:root{
  --bg:#f4f3ee;
  --paper:#ffffff;
  --ink:#0b0b0b;
  --muted:#6c6a64;
  --line:rgba(0,0,0,.12);
  --soft:rgba(0,0,0,.045);
  --dark:#0d0d0d;
  --dark2:#1a1a1a;
  --accent:#000;
  --radius:26px;
  --shadow:0 24px 80px rgba(0,0,0,.12);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: Inter, Arial, Helvetica, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg);color:var(--ink)}
body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.4;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.skip-link{position:absolute;left:12px;top:-60px;background:#fff;color:#000;padding:10px 14px;border-radius:999px;z-index:50;box-shadow:var(--shadow)}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(255,255,255,.12);background:rgba(13,13,13,.86);color:#fff;backdrop-filter:blur(18px)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:76px;padding:0 28px;max-width:1480px;margin:0 auto}
.brand{display:flex;align-items:center;gap:13px;min-width:390px}
.brand-logo{width:42px;height:42px;border-radius:14px;background:#fff;padding:6px;box-shadow:0 0 0 1px rgba(255,255,255,.4)}
.brand-text strong{display:block;letter-spacing:.06em;font-weight:900;font-size:13px}
.brand-text span{display:block;color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.12em;text-transform:uppercase;margin-top:2px}
.header-nav{display:flex;gap:18px;margin-left:auto;align-items:center}
.header-nav a{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.72)}
.header-nav a:hover{color:#fff}
.header-main-site{font-size:12px;letter-spacing:.1em;text-transform:uppercase;display:inline-flex;align-items:center;justify-content:center;padding:9px 12px;border-radius:999px;background:#fff;color:#000;font-weight:900;white-space:nowrap;border:1px solid rgba(255,255,255,.35)}
.header-main-site:hover{background:rgba(255,255,255,.86);color:#000}
.header-status{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.62);padding:8px 10px;border:1px solid rgba(255,255,255,.16);border-radius:999px}
.hero{position:relative;min-height:calc(100svh - 76px);background:#0d0d0d;color:#fff;overflow:hidden;padding:72px 28px 52px;border-bottom:1px solid rgba(255,255,255,.08)}
.hero-grid{position:absolute;inset:0;background:linear-gradient(transparent 0 95%,rgba(255,255,255,.07) 95% 100%),linear-gradient(90deg,transparent 0 95%,rgba(255,255,255,.07) 95% 100%);background-size:56px 56px;opacity:.32;mask-image:radial-gradient(circle at 70% 40%, #000 0, transparent 72%)}
.hero::before{content:"";position:absolute;right:-160px;top:-220px;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.15),transparent 62%);filter:blur(10px)}
.hero-inner{position:relative;z-index:1;max-width:1480px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.04fr) minmax(360px,.72fr);gap:48px;align-items:center}
.kicker{display:inline-flex;gap:10px;align-items:center;padding:9px 12px;border:1px solid rgba(255,255,255,.18);border-radius:999px;color:rgba(255,255,255,.76);font-size:12px;letter-spacing:.12em;text-transform:uppercase;background:rgba(255,255,255,.04)}
.kicker::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 8px rgba(255,255,255,.09)}
h1{font-size:clamp(48px,8vw,122px);line-height:.88;margin:26px 0 22px;letter-spacing:-.075em;text-transform:none;max-width:1050px}
.hero-title-main{display:block;font-weight:950;line-height:.88}.hero-title-small{display:block;font-size:.34em;letter-spacing:-.03em;line-height:1.05;margin-top:16px;color:rgba(255,255,255,.82);text-transform:none}.hero-title-en{display:block;font-size:.19em;letter-spacing:.08em;line-height:1.3;margin-top:18px;color:rgba(255,255,255,.58);text-transform:uppercase}
.hero p.lead{max-width:760px;font-size:clamp(18px,2.1vw,29px);line-height:1.16;color:rgba(255,255,255,.8);margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:13px 18px;border:1px solid rgba(0,0,0,.16);background:#fff;color:#000;font-weight:800;letter-spacing:.02em;transition:transform .18s ease, background .18s ease, border-color .18s ease, color .18s ease}
.btn:hover{transform:translateY(-2px)}
.btn.dark{background:#0d0d0d;color:#fff;border-color:rgba(255,255,255,.18)}
.btn.ghost{background:transparent;color:inherit;border-color:rgba(255,255,255,.22)}
.hero .btn.ghost:hover{background:rgba(255,255,255,.08)}
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:38px;max-width:760px}
.metric{border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:16px;background:rgba(255,255,255,.045)}
.metric strong{font-size:34px;line-height:1;display:block;letter-spacing:-.05em}
.metric span{font-size:12px;color:rgba(255,255,255,.62);text-transform:uppercase;letter-spacing:.1em;margin-top:9px;display:block}
.hero-panel{background:#fff;color:#000;border-radius:34px;padding:22px;box-shadow:0 30px 100px rgba(0,0,0,.35);min-height:500px;display:flex;flex-direction:column;gap:18px;position:relative;overflow:hidden}
.hero-panel::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,0,0,.06),transparent 45%);pointer-events:none}
.main-logo-card{display:flex;align-items:center;gap:18px;position:relative;z-index:1}
.main-logo-card .logo-tile{width:100px;height:100px;border:1px solid var(--line);background:#fff;border-radius:22px;padding:15px;display:grid;place-items:center}
.main-logo-card strong{font-size:22px;letter-spacing:-.04em;display:block;text-transform:uppercase}
.main-logo-card span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.11em;display:block;margin-top:5px}
.flow-card{position:relative;z-index:1;border:1px solid var(--line);border-radius:26px;padding:18px;background:#f8f8f5;margin-top:auto}
.flow-card h2{margin:0 0 14px;font-size:16px;text-transform:uppercase;letter-spacing:.06em}
.flow{display:grid;gap:10px}
.flow-step{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:flex-start;padding:10px;border-radius:18px;background:#fff;border:1px solid var(--line)}
.flow-step span{width:34px;height:34px;border-radius:50%;background:#0d0d0d;color:#fff;display:grid;place-items:center;font-family:var(--mono);font-size:12px}
.flow-step strong{display:block;font-size:14px;margin-bottom:3px}
.flow-step small{display:block;color:var(--muted);font-size:12px}
.section{padding:74px 28px;max-width:1480px;margin:0 auto}
.section-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:28px}
.section-kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:800;margin-bottom:10px}
h2.section-title{font-size:clamp(34px,5vw,74px);line-height:.94;margin:0;letter-spacing:-.06em;text-transform:uppercase;max-width:920px}
.section-desc{max-width:520px;color:var(--muted);font-size:16px;margin:0}
.lab-shell{display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;align-items:start}
.lab-nav{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:12px;box-shadow:0 18px 60px rgba(0,0,0,.06)}
.lab-button{width:100%;display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;text-align:left;background:transparent;border:0;border-radius:22px;padding:12px;color:#000;transition:background .18s ease, transform .18s ease}
.lab-button:hover{background:var(--soft)}
.lab-button.is-active{background:#0d0d0d;color:#fff}
.lab-button .num{width:44px;height:44px;border-radius:16px;background:#f0efea;display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:#000}
.lab-button.is-active .num{background:#fff;color:#000}
.lab-button strong{display:block;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
.lab-button small{display:block;color:var(--muted);font-size:11px;margin-top:3px}
.lab-button.is-active small{color:rgba(255,255,255,.65)}
.tools-area{min-width:0}
.tools-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}
.search{flex:1;background:#fff;border:1px solid var(--line);border-radius:999px;padding:14px 18px;outline:none;min-width:0}
.search:focus{border-color:#000;box-shadow:0 0 0 4px rgba(0,0,0,.08)}
.count-pill{font-family:var(--mono);font-size:12px;color:var(--muted);white-space:nowrap}
.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.tool-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:16px;min-height:278px;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden;text-align:left;transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease}
.tool-card::after{content:"";position:absolute;inset:auto -30% -45% auto;width:210px;height:210px;border-radius:50%;background:radial-gradient(circle,rgba(0,0,0,.08),transparent 60%);opacity:0;transition:opacity .2s ease}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 18px 48px rgba(0,0,0,.09);border-color:#000}

