:root {
    --n-0: #FFFFFF;
    --n-25: #FBFCFD;
    --n-50: #F7F8FA;
    --n-100: #EFF1F4;
    --n-200: #E3E6EB;
    --n-300: #D1D6DE;
    --n-400: #A9B1BD;
    --n-500: #6B7382;
    --n-600: #565E6B;
    --n-700: #3E4551;
    --n-800: #2A2F38;
    --n-900: #1B1F26;
    --n-950: #0F1216;
    --a-50: #EEF2FF;
    --a-100: #E0E7FF;
    --a-200: #C7D2FE;
    --a-400: #7C8CF8;
    --a-500: #4F62E6;
    --a-600: #3D4FD1;
    --a-700: #2F3EB0;
    --a-900: #232E73;
    --ok-bg: #ECFDF3;
    --ok-tint: #D1FADF;
    --ok-solid: #16A34A;
    --ok-text: #15803D;
    --ok-border: #A6E9C1;
    --info-bg: #EFF8FF;
    --info-tint: #D9EEFF;
    --info-solid: #1D83DE;
    --info-text: #0B69C7;
    --info-border: #A9D4F5;
    --warn-bg: #FFF8EB;
    --warn-tint: #FDECC8;
    --warn-solid: #D97706;
    --warn-text: #B45309;
    --warn-border: #F6D488;
    --danger-bg: #FEF2F2;
    --danger-tint: #FEE2E2;
    --danger-solid: #DC2626;
    --danger-text: #B91C1C;
    --danger-border: #F7B4B4;
    --shadow-rgb: 27,31,38;
    --font: "Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
    --r-sm: 6px;
    --r-md: 8px;
    --r-lg: 12px;
  }

  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;background:var(--n-50);color:var(--n-900);font-family:var(--font);
    font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;
    font-feature-settings:"cv05" 1,"ss03" 1}
  .wrap{max-width:1120px;margin:0 auto;padding-inline:24px}
  a{color:inherit;text-decoration:none}
  h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.022em;line-height:1.1;text-wrap:balance}
  p{margin:0}
  img,svg{max-width:100%}

  /* Visible focus on every interactive affordance (WCAG 2.2 AA, 2.4.11/2.4.13). */
  :where(a,button,summary,[tabindex]):focus-visible{outline:2px solid var(--a-600);
    outline-offset:3px;border-radius:var(--r-sm)}
  .dark :where(a,button):focus-visible,.cta :where(a,button):focus-visible{outline-color:var(--a-400)}
  .skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--n-0);color:var(--n-900);
    padding:10px 16px;border:1px solid var(--n-300);border-radius:var(--r-md);font-size:14px;font-weight:600}
  .skip:focus{left:16px;top:12px}

  .btn{display:inline-flex;align-items:center;font-weight:600;font-size:15px;
    padding:12px 22px;border-radius:var(--r-md);border:1px solid transparent;cursor:pointer;
    transition:background .15s,border-color .15s,color .15s}
  .btn-primary{background:var(--a-600);color:var(--n-0)}
  .btn-primary:hover{background:var(--a-700)}
  .btn-ghost{border-color:var(--n-300);color:var(--n-800);background:var(--n-0)}
  .btn-ghost:hover{border-color:var(--n-500)}
  .btn-ghost.inv{background:transparent;border-color:var(--n-700);color:var(--n-100)}
  .btn-ghost.inv:hover{border-color:var(--n-300)}

  /* ---------------- nav ---------------- */
  header.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--n-50) 92%,transparent);
    backdrop-filter:blur(10px);border-bottom:1px solid var(--n-200)}
  .nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:18px}
  .mark{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;letter-spacing:-.02em}
  .mark .glyph{width:27px;height:27px;border-radius:var(--r-sm);background:var(--a-600);color:var(--n-0);
    display:grid;place-items:center;flex:0 0 auto}
  .mark .glyph svg{width:15px;height:15px}
  .nav-links{display:flex;gap:28px;font-size:14.5px;color:var(--n-600);font-weight:500}
  .nav-links a:hover{color:var(--a-700)}
  .nav-right{display:flex;align-items:center;gap:14px}
  @media(max-width:900px){.nav-links{display:none}}
  /* Below ~640px the hero CTA is the only one that fits; it carries the same action. */
  @media(max-width:640px){.nav-right .btn{display:none}}

