:root{
  --brand:#0d7c6e;
  --brand-dark:#0a554c;
  --brand-grad:linear-gradient(135deg,#0d7c6e 0%,#0a554c 100%);
  --brand-soft:#e6f4f1;
  --brand-soft-2:#d2eae5;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --surface-3:#f4faf8;
  --page-wash:linear-gradient(180deg,#f4faf8 0%,#ffffff 35%,#f5f7fa 100%);
  --border:#e2e8f0;
  --border-soft:#eef2f5;
  --text:#101a18;
  --text-2:#3f4e4b;
  --text-muted:#6b7c79;
  --danger:#dc2626;
  --warn:#d97706;
  --ok:#16a34a;
  --shadow-card:0 1px 2px rgba(13,124,110,.04),0 4px 14px rgba(13,124,110,.06);
  --shadow-card-hover:0 4px 8px rgba(13,124,110,.06),0 12px 28px rgba(13,124,110,.10);
  --shadow-brand:0 6px 18px rgba(13,124,110,.28);
  --shadow-brand-strong:0 12px 32px rgba(13,124,110,.32);
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:20px;--r-2xl:24px;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--page-wash);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .15s ease}
a:hover{color:var(--brand-dark)}
img,svg{display:block;max-width:100%}
::selection{background:rgba(13,124,110,.18);color:var(--brand-dark)}

/* === Header === */
.app-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid rgba(13,124,110,.08);
}
.app-header-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:17px;letter-spacing:-.01em}
.brand-logo{width:32px;height:32px;border-radius:7px;flex:0 0 32px}
.nav{display:flex;align-items:center;gap:6px}
.nav a{
  color:var(--text-2);font-weight:600;font-size:14px;
  padding:8px 12px;border-radius:8px;
  transition:background .15s ease,color .15s ease;
}
.nav a:hover{background:rgba(13,124,110,.06);color:var(--brand-dark)}
.nav a.active{color:var(--brand-dark)}
.nav-cta{display:flex;align-items:center;gap:10px;flex-wrap:nowrap}
/* Auth-aware nav: a round avatar button swaps in for the "Sign in" CTA when
   /api/v1/auth/me returns 200 (see i18n.js Phase 3). */
.nav-avatar{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  border:1px solid var(--border);text-decoration:none;
  overflow:hidden;flex:0 0 36px;
  transition:border-color .15s ease,transform .15s ease,box-shadow .2s ease;
}
.nav-avatar:hover{
  border-color:var(--brand);transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(13,124,110,.22);
}
.nav-avatar img{width:100%;height:100%;object-fit:cover;display:block}
.nav-avatar-initial{font:700 14px/1 inherit;color:var(--brand-dark);letter-spacing:-.01em}
@media(max-width:760px){.nav{display:none}}
@media(max-width:560px){
  .app-header-inner{padding:12px 16px;gap:10px}
  .nav-cta{gap:8px}
  .nav-cta .btn.ghost{display:none}
  .brand{font-size:16px}
  .brand-logo{width:28px;height:28px;flex:0 0 28px}
}

/* === Buttons === */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;font:600 14.5px/1 inherit;
  border-radius:var(--r-md);border:0;cursor:pointer;
  background:var(--brand-grad);color:#fff;
  text-decoration:none;
  transition:transform .15s ease,box-shadow .2s ease;
  box-shadow:0 1px 2px rgba(13,124,110,.18);
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-brand);color:#fff}
.btn:active{transform:translateY(0)}
.btn.lg{padding:16px 34px;font-size:16px;font-weight:700;border-radius:14px;letter-spacing:.005em}
.btn.lg:hover{box-shadow:var(--shadow-brand-strong)}
.btn .btn-icon{width:16px;height:16px;flex:0 0 16px;display:inline-block}
.btn.lg .btn-icon{width:20px;height:20px;flex:0 0 20px}
.btn.secondary{
  background:#fff;color:var(--text);
  border:1px solid var(--border);box-shadow:0 1px 2px rgba(0,0,0,.02);
}
.btn.secondary:hover{background:var(--surface-2);border-color:#cfd9dd;color:var(--text);box-shadow:0 4px 12px rgba(0,0,0,.04)}
.btn.ghost{background:transparent;color:var(--text-2);box-shadow:none}
.btn.ghost:hover{background:rgba(13,124,110,.06);color:var(--brand-dark)}
.btn-icon{width:18px;height:18px;flex:0 0 18px}

