/* ======================================
   三点测绘科技官网 - 简约大气风格
   ====================================== */

/* ---- 全局重置 & 变量 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #1a6fc4;
  --primary-dk: #0f4c8a;
  --primary-lt: #e8f2fc;
  --accent:     #00b4d8;
  --dark:       #0f1923;
  --dark2:      #162635;
  --card-bg:    #ffffff;
  --bg:         #f5f7fa;
  --bg-dark:    #eaeff5;
  --border:     #dce3ec;
  --border-lt:  #e8edf3;
  --text:       #1a2332;
  --text2:      #4a5568;
  --text3:      #8896a6;
  --white:      #ffffff;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.1);
  --radius:     8px;
  --radius-lg:  14px;
  --transition: 0.3s ease;
  --nav-h:      68px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 粒子画布 - 浅色背景粒子 */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ================================
   导航栏
   ================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  transition: var(--transition);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-lt);
}
#navbar.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: var(--shadow-md);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
}

/* Logo */
.logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit;
}
.logo-icon { display: flex; align-items: center; }
.logo-text-group { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn {
  font-size: 16px; font-weight: 700; color: var(--dark);
  letter-spacing: 1px;
}
.logo-en {
  font-size: 9px; letter-spacing: 2px; color: var(--text3);
  font-family: 'Rajdhani', sans-serif; text-transform: uppercase;
  margin-top: 1px;
}

/* 导航链接 */
.nav-links { display: flex; gap: 0; }
.nav-link {
  display: block; padding: 8px 20px;
  font-size: 14px; font-weight: 500;
  color: var(--text2); text-decoration: none;
  border-radius: 6px; cursor: pointer;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-lt);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 8px; border: none; background: none;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  position: absolute; top: var(--nav-h); left: 0; right: 0;
  background: rgba(255,255,255,0.98);
  border-bottom: 1px solid var(--border);
  flex-direction: column; padding: 8px 0;
}
.mobile-menu a {
  padding: 14px 24px; font-size: 15px; color: var(--text2);
  cursor: pointer; transition: var(--transition);
}
.mobile-menu a:hover { color: var(--primary); background: var(--primary-lt); }
.mobile-menu.open { display: flex; }

/* ================================
   页面容器
   ================================ */
.page { display: none; min-height: 100vh; position: relative; z-index: 2; }
.page.active { display: block; }

/* ================================
   Section 通用
   ================================ */
section { padding: 80px 0; }
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--primary); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 12px;
  font-weight: 600;
}
.section-tag::before {
  content: '';
  display: inline-block; width: 24px; height: 2px;
  background: var(--primary);
}
.section-title {
  font-size: clamp(24px, 3vw, 36px); font-weight: 700;
  line-height: 1.3; margin-bottom: 14px;
  color: var(--dark);
}
.section-desc {
  font-size: 15px; color: var(--text3); max-width: 600px;
  margin: 0 auto; line-height: 1.8;
}

/* ================================
   页面Hero（子页面顶部）
   ================================ */
.page-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(26,111,196,0.2) 0%, transparent 70%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .section-tag { color: var(--accent); }
.page-hero .section-tag::before { background: var(--accent); }
.page-hero-title {
  font-size: clamp(28px, 4vw, 42px); font-weight: 700;
  margin-bottom: 12px; color: var(--white);
}
.page-hero > .container > p {
  font-size: 15px; color: rgba(255,255,255,0.7); margin-top: 8px;
}

/* ================================
   首页 - Hero
   ================================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  background: linear-gradient(160deg, var(--dark) 0%, #0c2340 50%, var(--dark2) 100%);
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero-scan-line {
  position: absolute; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, rgba(26,111,196,0.08), transparent);
  animation: scanline 6s linear infinite;
}
@keyframes scanline {
  0%   { top: -200px; }
  100% { top: 100%; }
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 700px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 100px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  font-size: 13px; color: rgba(255,255,255,0.8);
  letter-spacing: 1px; margin-bottom: 28px;
}
.dot-pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}
.hero-title {
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 700; line-height: 1.2;
  color: var(--white); margin-bottom: 20px;
}
.hero-title .line1, .hero-title .line3 {
  display: block; color: rgba(255,255,255,0.85);
}
.hero-title .line2 {
  display: block;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  font-size: clamp(34px, 5vw, 58px);
}
.gradient-text {
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 16px; color: rgba(255,255,255,0.65);
  line-height: 1.9; margin-bottom: 32px;
  max-width: 520px;
}
.hero-btns {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 56px;
}

