/* ===== 闪甸 · 智慧城市官网 ===== */
:root {
  --green: #1d8dff;
  --green-dark: #0a2e86;
  --green-light: #e8f2ff;
  --green-mint: #f4f8ff;
  --green-gradient: linear-gradient(135deg, #0b2a78 0%, #1267e8 52%, #27d7ff 100%);
  --green-banner: linear-gradient(90deg, #071433 0%, #0d3fa6 48%, #1d8dff 100%);
  --gold: #f6c45d;
  --dark: #08152f;
  --text: #17233f;
  --text-muted: #5b6680;
  --text-light: #8b96ad;
  --bg: #ffffff;
  --bg-alt: #f5f8ff;
  --border: #dbe6f7;
  --shadow: 0 4px 24px rgba(15, 82, 186, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 82, 186, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: all var(--transition);
}

.header .nav { height: 72px; }

.header:not(.scrolled) {
  background: transparent;
}

.header:not(.scrolled) .nav-links a {
  color: #fff;
}

.header:not(.scrolled) .nav-toggle span {
  background: #fff;
}

.header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.header.scrolled .nav-links a { color: var(--text-muted); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 56px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer .logo-img {
  height: 72px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.section-banner[id],
section[id] {
  scroll-margin-top: 72px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active { color: var(--green) !important; }

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: var(--transition);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.btn-primary {
  background: var(--green-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(29,141,255,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(29,141,255,0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

.btn-outline-dark {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}

.btn-outline-dark:hover {
  background: var(--green);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--green);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url("../assets/banner1.png") center top / cover no-repeat;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(255,255,255,0.55) 0%,
    rgba(255,255,255,0.18) 38%,
    rgba(255,255,255,0) 70%
  );
}

.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 100px;
  padding-bottom: 80px;
}

.hero-content { max-width: 720px; }

.hero-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(29,141,255,0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(29,141,255,0.25);
  border-radius: 50px;
  color: var(--green-dark);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: bounce 2s infinite;
}

.hero-scroll::after {
  content: "";
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(29,141,255,0.5), transparent);
}

.page-home .header:not(.scrolled) .nav-links a {
  color: var(--text);
}

.page-home .header:not(.scrolled) .nav-toggle span {
  background: var(--dark);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 区块编号标题 ===== */
.section-banner {
  background: var(--green-banner);
  padding: 18px 0;
  position: relative;
  overflow: hidden;
}

.section-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.section-banner .container {
  display: flex;
  align-items: baseline;
  gap: 16px;
  position: relative;
}

.section-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(255,255,255,0.3);
  line-height: 1;
}

.section-banner-title {
  color: #fff;
}

.section-banner-title h2 {
  font-size: 1.5rem;
  font-weight: 800;
}

.section-banner-title span {
  font-size: 0.8rem;
  opacity: 0.75;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: block;
  margin-top: 2px;
}

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 14px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.02rem;
}

/* ===== 数据统计 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: var(--green-gradient);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.stat-block {
  padding: 40px 24px;
  text-align: center;
  color: #fff;
  position: relative;
}

.stat-block:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: rgba(255,255,255,0.25);
}

.stat-block strong {
  display: block;
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-block span {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* ===== 企业介绍 ===== */
.about-intro {
  max-width: 760px;
  margin-bottom: 48px;
}

.about-intro-wide {
  max-width: 860px;
}

.about-banner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #f5f7f6;
}

.about-banner img {
  width: 100%;
  height: auto;
  display: block;
}

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

.about-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.4;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.98rem;
}

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

.about-visual img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.about-visual-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  padding: 16px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-visual-badge strong {
  display: block;
  font-size: 1.1rem;
  color: var(--green);
  font-weight: 800;
}

.about-visual-badge span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== 产品卡片 ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-card-img {
  height: 200px;
  background: var(--green-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-img::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(29,141,255,0.08), rgba(39,215,255,0.15));
}

.product-card-img::after,
.case-card::before,
.contact-card-icon::before,
.qr-box::before,
.tech-icon::before,
.mascot-feature-icon::before {
  content: "";
  display: block;
  background: linear-gradient(135deg, #1d8dff 0%, #0a2e86 100%);
  color: #fff;
  box-shadow: inset 0 0 18px rgba(39, 215, 255, 0.25), 0 10px 26px rgba(10, 46, 134, 0.18);
}

.product-card-img::after {
  width: 104px;
  height: 104px;
  border-radius: 24px;
  position: relative;
  z-index: 1;
  font-size: 2rem;
}

.product-card-img[data-icon]::after,
.case-card[data-icon]::before,
.contact-card-icon[data-icon]::before,
.qr-box[data-icon]::before,
.tech-icon[data-icon]::before,
.mascot-feature-icon[data-icon]::before {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  letter-spacing: 0;
}

.product-card-img[data-icon="city"]::after { content: "城"; }
.product-card-img[data-icon="traffic"]::after { content: "交"; }
.product-card-img[data-icon="security"]::after { content: "安"; }

