/* ============================================ KISSABC 官网 - 全局样式 ============================================ */

:root {
  --color-primary: #D9484E;
  --color-primary-dark: #B5383E;
  --color-primary-light: #FFEBEC;
  --color-accent: #FF6B35;
  --color-accent-light: #FFF0EA;
  --color-bg: #FFFFFF;
  --color-bg-gray: #F8F9FA;
  --color-bg-section: #FCFCFD;
  --color-text: #1A1A2E;
  --color-text-secondary: #555770;
  --color-text-muted: #8E90A6;
  --color-border: #E4E6EB;
  --color-border-light: #F0F1F3;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --max-width: 1200px;
  --header-height: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

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

/* ============================================ 按钮 ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary-light); }

.btn-white {
  background: #fff;
  color: var(--color-primary);
}
.btn-white:hover { background: #f5f5f5; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-lg { padding: 14px 40px; font-size: 16px; border-radius: var(--radius-md); }

/* ============================================ 导航栏 ============================================ */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}
.header.scrolled { box-shadow: var(--shadow-sm); }

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

.logo { display: flex; align-items: center; }
.logo img { height: 36px; }

.nav-links { display: flex; align-items: center; gap: 36px; }

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-primary); }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: width 0.25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================ Footer ============================================ */

.footer {
  background: #1A1A2E;
  color: #B0B3C5;
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand img { height: 32px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 280px; }

.footer h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  color: #B0B3C5;
  transition: color 0.25s ease;
}
.footer-links a:hover { color: #fff; }

.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 1.8;
}

.footer-qrcode {
  display: flex;
  gap: 24px;
  margin-top: 12px;
}
.footer-qrcode-item {
  text-align: center;
}
.footer-qrcode-item .qr-placeholder {
  width: 100px; height: 100px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #B0B3C5;
  margin-bottom: 8px;
}
.footer-qrcode-item span { font-size: 12px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
}

/* ============================================ 页面标题区 ============================================ */

.page-hero {
  padding: 120px 0 72px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  text-align: center;
  color: #fff;
}
.page-hero h1 { font-size: 40px; font-weight: 700; margin-bottom: 16px; }
.page-hero p { font-size: 18px; opacity: 0.9; max-width: 600px; margin: 0 auto; }

/* ============================================ 区块通用 ============================================ */

.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

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

/* ============================================ 卡片 ============================================ */

.card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }

/* ============================================ 动画 ============================================ */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================ 首页 - Hero ============================================ */

.hero {
  padding: calc(var(--header-height) + 60px) 0 0;
  background: linear-gradient(135deg, #D9484E 0%, #C0353F 40%, #7A282E 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 300px; height: 300px;
  background: rgba(255,255,255,0.03);
  border-radius: 50%;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
  padding-bottom: 60px;
}

.hero-content { color: #fff; }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}
.text-primary { color: #FFD700; }
.hero-content p {
  font-size: 17px;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 32px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-hero-outline { background: transparent; border-color: rgba(255,255,255,0.4); color: #fff; }
.btn-hero-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

.hero-image { display: flex; justify-content: center; }
.hero-device {
  width: 280px;
  height: 420px;
  background: linear-gradient(135deg, #2D2D3F, #1A1A2E);
  border-radius: 28px;
  border: 4px solid #3D3D52;
  padding: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  position: relative;
}
.hero-device::before {
  content: '';
  position: absolute;
  top: 20px; left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 8px;
  background: #555;
  border-radius: 50%;
}
.hero-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #E88383, #D9484E);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-screen-content {
  text-align: center;
  color: #fff;
}
.hero-screen-label {
  display: block;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.hero-screen-text {
  display: block;
  font-size: 14px;
  opacity: 0.9;
}

.hero-wave { margin-top: -1px; }
.hero-wave svg { display: block; width: 100%; height: 80px; }

/* ============================================ 首页 - 数据统计 ============================================ */

.stats-section { padding-top: 40px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.stat-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-unit { font-size: 20px; font-weight: 600; }
.stat-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.stat-desc {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ============================================ 首页 - 产品亮点 ============================================ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.feature-card {
  text-align: center;
  padding: 40px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.feature-icon { font-size: 40px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================ 首页 - 九大版块图标视图 ============================================ */

