/* ==========================================================
   LUME — Dynamic Island storefront
   Dark, capsule-first design language. Spring motion everywhere.
   ========================================================== */

:root{
  --bg:#08090b;
  --bg-2:#0c0e12;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.075);
  --surface-3:rgba(255,255,255,.11);
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.16);
  --ink:#f5f5f7;
  --muted:#8b8d96;
  --faint:#5d6069;
  --brand:#c9a7ff;
  --brand-2:#8ad8ff;
  --brand-3:#ffb3d1;
  --ok:#7ee0a8;
  --warn:#ffd479;
  --danger:#ff9292;
  --spring:cubic-bezier(.34,1.56,.64,1);
  --ease:cubic-bezier(.22,.8,.3,1);
  --r:28px;
  --island-h:48px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  letter-spacing:-.01em;
  min-height:100vh;
  overflow-x:hidden;
}
/* ambient light — moves with the pointer */
body::before{
  content:"";
  position:fixed; inset:-30% -10% auto -10%; height:90vh;
  background:
    radial-gradient(38vw 38vw at calc(28% + var(--mx,0px)) calc(18% + var(--my,0px)), rgba(201,167,255,.16), transparent 70%),
    radial-gradient(34vw 34vw at calc(76% - var(--mx,0px)) calc(12% + var(--my,0px)), rgba(138,216,255,.12), transparent 72%);
  filter:blur(18px);
  pointer-events:none; z-index:0;
}
.wrap{width:min(1120px,calc(100% - 40px));margin:0 auto;position:relative;z-index:1}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.035em;line-height:1.15}
h1{font-size:clamp(38px,6vw,68px)}
h2{font-size:clamp(26px,3.4vw,38px)}
h3{font-size:19px}
p{margin:0 0 12px}
.muted{color:var(--muted)}
.tiny{font-size:12.5px}
.small{font-size:13.5px}
.center{text-align:center}
.placeholder{color:var(--warn);background:rgba(255,212,121,.10);border:1px dashed rgba(255,212,121,.42);padding:0 5px;border-radius:6px;font-size:.9em}

/* ---------- demo banner ---------- */
.demo-bar{
  position:relative;z-index:2;
  text-align:center;font-size:11.5px;letter-spacing:.02em;
  padding:7px 16px;
  color:#ffdca6;
  background:rgba(255,180,80,.09);
  border-bottom:1px solid rgba(255,180,80,.20);
  backdrop-filter:blur(12px);
}

/* ---------- Dynamic Island ---------- */
.island{
  position:fixed;top:44px;left:50%;transform:translateX(-50%);
  width:248px;height:var(--island-h);
  border-radius:999px;
  background:rgba(9,10,13,.82);
  backdrop-filter:blur(26px) saturate(180%);
  -webkit-backdrop-filter:blur(26px) saturate(180%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 18px 50px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.10);
  z-index:1000;overflow:hidden;
  transition:width .58s var(--spring),height .58s var(--spring),border-radius .5s var(--ease),box-shadow .4s var(--ease);
  cursor:pointer;
}
.island:hover{box-shadow:0 22px 60px rgba(0,0,0,.65),inset 0 1px 0 rgba(255,255,255,.16)}
.island.is-expanded{
  width:min(520px,calc(100vw - 28px));height:246px;border-radius:32px;cursor:default;
}
.island.is-toast{
  width:min(370px,calc(100vw - 28px));height:66px;border-radius:999px;cursor:default;
}
.island-layer{
  position:absolute;inset:0;
  display:flex;align-items:center;
  opacity:0;transform:scale(.92) translateY(6px);
  pointer-events:none;
  transition:opacity .3s var(--ease),transform .45s var(--spring);
}
.island-layer.is-on{opacity:1;transform:none;pointer-events:auto}

