/* ============== 全局变量 ============== */
:root {
  --primary: #0a4cb8;
  --primary-dark: #073a8e;
  --primary-light: #2e6fd9;
  --accent: #00c2ff;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --bg-deep: #0b1a3a;
  --text: #1a2236;
  --text-soft: #56607a;
  --text-light: #8d97ad;
  --border: #e3e8f0;
  --shadow-sm: 0 2px 8px rgba(10, 76, 184, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 76, 184, 0.1);
  --shadow-lg: 0 16px 40px rgba(10, 76, 184, 0.14);
  --radius: 8px;
  --radius-lg: 16px;
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }

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

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

/* ============== 顶部导航 ============== */
.header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: url("../images/logo-mark.svg") center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: 0;
  font-weight: 800;
}
.logo-text { line-height: 1.2; }
.logo-text small { display: block; font-size: 11px; color: var(--text-light); font-weight: 400; }

.nav { display: flex; gap: 36px; }
.nav a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav a.active, .nav a:hover { color: var(--primary); }
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--primary);
  color: #fff;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.header-cta:hover { background: var(--primary-dark); color: #fff; }

.menu-toggle { display: none; }

/* ============== 通用按钮 ============== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: all .25s;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(10, 76, 184, 0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(10, 76, 184, 0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-ghost:hover { background: var(--primary); color: #fff; }
.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover { background: #f5f8fc; color: var(--primary); }

/* ============== 页面通用区块 ============== */
.section { padding: 80px 0; }
.section-soft { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(10, 76, 184, 0.08);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-soft);
  line-height: 1.8;
}

/* ============== Hero ============== */
.hero {
  position: relative;
  padding: 96px 0 100px;
  background:
    linear-gradient(90deg, rgba(5, 17, 43, 0.92) 0%, rgba(7, 36, 88, 0.78) 42%, rgba(10, 76, 184, 0.42) 100%),
    url("../images/hero-home.png") center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 194, 255, 0.18) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(46, 111, 217, 0.16) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  opacity: 0.38;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 24px;
}
.hero h1 span {
  background: linear-gradient(90deg, #00c2ff 0%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  max-width: 640px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat .num {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.hero-stat .num small { font-size: 18px; font-weight: 600; }
.hero-stat .label { font-size: 14px; color: rgba(255,255,255,0.7); }

/* 内页hero */
.page-hero {
  background: linear-gradient(135deg, #0b1a3a 0%, #0a4cb8 100%);
  color: #fff;
  padding: 70px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.5;
}
.page-hero-inner { position: relative; z-index: 2; max-width: 720px; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 14px; }
.breadcrumb a { color: rgba(255,255,255,0.85); }
.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.page-hero p { font-size: 17px; color: rgba(255,255,255,0.85); }

/* ============== 服务卡片 ============== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(10,76,184,0.1), rgba(0,194,255,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 24px;
}
.service-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.service-card p { color: var(--text-soft); font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
.service-card ul { list-style: none; }
.service-card li {
  font-size: 14px;
  color: var(--text-soft);
  padding: 6px 0 6px 22px;
  position: relative;
}
.service-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ============== 优势 ============== */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-item {
  text-align: center;
  padding: 32px 20px;
}
.advantage-num {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 12px;
}
.advantage-item h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.advantage-item p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* ============== 案例卡片 ============== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
  border: 1px solid var(--border);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.case-cover {
  height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0;
  font-weight: 800;
  letter-spacing: -1px;
  position: relative;
}
.case-cover.case-led { background-image: linear-gradient(rgba(4, 19, 48, 0.12), rgba(4, 19, 48, 0.18)), url("../images/case-led.png"); }
.case-cover.case-smart { background-image: linear-gradient(rgba(4, 19, 48, 0.12), rgba(4, 19, 48, 0.18)), url("../images/case-smart-home.png"); }
.case-cover.case-beauty { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-beauty.png"); }
.case-cover.case-home { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-home.png"); }
.case-cover.case-fashion { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-fashion.png"); }
.case-cover.case-health { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-health.png"); }
.case-cover.case-auto { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-auto.png"); }
.case-cover.case-pets { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-pets.png"); }
.case-cover.case-toys { background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.16)), url("../images/case-toys.png"); }
.case-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 30px 30px;
}
.case-cover.c2 { background: linear-gradient(135deg, #0a4cb8, #6c5ce7); }
.case-cover.c3 { background: linear-gradient(135deg, #0b1a3a, #00c2ff); }
.case-cover.c4 { background: linear-gradient(135deg, #1668d6, #00d4ff); }
.case-cover.c5 { background: linear-gradient(135deg, #073a8e, #4361ee); }
.case-cover.c6 { background: linear-gradient(135deg, #0a4cb8, #2dd4bf); }
.case-body { padding: 24px; }
.case-tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(10,76,184,0.08);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.case-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--text-soft); margin-bottom: 16px; line-height: 1.7; }
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.case-metrics .m { text-align: center; }
.case-metrics .m strong { display: block; color: var(--primary); font-size: 18px; font-weight: 800; }
.case-metrics .m span { font-size: 12px; color: var(--text-light); }

/* ============== CTA 区块 ============== */
.cta-band {
  background: linear-gradient(135deg, #0b1a3a 0%, #0a4cb8 100%);
  color: #fff;
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 50%, rgba(0,194,255,0.25), transparent 50%);
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-inner h2 { font-size: 32px; font-weight: 700; margin-bottom: 10px; }
.cta-inner p { color: rgba(255,255,255,0.8); font-size: 16px; }

