/* ============================================================
   BlackTop Enduro — site styles
   Palette: asphalt black, aggregate grey, bone, ember accent
   Type: Saira Condensed (display) / IBM Plex Sans (body) / IBM Plex Mono (specs)
   ============================================================ */

:root{
  --asphalt:#14110F;
  --charcoal:#211D1A;
  --charcoal-2:#2C2723;
  --aggregate:#6B635C;
  --aggregate-lt:#9A9089;
  --bone:#ECE7DF;
  --bone-dim:#D9D2C7;
  --bone-card:#F4F1EA;
  --ember:#E07B2C;
  --ember-deep:#BE5C14;
  --ember-ink:#A8480C;
  --line-on-dark:rgba(236,231,223,0.13);
  --line-on-light:rgba(20,17,15,0.12);

  --font-display:"Saira Condensed","Arial Narrow",sans-serif;
  --font-body:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --maxw:1180px;
  --gutter:clamp(20px,5vw,64px);
  --radius:3px;
}

/* ---------- reset ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--font-body);
  background:var(--bone);
  color:var(--asphalt);
  line-height:1.6;
  font-size:clamp(16px,1.05vw,17px);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}

/* ---------- running-bond block motif ---------- */
/* offset blocks with faint joint lines, drawn as an inline SVG pattern */
.blockfield{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='80' viewBox='0 0 160 80'%3E%3Cg fill='none' stroke='%23ECE7DF' stroke-opacity='0.10' stroke-width='1.4'%3E%3Crect x='0' y='0' width='80' height='40'/%3E%3Crect x='80' y='0' width='80' height='40'/%3E%3Crect x='-40' y='40' width='80' height='40'/%3E%3Crect x='40' y='40' width='80' height='40'/%3E%3Crect x='120' y='40' width='80' height='40'/%3E%3C/g%3E%3C/svg%3E");
  background-size:160px 80px;
}

/* ---------- layout helpers ---------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,8vw,108px)}
.section--tight{padding-block:clamp(40px,6vw,72px)}
.dark{background:var(--asphalt);color:var(--bone)}
.charcoal{background:var(--charcoal);color:var(--bone)}
.bone{background:var(--bone);color:var(--asphalt)}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ember);
  display:inline-block;
  margin-bottom:1.1rem;
}
.dark .eyebrow,.charcoal .eyebrow{color:var(--ember)}

h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.02;letter-spacing:.005em}
h1{font-size:clamp(2.7rem,7.5vw,5.4rem);text-transform:uppercase;font-weight:800}
h2{font-size:clamp(2rem,4.4vw,3.4rem);text-transform:uppercase}
h3{font-size:clamp(1.35rem,2.2vw,1.7rem)}
.lede{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--aggregate);max-width:60ch}
.dark .lede,.charcoal .lede{color:var(--bone-dim)}
p{max-width:64ch}
p+p{margin-top:1rem}
.section h2+.lede,.section .eyebrow+h2{margin-top:0}
h2+.lede{margin-top:1.1rem}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--font-display);font-weight:700;text-transform:uppercase;
  letter-spacing:.04em;font-size:1.05rem;
  padding:.85em 1.5em;border-radius:var(--radius);
  border:2px solid transparent;cursor:pointer;
  transition:transform .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
}
.btn--primary{background:var(--ember);color:#1a0f06}
.btn--primary:hover{background:#f08c3e;transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:currentColor;color:inherit}
.btn--ghost:hover{background:rgba(224,123,44,.14);border-color:var(--ember);color:var(--ember);transform:translateY(-2px)}
.dark .btn--ghost:hover,.charcoal .btn--ghost:hover{color:var(--ember)}
.btn-row{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:1.8rem}

