/* ==========================================================================
   江阴天恒计算机信息技术有限公司 - 企业官网样式表
   Style: 简约大气 / Deep Blue + White + Gold Accent
   ========================================================================== */

:root {
  --primary: #0a2540;        /* 深海军蓝 - 主色 */
  --primary-light: #123a63;
  --primary-deep: #061a30;
  --accent: #c9a24b;         /* 金色 - 点缀 */
  --accent-light: #e3c98a;
  --bg-light: #f6f8fb;       /* 浅灰蓝背景 */
  --bg-white: #ffffff;
  --text-main: #2b3442;
  --text-sub: #5c6b7f;
  --text-light: #ffffff;
  --border: #e3e9f0;
  --shadow-sm: 0 2px 12px rgba(10, 37, 64, 0.06);
  --shadow-md: 0 8px 30px rgba(10, 37, 64, 0.10);
  --shadow-lg: 0 16px 48px rgba(10, 37, 64, 0.16);
  --radius: 12px;
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text-main);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

.section { padding: 96px 0; }
.section--alt { background: var(--bg-light); }

/* ---------- 通用标题 ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-head p { color: var(--text-sub); font-size: 16px; }
.section-head .divider {
  width: 56px; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  margin: 18px auto 0;
  border-radius: 2px;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--primary-deep);
  color: rgba(255,255,255,.82);
  font-size: 13px;
  padding: 8px 0;
  position: relative;
  z-index: 100;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.topbar a:hover { color: var(--accent-light); }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar i { color: var(--accent); margin-right: 6px; font-size: 13px; }

/* ---------- 导航栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.logo { display: flex; align-items: center; }
.logo img { height: 48px; width: auto; display: block; transition: transform .25s ease; }
.logo:hover img { transform: scale(1.03); }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  display: block;
  padding: 10px 18px;
  font-size: 15.5px;
  color: var(--text-main);
  font-weight: 500;
  border-radius: 6px;
  position: relative;
}
.main-nav a:hover { color: var(--primary); background: var(--bg-light); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 4px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-cta {
  margin-left: 12px;
  padding: 10px 22px !important;
  background: var(--primary);
  color: #fff !important;
  border-radius: 6px;
  font-weight: 500;
}
.nav-cta:hover { background: var(--primary-light); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 8px;
  border: 1px solid var(--border);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); border-radius: 2px; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 首页 ---------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 55%, #0f3a6b 100%);
  color: #fff;
  overflow: hidden;
  padding: 130px 0 140px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(201,162,75,.22) 0%, transparent 42%),
    radial-gradient(circle at 12% 82%, rgba(255,255,255,.06) 0%, transparent 46%);
  pointer-events: none;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 75%);
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { max-width: 860px; }
.hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(201,162,75,.55);
  color: var(--accent-light);
  background: rgba(201,162,75,.1);
  padding: 7px 16px;
  border-radius: 40px;
  font-size: 13.5px;
  letter-spacing: 2px;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 54px;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 24px;
}
.hero h1 .hl { color: var(--accent-light); }
.hero p.lead {
  font-size: 18px;
  color: rgba(255,255,255,.82);
  max-width: 680px;
  margin-bottom: 42px;
  line-height: 1.9;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  transition: all .3s ease;
  letter-spacing: 1px;
}
.btn--primary { background: var(--accent); color: var(--primary-deep); }
.btn--primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(201,162,75,.35); }
.btn--ghost { border: 1.5px solid rgba(255,255,255,.55); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,.1); transform: translateY(-2px); border-color: #fff; }
.btn--outline { border: 1.5px solid var(--primary); color: var(--primary); }
.btn--outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.hero-stats {
  display: flex;
  gap: 0;
  margin-top: 64px;
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 36px;
  flex-wrap: wrap;
}
.hero-stats .stat { flex: 1; min-width: 160px; }
.hero-stats .stat + .stat { border-left: 1px solid rgba(255,255,255,.14); padding-left: 40px; }
.hero-stats .num {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .num em { font-style: normal; color: var(--accent-light); font-size: 28px; margin-left: 2px; }
.hero-stats .label { color: rgba(255,255,255,.66); font-size: 14px; margin-top: 6px; letter-spacing: 1px; }

