:root{
    --ink:#191B1A;          /* soft near-black */
    --ink-2:#3C4140;        /* body text */
    --slate:#6E7370;        /* secondary */
    --faint:#9A9E99;        /* tertiary / captions */
    --paper:#FFFFFF;        /* white */
    --paper-2:#F7F6F2;      /* light panel */
    --rule:#E7E5DF;         /* hairline */
    --rule-2:#F0EFEA;
    --accent:#ED8410;       /* brand orange — large/graphic */
    --accent-2:#B5601A;     /* deeper orange — small text & links */
    --err:#C4503C;
    --maxw:1140px;
    --measure:62ch;
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--paper);color:var(--ink-2);
    font-family:"Hanken Grotesk",system-ui,sans-serif;
    font-size:16px;line-height:1.62;font-weight:400;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  }
  ::selection{background:var(--accent);color:var(--paper)}
  .serif{font-family:"Instrument Serif",Georgia,serif;font-weight:400;font-style:normal;letter-spacing:.005em;color:var(--ink)}
  .mono{font-family:"IBM Plex Mono",monospace}
  h1,h2,h3{font-family:"Instrument Serif",Georgia,serif;font-weight:400;color:var(--ink);margin:0;line-height:1.04;letter-spacing:.004em}
  p{margin:0 0 1rem}
  a{color:inherit;text-decoration:none}
  img,svg{display:block}

  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

  /* label / eyebrow */
  .lbl{font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--slate)}
  .idx{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-2)}

  /* links */
  .link{color:var(--accent-2);border-bottom:1px solid color-mix(in srgb, var(--accent-2) 35%, transparent);padding-bottom:1px;transition:border-color .25s, color .25s}
  .link:hover{border-color:var(--accent-2)}
  .arr::after{content:"→";display:inline-block;margin-left:.4em;transition:transform .25s var(--ease)}
  .arr:hover::after{transform:translateX(3px)}

  /* buttons — slim, low radius, restrained */
  .btn{display:inline-flex;align-items:center;gap:.55rem;font-family:"Hanken Grotesk";font-size:14px;font-weight:500;
    letter-spacing:.01em;padding:.62rem 1.15rem;border-radius:3px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);
    cursor:pointer;transition:background .25s,color .25s,border-color .25s,transform .25s var(--ease)}
  .btn:hover{background:transparent;color:var(--ink);transform:translateY(-1px)}
  .btn--line{background:transparent;color:var(--ink);border-color:var(--rule)}
  .btn--line:hover{border-color:var(--ink);background:transparent}

  /* ---------------- nav ---------------- */
  .nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb, var(--paper) 86%, transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
  .nav__in{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
  .brand{display:flex;align-items:center;gap:.7rem}
  .brand__logo{height:44px;width:auto;display:block}
  .brand__glyph{width:30px;height:30px;flex:none;color:var(--ink)}
  .brand__tx{display:flex;flex-direction:column;line-height:1}
  .brand__name{font-family:"Instrument Serif",serif;font-size:21px;color:var(--ink);letter-spacing:.01em}
  .brand__sub{font-family:"IBM Plex Mono",monospace;font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin-top:3px}
  .nav__mid{display:flex;gap:34px}
  .nav__mid a{font-size:14.5px;color:var(--ink-2);transition:color .2s}
  .nav__mid a:hover{color:var(--ink)}
  .nav__r{display:flex;align-items:center;gap:20px}
  .nav__tel{font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--ink)}
  .lang{display:inline-flex;border:1px solid var(--rule);border-radius:4px;overflow:hidden}
  .lang button{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.06em;padding:6px 10px;background:none;border:none;cursor:pointer;color:var(--slate);transition:.18s}
  .lang button:hover{color:var(--ink)}
  .lang button.on{background:var(--ink);color:#fff}
  .lang--m{display:none;margin:14px 32px;width:max-content}
  .burger{display:none;width:40px;height:40px;border:1px solid var(--rule);border-radius:3px;background:none;cursor:pointer;align-items:center;justify-content:center}
  .burger svg{width:18px;height:18px;color:var(--ink)}
  .mnav{display:none}

