/* ============================================================
   NOVATHERM — Heat Pump Export Site
   UI/UX Pro Max · Trust & Authority design system
   Palette: Navy #0F172A · Trust Blue #0369A1 · Sky #0EA5E9
   Type: Plus Jakarta Sans · Light-first, high contrast
   ============================================================ */

:root{
  /* Design-system tokens (UI/UX Pro Max → Trust & Authority) */
  --navy:#0F172A;          /* primary brand / dark surfaces */
  --navy-2:#1E293B;        /* navy gradient end */
  --bg:#F8FAFC;            /* page background */
  --surface:#FFFFFF;       /* cards */
  --surface-2:#F1F5F9;     /* alt section / subtle fills */
  --ink:#0F172A;           /* foreground text */
  --ink-soft:#475569;      /* muted text */
  --line:#E2E8F0;          /* borders */
  --brand:#0369A1;         /* trust-blue accent (CTA + key emphasis) */
  --brand-2:#0EA5E9;       /* sky — secondary highlight / links */
  --brand-cyan:#22D3EE;    /* minimal cyan spark only */
  --grad:linear-gradient(120deg,#0EA5E9 0%,#0369A1 100%);
  --shadow:0 18px 40px -22px rgba(15,23,42,.28);
  --shadow-lg:0 40px 80px -34px rgba(15,23,42,.45);
  --radius:16px;
  --radius-sm:12px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-weight:700;line-height:1.14;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* Accessibility: visible focus + skip link */
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:10px;z-index:200;background:var(--brand);color:#fff;
  padding:10px 18px;border-radius:10px;font-weight:600;font-size:.9rem}
.skip-link:focus{left:16px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:.25s var(--ease);
  font-family:inherit;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -12px rgba(3,105,161,.55)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(3,105,161,.7)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.28)}
.btn--ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.hero .btn--ghost{background:rgba(15,23,42,.05);color:var(--ink);border-color:var(--line)}
.hero .btn--ghost:hover{background:var(--brand);color:#fff;border-color:transparent;transform:translateY(-2px)}
.btn--block{width:100%}

/* ===== Nav ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s var(--ease);
  background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(14px);box-shadow:0 1px 0 var(--line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav.scrolled{background:rgba(255,255,255,.92)}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand);font-weight:700}
.brand__mark{color:var(--brand);display:grid;place-items:center}
.brand__name{font-size:1.15rem;letter-spacing:.04em}
.brand__name span{color:var(--brand-2)}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__links a{color:var(--ink-soft);font-weight:500;font-size:.95rem;transition:.2s}
.nav__links a:hover{color:var(--brand)}
.nav__cta{padding:9px 18px;border-radius:999px;background:var(--grad);border-color:transparent;color:#fff!important}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(160deg,#eef6ff 0%,#dbeafe 55%,#f8fafc 100%);color:var(--ink);padding:150px 0 90px;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg .grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(3,105,161,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(3,105,161,.06) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(80% 70% at 70% 20%,#000 30%,transparent 80%)}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.42;animation:float 14s ease-in-out infinite}
.blob--1{width:420px;height:420px;background:radial-gradient(circle,#0EA5E9,transparent 70%);top:-80px;right:6%}
.blob--2{width:360px;height:360px;background:radial-gradient(circle,#0369A1,transparent 70%);bottom:-60px;left:8%;animation-delay:-6s}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(28px) scale(1.06)}}
.orbits{position:absolute;top:18%;right:12%;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(3,105,161,.14);box-shadow:inset 0 0 60px rgba(14,165,233,.08);animation:spin 40s linear infinite}
.orbits::before{content:"";position:absolute;inset:40px;border-radius:50%;border:1px solid rgba(3,105,161,.1);
  border-top-color:rgba(14,165,233,.4);border-right-color:rgba(3,105,161,.3)}
@keyframes spin{to{transform:rotate(360deg)}}

.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--brand);background:rgba(3,105,161,.08);border:1px solid rgba(3,105,161,.2);padding:7px 14px;border-radius:999px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-cyan);box-shadow:0 0 12px var(--brand-cyan);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.4}}
.hero__title{font-size:clamp(2.2rem,4.6vw,3.7rem);font-weight:700;margin:22px 0 18px}
.hero__lead{color:var(--ink-soft);font-size:1.08rem;max-width:520px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 38px}
.hero__stats{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  border-top:1px solid var(--line);padding-top:26px;max-width:560px}
.hero__stats strong{display:block;font-size:1.9rem;font-weight:800;color:var(--ink)}
.hero__stats span{font-size:.8rem;color:var(--ink-soft)}

