/* ==========================================================
   CIRCA·24 · stylesheet
   Two formulas. One considered routine.
   ========================================================== */

:root{
  /* surfaces */
  --ivory:     #f3eee5;
  --ivory-2:   #ebe5d9;
  --paper:     #faf7f1;
  --ink:       #181a26;
  --ink-2:     #4b4c5a;
  --ink-3:     #8a8b94;
  --line:      rgba(24,26,38,.10);
  --line-2:    rgba(24,26,38,.20);

  /* earthy accents */
  --day:       #d96a2c;
  --day-deep:  #b85520;
  --day-soft:  #f6e4d4;
  --night:     #2b3346;
  --night-2:   #4a5872;
  --night-deep:#171b27;
  --night-soft:#dde0e8;
  --night-text:#c9ccd6;
  --night-mute:#8f95a6;
  --sage:      #6f7f6a;

  /* type */
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  /* layout */
  --max: 1200px;
  --pad: clamp(20px, 4.5vw, 56px);
  --r-sm: 12px; --r-md: 18px; --r-lg: 28px; --r-xl: 36px;

  /* motion */
  --ease: cubic-bezier(.2,.7,.2,1);
  --t-fast: .2s var(--ease);
  --t-med:  .45s var(--ease);
}

*,*::before,*::after{ box-sizing:border-box }
html,body{ margin:0; padding:0 }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100% }
body{
  font-family:var(--sans);
  background:var(--ivory);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img,svg,picture{ display:block; max-width:100% }
[hidden]{ display:none !important }
a{ color:inherit; text-decoration:none }
button,input{ font:inherit; color:inherit }
button{ background:none; border:0; cursor:pointer }
fieldset{ border:0; padding:0; margin:0; min-width:0 }
legend{ padding:0 }
::selection{ background:var(--ink); color:var(--ivory) }
:focus-visible{ outline:2px solid var(--day); outline-offset:3px; border-radius:6px }

.wrap{ max-width:var(--max); margin-inline:auto; padding-inline:var(--pad) }

.skip{
  position:absolute; left:12px; top:-60px; z-index:100;
  padding:10px 14px; background:var(--ink); color:var(--ivory);
  border-radius:999px; font-size:13px; transition:top var(--t-fast);
}
.skip:focus{ top:12px }

/* ---------- type scale ---------- */
.kicker{
  font-family:var(--mono);
  font-size:11px; letter-spacing:.2em; text-transform:uppercase;
  color:var(--ink-3); margin:0 0 18px;
}
.kicker--light{ color:var(--night-mute) }
.h2{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(36px, 5.4vw, 66px);
  line-height:1.02; letter-spacing:-.025em;
  margin:0 0 18px; color:var(--ink);
  text-wrap:balance;
}
.h2 em{ font-style:italic; font-weight:400 }
.h2--light{ color:var(--ivory) }
.section__intro{ max-width:720px; margin:0 0 clamp(36px, 5vw, 60px) }
.section__sub{
  font-size:clamp(16px, 1.3vw, 18px); line-height:1.6;
  color:var(--ink-2); margin:0; max-width:560px;
}

/* ---------- buttons ---------- */
.btn{
  position:relative; isolation:isolate; overflow:hidden;
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:14px 22px; border-radius:999px;
  font-size:14px; font-weight:600; letter-spacing:.01em; white-space:nowrap;
  transition:transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  -webkit-tap-highlight-color:transparent;
}
.btn--lg{ padding:18px 28px; font-size:15px }
.btn--ink{ background:var(--ink); color:var(--ivory); box-shadow:0 10px 30px -14px rgba(24,26,38,.5) }
.btn--ink:hover{ transform:translateY(-2px); box-shadow:0 18px 36px -16px rgba(24,26,38,.55) }
.btn--day{ background:var(--day); color:#fff; box-shadow:0 12px 34px -14px rgba(217,106,44,.7) }
.btn--day:hover{ background:var(--day-deep); transform:translateY(-2px) }
.btn::after{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(115deg, transparent 35%, rgba(255,255,255,.22) 50%, transparent 65%);
  transform:translateX(-120%); transition:transform .8s var(--ease);
}
.btn:hover::after{ transform:translateX(120%) }
.btn:active{ transform:translateY(0) scale(.985) }
.btn svg{ transition:transform var(--t-fast) }
.btn:hover svg{ transform:translateX(3px) }