:focus-visible{outline:3px solid var(--ember);outline-offset:3px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(20,17,15,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-on-dark);
  color:var(--bone);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-block:.85rem}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:800;
  text-transform:uppercase;letter-spacing:.04em;font-size:1.35rem;color:var(--bone)}
.brand em{font-style:normal;color:var(--ember)}
.brand-mark{display:grid;grid-template-columns:repeat(3,7px);grid-auto-rows:5px;gap:1.6px}
.brand-mark i{background:var(--bone-dim);display:block}
.brand-mark i:nth-child(4),.brand-mark i:nth-child(5){background:var(--ember)}

.site-nav{display:flex;align-items:center;gap:1.7rem}
.site-nav a{font-size:.92rem;font-weight:500;color:var(--bone-dim);transition:color .15s}
.site-nav a:hover{color:var(--bone)}
.site-nav .nav-cta{
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.05em;
  font-weight:700;color:#1a0f06;background:var(--ember);
  padding:.5em 1em;border-radius:var(--radius);font-size:.95rem;
}
.site-nav .nav-cta:hover{background:#f08c3e;color:#1a0f06}
.nav-toggle{display:none;background:none;border:0;color:var(--bone);font-size:1.7rem;line-height:1;cursor:pointer}

@media (max-width:860px){
  .nav-toggle{display:block}
  .site-nav{
    position:fixed;inset:60px 0 auto 0;flex-direction:column;align-items:flex-start;
    gap:0;background:var(--charcoal);padding:1rem var(--gutter) 1.6rem;
    border-bottom:1px solid var(--line-on-dark);
    transform:translateY(-120%);transition:transform .28s ease;
  }
  .site-nav.open{transform:translateY(0)}
  .site-nav a{padding:.8rem 0;width:100%;border-bottom:1px solid var(--line-on-dark);font-size:1.05rem}
  .site-nav .nav-cta{margin-top:.9rem;padding:.7em 1.2em}
}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--asphalt);color:var(--bone);overflow:hidden}
.hero--photo{
  background-image:
    linear-gradient(90deg, rgba(18,15,13,.90), rgba(18,15,13,.52) 58%, rgba(18,15,13,.30)),
    linear-gradient(0deg, rgba(18,15,13,.78), rgba(18,15,13,.12) 42%),
    url("hero-facility.jpg");
  background-size:cover;background-position:center 40%;background-repeat:no-repeat;
}
.hero .wrap{position:relative;padding-block:clamp(64px,12vw,150px)}
.hero h1{max-width:16ch}
.hero .lede{margin-top:1.4rem;color:var(--bone-dim)}
.hero .ember-line{color:var(--ember)}
.hero-sub{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em;
  color:var(--aggregate-lt);margin-top:2.4rem;max-width:70ch;line-height:1.7}

/* ---------- generic grid of cards ---------- */
.grid{display:grid;gap:clamp(14px,1.6vw,20px)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
@media (max-width:820px){.grid--3{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.grid--2,.grid--3{grid-template-columns:1fr}}

.card{
  background:var(--bone-card);border:1px solid var(--line-on-light);
  border-radius:var(--radius);padding:clamp(20px,2.4vw,30px);
  border-top:3px solid var(--ember);
  transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(20,17,15,.16)}
.card h3{margin-bottom:.5rem}
.card p{color:var(--aggregate);font-size:.98rem}
.dark .card,.charcoal .card{background:var(--charcoal-2);border-color:var(--line-on-dark);color:var(--bone)}
.dark .card p,.charcoal .card p{color:var(--bone-dim)}

/* ---------- numbered process ---------- */
.steps{counter-reset:step;display:grid;gap:1.4rem}
.step{display:grid;grid-template-columns:auto 1fr;gap:1.2rem;align-items:start;
  padding-bottom:1.4rem;border-bottom:1px solid var(--line-on-dark)}
.charcoal .step,.dark .step{border-color:var(--line-on-dark)}
.bone .step{border-color:var(--line-on-light)}
.step:last-child{border-bottom:0}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-mono);color:var(--ember);font-size:1.05rem;font-weight:500;
  padding-top:.2rem}
.step h3{margin-bottom:.35rem}