/* Hero visual device */
.hero__visual{display:grid;place-items:center}
.device{width:300px;background:linear-gradient(160deg,#16203f,#0c142b);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:22px;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.device::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 40%,rgba(34,211,238,.12) 50%,transparent 60%);transform:translateX(-100%);animation:sheen 6s ease-in-out infinite}
@keyframes sheen{0%,60%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.device__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.device__brand{font-weight:700;font-size:.95rem;color:#fff;letter-spacing:.05em}
.device__model{font-size:.7rem;color:var(--brand-2)}
.led{width:9px;height:9px;border-radius:50%;background:var(--brand-cyan);box-shadow:0 0 10px var(--brand-cyan);animation:pulse 1.6s infinite}
.device__grille{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:18px}
.device__grille span{height:46px;border-radius:6px;background:linear-gradient(180deg,#1d2a4d,#0e1730);border:1px solid rgba(255,255,255,.05)}
.device__readout{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.readout{background:rgba(34,211,238,.06);border:1px solid rgba(34,211,238,.18);border-radius:10px;padding:10px;text-align:center}
.readout__k{display:block;font-size:.62rem;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.06em}
.readout__v{font-weight:700;font-size:1.05rem;color:#fff}
.device__wave{display:flex;align-items:flex-end;gap:5px;height:34px}
.device__wave i{flex:1;background:var(--grad);border-radius:3px;animation:eq 1.1s ease-in-out infinite;opacity:.85}
.device__wave i:nth-child(1){height:40%}
.device__wave i:nth-child(2){height:75%;animation-delay:.15s}
.device__wave i:nth-child(3){height:55%;animation-delay:.3s}
.device__wave i:nth-child(4){height:90%;animation-delay:.45s}
.device__wave i:nth-child(5){height:50%;animation-delay:.6s}
.device__wave i:nth-child(6){height:70%;animation-delay:.75s}
.device__wave i:nth-child(7){height:35%;animation-delay:.9s}
@keyframes eq{50%{height:20%}}

.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:26px;height:42px;
  border:2px solid rgba(255,255,255,.3);border-radius:14px;display:grid;justify-items:center;padding-top:8px;z-index:1}
.scroll-cue span{width:4px;height:8px;border-radius:2px;background:#fff;animation:scrolldot 1.8s infinite}
@keyframes scrolldot{0%{opacity:0;transform:translateY(-4px)}50%{opacity:1}100%{opacity:0;transform:translateY(10px)}}

/* ===== Trust bar ===== */
.trust{background:var(--surface);border-bottom:1px solid var(--line)}
.trust__row{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:22px 24px}
.trust__label{font-size:.82rem;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em}
.trust__logos{list-style:none;display:flex;flex-wrap:wrap;gap:14px;margin-left:auto}
.trust__logos li{font-weight:700;font-size:.95rem;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);padding:8px 16px;border-radius:10px;letter-spacing:.03em}

/* ===== Sections ===== */
.section{padding:96px 0}
.section--alt{background:var(--surface-2)}
.section__head{max-width:680px;margin:0 auto 54px;text-align:center}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.kicker--light{color:var(--brand-2)}
.section__title{font-size:clamp(1.7rem,3vw,2.5rem)}
.section__title--light{color:#fff}
.section__sub{color:var(--ink-soft);margin-top:14px;font-size:1.02rem}
.section__sub--light{color:rgba(255,255,255,.78)}

/* ===== Product cards ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:.3s var(--ease);position:relative;overflow:hidden;display:flex;flex-direction:column}
.card__img{width:100%;height:180px;object-fit:cover;border-radius:12px;margin-bottom:18px;
  background:linear-gradient(135deg,#e2e8f0,#f1f5f9);display:block}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.35s var(--ease)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card__icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:rgba(3,105,161,.1);color:var(--brand);border:1px solid rgba(3,105,161,.18);margin-bottom:18px}
.card h3{font-size:1.18rem;margin-bottom:10px}
.card p{color:var(--ink-soft);font-size:.95rem;margin-bottom:18px}
.card__specs{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.card__specs li{font-size:.78rem;font-weight:600;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);padding:5px 11px;border-radius:999px}
.card__link{font-size:.9rem;font-weight:600;color:var(--brand);transition:.2s;border-bottom:1px solid transparent}
.card__link:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}

