/* 麒典 · 全站统一导航（只抽 header 规则）· 2026-09-03
   ------------------------------------------------------------------
   为什么单抽一张表：把 qidian-system-home.css 整张挂到旧版页上试过一次，
   导航是对的，但正文跟着一起换了皮，而且更差 —— 标题变小、版心变窄、
   原来的暗色面板变成米白卡片。所以只取 header 那一部分。

   两条抽取判据：
   ① 选择器里同时写了 header 类和页面类（.btn.gold,.nav-cta,.qds-btn--primary
      这种）时，只留 header 那一段，不整条丢掉 —— 整条丢掉会让主按钮没样式，
      整条留下会把 125 页上所有 .btn 一起改掉。
   ② 每条都收进 header 作用域，就算有漏网的选择器也够不着正文。 */
header .site-head{
  min-height: var(--qds-nav-height);
  background: rgba(21, 23, 20, .96);
  border-bottom: 1px solid var(--qds-line-dark);
  color: var(--qds-white);
  backdrop-filter: blur(18px);
}
header .brand b,header .brand span,header .nav-links a,header .nav-cta{
  letter-spacing: 0;
}
header .brand b{
  font-weight: 600;
}
header .brand span{
  opacity: .72;
}
header .nav-links a{
  position: relative;
}
header .nav-links a::after{
  position: absolute;
  right: 0;
  bottom: -10px;
  left: 0;
  height: 1px;
  background: var(--qds-gold-soft);
  content: "";
  opacity: 0;
  transform: scaleX(.35);
  transition: opacity .2s ease, transform .2s ease;
}
header .nav-links a:hover::after,header .nav-links a[aria-current="page"]::after{
  opacity: 1;
  transform: scaleX(1);
}
header .nav-cta{
  min-height: 44px;
  border-radius: var(--qds-radius);
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
header .nav-cta{
  background: var(--qds-gold-soft);
  color: var(--qds-ink);
}
header .nav-actions{
  display: flex;
  gap: 10px;
  align-items: center;
}
header .nav-member{
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border: 1px solid rgba(255, 253, 248, .24);
  padding: 10px 13px;
  color: var(--qds-white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}
header .nav-cta:active,header .nav-member:active{
  transform: scale(.96);
}
header .nav-member:hover,header .nav-member[aria-current="page"]{
  border-color: var(--qds-gold-soft);
  color: var(--qds-gold-soft);
}
@media (max-width: 1000px){
header .nav-actions .nav-cta{
    display: inline-flex;
  }
header .nav-actions .nav-member{
    display: none;
  }
}
@media (max-width: 760px){
header .brand{
    gap: 8px;
    min-width: 0;
  }
header .brand img{
    width: 38px;
    height: 38px;
  }
header .brand b{
    font-size: 16px;
    white-space: nowrap;
  }
header .brand span{
    display: none;
  }
header .nav-actions{
    flex: 0 0 auto;
  }
header .nav-member{
    min-height: 42px;
    padding: 8px 10px;
    font-size: 12px;
    white-space: nowrap;
  }
}
header .nav-cta{
  border-radius:var(--qds-radius);
  transition:transform .16s var(--qd-ease),background-color .16s var(--qd-ease),color .16s var(--qd-ease);
}
header .nav-cta{
  background:var(--qds-cream); color:#14120C; border:1px solid transparent;
}
header .nav-cta:hover{background:#FFFDF8;transform:translateY(-1px)}
header button.nav-cta{font:inherit;font-weight:800;cursor:pointer;
  padding:11px 16px;letter-spacing:.04em}
header .site-head a:focus-visible,header .site-head button:focus-visible{outline-color:var(--qds-cream)}
header .nav-search{background:transparent;border:1px solid rgba(255,255,255,.26);
  color:#D9D2C4;border-radius:var(--qds-radius);cursor:pointer;font:inherit;
  font-size:13px;padding:9px 13px;display:inline-flex;align-items:center;gap:7px;
  transition:border-color .16s var(--qd-ease),color .16s var(--qd-ease)}
header .nav-search:hover{border-color:#FFFDF8;color:#FFFDF8}
header .nav-search kbd{font:11px/1 ui-monospace,monospace;opacity:.7;
  border:1px solid currentColor;border-radius:3px;padding:2px 4px}
@media(max-width:620px){
header .nav-search kbd{display:none}
}
header .site-head{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
header .site-head{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
header .brand{min-width:0;flex-shrink:0}
header .brand div{min-width:0}
header .nav-actions{flex-shrink:0}
header .brand b{white-space:nowrap}
header .brand span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:520px){
header .brand span{display:none}
header .brand img{width:34px;height:34px}
}
header .nav-cta{
  background:#EFE9DC !important;color:#080706 !important;
  border-color:transparent !important;
}
header .nav-cta:hover{
  background:#FFFDF8 !important;color:#080706 !important;
}
header .qnav{display:flex;align-items:center;gap:clamp(4px,1vw,14px)}
header .site-head .nav{position:relative}
header .qnav__item{position:static}
header .qnav__top{
  display:block;
  padding:8px 10px;
  font-size:14px;
  color:#9A9384;
  text-decoration:none;
  white-space:nowrap;
  transition:color .16s cubic-bezier(.25,.46,.45,.94);
}
header .qnav__item:hover .qnav__top,header .qnav__item:focus-within .qnav__top,header .qnav__top:focus-visible{color:#F4F0E7}
header .qnav__panel{
  position:absolute;
  top:calc(100% + 14px);
  left:50%;
  z-index:60;
  width:min(920px,92vw);
  transform:translate(-50%,-6px);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .16s cubic-bezier(.25,.46,.45,.94),
             transform .18s cubic-bezier(.25,.46,.45,.94),
             visibility 0s linear .18s;
}
header .qnav__panel::before{
  content:"";position:absolute;left:0;right:0;top:-16px;height:16px;
}
header .qnav__item:hover .qnav__panel,header .qnav__item:focus-within .qnav__panel{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translate(-50%,0);
  transition-delay:0s,0s,0s;
}
header .qnav__inner{
  display:grid;
  grid-template-columns:186px minmax(0,1fr);
  gap:clamp(18px,2vw,30px);
  padding:clamp(20px,2.2vw,28px);
  background:#0E0D0B;
  border:1px solid rgba(237,237,242,.11);
  box-shadow:0 1px 2px rgba(0,0,0,.5),
             0 30px 70px rgba(0,0,0,.55),
             0 0 0 1px rgba(200,169,106,.05);
}
header .qnav__lead b{
  display:block;margin-bottom:8px;
  font-size:15px;font-weight:500;color:#F4F0E7;
}
header .qnav__lead span{
  display:block;
  font-size:12.5px;line-height:1.72;color:#8A8478;
}
header .qnav__cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(178px,1fr));
  gap:clamp(14px,1.6vw,24px);
}
header .qnav__col h4{
  margin:0 0 10px;
  font-size:10.5px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;
  color:#C49749;
}
header .qnav__col a{
  display:block;
  margin:0 -8px;
  padding:7px 8px;
  text-decoration:none;
  border-radius:2px;
  transition:background-color .14s cubic-bezier(.25,.46,.45,.94);
}
header .qnav__col a:hover,header .qnav__col a:focus-visible{background:#14120C}
header .qnav__col b{
  display:block;
  font-size:13.5px;font-weight:500;line-height:1.5;
  color:#F4F0E7;
}
header .qnav__col span{
  display:block;margin-top:2px;
  font-size:11.5px;line-height:1.58;color:#8A8478;
}
header .qnav__feat{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:6px 14px;
  margin-top:4px;
  padding:14px 16px;
  border:1px solid rgba(200,169,106,.22);
  background:linear-gradient(100deg,
    rgba(200,169,106,.075) 0%,rgba(200,169,106,.012) 60%,transparent 100%);
  text-decoration:none;
  transition:border-color .16s cubic-bezier(.25,.46,.45,.94);
}
header .qnav__feat:hover{border-color:rgba(200,169,106,.5)}
header .qnav__feat b{font-size:14px;font-weight:500;color:#F4F0E7}
header .qnav__feat span{font-size:12.5px;line-height:1.66;color:#9A9384}
header .qnav__feat em{
  margin-left:auto;
  display:flex;align-items:center;gap:6px;
  font-style:normal;font-size:12.5px;font-weight:500;color:#C49749;
}
header .qnav__feat i{
  display:inline-block;transform:translateX(0);
  transition:transform .16s cubic-bezier(.25,.46,.45,.94);
}
header .qnav__feat:hover i{transform:translateX(4px)}
@media(prefers-reduced-motion:reduce){
header .qnav__panel{transition:opacity .01s,visibility .01s}
header .qnav__panel,header .qnav__item:hover .qnav__panel{transform:translate(-50%,0)}
header .qnav__col a,header .qnav__feat,header .qnav__feat i,header .qnav__top{transition:none}
}

