/* ============================================================
   恒创智联门户 前台样式（FastAdmin 版）
   风格：华为/腾讯云式 深蓝科技感
   ============================================================ */
:root {
  --primary: #0a3d7a;
  --primary-light: #1a5cb5;
  --accent: #00a8ff;
  --accent-2: #00d4a0;
  --dark: #0a1628;
  --text-main: #333;
  --text-sub: #666;
  --bg-gray: #f5f7fa;
  --border: #e5e9f0;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(10, 61, 122, .08);
  --shadow-lg: 0 10px 40px rgba(10, 61, 122, .15);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif; color: var(--text-main); background: #fff; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航 */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,22,40,.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,.08); }
.navbar-inner { display: flex; align-items: center; height: 68px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 38px; height: 38px; border-radius: 9px; background: linear-gradient(135deg,#00a8ff,#0066cc); display: flex; align-items: center; justify-content: center; }
.logo-text { color: #fff; font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.logo-text small { display: block; font-size: 10px; font-weight: 400; color: rgba(255,255,255,.6); letter-spacing: 2px; }
.nav-links { display: flex; gap: 36px; margin-left: 60px; }
.nav-links a { color: rgba(255,255,255,.85); font-size: 15px; position: relative; padding: 6px 0; transition: color .2s; }
.nav-links a::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--accent); transition: width .25s; }
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { margin-left: auto; }
.btn-primary { display: inline-block; padding: 10px 26px; border-radius: 24px; background: linear-gradient(135deg,#00a8ff,#0070dd); color: #fff; font-size: 14px; font-weight: 600; box-shadow: 0 4px 14px rgba(0,168,255,.35); transition: all .25s; border: none; cursor: pointer; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,168,255,.5); }
.btn-outline { display: inline-block; padding: 10px 26px; border-radius: 24px; border: 1.5px solid var(--accent); color: var(--accent); font-size: 14px; font-weight: 600; background: transparent; transition: all .25s; cursor: pointer; }
.btn-outline:hover { background: var(--accent); color: #fff; }

/* Hero */
.hero { position: relative; overflow: hidden; background: linear-gradient(135deg,#071227 0%,#0a3d7a 55%,#0d55a8 100%); padding: 160px 0 120px; color: #fff; }
.hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(ellipse at center,rgba(0,0,0,.8),transparent 75%); -webkit-mask-image: radial-gradient(ellipse at center,rgba(0,0,0,.8),transparent 75%); }
.hero-inner { position: relative; z-index: 2; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.hero h1 { font-size: 52px; font-weight: 800; letter-spacing: 2px; line-height: 1.25; margin-bottom: 20px; }
.hero h1 .grad { background: linear-gradient(90deg,#00a8ff,#00d4a0); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero .sub { font-size: 18px; color: rgba(255,255,255,.75); max-width: 640px; margin-bottom: 36px; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btn-primary { padding: 14px 36px; font-size: 16px; }
.hero .btn-outline { padding: 14px 36px; font-size: 16px; color: #fff; border-color: rgba(255,255,255,.6); }
.hero .btn-outline:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.hero-stats { position: relative; z-index: 2; max-width: 1200px; margin: 60px auto 0; padding: 0 24px; display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.stat-card { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 24px; text-align: center; backdrop-filter: blur(8px); transition: all .3s; }
.stat-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.stat-card .num { font-size: 36px; font-weight: 800; color: #fff; }
.stat-card .num span { color: var(--accent); }
.stat-card .label { font-size: 13px; color: rgba(255,255,255,.65); margin-top: 6px; }

/* 区块 */
.section { padding: 90px 0; }
.section-gray { background: var(--bg-gray); }
.section-dark { background: var(--dark); color: #fff; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .tag { display: inline-block; font-size: 13px; color: var(--accent); border: 1px solid rgba(0,168,255,.4); border-radius: 20px; padding: 4px 16px; margin-bottom: 14px; background: rgba(0,168,255,.06); }
.section-head h2 { font-size: 36px; font-weight: 700; letter-spacing: 1px; }
.section-head .desc { color: var(--text-sub); margin-top: 12px; font-size: 15px; }
.section-dark .section-head .desc { color: rgba(255,255,255,.6); }
.section-dark .section-head h2 { color: #fff; }