/* ===== Features ===== */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.3s var(--ease)}
.feature:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.feature__no{font-weight:800;font-size:.9rem;color:var(--brand);letter-spacing:.1em}
.feature h3{font-size:1.15rem;margin:14px 0 10px}
.feature p{color:var(--ink-soft);font-size:.95rem}

/* ===== Applications ===== */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.app{background:linear-gradient(160deg,#1E293B,var(--navy));color:#fff;border-radius:var(--radius);padding:30px 24px;position:relative;overflow:hidden;transition:.3s var(--ease)}
.app::after{content:"";position:absolute;right:-30px;bottom:-30px;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.22),transparent 70%)}
.app:hover{transform:translateY(-5px)}
.app h3{font-size:1.25rem;margin-bottom:6px}
.app p{color:rgba(255,255,255,.65);font-size:.9rem}
.app__tag{display:inline-block;margin-top:16px;font-size:.76rem;font-weight:600;color:var(--brand-2);
  background:rgba(14,165,233,.12);border:1px solid rgba(125,211,252,.25);padding:5px 12px;border-radius:999px}

/* ===== Certifications ===== */
.certs{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.certs__actions{margin-top:24px}
.certs__grid{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.certs__grid li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 14px;text-align:center;transition:.25s var(--ease)}
.certs__grid li:hover{border-color:var(--brand);box-shadow:0 10px 24px -14px rgba(3,105,161,.5);transform:translateY(-3px)}
.certs__grid strong{display:block;font-weight:800;font-size:1.05rem;color:var(--ink)}
.certs__grid span{font-size:.74rem;color:var(--ink-soft)}

/* ===== About ===== */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:54px;align-items:center}
.about__copy p{color:var(--ink-soft);margin-top:16px}
.about__points{list-style:none;display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.about__points li{font-size:.88rem;font-weight:600;background:var(--surface-2);border:1px solid var(--line);padding:9px 16px;border-radius:999px}
.about__map{display:grid;place-items:center;gap:14px}
.globe{position:relative;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#1E293B,var(--navy) 70%);
  border:1px solid rgba(34,211,238,.25);box-shadow:inset 0 0 60px rgba(14,165,233,.2),var(--shadow)}
.globe .ring{position:absolute;inset:0;border-radius:50%;border:1px solid rgba(34,211,238,.2)}
.globe .ring:nth-child(1){transform:rotateX(70deg)}
.globe .ring:nth-child(2){transform:rotateY(70deg)}
.globe .ring:nth-child(3){transform:rotateX(20deg) rotateY(40deg)}
.globe .pin{position:absolute;left:var(--x);top:var(--y);width:11px;height:11px;border-radius:50%;
  background:var(--brand-cyan);box-shadow:0 0 0 4px rgba(34,211,238,.2),0 0 14px var(--brand-cyan);animation:ping 2.4s infinite}
@keyframes ping{0%,100%{box-shadow:0 0 0 4px rgba(34,211,238,.2),0 0 14px var(--brand-cyan)}50%{box-shadow:0 0 0 9px rgba(34,211,238,0),0 0 14px var(--brand-cyan)}}
.about__mapcap{font-size:.85rem;color:var(--ink-soft);font-weight:600}

/* ===== Contact ===== */
.section--contact{background:radial-gradient(120% 130% at 20% 0%,#1E293B 0%,var(--navy) 60%);color:#fff}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}
.contact__info{list-style:none;margin-top:28px;display:grid;gap:16px}
.contact__info li{display:flex;flex-direction:column;gap:2px;font-size:.95rem}
.contact__info span{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.5)}
.contact__info a{color:var(--brand-2);font-weight:600}
.contact__form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:28px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field--full{grid-column:1/-1}
.contact__form .field{margin-bottom:14px}
.field label{font-size:.82rem;font-weight:600;color:rgba(255,255,255,.82)}
.field input,.field select,.field textarea{font-family:inherit;font-size:.95rem;color:#fff;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:12px 14px;transition:.2s;width:100%}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.4)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(34,211,238,.22);background:rgba(255,255,255,.09)}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2399a' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field select option{color:#0c1322}
.form__note{margin-top:12px;font-size:.88rem;min-height:1.2em;color:var(--brand-2)}
.form__note.ok{color:#4ade80}
.form__note.err{color:#fb7185}

