/* ===== landing additions: inquiry (lead form) + products ===== */

/* local hero video object-fit */
.hero__video{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover;
  pointer-events:none; z-index:0;
}

:root{
  --lf-bg:#fafaf7;
  --lf-card:#ffffff;
  --lf-line:rgba(0,0,0,0.10);
  --lf-ink:#111;
  --lf-muted:#6b6b6b;
  --lf-accent:#c9a86a;
  --lf-accent-d:#a8884f;
  --lf-retire:#b4453a;
}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px;}

/* ---- INQUIRY ---- */
.inquiry{background:var(--lf-bg);padding:96px 0;border-bottom:1px solid var(--lf-line);}
.inquiry__inner{max-width:1180px;margin:0 auto;padding:0 28px;display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start;}
.inquiry__eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--lf-accent-d);font-weight:600;margin:0 0 14px;}
.inquiry__title{font-family:var(--ff-serif);font-weight:600;font-size:38px;line-height:1.15;margin:0 0 18px;color:var(--lf-ink);}
.inquiry__lead{font-size:16px;line-height:1.7;color:var(--lf-muted);margin:0 0 22px;max-width:420px;}
.inquiry__points{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-direction:column;gap:12px;}
.inquiry__points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--lf-ink);line-height:1.5;}
.inquiry__points li::before{content:"";position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:50%;background:var(--lf-accent);}
.inquiry__note{font-size:13.5px;color:var(--lf-muted);}
.inquiry__note a{color:var(--lf-accent-d);text-decoration:none;border-bottom:1px solid var(--lf-accent);}

.lead-form{background:var(--lf-card);border:1px solid var(--lf-line);border-radius:14px;padding:30px;box-shadow:0 18px 50px rgba(0,0,0,.05);}
.lf-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.lf-field{display:flex;flex-direction:column;margin-bottom:16px;}
.lf-field label{font-size:13px;font-weight:500;color:var(--lf-ink);margin-bottom:7px;}
.req{color:var(--lf-retire);font-weight:700;}
.opt{color:var(--lf-muted);font-weight:400;font-size:11.5px;letter-spacing:.04em;}
.lf-field input,.lf-field select,.lf-field textarea{
  font-family:inherit;font-size:14.5px;color:var(--lf-ink);
  background:#fbfbf9;border:1px solid var(--lf-line);border-radius:9px;
  padding:11px 13px;outline:none;transition:border-color .2s,box-shadow .2s;width:100%;
}
.lf-field textarea{resize:vertical;}
.lf-field input:focus,.lf-field select:focus,.lf-field textarea:focus{border-color:var(--lf-accent);box-shadow:0 0 0 3px rgba(201,168,106,.15);}
.lf-field input.invalid,.lf-field select.invalid,.lf-field textarea.invalid{border-color:var(--lf-retire);box-shadow:0 0 0 3px rgba(180,69,58,.12);}
.lf-agree{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--lf-muted);margin:4px 0 18px;line-height:1.5;}
.lf-agree input{margin-top:2px;width:16px;height:16px;accent-color:var(--lf-accent);flex:none;}
.lf-submit{width:100%;border:none;background:var(--c-bg-dark);color:#fff;font-size:15px;font-weight:600;
  padding:14px;border-radius:10px;cursor:pointer;transition:background .2s,transform .1s;font-family:inherit;}
.lf-submit:hover{background:#000;}
.lf-submit:active{transform:translateY(1px);}
.lf-submit:disabled{opacity:.6;cursor:progress;}
.lf-msg{margin:14px 0 0;font-size:13.5px;line-height:1.5;min-height:18px;}
.lf-msg.ok{color:#2f7d4f;}
.lf-msg.err{color:var(--lf-retire);}

/* ---- PRODUCTS ---- */
.products{background:#fff;padding:96px 0;}
.products__inner{max-width:1180px;margin:0 auto;padding:0 28px;}
.products__eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--lf-accent-d);font-weight:600;margin:0 0 10px;}
.products__title{font-family:var(--ff-serif);font-weight:600;font-size:34px;margin:0 0 12px;color:var(--lf-ink);}
.products__sub{font-size:15.5px;color:var(--lf-muted);max-width:620px;margin:0 0 40px;line-height:1.6;}
.products__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.pcard{background:var(--lf-bg);border:1px solid var(--lf-line);border-radius:14px;overflow:hidden;transition:transform .25s,box-shadow .25s;}
.pcard:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.08);}
.pcard__media{aspect-ratio:4/3;overflow:hidden;background:#eee;display:flex;align-items:center;justify-content:center;}
.pcard__media img{max-width:100%;max-height:100%;object-fit:contain;display:block;padding:14px;}
.pcard__body{padding:18px 18px 20px;}
.pcard__tag{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.04em;padding:3px 9px;border-radius:99px;margin-bottom:10px;}
.pcard__tag--on{background:rgba(201,168,106,.16);color:var(--lf-accent-d);}
.pcard__tag--off{background:rgba(180,69,58,.12);color:var(--lf-retire);}
.pcard h3{font-size:17px;margin:0 0 7px;color:var(--lf-ink);font-weight:600;}
.pcard p{font-size:13px;line-height:1.55;color:var(--lf-muted);margin:0;}
.pcard--retire{opacity:.92;}
.pcard--retire .pcard__media{filter:saturate(.6);}
.pcard--retire h3{color:#555;}