.tool-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;position:relative;z-index:1}
.tool-index{font-family:var(--mono);font-size:11px;color:var(--muted)}
.tool-status{font-size:10px;text-transform:uppercase;letter-spacing:.08em;border:1px solid var(--line);border-radius:999px;padding:5px 7px;color:var(--muted)}
.tool-logo{width:88px;height:64px;border:1px solid var(--line);background:#fff;border-radius:14px;display:grid;place-items:center;padding:0;overflow:hidden;position:relative;z-index:1}
.tool-logo img{width:100%;height:100%;object-fit:cover}
.tool-card h3{margin:0;font-size:19px;letter-spacing:-.04em;line-height:1;text-transform:uppercase;position:relative;z-index:1}
.tool-card p{margin:0;color:var(--muted);font-size:13px;position:relative;z-index:1}
.tool-card .formula{font-size:12px;line-height:1.35;color:#4e4c47;margin-top:auto}
.tool-open{margin-top:4px;font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em;position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;width:max-content;max-width:100%;border-radius:999px;padding:9px 13px;border:1px solid var(--line);min-height:34px}
.tool-open.is-link{background:#0d0d0d;color:#fff;border-color:#0d0d0d;text-decoration:none}
.tool-open.is-link:hover{background:#2a2a2a;border-color:#2a2a2a}
.tool-open.is-disabled{background:#f2f1ed;color:#9b9890;border-color:#e6e4dc;cursor:default;pointer-events:none;filter:grayscale(1);opacity:.78}



