/* ---------- spec chips ---------- */
.specs{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.6rem}
.spec{font-family:var(--font-mono);font-size:.8rem;letter-spacing:.03em;
  border:1px solid var(--line-on-dark);padding:.55em .9em;border-radius:var(--radius);
  color:var(--bone-dim)}
.bone .spec{border-color:var(--line-on-light);color:var(--aggregate)}
.spec b{color:var(--ember);font-weight:600}

/* ---------- century bar (lifespan visual) ---------- */
.lifespan{display:grid;gap:1.1rem;margin-top:2rem}
.life-row{display:grid;grid-template-columns:minmax(120px,160px) 1fr;gap:1rem;align-items:center}
.life-label{font-family:var(--font-mono);font-size:.82rem;color:var(--bone-dim)}
.bone .life-label{color:var(--aggregate)}
.life-track{position:relative;height:34px;background:rgba(107,99,92,.18);border-radius:var(--radius);overflow:hidden}
.life-fill{height:100%;display:flex;align-items:center;justify-content:flex-end;
  padding-right:.7rem;font-family:var(--font-mono);font-size:.82rem;color:#1a0f06;
  background:var(--aggregate);min-width:42px;
  animation:grow 1.1s cubic-bezier(.2,.7,.2,1) both}
.life-fill--win{background:var(--ember);font-weight:600}
@keyframes grow{from{transform:scaleX(.02);transform-origin:left}to{transform:scaleX(1)}}
@media (prefers-reduced-motion:reduce){.life-fill{animation:none}}
@media (max-width:560px){.life-row{grid-template-columns:1fr}.life-label{margin-bottom:-.4rem}}

/* ---------- comparison table ---------- */
.table-wrap{overflow-x:auto;margin-top:1.8rem;border:1px solid var(--line-on-light);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;min-width:560px;background:var(--bone-card)}
th,td{text-align:left;padding:.9rem 1.1rem;border-bottom:1px solid var(--line-on-light);font-size:.96rem}
thead th{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--aggregate);background:#efeae2}
tbody tr:last-child td{border-bottom:0}
tr.win td{background:rgba(224,123,44,.1)}
tr.win td:first-child{font-weight:600;border-left:3px solid var(--ember)}
td.num{font-family:var(--font-mono)}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:28px}}
.split .media{aspect-ratio:4/3;border-radius:var(--radius);border:1px solid var(--line-on-dark);
  background:var(--charcoal);position:relative;overflow:hidden}
.media .ph{position:absolute;inset:0;display:flex;align-items:flex-end;padding:1rem;
  font-family:var(--font-mono);font-size:.72rem;color:var(--aggregate-lt);letter-spacing:.04em}

/* ---------- callout band ---------- */
.band{background:var(--ember);color:#1a0f06}
.band h2{color:#1a0f06}
.band .lede{color:#3a230d}
.band .btn--primary{background:var(--asphalt);color:var(--bone)}
.band .btn--primary:hover{background:#000}

/* ---------- key question pull ---------- */
.pull{border-left:3px solid var(--ember);padding:.4rem 0 .4rem 1.4rem;margin:1.8rem 0;
  font-family:var(--font-display);text-transform:uppercase;font-weight:700;
  font-size:clamp(1.4rem,3vw,2.1rem);line-height:1.1;letter-spacing:.01em}

/* ---------- form ---------- */
.form{display:grid;gap:1.1rem;max-width:640px;margin-top:2rem}
.field{display:grid;gap:.4rem}
.field label{font-family:var(--font-mono);font-size:.76rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--bone-dim)}
.bone .field label{color:var(--aggregate)}
.field input,.field select,.field textarea{
  font-family:var(--font-body);font-size:1rem;padding:.75em .9em;
  background:var(--bone-card);border:1px solid var(--aggregate);border-radius:var(--radius);
  color:var(--asphalt)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ember)}
.field--check{grid-template-columns:auto 1fr;align-items:start;gap:.7rem}
.field--check input{width:1.2rem;height:1.2rem;margin-top:.2rem}
.field--check label{text-transform:none;letter-spacing:0;font-family:var(--font-body);font-size:.98rem}
.form-note{font-size:.9rem;color:var(--aggregate);max-width:60ch}