/* === Layout === */
.shell{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:72px 0}
@media(max-width:760px){section{padding:48px 0}}
.section-title{
  font-size:32px;font-weight:700;letter-spacing:-.02em;line-height:1.2;
  margin:0 0 12px;text-align:center;
}
.section-sub{
  max-width:620px;margin:0 auto 48px;text-align:center;
  color:var(--text-muted);font-size:16px;
}
.eyebrow{
  display:inline-block;
  font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);
}

/* === Hero === */
.hero{padding:80px 0 64px;text-align:center}
.hero .eyebrow{margin-bottom:20px}
.hero h1{
  font-size:60px;font-weight:800;line-height:1.05;letter-spacing:-.03em;
  margin:0 0 18px;
  background:var(--brand-grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero .lead{
  max-width:680px;margin:0 auto 32px;
  font-size:18px;line-height:1.55;color:var(--text-2);
}
.hero .cta-row{
  display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:18px;
}
@media(max-width:760px){
  .hero{padding:48px 0 32px}
  .hero h1{font-size:38px}
  .hero .lead{font-size:16px}
}
.platforms-eyebrow{
  font-size:15px;font-weight:600;letter-spacing:.005em;
  color:var(--text-2);margin:0 auto 28px;text-align:center;
  text-transform:none;
}
.platforms{
  display:grid;
  grid-template-columns:repeat(6,auto);
  justify-content:center;
  gap:28px 24px;
  margin:0 auto;
}
.platform-chip{
  width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:0;border-radius:50%;
  box-shadow:0 1px 2px rgba(15,23,42,.04),0 4px 14px rgba(15,23,42,.08);
  transition:transform .2s ease,box-shadow .25s ease;
  position:relative;
}
.platform-chip:hover{
  transform:translateY(-3px);
  box-shadow:0 4px 10px rgba(15,23,42,.05),0 14px 28px rgba(15,23,42,.12);
}
.platform-chip svg,.platform-chip img{width:30px;height:30px;display:block}
.platform-chip::after{
  content:attr(data-name);
  position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);
  font-size:11.5px;color:var(--text-muted);font-weight:600;
  white-space:nowrap;opacity:0;transition:opacity .15s ease;
  pointer-events:none;
}
.platform-chip:hover::after{opacity:1}
@media(max-width:560px){
  .platforms{grid-template-columns:repeat(4,auto);gap:18px 14px}
  .platform-chip{width:56px;height:56px}
  .platform-chip svg,.platform-chip img{width:26px;height:26px}
}

/* Per-site brand colors — applied via currentColor on the SVG */
.chip-chatgpt{color:#10a37f}
.chip-claude{color:#c96442}
.chip-gemini{color:#4285f4}
.chip-aistudio{color:#1a73e8}
.chip-deepseek{color:#4D6BFE}
.chip-grok{color:#18181b}
.chip-copilot{color:#0078d4}
.chip-notebooklm{color:#1a73e8}
.chip-perplexity{color:#20808d}
.chip-kimi{color:#181818}
.chip-yuanbao{color:#d97706}
.chip-github{color:#24292e}

/* === Hero trust line + cta note === */
.cta-note{
  text-align:center;font-size:13.5px;color:var(--text-muted);
  margin:0 0 18px;
}
.trust-line{
  text-align:center;
  font-size:13.5px;color:var(--text-2);font-weight:500;
  margin:0 auto 44px;
  max-width:720px;
  line-height:1.8;
}
.trust-line > span{
  display:inline-block;
  margin:0 12px;
  white-space:nowrap;
}
.trust-line svg{
  display:inline-block;
  width:14px;height:14px;
  vertical-align:-2px;
  margin-right:5px;
  color:var(--brand);
}