@media(max-width:900px){
  .inquiry__inner{grid-template-columns:1fr;gap:34px;}
  .products__grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:560px){
  .lf-row{grid-template-columns:1fr;}
  .products__grid{grid-template-columns:1fr;}
  .inquiry__title{font-size:30px;}
}

/* Footer search box (links to en.yunjichina.com.cn) */
.footer__search {
  display: flex;
  align-items: center;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 999px;
  padding: 4px 5px 4px 14px;
  background: rgba(255,255,255,0.05);
}
.footer__search input {
  background: transparent;
  border: none;
  outline: none;
  color: rgba(255,255,255,0.9);
  font-size: 13px;
  width: 150px;
  padding: 6px 0;
}
.footer__search input::placeholder { color: rgba(255,255,255,0.45); }
.footer__search button {
  border: none;
  background: #c9a86a;
  color: #1a1205;
  width: 30px; height: 30px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}
.footer__search button:hover { background: #d8b87e; }
@media (max-width: 900px) {
  .footer__search { order: 3; width: 100%; }
  .footer__search input { width: 100%; }
}

/* UPC40 commercial cleaning robot feature (full-bleed background banner) */
.fban {
  position: relative;
  overflow: hidden;
  padding: 120px var(--pad-x);
}
.fban__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.fban__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.fban__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 24, 48, 0.78) 0%, rgba(8, 24, 48, 0.55) 42%, rgba(8, 24, 48, 0.05) 78%);
}
.fban__inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw, 1320px);
  margin: 0 auto;
}
.fban__copy { max-width: 560px; }
.fban__eyebrow {
  font-size: 13px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 18px;
}
.fban__title {
  font-family: var(--ff-serif, 'Playfair Display', serif);
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 20px;
  color: #fff;
}
.fban__desc {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 28px;
}
.fban__points {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
}
.fban__points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 10px;
}
.fban__points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent, #c9a86a);
}
.fban__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 999px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.fban__cta:hover {
  background: #fff;
  color: #0b1e38;
  border-color: #fff;
}
[dir="rtl"] .fban__bg::after {
  background: linear-gradient(270deg, rgba(8, 24, 48, 0.78) 0%, rgba(8, 24, 48, 0.55) 42%, rgba(8, 24, 48, 0.05) 78%);
}
[dir="rtl"] .fban__copy { margin-left: auto; }
@media (max-width: 900px) {
  .fban { padding: 90px var(--pad-x); }
  .fban__bg::after {
    background: linear-gradient(180deg, rgba(8, 24, 48, 0.72) 0%, rgba(8, 24, 48, 0.45) 100%);
  }
  [dir="rtl"] .fban__bg::after {
    background: linear-gradient(180deg, rgba(8, 24, 48, 0.72) 0%, rgba(8, 24, 48, 0.45) 100%);
  }
}

/* =========== DUO MODULE (coffee robot + box) =========== */
.duo {
  background: var(--c-bg, #fafaf7);
  padding: 100px var(--pad-x) 110px;
}
.duo__inner {
  max-width: var(--maxw, 1320px);
  margin: 0 auto;
}
.duo__head { max-width: 720px; margin: 0 0 48px; }
.duo__eyebrow {
  font-size: 13px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--c-accent, #c9a86a);
  margin: 0 0 16px;
}
.duo__title {
  font-family: var(--ff-serif, 'Playfair Display', serif);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--c-text, #111);
}
.duo__sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text-muted, #555);
  margin: 0;
}
.duo__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.duo__card {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
}
.duo__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .08);
}
.duo__media {
  aspect-ratio: 4 / 3;
  background: #f3f3f0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.duo__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.duo__body { padding: 24px 26px 28px; }
.duo__body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--c-text, #111);
}
.duo__body p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-text-muted, #555);
  margin: 0;
}
.duo__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
  padding: 14px 24px;
  border: 1px solid var(--c-text, #111);
  border-radius: 999px;
  color: var(--c-text, #111);
  font-size: 14px;
  font-weight: 500;
  transition: background .2s ease, color .2s ease;
}
.duo__cta:hover {
  background: var(--c-text, #111);
  color: var(--c-bg, #fafaf7);
}
@media (max-width: 900px) {
  .duo { padding: 80px var(--pad-x) 90px; }
  .duo__grid { grid-template-columns: 1fr; }
}