/* ---------- calculator ---------- */
.calc{background:var(--charcoal-2);border:1px solid var(--line-on-dark);border-radius:var(--radius);
  padding:clamp(22px,3vw,36px);margin-top:2rem}
.calc .row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
@media (max-width:560px){.calc .row{grid-template-columns:1fr}}
.calc output{display:block}
.calc-result{margin-top:1.8rem;display:grid;gap:.7rem}
.calc-line{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;
  padding:.7rem 0;border-bottom:1px solid var(--line-on-dark)}
.calc-line span:first-child{color:var(--bone-dim)}
.calc-line .val{font-family:var(--font-mono);font-size:1.15rem;color:var(--bone)}
.calc-line.win .val{color:var(--ember);font-weight:600}
.calc-illus{font-family:var(--font-mono);font-size:.72rem;color:var(--aggregate-lt);margin-top:1.1rem;letter-spacing:.02em}

/* ---------- footer ---------- */
.site-footer{background:#0E0C0A;color:var(--bone-dim);padding-block:clamp(40px,6vw,64px);font-size:.92rem}
.site-footer .wrap{display:grid;gap:1.4rem}
.foot-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1.4rem;align-items:flex-start}
.foot-brand{font-family:var(--font-display);font-weight:800;text-transform:uppercase;
  letter-spacing:.04em;font-size:1.5rem;color:var(--bone)}
.foot-brand em{font-style:normal;color:var(--ember)}
.foot-links{display:flex;flex-wrap:wrap;gap:1.1rem}
.foot-links a:hover{color:var(--ember)}
.foot-legal{font-size:.82rem;color:var(--aggregate);max-width:80ch;line-height:1.7;
  border-top:1px solid var(--line-on-dark);padding-top:1.3rem}
.foot-contact{font-family:var(--font-mono);font-size:.82rem;color:var(--bone-dim)}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- misc ---------- */
.note{font-family:var(--font-mono);font-size:.74rem;color:var(--aggregate);
  background:rgba(224,123,44,.08);border:1px dashed var(--ember);
  padding:.8em 1em;border-radius:var(--radius);margin-top:1.4rem;letter-spacing:.01em;line-height:1.6}
.stack>*+*{margin-top:1.1rem}
.mt-s{margin-top:1.2rem}.mt-m{margin-top:2rem}
ul.ticks{list-style:none;margin-top:1.2rem;display:grid;gap:.7rem}
ul.ticks li{padding-left:1.6rem;position:relative;color:var(--aggregate);max-width:64ch}
.dark ul.ticks li,.charcoal ul.ticks li{color:var(--bone-dim)}
ul.ticks li::before{content:"▰";position:absolute;left:0;color:var(--ember);font-size:.7rem;top:.35rem}

/* ---------- facility figure ---------- */
.figure{margin-top:2rem;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-on-light)}
.dark .figure,.charcoal .figure{border-color:var(--line-on-dark)}
.figure img{width:100%;height:auto;display:block}
.figure figcaption{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.04em;
  color:var(--aggregate-lt);padding:.75rem 1rem;background:var(--charcoal-2)}

/* ---------- 2027 badge ---------- */
.badge{display:inline-flex;align-items:center;gap:.5em;font-family:var(--font-mono);
  font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ember);
  border:1px solid var(--ember);padding:.45em .85em;border-radius:var(--radius);margin-bottom:1.2rem}