.matrix{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.matrix-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:20px;min-height:210px;display:flex;flex-direction:column}
.matrix-card .num{font-family:var(--mono);font-size:12px;color:var(--muted);margin-bottom:26px}
.matrix-card strong{display:block;font-size:22px;letter-spacing:-.04em;line-height:1;text-transform:uppercase;margin-bottom:8px}
.matrix-card p{color:var(--muted);font-size:13px;margin:0 0 18px}
.matrix-tools{margin-top:auto;font-family:var(--mono);font-size:11px;line-height:1.6;color:#111}
.logo-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
.logo-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;text-align:center}
.logo-card .logo-image{height:84px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;display:grid;place-items:center;margin-bottom:10px}
.logo-card .logo-image img{width:100%;height:100%;object-fit:cover}
.logo-card strong{display:block;font-size:12px;line-height:1.1;text-transform:uppercase;letter-spacing:.02em}
.logo-card span{display:block;font-size:10px;color:var(--muted);margin-top:4px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.about-card{background:#fff;border:1px solid var(--line);border-radius:34px;padding:28px;min-height:260px}
.about-card h3{font-size:32px;line-height:1;margin:0 0 16px;letter-spacing:-.04em;text-transform:uppercase}
.about-card p{color:var(--muted);margin:0 0 12px;font-size:15px;line-height:1.5}
.about-card code{font-family:var(--mono);background:#f0efea;border-radius:8px;padding:2px 5px}
.footer{padding:34px 28px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}
.footer-inner{max-width:1480px;margin:0 auto;display:flex;justify-content:space-between;gap:20px;align-items:center}
.footer strong{color:#000}

@media (max-width:1180px){.hero-inner{grid-template-columns:1fr}.lab-shell{grid-template-columns:260px 1fr}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.matrix{grid-template-columns:repeat(2,minmax(0,1fr))}.logo-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:820px){.header-inner{padding:0 16px}.header-nav{display:none}.hero{padding:48px 16px}.metrics{grid-template-columns:1fr}.section{padding:52px 16px}.section-head{display:block}.section-desc{margin-top:14px}.lab-shell{grid-template-columns:1fr}.lab-nav{position:relative;top:auto;display:grid;grid-template-columns:1fr;gap:4px}.tool-grid{grid-template-columns:1fr}.matrix,.about-grid,.logo-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){h1{font-size:48px}.hero-panel{border-radius:24px;padding:16px}.main-logo-card{display:block}.main-logo-card .logo-tile{margin-bottom:14px}.matrix,.about-grid,.logo-grid{grid-template-columns:1fr}.footer-inner{display:block}.brand{min-width:0}.brand-text span{display:none}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.tool-status.is-ready{background:#0d0d0d;color:#fff;border-color:#0d0d0d}

@media (max-width:820px){.header-main-site{margin-left:auto;padding:8px 10px;font-size:10px}.header-status{display:none}}