.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 28px;
  max-width: 1140px;
  margin: 0 auto;
  align-items: start;
}
.module-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0;
  background: transparent;
  border: none;
  transition: transform 0.3s ease;
}
.module-card:hover {
  transform: translateY(-4px);
}
.module-image-wrap {
  width: 340px;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: #fff;
  border-radius: 24px;
  padding: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid var(--color-border-light);
  transition: box-shadow 0.3s ease;
}
.module-card:hover .module-image-wrap {
  box-shadow: 0 6px 20px rgba(217,72,78,0.12);
}
.module-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
}
.module-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.module-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  max-width: 200px;
  margin: 0 auto;
}

/* 无产品图的模块 8-9 使用图标容器 */
.module-icon-wrap {
  width: 340px;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 24px;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s ease;
}
.module-card:hover .module-icon-wrap {
  box-shadow: 0 6px 20px rgba(0,0,0,0.10);
}
.module-icon-text {
  font-size: 64px;
  line-height: 1;
}

/* ============================================ 首页 - 年龄段 ============================================ */

.age-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.age-card {
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.age-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.age-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.age-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.age-card p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }

/* ============================================ 首页 - 荣誉 ============================================ */

.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.honor-item {
  text-align: center;
  padding: 32px 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}
.honor-badge { font-size: 36px; margin-bottom: 12px; }
.honor-item span {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================ CTA 区块 ============================================ */

.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  text-align: center;
  color: #fff;
}
.cta-content h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.cta-content p { font-size: 16px; opacity: 0.9; margin-bottom: 32px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ============================================ 产品中心页 ============================================ */

.hardware-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hardware-visual { display: flex; justify-content: center; }
.tablet-mockup {
  width: 260px; height: 380px;
  background: linear-gradient(135deg, #2D2D3F, #1A1A2E);
  border-radius: 24px;
  border: 4px solid #3D3D52;
  padding: 14px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}
.tablet-screen {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, #D9484E, #B5383E);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tablet-content { text-align: center; color: #fff; }
.tablet-logo {
  display: block;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.tablet-content p { font-size: 13px; opacity: 0.9; }

.hardware-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.spec-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  background: var(--color-bg-gray);
  border-radius: var(--radius-sm);
}
.spec-icon { font-size: 24px; flex-shrink: 0; }
.spec-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.spec-item p { font-size: 13px; color: var(--color-text-secondary); }

.content-system {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.content-card {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  position: relative;
  transition: all 0.3s ease;
}
.content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.content-card-icon { font-size: 36px; margin-bottom: 12px; }
.content-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.content-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }
.content-tag {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 10px;
  margin-top: 12px;
}

/* ============================================ 产品页 - 九大版块图标视图 ============================================ */

.products-modules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.product-module-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0;
  background: transparent;
  border: none;
  transition: transform 0.3s ease;
}
.product-module-card:hover {
  transform: translateY(-4px);
}
.product-module-image-wrap {
  width: 360px;
  height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: #fff;
  border-radius: 24px;
  padding: 20px;
  position: relative;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid var(--color-border-light);
  transition: box-shadow 0.3s ease;
}
.product-module-card:hover .product-module-image-wrap {
  box-shadow: 0 6px 20px rgba(217,72,78,0.12);
}
.product-module-number {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  background: var(--color-primary);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-module-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
}
.product-module-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.product-module-card .module-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
  max-width: 200px;
}
.product-module-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.product-module-tags span {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 10px;
}

/* 产品页无图模块使用图标容器（与首页一致） */
.product-module-icon-wrap {
  width: 180px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 24px;
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s ease;
}
.product-module-card:hover .product-module-icon-wrap {
  box-shadow: 0 6px 20px rgba(0,0,0,0.10);
}
.product-module-icon-wrap .product-module-number {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  background: var(--color-primary);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-module-icon-text {
  font-size: 64px;
  line-height: 1;
}

/* ============================================ 经销商加盟页 ============================================ */

.dealer-advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advantage-card {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.advantage-icon { font-size: 44px; margin-bottom: 16px; }
.advantage-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.advantage-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.support-item {
  padding: 28px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}
.support-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.3;
  margin-bottom: 12px;
}
.support-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.support-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

.flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.flow-step {
  text-align: center;
  padding: 24px;
}
.flow-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}
.flow-step h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.flow-step p { font-size: 13px; color: var(--color-text-secondary); }
.flow-arrow { font-size: 28px; color: var(--color-text-muted); }