/* 按钮 */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 8px;
  background: var(--primary);
  color: #fff; font-size: 15px; font-weight: 600;
  text-decoration: none; border: none; cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(26,111,196,0.3);
}
.btn-primary:hover {
  background: var(--primary-dk);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(26,111,196,0.4);
}
.btn-primary.large { padding: 16px 40px; font-size: 16px; }
.btn-primary.full { width: 100%; justify-content: center; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.85); font-size: 15px; font-weight: 500;
  text-decoration: none; background: transparent; cursor: pointer;
  transition: var(--transition);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

/* Hero 三核心 */
.hero-three-cores {
  display: flex; gap: 0; align-items: stretch;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.core-item {
  flex: 1; display: flex; align-items: center; gap: 14px;
  padding: 18px 24px;
}
.core-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: rgba(0,180,216,0.12);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.core-name { font-size: 14px; font-weight: 600; color: rgba(255,255,255,0.9); }
.core-sub { font-size: 11px; color: rgba(255,255,255,0.5); margin-top: 2px; }
.core-divider {
  width: 1px;
  background: rgba(255,255,255,0.1);
  flex-shrink: 0;
}

/* Hero 数据面板 */
.hero-data-panel {
  position: absolute;
  right: 40px; top: 50%;
  transform: translateY(-50%);
  background: rgba(15,25,35,0.9);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  min-width: 220px;
  backdrop-filter: blur(10px);
}
.data-panel-header {
  font-size: 10px; letter-spacing: 2px; color: var(--text3);
  margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
}
.status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s ease infinite;
}
.data-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 13px; color: rgba(255,255,255,0.6);
}
.data-row:last-child { border-bottom: none; }
.data-val {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; color: rgba(255,255,255,0.9);
  font-size: 14px;
}
.data-val.green { color: #22c55e; }

/* ================================
   首页 - 数字统计
   ================================ */
.stats-section {
  padding: 60px 0;
  background: var(--white);
  border-bottom: 1px solid var(--border-lt);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-card {
  text-align: center; padding: 24px 16px;
}
.stat-num {
  font-size: 42px; font-weight: 700;
  font-family: 'Rajdhani', sans-serif;
  color: var(--primary);
  line-height: 1;
}
.stat-num sup {
  font-size: 20px; font-weight: 600;
  color: var(--primary);
}
.stat-label {
  font-size: 15px; font-weight: 600;
  color: var(--text); margin-top: 8px;
}
.stat-sub {
  font-size: 12px; color: var(--text3); margin-top: 4px;
}

/* ================================
   首页 - 核心业务
   ================================ */
.biz-section { background: var(--bg); }
.biz-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.biz-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative; overflow: hidden;
  transition: var(--transition);
  cursor: default;
}
.biz-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.biz-card.featured {
  border-top: 3px solid var(--primary);
}
.biz-num {
  position: absolute; top: 16px; right: 20px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 48px; font-weight: 700;
  color: var(--bg); line-height: 1;
  user-select: none;
}
.biz-icon {
  width: 48px; height: 48px; border-radius: 10px;
  background: var(--primary-lt);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.biz-card h3 {
  font-size: 16px; font-weight: 700; margin-bottom: 8px;
  color: var(--dark);
}
.biz-card p { font-size: 13px; color: var(--text3); line-height: 1.7; }
.biz-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px;
}
.biz-tags span {
  font-size: 11px; padding: 3px 10px; border-radius: 100px;
  background: var(--bg); color: var(--text3);
  border: 1px solid var(--border-lt);
}

/* ================================
   首页 - 明星产品
   ================================ */
.products-section { background: var(--white); }
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative; overflow: hidden;
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card.featured-product {
  border-top: 3px solid var(--accent);
}
.product-badge {
  display: inline-block; font-size: 10px; font-weight: 700;
  letter-spacing: 1.5px; color: var(--primary);
  padding: 3px 10px; border-radius: 4px;
  background: var(--primary-lt); margin-bottom: 8px;
}
.product-model {
  font-family: 'Rajdhani', sans-serif;
  font-size: 32px; font-weight: 700; color: var(--dark);
  line-height: 1; margin-bottom: 6px;
}
.product-card h3 {
  font-size: 14px; font-weight: 600; color: var(--text3);
  letter-spacing: 0.5px; margin-bottom: 12px;
}
.product-desc {
  font-size: 13px; color: var(--text3); line-height: 1.7;
  margin-bottom: 16px;
}
.product-specs {
  border-top: 1px solid var(--border-lt);
  padding-top: 14px;
}
.spec {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 0; font-size: 12px;
}
.spec span:first-child { color: var(--text3); }
.spec span:last-child { color: var(--text); font-weight: 500; }
.product-glow { display: none; }

