/* ========================================
   上海点开网络科技有限公司 - 官网
   浅色主题 + 卡片布局 + Bento网格
   配色贴近jdy.com官网风格
   ======================================== */

/* CSS变量 - 颜色系统 */
:root {
  /* 背景色 - 浅色系 */
  --bg-darkest: #ffffff;
  --bg-dark: #f3f8ff;
  --bg-card: #ffffff;
  --bg-section: #f3f8ff;

  /* 渐变色 - jdy.com蓝青渐变 */
  --grad-primary: linear-gradient(135deg, #1881f0, #04aeee);
  --grad-primary-hover: linear-gradient(135deg, #2a91f5, #1abdfa);
  --grad-purple: linear-gradient(135deg, #1881f0, #04aeee);
  --grad-text: linear-gradient(135deg, #1881f0, #04aeee);
  --grad-text-purple: linear-gradient(135deg, #1881f0, #04aeee);

  /* 文字色 - 深色 */
  --text-primary: #212121;
  --text-secondary: #333333;
  --text-tertiary: #666666;
  --text-muted: #999999;

  /* 边框 - 浅灰 */
  --border-glass: #cccccc;
  --border-glass-hover: #1881f0;
  --glass-bg: #ffffff;

  /* 功能色 */
  --color-teal: #1881f0;
  --color-blue: #04aeee;
  --color-purple: #3399ff;

  /* 尺寸 */
  --header-height: 70px;
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 阴影 - 浅色系 */
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 30px rgba(4, 174, 238, 0.1);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1), 0 0 20px rgba(4, 174, 238, 0.15);
}

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg-darkest);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* 粒子背景canvas - 确保内容在粒子之上 */
#bg-particles {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  pointer-events: none;
}

body > header,
body > section,
body > footer,
body > div {
  position: relative;
  z-index: 1;
}
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

/* ========================================
   Header - 固定顶部导航
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid #cccccc;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img {
  height: 40px;
  width: auto;
}

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

.header-nav a {
  font-size: 15px;
  color: #333333;
  transition: color 0.2s;
  position: relative;
}

.header-nav a:hover,
.header-nav a.active {
  color: #1881f0;
}

.header-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-primary);
  border-radius: 2px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: #1881f0;
}

.header-phone svg {
  width: 20px;
  height: 20px;
  fill: #1881f0;
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: #212121;
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   通用Section
   ======================================== */
.section {
  padding: 80px 0;
  position: relative;
}

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

.section-title {
  font-size: 36px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  color: #666666;
  font-size: 16px;
  margin-bottom: 48px;
}

/* 装饰光斑 */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

.glow-orb-teal {
  background: #04aeee;
}

.glow-orb-blue {
  background: #04aeee;
}

.glow-orb-purple {
  background: #1881f0;
}

/* ========================================
   玻璃拟态卡片
   ======================================== */
.glass-card {
  background: #ffffff;
  border: 1px solid #cccccc;
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(24,129,240,0.1), transparent);
}

.glass-card:hover {
  border-color: #1881f0;
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* ========================================
   按钮
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(4, 174, 238, 0.3);
}

.btn-primary:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 30px rgba(4, 174, 238, 0.45);
  background: var(--grad-primary-hover);
}

.btn-outline {
  background: transparent;
  color: #1881f0;
  border: 1px solid #1881f0;
}

.btn-outline:hover {
  border-color: #1881f0;
  color: #1881f0;
  background: rgba(24, 129, 240, 0.05);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

/* ========================================
   Hero 区域 (首页)
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at top, #f3f8ff 0%, #ffffff 60%);
}

.hero-bg-orbs {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-orbs .orb1 {
  width: 500px;
  height: 500px;
  top: -100px;
  right: -100px;
}

.hero-bg-orbs .orb2 {
  width: 400px;
  height: 400px;
  bottom: -50px;
  left: -100px;
}

.hero-bg-orbs .orb3 {
  width: 300px;
  height: 300px;
  top: 40%;
  left: 30%;
  background: #1881f0;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(24,129,240,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24,129,240,0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-text h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #212121;
}

.hero-text h1 .grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text .subtitle {
  font-size: 18px;
  color: #333333;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-tag {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  background: rgba(24, 129, 240, 0.08);
  border: 1px solid rgba(24, 129, 240, 0.15);
  color: #1881f0;
}

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

/* Hero留资表单 */
.lead-form {
  background: #ffffff;
  border: 1px solid #cccccc;
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.lead-form h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #212121;
}

.lead-form .form-desc {
  font-size: 14px;
  color: #666666;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: #f3f8ff;
  border: 1px solid #cccccc;
  border-radius: var(--radius-sm);
  color: #212121;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #999999;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1881f0;
  box-shadow: 0 0 0 3px rgba(24, 129, 240, 0.1);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px;
  padding-right: 40px;
}

.form-group select option {
  background: #ffffff;
  color: #212121;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.lead-form .btn {
  width: 100%;
}