/* compact state */
.island-compact{padding:0 14px 0 16px;justify-content:space-between;gap:12px}
.island-id{display:flex;align-items:center;gap:9px;min-width:0}
.island-orb{
  width:14px;height:14px;border-radius:50%;flex:none;
  background:conic-gradient(from 0deg,var(--brand),var(--brand-2),var(--brand-3),var(--brand));
  box-shadow:0 0 14px rgba(201,167,255,.65);
  animation:orb-breathe 3.4s ease-in-out infinite;
}
@keyframes orb-breathe{0%,100%{transform:scale(.86);opacity:.75}50%{transform:scale(1.08);opacity:1}}
.island-brand{font-weight:650;font-size:14px;letter-spacing:.08em;white-space:nowrap}
.island-hint{font-size:11.5px;color:var(--faint);white-space:nowrap}
.island-bag{
  display:flex;align-items:center;gap:7px;flex:none;
  padding:5px 9px 5px 11px;border-radius:999px;
  background:rgba(255,255,255,.09);font-size:12px;font-weight:600;
}
.island-bag b{
  min-width:18px;height:18px;padding:0 5px;border-radius:999px;
  display:grid;place-items:center;font-size:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0a0a0c;
}
.island-bag.is-bump b{animation:bag-bump .6s var(--spring)}
@keyframes bag-bump{0%{transform:scale(1)}35%{transform:scale(1.45) rotate(-8deg)}100%{transform:scale(1)}}

/* expanded panel */
.island-panel{display:block;padding:20px 22px;overflow:auto}
.island-panel .ip-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.island-panel .ip-head strong{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.island-close{
  border:0;background:rgba(255,255,255,.09);color:var(--ink);
  width:26px;height:26px;border-radius:50%;cursor:pointer;font-size:15px;line-height:1;
}
.island-close:hover{background:rgba(255,255,255,.18)}
.ip-links{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}
.ip-links a{
  padding:11px 6px;border-radius:16px;text-align:center;font-size:12.5px;font-weight:550;
  background:var(--surface);border:1px solid var(--line);
  transition:transform .35s var(--spring),background .25s var(--ease),border-color .25s var(--ease);
}
.ip-links a:hover{transform:translateY(-3px);background:var(--surface-2);border-color:var(--line-2)}
.ip-links a .ic{display:block;font-size:17px;margin-bottom:3px}
.ip-bag{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:18px;
  background:linear-gradient(110deg,rgba(201,167,255,.14),rgba(138,216,255,.10));
  border:1px solid rgba(201,167,255,.22);
  font-size:13px;
}
.ip-bag .amt{font-weight:650;font-size:15px}

/* toast state */
.island-toast{padding:0 18px;gap:13px}
.island-check{
  width:30px;height:30px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:rgba(126,224,168,.16);color:var(--ok);font-size:16px;font-weight:700;
  animation:check-in .6s var(--spring);
}
@keyframes check-in{0%{transform:scale(.2) rotate(-40deg);opacity:0}100%{transform:none;opacity:1}}
.island-toast .txt{min-width:0;flex:1}
.island-toast .txt b{display:block;font-size:13.5px;line-height:1.25}
.island-toast .txt span{display:block;font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.island-toast .go{font-size:12px;font-weight:650;color:var(--brand-2);white-space:nowrap}

/* ---------- buttons / chips ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;border:1px solid transparent;
  background:var(--ink);color:#0a0a0c;font-weight:650;font-size:14px;cursor:pointer;
  transition:transform .4s var(--spring),box-shadow .3s var(--ease),background .25s var(--ease);
}
.btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 12px 30px rgba(255,255,255,.16)}
.btn:active{transform:scale(.97)}
.btn.secondary{background:var(--surface-2);color:var(--ink);border-color:var(--line)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn.block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn.accent{background:linear-gradient(110deg,var(--brand),var(--brand-2));color:#0a0a0c}
.chip{
  padding:8px 16px;border-radius:999px;font-size:12.5px;font-weight:550;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);cursor:pointer;
  transition:transform .35s var(--spring),background .25s var(--ease),color .25s var(--ease);
}
.chip:hover{transform:translateY(-2px);color:var(--ink)}
.chip.active{background:var(--ink);color:#0a0a0c;border-color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:132px 0 54px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-2);
  padding:7px 14px;border-radius:999px;background:rgba(138,216,255,.08);
  border:1px solid rgba(138,216,255,.20);margin-bottom:22px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px var(--brand-2)}
.hero h1{max-width:620px}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),var(--brand-2) 55%,var(--brand-3));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{font-size:17px;color:var(--muted);max-width:480px;margin:20px 0 28px;line-height:1.65}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-art{position:relative;display:grid;place-items:center;min-height:340px}
.hero-art::before{
  content:"";position:absolute;width:78%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(201,167,255,.24),transparent 68%);
  filter:blur(30px);animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(-8px) scale(.97)}50%{transform:translateY(12px) scale(1.04)}}
.hero-art img{
  position:relative;width:min(330px,86%);border-radius:36px;
  box-shadow:0 30px 80px rgba(0,0,0,.55);
  animation:float 7s ease-in-out infinite reverse;
  border:1px solid var(--line);
}
.trust{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:12.5px;color:var(--muted);text-align:center;
}
.trust b{display:block;color:var(--ink);font-size:13.5px;margin-bottom:2px}