.product-card-body {
  padding: 28px 24px;
}

.product-card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-tag {
  padding: 4px 12px;
  background: var(--green-light);
  color: var(--green);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* ===== AI 数字中枢区域 ===== */
.mascot-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
  background:
    radial-gradient(circle at 18% 18%, rgba(39, 215, 255, 0.34), transparent 34%),
    radial-gradient(circle at 76% 8%, rgba(246, 196, 93, 0.2), transparent 28%),
    linear-gradient(135deg, #071433 0%, #0a2463 54%, #0f52ba 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid rgba(29, 141, 255, 0.28);
  box-shadow: 0 18px 48px rgba(8, 21, 47, 0.18);
  overflow: hidden;
  position: relative;
}

.mascot-visual {
  text-align: center;
}

.mascot-char {
  width: 180px;
  height: 180px;
  margin: 0 auto;
  border-radius: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 0;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.22), rgba(255,255,255,0.04)),
    linear-gradient(135deg, #1d8dff 0%, #0a2e86 58%, #071433 100%);
  border: 1px solid rgba(255,255,255,0.28);
  box-shadow:
    0 0 0 10px rgba(29, 141, 255, 0.1),
    0 18px 42px rgba(2, 12, 36, 0.35),
    inset 0 0 28px rgba(39, 215, 255, 0.22);
  animation: float 3s ease-in-out infinite;
  position: relative;
}

.mascot-char::before,
.mascot-char::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
}

.mascot-char::before {
  inset: 24px;
  border: 2px solid rgba(246, 196, 93, 0.72);
  transform: rotate(28deg);
}

.mascot-char::after {
  width: 18px;
  height: 18px;
  right: 22px;
  top: 22px;
  background: var(--gold);
  box-shadow: 0 0 24px rgba(246, 196, 93, 0.88);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.mascot-label {
  margin-top: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.mascot-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.mascot-feature {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: #fff;
  backdrop-filter: blur(10px);
}

.mascot-feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(29, 141, 255, 0.18);
  color: var(--gold);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.mascot-feature-icon::before {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  font-size: 0.78rem;
  background: linear-gradient(135deg, rgba(29, 141, 255, 0.9), rgba(10, 46, 134, 0.86));
}

.mascot-feature-icon[data-icon="cloud"]::before,
.tech-icon[data-icon="cloud"]::before { content: "云"; }
.mascot-feature-icon[data-icon="data"]::before,
.tech-icon[data-icon="data"]::before { content: "数"; }
.mascot-feature-icon[data-icon="iot"]::before,
.tech-icon[data-icon="iot"]::before { content: "联"; }
.mascot-feature-icon[data-icon="ai"]::before,
.tech-icon[data-icon="ai"]::before { content: "AI"; }

.mascot-feature h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.mascot-feature p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.78);
}

/* ===== 时间线 ===== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}

.timeline-item {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  gap: 0;
  margin-bottom: 48px;
  align-items: center;
}

.timeline-item:nth-child(even) .timeline-content { grid-column: 1; text-align: right; }
.timeline-item:nth-child(even) .timeline-dot { grid-column: 2; }
.timeline-item:nth-child(even) .timeline-year { grid-column: 3; text-align: left; }

.timeline-item:nth-child(odd) .timeline-year { grid-column: 1; text-align: right; }
.timeline-item:nth-child(odd) .timeline-dot { grid-column: 2; }
.timeline-item:nth-child(odd) .timeline-content { grid-column: 3; }

.timeline-dot {
  width: 20px;
  height: 20px;
  background: var(--green);
  border: 4px solid var(--green-light);
  border-radius: 50%;
  justify-self: center;
  box-shadow: 0 0 0 4px rgba(29,141,255,0.15);
  z-index: 1;
}

.timeline-year {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--green);
}

.timeline-content {
  background: #fff;
  padding: 24px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== 业务地图 ===== */
.map-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.map-visual {
  background: var(--green-mint);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-china {
  opacity: 0.15;
  color: var(--green);
  position: absolute;
  width: 260px;
  height: 180px;
  border: 2px solid currentColor;
  border-radius: 46% 54% 42% 58% / 48% 38% 62% 52%;
  transform: rotate(-8deg);
}

.map-china::before,
.map-china::after {
  content: "";
  position: absolute;
  border: 2px solid currentColor;
  border-radius: 999px;
}

.map-china::before {
  inset: 34px 42px;
}

.map-china::after {
  width: 54px;
  height: 54px;
  right: 24px;
  bottom: 22px;
}

.map-dots {
  position: relative;
  z-index: 1;
  width: 100%;
}

.map-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(29,141,255,0.2);
  animation: pulse 2s infinite;
}

.map-dot::after {
  content: attr(data-city);
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green-dark);
  white-space: nowrap;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(29,141,255,0.2); }
  50% { box-shadow: 0 0 0 12px rgba(29,141,255,0.1); }
}

.map-info h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}

.map-info p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.city-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.city-item {
  padding: 12px 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  transition: all var(--transition);
}

