/* 全站公共样式：品牌色、头尾、栅格、按钮，保证多页视觉一致 */
:root {
  --color-primary: #fd561c;
  --color-blue: #0066cc;
  --color-text: #222;
  --color-muted: #666;
  --color-light: #999;
  --color-bg: #f5f7fa;
  --color-footer: #1a1a1a;
  --header-h: 70px;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: #fff;
  padding-top: var(--header-h);
}

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

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

ul,
ol {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 头部导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  /* 不写死 height，避免展开移动菜单时被裁切 */
  min-height: var(--header-h);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.35s ease, background 0.35s ease;
}

/* 滚动后加深阴影，让固定导航更有存在感 */
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  height: 38px;
  width: auto;
}

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

.nav-links a {
  font-size: 18px;
  color: #000;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.header-phone .phone-icon {
  width: 18px;
  height: 18px;
  fill: var(--color-primary);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #333;
}

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid #eee;
  padding: 12px 20px 20px;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  border-bottom: 1px solid #f2f2f2;
  color: #333;
}

.mobile-menu a.active {
  color: var(--color-primary);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-footer);
  color: #fff;
  padding: 50px 0 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-left h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

.footer-phone {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.footer-details p {
  font-size: 14px;
  color: #fff;
  margin-bottom: 6px;
}

.footer-right {
  display: flex;
  gap: 48px;
}

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

.footer-qr img {
  width: 110px;
  height: 110px;
  background: #fff;
  border-radius: 6px;
  padding: 6px;
  object-fit: contain;
  margin: 0 auto 10px;
}

.footer-qr p {
  font-size: 12px;
  color: #fff;
  max-width: 160px;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding: 18px 0;
  text-align: center; 
}

.footer-bottom p {
  font-size: 14px;
  color: #fff;
}

/* ========== 通用区块 ========== */
.section-title {
  text-align: center;
  margin-bottom: 36px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: 900;
  color:#000;
  margin-bottom: 8px;
}

.section-title p {
  font-size: 18px;
  color: #000;
}

.btn-primary {
  display: inline-block;
  padding: 10px 28px;
  background: var(--color-blue);
  color: #fff;
  border-radius: 4px;
  font-size: 14px;
  transition: background 0.25s, transform 0.2s;
}

.btn-primary:hover {
  background: #0052a3;
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-block;
  padding: 10px 28px;
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.25s;
}

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

/* ========== 面包屑条：Banner 下方，关于页与产品详情共用 ========== */
.crumb {
  font-size: 13px;
  color: var(--color-muted);
}

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

.about-crumb-bar {
  background: #f0f2f5;
  border-bottom: 1px solid #e5e8ed;
}

.about-crumb-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  gap: 16px;
}

.about-crumb-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
}

.about-crumb-label img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.btn-orange {
  display: inline-block;
  padding: 10px 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 4px;
  font-size: 14px;
  transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
}

.btn-orange:hover {
  background: #e84a12;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(253, 86, 28, 0.35);
}

/* 占位图：缺图时保持版面 */
.img-placeholder {
  background: linear-gradient(135deg, #e8f1fb 0%, #f0f4f8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-light);
  font-size: 14px;
  min-height: 120px;
}

/* ========== 滚动显现：区块进入视口时淡入上移 ========== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* 数值滚动进行中轻微放大，结束后回落 */
[data-count].counting {
  display: inline-block;
  transition: transform 0.3s ease;
}

[data-count].count-done {
  transform: scale(1.04);
  animation: countPop 0.45s ease forwards;
}

@keyframes countPop {
  0% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

.banner-count {
  color: #ffd28a;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  [data-count].count-done {
    animation: none;
    transform: none;
  }
}

/* ========== H5 适配 ========== */
@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  .nav-links {
    display: none;
  }

  /* H5 效果图：保留电话 + 汉堡菜单 */
  .header-phone {
    font-size: 14px;
    margin-left: auto;
    margin-right: 8px;
  }

  .header-phone .phone-icon {
    width: 14px;
    height: 14px;
  }

  .menu-toggle {
    display: flex;
  }

  .logo img {
    height: 32px;
  }

  /* 窄屏面包屑允许折行 */
  .about-crumb-inner {
    flex-wrap: wrap;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .footer-content {
    flex-direction: column;
  }

  .footer-right {
    gap: 20px;
  }

  /* H5 缩小二维码，避免页尾过重 */
  .footer-qr img {
    width: 88px;
    height: 88px;
    padding: 4px;
    margin-bottom: 8px;
  }

  .footer-qr p {
    font-size: 11px;
    max-width: 120px;
  }

  .footer-phone {
    font-size: 26px;
  }

  .section-title {
    margin-bottom: 24px;
  }

  .section-title h2 {
    font-size: 20px;
  }

  .section-title p {
    font-size: 13px;
  }
}