.btn.is-disabled,
a.btn.is-disabled,
a.btn[aria-disabled="true"]{
  opacity:1;
  pointer-events:none;
  cursor:default;
  background:rgba(255,255,255,.07);
  color:rgba(255,255,255,.36);
  border-color:rgba(255,255,255,.10);
  box-shadow:none;
  filter:grayscale(1);
  transform:none!important;
}

[hidden]{display:none!important}
.embed-empty{display:grid;place-items:center;min-height:180px;color:var(--muted);gap:8px;text-align:center}.embed-empty strong{display:block;color:var(--ink);font-size:18px}.embed-empty span{display:block;max-width:480px}

/* v4 language selector */
.language-picker{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.72);font-size:11px;text-transform:uppercase;letter-spacing:.1em;white-space:nowrap}
.language-picker label{opacity:.72}
.language-picker select{appearance:none;-webkit-appearance:none;background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:8px 28px 8px 11px;font-size:11px;font-weight:800;letter-spacing:.05em;outline:none;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,rgba(255,255,255,.72) 50%),linear-gradient(135deg,rgba(255,255,255,.72) 50%,transparent 50%);background-position:calc(100% - 14px) 50%,calc(100% - 9px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.language-picker select:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.16)}
.language-picker option{color:#000;background:#fff}
.tool-card .formula{min-height:64px}
@media (max-width:1180px){.language-picker label{display:none}.brand{min-width:320px}}
@media (max-width:820px){.language-picker{margin-left:auto}.language-picker select{max-width:132px}.header-main-site{display:none}}
@media (max-width:560px){.language-picker{order:4;width:100%;justify-content:flex-end;margin-left:0}.header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px}.brand{min-width:0;flex:1}.site-header{position:relative}.hero{min-height:auto}}

/* v4.1 mobile header and footer links */
.footer a.footer-link{color:inherit;text-decoration:none;border-bottom:1px solid rgba(0,0,0,.22)}
.footer a.footer-link:hover{color:#000;border-bottom-color:#000}
.footer a.footer-brand strong{color:#000}
@media (max-width:820px){
  .header-inner{flex-wrap:wrap;align-items:flex-start;gap:8px 12px;padding-top:10px;padding-bottom:10px;min-height:auto}
  .brand{order:1;flex:1 1 320px;min-width:0}
  .language-picker{order:2;margin-left:auto}
  .header-main-site{display:inline-flex!important;order:3;margin-left:55px;margin-right:auto;margin-top:-2px;margin-bottom:2px;padding:8px 10px;font-size:10px;max-width:calc(100% - 55px);white-space:nowrap}
  .header-status{display:none}
}
@media (max-width:560px){
  .brand{flex:1 1 100%}
  .language-picker{order:2;width:auto;justify-content:flex-start;margin-left:55px}
  .header-main-site{order:3;margin-left:55px;max-width:calc(100% - 55px)}
}


/* v4.2 mobile header: stacked, left-aligned layout */
@media (max-width:820px){
  .site-header{position:relative;}
  .header-inner{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    gap:10px;
    min-height:auto;
    padding:12px 16px 14px;
  }
  .brand{
    order:1;
    width:100%;
    flex:0 0 auto;
    min-width:0;
    align-items:flex-start;
  }
  .brand-text strong{
    white-space:normal;
    line-height:1.18;
  }
  .brand-text span{
    display:block!important;
    white-space:normal;
    line-height:1.25;
  }
  .language-picker{
    order:2;
    margin-left:55px!important;
    width:auto;
    justify-content:flex-start;
    align-items:center;
  }
  .language-picker label{
    display:inline!important;
  }
  .language-picker select{
    max-width:none;
    min-width:148px;
  }
  .header-main-site{
    display:inline-flex!important;
    order:3;
    margin:0 0 0 55px!important;
    max-width:calc(100% - 55px);
    white-space:normal;
    text-align:left;
  }
  .header-status{
    display:inline-flex!important;
    order:4;
    margin-left:55px;
    max-width:calc(100% - 55px);
    white-space:normal;
    line-height:1.25;
  }
}
@media (max-width:560px){
  .header-inner{
    padding:12px 14px 14px;
  }
  .brand-logo{
    width:42px;
    height:42px;
    flex:0 0 auto;
  }
  .language-picker,
  .header-main-site,
  .header-status{
    margin-left:55px!important;
    max-width:calc(100% - 55px);
  }
  .language-picker{
    flex-wrap:wrap;
    gap:6px 8px;
  }
}