/* ================================
   智擎云数智科技 - 企业官网样式表
   ================================ */

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

:root {
  /* 主色调 */
  --primary: #1a3a5c;
  --primary-dark: #0f2540;
  --primary-light: #2d5a8c;
  /* 强调色 */
  --accent: #00a8e8;
  --accent-dark: #0077b6;
  --accent-light: #90e0ef;
  /* 文字色 */
  --text-dark: #1a1a2e;
  --text-body: #4a5568;
  --text-light: #8898aa;
  --text-white: #ffffff;
  /* 背景色 */
  --bg-white: #ffffff;
  --bg-light: #f7fafc;
  --bg-gray: #edf2f7;
  --bg-dark: #0f2540;
  /* 边框 */
  --border: #e2e8f0;
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.14);
  --shadow-accent: 0 8px 32px rgba(0, 168, 232, 0.25);
  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #1a3a5c 0%, #0077b6 100%);
  --gradient-accent: linear-gradient(135deg, #00a8e8 0%, #0077b6 100%);
  --gradient-hero: linear-gradient(135deg, #0f2540 0%, #1a3a5c 40%, #0077b6 100%);
  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;
  /* 过渡 */
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  /* 布局 */
  --container: 1200px;
  --nav-h: 72px;
}

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

body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

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

/* ---------- Typography ---------- */
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 48px;
}

.section-title .accent {
  color: var(--accent);
}

.section-header {
  margin-bottom: 56px;
}

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 168, 232, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn-dark {
  background: var(--primary);
  color: #fff;
}

.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 44px;
  font-size: 1.05rem;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  z-index: 1000;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  transition: var(--transition);
}

.navbar.scrolled .logo {
  color: var(--primary);
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 10px;
  color: #fff;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-accent);
}

.logo-img {
  height: 42px;
  width: auto;
  border-radius: 8px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .name {
  font-size: 1.05rem;
  letter-spacing: 0.5px;
}

.logo-text .sub {
  font-size: 0.65rem;
  font-weight: 400;
  opacity: 0.7;
  letter-spacing: 2px;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  position: relative;
  padding: 8px 20px;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-full);
  transition: var(--transition);
}

.navbar.scrolled .nav-link {
  color: var(--text-body);
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.navbar.scrolled .nav-link:hover {
  color: var(--primary);
  background: var(--bg-gray);
}

.nav-link.active {
  color: #fff;
}

.navbar.scrolled .nav-link.active {
  color: var(--accent);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

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

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--primary);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: var(--nav-h);
}

/* Hero background pattern */
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 168, 232, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(144, 224, 239, 0.12) 0%, transparent 40%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(to top, var(--bg-white), transparent);
  pointer-events: none;
}

/* Floating shapes */
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.06;
  background: #fff;
  animation: float 8s ease-in-out infinite;
}

.hero-shape:nth-child(1) {
  width: 300px;
  height: 300px;
  top: 10%;
  right: 8%;
  animation-delay: 0s;
}

.hero-shape:nth-child(2) {
  width: 180px;
  height: 180px;
  bottom: 20%;
  left: 5%;
  animation-delay: 2s;
}

.hero-shape:nth-child(3) {
  width: 120px;
  height: 120px;
  top: 50%;
  right: 30%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero h1 .highlight {
  position: relative;
  display: inline-block;
  color: var(--accent-light);
}

.hero-desc {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 580px;
}

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

.hero-stats {
  display: flex;
  gap: 56px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat .num {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat .num .plus {
  color: var(--accent);
}

.hero-stat .label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 8px;
}

/* ---------- Page Banner (sub pages) ---------- */
.page-banner {
  position: relative;
  padding: calc(var(--nav-h) + 80px) 0 80px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 70% 30%, rgba(0, 168, 232, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.page-banner .breadcrumb a:hover {
  color: var(--accent-light);
}

.page-banner .breadcrumb .sep {
  opacity: 0.4;
}

.page-banner .breadcrumb .current {
  color: var(--accent-light);
}

/* ---------- Section ---------- */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-light);
}

/* ---------- Intro / About Block ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.intro-text h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
  line-height: 1.4;
}

.intro-text p {
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.9;
}

.intro-features {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.intro-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.intro-feature .check {
  width: 28px;
  height: 28px;
  min-width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 50%;
  color: #fff;
  font-size: 0.8rem;
  margin-top: 2px;
}

.intro-feature .text strong {
  color: var(--text-dark);
  font-size: 1rem;
}

.intro-feature .text span {
  display: block;
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 2px;
}

/* Visual block */
.intro-visual {
  position: relative;
}

.visual-card {
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.visual-card::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 168, 232, 0.2), transparent);
  border-radius: 50%;
}

.visual-card .big-num {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 8px;
}

.visual-card .big-num .plus {
  color: var(--accent);
}

.visual-card .big-label {
  font-size: 0.95rem;
  opacity: 0.7;
  margin-bottom: 32px;
}

.visual-card .info-row {
  display: flex;
  justify-content: space-between;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.9rem;
}

.visual-card .info-row .val {
  font-weight: 600;
  color: var(--accent-light);
}

/* 业务板块标识 */
.service-badge {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(0, 168, 232, 0.1);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

/* ---------- Services Cards ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 168, 232, 0.1), rgba(0, 119, 182, 0.05));
  border-radius: var(--radius);
  margin-bottom: 24px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--gradient-accent);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--accent);
  transition: var(--transition);
}

.service-card:hover .service-icon svg {
  stroke: #fff;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.service-card .tag {
  padding: 4px 12px;
  background: var(--bg-gray);
  color: var(--primary-light);
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