  /* Language control — two real URLs, so the inactive side is a link, not a toggle. */
  .lang{display:inline-flex;background:var(--n-0);border:1px solid var(--n-200);
    border-radius:var(--r-md);padding:2px;gap:2px}
  .lang>*{font-size:13px;font-weight:600;color:var(--n-600);padding:6px 11px;
    border-radius:var(--r-sm);white-space:nowrap;transition:color .14s,background .14s}
  .lang [aria-current]{background:var(--a-50);color:var(--a-700)}
  .lang a:hover{color:var(--n-900)}

  /* ---------------- hero ---------------- */
  .hero{padding-block:80px 70px;border-bottom:1px solid var(--n-200);background:var(--n-0)}
  .hero .wrap{display:grid;grid-template-columns:1.04fr .96fr;gap:58px;align-items:center}
  .hero h1{font-size:clamp(32px,4.7vw,54px);letter-spacing:-.032em;max-width:15ch}
  .hero .lede{font-size:18.5px;color:var(--n-600);margin:24px 0 32px;max-width:46ch;line-height:1.55}
  .hero .cta-row{display:flex;flex-wrap:wrap;gap:12px}
  .hero .under{font-size:14px;color:var(--n-500);margin-top:22px}
  @media(max-width:940px){.hero .wrap{grid-template-columns:1fr;gap:44px}.hero{padding-block:52px 46px}
    .hero h1{max-width:19ch}}

  /* Product replica — built from the real DS surface treatments. */
  .app{border:1px solid var(--n-200);border-radius:var(--r-lg);background:var(--n-0);overflow:hidden;
    box-shadow:0 1px 2px rgba(var(--shadow-rgb),.04),0 24px 48px -28px rgba(var(--shadow-rgb),.22)}
  .app-top{display:flex;align-items:center;gap:10px;padding:11px 14px;
    border-bottom:1px solid var(--n-200);background:var(--n-25)}
  .app-top .b{width:20px;height:20px;border-radius:5px;background:var(--a-600);flex:0 0 auto}
  .app-top .crumb{font-size:12.5px;color:var(--n-600);font-weight:500}
  .app-top .crumb b{color:var(--n-900);font-weight:600}
  /* minmax(0,…) throughout the nested mock: an auto track minimum would let the
     nowrap badges push the grid past the viewport and scroll the whole page at ~400px. */
  .app-body{display:grid;grid-template-columns:118px minmax(0,1fr)}
  .app-rail{border-right:1px solid var(--n-200);background:var(--n-25);padding:12px 10px;
    display:grid;gap:3px;align-content:start}
  .rail-i{font-size:12px;color:var(--n-600);padding:7px 9px;border-radius:var(--r-sm);font-weight:500}
  .rail-i.on{background:var(--a-50);color:var(--a-700);font-weight:600}
  .app-main{padding:14px;min-width:0}
  .app-filters{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap}
  .f{font-size:11.5px;padding:4px 10px;border-radius:999px;border:1px solid var(--n-200);
    color:var(--n-600);background:var(--n-0)}
  .f.on{background:var(--n-900);border-color:var(--n-900);color:var(--n-0);font-weight:500}
  .cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .card{border:1px solid var(--n-200);border-radius:var(--r-md);overflow:hidden;background:var(--n-0);min-width:0}
  .card .th{aspect-ratio:4/3;background:var(--n-100);position:relative}
  .card .th::after{content:"";position:absolute;left:12%;right:12%;top:18%;bottom:18%;
    border-radius:4px;background:var(--n-200)}
  /* The id keeps a floor so the nowrap badge drops to its own line in a narrow card
     instead of squeezing the asset id down to an ellipsis. */
  .card .cm{padding:7px 8px;display:flex;align-items:center;justify-content:space-between;
    gap:4px 6px;flex-wrap:wrap}
  .card .ttl{font-size:11px;font-weight:600;color:var(--n-800);overflow:hidden;
    text-overflow:ellipsis;white-space:nowrap;min-width:46px}
  .badge{font-size:10px;font-weight:600;padding:2px 7px;border-radius:999px;border:1px solid;
    white-space:nowrap}
  .b-ok{background:var(--ok-bg);border-color:var(--ok-border);color:var(--ok-text)}
  .b-rev{background:var(--info-bg);border-color:var(--info-border);color:var(--info-text)}
  .b-draft{background:var(--n-100);border-color:var(--n-200);color:var(--n-600)}
  .app-meta{margin-top:12px;border-top:1px solid var(--n-200);padding-top:11px;display:grid;gap:7px}
  .mrow{display:flex;justify-content:space-between;gap:10px;font-size:12px}
  .mrow .k{color:var(--n-500)}
  .mrow .v{color:var(--n-800);font-weight:500}
  .mrow .v.ok{color:var(--ok-text)}
  .steps{display:flex;align-items:center;gap:5px;flex-wrap:wrap;margin-top:3px}
  .st{font-size:10px;font-weight:600;padding:3px 8px;border-radius:var(--r-sm);
    background:var(--n-100);color:var(--n-500)}
  .st.d{background:var(--ok-bg);color:var(--ok-text)}
  .st.n{background:var(--a-600);color:var(--n-0)}
  .sep{color:var(--n-300);font-size:10px}
  /* Three cards cannot hold a readable id + state badge on a phone; show two. */
  @media(max-width:640px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}
    .cards .card:nth-child(3){display:none}}