/* ================================
   首页 - 资质荣誉
   ================================ */
.honor-section { background: var(--bg); }
.honor-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.honor-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px; text-align: center;
  transition: var(--transition);
}
.honor-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.honor-icon { font-size: 28px; margin-bottom: 8px; }
.honor-text {
  font-size: 13px; font-weight: 600; color: var(--text);
  line-height: 1.4;
}

/* ================================
   首页 - 合作伙伴
   ================================ */
.partners-section {
  padding: 64px 0;
  background: var(--white);
  border-top: 1px solid var(--border-lt);
}
.partners-strip {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 8px;
}
.partner-item {
  padding: 10px 20px; border-radius: 6px;
  font-size: 14px; font-weight: 500;
  color: var(--text2); background: var(--bg);
  border: 1px solid var(--border-lt);
  transition: var(--transition);
}
.partner-item:hover {
  color: var(--primary); border-color: var(--primary);
  background: var(--primary-lt);
}
.partner-sep {
  color: var(--border); font-size: 18px; padding: 0 4px;
}

/* ================================
   首页 - CTA
   ================================ */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
}
.cta-box {
  text-align: center; position: relative;
  padding: 48px 32px;
}
.cta-glow { display: none; }
.cta-box h2 {
  font-size: clamp(22px, 3vw, 32px); font-weight: 700;
  color: var(--white); margin-bottom: 14px;
}
.cta-box p {
  font-size: 15px; color: rgba(255,255,255,0.6);
  margin-bottom: 28px;
}

/* ================================
   关于我们 - 公司简介
   ================================ */
.about-intro-section { background: var(--white); padding: 80px 0; }
.about-intro-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: start;
}
.about-intro-text .section-tag { margin-bottom: 12px; }
.about-intro-text h2 {
  font-size: 28px; font-weight: 700; color: var(--dark);
  margin-bottom: 20px;
}
.about-intro-text p {
  font-size: 14.5px; color: var(--text2); line-height: 1.9;
  margin-bottom: 14px;
}
.about-intro-text strong { color: var(--dark); }
.about-intro-text em { color: var(--primary); font-style: normal; font-weight: 600; }

.about-info-cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.info-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px 18px;
  border: 1px solid var(--border-lt);
}
.info-label { font-size: 12px; color: var(--text3); margin-bottom: 4px; }
.info-val { font-size: 14px; font-weight: 600; color: var(--text); }

/* ================================
   关于我们 - 发展方针金字塔
   ================================ */
.strategy-section { background: var(--bg); }
.strategy-pyramid {
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; max-width: 800px; margin: 0 auto;
}
.strategy-level {
  display: flex; gap: 16px; width: 100%;
  justify-content: center;
}
.strategy-level.top { max-width: 400px; }
.strategy-level.mid { max-width: 600px; }
.strategy-level.bottom { max-width: 800px; }
.strategy-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px; text-align: center;
  flex: 1; transition: var(--transition);
}
.strategy-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.strategy-card.goal {
  border-top: 3px solid var(--primary);
  background: linear-gradient(135deg, var(--primary-lt), var(--card-bg));
}
.strategy-card.direction {
  border-left: 3px solid var(--accent);
}
.strategy-card.thing {
  border-bottom: 2px solid var(--border);
}
.strategy-label {
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: var(--primary); text-transform: uppercase;
  margin-bottom: 8px;
}
.strategy-content {
  font-size: 14px; color: var(--text2); line-height: 1.7; font-weight: 500;
}

/* ================================
   关于我们 - 发展历程时间轴
   ================================ */
.timeline-section { background: var(--white); }
.timeline {
  margin-top: 48px; position: relative;
  max-width: 900px; margin-left: auto; margin-right: auto;
}
.timeline::before {
  content: '';
  position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px; background: var(--border);
  transform: translateX(-50%);
}
.tl-item {
  display: flex; align-items: flex-start;
  margin-bottom: 36px; position: relative;
}
.tl-item.left { justify-content: flex-start; padding-right: calc(50% + 32px); text-align: right; }
.tl-item.right { justify-content: flex-end; padding-left: calc(50% + 32px); text-align: left; }
.tl-year {
  font-family: 'Rajdhani', sans-serif;
  font-size: 24px; font-weight: 700; color: var(--primary);
  margin-bottom: 6px;
}
.tl-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: var(--transition);
}
.tl-card:hover { box-shadow: var(--shadow-md); }
.tl-card h4 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.tl-card p { font-size: 13px; color: var(--text3); line-height: 1.7; }

/* 时间轴圆点 */
.tl-item::before {
  content: '';
  position: absolute; left: 50%; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--primary);
  transform: translateX(-50%);
  z-index: 1;
}

