/* ==========================================================
   天津启源数智科技有限公司 - 企业官网样式
   ========================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #1668dc;
  --primary-dark: #0f4da8;
  --primary-light: #e8f1fd;
  --accent: #00b4d8;
  --accent-light: #e0f7fb;
  --dark: #0d1b2a;
  --dark-2: #14263c;
  --gray-100: #f8f9fb;
  --gray-200: #eef1f6;
  --gray-300: #dde3ec;
  --gray-400: #b6bfcd;
  --gray-500: #8a94a6;
  --gray-600: #5b6675;
  --gray-700: #3d4757;
  --gray-800: #232c3a;
  --text: #2b3442;
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(13, 27, 42, 0.06);
  --shadow-md: 0 6px 20px rgba(13, 27, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(13, 27, 42, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

/* ---------- 排版工具类 ---------- */
.section {
  padding: 88px 0;
}

.section-gray {
  background: var(--gray-100);
}

.section-dark {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  color: var(--white);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 100px;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-dark .section-tag {
  color: var(--accent);
  background: rgba(0, 180, 216, 0.15);
}

.section-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 14px;
}

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

.section-subtitle {
  font-size: 16px;
  color: var(--gray-500);
}

.section-dark .section-subtitle {
  color: rgba(255, 255, 255, 0.65);
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #1457c0 0%, #0b3a86 100%);
  color: var(--white);
  text-shadow: 0 1px 2px rgba(0, 21, 61, 0.45);
  box-shadow: 0 6px 18px rgba(22, 104, 220, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(22, 104, 220, 0.45);
  color: var(--white);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

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

.btn-outline-white {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: var(--white);
  background: transparent;
}

.btn-outline-white:hover {
  background: var(--white);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 700;
}

/* ---------- 顶部导航 ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  height: 42px;
  width: auto;
}

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

.logo-text strong {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 1px;
}

.logo-text span {
  font-size: 11px;
  color: var(--gray-500);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links > li {
  position: relative;
}

.nav-links > li > a {
  display: block;
  padding: 10px 16px;
  color: var(--gray-700);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
}

.nav-links > li > a:hover,
.nav-links > li > a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.has-dropdown > .dropdown-toggle::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-left: 6px;
  transition: var(--transition);
}

.has-dropdown:hover > .dropdown-toggle::after {
  transform: rotate(225deg) translate(1px, -1px);
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  color: var(--gray-700);
  font-size: 14px;
  border-radius: 8px;
}

.dropdown a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.dropdown a .icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--gray-100);
  color: var(--primary);
}

.nav-cta {
  margin-left: 12px;
}

/* 移动端汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1100;
}

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

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero 区 ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0b1e33 0%, #123a6b 50%, #1668dc 100%);
  color: var(--white);
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(0, 180, 216, 0.18) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 35%);
}

.hero-grid {
  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;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 14px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

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

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 180, 216, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(0, 180, 216, 0); }
}

.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero h1 .gradient-text {
  background: linear-gradient(90deg, #4dc8ff 0%, #00b4d8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  max-width: 540px;
}

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

.hero-metrics {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-metrics .metric .num {
  font-size: 36px;
  font-weight: 800;
  color: var(--white);
}

.hero-metrics .metric .num .unit {
  font-size: 20px;
  color: var(--accent);
}

.hero-metrics .metric .label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 4px;
}

/* Hero 可视化面板 */
.hero-visual {
  position: relative;
}

.hero-panel {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(12px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  animation: float 6s ease-in-out infinite;
}

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

.hero-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  margin-bottom: 20px;
}

.hero-panel-head .dots {
  display: flex;
  gap: 6px;
}

.hero-panel-head .dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
}

.hero-panel-head .dots span:nth-child(1) { background: #ff5f57; }
.hero-panel-head .dots span:nth-child(2) { background: #febc2e; }
.hero-panel-head .dots span:nth-child(3) { background: #28c840; }

.hero-panel-title {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin-left: 8px;
}

.panel-chart {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  height: 140px;
  margin-bottom: 24px;
}