.city-item:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-light);
}

/* ===== 合作案例 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  background: var(--green-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.case-card::before {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  font-size: 1.1rem;
}

.case-card[data-icon="factory"]::before { content: "工"; }
.case-card[data-icon="screen"]::before { content: "屏"; }
.case-card[data-icon="traffic"]::before { content: "路"; }
.case-card[data-icon="logistics"]::before { content: "仓"; }

.case-card:hover { transform: scale(1.03); }

.case-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,20,51,0.82), transparent);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: opacity var(--transition);
}

.case-card:hover .case-card-overlay { opacity: 1; }

.case-card-overlay span {
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
}

.partners-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.partner-logo {
  padding: 16px 32px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--transition);
}

.partner-logo:hover {
  border-color: var(--green);
  color: var(--green);
}

/* ===== 联系 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-cards {
  display: grid;
  gap: 16px;
}

.contact-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow);
}

.contact-card-icon {
  width: 52px;
  height: 52px;
  background: var(--green-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-card-icon::before {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  font-size: 0.78rem;
}

.contact-card-icon[data-icon="phone"]::before { content: "电"; }
.contact-card-icon[data-icon="mail"]::before { content: "邮"; }
.contact-card-icon[data-icon="location"]::before { content: "址"; }
.contact-card-icon[data-icon="time"]::before { content: "时"; }
.contact-card-icon[data-icon="business"]::before { content: "商"; }
.contact-card-icon[data-icon="support"]::before { content: "技"; }

.contact-card-text strong {
  display: block;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 4px;
  font-weight: 500;
}

.contact-card-text span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
}

.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.contact-form-wrap h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.contact-form-wrap > p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 28px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--bg);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(29,141,255,0.1);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.qr-section {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin-top: 48px;
}

.qr-item {
  text-align: center;
}

.qr-box {
  width: 140px;
  height: 140px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto 12px;
}

.qr-box::before {
  width: 74px;
  height: 74px;
  border-radius: 22px;
  font-size: 1rem;
}

.qr-box[data-icon="wechat"]::before { content: "微"; }
.qr-box[data-icon="app"]::before { content: "APP"; }
.qr-box[data-icon="chat"]::before { content: "企"; }

.qr-item span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== 主体公司 ===== */
.company-entity {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.company-entity-main h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}

.company-entity-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 24px;
  line-height: 1.8;
}

.company-entity-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.company-tag {
  padding: 6px 16px;
  background: var(--green-light);
  color: var(--green);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
}

.company-entity-info {
  display: grid;
  gap: 16px;
}

.company-info-item {
  padding: 16px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.company-info-item strong {
  display: block;
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 1px;
}

.company-info-item span {
  font-size: 0.92rem;
  color: var(--dark);
  font-weight: 500;
  line-height: 1.6;
}

/* ===== 页脚 Hero ===== */
.footer-hero {
  position: relative;
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}

.footer-hero-bg {
  position: absolute;
  inset: 0;
  background: url("../assets/banner3.png") center / cover no-repeat;
}

.footer-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,20,51,0.58), rgba(10,46,134,0.68));
}

.footer-hero .container { position: relative; z-index: 2; }

.footer-hero h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.footer-hero p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.65);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}


.footer-brand .logo {
  display: inline-block;
  margin-bottom: 14px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-col a:hover { color: var(--green); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== 页面 Hero ===== */
.page-hero {
  padding: 140px 0 80px;
  background: var(--green-banner);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-hero .container { position: relative; }

.page-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1.05rem;
  opacity: 0.85;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 技术优势 ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.tech-card {
  text-align: center;
  padding: 36px 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.tech-icon {
  width: 64px;
  height: 64px;
  background: var(--green-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 16px;
}

.tech-icon::before {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  font-size: 0.9rem;
}

.tech-icon[data-icon="network"]::before { content: "网"; }
.tech-icon[data-icon="secure"]::before { content: "安"; }
.tech-icon[data-icon="edge"]::before { content: "边"; }
.tech-icon[data-icon="module"]::before { content: "模"; }

.tech-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.tech-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { color: var(--text-muted) !important; }
  .nav-toggle { display: flex; }

  .about-grid, .map-section, .mascot-section, .contact-grid, .company-entity {
    grid-template-columns: 1fr;
  }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .timeline::before { left: 20px; }
  .timeline-item {
    grid-template-columns: 40px 1fr !important;
    gap: 16px;
  }
  .timeline-item .timeline-year,
  .timeline-item .timeline-content,
  .timeline-item .timeline-dot {
    grid-column: auto !important;
    text-align: left !important;
  }
  .timeline-dot { justify-self: start; }
}

@media (max-width: 768px) {
  .stats-row { grid-template-columns: 1fr; }
  .stat-block:not(:last-child)::after { display: none; }
  .products-grid, .tech-grid, .cases-grid, .mascot-features {
    grid-template-columns: 1fr;
  }
  .city-list { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .mascot-section { padding: 28px; }
  .company-entity { padding: 28px; }
}