/*
 * ChaseDream 移动端基础层
 * 仅提供通用断点、页头和菜单。页面级布局放在各自的 *-mobile.css 中。
 */
:root {
  --cd-mobile-breakpoint: 991px;
  --cd-mobile-blue: #168ee6;
  --cd-mobile-text: #161616;
  --cd-mobile-muted: #858585;
  --cd-mobile-surface: #ffffff;
  --cd-mobile-page-gutter: 20px;
  --cd-mobile-header-z: 1200;
}

.mobile-site-header {
  display: none;
}

@media (max-width: 991px) {
  html {
    min-width: 320px;
    background: var(--cd-mobile-surface);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    width: 100%;
    min-width: 320px;
    max-width: none;
    margin: 0;
    padding: 0;
    background: var(--cd-mobile-surface);
    color: var(--cd-mobile-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
      "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  }

  body > .header,
  body > .nav {
    display: none;
  }

  .mobile-site-header {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: var(--cd-mobile-header-z);
    display: block;
    width: 100%;
    background: var(--cd-mobile-surface);
    box-shadow: 0 1px 0 rgba(14, 33, 51, 0.05);
  }

  .mobile-brand-bar {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    min-height: 72px;
    padding: 10px var(--cd-mobile-page-gutter);
    padding: max(10px, env(safe-area-inset-top)) var(--cd-mobile-page-gutter) 10px;
    box-sizing: border-box;
    -webkit-box-align: end;
    -ms-flex-align: end;
    align-items: flex-end;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    background: #fff;
  }

  .mobile-brand {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
  }

  .mobile-brand img {
    display: block;
    width: 120px;
    height: auto;
  }

  .mobile-menu-toggle {
    display: inline-flex;
    min-width: 78px;
    min-height: 40px;
    margin: 0;
    padding: 5px 0 5px 10px;
    align-items: center;
    justify-content: flex-end;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--cd-mobile-blue);
    font: inherit;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-menu-label {
    margin-right: 9px;
  }

  .mobile-menu-icon {
    display: inline-flex;
    width: 23px;
    height: 18px;
    flex-direction: column;
    justify-content: space-between;
  }

  .mobile-menu-icon span {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transform-origin: center;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .mobile-site-header.is-menu-open .mobile-menu-icon span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .mobile-site-header.is-menu-open .mobile-menu-icon span:nth-child(2) {
    opacity: 0;
  }

  .mobile-site-header.is-menu-open .mobile-menu-icon span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .mobile-ad-slot {
    width: 100%;
    min-height: 0;
    overflow: hidden;
    background: #f5f7f9;
  }

  .mobile-ad-slot:empty {
    display: none;
  }

  .mobile-ad-slot a,
  .mobile-ad-slot picture,
  .mobile-ad-slot img {
    display: block;
    width: 100% !important;
    max-width: none !important;
  }

  .mobile-ad-slot img {
    height: auto !important;
    aspect-ratio: 8 / 1;
    object-fit: cover;
  }

  .mobile-ad-slot .wwwCDGWrap,
  .mobile-ad-slot .cdg-content,
  .mobile-ad-slot > * {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
  }

  .mobile-ad-slot .cdg-content span {
    display: none;
  }

  .mobile-menu-scrim {
    position: fixed;
    inset: 0;
    z-index: -1;
    display: block;
    visibility: hidden;
    background: rgba(0, 0, 0, 0.25);
    opacity: 0;
    transition: opacity 180ms ease, visibility 180ms ease;
  }

  .mobile-site-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    padding: 12px var(--cd-mobile-page-gutter) 18px;
    padding: 12px max(var(--cd-mobile-page-gutter), env(safe-area-inset-right))
      calc(18px + env(safe-area-inset-bottom))
      max(var(--cd-mobile-page-gutter), env(safe-area-inset-left));
    border-top: 1px solid #e9eef2;
    background: #fff;
    box-shadow: 0 12px 24px rgba(21, 42, 60, 0.14);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .mobile-site-menu a,
  .mobile-site-menu button {
    display: flex;
    min-height: 46px;
    padding: 0 12px;
    align-items: center;
    border: 0;
    border-bottom: 1px solid #edf1f4;
    background: #fff;
    color: #252525;
    font: inherit;
    font-size: 16px;
    text-align: left;
    width: 50%;
    box-sizing: border-box;
  }

  .mobile-site-header.is-menu-open .mobile-menu-scrim {
    z-index: 1;
    visibility: visible;
    opacity: 1;
  }

  .mobile-site-header.is-menu-open .mobile-site-menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  body.mobile-menu-open {
    overflow: hidden;
  }
}

@media (max-width: 374px) {
  :root {
    --cd-mobile-page-gutter: 16px;
  }

  .mobile-brand img {
    width: 108px;
  }

  .mobile-menu-toggle {
    min-width: 72px;
    font-size: 16px;
  }

  .mobile-menu-label {
    margin-right: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-menu-icon span,
  .mobile-menu-scrim,
  .mobile-site-menu {
    transition: none;
  }
}