  /* ---------------- trust ---------------- */
  .trust{border-bottom:1px solid var(--n-200);background:var(--n-0)}
  .trust .wrap{padding-block:20px;font-size:14.5px;color:var(--n-700)}
  .trust ul{list-style:none;margin:0;padding:0;display:flex;gap:18px 38px;flex-wrap:wrap}
  .trust li{display:flex;align-items:center;gap:9px;font-weight:500}
  .trust svg{width:16px;height:16px;color:var(--a-600);flex:0 0 auto}

  /* ---------------- sections ---------------- */
  section{padding-block:94px}
  .deck{max-width:650px;margin-bottom:54px}
  .deck.mid{margin-inline:auto;text-align:center}
  h2.sec{font-size:clamp(25px,3.3vw,38px);letter-spacing:-.028em}
  .deck p{color:var(--n-600);font-size:17.5px;margin-top:17px;line-height:1.55}
  @media(max-width:640px){section{padding-block:58px}.deck{margin-bottom:36px}}

  .pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:44px}
  .pillar{border-top:2px solid var(--n-900);padding-top:20px}
  .pillar:nth-child(2){border-top-color:var(--a-600)}
  .pillar:nth-child(3){border-top-color:var(--ok-solid)}
  .pillar h3{font-size:21px;margin-bottom:11px;letter-spacing:-.02em}
  .pillar>p{color:var(--n-600);font-size:15.5px;margin-bottom:17px}
  .pillar ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
  .pillar li{display:flex;gap:10px;font-size:14.5px;color:var(--n-700)}
  .pillar li svg{width:15px;height:15px;color:var(--a-600);flex:0 0 auto;margin-top:4px}
  @media(max-width:880px){.pillars{grid-template-columns:1fr;gap:36px}}

  .band{background:var(--n-0);border-top:1px solid var(--n-200);border-bottom:1px solid var(--n-200)}
  .rows{display:grid;gap:72px}
  .row2{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
  .row2.flip .txt{order:2}
  .row2 .txt h3{font-size:26px;margin-bottom:14px;letter-spacing:-.024em}
  .row2 .txt>p{color:var(--n-600);margin-bottom:22px}
  .feat-list{display:grid;gap:16px}
  .feat{padding-left:15px;border-left:2px solid var(--n-200);transition:border-color .15s}
  .feat:hover{border-left-color:var(--a-500)}
  .feat b{display:block;font-weight:600;font-size:15px;margin-bottom:3px}
  .feat span{font-size:14.5px;color:var(--n-500)}
  @media(max-width:880px){.row2{grid-template-columns:1fr;gap:30px}.row2.flip .txt{order:0}.rows{gap:54px}}

  .panel{border:1px solid var(--n-200);border-radius:var(--r-lg);background:var(--n-25);padding:20px}
  .plist{display:grid;gap:10px}
  .pitem{display:flex;align-items:center;gap:12px;background:var(--n-0);border:1px solid var(--n-200);
    border-radius:var(--r-md);padding:12px 14px}
  .pitem .n{width:24px;height:24px;border-radius:var(--r-sm);background:var(--n-100);color:var(--n-700);
    font-size:11.5px;font-weight:600;display:grid;place-items:center;flex:0 0 auto}
  .pitem .ft{min-width:0}
  .pitem .ft b{font-size:14px;font-weight:600;display:block}
  .pitem .ft span{font-size:13px;color:var(--n-500)}
  .pitem .badge{margin-left:auto}
  .sbox{display:flex;align-items:center;gap:10px;background:var(--n-0);border:1px solid var(--n-200);
    border-radius:var(--r-md);padding:11px 13px;font-size:14px;color:var(--n-700)}
  .sbox svg{width:16px;height:16px;color:var(--a-600);flex:0 0 auto}
  .sbox.gap-top{margin-top:11px}
  .tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:11px;list-style:none;padding:0}
  .tag{font-size:12.5px;padding:4px 10px;border-radius:999px;background:var(--n-0);
    border:1px solid var(--n-200);color:var(--n-700)}
  .tag.ai{background:var(--a-50);border-color:var(--a-200);color:var(--a-700);font-weight:500}