.form-note {
  font-size: 12px;
  color: #999999;
  text-align: center;
  margin-top: 12px;
}

/* ========================================
   数据统计条
   ======================================== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 24px;
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: #333333;
  margin-top: 8px;
}

/* ========================================
   Bento Grid 产品展示
   ======================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.bento-item {
  background: #ffffff;
  border: 1px solid #cccccc;
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}

.bento-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(24,129,240,0.1), transparent);
}

.bento-item:hover {
  border-color: #1881f0;
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

/* Bento不等高布局 - 第一个产品占2行 */
.bento-item-large {
  grid-row: span 2;
}

.bento-item-large .bento-features {
  grid-template-columns: 1fr 1fr;
}

.bento-product-img {
  width: 100%;
  height: 140px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  background: #f3f8ff;
}

.bento-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  background: rgba(24, 129, 240, 0.08);
  color: #1881f0;
  border: 1px solid rgba(24, 129, 240, 0.15);
  margin-bottom: 12px;
  align-self: flex-start;
}

.bento-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #212121;
}

.bento-price {
  font-size: 15px;
  color: #1881f0;
  font-weight: 600;
  margin-bottom: 16px;
}

.bento-price .price-num {
  font-size: 24px;
}

.bento-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: auto;
}

.bento-features li {
  font-size: 14px;
  color: #333333;
  padding-left: 20px;
  position: relative;
}

.bento-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--grad-primary);
}

.bento-btn {
  margin-top: 20px;
  text-align: center;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid #cccccc;
  color: #212121;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s;
}

.bento-btn:hover {
  background: var(--grad-primary);
  color: #ffffff;
  border-color: transparent;
}

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

.advantage-item {
  text-align: center;
  padding: 36px 24px;
}

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(24, 129, 240, 0.08);
  border: 1px solid rgba(24, 129, 240, 0.15);
}

.advantage-icon svg {
  width: 32px;
  height: 32px;
  fill: #1881f0;
}

.advantage-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #212121;
}

.advantage-desc {
  font-size: 14px;
  color: #333333;
  line-height: 1.6;
}

/* ========================================
   行业方案
   ======================================== */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.industry-item-large {
  grid-column: span 2;
}

.industry-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
}

.industry-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
  color: #212121;
}

.industry-desc {
  font-size: 14px;
  color: #333333;
  line-height: 1.6;
}

.industry-arrow {
  margin-top: auto;
  color: #1881f0;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.industry-card:hover .industry-arrow {
  gap: 12px;
}

/* ========================================
   客户案例卡片
   ======================================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.case-img-wrap {
  width: 100%;
  height: 160px;
  overflow: hidden;
  position: relative;
  background: #f3f8ff;
}

.case-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: transform 0.4s;
}

.case-card:hover .case-img-wrap img {
  transform: scale(1.05);
}

.case-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #212121;
}

.case-meta {
  font-size: 13px;
  color: #1881f0;
  margin-bottom: 12px;
}

.case-quote {
  font-size: 14px;
  color: #333333;
  line-height: 1.6;
  flex: 1;
  font-style: italic;
}

.case-author {
  font-size: 13px;
  color: #666666;
  margin-top: 12px;
  text-align: right;
}

/* ========================================
   ISO认证条
   ======================================== */
.iso-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 40px 48px;
  background: linear-gradient(135deg, rgba(4,174,238,0.05), rgba(24,129,240,0.05));
  border: 1px solid rgba(24,129,240,0.1);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
  gap: 24px;
}

.iso-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.iso-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  text-align: center;
  line-height: 1.2;
}

.iso-text h4 {
  font-size: 18px;
  font-weight: 700;
  color: #212121;
}

.iso-text p {
  font-size: 14px;
  color: #333333;
}

/* ========================================
   底部CTA
   ======================================== */
.cta-section {
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-section p {
  font-size: 16px;
  color: #333333;
  margin-bottom: 32px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: #191919;
  border-top: 1px solid #333;
  padding: 60px 0 24px;
}

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

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

.footer-col p,
.footer-col li {
  font-size: 14px;
  color: #999;
  line-height: 1.8;
}

.footer-col a:hover {
  color: #04aeee;
}

.footer-logo img {
  height: 36px;
  width: auto;
  margin-bottom: 16px;
  filter: brightness(0) invert(1);
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #666;
}

.footer-bottom a {
  color: #999;
}

.footer-bottom a:hover {
  color: #04aeee;
}

/* ========================================
   浮动咨询按钮
   ======================================== */
.float-bar {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid #cccccc;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s;
  position: relative;
}

.float-btn:hover {
  transform: translateY(-3px);
  border-color: #1881f0;
  box-shadow: 0 4px 20px rgba(24,129,240,0.2);
}

.float-btn svg {
  width: 24px;
  height: 24px;
  fill: #1881f0;
}

.float-btn .float-tip {
  position: absolute;
  right: 64px;
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #cccccc;
  font-size: 13px;
  color: #212121;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.float-btn:hover .float-tip {
  opacity: 1;
}