  /* ---------------- hero ---------------- */
  .hero{padding:74px 0 0}
  .hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
  .hero h1{font-size:clamp(2.9rem,6vw,5.1rem);line-height:.98}
  .hero h1 .i{font-style:italic;color:var(--accent)}
  .hero__lede{font-size:1.12rem;color:var(--ink-2);max-width:42ch;margin:1.5rem 0 1.9rem}
  .hero__cta{display:flex;align-items:center;gap:1.4rem;flex-wrap:wrap}

  /* specs strip */
  .specs{border-top:1px solid var(--rule);margin-top:64px}
  .specs__in{display:flex;flex-wrap:wrap;gap:0}
  .specs dl{flex:1 1 0;min-width:150px;padding:22px 28px 24px;border-right:1px solid var(--rule);margin:0}
  .specs dl:last-child{border-right:none}
  .specs dt{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin-bottom:7px}
  .specs dd{margin:0;font-size:15px;color:var(--ink)}

  /* fine-line chart in hero */
  .chart{width:100%;max-width:430px;margin-left:auto}
  .chart svg{width:100%;height:auto;overflow:visible}
  .chart .cap{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-top:14px;display:flex;justify-content:space-between}
  .drone-fly{animation:hover 7s ease-in-out infinite}
  @keyframes hover{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

  /* ---------------- section scaffolding ---------------- */
  section{padding:104px 0}
  .head{display:grid;grid-template-columns:1fr 2.1fr;gap:40px;align-items:start;margin-bottom:60px}
  .head__l .idx{display:block;margin-bottom:10px}
  .head__l .lbl{color:var(--ink)}
  .head h2{font-size:clamp(2.1rem,4vw,3.2rem)}
  .head__r p{font-size:1.08rem;color:var(--ink-2);max-width:54ch;margin:0}

  /* coverage — hairline columns, no boxes */
  .cov{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--ink)}
  .cov__col{padding:34px 30px 6px;border-right:1px solid var(--rule)}
  .cov__col:first-child{padding-left:0}
  .cov__col:last-child{border-right:none;padding-right:0}
  .cov__n{font-family:"Instrument Serif",serif;font-size:2.6rem;color:var(--accent);line-height:1}
  .cov__ic{margin:18px 0 16px;color:var(--accent)}
  .cov__ic svg{width:34px;height:34px}
  .cov h3{font-size:1.6rem;margin-bottom:.5rem}
  .cov p{font-size:.98rem;color:var(--ink-2);margin:0 0 18px}
  .cov__t{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint)}
  .cov__note{margin-top:30px;font-size:.98rem;color:var(--slate)}
  .cov__note b{color:var(--ink);font-weight:500}

  /* who we insure */
  .who{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--rule);background:var(--paper-2)}
  .who__c{padding:42px 40px}
  .who__c:first-child{border-right:1px solid var(--rule)}
  .who__c .idx{display:block;margin-bottom:14px}
  .who h3{font-size:1.7rem;margin-bottom:.5rem}
  .who__d{font-size:1rem;color:var(--ink-2);margin-bottom:24px;max-width:38ch}
  .tags{list-style:none;margin:0;padding:0}
  .tags li{display:inline;font-size:.97rem;color:var(--ink-2)}
  .tags li::after{content:" · ";color:var(--rule);font-weight:600}
  .tags li:last-child::after{content:""}

  /* part 107 — definition index */
  .reg{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--ink)}
  .reg__i{padding:30px 26px 4px;border-right:1px solid var(--rule)}
  .reg__i:first-child{padding-left:0}
  .reg__i:last-child{border-right:none;padding-right:0}
  .reg__i .idx{display:block;margin-bottom:14px;color:var(--slate)}
  .reg__i h3{font-size:1.32rem;margin-bottom:.45rem;letter-spacing:0}
  .reg__i p{font-size:.93rem;color:var(--ink-2);margin:0}
  .reg__foot{grid-column:1/-1;border-top:1px solid var(--rule);margin-top:30px;padding-top:22px;font-size:.92rem;color:var(--slate)}