/* ---------- Why Choose Us ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}

.why-item {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  background: #fff;
  transition: var(--transition);
}

.why-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.why-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: var(--shadow-accent);
}

.why-icon svg {
  width: 34px;
  height: 34px;
  stroke: #fff;
}

.why-item h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.why-item p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  position: relative;
  padding: 80px 0;
  background: var(--gradient-primary);
  overflow: hidden;
  text-align: center;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(0, 168, 232, 0.2), transparent 40%),
    radial-gradient(circle at 85% 50%, rgba(144, 224, 239, 0.15), transparent 40%);
}

.cta-banner .container {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
}

/* ---------- About Page: Timeline ---------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

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

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 48px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item .dot {
  position: absolute;
  top: 6px;
  width: 16px;
  height: 16px;
  background: #fff;
  border: 3px solid var(--accent);
  border-radius: 50%;
  z-index: 2;
}

.timeline-item:nth-child(odd) .dot {
  right: -8px;
}

.timeline-item:nth-child(even) .dot {
  left: -8px;
}

.timeline-item .year {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

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

.timeline-item .content:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.timeline-item .content h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.timeline-item .content p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---------- Values Cards ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.value-card {
  text-align: center;
  padding: 48px 32px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.value-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.value-card .num {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.9;
}

.value-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.value-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ---------- Products Page: Detail Blocks ---------- */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 100px;
}

.product-detail:last-child {
  margin-bottom: 0;
}

.product-detail.reverse .product-info {
  order: 2;
}

.product-info .product-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 168, 232, 0.1);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.product-info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.product-info p {
  color: var(--text-body);
  line-height: 1.9;
  margin-bottom: 24px;
}

.product-features {
  display: grid;
  gap: 16px;
}

.product-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.product-feature .icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: 6px;
  color: #fff;
  font-size: 0.7rem;
  margin-top: 3px;
}

.product-feature .text {
  font-size: 0.92rem;
  color: var(--text-body);
}

.product-feature .text strong {
  color: var(--text-dark);
}

/* Product Visual */
.product-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

.product-visual.bg-blue {
  background: linear-gradient(135deg, #1a3a5c, #2d5a8c);
}

.product-visual.bg-cyan {
  background: linear-gradient(135deg, #0077b6, #00a8e8);
}

.product-visual.bg-teal {
  background: linear-gradient(135deg, #0f2540, #0077b6);
}

.product-visual.bg-purple {
  background: linear-gradient(135deg, #1a3a5c, #0077b6);
}

.product-visual.bg-green {
  background: linear-gradient(135deg, #0077b6, #48cae4);
}

.product-visual .visual-content {
  text-align: center;
  color: #fff;
  z-index: 2;
  position: relative;
}

.product-visual .visual-content .emoji {
  font-size: 4rem;
  margin-bottom: 20px;
  display: block;
}

.product-visual .visual-content h4 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-visual .visual-content p {
  font-size: 0.9rem;
  opacity: 0.8;
}

.product-visual::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -20%;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent);
  border-radius: 50%;
}

/* ---------- Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
}

.contact-info-list {
  display: grid;
  gap: 28px;
  margin-top: 40px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.contact-info-item .icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 168, 232, 0.1), rgba(0, 119, 182, 0.05));
  border-radius: var(--radius);
}

.contact-info-item .icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
}

.contact-info-item .label {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.contact-info-item .value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* Contact Form */
.contact-form {
  background: #fff;
  padding: 48px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-group label .req {
  color: #e53e3e;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(0, 168, 232, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-message {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 20px;
  display: none;
}

.form-message.success {
  display: block;
  background: #e6fffa;
  color: #047857;
  border: 1px solid #99e6c8;
}

.form-message.error {
  display: block;
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fbb5b5;
}

/* Map */
.map-section {
  margin-top: 80px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.map-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, #1a3a5c, #0077b6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.map-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.map-placeholder .pin {
  font-size: 3rem;
  margin-bottom: 16px;
  animation: bounce 2s infinite;
  z-index: 2;
}

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

.map-placeholder .addr {
  font-size: 1.1rem;
  font-weight: 600;
  z-index: 2;
}

.map-placeholder .sub-addr {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-top: 8px;
  z-index: 2;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 20px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  transition: var(--transition);
  color: rgba(255, 255, 255, 0.6);
}

.footer-social a:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 24px;
}

.footer-col ul {
  display: grid;
  gap: 12px;
}

.footer-col ul a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 14px;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  min-width: 18px;
  stroke: var(--accent);
  margin-top: 3px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--accent-light);
}

/* ---------- Scroll Animation ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }

/* ---------- Scroll to top ---------- */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--gradient-accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: var(--shadow-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-4px);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.6rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
    align-items: stretch;
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-link {
    color: var(--text-body);
    padding: 14px 20px;
    border-radius: var(--radius-sm);
  }

  .nav-link:hover {
    background: var(--bg-gray);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero h1 { font-size: 2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-stats { gap: 32px; flex-wrap: wrap; }
  .hero-stat .num { font-size: 1.8rem; }

  .section { padding: 64px 0; }
  .section-title { font-size: 1.7rem; }

  .intro-grid,
  .product-detail,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-detail.reverse .product-info {
    order: 0;
  }

  .timeline::before { left: 20px; }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 56px;
    padding-right: 0;
  }
  .timeline-item .dot {
    left: 12px !important;
    right: auto !important;
  }

  .form-row { grid-template-columns: 1fr; }

  .contact-form { padding: 32px 24px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .page-banner h1 { font-size: 2rem; }
  .visual-card { padding: 32px; }
}