%); color: #fff; padding: clamp(60px,9vw,110px) 0 clamp(50px,7vw,90px); }

.hero::before { content: ''; position: absolute; inset: 0; 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='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }

.hero-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.hero-text h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; line-height: 1.2; margin-bottom: 16px; }

.hero-text h1 span { color: #4dd8f0; }

.hero-text p { font-size: 16px; color: rgba(255,255,255,0.82); line-height: 1.8; margin-bottom: 30px; max-width: 480px; }

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

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

.hero-buttons .btn-primary:hover { background: #e8f4fb; }

.hero-buttons .btn-outline { color: #fff; border-color: rgba(255,255,255,0.5); }

.hero-buttons .btn-outline:hover { background: rgba(255,255,255,0.1); }

.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.stat-card { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14); border-radius: var(--radius-lg); padding: 22px 20px; text-align: center; backdrop-filter: blur(4px); }

.stat-card .stat-number { font-size: clamp(1.6rem, 2.5vw, 2.2rem); font-weight: 700; color: #4dd8f0; line-height: 1.1; }

.stat-card .stat-label { font-size: 13px; color: rgba(255,255,255,0.72); margin-top: 6px; }



/* ===== 核心优势 ===== */

.section { padding: clamp(60px,7vw,96px) 0; }

.section-alt { background: var(--color-surface-alt); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }

.feature-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 32px 28px; transition: all var(--transition); }

.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(10,92,138,0.2); }

.card-icon { width: 48px; height: 48px; background: var(--color-primary-light); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }

.card-icon svg { width: 22px; height: 22px; stroke: var(--color-primary); }

.feature-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; color: var(--color-text); }

.feature-card p { font-size: 14px; color: var(--color-text-muted); line-height: 1.75; }



/* ===== 服务产品 ===== */

.service-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 30px 26px; display: flex; flex-direction: column; transition: all var(--transition); }

.service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: rgba(10,92,138,0.2); }

.service-card h3 { font-size: 17px; font-weight: 600; margin: 14px 0 10px; }

.service-card p { font-size: 14px; color: var(--color-text-muted); line-height: 1.75; flex: 1; }

.card-link { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; font-weight: 500; color: var(--color-primary); margin-top: 18px; }

.card-link:hover { color: var(--color-primary-hover); gap: 8px; }



/* ===== 关于我们 ===== */

.about-text h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 16px; }

.about-text p { font-size: 15px; color: var(--color-text-muted); line-height: 1.85; margin-bottom: 16px; text-indent: 2em; }

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

.about-img img { width: 100%; height: 380px; object-fit: cover; display: block; }

.highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }

.highlight-item { display: flex; align-items: flex-start; gap: 10px; padding: 14px; background: var(--color-surface-alt); border-radius: var(--radius); }

.highlight-item .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); margin-top: 7px; flex-shrink: 0; }

.highlight-item span { font-size: 13px; color: var(--color-text-muted); line-height: 1.6; }



/* ===== 数据统计 ===== */

.stats-section { background: var(--color-primary); padding: clamp(48px,5vw,72px) 0; }

.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 2px; }

.stat-box { text-align: center; padding: 32px 20px; }

.stat-box .stat-number { font-size: clamp(2rem,3vw,2.8rem); font-weight: 700; color: #fff; line-height: 1; }

.stat-box .stat-label { font-size: 14px; color: rgba(255,255,255,0.72); margin-top: 8px; }



/* ===== 解决方案 ===== */

.solution-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }

.solution-card { border-radius: var(--radius-lg); padding: 28px 24px; background: var(--color-surface); border: 1px solid var(--color-border); transition: all var(--transition); }

.solution-card:hover { box-shadow: var(--shadow-md); border-color: rgba(10,92,138,0.2); transform: translateY(-2px); }

.solution-icon { font-size: 2rem; margin-bottom: 14px; }

.solution-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }

.solution-card p { font-size: 13px; color: var(--color-text-muted); line-height: 1.75; }

.solution-card .tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }

.tag { font-size: 11px; background: var(--color-primary-light); color: var(--color-primary); border-radius: 20px; padding: 3px 10px; }



/* ===== 服务流程 ===== */

.process-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; }

.process-grid::before { content: ''; position: absolute; top: 34px; left: 12%; right: 12%; height: 2px; background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%); opacity: 0.2; z-index: 0; }

.process-item { text-align: center; position: relative; z-index: 1; }

.process-num { width: 68px; height: 68px; border-radius: 50%; background: var(--color-primary); color: #fff; font-size: 1.4rem; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; box-shadow: 0 4px 16px rgba(10,92,138,0.3); }

.process-item h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }

.process-item p { font-size: 13px; color: var(--color-text-muted); line-height: 1.7; }



/* ===== 客户案例 ===== */

.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }

.case-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition); }

.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }

.case-tag { display: inline-block; font-size: 11px; background: var(--color-primary-light); color: var(--color-primary); border-radius: 20px; padding: 3px 10px; margin-bottom: 10px; }

.case-body { padding: 24px; }

.case-body h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }

.case-body p { font-size: 13px; color: var(--color-text-muted); line-height: 1.75; }

.case-result { display: flex; align-items: center; gap: 8px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--color-border); }