  /* process */
  .steps{border-top:1px solid var(--ink)}
  .step{display:grid;grid-template-columns:auto 1fr;gap:34px;padding:34px 0;border-bottom:1px solid var(--rule);align-items:baseline}
  .step:last-child{border-bottom:none}
  .step__n{font-family:"Instrument Serif",serif;font-size:2.4rem;color:var(--accent);line-height:1}
  .step__b{display:grid;grid-template-columns:1fr 2.4fr;gap:34px}
  .step h3{font-size:1.5rem}
  .step p{font-size:1rem;color:var(--ink-2);margin:0;max-width:52ch}

  /* faq */
  .faq{border-top:1px solid var(--ink)}
  .qa{border-bottom:1px solid var(--rule)}
  .qa>summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:26px 0;
    font-family:"Instrument Serif",serif;font-size:1.5rem;color:var(--ink);transition:color .2s}
  .qa>summary::-webkit-details-marker{display:none}
  .qa>summary:hover{color:var(--accent)}
  .qa__sign{font-family:"IBM Plex Mono",monospace;font-size:1.1rem;color:var(--accent-2);flex:none;line-height:1.6}
  .qa[open] .qa__plus{display:none}
  .qa__minus{display:none}
  .qa[open] .qa__minus{display:inline}
  .qa__a{padding:0 60px 28px 0;font-size:1.02rem;color:var(--ink-2);max-width:64ch}

  /* quote */
  .quote{background:var(--paper-2);border-top:1px solid var(--rule)}
  .quote__grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
  .quote h2{font-size:clamp(2.2rem,4vw,3.3rem);margin-bottom:1rem}
  .quote__lede{font-size:1.06rem;color:var(--ink-2);max-width:36ch}
  .quote__alt{margin-top:34px;border-top:1px solid var(--rule);padding-top:8px}
  .quote__alt a{display:flex;align-items:baseline;gap:14px;padding:15px 0;border-bottom:1px solid var(--rule);transition:padding-left .25s var(--ease)}
  .quote__alt a:hover{padding-left:8px}
  .quote__alt .k{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);width:56px;flex:none}
  .quote__alt .v{font-size:1.02rem;color:var(--ink)}

  /* underline form fields */
  .form__row{display:grid;grid-template-columns:1fr 1fr;gap:26px}
  .fld{display:flex;flex-direction:column;margin-bottom:26px}
  .fld label{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin-bottom:9px}
  .fld input,.fld select,.fld textarea{
    font-family:"Hanken Grotesk";font-size:1rem;color:var(--ink);background:transparent;
    border:none;border-bottom:1px solid var(--rule);padding:6px 0 9px;outline:none;transition:border-color .25s;width:100%;border-radius:0}
  .fld textarea{resize:vertical;min-height:30px}
  .fld input::placeholder,.fld textarea::placeholder{color:var(--faint)}
  .fld input:focus,.fld select:focus,.fld textarea:focus{border-bottom-color:var(--accent)}
  .fld select{appearance:none;background:transparent;cursor:pointer}
  .fld--err input,.fld--err select{border-bottom-color:var(--err)}
  .fld__e{color:var(--err);font-size:12px;margin-top:6px;font-family:"IBM Plex Mono"}
  .form__act{display:flex;align-items:center;gap:20px;margin-top:8px}
  .form__note{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--faint);letter-spacing:.04em}
  .form__ok{display:none;border:1px solid var(--rule);padding:40px 36px;text-align:left}
  .form__ok .serif{font-size:1.9rem;display:block;margin-bottom:.4rem}
  .form__ok p{margin:0;color:var(--ink-2)}
  .is-done .form__body{display:none}
  .is-done .form__ok{display:block}

