/* Guide library signup form (name, email, phone, consent).
   Shared by /build (hero + footer card) and the homepage #guide section. */
.gf{--gf-ink:#0B0A08;--gf-bone:#EDE7D8;--gf-mute:#6d6a5e;--gf-line:rgba(11,10,8,.13);--gf-bad:#b2431f;--gf-ease:cubic-bezier(.22,1,.36,1);
  --gf-font:var(--text,'InstrumentSansVar','Helvetica Neue',Arial,sans-serif);width:100%;max-width:480px;margin:28px auto 0;text-align:left;font-family:var(--gf-font)}
.gf-ask{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 12px;font:700 15px/1.2 var(--gf-font);color:var(--gf-ink)}
.gf-ask small{font:600 11px/1 var(--gf-font);letter-spacing:.14em;text-transform:uppercase;color:var(--gf-mute)}
.gf-stack{position:relative;background:#fff;border:2px solid var(--gf-ink);border-radius:22px;overflow:hidden;
  box-shadow:0 18px 40px -18px rgba(11,10,8,.45),0 2px 0 rgba(11,10,8,.04);transition:box-shadow .4s var(--gf-ease),transform .4s var(--gf-ease)}
.gf-stack:focus-within{box-shadow:0 22px 50px -16px rgba(11,10,8,.55),0 0 0 6px rgba(11,10,8,.07);transform:translateY(-1px)}
.gf-f{position:relative;display:flex;flex-direction:column;justify-content:center;height:66px;padding:0 20px 0 52px;cursor:text;transition:background .3s}
.gf-f + .gf-f{border-top:1px solid var(--gf-line)}
.gf-f::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--gf-ink);transform:scaleY(0);transition:transform .45s var(--gf-ease)}
.gf-f:focus-within{background:#FBF8F1}
.gf-f:focus-within::before{transform:none}
.gf-f svg{position:absolute;left:20px;top:50%;width:18px;height:18px;margin-top:-9px;fill:none;stroke:var(--gf-ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;opacity:.55;transition:opacity .3s}
.gf-f:focus-within svg{opacity:1}
.gf-l{font:700 10.5px/1 var(--gf-font);letter-spacing:.14em;text-transform:uppercase;color:var(--gf-mute);transition:color .3s}
.gf-f input{width:100%;min-width:0;border:0;background:transparent;outline:0;padding:6px 0 0;margin:0;font:500 17px/1.2 var(--gf-font);color:var(--gf-ink);border-radius:0;-webkit-appearance:none;appearance:none}
.gf-f input::placeholder{color:#a6a193}
.gf-f.is-bad{background:#fdf1ec}
.gf-f.is-bad::before{background:var(--gf-bad);transform:none}
.gf-f.is-bad .gf-l{color:var(--gf-bad)}
.gf-hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}

/* consent */
.gf-ok{position:relative;display:grid;grid-template-columns:24px 1fr;gap:12px;align-items:start;margin:16px 2px 0;cursor:pointer;-webkit-tap-highlight-color:transparent}
.gf-ok input{position:absolute;opacity:0;width:24px;height:24px;margin:0;cursor:pointer}
.gf-box{width:24px;height:24px;border:2px solid var(--gf-ink);border-radius:7px;background:#fff;display:grid;place-items:center;transition:background .25s,transform .35s var(--gf-ease),border-color .25s}
.gf-box svg{width:14px;height:14px;fill:none;stroke:var(--gf-bone);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:20;stroke-dashoffset:20;transition:stroke-dashoffset .35s var(--gf-ease) .05s}
.gf-ok input:checked + .gf-box{background:var(--gf-ink);transform:scale(1.06)}
.gf-ok input:checked + .gf-box svg{stroke-dashoffset:0}
.gf-ok input:focus-visible + .gf-box{outline:2px solid var(--gf-ink);outline-offset:3px}
.gf-ok-t{font-size:13px;line-height:1.45;color:#4a473e}
.gf-ok.is-bad .gf-box{border-color:var(--gf-bad);animation:gfshake .45s var(--gf-ease)}
.gf-ok.is-bad .gf-ok-t{color:var(--gf-bad)}