.panel-chart .bar {
  flex: 1;
  border-radius: 6px 6px 0 0;
  background: linear-gradient(180deg, var(--accent) 0%, rgba(0, 180, 216, 0.3) 100%);
  position: relative;
  transition: height 1s ease;
  animation: growBar 1.2s ease forwards;
  transform-origin: bottom;
}

@keyframes growBar {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.panel-chart .bar:nth-child(1) { height: 45%; animation-delay: 0.1s; }
.panel-chart .bar:nth-child(2) { height: 65%; animation-delay: 0.2s; }
.panel-chart .bar:nth-child(3) { height: 50%; animation-delay: 0.3s; }
.panel-chart .bar:nth-child(4) { height: 80%; animation-delay: 0.4s; }
.panel-chart .bar:nth-child(5) { height: 70%; animation-delay: 0.5s; }
.panel-chart .bar:nth-child(6) { height: 95%; animation-delay: 0.6s; }
.panel-chart .bar:nth-child(7) { height: 85%; animation-delay: 0.7s; }
.panel-chart .bar:nth-child(8) { height: 100%; animation-delay: 0.8s; }

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

.panel-stat {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 14px 12px;
  text-align: center;
}

.panel-stat .value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.panel-stat .label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}

/* 浮动小卡片 */
.float-card {
  position: absolute;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: float 5s ease-in-out infinite;
  z-index: 3;
}

.float-card .fc-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: var(--primary-light);
  color: var(--primary);
}

.float-card .fc-text strong {
  display: block;
  font-size: 15px;
  color: var(--dark);
}

.float-card .fc-text span {
  font-size: 12px;
  color: var(--gray-500);
}

.float-card.fc-1 { top: -20px; right: -10px; animation-delay: 0.5s; }
.float-card.fc-2 { bottom: 40px; left: -30px; animation-delay: 1.5s; }
.float-card.fc-3 { bottom: -20px; right: 20px; animation-delay: 2.5s; }

/* ---------- 统计条 ---------- */
.stats-bar {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin-top: -60px;
  position: relative;
  z-index: 5;
  padding: 40px 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item .num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item .num .unit {
  font-size: 22px;
  color: var(--accent);
}

.stat-item .label {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 6px;
}

.stat-item + .stat-item {
  border-left: 1px solid var(--gray-200);
}

/* ---------- 优势卡片 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}

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

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  transform: scale(1.05);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ---------- 产品卡片 ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

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

.product-card-top {
  padding: 32px 28px 24px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #f5f9ff 100%);
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}

.product-card-top .product-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  background: var(--white);
  box-shadow: var(--shadow-md);
  margin-bottom: 16px;
}

.product-card-top .tag {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(22, 104, 220, 0.1);
  padding: 4px 12px;
  border-radius: 100px;
}

.product-card-top h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
}

.product-card-top .en-name {
  font-size: 13px;
  color: var(--gray-500);
  letter-spacing: 1px;
  margin-top: 2px;
}

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

.product-card-body p {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 18px;
  line-height: 1.7;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.product-features span {
  font-size: 12px;
  color: var(--gray-600);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: 4px 12px;
  border-radius: 100px;
}

.product-card-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.product-card-links a {
  font-size: 14px;
  font-weight: 600;
}

/* ---------- 解决方案 ---------- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.solution-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: var(--transition);
  cursor: pointer;
}

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

.solution-card .sol-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
}

.solution-card:hover .sol-icon {
  transform: scale(1.1);
}

.solution-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.solution-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 12px;
}

.solution-card .sol-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.solution-card .sol-more::after {
  content: "→";
  transition: var(--transition);
}

.solution-card:hover .sol-more::after {
  transform: translateX(4px);
}

/* 不同行业的图标背景色 */
.sol-icon.bg-blue { background: #e8f1fd; color: #1668dc; }
.sol-icon.bg-cyan { background: #e0f7fb; color: #00b4d8; }
.sol-icon.bg-green { background: #e6f9ef; color: #10b981; }
.sol-icon.bg-orange { background: #fff3e8; color: #ff7a1a; }
.sol-icon.bg-purple { background: #f3ecff; color: #8b5cf6; }
.sol-icon.bg-red { background: #ffecec; color: #ef4444; }
.sol-icon.bg-teal { background: #e0f5f0; color: #14b8a6; }
.sol-icon.bg-indigo { background: #eceaff; color: #6366f1; }