/* ---------- proof callout (first floor) ---------- */
.proof{display:grid;grid-template-columns:auto 1fr;gap:1.4rem;align-items:start;
  background:var(--charcoal-2);border:1px solid var(--line-on-dark);border-left:3px solid var(--ember);
  border-radius:var(--radius);padding:clamp(20px,2.6vw,30px);margin-top:2rem}
.proof .mark{font-family:var(--font-display);font-weight:800;font-size:2.2rem;color:var(--ember);line-height:1}
.bone .proof{background:var(--bone-card);border-color:var(--line-on-light);border-left-color:var(--ember)}
@media (max-width:560px){.proof{grid-template-columns:1fr}}

/* ---------- queue / line steps ---------- */
.queue{display:grid;gap:1rem;margin-top:1.8rem}
.q-item{display:grid;grid-template-columns:auto 1fr;gap:1rem;align-items:baseline;
  padding:1rem 1.2rem;background:var(--bone-card);border:1px solid var(--line-on-light);border-radius:var(--radius)}
.dark .q-item,.charcoal .q-item{background:var(--charcoal-2);border-color:var(--line-on-dark)}
.q-when{font-family:var(--font-mono);font-size:.82rem;color:var(--ember);white-space:nowrap}

/* ---------- contrast: darker ember for text on LIGHT backgrounds ---------- */
.bone .eyebrow{color:var(--ember-ink)}
.bone .spec b{color:var(--ember-ink)}
.bone .q-when{color:var(--ember-ink)}
.bone .proof .mark{color:var(--ember-ink)}
.bone .btn--ghost:hover{color:var(--ember-ink);border-color:var(--ember-ink)}
.bone a.inline-ember{color:var(--ember-ink);font-weight:600}

/* ---------- cost-over-time slider tool ---------- */
.tool{background:var(--charcoal-2);border:1px solid var(--line-on-dark);border-radius:var(--radius);padding:clamp(22px,3vw,34px);margin-top:2rem}
.tool .row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
@media(max-width:560px){.tool .row{grid-template-columns:1fr}}
.tool-year{display:flex;align-items:baseline;gap:.6rem;margin:1.7rem 0 .5rem}
.tool-year b{font-family:var(--font-display);font-weight:800;font-size:2.6rem;color:var(--ember);line-height:1}
.tool-year span{font-family:var(--font-mono);font-size:.8rem;color:var(--bone-dim);letter-spacing:.06em}
.tool input[type=range]{width:100%;accent-color:var(--ember);height:30px;cursor:pointer}
.cost-bars{display:grid;gap:.9rem;margin-top:1.5rem}
.cost-bar{display:grid;grid-template-columns:minmax(110px,150px) 1fr auto;gap:.9rem;align-items:center}
.cb-label{font-family:var(--font-mono);font-size:.82rem;color:var(--bone-dim)}
.cb-track{height:30px;background:rgba(107,99,92,.20);border-radius:var(--radius);overflow:hidden}
.cb-fill{height:100%;width:0;background:var(--aggregate);border-radius:var(--radius);transition:width .12s linear}
.cb-fill.win{background:var(--ember)}
.cb-val{font-family:var(--font-mono);font-size:.92rem;color:var(--bone);white-space:nowrap}
.cb-val.win{color:var(--ember);font-weight:600}
.tool-msg{margin-top:1.5rem;color:var(--bone-dim);min-height:1.6em}
.tool-msg b{color:var(--ember)}
@media(max-width:560px){
  .cost-bar{grid-template-columns:1fr auto}
  .cb-track{grid-column:1/-1;order:3}
}

/* ---------- trust strip (validation) ---------- */
.trust{text-align:center}
.trust .eyebrow{display:block;margin-bottom:.8rem}
.trust-line{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.02em;
  font-size:clamp(1.1rem,2.2vw,1.55rem);color:var(--bone);max-width:none;margin:0 auto .9rem}
.trust-line b{color:var(--ember)}
.trust a{font-family:var(--font-mono);font-size:.82rem;color:var(--ember)}
.trust a:hover{text-decoration:underline}