/* ==========================================================
   NAV
   ========================================================== */
.nav{
  position:sticky; top:0; z-index:60;
  display:flex; align-items:center; gap:28px;
  padding:14px var(--pad);
  background:rgba(243,238,229,.78);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-med), background var(--t-med), box-shadow var(--t-med);
}
.nav--scrolled{
  background:rgba(243,238,229,.92);
  border-bottom-color:var(--line);
  box-shadow:0 8px 30px -20px rgba(24,26,38,.25);
}
.brand{ display:inline-flex; align-items:center; gap:10px }
.brand__mark{ flex-shrink:0; transition:transform .6s var(--ease) }
.brand:hover .brand__mark{ transform:rotate(180deg) }
.brand__word{
  font-family:var(--serif); font-weight:600; font-size:22px; letter-spacing:-.01em; color:var(--ink);
}
.brand__word sup{ font-family:var(--mono); font-weight:500; font-size:10px; color:var(--ink-3); margin-left:2px; vertical-align:super }
.nav__menu{ display:flex; gap:26px; margin-left:12px; font-size:14px; font-weight:500 }
.nav__menu a{ position:relative; color:var(--ink-2); transition:color var(--t-fast); padding:4px 0 }
.nav__menu a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:1.5px;
  background:var(--ink); transform:scaleX(0); transform-origin:left; transition:transform var(--t-med);
}
.nav__menu a:hover{ color:var(--ink) }
.nav__menu a:hover::after{ transform:scaleX(1) }
.nav__cta{
  margin-left:auto; padding:10px 16px; border-radius:999px;
  background:var(--ink); color:var(--ivory); font-size:13px; font-weight:600;
  transition:transform var(--t-fast), background var(--t-fast);
}
.nav__cta:hover{ transform:translateY(-1px); background:#0d0e18 }
@media (max-width:900px){
  .nav__menu{ display:none }
  .nav{ padding:12px var(--pad) }
}

/* ==========================================================
   1 · HERO
   ========================================================== */
.hero{
  position:relative; isolation:isolate;
  padding:clamp(28px, 5vw, 72px) var(--pad) clamp(48px, 7vw, 96px);
  overflow:hidden;
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(60% 50% at 8% 0%, rgba(217,106,44,.12), transparent 70%),
    radial-gradient(50% 50% at 100% 100%, rgba(43,51,70,.14), transparent 70%);
}
.hero__grid{
  max-width:var(--max); margin-inline:auto;
  display:grid; grid-template-columns:1fr 1.05fr; gap:clamp(28px, 5vw, 72px);
  align-items:center;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:10px; margin:0 0 22px;
  padding:7px 14px 7px 10px; border-radius:999px;
  background:rgba(255,255,255,.5); border:1px solid var(--line);
  font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-2);
}
.eyebrow__dot{ width:7px; height:7px; border-radius:50%; background:var(--day); box-shadow:0 0 0 0 rgba(217,106,44,.5); animation:ping 2.2s ease-out infinite }
@keyframes ping{ 70%{ box-shadow:0 0 0 8px rgba(217,106,44,0) } 100%{ box-shadow:0 0 0 0 rgba(217,106,44,0) } }