/* ---------- 特性栏 ---------- */
.feature-strip {
  background: var(--bg-white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius);
  margin-top: -72px;
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
}
.feature-strip .f-item { padding: 30px 28px; display: flex; gap: 16px; align-items: flex-start; }
.feature-strip .f-item + .f-item { border-left: 1px solid var(--border); }
.feature-strip .f-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: rgba(10,37,64,.07);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.feature-strip .f-item h4 { font-size: 16px; color: var(--primary); margin-bottom: 4px; }
.feature-strip .f-item p { font-size: 13.5px; color: var(--text-sub); }

/* ---------- 通用区块 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.text-block h3 { font-size: 30px; color: var(--primary); margin-bottom: 18px; line-height: 1.4; font-weight: 700; }
.text-block p { color: var(--text-sub); margin-bottom: 16px; font-size: 15.5px; }
.text-block .highlight-num { font-size: 42px; font-weight: 800; color: var(--accent); }

.check-list li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; color: var(--text-main); font-size: 15px; }
.check-list i { color: var(--accent); margin-top: 4px; font-size: 14px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all .35s ease;
  position: relative;
  overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.card .card-icon {
  width: 60px; height: 60px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 6px 16px rgba(10,37,64,.22);
}
.card h4 { font-size: 18px; color: var(--primary); margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-sub); line-height: 1.75; }
.card ul { margin-top: 12px; }
.card ul li { font-size: 13.5px; color: var(--text-sub); padding: 3px 0; display: flex; gap: 8px; align-items: center; }
.card ul li::before { content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--accent); font-size: 12px; }
.card .card-more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 14px; color: var(--primary); font-weight: 600; }
.card .card-more:hover { color: var(--accent); }

/* ---------- 品牌墙 ---------- */
.brand-wall { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.brand-wall .brand {
  padding: 14px 26px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-main);
  font-weight: 500;
  transition: all .3s ease;
}
.brand-wall .brand:hover { border-color: var(--accent); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.case-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 32px;
  transition: all .35s ease;
  border-left: 4px solid var(--accent);
}
.case-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.case-card .case-tag { display: inline-block; font-size: 12px; color: var(--accent); background: rgba(201,162,75,.1); padding: 4px 12px; border-radius: 20px; letter-spacing: 1px; margin-bottom: 14px; }
.case-card h4 { font-size: 20px; color: var(--primary); margin-bottom: 10px; }
.case-card p { font-size: 14.5px; color: var(--text-sub); }

/* ---------- 数字统计 ---------- */
.stat-band { background: linear-gradient(120deg, var(--primary-deep), var(--primary-light)); color: #fff; padding: 72px 0; }
.stat-band .grid-4 { text-align: center; }
.stat-band .num { font-size: 46px; font-weight: 800; color: var(--accent-light); line-height: 1.2; }
.stat-band .label { color: rgba(255,255,255,.78); font-size: 15px; margin-top: 8px; letter-spacing: 1px; }

/* ---------- CTA 区块 ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 120%, rgba(201,162,75,.28) 0%, transparent 50%);
}
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: 34px; margin-bottom: 14px; letter-spacing: 1px; }
.cta-band p { color: rgba(255,255,255,.8); margin-bottom: 34px; font-size: 16px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-deep); color: rgba(255,255,255,.72); padding: 64px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 44px; }
.footer-grid h5 { color: #fff; font-size: 16px; margin-bottom: 20px; letter-spacing: 1px; position: relative; padding-bottom: 10px; }
.footer-grid h5::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--accent); }
.footer-grid p { line-height: 1.9; }
.footer-grid ul li { padding: 6px 0; }
.footer-grid ul li a:hover { color: var(--accent-light); }
.footer-grid ul li i { color: var(--accent); margin-right: 10px; font-size: 13px; width: 14px; text-align: center; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo img { height: 48px; width: auto; filter: brightness(1.2); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
.footer-bottom a { color: rgba(255,255,255,.6); text-decoration: none; transition: color .25s; }
.footer-bottom a:hover { color: var(--accent-light); }