/* ===== Clients & Cases ===== */
.clients__logos{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:6px}
.clients__logos li{font-weight:700;font-size:1.05rem;color:var(--ink-soft);background:var(--surface);border:1px solid var(--line);padding:14px 26px;border-radius:14px;letter-spacing:.02em;transition:.25s var(--ease)}
.clients__logos li:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.cases__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.case{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.3s var(--ease)}
.case:hover{box-shadow:var(--shadow);transform:translateY(-5px);border-color:transparent}
.case__region{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);background:rgba(3,105,161,.08);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.case__metric{display:block;font-size:1.5rem;font-weight:800;color:var(--ink);margin-bottom:8px;line-height:1.15}
.case__title{font-size:1.12rem;margin-bottom:8px}
.case__desc{color:var(--ink-soft);font-size:.92rem}

/* ===== Footer ===== */
.footer{background:var(--navy);color:#fff;padding:64px 0 28px}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer__brand .brand__name{font-size:1.25rem}
.footer__brand p{color:rgba(255,255,255,.55);font-size:.9rem;margin-top:12px;max-width:260px}
.footer__col h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.55);margin-bottom:14px}
.footer__col a{display:block;color:rgba(255,255,255,.78);font-size:.92rem;padding:5px 0;transition:.2s}
.footer__col a:hover{color:var(--brand-2)}
.footer__bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;color:rgba(255,255,255,.45);font-size:.82rem}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(26px);transition:.7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:980px){
  .hero__inner{grid-template-columns:1fr;gap:40px}
  .hero__visual{order:-1}
  .cards,.features,.cases__grid{grid-template-columns:repeat(2,1fr)}
  .apps{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:1fr;gap:32px}
  .about{grid-template-columns:1fr;gap:36px}
  .contact{grid-template-columns:1fr;gap:36px}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .nav__links{position:fixed;top:72px;right:0;left:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.97);backdrop-filter:blur(14px);padding:12px 24px 24px;
    box-shadow:var(--shadow);transform:translateY(-130%);transition:.35s var(--ease);height:calc(100vh - 72px)}
  .nav__links.open{transform:translateY(0)}
  .nav__links a{color:var(--ink)!important;padding:14px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav__cta{margin-top:14px;text-align:center;background:var(--grad)!important;color:#fff!important;border:0}
  .nav__toggle{display:flex}
  .cards,.features,.apps,.certs__grid,.cases__grid{grid-template-columns:1fr}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:22px}
  .section{padding:68px 0}
  .footer__inner{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ===== Language switcher ===== */
.nav__cluster{display:flex;align-items:center;gap:22px}
.lang{position:relative}
.lang__btn{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);color:#fff;font-family:inherit;font-weight:600;font-size:.85rem;
  padding:8px 12px;border-radius:999px;cursor:pointer;transition:.2s;min-height:40px}
.nav.scrolled .lang__btn{background:var(--surface-2);border-color:var(--line);color:var(--ink)}
.lang__btn:hover{background:rgba(255,255,255,.16)}
.nav.scrolled .lang__btn:hover{background:#e2e8f0}
.lang__caret{transition:.25s var(--ease)}
.lang.open .lang__caret{transform:rotate(180deg)}
.lang__menu{position:absolute;top:calc(100% + 10px);right:0;min-width:150px;list-style:none;
  background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:6px;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s var(--ease);z-index:120}
.lang.open .lang__menu{opacity:1;visibility:visible;transform:none}
.lang__menu li{padding:10px 14px;border-radius:10px;font-weight:600;font-size:.9rem;cursor:pointer;transition:.15s;white-space:nowrap}
.lang__menu li:hover{background:var(--surface-2)}
.lang__menu li.active{color:var(--brand);background:rgba(3,105,161,.08)}

@media (max-width:680px){
  .nav__cluster{gap:14px}
  .lang__menu{right:0}
}