  /* ---------------- dark spec band (neutral 950) ---------------- */
  .dark{background:var(--n-950);color:var(--n-100)}
  .dark h2.sec,.dark h3{color:var(--n-0)}
  .dark .deck p{color:var(--n-400)}
  .spec{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--n-800);
    border:1px solid var(--n-800);border-radius:var(--r-lg);overflow:hidden}
  .cell{background:var(--n-900);padding:26px 24px}
  .cell h3{font-size:15.5px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
  .cell p{font-size:14px;color:var(--n-400);line-height:1.55}
  .cell .k{display:block;width:26px;height:2px;background:var(--a-400);margin-bottom:16px}
  @media(max-width:880px){.spec{grid-template-columns:1fr}}

  .how-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;counter-reset:s;
    list-style:none;margin:0;padding:0}
  .how-step{position:relative;padding-top:21px;border-top:1px solid var(--n-200)}
  .how-step::before{counter-increment:s;content:counter(s,decimal-leading-zero);
    font-size:12.5px;font-weight:600;color:var(--a-600);position:absolute;top:-9px;
    background:var(--n-0);padding-right:9px}
  .how-step h3{font-size:16.5px;margin-bottom:8px;letter-spacing:-.015em}
  .how-step p{font-size:14.5px;color:var(--n-500)}
  @media(max-width:860px){.how-steps{grid-template-columns:1fr 1fr}}
  @media(max-width:520px){.how-steps{grid-template-columns:1fr}}

  /* ---------------- bilingual specimen ---------------- */
  .bil .wrap{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
  .bil p.d{color:var(--n-600);margin-top:17px;font-size:17px;max-width:46ch;line-height:1.55}
  .bil .note{font-size:14px;color:var(--n-500);margin-top:18px}
  .pair{border:1px solid var(--n-200);border-radius:var(--r-lg);overflow:hidden;background:var(--n-0)}
  .pair .cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .pcol{padding:18px;min-width:0}
  .pcol+.pcol{border-left:1px solid var(--n-200)}
  .pcol .h{font-size:12.5px;color:var(--n-500);margin-bottom:14px;font-weight:600}
  .pline{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;
    border-bottom:1px solid var(--n-100);font-size:13.5px;color:var(--n-700)}
  .pline>span:first-child{min-width:0;overflow-wrap:anywhere}
  .pline:last-child{border-bottom:0}
  @media(max-width:880px){.bil .wrap{grid-template-columns:1fr;gap:34px}}
  @media(max-width:460px){.pair .cols{grid-template-columns:1fr}
    .pcol+.pcol{border-left:0;border-top:1px solid var(--n-200)}}

  .cta{background:var(--n-950);color:var(--n-0);text-align:center}
  .cta h2{font-size:clamp(26px,3.9vw,43px);max-width:18ch;margin:0 auto 18px;letter-spacing:-.03em}
  .cta p{color:var(--n-400);font-size:17.5px;max-width:50ch;margin:0 auto 32px}
  .cta .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

  footer{background:var(--n-50);border-top:1px solid var(--n-200);padding-block:46px 38px}
  footer .wrap{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}
  footer h3{font-size:13px;color:var(--n-900);font-weight:600;margin:0 0 13px}
  footer .fcol a{display:block;font-size:14.5px;color:var(--n-600);padding:5px 0}
  footer .fcol a:hover{color:var(--a-700)}
  footer .about p{font-size:14.5px;color:var(--n-500);margin-top:14px;max-width:36ch}
  .fbase{border-top:1px solid var(--n-200);margin-top:36px;padding-top:22px;display:flex;
    justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--n-500)}
  @media(max-width:820px){footer .wrap{grid-template-columns:1fr 1fr}}
  @media(max-width:520px){footer .wrap{grid-template-columns:1fr}}

  /* Respect the viewer's motion preference (WCAG 2.2 AA, 2.3.3). */
  @media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;
      animation-iteration-count:1!important}
  }