/* ---------- 子页横幅 ---------- */
.page-banner {
  background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 70%, #0f3a6b 100%);
  color: #fff;
  padding: 90px 0 84px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 30%, rgba(201,162,75,.18) 0%, transparent 44%);
}
.page-banner .crumb { font-size: 13.5px; color: rgba(255,255,255,.6); letter-spacing: 2px; margin-bottom: 14px; }
.page-banner .crumb a:hover { color: var(--accent-light); }
.page-banner h1 { font-size: 42px; letter-spacing: 2px; font-weight: 800; margin-bottom: 12px; }
.page-banner p { color: rgba(255,255,255,.78); font-size: 16px; max-width: 640px; margin: 0 auto; }

/* ---------- 关于页 ---------- */
.about-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.about-features .af {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  text-align: center;
  transition: all .3s ease;
}
.about-features .af:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.about-features .af i {
  font-size: 30px;
  color: var(--accent);
  background: rgba(201,162,75,.12);
  width: 68px; height: 68px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
}
.about-features .af h4 { font-size: 17px; color: var(--primary); margin-bottom: 8px; }
.about-features .af p { font-size: 14px; color: var(--text-sub); }

/* 时间线 */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding: 20px 0; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--accent), var(--primary)); transform: translateX(-50%); }
.timeline-item { position: relative; width: 50%; padding: 24px 44px 24px 0; }
.timeline-item:nth-child(even) { left: 50%; padding: 24px 0 24px 44px; }
.timeline-dot {
  position: absolute;
  top: 30px;
  right: -10px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--bg-white);
  border: 4px solid var(--accent);
  z-index: 2;
}
.timeline-item:nth-child(even) .timeline-dot { right: auto; left: -10px; }
.timeline-year { font-size: 26px; font-weight: 800; color: var(--primary); margin-bottom: 6px; }
.timeline-item h4 { font-size: 17px; color: var(--primary); margin-bottom: 8px; }
.timeline-item p { font-size: 14.5px; color: var(--text-sub); }
.timeline-item .t-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow-sm); transition: all .3s; }
.timeline-item .t-card:hover { box-shadow: var(--shadow-md); }

/* 团队 */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card { text-align: center; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 20px; transition: all .3s; }
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.team-card .t-avatar {
  width: 74px; height: 74px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 28px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(10,37,64,.2);
}
.team-card h4 { font-size: 17px; color: var(--primary); margin-bottom: 4px; }
.team-card p { font-size: 13.5px; color: var(--text-sub); }

/* 文化卡片 */
.culture-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.culture-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  transition: all .3s;
}
.culture-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.culture-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.culture-card h4 { font-size: 18px; color: var(--primary); margin-bottom: 14px; }
.culture-card p { font-size: 15px; color: var(--text-sub); }

/* ---------- 服务页 ---------- */
.service-hero-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 30px; transition: all .35s; position: relative; overflow: hidden; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.service-card .s-top { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.service-card .s-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 22px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.service-card .s-num { font-size: 13px; color: var(--accent); font-weight: 700; letter-spacing: 2px; }
.service-card h4 { font-size: 19px; color: var(--primary); margin-bottom: 10px; }
.service-card p { font-size: 14.5px; color: var(--text-sub); margin-bottom: 12px; }
.service-card .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-card .tags span { background: var(--bg-light); border: 1px solid var(--border); color: var(--text-sub); font-size: 12.5px; padding: 4px 12px; border-radius: 20px; }

/* 合作流程 */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.process-step { position: relative; text-align: center; padding: 30px 18px; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); }
.process-step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-size: 30px;
  font-weight: 800;
  color: rgba(10,37,64,.14);
  display: block;
  margin-bottom: 10px;
}
.process-step h4 { font-size: 16px; color: var(--primary); margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--text-sub); }
.process-step .p-arrow { position: absolute; right: -14px; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 18px; z-index: 2; }
.process-step:last-child .p-arrow { display: none; }

