/* 全站共用:自己画的下拉浮层(web/ui.js)、折叠的语言菜单、展开时的出场动画。颜色跟各页的变量走(没有变量时用括号里的默认值)。 */

/* ---------- 下拉浮层 ---------- */
.ns-pop { position: fixed; z-index: 4000; padding: 6px; border-radius: var(--ns-r, 16px); background: var(--card, #fff); color: var(--ink, #1d1d1f); border: 1px solid var(--line, #e4e4e6);
  box-shadow: 0 2px 6px rgba(29,29,31,.06), 0 24px 60px rgba(29,29,31,.18); font: 500 15.5px/1.3 var(--font, system-ui, sans-serif); transform-origin: top center; animation: ns-in .18s cubic-bezier(.2,.8,.2,1); }
.ns-pop.up { transform-origin: bottom center; animation-name: ns-in-up; }
@keyframes ns-in { from { opacity: 0; transform: translateY(-8px) scale(.97); } }
@keyframes ns-in-up { from { opacity: 0; transform: translateY(8px) scale(.97); } }
.ns-q { display: block; width: 100%; height: 42px; margin: 0 0 6px; padding: 0 14px; border: 1px solid var(--line, #e4e4e6); border-radius: calc(var(--ns-r, 16px) - 6px); background: var(--field, #f4f4f7); font: inherit; color: inherit; outline: 0; }
.ns-q:focus { border-color: var(--ink, #1d1d1f); }
.ns-list { overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
.ns-o { padding: 10px 14px; border-radius: calc(var(--ns-r, 16px) - 6px); cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; animation: ns-o .22s ease-out backwards; }
@keyframes ns-o { from { opacity: 0; transform: translateY(-4px); } }
.ns-o.act { background: var(--field, #f1f1f3); }
.ns-o.sel { font-weight: 700; } .ns-o.sel::after { content: "✓"; float: right; margin-left: 12px; color: var(--accent, #7b2fd1); }
.ns-o.ph { color: var(--mute, #606061); } .ns-o.dis { opacity: .45; cursor: default; }
.ns-none { padding: 14px; color: var(--mute, #606061); text-align: center; }
select.ns-open { outline: 2px solid var(--ink, #1d1d1f); outline-offset: -2px; }

/* ---------- 语言菜单(折叠):深色半透明胶囊按钮 + 白色圆角菜单(他给的参考图);国际站带国旗、排成几列 ---------- */
details.lang { position: relative; font: 700 14px/1 var(--font, system-ui, sans-serif); }
details.lang > summary { display: inline-flex; align-items: center; gap: 10px; height: 38px; padding: 0 12px 0 16px; border-radius: 999px; cursor: pointer; list-style: none; user-select: none; white-space: nowrap; letter-spacing: .03em;
  background: rgba(36,36,40,.78); -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4); color: #fff;
  border: 1.5px solid rgba(255,255,255,.92); box-shadow: 0 0 0 1px rgba(20,20,22,.55), 0 6px 18px rgba(20,20,22,.18); transition: background-color .15s, box-shadow .15s, transform .1s; }
details.lang > summary::-webkit-details-marker { display: none; }
details.lang > summary > span { padding-inline-end: 10px; border-inline-end: 1px solid rgba(255,255,255,.32); line-height: 18px; }
details.lang > summary::after { content: ""; width: 6px; height: 6px; margin: -3px 2px 0 0; border: solid rgba(255,255,255,.62); border-width: 0 1.6px 1.6px 0; transform: rotate(45deg); transition: transform .2s, margin .2s; }
details.lang[open] > summary::after { transform: rotate(-135deg); margin-top: 3px; }
details.lang > summary:hover { background: rgba(28,28,32,.88); box-shadow: 0 0 0 1px rgba(20,20,22,.6), 0 8px 22px rgba(20,20,22,.24); } details.lang > summary:active { transform: scale(.97); }
.flag { display: block; flex: none; width: 22px; height: 15px; border-radius: 3px; box-shadow: 0 0 0 1px rgba(29,29,31,.16); }
details.lang > summary .flag { box-shadow: 0 0 0 1px rgba(255,255,255,.35); }
details.lang:not([open]) .lang-m { display: none; }   /* 收起时不占排版位置(否则从右往左的页面会被撑宽) */
details.lang .lang-m { position: absolute; inset-inline-end: 0; top: calc(100% + 10px); z-index: 3000; min-width: 168px; padding: 6px; border-radius: 18px; background: #fff; color: #1d1d1f; border: 0;
  box-shadow: 0 0 0 1px rgba(29,29,31,.05), 0 4px 10px rgba(29,29,31,.06), 0 18px 44px rgba(29,29,31,.16); transform-origin: top right; animation: ns-in .18s cubic-bezier(.2,.8,.2,1); text-align: left; }
details.lang .lang-m a { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 12px; color: #6e6e73; text-decoration: none; font-weight: 500; font-size: 15px; white-space: nowrap; transition: background-color .12s, color .12s; }
details.lang .lang-m a span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
details.lang .lang-m a:hover { background: #f5f5f7; color: #1d1d1f; }
details.lang .lang-m a.on { background: #f0f0f2; color: #1d1d1f; font-weight: 700; }
details.lang .lang-m a.on::after { content: ""; flex: none; width: 5px; height: 10px; margin: -3px 3px 0 auto; margin-inline-start: 12px; border: solid #1d1d1f; border-width: 0 1.8px 1.8px 0; transform: rotate(45deg); }
details.lang.wide .lang-m { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; width: min(720px, calc(100vw - 24px)); }
@media (max-width: 900px) { details.lang.wide .lang-m { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 620px) { details.lang.wide .lang-m { position: fixed; left: 12px; right: 12px; top: 68px; width: auto; grid-template-columns: repeat(2, minmax(0, 1fr)); max-height: calc(100dvh - 90px); overflow-y: auto; } }

/* ---------- 展开时的出场动画(适配车型、年款、车型列表这些折叠块) ---------- */
details:not(.lang)[open] > :not(summary) { animation: ns-fold .26s cubic-bezier(.2,.8,.2,1); }
@keyframes ns-fold { from { opacity: 0; transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .ns-pop, .ns-o, details.lang .lang-m, details[open] > :not(summary) { animation: none !important; } }

/* ---------- 从右往左的语言(阿拉伯语、波斯语、希伯来语):下拉浮层里的对勾换到左边 ---------- */
[dir="rtl"] details.lang .lang-m { right: auto; left: 0; transform-origin: top left; }
@media (max-width: 620px) { [dir="rtl"] details.lang.wide .lang-m { left: 12px; right: 12px; } }
[dir="rtl"] .ns-o.sel::after { float: left; margin: 0 12px 0 0; } [dir="rtl"] .ns-pop { text-align: right; }