.hero__h1{
  font-family:var(--serif); font-weight:500;
  font-size:clamp(42px, 5.3vw, 76px);
  line-height:.98; letter-spacing:-.03em;
  margin:0 0 24px; color:var(--ink);
}
.hero__h1 .line{ display:block; overflow:hidden; padding-bottom:.06em; margin-bottom:-.06em }
.hero__h1 .line > *{ display:inline-block }
.hero__h1 em{ font-style:italic; font-weight:400 }
.hero__h1 em.day{ color:var(--day) }
.hero__h1 em.night{ color:var(--night-2) }
.hero__lead{
  font-size:clamp(16px, 1.35vw, 19px); line-height:1.6; color:var(--ink-2);
  max-width:520px; margin:0 0 30px; text-wrap:pretty;
}
.hero__actions{ display:flex; flex-direction:column; align-items:flex-start; gap:14px }
.hero__note{ margin:0; font-size:13.5px; color:var(--ink-3) }

.hero__visual{ margin:0; position:relative }
.frame{
  position:relative; overflow:hidden;
  border-radius:var(--r-lg);
  background:#e6e1d8;
  box-shadow:0 40px 80px -40px rgba(24,26,38,.45), 0 10px 30px -20px rgba(24,26,38,.25);
  transform:translateZ(0);
}
.frame img{ width:100%; height:auto; aspect-ratio:1557/1010; object-fit:cover; transform:scale(1.02); transition:transform 1.2s var(--ease) }
.frame:hover img{ transform:scale(1.045) }
.frame__tag{
  position:absolute; bottom:14px;
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 12px; border-radius:999px;
  background:rgba(250,247,241,.82); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  font-family:var(--mono); font-size:10.5px; letter-spacing:.16em; color:var(--ink);
  box-shadow:0 6px 18px -8px rgba(24,26,38,.35);
  opacity:0; transform:translateY(8px); transition:opacity .6s var(--ease) .9s, transform .6s var(--ease) .9s;
}
.frame__tag i{ width:8px; height:8px; border-radius:50% }
.frame__tag--day{ left:14px } .frame__tag--day i{ background:var(--day) }
.frame__tag--night{ right:14px } .frame__tag--night i{ background:var(--night-2) }
.frame__tag--night{ transition-delay:1.05s }
.is-loaded .frame__tag{ opacity:1; transform:none }
.hero__caption{
  margin:16px 0 0; text-align:center;
  font-family:var(--serif); font-style:italic; font-size:16px; color:var(--ink-3);
}

/* hero entrance */
.hero__h1 .line > *{ transform:translateY(110%); opacity:0; animation:rise .9s var(--ease) forwards }
.hero__h1 .line:nth-child(1) > *{ animation-delay:.08s }
.hero__h1 .line:nth-child(2) > *{ animation-delay:.16s }
.hero__h1 .line:nth-child(3) > *{ animation-delay:.24s }
.hero__h1 .line:nth-child(4) > *{ animation-delay:.32s }
@keyframes rise{ to{ transform:none; opacity:1 } }
.eyebrow, .hero__lead, .hero__actions, .hero__caption{ opacity:0; animation:fade .9s var(--ease) forwards }
.eyebrow{ animation-delay:0s } .hero__lead{ animation-delay:.42s } .hero__actions{ animation-delay:.52s } .hero__caption{ animation-delay:1s }
.frame{ opacity:0; transform:translateY(26px) scale(.985); animation:frameIn 1.2s var(--ease) .35s forwards }
@keyframes fade{ to{ opacity:1 } }
@keyframes frameIn{ to{ opacity:1; transform:none } }

@media (max-width:900px){
  .hero{ padding-top:18px }
  .hero__grid{ grid-template-columns:1fr; gap:22px }
  .hero__copy{ display:contents }
  .eyebrow{ order:1; margin-bottom:6px }
  .hero__h1{ order:2; margin-bottom:6px; font-size:clamp(40px, 11.5vw, 60px) }
  .hero__visual{ order:3 }
  .hero__actions{ order:4; align-items:stretch; margin-top:4px }
  .hero__actions .btn{ width:100% }
  .hero__note{ text-align:center }
  .hero__lead{ order:5; font-size:16px; margin:6px 0 0 }
  .hero__caption{ margin-top:12px; font-size:15px }
  .frame{ border-radius:22px }
}