/* button */
.gf-go{position:relative;display:flex;align-items:center;justify-content:space-between;width:100%;height:62px;margin-top:18px;padding:0 7px 0 24px;border:0;border-radius:99px;
  background:var(--gf-ink);color:var(--gf-bone);font:700 16px/1 var(--gf-font);letter-spacing:.01em;cursor:pointer;overflow:hidden;
  box-shadow:0 18px 36px -16px rgba(11,10,8,.6);transition:transform .35s var(--gf-ease),box-shadow .35s var(--gf-ease)}
.gf-go:hover{transform:translateY(-2px);box-shadow:0 24px 44px -16px rgba(11,10,8,.65)}
.gf-go:active{transform:translateY(0) scale(.99)}
.gf-go::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(237,231,216,.14) 50%,transparent 70%);transform:translateX(-120%);transition:transform .9s var(--gf-ease)}
.gf-go:hover::after{transform:translateX(120%)}
.gf-go-t{position:relative;z-index:1;transition:opacity .3s}
.gf-go-i{position:relative;z-index:1;flex:none;width:48px;height:48px;border-radius:50%;background:var(--gf-bone);color:var(--gf-ink);display:grid;place-items:center;transition:transform .45s var(--gf-ease)}
.gf-go:hover .gf-go-i{transform:rotate(-45deg)}
.gf-go-i svg{grid-area:1/1;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:opacity .3s,transform .45s var(--gf-ease)}
.gf-go-i .chk{opacity:0;transform:scale(.4)}
.gf-spin{grid-area:1/1;width:20px;height:20px;border-radius:50%;border:2px solid rgba(11,10,8,.2);border-top-color:var(--gf-ink);opacity:0;animation:gfspin .8s linear infinite}
@keyframes gfspin{to{transform:rotate(360deg)}}
@keyframes gfshake{20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}
.gf.is-busy .gf-go-i .arr{opacity:0}
.gf.is-busy .gf-spin{opacity:1}
.gf.is-busy .gf-go{pointer-events:none}
.gf.is-busy .gf-stack{opacity:.7}
.gf.is-done .gf-go{background:#2a2722;pointer-events:none}
.gf.is-done .gf-go-i{transform:none}
.gf.is-done .gf-go-i .arr,.gf.is-done .gf-spin{opacity:0}
.gf.is-done .gf-go-i .chk{opacity:1;transform:none}
.gf.is-err .gf-stack{animation:gfshake .45s var(--gf-ease)}

.gf-note{margin:12px 2px 0;font-size:13.5px;color:var(--gf-mute);min-height:1.2em}
.gf.is-err .gf-note{color:var(--gf-bad);font-weight:600}
.gf.is-done .gf-note{color:var(--gf-ink);font-weight:600}

/* dark backgrounds (footer card on /build, homepage card) */
.gf.dark .gf-ask{color:var(--gf-bone)}
.gf.dark .gf-ask small{color:#8f8a7c}
.gf.dark .gf-stack{background:var(--gf-bone);border-color:var(--gf-bone);box-shadow:0 18px 50px -20px rgba(0,0,0,.8)}
.gf.dark .gf-stack:focus-within{box-shadow:0 22px 56px -18px rgba(0,0,0,.85),0 0 0 6px rgba(237,231,216,.12)}
.gf.dark .gf-f:focus-within{background:#F6F2E9}
.gf.dark .gf-f.is-bad{background:#f6e3da}
.gf.dark .gf-f input::placeholder{color:#9a958a}
.gf.dark .gf-box{background:transparent;border-color:var(--gf-bone)}
.gf.dark .gf-box svg{stroke:var(--gf-ink)}
.gf.dark .gf-ok input:checked + .gf-box{background:var(--gf-bone)}
.gf.dark .gf-ok input:focus-visible + .gf-box{outline-color:var(--gf-bone)}
.gf.dark .gf-ok-t{color:#c9c3b3}
.gf.dark .gf-ok.is-bad .gf-box{border-color:#f0a487}
.gf.dark .gf-ok.is-bad .gf-ok-t{color:#f0a487}
.gf.dark .gf-go{background:var(--gf-bone);color:var(--gf-ink);box-shadow:0 18px 40px -18px rgba(0,0,0,.8)}
.gf.dark .gf-go::after{background:linear-gradient(100deg,transparent 30%,rgba(11,10,8,.08) 50%,transparent 70%)}
.gf.dark .gf-go-i{background:var(--gf-ink);color:var(--gf-bone)}
.gf.dark .gf-spin{border-color:rgba(237,231,216,.25);border-top-color:var(--gf-bone)}
.gf.dark.is-done .gf-go{background:#d8d1c0}
.gf.dark .gf-note{color:#8f8a7c}
.gf.dark.is-err .gf-note{color:#f0a487}
.gf.dark.is-done .gf-note{color:var(--gf-bone)}

@media (max-width:420px){
  .gf-f{height:62px;padding:0 16px 0 46px}
  .gf-f svg{left:16px}
  .gf-go{height:58px;padding-left:20px;font-size:15.5px}
  .gf-go-i{width:44px;height:44px}
}
@media (prefers-reduced-motion:reduce){
  .gf-stack,.gf-f::before,.gf-go,.gf-go::after,.gf-go-i,.gf-box,.gf-box svg{transition:none}
  .gf.is-err .gf-stack,.gf-ok.is-bad .gf-box{animation:none}
}