/* ================================
   关于我们 - 团队实力
   ================================ */
.team-section { background: var(--bg); }
.team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.team-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center;
  transition: var(--transition);
}
.team-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.team-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--primary-lt);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.team-card h3 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.team-card p { font-size: 13px; color: var(--text3); line-height: 1.6; }

/* ================================
   产品服务 - 机器人产品
   ================================ */
.robot-section { background: var(--bg); }
.robot-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.robot-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
  position: relative; overflow: hidden;
}
.robot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.robot-card.featured-robot {
  border-top: 3px solid #00c48c;
}
.robot-glow-border { display: none; }
.robot-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px;
}
.robot-badge {
  font-size: 10px; font-weight: 700; letter-spacing: 1.5px;
  padding: 3px 10px; border-radius: 4px;
}
.robot-badge.tunnel { background: #e8f2fc; color: var(--primary); }
.robot-badge.pipeline { background: #e6f9f0; color: #059669; }
.robot-badge.track { background: #fef3e2; color: #d97706; }
.robot-code {
  font-family: 'Rajdhani', sans-serif;
  font-size: 22px; font-weight: 700; color: var(--dark);
}
.robot-viz {
  display: flex; justify-content: center;
  margin-bottom: 20px;
}
.robot-circle {
  width: 100px; height: 100px;
  display: flex; align-items: center; justify-content: center;
}
.robot-card h3 {
  font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 2px;
}
.robot-card h4 {
  font-size: 14px; font-weight: 500; color: var(--text3); margin-bottom: 12px;
}
.robot-card > p {
  font-size: 13px; color: var(--text3); line-height: 1.7; margin-bottom: 16px;
}
.robot-features {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  margin-bottom: 16px;
}
.feature-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text2);
}
.f-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--primary); flex-shrink: 0;
}
.f-dot.green { background: #059669; }
.f-dot.orange { background: #d97706; }
.robot-scenes {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.robot-scenes span {
  font-size: 11px; padding: 4px 12px; border-radius: 100px;
  background: var(--bg); color: var(--text3);
  border: 1px solid var(--border-lt);
}

/* ================================
   产品服务 - AI平台
   ================================ */
.ai-section { background: var(--white); }
.ai-platform-box {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  align-items: start;
}
.ai-feature {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-lt);
}
.ai-feature:last-child { border-bottom: none; }
.ai-feat-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--primary-lt);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ai-feat-icon svg { stroke: var(--primary); }
.ai-feature h4 { font-size: 15px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.ai-feature p { font-size: 13px; color: var(--text3); line-height: 1.6; }

/* AI屏幕模拟 */
.ai-screen {
  background: var(--dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
}
.ai-screen-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 11px; color: var(--text3);
}
.s-dot {
  width: 8px; height: 8px; border-radius: 50%;
}
.s-dot.red { background: #ef4444; }
.s-dot.yellow { background: #eab308; }
.s-dot.green2 { background: #22c55e; }
.ai-screen-body { padding: 20px; }
.ai-stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin-bottom: 20px;
}
.ai-stat {
  text-align: center; padding: 12px 8px;
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
}
.ai-stat-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 24px; font-weight: 700; color: var(--accent);
}
.ai-stat-label { font-size: 10px; color: var(--text3); margin-top: 2px; }
.ai-chart-area {
  height: 80px; background: rgba(255,255,255,0.03);
  border-radius: 8px; margin-bottom: 16px;
  position: relative; overflow: hidden;
  display: flex; align-items: flex-end; padding: 8px 12px; gap: 8px;
}
.chart-bar-group {
  display: flex; gap: 8px; align-items: flex-end; width: 100%;
}
.chart-bar {
  flex: 1; border-radius: 3px 3px 0 0;
  background: linear-gradient(to top, var(--primary), var(--accent));
  opacity: 0.7;
}
.chart-line-overlay { display: none; }
.ai-log { display: flex; flex-direction: column; gap: 6px; }
.log-item {
  display: flex; gap: 12px; align-items: center;
  font-size: 11px; padding: 6px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 4px;
}
.log-time { color: var(--text3); font-family: 'Rajdhani', monospace; flex-shrink: 0; }
.log-msg.ok { color: #22c55e; }
.log-msg.warn { color: #eab308; }