/* ==========================================================
   2 · DISCOVERY
   ========================================================== */
.discovery{ padding:clamp(56px, 9vw, 120px) 0 }
.discovery__grid{
  display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(28px, 5vw, 72px); align-items:start;
}
.discovery__copy p{ margin:0 0 18px; font-size:16.5px; line-height:1.65; color:var(--ink-2); max-width:560px; text-wrap:pretty }
.discovery__copy .big{
  font-family:var(--serif); font-size:clamp(21px, 2.2vw, 28px); line-height:1.3; color:var(--ink); margin-bottom:24px;
}
.ledger{
  position:relative; overflow:hidden;
  background:var(--ink); color:var(--ivory);
  border-radius:var(--r-lg); padding:clamp(22px, 3vw, 34px);
  box-shadow:0 40px 80px -50px rgba(24,26,38,.7);
}
.ledger::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(60% 50% at 0% 0%, rgba(217,106,44,.18), transparent 70%),
             radial-gradient(60% 50% at 100% 100%, rgba(74,88,114,.35), transparent 70%);
}
.ledger > *{ position:relative }
.ledger__hd{
  display:flex; justify-content:space-between; gap:12px;
  font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase; color:var(--night-mute);
  padding-bottom:16px; border-bottom:1px solid rgba(255,255,255,.12); margin-bottom:22px;
}
.ledger__pair{ display:grid; gap:10px }
.ledger__item{
  display:flex; align-items:center; gap:14px;
  padding:16px; border-radius:14px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08);
  transition:background var(--t-fast), transform var(--t-fast);
}
.ledger__item:hover{ background:rgba(255,255,255,.08); transform:translateX(3px) }
.ledger__item b{ display:block; font-family:var(--serif); font-weight:500; font-size:20px; letter-spacing:-.01em }
.ledger__item small{ display:block; font-size:12.5px; color:var(--night-text); margin-top:2px }
.ledger__sun,.ledger__moon{ flex-shrink:0; width:38px; height:38px; border-radius:50% }
.ledger__sun{ background:radial-gradient(circle at 35% 35%, #f3a06a, var(--day) 65%); box-shadow:0 0 0 6px rgba(217,106,44,.15) }
.ledger__moon{ background:radial-gradient(circle at 35% 35%, #7f90ad, var(--night) 70%); box-shadow:0 0 0 6px rgba(74,88,114,.22) }
.ledger__plus{
  text-align:center; font-family:var(--serif); font-size:30px; line-height:.8; color:var(--night-mute); margin:-2px 0;
}
.ledger__result{
  margin:22px 0 0; font-family:var(--serif); font-size:18px; line-height:1.4; color:var(--ivory);
  padding-top:18px; border-top:1px solid rgba(255,255,255,.12);
}
.ledger__foot{ margin:12px 0 0; font-size:12px; line-height:1.5; color:var(--night-mute) }
@media (max-width:900px){
  .discovery__grid{ grid-template-columns:1fr }
}

/* ==========================================================
   3 · ONE ROUTINE. TWO PARTS.
   ========================================================== */
.system{ padding:clamp(20px, 4vw, 40px) 0 clamp(56px, 9vw, 120px) }

.clock{
  display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:16px;
  margin:0 0 26px;
  font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase;
}
.clock__label--day{ color:var(--day) }
.clock__label--night{ color:var(--night-2) }
.clock__track{
  position:relative; height:2px; border-radius:2px;
  background:linear-gradient(90deg, var(--day) 0%, rgba(217,106,44,.25) 45%, rgba(43,51,70,.25) 60%, var(--night) 100%);
}
.clock__sun,.clock__moon{
  position:absolute; top:50%; width:12px; height:12px; border-radius:50%; transform:translate(-50%,-50%);
}
.clock__sun{ left:0; background:var(--day); box-shadow:0 0 0 5px rgba(217,106,44,.18) }
.clock__moon{ left:100%; background:var(--night); box-shadow:0 0 0 5px rgba(43,51,70,.18) }
.clock.in .clock__sun{ animation:sunRun 1.6s var(--ease) forwards }
@keyframes sunRun{ from{ left:0 } to{ left:62% } }

