/* =========================================================
   Sodick（沙迪克）全站导航
   说明：本文件覆盖旧 TICA 头部样式，并中和原页面固定视差 banner
   ========================================================= */

/* 锚点平滑滚动（参考 TICA 站内交互），并让固定导航不遮挡锚点目标 */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

/* ---------- 顶栏：固定悬浮，滚动时始终可见 ----------
   顶部时覆盖在 banner 上，背景透明；
   滚动后（.nav-scrolled）切换为白色背景 + 阴影 */
.sodick-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 84px;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  transition: background-color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.sodick-nav.nav-scrolled {
  background: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
}

.nav-inner {
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
}

/* ---------- 左侧：品牌 Logo ---------- */
.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  margin-right: 56px;
  text-decoration: none;
}

.nav-brand-img {
  display: block;
  height: 45px;
  margin-left: 65px;
  width: auto;
}

/* ---------- 中间：主导航 ---------- */
.nav-main {
  flex: 1;
  min-width: 0;
}

.nav-list {
  display: flex;
  justify-content: flex-end;
  margin-right: 55px;
  padding: 0;
  list-style: none;
}

.nav-item {
  position: relative;
  margin: 0 6px;
}

.nav-link {
  display: block;
  padding: 30px 14px 28px;
  font-size: 16px;
  color: #222;
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-item > .nav-link::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: 4px;
  background: #2e9c27;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.nav-item:hover > .nav-link,
.nav-item:focus-within > .nav-link {
  color: #2e9c27;
}

.nav-item:hover > .nav-link::after,
.nav-item:focus-within > .nav-link::after {
  transform: scaleX(1);
}

/* ---------- 下拉菜单（hover 展开） ---------- */
.nav-sub {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  margin: 0;
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border: 1px solid #eee;
  border-top: 3px solid #2e9c27;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  z-index: 1001;
}

.nav-item:hover .nav-sub,
.nav-item:focus-within .nav-sub,
.nav-sub:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-sub a {
  display: block;
  padding: 12px 24px;
  font-size: 14px;
  white-space: nowrap;
  color: #444;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, padding-left 0.2s ease;
}

.nav-sub a:hover {
  padding-left: 30px;
  color: #2e9c27;
  background: #cbe5be;
}

/* ---------- 移动端开关（默认隐藏） ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: #222;
  border-radius: 2px;
  transition: all 0.25s ease;
}

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

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

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

/* ---------- 布局中和：原页面固定视差 banner 改为普通文档流 ---------- */
.banner-fix-box {
  position: relative !important;
  top: auto !important;
  left: auto !important;
}

/* ---------- 移动端适配 ---------- */
@media (max-width: 1080px) {
  .sodick-nav {
    height: 64px;
  }

  .nav-brand {
    margin-right: auto;
  }

  .nav-brand-img {
    height: 32px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-main {
    display: none;
  }

  /* 展开的移动端面板：在头部内流式堆叠，避免固定定位互相遮挡 */
  .sodick-nav.nav-open {
    background: #fff;
    height: auto;
    max-height: 100vh;
    overflow-y: auto;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
  }

  .sodick-nav.nav-open .nav-inner {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .sodick-nav.nav-open .nav-main {
    display: block;
    width: 100%;
    flex: 1 0 100%;
    position: static;
    box-shadow: none;
  }

  .sodick-nav.nav-open .nav-main {
    padding: 10px 0;
    border-top: 1px solid #eee;
    margin-top: 8px;
  }

  .nav-open .nav-list {
    flex-direction: column;
    justify-content: flex-start;
  }

  .nav-open .nav-item {
    margin: 0;
  }

  .nav-open .nav-link {
    padding: 14px 20px;
    font-size: 15px;
    border-bottom: 1px solid #f2f2f2;
  }

  .nav-open .nav-item > .nav-link::after {
    display: none;
  }

  /* 移动端子菜单：点击父级展开 */
  .nav-open .nav-sub {
    position: static;
    display: none;
    min-width: 0;
    padding: 0 0 6px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: #fafafa;
  }

  .nav-open .nav-item.open .nav-sub {
    display: block;
  }

  .nav-open .nav-sub a {
    padding: 10px 20px 10px 36px;
  }

  .nav-open .nav-sub a:hover {
    padding-left: 42px;
  }

  /* 移动端三级菜单 */
  .nav-open .nav-sub-item {
    position: static;
  }

  .nav-open .nav-sub-item > a {
    padding: 10px 20px 10px 36px;
  }

  .nav-open .nav-sub-item > a::after {
    content: "+";
    right: 20px;
    font-size: 14px;
  }

  .nav-open .nav-sub-sub {
    position: static;
    display: none;
    min-width: 0;
    padding: 0 0 6px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: #f4f4f4;
  }

  .nav-open .nav-sub-item.open .nav-sub-sub {
    display: block;
  }

  .nav-open .nav-sub-sub a {
    padding: 10px 20px 10px 52px;
  }

  .nav-open .nav-sub-sub a:hover {
    padding-left: 58px;
  }

}