/* ============== 页脚 ============== */
.footer {
  background: #0b1a3a;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 24px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { line-height: 1.8; max-width: 320px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,0.7); }
.footer-links a:hover { color: #fff; }
.footer-contact p { margin-bottom: 10px; line-height: 1.6; }
.footer-contact strong { color: #00c2ff; font-size: 18px; display: block; margin-bottom: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ============== 服务详情页 ============== */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 100px;
}
.service-detail:last-child { margin-bottom: 0; }
.service-detail.reverse { direction: rtl; }
.service-detail.reverse > * { direction: ltr; }

.service-detail-visual {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.service-detail-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}
.service-detail-visual.v2 { background: linear-gradient(135deg, #073a8e, #6c5ce7); }
.service-detail-visual.v3 { background: linear-gradient(135deg, #1668d6, #00d4ff); }
.service-detail-visual.visual-seo { background-image: linear-gradient(rgba(4, 19, 48, 0.12), rgba(4, 19, 48, 0.2)), url("../images/service-seo.png"); }
.service-detail-visual.visual-ads { background-image: linear-gradient(rgba(4, 19, 48, 0.12), rgba(4, 19, 48, 0.2)), url("../images/service-ads.png"); }
.service-detail-visual.visual-social { background-image: linear-gradient(rgba(4, 19, 48, 0.12), rgba(4, 19, 48, 0.2)), url("../images/service-social.png"); }

.service-detail h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}
.service-detail .service-sub {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(10,76,184,0.08);
  color: var(--primary);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.service-detail p { color: var(--text-soft); font-size: 15px; line-height: 1.9; margin-bottom: 20px; }
.feature-list { list-style: none; }
.feature-list li {
  padding: 10px 0 10px 32px;
  position: relative;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

/* ============== 流程 ============== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}
.process-step {
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative;
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 18px;
}
.process-step h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13px; color: var(--text-soft); line-height: 1.6; }

/* ============== 关于页 ============== */
.about-intro {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-intro h2 { font-size: 32px; font-weight: 700; margin-bottom: 20px; letter-spacing: -0.5px; }
.about-intro p { color: var(--text-soft); font-size: 15px; line-height: 1.9; margin-bottom: 16px; }
.about-visual {
  height: 400px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #0b1a3a, #0a4cb8 60%, #00c2ff);
  background-image: linear-gradient(rgba(4, 19, 48, 0.1), rgba(4, 19, 48, 0.22)), url("../images/about-team.png");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}
.about-visual-inner { position: relative; z-index: 2; text-align: center; }
.about-visual.has-photo .about-visual-inner { display: none; }
.about-visual-inner .big {
  font-size: 72px;
  font-weight: 800;
  letter-spacing: -2px;
  background: linear-gradient(180deg, #fff, #88c5ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.value-card {
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .3s;
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  color: #fff;
}
.value-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.value-card p { color: var(--text-soft); font-size: 14px; line-height: 1.7; }

.timeline {
  position: relative;
  padding-left: 40px;
  border-left: 2px solid var(--border);
  max-width: 720px;
  margin: 0 auto;
}
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -49px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-year { font-size: 18px; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
.timeline-item h4 { font-size: 16px; margin-bottom: 6px; font-weight: 700; }
.timeline-item p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* ============== 联系页 ============== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}
.contact-info {
  background: linear-gradient(135deg, #0b1a3a 0%, #0a4cb8 100%);
  color: #fff;
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.contact-info::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.contact-info > * { position: relative; z-index: 2; }
.contact-info h3 { font-size: 24px; margin-bottom: 16px; font-weight: 700; }
.contact-info > p { color: rgba(255,255,255,0.8); margin-bottom: 32px; line-height: 1.8; }

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.contact-item:last-child { border-bottom: none; }
.contact-item-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-item-text small {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}
.contact-item-text strong { font-size: 16px; color: #fff; font-weight: 600; display: block; line-height: 1.5; }
.contact-item-text strong.big { font-size: 22px; color: #00c2ff; font-weight: 800; }

.contact-form {
  background: #fff;
  padding: 48px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.contact-form h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.contact-form > p { color: var(--text-soft); font-size: 14px; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg-soft);
  transition: all .2s;
  color: var(--text);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(10, 76, 184, 0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ============== 响应式 ============== */
@media (max-width: 960px) {
  .hero h1 { font-size: 38px; }
  .section-title { font-size: 28px; }
  .services-grid, .case-grid { grid-template-columns: 1fr 1fr; }
  .advantages, .values-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .service-detail, .contact-grid, .about-intro { grid-template-columns: 1fr; gap: 32px; }
  .service-detail.reverse { direction: ltr; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 640px) {
  .nav { display: none; }
  .header-cta { padding: 8px 14px; font-size: 13px; }
  .section { padding: 56px 0; }
  .hero { padding: 64px 0; }
  .hero h1 { font-size: 30px; }
  .hero p { font-size: 16px; }
  .page-hero h1 { font-size: 28px; }
  .services-grid, .case-grid, .advantages, .values-grid, .process-grid, .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; text-align: center; }
  .contact-info, .contact-form { padding: 32px 24px; }
}