/* ---------- sections / cards ---------- */
.block{padding:64px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head p{color:var(--muted);font-size:13.5px;margin-top:8px}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;position:relative;
  transition:transform .5s var(--spring),border-color .3s var(--ease),background .3s var(--ease);
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:var(--r);pointer-events:none;
  background:linear-gradient(140deg,rgba(255,255,255,.09),transparent 40%);opacity:0;transition:opacity .35s var(--ease);
}
.card:hover{transform:translateY(-8px);border-color:var(--line-2);background:var(--surface-2)}
.card:hover::after{opacity:1}
.card .thumb{display:block;aspect-ratio:1;overflow:hidden;background:var(--bg-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.card:hover .thumb img{transform:scale(1.06)}
.card .body{padding:18px 20px 22px}
.cat{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2);margin-bottom:9px;display:flex;align-items:center;gap:8px}
.badge{padding:3px 9px;border-radius:999px;background:rgba(201,167,255,.16);color:var(--brand);font-size:10px;letter-spacing:.04em}
.name{font-size:17px;font-weight:600;letter-spacing:-.02em;margin-bottom:8px}
.price{font-size:19px;font-weight:650;margin-top:12px}
.price s{font-size:13px;color:var(--faint);font-weight:400;margin-left:6px}

/* ---------- product page ---------- */
.product-layout{display:grid;grid-template-columns:1fr 1fr;gap:44px;padding:118px 0 60px;align-items:start}
.product-image{border-radius:36px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.product-image img{width:100%;aspect-ratio:1;object-fit:cover}
.spec{display:grid;grid-template-columns:110px 1fr;gap:9px 16px;font-size:13.5px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:22px 0}
.spec span:nth-child(odd){color:var(--muted)}
.buy-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:24px 0 12px}
.buy-row .btn{flex:1;min-width:180px}

/* ---------- cart / checkout / orders ---------- */
.checkout-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;padding:118px 0 70px;align-items:start}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;backdrop-filter:blur(10px);
}
.summary{position:sticky;top:110px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:7px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
input,select,textarea{
  width:100%;padding:12px 15px;border-radius:14px;
  background:rgba(255,255,255,.055);color:var(--ink);
  border:1px solid var(--line);font:inherit;font-size:14px;
  outline:none;transition:border-color .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
input:focus,select:focus,textarea:focus{border-color:rgba(201,167,255,.65);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(201,167,255,.12)}
input::placeholder{color:var(--faint)}
select option{background:#14161a;color:var(--ink)}
input[type=checkbox]{width:auto;accent-color:var(--brand)}
.row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;font-size:13.5px}
.row.total{font-size:17px;padding-top:16px;margin-top:8px;border-top:1px solid var(--line)}
.line-item{display:grid;grid-template-columns:72px 1fr auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.line-item img{width:72px;height:72px;object-fit:cover;border-radius:16px}
.qty{display:inline-flex;align-items:center;gap:2px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:3px}
.qty button{
  width:28px;height:28px;border:0;border-radius:50%;background:transparent;color:var(--ink);
  font-size:16px;cursor:pointer;line-height:1;
}
.qty button:hover{background:var(--surface-3)}
.qty span{min-width:26px;text-align:center;font-size:13px}
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{text-align:left;color:var(--muted);font-weight:500;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;padding:10px 12px;border-bottom:1px solid var(--line)}
.table td{padding:12px;border-bottom:1px solid var(--line)}
.empty{padding:60px 20px;text-align:center;color:var(--muted);border:1px dashed var(--line-2);border-radius:var(--r)}