  /* footer */
  .foot{border-top:1px solid var(--ink);padding:62px 0 30px}
  .foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
  .foot__brand .brand{margin-bottom:16px}
  .foot__brand p{font-size:.95rem;color:var(--slate);max-width:34ch;margin:0 0 16px}
  .foot__addr{font-style:normal;font-family:"IBM Plex Mono",monospace;font-size:12px;line-height:1.9;color:var(--slate)}
  .foot h4{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin:0 0 18px;font-weight:500}
  .foot__grid a{display:block;font-size:.96rem;color:var(--ink-2);margin-bottom:11px;width:fit-content;transition:color .2s}
  .foot__grid a:hover{color:var(--accent-2)}
  .foot__bot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid var(--rule);margin-top:48px;padding-top:22px;
    font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.06em;color:var(--faint)}
  .disc{font-size:11.5px;line-height:1.7;color:var(--faint);max-width:88ch;margin-top:18px}

  /* ---------------- application overlay ---------------- */
  body.app-open{overflow:hidden}
  .ov{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:26px}
  .ov.open{display:flex}
  .ov__bd{position:absolute;inset:0;background:rgba(20,22,21,.5);backdrop-filter:blur(3px);opacity:0;transition:opacity .3s}
  .ov.open .ov__bd{opacity:1}
  .ov__panel{position:relative;width:100%;max-width:880px;max-height:92vh;background:#fff;border-radius:6px;
    display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 90px -20px rgba(20,22,21,.45);
    transform:translateY(14px) scale(.99);opacity:0;transition:transform .35s var(--ease),opacity .35s}
  .ov.open .ov__panel{transform:none;opacity:1}

  .ov__h{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 26px 16px}
  .ov__h .t{font-family:"Instrument Serif",serif;font-size:1.4rem;color:var(--ink);line-height:1.1}
  .ov__h .s{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-top:4px;display:block}
  .ov__x{flex:none;width:40px;height:40px;border:1px solid var(--rule);border-radius:4px;background:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--ink);transition:border-color .2s,background .2s}
  .ov__x:hover{border-color:var(--ink);background:var(--paper-2)}
  .ov__x svg{width:18px;height:18px}
  .ov__prog{height:2px;background:var(--rule-2)}
  .ov__prog i{display:block;height:100%;width:0;background:var(--accent);transition:width .4s var(--ease)}

  .ov__b{flex:1;overflow:auto;padding:26px 26px 8px;-webkit-overflow-scrolling:touch}
  .ov__b::-webkit-scrollbar{width:10px}
  .ov__b::-webkit-scrollbar-thumb{background:var(--rule);border-radius:6px;border:3px solid #fff}
  .ov__steptitle{font-family:"Instrument Serif",serif;font-size:1.9rem;color:var(--ink);line-height:1.05;margin-bottom:6px}
  .ov__stepintro{color:var(--ink-2);font-size:.98rem;margin-bottom:22px;max-width:60ch}
  .astep{display:none;border:0;margin:0;padding:0;min-width:0}
  .astep.active{display:block;animation:fadein .35s var(--ease)}
  @keyframes fadein{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

  .asub{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2);
    margin:30px 0 16px;padding-top:18px;border-top:1px solid var(--rule)}
  .asub:first-child{margin-top:0;padding-top:0;border-top:none}
  .afgrid{display:grid;grid-template-columns:1fr 1fr;gap:0 26px}