.apply-form-wrapper { max-width: 640px; margin: 0 auto; }
.apply-form {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-size: 14px; font-weight: 600; color: var(--color-text); }
.required { color: var(--color-primary); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font-sans);
  transition: border-color 0.2s ease;
  background: var(--color-bg-gray);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}
.apply-form .btn { width: 100%; margin-top: 8px; }

/* ============================================ 客户服务页 ============================================ */

.service-policy {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.policy-card {
  text-align: center;
  padding: 36px 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.policy-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.policy-icon { font-size: 40px; margin-bottom: 14px; }
.policy-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.policy-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item.active { border-color: var(--color-primary-light); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  user-select: none;
}
.faq-question:hover { color: var(--color-primary); }
.faq-arrow { transition: transform 0.3s ease; color: var(--color-text-muted); }
.faq-item.active .faq-arrow { transform: rotate(180deg); color: var(--color-primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}
.faq-answer p:last-child { margin-bottom: 0; }

/* ============================================ 关于我们页 ============================================ */

.about-brand {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-brand-text h2 { font-size: 28px; font-weight: 700; margin-bottom: 24px; }
.about-brand-text p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 16px;
}

.about-vision-card {
  padding: 28px;
  background: var(--color-bg-gray);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  margin-bottom: 16px;
}
.about-vision-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }
.about-vision-card p { font-size: 14px; color: var(--color-text-secondary); }

.timeline { max-width: 700px; margin: 0 auto; padding-left: 40px; position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 14px; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  margin-bottom: 36px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -34px; top: 4px;
  width: 12px; height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 3px solid var(--color-primary-light);
}
.timeline-year {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.timeline-content h4 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* 品牌发展史图片 */
.history-image-wrap {
  max-width: 100%;
  margin: 0 auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
}
.history-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

/* ==================== 荣誉证书墙 ==================== */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 24px;
  max-width: 1040px;
  margin: 0 auto;
  align-items: end;
}
.certificate-item {
  text-align: center;
  background: transparent;
  border-radius: 0;
  padding: 0;
  border: none;
  box-shadow: none;
  transition: transform 0.35s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.certificate-item:hover {
  transform: translateY(-4px);
  box-shadow: none;
}
.certificate-item img {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  border-radius: 0;
  background: transparent;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,0.10));
  transition: filter 0.35s ease;
}
.certificate-item:hover img {
  filter: drop-shadow(0 8px 24px rgba(217,72,78,0.18));
}
.certificate-item span {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.charity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.charity-card {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}
.charity-image {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.charity-icon { font-size: 32px; }
.charity-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.charity-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================ 联系方式公共栏 ============================================ */

.contact-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.contact-bar-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 28px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}
.contact-bar-icon { font-size: 28px; }
.contact-bar-label { font-size: 13px; color: var(--color-text-muted); margin-bottom: 2px; }
.contact-bar-value { font-size: 16px; font-weight: 600; }

/* ============================================ 浮动联系方式 ============================================ */

.floating-contact {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  padding: 10px;
  text-align: center;
}
.floating-contact img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  display: block;
}
.floating-contact-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 6px;
  line-height: 1.3;
}

/* ============================================ Hero 卖点标签 ============================================ */

.hero-sellpoints {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 28px;
}
.hero-sellpoints span {
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.2);
}

/* ============================================ Hero 产品主图 ============================================ */

.hero-product-img {
  max-width: 100%;
  max-height: 420px;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.2));
}

/* ============================================ 品牌简介 ============================================ */

.brand-intro {
  max-width: 900px;
  margin: 0 auto;
}
.brand-intro p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* ============================================ 五大学习理念 ============================================ */

.theory-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.theory-grid .theory-card:nth-child(5) {
  grid-column: 1 / -1;
  max-width: 60%;
  margin: 0 auto;
}
.theory-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: 28px;
  transition: all 0.3s ease;
}
.theory-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.theory-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.2;
  line-height: 1;
  flex-shrink: 0;
}
.theory-content h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.theory-content p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================ 硬件配置 ============================================ */