/* 移动端抽屉 —— 与首页同一份写法（原文在 qidian-mobile.css，只有首页加载它）
   site.css 在手机上把 .nav-links 收起来，而 .qnav{display:flex} 后加载又把它
   打开了，于是汉堡按钮点了没反应、导航一直摊在首屏上。所以这里带 html body
   前缀压过去。星河色写成字面值：--xh-* 定义在 qidian-xh.css，这些页面不加载
   它，变量取不到会让整条声明作废。 */
@media (max-width:1000px){
  html body .nav-links.qnav{display:none!important}
  html body .nav-links.qnav.open{display:flex!important}

  /* 抽屉贴着 header 走,不写死 76px —— 这条 bar 在 consult 上是 73px、
     别处是 77px，写死会在其中一边留出一道缝。header.site-head 是 sticky，
     它就是定位参照，top:100% 正好落在 bar 下沿。 */
  /* 定位参照必须是整条 header：consult 的 .nav.shell 是 relative，
     不还原成 static，抽屉会贴到它 92vw 的版心上（实测 left=16 right=374） */
  html body header .nav.shell{position:static!important}
  html body header .nav-links.qnav.open{
    position:absolute!important;top:100%!important;
    left:0!important;right:0!important;width:auto!important;
    flex-direction:column!important;align-items:flex-start!important;
    z-index:40!important}
  html body .menu{display:block!important}

  html body .nav-links.qnav.open{
    background:#14120C!important;
    border-bottom:1px solid rgba(196,151,73,.14)!important;
    padding:18px 5vw 26px!important;gap:2px!important}
  html body .nav-links.qnav.open .qnav__item{width:100%}
  html body .nav-links.qnav.open .qnav__top{
    display:block;width:100%;padding:15px 0!important;
    font-size:16px!important;line-height:1.85!important;
    border-bottom:1px solid rgba(240,236,228,.08)!important}
  /* 手机上一层就够，不展开二级面板 */
  html body .nav-links.qnav .qnav__panel{display:none!important}

  /* site.css 在手机上把主 CTA 藏了，首屏第一眼该有个能点的动作 */
  html body .nav-cta{display:inline-flex!important;
    padding:8px 13px!important;font-size:13px!important}
}