.case-result .num { font-size: 1.3rem; font-weight: 700; color: var(--color-success); }

.case-result .label { font-size: 12px; color: var(--color-text-muted); }



/* ===== 政策优势 ===== */

.policy-section { background: linear-gradient(135deg, #0a2a45 0%, #0a5c8a 100%); color: #fff; padding: clamp(60px,6vw,88px) 0; }

.policy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.policy-text h2 { font-size: clamp(1.4rem,2.5vw,2rem); font-weight: 700; margin-bottom: 16px; }

.policy-text p { font-size: 15px; color: rgba(255,255,255,0.8); line-height: 1.85; margin-bottom: 20px; }

.policy-list { display: flex; flex-direction: column; gap: 12px; }

.policy-item { display: flex; align-items: flex-start; gap: 12px; }

.policy-item .icon { width: 36px; height: 36px; border-radius: var(--radius); background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1rem; }

.policy-item .info strong { display: block; font-size: 14px; font-weight: 600; margin-bottom: 3px; }

.policy-item .info span { font-size: 13px; color: rgba(255,255,255,0.7); }

.policy-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.policy-card { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14); border-radius: var(--radius-lg); padding: 22px 18px; text-align: center; }

.policy-card .pnum { font-size: 1.8rem; font-weight: 700; color: #4dd8f0; }

.policy-card .ptxt { font-size: 13px; color: rgba(255,255,255,0.75); margin-top: 6px; }



/* ===== 新闻中心 ===== */

.news-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }

.news-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition); }

.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.news-body { padding: 22px 22px 20px; }

.news-cat { font-size: 11px; color: var(--color-accent); font-weight: 500; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }

.news-body h3 { font-size: 15px; font-weight: 600; line-height: 1.5; margin-bottom: 10px; }

.news-body p { font-size: 13px; color: var(--color-text-muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.news-foot { padding: 12px 22px; border-top: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; }

.news-date { font-size: 12px; color: var(--color-text-light); }

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

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



/* ===== CTA ===== */

.cta-section { background: var(--color-surface-alt); border-top: 1px solid var(--color-border); padding: clamp(60px,6vw,88px) 0; text-align: center; }

.cta-section h2 { font-size: clamp(1.5rem,2.5vw,2rem); font-weight: 700; margin-bottom: 14px; }

.cta-section p { font-size: 15px; color: var(--color-text-muted); max-width: 540px; margin: 0 auto 32px; }

.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }



/* ===== Footer ===== */

.footer { background: #0d1f2d; color: rgba(255,255,255,0.75); padding: 60px 0 0; }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }

.footer-brand .logo { margin-bottom: 16px; }

.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 280px; }

.footer-social { display: flex; gap: 10px; margin-top: 20px; }

.footer-social a { width: 36px; height: 36px; border-radius: var(--radius); background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 15px; transition: all var(--transition); border: 1px solid rgba(255,255,255,0.1); }

.footer-social a:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; }

.footer-links { display: flex; flex-direction: column; gap: 9px; }

.footer-links a { font-size: 13px; color: rgba(255,255,255,0.6); transition: color var(--transition); }

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

.footer-contact { display: flex; flex-direction: column; gap: 10px; }

.footer-contact li { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; }

.footer-contact i { color: var(--color-accent); margin-top: 2px; flex-shrink: 0; }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.4); }

.footer-bottom-links { display: flex; gap: 18px; }

.footer-bottom-links a { font-size: 12px; color: rgba(255,255,255,0.4); transition: color var(--transition); }

.footer-bottom-links a:hover { color: rgba(255,255,255,0.75); }



/* ===== 滚动动画 ===== */

.animate-on-scroll { opacity: 0; transform: translateY(24px); transition: opacity 0.55s ease, transform 0.55s ease; }

.animate-on-scroll.visible { opacity: 1; transform: none; }



/* ===== 移动端 ===== */

@media (max-width: 1024px) {

  .grid-3, .solution-grid, .case-grid, .news-grid { grid-template-columns: 1fr 1fr; }

  .process-grid { grid-template-columns: 1fr 1fr; }

  .process-grid::before { display: none; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

}

@media (max-width: 768px) {

  .nav-menu, .nav-actions .btn { display: none; }

  .menu-toggle { display: flex; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; }

  .hero-stats { grid-template-columns: 1fr 1fr; }

  .grid-2, .policy-grid { grid-template-columns: 1fr; gap: 32px; }

  .grid-3, .solution-grid, .case-grid, .news-grid, .process-grid { grid-template-columns: 1fr; }

  .highlights { grid-template-columns: 1fr; }

  .policy-cards { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  .footer-bottom { flex-direction: column; text-align: center; }

}



/* ===== 微信弹出 ===== */

.wechat-wrap { position: relative; }

.wechat-qr { display: none; position: absolute; bottom: 44px; left: 50%; transform: translateX(-50%); background: #fff; border-radius: var(--radius-lg); padding: 12px; box-shadow: var(--shadow-lg); text-align: center; width: 130px; z-index: 99; }

.wechat-qr img { width: 100px; height: 100px; }

.wechat-qr p { font-size: 11px; color: #888; margin-top: 6px; }

.wechat-wrap:hover .wechat-qr { display: block; }