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.hardware-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: 28px 20px;
  transition: all 0.3s ease;
}
.hardware-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }
.hardware-img-wrap {
  width: 100%;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: var(--color-bg-gray);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow: hidden;
}
.hardware-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.hardware-img-placeholder {
  font-size: 48px;
  line-height: 1;
}
.hardware-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; text-align: center; }
.hardware-card-upgrade { border-color: var(--color-primary-light); background: linear-gradient(180deg, #FFF5F5 0%, #fff 30%); }
.upgrade-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  vertical-align: middle;
  margin-left: 4px;
}
.hardware-spec-list {
  list-style: none;
  padding: 0;
}
.hardware-spec-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}
.hardware-spec-list li:last-child { border-bottom: none; }
.hardware-spec-list li::before { content: '✓ '; color: var(--color-primary); font-weight: 700; margin-right: 4px; }

/* ============================================ 十大功能标签 ============================================ */

.function-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}
.func-tag {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.func-tag:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(217,72,78,0.3); }

/* ============================================ 学习场景 ============================================ */

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scene-card {
  text-align: center;
  padding: 36px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all 0.3s ease;
}
.scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.scene-icon { font-size: 44px; margin-bottom: 16px; }
.scene-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.scene-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ============================================ 响应式 ============================================ */

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .age-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .hardware-showcase { grid-template-columns: 1fr; gap: 40px; }
  .dealer-advantages { grid-template-columns: repeat(3, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .service-policy { grid-template-columns: repeat(2, 1fr); }
  .certificates-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-brand { grid-template-columns: 1fr; gap: 40px; }
  .hardware-grid { grid-template-columns: repeat(2, 1fr); }
  .theory-grid { grid-template-columns: 1fr; }
  .theory-grid .theory-card:nth-child(5) { max-width: 100%; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-height: 60px; }

  .container { padding: 0 16px; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a {
    padding: 14px 24px;
    width: 100%;
  }
  .nav-links a::after { display: none; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }
  .hero-content h1 { font-size: 30px; }
  .hero-content p { font-size: 15px; }
  .hero-cta { justify-content: center; }
  .hero-image { display: none; }
  .hero-wave svg { height: 40px; }

  .page-hero { padding: 100px 0 48px; }
  .page-hero h1 { font-size: 28px; }
  .page-hero p { font-size: 15px; }

  .section { padding: 56px 0; }
  .section-header h2 { font-size: 24px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item { padding: 20px 12px; }
  .stat-number { font-size: 28px; }

  .features-grid { grid-template-columns: 1fr; }
  .modules-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .module-image-wrap { width: 240px; padding: 14px; }
  .module-icon-wrap { width: 220px; height: 220px; }
  .module-icon-text { font-size: 48px; }
  .products-modules-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .product-module-image-wrap { width: 240px; height: auto; padding: 16px; }
  .product-module-icon-wrap { width: 180px; height: 180px; }
  .product-module-icon-text { font-size: 48px; }
  .age-grid { grid-template-columns: 1fr; }

  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand p { max-width: 100%; }

  .cta-content h2 { font-size: 24px; }

  .hardware-showcase { grid-template-columns: 1fr; }
  .hardware-specs { grid-template-columns: 1fr; }
  .content-system { grid-template-columns: 1fr; }

  .dealer-advantages { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .flow-steps { flex-direction: column; gap: 8px; }
  .flow-arrow { transform: rotate(90deg); }
  .apply-form { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }

  .service-policy { grid-template-columns: 1fr; }
  .policy-card { padding: 24px 16px; }
  .faq-question { padding: 16px 20px; font-size: 14px; }

  .certificates-grid { grid-template-columns: repeat(2, 1fr); }
  .charity-grid { grid-template-columns: 1fr; }
  .contact-bar { flex-direction: column; gap: 12px; align-items: stretch; }
  .contact-bar-item { justify-content: center; }

  .floating-contact { right: 8px; padding: 8px; }
  .floating-contact img { width: 80px; height: 80px; }
  .hero-sellpoints { justify-content: center; }
  .hero-sellpoints span { font-size: 12px; padding: 5px 12px; }
  .hardware-grid { grid-template-columns: 1fr; }
  .theory-grid { grid-template-columns: 1fr; }
  .theory-grid .theory-card:nth-child(5) { max-width: 100%; }
  .theory-card { flex-direction: column; gap: 12px; text-align: center; }
  .scene-grid { grid-template-columns: 1fr; }
  .function-tags { gap: 8px; }
  .func-tag { font-size: 13px; padding: 10px 18px; }
}