/* 业绩表格 */
.performance-table-wrap { max-height: 520px; overflow-y: auto; overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.performance-table { width: 100%; border-collapse: collapse; background: var(--bg-white); min-width: 640px; }
.performance-table thead th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 16px 20px;
  text-align: left;
  letter-spacing: 1px;
}
.performance-table tbody td { padding: 14px 20px; font-size: 14.5px; color: var(--text-main); border-bottom: 1px solid var(--border); }
.performance-table tbody tr:nth-child(even) { background: var(--bg-light); }
.performance-table tbody tr:hover { background: rgba(201,162,75,.08); }
.performance-table .badge-year { display: inline-block; background: rgba(201,162,75,.14); color: #8a6a1f; font-size: 13px; padding: 2px 12px; border-radius: 20px; font-weight: 600; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
.contact-info-card { background: linear-gradient(150deg, var(--primary), var(--primary-light)); color: #fff; border-radius: var(--radius); padding: 44px 38px; position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; column-gap: 36px; }
.contact-info-card::before { content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px; border-radius: 50%; background: rgba(201,162,75,.14); }
.contact-info-card h3 { font-size: 24px; margin-bottom: 8px; letter-spacing: 1px; grid-column: 1 / -1; }
.contact-info-card > p { color: rgba(255,255,255,.72); font-size: 14.5px; margin-bottom: 30px; grid-column: 1 / -1; }
.contact-info-card .c-item { display: flex; gap: 16px; margin-bottom: 22px; align-items: flex-start; }
.contact-info-card .c-item i { width: 44px; height: 44px; border-radius: 10px; background: rgba(255,255,255,.12); display: flex; align-items: center; justify-content: center; font-size: 17px; color: var(--accent-light); flex-shrink: 0; }
.contact-info-card .c-item h5 { font-size: 15px; color: var(--accent-light); margin-bottom: 2px; }
.contact-info-card .c-item p { font-size: 15px; color: rgba(255,255,255,.9); }
.contact-info-card .c-item p small { display: block; color: rgba(255,255,255,.6); font-size: 13px; }

.map-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); min-height: 320px; }
.map-placeholder {
  background: linear-gradient(135deg, #eef2f7, #e3e9f0);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-sub);
  text-align: center;
  padding: 30px;
}
.map-placeholder i { font-size: 42px; color: var(--primary); opacity: .4; }
.map-placeholder p { font-size: 15px; }
.map-placeholder small { font-size: 13px; color: var(--text-sub); opacity: .8; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .35s ease;
  z-index: 90;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--accent); color: var(--primary-deep); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .service-hero-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 42px; }
}

@media (max-width: 860px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 32px; }
  .feature-strip { grid-template-columns: repeat(2, 1fr); margin-top: -56px; }
  .feature-strip .f-item + .f-item { border-left: none; }
  .case-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info-card { grid-template-columns: 1fr; }
  .timeline::before { left: 8px; }
  .timeline-item, .timeline-item:nth-child(even) { width: 100%; left: 0; padding: 16px 0 16px 40px; }
  .timeline-dot, .timeline-item:nth-child(even) .timeline-dot { left: -1px; right: auto; }
  .hero-stats .stat { min-width: 50%; }
  .hero-stats .stat:nth-child(3) { border-left: none; }
  .hero-stats .stat:nth-child(odd) { padding-left: 0; }
  .nav-cta { display: none; }
}

@media (max-width: 600px) {
  .container { padding: 0 18px; }
  .topbar-right { display: none; }
  .hero { padding: 90px 0 110px; }
  .hero h1 { font-size: 32px; }
  .hero p.lead { font-size: 16px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .grid-4, .service-hero-grid, .about-features, .team-grid, .process-steps { grid-template-columns: 1fr; }
  .feature-strip { grid-template-columns: 1fr; }
  .feature-strip .f-item { padding: 22px; }
  .page-banner h1 { font-size: 30px; }
  .page-banner { padding: 64px 0 60px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .stat-band .num { font-size: 34px; }
  .hero-stats .num { font-size: 30px; }
}

/* 移动端导航 */
@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 18px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 12px; border-radius: 6px; }
  .main-nav a.active::after { display: none; }
  .main-nav a.active { background: var(--bg-light); }
}