/* ================================
   产品服务 - 硬件产品系列
   ================================ */
.hardware-section { background: var(--bg); }
.hardware-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.hw-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.hw-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.hw-series {
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  color: var(--primary); margin-bottom: 10px;
}
.hw-card h3 {
  font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px;
}
.hw-card p {
  font-size: 13px; color: var(--text3); line-height: 1.7; margin-bottom: 14px;
}
.hw-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.hw-tags span {
  font-size: 11px; padding: 3px 10px; border-radius: 100px;
  background: var(--bg); color: var(--text3);
  border: 1px solid var(--border-lt);
}

/* ================================
   产品服务 - 测绘资质
   ================================ */
.qualification-section { background: var(--white); }
.qual-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.qual-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 16px 18px;
  border: 1px solid var(--border-lt);
  transition: var(--transition);
}
.qual-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--border);
}
.qual-level {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700;
  flex-shrink: 0;
}
.qual-level.A { background: var(--primary-lt); color: var(--primary); }
.qual-level.B { background: #f0f0f0; color: var(--text3); }
.qual-item > div:last-child { font-size: 14px; font-weight: 500; color: var(--text); }

/* ================================
   联系我们
   ================================ */
.contact-section { background: var(--bg); padding: 80px 0; }
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px;
  align-items: start;
}
.contact-info h2,
.contact-form-wrap h2 {
  font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 24px;
}
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.ci-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--primary-lt);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ci-icon svg { stroke: var(--primary); }
.ci-label { font-size: 12px; color: var(--text3); margin-bottom: 3px; }
.ci-val { font-size: 14px; font-weight: 500; color: var(--text); }

/* 行业协会 */
.assoc-box {
  margin-top: 24px; padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.assoc-title {
  font-size: 13px; font-weight: 700; color: var(--dark); margin-bottom: 12px;
}
.assoc-list { display: flex; flex-direction: column; gap: 8px; }
.assoc-item {
  font-size: 13px; color: var(--text2); padding: 6px 0;
  border-bottom: 1px solid var(--border-lt);
}
.assoc-item:last-child { border-bottom: none; }

/* 联系表单 */
.contact-form-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}
.form-group {
  margin-bottom: 18px;
}
.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%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit; font-size: 14px;
  padding: 11px 14px;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,111,196,0.1);
}
.form-group select option { background: var(--white); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-focus-line { display: none; }

/* ================================
   页脚
   ================================ */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
  position: relative; z-index: 2;
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px;
}
.footer-logo {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.footer-logo svg { flex-shrink: 0; }
.footer-logo span {
  font-size: 15px; font-weight: 600; color: var(--white);
}
.footer-brand p {
  font-size: 13px; color: rgba(255,255,255,0.5);
  line-height: 1.8; margin-top: 12px;
}
.footer-addr {
  font-size: 12px; color: rgba(255,255,255,0.4); margin-top: 6px;
}
.footer-nav {
  display: contents;
}
.footer-nav-title {
  font-size: 14px; font-weight: 600; color: var(--white);
  margin-bottom: 16px;
}
.footer-nav-col a {
  display: block; font-size: 13px;
  color: rgba(255,255,255,0.5);
  text-decoration: none; margin-bottom: 10px;
  cursor: pointer; transition: color 0.25s;
}
.footer-nav-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  margin-top: 40px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
}
.footer-bottom-row {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 12px 20px;
}
.footer-bottom span {
  font-size: 12px; color: rgba(255,255,255,0.35);
}
.footer-bottom a {
  font-size: 12px; color: rgba(255,255,255,0.35);
  text-decoration: none; transition: color 0.2s;
}
.footer-bottom a:hover { color: rgba(255,255,255,0.55); }

/* ================================
   Toast
   ================================ */
.toast {
  position: fixed; bottom: 32px; right: 32px;
  background: var(--white);
  border: 1px solid #d1fae5;
  color: #059669;
  padding: 14px 24px; border-radius: 8px;
  font-size: 14px; font-weight: 500;
  z-index: 9999; transform: translateY(100px); opacity: 0;
  transition: all 0.4s ease;
  box-shadow: var(--shadow-lg);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ================================
   入场动画
   ================================ */
.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ================================
   响应式
   ================================ */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-data-panel { display: none; }
  .ai-platform-box { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links { display: none; }
  .mobile-menu.open { display: flex; }

  .hero-three-cores { flex-direction: column; }
  .core-divider { width: 100%; height: 1px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro-grid { grid-template-columns: 1fr; }
  .about-info-cards { grid-template-columns: 1fr; }
  .strategy-level { flex-direction: column; }
  .timeline::before { left: 20px; }
  .tl-item { padding-left: 52px !important; padding-right: 0 !important; text-align: left !important; }
  .tl-item::before { left: 20px; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .robot-grid { grid-template-columns: 1fr; }
  .hardware-grid { grid-template-columns: 1fr; }
  .qual-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}