/* === Feature grid === */
.feature-grid{
  display:grid;gap:20px;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}
.feature-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  padding:28px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .25s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.feature-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:
    linear-gradient(135deg,rgba(13,124,110,.12),rgba(10,85,76,.06));
  color:var(--brand);
  box-shadow:
    inset 0 0 0 1px rgba(13,124,110,.10),
    0 1px 2px rgba(13,124,110,.05),
    0 4px 10px rgba(13,124,110,.04);
  margin-bottom:18px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-card:hover .feature-icon{
  transform:scale(1.05) rotate(-2deg);
  box-shadow:
    inset 0 0 0 1px rgba(13,124,110,.16),
    0 2px 4px rgba(13,124,110,.08),
    0 8px 18px rgba(13,124,110,.10);
}
.feature-icon svg{width:24px;height:24px}
.feature-card h3{font-size:17px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em}
.feature-card p{margin:0;color:var(--text-2);font-size:14.5px;line-height:1.6}

/* === Pricing === */
.pricing-grid{
  display:grid;gap:20px;max-width:880px;margin:0 auto;
  grid-template-columns:1fr;
}
@media(min-width:720px){.pricing-grid{grid-template-columns:1fr 1fr}}
.plan-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-2xl);
  padding:32px 28px;
  box-shadow:var(--shadow-card);
}
.plan-card.popular{
  border:2px solid transparent;
  background:
    linear-gradient(#fff,#fff) padding-box,
    var(--brand-grad) border-box;
  box-shadow:0 6px 18px rgba(13,124,110,.14);
}
.popular-ribbon{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--brand-grad);color:#fff;
  font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  box-shadow:0 4px 12px rgba(13,124,110,.32);
}
.plan-name{font-size:18px;font-weight:700;margin:0 0 4px}
.plan-desc{color:var(--text-muted);font-size:14px;margin:0 0 20px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-bottom:20px}
.plan-price .amount{font-size:42px;font-weight:800;letter-spacing:-.02em}
.plan-price .unit{color:var(--text-muted);font-size:14.5px}
.plan-features{list-style:none;padding:0;margin:0 0 24px}
.plan-features li{
  display:flex;align-items:flex-start;gap:10px;
  padding:8px 0;font-size:14.5px;color:var(--text-2);
}
.plan-features li::before{
  content:"";flex:0 0 18px;width:18px;height:18px;border-radius:50%;
  background:var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230d7c6e'%3E%3Cpath d='M13.78 4.22a.75.75 0 0 1 0 1.06l-7 7a.75.75 0 0 1-1.06 0l-3-3a.75.75 0 1 1 1.06-1.06L6.25 10.69l6.47-6.47a.75.75 0 0 1 1.06 0z'/%3E%3C/svg%3E") center/12px no-repeat;
  margin-top:2px;
}
.plan-card .btn{width:100%}

/* === FAQ === */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-item[open]{border-color:rgba(13,124,110,.25);box-shadow:0 1px 2px rgba(13,124,110,.05),0 6px 18px rgba(13,124,110,.08)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-weight:600;font-size:15.5px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  transition:color .15s ease;
}
.faq-item[open] summary{color:var(--brand-dark)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 18px;width:18px;height:18px;
  background-color:var(--text-muted);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.22 5.97a.75.75 0 0 1 1.06 0L8 9.69l3.72-3.72a.75.75 0 1 1 1.06 1.06l-4.25 4.25a.75.75 0 0 1-1.06 0L3.22 7.03a.75.75 0 0 1 0-1.06z'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.22 5.97a.75.75 0 0 1 1.06 0L8 9.69l3.72-3.72a.75.75 0 1 1 1.06 1.06l-4.25 4.25a.75.75 0 0 1-1.06 0L3.22 7.03a.75.75 0 0 1 0-1.06z'/%3E%3C/svg%3E") center/contain no-repeat;
  transition:transform .25s cubic-bezier(.4,0,.2,1),background-color .2s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg);background-color:var(--brand)}
.faq-item .answer{padding:0 22px 20px;color:var(--text-2);font-size:14.5px;line-height:1.65}
.faq-item[open] .answer{animation:faqAnswerIn .25s ease-out}
@keyframes faqAnswerIn{
  from{opacity:0;transform:translateY(-4px)}
  to{opacity:1;transform:translateY(0)}
}