/* 卡片 */
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.biz-card { background: #fff; border-radius: var(--radius); padding: 34px 28px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: all .3s; position: relative; overflow: hidden; }
.biz-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg,var(--accent),var(--accent-2)); transform: scaleX(0); transform-origin: left; transition: transform .35s; }
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.biz-card:hover::before { transform: scaleX(1); }
.biz-icon { width: 56px; height: 56px; border-radius: 14px; margin-bottom: 20px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,rgba(0,168,255,.12),rgba(0,212,160,.12)); color: var(--primary-light); font-size: 26px; }
.biz-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.biz-card p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }
.dark-card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 30px 26px; transition: all .3s; }
.dark-card:hover { background: rgba(255,255,255,.09); transform: translateY(-4px); border-color: rgba(0,168,255,.4); }
.dark-card h3 { color: #fff; font-size: 17px; margin-bottom: 10px; }
.dark-card p { color: rgba(255,255,255,.6); font-size: 13.5px; line-height: 1.75; }
.dark-card .link { display: inline-block; margin-top: 14px; color: var(--accent); font-size: 13px; }

/* 解决方案 */
.solution-item { display: flex; gap: 24px; align-items: flex-start; background: #fff; border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: all .3s; margin-bottom: 20px; }
.solution-item:hover { box-shadow: var(--shadow-lg); transform: translateX(4px); }
.sol-icon { flex-shrink: 0; width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,#00a8ff,#0066cc); color: #fff; font-size: 22px; }
.solution-item h3 { font-size: 17px; margin-bottom: 8px; }
.solution-item p { font-size: 14px; color: var(--text-sub); line-height: 1.75; }

/* 关于 */
.about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: 34px; margin-bottom: 24px; }
.about-text p { color: var(--text-sub); line-height: 1.9; margin-bottom: 16px; font-size: 15px; }
.about-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.about-feat { display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--text-main); }
.about-feat .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.about-visual { background: linear-gradient(135deg,#071227,#0a3d7a); border-radius: 18px; padding: 50px; color: #fff; position: relative; overflow: hidden; min-height: 320px; display: flex; align-items: center; justify-content: center; }
.about-visual .inner { position: relative; z-index: 2; text-align: center; }
.about-visual .inner .big { font-size: 64px; font-weight: 800; background: linear-gradient(90deg,#00a8ff,#00d4a0); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.about-visual .inner .small { margin-top: 10px; color: rgba(255,255,255,.7); letter-spacing: 3px; font-size: 13px; }

/* 联系 */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info h3 { font-size: 24px; margin-bottom: 20px; }
.contact-info .item { display: flex; gap: 16px; margin-bottom: 22px; align-items: flex-start; }
.contact-info .item .ic { width: 42px; height: 42px; border-radius: 10px; background: linear-gradient(135deg,rgba(0,168,255,.12),rgba(0,212,160,.12)); color: var(--primary-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 18px; }
.contact-info .item .t { font-size: 15px; font-weight: 600; }
.contact-info .item .d { font-size: 14px; color: var(--text-sub); margin-top: 3px; }
.contact-form { background: #fff; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
.contact-form .form-group { margin-bottom: 20px; }
.contact-form label { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 8px; }
.contact-form input, .contact-form textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; outline: none; transition: border-color .2s; font-family: inherit; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form textarea { resize: vertical; min-height: 120px; }

/* 页脚 */
.footer { background: var(--dark); color: rgba(255,255,255,.7); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer .about p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,.55); }
.footer ul li { margin-bottom: 10px; }
.footer ul a { font-size: 13px; color: rgba(255,255,255,.6); transition: color .2s; }
.footer ul a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 12.5px; color: rgba(255,255,255,.45); }
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--accent); }

/* 子页 hero */
.page-hero { position: relative; overflow: hidden; color: #fff; background: linear-gradient(135deg,#071227 0%,#0a3d7a 60%,#0d55a8 100%); padding: 140px 0 80px; text-align: center; }
.page-hero .inner { position: relative; z-index: 2; }
.page-hero h1 { font-size: 42px; font-weight: 800; letter-spacing: 2px; }
.page-hero .crumb { margin-top: 14px; font-size: 13px; color: rgba(255,255,255,.6); }
.page-hero .crumb a { color: rgba(255,255,255,.8); }
.page-hero .crumb a:hover { color: #fff; }

/* 响应式 */
@media (max-width: 992px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2,1fr); }
  .about-wrap, .contact-wrap { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .hero h1 { font-size: 36px; }
}
@media (max-width: 600px) {
  .grid-3, .grid-4, .hero-stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 120px 0 80px; }
  .hero h1 { font-size: 30px; }
}