  .afld{display:flex;flex-direction:column;margin-bottom:20px;min-width:0}
  .afld .alabel{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--slate);margin-bottom:9px}
  .afld input,.afld select,.afld textarea{font-family:"Hanken Grotesk";font-size:1rem;color:var(--ink);background:transparent;
    border:none;border-bottom:1px solid var(--rule);padding:6px 0 9px;outline:none;width:100%;border-radius:0;transition:border-color .25s}
  .afld textarea{resize:vertical;min-height:30px;line-height:1.5}
  .afld input::placeholder,.afld textarea::placeholder{color:var(--faint)}
  .afld input:focus,.afld select:focus,.afld textarea:focus{border-bottom-color:var(--accent)}
  .afld select{appearance:none;cursor:pointer}
  .afld--full,.afld--textarea,.afld--radio,.afld--checks,.afld--percent,.afld--repeat,.afld--hull{grid-column:1/-1}
  .afld.err input,.afld.err select{border-bottom-color:var(--err)}
  .afld .e{color:var(--err);font-size:12px;margin-top:6px;font-family:"IBM Plex Mono",monospace;min-height:0}

  .seg{display:flex;flex-wrap:wrap;gap:8px}
  .seg label{position:relative;cursor:pointer}
  .seg input{position:absolute;inset:0;opacity:0;cursor:pointer;margin:0}
  .seg span{display:block;padding:8px 15px;border:1px solid var(--rule);border-radius:3px;font-size:14px;color:var(--ink-2);transition:.18s;user-select:none}
  .seg input:checked+span{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,#fff);color:var(--ink)}
  .seg input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}

  .pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px 22px}
  .pcell{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--rule);padding-bottom:4px}
  .pcell .pl{font-size:13px;color:var(--ink-2);flex:1}
  .pcell input{width:48px!important;text-align:right;border:none!important;padding:4px 0!important;font-variant-numeric:tabular-nums}
  .pcell em{font-style:normal;color:var(--faint);font-size:12px}
  .psum{grid-column:1/-1;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--slate);text-align:right;margin-top:8px}
  .psum b{color:var(--ink)}
  .psum.bad b{color:var(--err)} .psum.ok b{color:var(--accent-2)}

  .arepeat{margin-bottom:6px}
  .ainst{border:1px solid var(--rule);border-radius:5px;padding:18px 18px 0;margin-bottom:14px;background:var(--paper-2)}
  .ainst__h{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
  .ainst__h b{font-family:"Instrument Serif",serif;font-size:1.2rem;color:var(--ink);font-weight:400}
  .ainst__rm{background:none;border:none;color:var(--err);font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.04em;cursor:pointer;padding:4px}
  .ainst__rm:hover{text-decoration:underline}
  .aadd{background:none;border:1px dashed var(--rule);border-radius:4px;color:var(--accent-2);font-family:"Hanken Grotesk";font-size:14px;font-weight:500;
    padding:11px 16px;cursor:pointer;width:100%;transition:.2s;margin-bottom:6px}
  .aadd:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,#fff)}
  .aadd[hidden]{display:none}

  .acheck{display:flex;gap:11px;align-items:flex-start;margin:6px 0 4px;cursor:pointer}
  .acheck input{margin:3px 0 0;accent-color:var(--accent);width:16px;height:16px;flex:none}
  .acheck span{font-size:.95rem;color:var(--ink-2)}

  .arev{display:grid;grid-template-columns:1fr;gap:0}
  .arev__grp{border-top:1px solid var(--rule);padding:16px 0}
  .arev__grp:first-child{border-top:none}
  .arev__grp h4{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin:0 0 10px}
  .arev__row{display:grid;grid-template-columns:minmax(0,200px) 1fr;gap:6px 18px;padding:3px 0;font-size:.92rem}
  .arev__row dt{color:var(--slate)}
  .arev__row dd{margin:0;color:var(--ink)}
  .arev__empty{color:var(--faint);font-size:.9rem}

  .ov__f{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 26px;border-top:1px solid var(--rule);background:#fff}
  .ov__f .left{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--faint)}
  .ov__f .right{display:flex;gap:10px}
  .ov__done{display:none;text-align:center;padding:40px 10px 30px}
  .ov__done .serif{display:block;font-size:2rem;color:var(--ink);margin-bottom:.5rem}
  .ov__done p{color:var(--ink-2);max-width:42ch;margin:0 auto 1.4rem}
  .ov.done .ov__b .astep,.ov.done .ov__f,.ov.done .ov__prog{display:none}
  .ov.done .ov__done{display:block}