/* =========== LANGUAGE SWITCHER =========== */
.lang-switcher { position: relative; }
.lang-switcher__btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 40px; box-sizing: border-box; padding: 0 14px;
  border: 1px solid rgba(255,255,255,0.4); border-radius: 999px;
  background: transparent; color: #fff; font-size: 14px; font-weight: 500;
  line-height: 1; cursor: pointer; white-space: nowrap;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.lang-switcher__btn:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.nav.is-scrolled .lang-switcher__btn { color: var(--c-text); border-color: rgba(0,0,0,0.25); }
.nav.is-scrolled .lang-switcher__btn:hover { background: var(--c-bg-dark); color: #fff; border-color: var(--c-bg-dark); }
.lang-switcher__menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 165px; margin: 0; padding: 6px; list-style: none;
  background: #fff; border-radius: 14px; box-shadow: 0 14px 44px rgba(0,0,0,0.18);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 200;
}
.lang-switcher.is-open .lang-switcher__menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switcher__menu li { margin: 0; }
.lang-switcher__menu button {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 9px 12px; border-radius: 9px; font-size: 14px; color: #1c1c1c; font-weight: 500;
}
.lang-switcher__menu button:hover { background: #f3f3f0; }
.lang-switcher__menu button.is-active { color: #1f3a5f; font-weight: 700; background: #eef1f5; }

/* =========== RTL (Arabic) =========== */
[dir="rtl"] .lang-switcher__menu { right: auto; left: 0; }
[dir="rtl"] .lang-switcher__menu button { text-align: right; }
[dir="rtl"] .footer__bottom,
[dir="rtl"] .footer__contact { direction: rtl; }
[dir="rtl"] .hero__scroll { flex-direction: row-reverse; }

/* =========== NAV (4 groups + switcher) =========== */
.nav__menu { gap: 28px; overflow: visible; }
.nav__link { font-size: 13px; white-space: nowrap; }
.nav__inner { gap: 24px; }

@media (max-width: 1200px) {
  .nav__inner { gap: 18px; }
  .nav__menu { gap: 20px; }
  .nav__link { font-size: 12px; }
}
@media (max-width: 1024px) {
  .nav__inner { gap: 16px; }
  .nav__menu { gap: 16px; overflow: visible; }
  .nav__link { font-size: 12px; white-space: nowrap; }
  .nav__cta span { display: none; }
  .nav__cta { padding: 0 12px; }
}

/* =========== FORM LABEL MARKS (req / optional) =========== */
.lf-field .req{color:#c0392b;font-weight:600;margin-left:2px;}
.lf-field .opt{display:inline-block;margin-left:6px;padding:1px 8px;border-radius:999px;font-size:11px;font-weight:400;color:var(--c-accent,#c9a86a);border:1px solid currentColor;opacity:.85;vertical-align:1px;}
[dir="rtl"] .lf-field .opt{margin-left:0;margin-right:6px;}

/* =========== DEALER BENEFITS =========== */
.dealer{background:linear-gradient(180deg, rgba(201,168,106,.10), rgba(201,168,106,.04));padding:64px var(--pad-x);border-top:1px solid rgba(201,168,106,.25);}
.dealer__inner{max-width:var(--maxw,1320px);margin:0 auto;text-align:center;}
.dealer__eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--c-accent,#c9a86a);margin:0 0 14px;font-weight:600;}
.dealer__title{font-family:var(--ff-serif,'Playfair Display',Georgia,serif);font-size:clamp(26px,3vw,38px);font-weight:600;margin:0 0 10px;color:var(--lf-ink,#111);}
.dealer__title:empty{display:none;}
.dealer__lead{font-size:15px;color:var(--lf-ink-muted,#555);margin:0 0 34px;}
.dealer__grid{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:0;margin:0;max-width:980px;margin-inline:auto;}
.dealer__grid li{display:flex;align-items:center;justify-content:center;gap:10px;padding:18px 14px;background:#fff;border:1px solid rgba(201,168,106,.35);border-radius:14px;font-size:15px;font-weight:500;color:var(--lf-ink,#111);box-shadow:0 6px 18px rgba(0,0,0,.04);}
.dealer__grid li::before{content:'';flex:none;width:8px;height:8px;border-radius:50%;background:var(--c-accent,#c9a86a);}
@media (max-width:900px){.dealer__grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.dealer__grid{grid-template-columns:1fr;}}