.duo{ display:grid; grid-template-columns:1fr 1fr; gap:18px }
.card{
  position:relative; overflow:hidden; isolation:isolate;
  display:grid; grid-template-columns:44% 1fr;
  border-radius:var(--r-lg);
  background:var(--paper); border:1px solid var(--line);
  color:var(--ink);
  transform-style:preserve-3d;
  transition:transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
  box-shadow:0 30px 60px -50px rgba(24,26,38,.35);
}
.card:hover{ box-shadow:0 46px 80px -46px rgba(24,26,38,.45); border-color:var(--line-2) }
.card__img{ position:relative; overflow:hidden; min-height:260px; background:#e4dfd6 }
.card__img picture{ position:absolute; inset:0 }
.card__img img{
  width:100%; height:100%; object-fit:cover; object-position:50% 28%;
  transition:transform 1.1s var(--ease);
}
.card:hover .card__img img{ transform:scale(1.04) }
.card__img::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(90deg, transparent 70%, rgba(24,26,38,.06));
}
.card__body{ padding:clamp(22px, 2.6vw, 34px) clamp(20px, 2.6vw, 32px); display:flex; flex-direction:column; gap:12px }
.card__kicker{
  display:inline-flex; align-items:center; gap:8px; margin:0;
  font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase; color:var(--ink-3);
}
.card__dot{ width:8px; height:8px; border-radius:50%; background:var(--day) }
.card__title{
  font-family:var(--serif); font-weight:500; font-size:clamp(24px, 2.3vw, 32px);
  line-height:1.08; letter-spacing:-.02em; margin:2px 0 0; text-wrap:balance;
}
.card__text{ margin:0; font-size:15px; line-height:1.6; color:var(--ink-2) }
.card__list{ list-style:none; margin:6px 0 0; padding:0; display:grid; gap:9px }
.card__list li{
  position:relative; padding-left:24px; font-size:14.5px; line-height:1.45; color:var(--ink);
}
.card__list li::before{
  content:""; position:absolute; left:0; top:.42em; width:13px; height:13px; border-radius:50%;
  background:var(--day-soft);
  box-shadow:inset 0 0 0 1px rgba(217,106,44,.5);
}
.card__list li::after{
  content:""; position:absolute; left:4px; top:.42em; width:5px; height:8px; margin-top:1px;
  border:solid var(--day); border-width:0 1.5px 1.5px 0; transform:rotate(45deg);
}
.card__note{
  margin:auto 0 0; padding-top:14px; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:11px; letter-spacing:.04em; line-height:1.5; color:var(--ink-3);
}

/* NIGHT card — dark surface, high contrast */
.card--night{ background:var(--night-deep); border-color:rgba(255,255,255,.08); color:var(--ivory) }
.card--night::before{
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:radial-gradient(70% 60% at 100% 0%, rgba(74,88,114,.35), transparent 70%);
}
.card--night .card__img{ background:#20242f }
.card--night .card__img::after{ background:linear-gradient(90deg, transparent 70%, rgba(23,27,39,.35)) }
.card--night .card__kicker{ color:#a9b6cc }
.card--night .card__dot{ background:#8aa1b8 }
.card--night .card__title{ color:#fff }
.card--night .card__text{ color:var(--night-text) }
.card--night .card__list li{ color:#eef0f5 }
.card--night .card__list li::before{ background:rgba(138,161,184,.18); box-shadow:inset 0 0 0 1px rgba(138,161,184,.6) }
.card--night .card__list li::after{ border-color:#aebfd6 }
.card--night .card__note{ border-top-color:rgba(255,255,255,.12); color:var(--night-mute) }
.card--night:hover{ box-shadow:0 46px 80px -40px rgba(43,51,70,.8) }