.float-btn-top {
  opacity: 0;
  visibility: hidden;
}

.float-btn-top.show {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   产品详情页
   ======================================== */
.product-detail {
  margin-bottom: 60px;
}

.product-header {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.product-header img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: #f3f8ff;
}

.product-header-info h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #212121;
}

.product-header-info .tagline {
  font-size: 15px;
  color: #333333;
  margin-bottom: 12px;
}

.product-header-info .price {
  font-size: 14px;
  color: #1881f0;
}

.product-header-info .price strong {
  font-size: 28px;
}

.product-modules {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.product-module {
  padding: 24px;
}

.product-module h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #212121;
}

.product-module h4::before {
  content: '';
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--grad-primary);
}

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

.product-module ul li {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 16px;
  background: #f3f8ff;
  border: 1px solid #cccccc;
  color: #333333;
}

/* 产品FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  border: 1px solid #cccccc;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s;
  color: #212121;
}

.faq-question:hover {
  background: #f3f8ff;
}

.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: #333333;
  line-height: 1.7;
}

/* ========================================
   行业方案详情
   ======================================== */
.solution-item {
  margin-bottom: 32px;
  padding: 36px;
}

.solution-item h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #212121;
}

.solution-item h3 .num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
}

.solution-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-feature {
  padding: 20px;
  background: #f3f8ff;
  border: 1px solid #cccccc;
  border-radius: var(--radius-md);
}

.solution-feature h5 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1881f0;
}

.solution-feature p {
  font-size: 13px;
  color: #333333;
  line-height: 1.6;
}

/* ========================================
   关于我们
   ======================================== */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-text p {
  font-size: 15px;
  color: #333333;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* 关于我们右侧视觉面板 */
.about-visual {
  background: linear-gradient(135deg, rgba(4,174,238,0.05), rgba(24,129,240,0.05));
  border: 1px solid #cccccc;
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

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

.about-stat .num {
  font-size: 36px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-stat .label {
  font-size: 13px;
  color: #333333;
  margin-top: 4px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.about-tag {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  background: rgba(24, 129, 240, 0.08);
  border: 1px solid rgba(24, 129, 240, 0.15);
  color: #1881f0;
}

/* 服务流程 */
.service-flow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 28px 16px;
  position: relative;
}

.flow-step .step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
}

.flow-step .step-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #212121;
}

.flow-step .step-desc {
  font-size: 13px;
  color: #666666;
}

.flow-arrow {
  color: #1881f0;
  font-size: 24px;
}

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

.contact-info-card {
  padding: 36px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(24, 129, 240, 0.08);
  border: 1px solid rgba(24, 129, 240, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item .icon svg {
  width: 22px;
  height: 22px;
  fill: #1881f0;
}

.contact-info-item .label {
  font-size: 13px;
  color: #666666;
  margin-bottom: 4px;
}

.contact-info-item .value {
  font-size: 16px;
  font-weight: 600;
  color: #212121;
}

.contact-info-item .value.large {
  font-size: 22px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-form-card {
  padding: 36px;
}

.contact-form-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #212121;
}

/* ========================================
   页面通用Hero(非首页)
   ======================================== */
.page-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at top, #f3f8ff 0%, #ffffff 70%);
}

.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 12px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p {
  font-size: 16px;
  color: #333333;
}

/* 案例页顶部说明 */
.case-notice {
  text-align: center;
  padding: 20px 32px;
  margin-bottom: 48px;
  border-radius: var(--radius-md);
  background: rgba(24, 129, 240, 0.05);
  border: 1px solid rgba(24, 129, 240, 0.1);
  font-size: 15px;
  color: #333333;
}

.case-notice strong {
  color: #1881f0;
}

/* ========================================
   响应式适配
   ======================================== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .lead-form {
    max-width: 480px;
    margin: 0 auto;
  }

  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bento-item-large {
    grid-row: span 1;
  }

  .bento-item-large .bento-features {
    grid-template-columns: 1fr;
  }

  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-modules {
    grid-template-columns: 1fr;
  }

  .solution-features {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-hero {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid #cccccc;
  }

  .header-nav.open {
    display: flex;
  }

  .header-phone {
    font-size: 15px;
  }

  .hamburger {
    display: flex;
  }

  .hero-text h1 {
    font-size: 32px;
  }

  .hero-text .subtitle {
    font-size: 15px;
  }

  .section-title {
    font-size: 28px;
  }

  .section {
    padding: 60px 0;
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }

  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .industry-grid {
    grid-template-columns: 1fr;
  }

  .industry-item-large {
    grid-column: span 1;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-num {
    font-size: 32px;
  }

  .iso-bar {
    flex-direction: column;
    text-align: center;
  }

  .solution-features {
    grid-template-columns: 1fr;
  }

  .service-flow {
    flex-direction: column;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .float-bar {
    right: 16px;
    bottom: 16px;
  }

  .float-btn .float-tip {
    display: none;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .product-header {
    flex-direction: column;
    text-align: center;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }
}