/* =========== HDOS GUEST PLATFORM =========== */
.hdos{background:var(--c-bg,#fafaf7);padding:100px var(--pad-x);}
.hdos__inner{max-width:var(--maxw,1320px);margin:0 auto;display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center;}
.hdos__eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--c-accent,#c9a86a);margin:0 0 16px;font-weight:600;}
.hdos__title{font-family:var(--ff-serif,'Playfair Display',Georgia,serif);font-size:clamp(30px,3.6vw,46px);font-weight:600;margin:0 0 14px;color:var(--lf-ink,#111);}
.hdos__desc{font-size:16px;line-height:1.7;color:var(--lf-ink-muted,#555);margin:0 0 30px;}
.hdos__feats{display:grid;gap:18px;}
.hdos__feat{border-left:3px solid var(--c-accent,#c9a86a);padding-left:16px;}
[dir="rtl"] .hdos__feat{border-left:none;border-right:3px solid var(--c-accent,#c9a86a);padding-left:0;padding-right:16px;}
.hdos__feat h3{font-size:16px;font-weight:600;margin:0 0 6px;color:var(--lf-ink,#111);}
.hdos__feat p{font-size:14px;line-height:1.7;color:var(--lf-ink-muted,#555);margin:0;}
.hdos__media{display:grid;gap:18px;}
.hdos__platform{border-radius:16px;overflow:hidden;box-shadow:0 18px 44px rgba(0,0,0,.10);background:#f2f6fb;}
.hdos__platform img{display:block;width:100%;height:auto;}
.hdos__room{border-radius:16px;overflow:hidden;box-shadow:0 14px 34px rgba(0,0,0,.08);}
.hdos__room img{display:block;width:100%;height:auto;}
@media (max-width:900px){.hdos__inner{grid-template-columns:1fr;gap:36px;}}

/* =========== FACTORY ROBOTS =========== */
.factory{background:#0b1220;color:#fff;padding:100px var(--pad-x);}
.factory__inner{max-width:var(--maxw,1320px);margin:0 auto;}
.factory__eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:#c9a86a;margin:0 0 14px;font-weight:600;}
.factory__title{font-family:var(--ff-serif,'Playfair Display',Georgia,serif);font-size:clamp(30px,3.6vw,46px);font-weight:600;margin:0 0 12px;}
.factory__desc{font-size:16px;line-height:1.7;color:rgba(255,255,255,.72);margin:0 0 40px;max-width:720px;}
.factory__family{margin:26px 0 0;border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.08);}
.factory__family img{display:block;width:100%;height:auto;}
.factory__row{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:stretch;}
.factory__cells{display:flex;flex-direction:column;gap:24px;padding:34px 22px 30px;background:linear-gradient(180deg,#131c2e,#0d1524);border-radius:16px;border:1px solid rgba(255,255,255,.08);}
.factory__hero{display:flex;align-items:flex-end;justify-content:center;}
.factory__hero img{display:block;height:230px;width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 12px 20px rgba(0,0,0,.5));}
.factory__line{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:center;gap:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);}
.factory__cell{display:flex;align-items:flex-end;justify-content:center;}
.factory__cell img{display:block;height:120px;width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 8px 14px rgba(0,0,0,.45));}
.factory__solution{background:#fff;color:#111;border-radius:16px;padding:26px 26px 30px;display:flex;flex-direction:column;box-shadow:0 20px 50px rgba(0,0,0,.35);}
.factory__solution-img{border-radius:10px;overflow:hidden;margin-bottom:18px;background:#f6f8fc;}
.factory__solution-img img{display:block;width:100%;height:auto;}
.factory__solution h3{font-size:17px;font-weight:600;margin:0 0 12px;}
.factory__solution ul{list-style:none;padding:0;margin:0;}
.factory__solution li{position:relative;padding-left:18px;font-size:14px;color:#444;margin-bottom:8px;line-height:1.55;}
.factory__solution li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:#2f6fed;}
[dir="rtl"] .factory__solution li{padding-left:0;padding-right:18px;}
[dir="rtl"] .factory__solution li::before{left:auto;right:0;}
@media (max-width:900px){
  .factory__row{grid-template-columns:1fr;}
  .factory__hero img{height:170px;}
  .factory__cell img{height:88px;}
  .factory__line{gap:20px;}
}