/* ---------- 案例 ---------- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-cover {
  height: 160px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  color: rgba(255, 255, 255, 0.9);
  overflow: hidden;
}

.case-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.35) 100%);
}

.case-cover .industry-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  padding: 4px 12px;
  border-radius: 100px;
}

.case-cover .case-emoji {
  position: relative;
  z-index: 1;
}

.case-cover .region {
  position: absolute;
  bottom: 14px;
  right: 16px;
  z-index: 2;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
}

.case-body {
  padding: 22px 24px 26px;
}

.case-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.case-body .case-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 14px;
}

.case-body .case-company {
  font-size: 13px;
  color: var(--gray-600);
  display: flex;
  align-items: center;
  gap: 6px;
}

.case-body .case-company::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- 荣誉资质 ---------- */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.honor-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  transition: var(--transition);
}

.honor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.honor-card .honor-icon {
  font-size: 40px;
  margin-bottom: 14px;
}

.honor-card .year {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 10px;
}

.honor-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.5;
}

/* ---------- 新闻列表 ---------- */
.news-list {
  max-width: 900px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.news-item:hover {
  padding-left: 12px;
}

.news-date {
  flex-shrink: 0;
  width: 68px;
  text-align: center;
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 12px 8px;
}

.news-date .day {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.news-date .month {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 4px;
}

.news-info {
  flex: 1;
}

.news-info .news-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 4px;
}

.news-info h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  transition: var(--transition);
}

.news-item:hover .news-info h3 {
  color: var(--primary);
}

.news-arrow {
  color: var(--gray-400);
  font-size: 20px;
  transition: var(--transition);
}

.news-item:hover .news-arrow {
  color: var(--primary);
  transform: translateX(4px);
}

/* ---------- 服务流程 ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
  z-index: 0;
}

.step-card {
  position: relative;
  z-index: 1;
  text-align: center;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-num {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 8px 20px rgba(22, 104, 220, 0.3);
  margin: 0 auto 16px;
}

.step-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  background: var(--primary);
  color: var(--white);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
}

/* ---------- CTA 区 ---------- */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 48px 0;
  overflow: hidden;
  color: var(--white);
}

.cta-section::before {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: -150px;
  right: -100px;
}

.cta-section::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  bottom: -120px;
  left: -80px;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 20px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 40px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 24px;
}

.footer h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.footer-about .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.footer-about .footer-logo img {
  height: 34px;
}

.footer-about .footer-logo strong {
  font-size: 17px;
  color: var(--white);
}

.footer-about p {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.55);
  max-width: 300px;
}

.footer-links li {
  margin-bottom: 5px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-links-2col {
  columns: 2;
  column-gap: 16px;
}

.footer-contact li {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

.footer-contact li a {
  color: inherit;
}

.footer-contact li .fc-label {
  flex-shrink: 0;
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 10px;
}

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

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

/* ---------- 页面横幅（子页面） ---------- */
.page-banner {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
  color: var(--white);
  overflow: hidden;
}

.page-banner::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: 60px 60px;
}

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

.page-banner .breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
}

.page-banner .breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
}

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

.page-banner .breadcrumb .sep {
  margin: 0 8px;
}

.page-banner h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- 关于我们 ---------- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-text .highlight {
  color: var(--primary);
  font-weight: 600;
}

.about-visual {
  position: relative;
}

.about-visual img,
.about-visual .about-placeholder {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
}

.about-visual .about-badge {
  position: absolute;
  bottom: -20px;
  left: 30px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.about-badge .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
}

.about-badge .text {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.4;
}

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-list li {
  display: flex;
  gap: 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
}