  /* reveal */
  .rv{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
  .rv.in{opacity:1;transform:none}

  /* ---------------- responsive ---------------- */
  @media(max-width:920px){
    .nav__mid,.nav__tel{display:none}
    .nav__r .btn{display:none}
    #langSwitch{display:none}
    .lang--m{display:inline-flex}
    .burger{display:flex}
    .brand__logo{height:38px}
    .mnav{display:none;flex-direction:column;background:var(--paper);border-bottom:1px solid var(--rule)}
    .mnav.open{display:flex}
    .mnav a{padding:15px 32px;border-top:1px solid var(--rule);font-size:15px;color:var(--ink)}
    .hero__grid,.quote__grid{grid-template-columns:1fr;gap:48px}
    .chart{margin:0 auto}
    .head{grid-template-columns:1fr;gap:14px;margin-bottom:44px}
    .cov,.reg{grid-template-columns:1fr}
    .cov__col,.reg__i{border-right:none;border-bottom:1px solid var(--rule);padding-left:0;padding-right:0}
    .cov__col:last-child,.reg__i:last-child{border-bottom:none}
    .who{grid-template-columns:1fr}
    .who__c:first-child{border-right:none;border-bottom:1px solid var(--rule)}
    .step,.step__b{grid-template-columns:1fr;gap:12px}
    .foot__grid{grid-template-columns:1fr 1fr}
  }
  @media(max-width:560px){
    .wrap{padding:0 22px}
    section{padding:72px 0}
    .specs dl{flex:1 1 50%;border-bottom:1px solid var(--rule)}
    .specs dl:nth-child(2){border-right:none}
    .form__row{grid-template-columns:1fr;gap:0}
    .foot__grid{grid-template-columns:1fr}
    .hero__cta{gap:1rem}
  }
  @media(max-width:680px){
    .ov{padding:0}
    .ov__panel{max-width:none;max-height:100vh;height:100vh;border-radius:0}
    .afgrid{grid-template-columns:1fr}
    .pgrid{grid-template-columns:1fr 1fr}
  }
  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;scroll-behavior:auto!important}
    .rv{opacity:1;transform:none;transition:none}
  }

/* ============================================================
   SUBPAGE COMPONENTS (regulations + legal)
   ============================================================ */
.sub-hero{padding:64px 0 28px}
.crumb{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:26px}
.crumb a{color:var(--accent-2)} .crumb a:hover{color:var(--accent)}
.crumb span{margin:0 8px;color:var(--rule)}
.sub-hero h1{font-size:clamp(2.6rem,5vw,4.2rem);line-height:1.0;letter-spacing:-.01em}
.sub-hero h1 .i{font-style:italic;color:var(--accent)}
.sub-lede{font-size:1.18rem;line-height:1.5;color:var(--ink-2);max-width:60ch;margin-top:22px}
.stamp{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin-top:26px;display:flex;gap:10px;align-items:center}
.stamp::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

.sec{padding:42px 0;border-top:1px solid var(--rule)}
.sec__lead{display:grid;grid-template-columns:minmax(0,260px) 1fr;gap:30px;align-items:start;margin-bottom:30px}
.sec__lead .idx{margin:0}
.sec__lead h2{font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.06;margin:0}
.sec__lead p{color:var(--ink-2);margin:14px 0 0;max-width:62ch}
@media(max-width:760px){.sec__lead{grid-template-columns:1fr;gap:10px}}