/* === Footer === */
.footer{
  background:var(--surface);
  border-top:1px solid var(--border-soft);
  padding:56px 0 32px;margin-top:48px;
}
.footer-grid{
  display:grid;gap:32px;
  grid-template-columns:2fr repeat(3,1fr);
  margin-bottom:36px;
}
@media(max-width:960px){
  .footer-grid{grid-template-columns:repeat(3,1fr);gap:28px 24px}
  .footer-grid > :first-child{grid-column:1/-1;max-width:520px}
}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-grid > :first-child{grid-column:1/-1}
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-weight:700;font-size:17px;color:var(--text)}
.footer-tag{color:var(--text-muted);font-size:14px;max-width:300px;line-height:1.55}
.footer h4{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin:0 0 14px}
.footer ul{list-style:none;padding:0;margin:0}
.footer ul li{margin-bottom:8px}
.footer ul a{color:var(--text-2);font-size:14px}
.footer ul a:hover{color:var(--brand-dark)}
.footer-bottom{
  border-top:1px solid var(--border-soft);
  padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  color:var(--text-muted);font-size:13px;
}

/* === Utility === */
.text-grad{
  background:var(--brand-grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hr-sep{border:0;border-top:1px solid var(--border-soft);margin:32px 0}
.center{text-align:center}
.muted{color:var(--text-muted)}

/* === Generic page hero (sub-pages) === */
.page-hero{padding:64px 0 32px;text-align:center}
.page-hero h1{
  font-size:44px;font-weight:800;letter-spacing:-.02em;line-height:1.15;
  margin:14px 0 14px;
}
.page-hero .lead{max-width:620px;margin:0 auto;color:var(--text-muted);font-size:16.5px;line-height:1.55}
@media(max-width:760px){.page-hero h1{font-size:32px}}

/* === Doc-style === */
.prose{max-width:780px;margin:0 auto}
.prose h2{font-size:24px;font-weight:700;letter-spacing:-.01em;margin:40px 0 14px}
.prose h3{font-size:18px;font-weight:700;margin:28px 0 10px}
.prose p{color:var(--text-2);margin:0 0 14px;font-size:15.5px;line-height:1.7}
.prose ul,.prose ol{color:var(--text-2);padding-left:22px;line-height:1.75}
.prose ul li,.prose ol li{margin-bottom:6px}
.prose code{background:var(--surface-2);border:1px solid var(--border-soft);padding:2px 7px;border-radius:6px;font-size:13.5px}
.prose .callout{
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  padding:14px 18px;border-radius:8px;margin:18px 0;
  color:var(--text-2);font-size:14.5px;
}
.prose a{font-weight:600}
.prose a:hover{text-decoration:underline}

/* === Pricing comparison table === */
.compare{
  width:100%;max-width:880px;margin:48px auto 0;
  border-collapse:separate;border-spacing:0;
  border:1px solid var(--border);border-radius:var(--r-xl);
  overflow:hidden;background:var(--surface);
  box-shadow:var(--shadow-card);
}
.compare th,.compare td{padding:14px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border-soft)}
.compare th{background:var(--surface-2);font-weight:700;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted)}
.compare tr:last-child td{border-bottom:0}
.compare td.center{text-align:center;font-weight:600}
.compare .yes{color:var(--brand-dark)}
.compare .no{color:var(--text-muted)}