/* ---------- notices ---------- */
.notice{padding:15px 18px;border-radius:18px;font-size:13.5px;line-height:1.6;margin:14px 0;border:1px solid transparent}
.notice.info{background:rgba(138,216,255,.09);border-color:rgba(138,216,255,.22);color:#dcf2ff}
.notice.warn{background:rgba(255,212,121,.09);border-color:rgba(255,212,121,.24);color:#ffe9c0}
.notice.danger{background:rgba(255,146,146,.09);border-color:rgba(255,146,146,.26);color:#ffd9d9}
.notice.ok{background:rgba(126,224,168,.09);border-color:rgba(126,224,168,.24);color:#d2f8e2}
.notice a{text-decoration:underline}

/* ---------- policy pages ---------- */
.policy{padding:118px 0 80px;max-width:780px}
.policy h1{font-size:clamp(30px,4.4vw,46px);margin-bottom:12px}
.policy h2{font-size:21px;margin:34px 0 10px}
.policy p,.policy li{color:var(--muted);font-size:14.5px;line-height:1.8}
.policy ul{padding-left:20px;margin:10px 0 18px}
.policy a{text-decoration:underline;color:var(--brand-2)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:50px;padding:44px 0 30px;background:rgba(255,255,255,.015)}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px}
.logo{font-weight:700;font-size:19px;letter-spacing:.06em;display:inline-block}
.logo span{display:block;font-size:11px;letter-spacing:.02em;color:var(--muted);font-weight:400}
.footer-grid h4{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.footer-grid a{display:block;font-size:13px;color:var(--muted);padding:3px 0;transition:color .2s var(--ease)}
.footer-grid a:hover{color:var(--ink)}
.footer-bottom{border-top:1px solid var(--line);margin-top:32px;padding-top:18px;font-size:12px;color:var(--faint);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.age-note{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;color:var(--muted);margin-top:12px}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-grid,.product-layout,.checkout-layout{grid-template-columns:1fr;gap:28px}
  .hero{padding-top:116px}
  .hero-art{min-height:260px;order:-1}
  .hero-art img{width:min(260px,70%)}
  .grid{grid-template-columns:repeat(2,1fr)}
  .trust{grid-template-columns:repeat(2,1fr);gap:18px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .summary{position:static}
  .product-layout,.checkout-layout,.policy{padding-top:112px}
}
@media (max-width:560px){
  .wrap{width:min(100% - 28px,1120px)}
  .grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .ip-links{grid-template-columns:repeat(2,1fr)}
  .island.is-expanded{height:290px}
  .island-hint{display:none}
  .block{padding:44px 0}
  .hero{padding-top:108px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* ---------- island scroll state & quick-add (addendum) ---------- */
.island.is-scrolled{background:rgba(9,10,13,.94)}
.quick-add{
  position:absolute;top:14px;right:14px;z-index:3;
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
  background:rgba(10,10,12,.60);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  color:#fff;font-size:20px;font-weight:400;line-height:1;cursor:pointer;
  display:grid;place-items:center;
  opacity:0;transform:scale(.65);
  transition:opacity .3s var(--ease),transform .5s var(--spring),background .25s var(--ease);
}
.card:hover .quick-add{opacity:1;transform:none}
.quick-add:hover{background:linear-gradient(110deg,var(--brand),var(--brand-2));color:#0a0a0c;transform:scale(1.12)}
.quick-add:active{transform:scale(.92)}
@media (max-width:900px){.quick-add{opacity:1;transform:none}}