/* =========== NAV GROUP DROPDOWN =========== */
.nav__group{position:relative;}
.nav__check{
  position:absolute;left:0;top:0;width:1px;height:1px;
  margin:0;padding:0;border:0;opacity:0;pointer-events:none;
}
.nav__toggle{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:0;padding:0;margin:0;cursor:pointer;
  -webkit-user-select:none;user-select:none;
  color:#fff;font-family:inherit;font-size:14px;font-weight:500;letter-spacing:.02em;
  line-height:1.5;transition:opacity .2s ease;
}
.nav.is-scrolled .nav__toggle{color:var(--c-text);}
.nav__toggle:hover{opacity:.75;}
.nav__caret{transition:transform .25s ease;}
.nav__group.is-open .nav__caret,
.nav__group:hover .nav__caret,
.nav__check:checked ~ .nav__toggle .nav__caret{transform:rotate(180deg);}
.nav__dropdown{
  position:absolute;top:calc(100% + 20px);left:50%;
  transform:translateX(-50%) translateY(8px);
  min-width:196px;background:#fff;border-radius:14px;
  box-shadow:0 18px 44px rgba(15,23,42,.18),0 2px 8px rgba(15,23,42,.06);
  border:1px solid rgba(15,23,42,.06);
  padding:8px;opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  z-index:120;
}
/* 纯 CSS 展开：悬停 / 勾选（点击 label）/ 键盘聚焦，三者任一即显示，不依赖 JS */
.nav__group.is-open .nav__dropdown,
.nav__group:hover .nav__dropdown,
.nav__group:focus-within .nav__dropdown,
.nav__check:checked ~ .nav__dropdown{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.nav__dropdown a{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:13.5px;color:#1f2937;white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav__dropdown a:hover{background:#f2f5fb;color:#1b3a6b;}
.nav__dropdown::before{
  content:'';position:absolute;top:-20px;left:0;right:0;height:20px;
}
[dir="rtl"] .nav__dropdown a{text-align:right;}
.nav__group:focus-within .nav__dropdown{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.nav__group.is-pinned .nav__toggle{opacity:1;}
.nav__group.is-pinned .nav__dropdown{
  box-shadow:0 22px 52px rgba(15,23,42,.22),0 2px 8px rgba(15,23,42,.08);
}

/* ===== 数据来源标注 / 页脚数据口径（2026-10-12） ===== */
.about-src{font-style:normal;font-size:.82em;color:#8a8f98;}
.hdos__src{margin:10px 4px 0;font-size:12px;line-height:1.6;color:var(--lf-ink-muted,#777);letter-spacing:.02em;}
.footer__datanote{max-width:var(--maxw,1320px);margin:0 auto 14px;padding:0 32px;font-size:12px;line-height:1.6;color:#8a8f98;letter-spacing:.02em;}

/* ===== 隐私说明弹窗（2026-10-12） ===== */
.footer__privacy{background:none;border:none;padding:0;margin:0 0 0 14px;color:inherit;font:inherit;letter-spacing:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer;opacity:.85;}
.footer__privacy:hover{opacity:1;}
.privacy-modal{position:fixed;inset:0;z-index:400;display:none;}
.privacy-modal.is-open{display:block;}
.privacy-modal__backdrop{position:absolute;inset:0;background:rgba(8,16,28,.55);backdrop-filter:blur(2px);}
.privacy-modal__panel{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(680px,calc(100vw - 40px));max-height:min(78vh,720px);overflow:auto;background:#fff;border-radius:16px;padding:38px 34px 30px;box-shadow:0 24px 64px rgba(0,0,0,.28);}
.privacy-modal__close{position:absolute;top:14px;right:16px;width:36px;height:36px;border:none;background:#eef2f7;border-radius:50%;font-size:20px;line-height:1;color:#333;cursor:pointer;}
.privacy-modal__close:hover{background:#e2e8f0;}
.privacy-modal__panel h2{margin:0 0 14px;font-size:22px;color:#0b2239;font-family:var(--ff-sans,inherit);}
.privacy-modal__body h3{margin:18px 0 6px;font-size:15px;color:#0b2239;}
.privacy-modal__body p{margin:0 0 8px;font-size:14px;line-height:1.85;color:#40506a;}
.privacy-modal__body a{color:#1273d4;text-decoration:underline;}
body.privacy-lock{overflow:hidden;}
[dir="rtl"] .privacy-modal__close{right:auto;left:16px;}