/* ---------- responsive video ---------- */
.video-embed{position:relative;aspect-ratio:16/9;margin-top:2rem;border-radius:var(--radius);
  overflow:hidden;border:1px solid var(--line-on-light)}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-poster{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:1rem;text-decoration:none;color:var(--bone);
  background:linear-gradient(rgba(18,15,13,.45),rgba(18,15,13,.72)),var(--charcoal-2)}
.video-poster:hover{background:linear-gradient(rgba(18,15,13,.32),rgba(18,15,13,.6)),var(--charcoal-2)}
.video-play{width:66px;height:66px;border-radius:50%;background:var(--ember);color:#1a0f06;
  display:grid;place-items:center;font-size:1.5rem;padding-left:5px;transition:transform .15s ease}
.video-poster:hover .video-play{transform:scale(1.08)}
.video-cap{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.05em;font-size:1.05rem}

/* ---------- figure on light bg ---------- */
.figure--light{background:var(--bone-card)}
.figure--light img{padding:clamp(14px,2.5vw,30px)}
.figure--light figcaption{background:var(--bone-card);color:var(--aggregate);border-top:1px solid var(--line-on-light)}

/* ---------- sample highlight ---------- */
.sample-price{font-family:var(--font-display);font-weight:800;color:var(--ember);
  font-size:clamp(2.4rem,6vw,3.6rem);line-height:1;margin:.2rem 0 1rem}

/* ---------- small diagram figure (herringbone) ---------- */
.figure--diagram{max-width:430px;margin-inline:auto}
.figure--diagram img{width:100%;background:#fff}

/* ---------- trademark superscript ---------- */
.tm{font-size:.5em;vertical-align:.55em;line-height:0;font-weight:600;letter-spacing:0;margin-left:.04em}

/* ---------- interest page ---------- */
.optin{margin-top:.4rem;padding:1.1rem 1.2rem;border:1px solid var(--line-on-dark);border-radius:var(--radius);background:rgba(255,255,255,.03)}
.bone .optin{border-color:var(--line-on-light);background:var(--bone-card)}
.optin h4{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ember-ink);margin-bottom:.6rem}
.dark .optin h4,.charcoal .optin h4{color:var(--ember)}
.optin-row{display:flex;gap:.7rem;align-items:flex-start;cursor:pointer;font-family:var(--font-body)}
.optin-row input{margin-top:.2rem;width:1.2rem;height:1.2rem;accent-color:var(--ember);flex:none}
.optin-row span{color:var(--aggregate);font-size:.96rem}
.dark .optin-row span,.charcoal .optin-row span{color:var(--bone-dim)}
.zone-price{font-family:var(--font-display);font-weight:800;color:var(--ember);font-size:2.1rem;line-height:1;margin:.15rem 0 .5rem}
.zone-price small{font-size:.7rem;font-weight:600;color:var(--bone-dim);letter-spacing:.03em;text-transform:uppercase}

/* ---------- segment fork (homepage) ---------- */
.fork-eyebrow{display:block;text-align:center;margin-bottom:1.3rem}
.fork{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
@media(max-width:640px){.fork{grid-template-columns:1fr}}
.fork-card{display:flex;flex-direction:column;text-decoration:none;color:var(--asphalt);transition:transform .15s ease,box-shadow .15s ease}
.fork-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.10)}
.fork-btn{margin-top:1.1rem;align-self:flex-start}
.fork-card .fork-go{display:inline-block;margin-top:.7rem;font-family:var(--font-mono);font-size:.8rem;letter-spacing:.04em;color:var(--ember-ink);font-weight:600}

/* ---------- get started chooser ---------- */
.chooser{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
@media(max-width:760px){.chooser{grid-template-columns:1fr 1fr}}
@media(max-width:430px){.chooser{grid-template-columns:1fr}}
.chooser .fork-card{padding:1.3rem 1.2rem}
.chooser .fork-card .fork-go{color:var(--ember)}
section[id]{scroll-margin-top:90px}