/* legacy semantic tokens still referenced by some pages */
:root{
  --danger-soft:rgba(255,146,146,.16);
  --warn-soft:rgba(255,212,121,.16);
  --ok-soft:rgba(126,224,168,.16);
}

/* ==========================================================
   i18n — floating language switcher + island language row
   ========================================================== */
#lang-switch{
  position:fixed;right:22px;bottom:22px;z-index:1200;
  font-family:inherit;
}
.lang-toggle{
  display:flex;align-items:center;gap:8px;
  padding:10px 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(9,10,13,.86);
  backdrop-filter:blur(22px) saturate(180%);
  -webkit-backdrop-filter:blur(22px) saturate(180%);
  color:#fff;font-size:12.5px;font-weight:650;letter-spacing:.06em;cursor:pointer;
  box-shadow:0 14px 40px rgba(0,0,0,.50),inset 0 1px 0 rgba(255,255,255,.10);
  transition:transform .4s var(--spring),background .25s var(--ease),box-shadow .3s var(--ease);
}
.lang-toggle:hover{transform:translateY(-3px);background:rgba(22,24,30,.94);box-shadow:0 18px 48px rgba(0,0,0,.62)}
.lang-toggle svg{opacity:.85}
.lang-chev{font-size:11px;opacity:.6;transition:transform .3s var(--ease)}
#lang-switch.is-open .lang-chev{transform:rotate(180deg)}
.lang-menu{
  position:absolute;right:0;bottom:calc(100% + 12px);width:214px;padding:10px;
  border-radius:20px;background:rgba(14,15,19,.96);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(26px) saturate(180%);
  -webkit-backdrop-filter:blur(26px) saturate(180%);
  box-shadow:0 22px 60px rgba(0,0,0,.65);
  opacity:0;transform:translateY(10px) scale(.96);pointer-events:none;
  transform-origin:bottom right;
  transition:opacity .28s var(--ease),transform .45s var(--spring);
}
#lang-switch.is-open .lang-menu{opacity:1;transform:none;pointer-events:auto}
.lang-menu-head{
  padding:6px 10px 10px;font-size:10.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--faint);
}
.lang-opt{
  display:flex;align-items:center;gap:10px;width:100%;
  padding:10px 12px;border:0;border-radius:14px;
  background:transparent;color:var(--ink);font-size:13px;
  cursor:pointer;text-align:left;font-family:inherit;
  transition:background .2s var(--ease);
}
.lang-opt:hover{background:rgba(255,255,255,.08)}
.lang-opt.is-active{background:linear-gradient(110deg,rgba(201,167,255,.20),rgba(138,216,255,.14))}
.lang-native{flex:1;font-weight:600}
.lang-code{font-size:10.5px;color:var(--faint);letter-spacing:.08em}
.lang-tick{color:var(--brand-2);opacity:0;font-weight:700}
.lang-opt.is-active .lang-tick{opacity:1}

/* 展开面板多一行语言选择 */
.island.is-expanded{height:302px}
.ip-langs{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}
.ip-lang-label{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
.ip-lang-btns{display:flex;gap:6px}
.ip-lang-btns button{
  min-width:38px;padding:6px 10px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--muted);
  font-size:11.5px;font-weight:650;cursor:pointer;font-family:inherit;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .35s var(--spring);
}
.ip-lang-btns button:hover{color:var(--ink);border-color:var(--line-2);transform:translateY(-2px)}
.ip-lang-btns button.is-active{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#0a0a0c;border-color:transparent;
}
#policy-lang-note{font-size:13px;line-height:1.7}
.ref{font-style:normal;font-weight:650;color:var(--ink)}
.provider{color:var(--ink);font-weight:600}

/* 中文字体与字距微调，避免负字距挤压汉字 */
html[lang="zh-CN"] body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Segoe UI",sans-serif;
  letter-spacing:0;
}
html[lang="zh-CN"] .island-brand,
html[lang="zh-CN"] .lang-toggle{letter-spacing:.02em}

@media (max-width:900px){
  #lang-switch{right:14px;bottom:14px}
  .island.is-expanded{height:342px}
  .lang-menu{width:196px}
}