.layer3{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.layer3 .lay{padding:26px 26px 26px 0;border-left:1px solid var(--rule);padding-left:26px}
.layer3 .lay:first-child{border-left:none;padding-left:0}
.lay__n{font-family:"Instrument Serif",serif;font-size:2rem;color:var(--accent);line-height:1}
.lay__k{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);margin:12px 0 8px}
.lay h3{font-size:1.3rem;margin:0 0 8px}
.lay p{color:var(--ink-2);font-size:.97rem;margin:0}
@media(max-width:760px){.layer3{grid-template-columns:1fr}.layer3 .lay{border-left:none;padding-left:0;border-top:1px solid var(--rule);padding-top:22px}.layer3 .lay:first-child{border-top:none;padding-top:0}}

.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule)}
.facts div{background:var(--paper);padding:18px}
.facts dt{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.facts dd{margin:6px 0 0;font-size:.98rem;color:var(--ink);line-height:1.35}

.ftable{width:100%;border-collapse:collapse;font-size:.92rem}
.ftable thead th{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate);text-align:left;padding:10px 12px;border-bottom:1.5px solid var(--ink)}
.ftable td{padding:11px 12px;border-bottom:1px solid var(--rule);vertical-align:top}
.ftable tbody tr:hover{background:var(--paper-2)}
.ftable .st{font-weight:600;color:var(--ink);white-space:nowrap}
.yn{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.04em}
.yn.y{color:var(--accent-2)} .yn.n,.yn.d{color:var(--faint)}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.tag{font-size:11.5px;color:var(--ink-2);background:var(--paper-2);border:1px solid var(--rule);border-radius:3px;padding:2px 8px;white-space:nowrap}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media(max-width:760px){.ftable{font-size:.86rem}.ftable td,.ftable thead th{padding:9px 8px}}

.callout{background:var(--paper-2);border:1px solid var(--rule);border-left:3px solid var(--accent);border-radius:5px;padding:24px 26px;margin:6px 0}
.callout .k{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);margin-bottom:10px}
.callout h3{font-size:1.35rem;margin:0 0 8px;font-family:"Instrument Serif",serif;font-weight:400}
.callout p{color:var(--ink-2);margin:0 0 0;max-width:70ch}
.callout p+p{margin-top:10px}

.theory{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:24px 0;border-top:1px solid var(--rule)}
.theory:first-of-type{border-top:none}
.theory__n{font-family:"Instrument Serif",serif;font-size:1.7rem;color:var(--accent);line-height:1}
.theory h3{font-size:1.4rem;margin:0 0 6px}
.theory p{color:var(--ink-2);margin:0;max-width:68ch}
.theory .lede2{color:var(--ink);font-style:italic;margin-bottom:8px;font-family:"Instrument Serif",serif;font-size:1.15rem}
@media(max-width:560px){.theory{grid-template-columns:1fr;gap:6px}}

.cta-band{padding:60px 0;border-top:1px solid var(--rule);text-align:center}
.cta-band h2{font-size:clamp(2rem,4vw,3rem);line-height:1.04;margin:0 0 10px}
.cta-band p{color:var(--ink-2);max-width:52ch;margin:0 auto 26px}
.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.note{font-size:.88rem;color:var(--slate);line-height:1.55;max-width:80ch}
.note strong{color:var(--ink)}
.list-clean{list-style:none;margin:0;padding:0}
.list-clean li{padding:12px 0;border-top:1px solid var(--rule);display:grid;grid-template-columns:minmax(0,210px) 1fr;gap:8px 22px}
.list-clean li:first-child{border-top:none}
.list-clean dt,.list-clean .lt{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2);padding-top:2px}
.list-clean .ld{color:var(--ink-2)}
@media(max-width:620px){.list-clean li{grid-template-columns:1fr;gap:4px}}

/* hide Part 107 + Legal in nav when Spanish (navhide via lang) */
html[lang="es"] .nav__mid a[href*="#part107"],html[lang="es"] .mnav a[href*="#part107"]{display:none!important}

/* skip-to-content link (a11y) */
.skip{position:absolute;left:-9999px;top:0;z-index:300;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 6px 0;font-size:14px;text-decoration:none}
.skip:focus{left:0}