/* === Result modal (form submit success/error popup) ===
 * Overlay = fixed semi-transparent backdrop (no flex centering — see below).
 * Dialog  = its own fixed element, centered via translate trick. This avoids
 * the rare case where an ancestor with `transform`/`filter`/`backdrop-filter`
 * turns into the containing block for `position: fixed`, which would land the
 * dialog far below the viewport. !important on positioning hardens against
 * any global selector that touches z-index/position. */
.result-modal-overlay{
  position:fixed !important;
  top:0 !important; left:0 !important;
  width:100vw !important; height:100vh !important;
  margin:0; box-sizing:border-box;
  z-index:9999;
  background:rgba(15,30,28,.55);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
  opacity:0; pointer-events:none;
  transition:opacity .18s ease;
}
.result-modal-overlay.open{opacity:1;pointer-events:auto}
.result-modal{
  position:fixed !important;
  top:50% !important; left:50% !important;
  transform:translate(-50%, -50%) scale(.94);
  z-index:10000;
  max-width:420px;
  width:calc(100% - 40px);
  box-sizing:border-box;
  background:#fff;border-radius:18px;
  padding:32px 28px 24px;text-align:center;
  box-shadow:0 24px 60px rgba(0,0,0,.22),0 4px 14px rgba(0,0,0,.08);
  opacity:0; pointer-events:none;
  transition:transform .2s cubic-bezier(.16,1,.3,1), opacity .18s ease;
}
.result-modal-overlay.open ~ .result-modal,
.result-modal-overlay.open + .result-modal,
.result-modal-overlay.open .result-modal,
.result-modal.open{
  transform:translate(-50%, -50%) scale(1);
  opacity:1;
  pointer-events:auto;
}
.result-modal-icon{
  width:64px;height:64px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.result-modal-icon.ok{background:rgba(13,124,110,.12);color:var(--brand-dark)}
.result-modal-icon.err{background:rgba(220,38,38,.12);color:var(--danger)}
.result-modal-icon svg{width:34px;height:34px}
.result-modal h3{font-size:19px;margin:0 0 8px;font-weight:700;letter-spacing:-.01em}
.result-modal p{font-size:14.5px;color:var(--text-2);line-height:1.55;margin:0 0 22px;white-space:pre-wrap;word-break:break-word}
.result-modal-actions{display:flex;justify-content:center;gap:10px}
.result-modal-actions .btn{padding:10px 24px;font-size:14.5px}

/* === i18n: lang attribute drives content visibility ===
   Active <html lang> wins; every other lang-tagged element in body is hidden.
   Scales to any number of languages (en, zh, zh_TW, ja, ko, de). */
html[lang="en"]    body [lang]:not([lang="en"]),
html[lang="zh"]    body [lang]:not([lang="zh"]),
html[lang="zh_TW"] body [lang]:not([lang="zh_TW"]),
html[lang="ja"]    body [lang]:not([lang="ja"]),
html[lang="ko"]    body [lang]:not([lang="ko"]),
html[lang="de"]    body [lang]:not([lang="de"]),
html[lang="ru"]    body [lang]:not([lang="ru"]){display:none!important}

/* === Language picker (globe icon + dropdown) === */
.lang-picker{position:relative;display:inline-flex}
.lang-switch{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;padding:0;
  background:transparent;border:1px solid var(--border);
  border-radius:999px;color:var(--text-2);
  cursor:pointer;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.lang-switch:hover,.lang-switch[aria-expanded="true"]{
  background:rgba(13,124,110,.08);color:var(--brand-dark);
  border-color:rgba(13,124,110,.25);
}
.lang-switch .lang-icon{width:18px;height:18px;display:block}

.lang-menu{
  position:absolute;top:calc(100% + 8px);right:0;
  min-width:160px;
  background:#fff;border:1px solid var(--border);
  border-radius:var(--r-md);
  box-shadow:0 4px 8px rgba(13,124,110,.06),0 12px 28px rgba(13,124,110,.10);
  padding:6px;z-index:100;
  opacity:0;transform:translateY(-4px);pointer-events:none;
  transition:opacity .15s ease,transform .15s ease;
}
.lang-menu.open{opacity:1;transform:translateY(0);pointer-events:auto}

.lang-menu-item{
  display:flex;align-items:center;gap:10px;
  width:100%;padding:8px 12px;
  background:transparent;border:0;cursor:pointer;
  font:600 13.5px/1.2 inherit;color:var(--text-2);
  text-align:left;border-radius:8px;
  transition:background .15s ease,color .15s ease;
}
.lang-menu-item:hover{background:var(--surface-2);color:var(--text)}
.lang-menu-item.active{color:var(--brand-dark);background:var(--brand-soft)}
.lang-flag{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:6px;
  background:var(--surface-2);color:var(--text-muted);
  font-size:10.5px;font-weight:700;letter-spacing:.04em;
  flex:0 0 22px;
}
.lang-menu-item.active .lang-flag{background:var(--brand-grad);color:#fff}
.lang-check{
  margin-left:auto;width:14px;height:14px;display:inline-flex;
  color:var(--brand);opacity:0;transition:opacity .15s ease;
}
.lang-check svg{width:100%;height:100%}
.lang-menu-item.active .lang-check{opacity:1}