.contact-info-list li:last-child {
  border-bottom: none;
}

.contact-info-list .ci-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--primary-light);
  color: var(--primary);
}

.contact-info-list .ci-text strong {
  display: block;
  font-size: 15px;
  color: var(--dark);
  margin-bottom: 4px;
}

.contact-info-list .ci-text span {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-group label .required {
  color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  background: var(--gray-100);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(22, 104, 220, 0.12);
}

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

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

.form-submit {
  width: 100%;
}

/* 表单成功提示 */
.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success .success-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #e6f9ef;
  color: #10b981;
  font-size: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success h3 {
  font-size: 20px;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-success p {
  color: var(--gray-500);
  font-size: 14px;
}

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.pagination a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  font-size: 14px;
  color: var(--gray-600);
  transition: var(--transition);
}

.pagination a:hover,
.pagination a.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* ---------- 产品详情页 ---------- */
.product-hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #f0f6ff 0%, var(--white) 100%);
}

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

.product-hero-alt {
  background: var(--gray-100);
}

.product-hero-alt .product-hero-visual {
  order: 2;
}

.product-hero .ph-icon {
  width: 110px;
  height: 110px;
  border-radius: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 52px;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  margin-bottom: 24px;
}

.product-hero h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.product-hero .en-name {
  font-size: 15px;
  color: var(--gray-500);
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.product-hero .ph-desc {
  font-size: 16px;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 32px;
}

.product-hero-visual {
  background: var(--white);
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 24px 60px rgba(22, 104, 220, 0.12);
  overflow: hidden;
}

.product-hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  display: block;
}

/* 功能特性列表 */
.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-item {
  display: flex;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-item .fi-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--primary-light);
  color: var(--primary);
}

.feature-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.feature-item p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ---------- 解决方案页 ---------- */
.solution-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 60px 0;
  border-bottom: 1px solid var(--gray-200);
}

.solution-detail:last-child {
  border-bottom: none;
}

.solution-detail:nth-child(even) .sd-visual {
  order: 2;
}

.sd-visual {
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  overflow: hidden;
}

.sd-visual img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  display: block;
}

.solution-detail:hover .sd-visual {
  transform: scale(1.02);
}

.sd-content .sd-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.sd-content h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}

.sd-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.8;
}

.sd-content ul {
  margin-bottom: 20px;
}

.sd-content ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 8px;
}

.sd-content ul li::before {
  content: "✓";
  flex-shrink: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

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

.back-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 38px; }
  .hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero-panel { max-width: 560px; margin: 0 auto; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(3, 1fr); }
  .honors-grid { grid-template-columns: repeat(3, 1fr); }
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .steps-grid::before { display: none; }
  .footer-main { grid-template-columns: 1.2fr 1fr; gap: 32px; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .product-hero .container { grid-template-columns: 1fr; gap: 40px; }
  .product-hero-alt .product-hero-visual { order: 0; }
  .feature-list { grid-template-columns: repeat(2, 1fr); }
  .solution-detail { grid-template-columns: 1fr; }
  .solution-detail:nth-child(even) .sd-visual { order: 0; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 24px 40px;
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.1);
    transition: right 0.4s ease;
    overflow-y: auto;
  }
  .nav-links.open { right: 0; }
  .nav-links > li { width: 100%; }
  .nav-links > li > a { padding: 12px 8px; }
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0 0 0 16px;
    display: none;
  }
  .has-dropdown.open .dropdown { display: block; }
  .nav-cta { margin-left: 0; margin-top: 12px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero h1 { font-size: 32px; }
  .hero-metrics { gap: 24px; }
  .hero-metrics .metric .num { font-size: 28px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .stat-item:nth-child(3) { border-left: none; }
  .stats-bar { margin-top: -40px; }
  .features-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr; }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .page-banner { padding: 130px 0 60px; }
  .page-banner h1 { font-size: 30px; }
  .footer-main { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-links-2col { column-gap: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .float-card { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .solutions-grid { grid-template-columns: 1fr; }
  .honors-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .btn { padding: 12px 24px; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-left: none !important; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}