@media (max-width:980px){
  .duo{ grid-template-columns:1fr }
}
@media (max-width:560px){
  .card{ grid-template-columns:1fr; border-radius:22px }
  .card__img{ aspect-ratio:4/5; min-height:0 }
  .card__img img{ object-position:50% 25% }
  .card__img::after{ background:linear-gradient(180deg, transparent 75%, rgba(24,26,38,.08)) }
  .card--night .card__img::after{ background:linear-gradient(180deg, transparent 70%, rgba(23,27,39,.6)) }
  .card__body{ padding:20px 20px 22px; gap:10px }
  .card__title{ font-size:22px }
  .card__text{ font-size:14px }
  .card__list li{ font-size:13.5px }
  .card__note{ font-size:10.5px }
  .clock{ gap:10px; font-size:10px; letter-spacing:.12em }
}

/* ==========================================================
   4 · WHY CIRCA
   ========================================================== */
.why{ padding:0 0 clamp(56px, 9vw, 120px) }
.why__grid{
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px, 5vw, 72px); align-items:center;
  padding:clamp(36px, 5vw, 64px) 0 0; border-top:1px solid var(--line);
}
.why__quote{ margin:0 0 22px; padding:0 }
.why__quote p{
  font-family:var(--serif); font-style:italic; font-weight:400;
  font-size:clamp(24px, 2.6vw, 34px); line-height:1.25; letter-spacing:-.015em;
  color:var(--ink); margin:0 0 14px; text-wrap:pretty;
}
.why__quote footer{ font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--ink-3) }
.why__p{ margin:0 0 14px; font-size:16px; line-height:1.65; color:var(--ink-2); max-width:520px; text-wrap:pretty }

.arc{ margin:0; padding:clamp(18px, 3vw, 30px); background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg) }
.arc__svg{ width:100%; height:auto }
.arc__line{ stroke-dasharray:800; stroke-dashoffset:800; transition:stroke-dashoffset 1.8s var(--ease) .2s }
.arc.in .arc__line{ stroke-dashoffset:0 }
.arc__pt{ opacity:0; transform-origin:center; transition:opacity .6s ease }
.arc.in .arc__pt--day{ opacity:1; transition-delay:.2s }
.arc.in .arc__pt--mid{ opacity:1; transition-delay:1s }
.arc.in .arc__pt--night{ opacity:1; transition-delay:1.8s }
.arc__labels{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:10px; margin-top:6px;
  font-size:13px; color:var(--ink-2); line-height:1.4;
}
.arc__labels span{ text-align:center }
.arc__labels span:first-child{ text-align:left } .arc__labels span:last-child{ text-align:right }
.arc__labels b{ display:block; font-family:var(--serif); font-weight:500; font-size:17px; color:var(--ink); margin-bottom:2px }
@media (max-width:900px){
  .why__grid{ grid-template-columns:1fr }
}

/* ==========================================================
   5 · EARLY ACCESS
   ========================================================== */
.join{ padding:0 0 clamp(56px, 9vw, 120px) }
.join__panel{
  position:relative; isolation:isolate; overflow:hidden;
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px, 5vw, 64px);
  padding:clamp(28px, 5vw, 64px);
  background:var(--ink); color:var(--ivory);
  border-radius:var(--r-xl);
  box-shadow:0 60px 100px -60px rgba(24,26,38,.8);
}
.join__panel::before{
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(50% 60% at 0% 0%, rgba(217,106,44,.22), transparent 70%),
    radial-gradient(50% 60% at 100% 100%, rgba(74,88,114,.4), transparent 70%);
}
.join__sub{ margin:0 0 22px; font-size:17px; line-height:1.6; color:var(--night-text); max-width:460px }
.join__assure{ list-style:none; margin:0; padding:0; display:grid; gap:10px }
.join__assure li{ position:relative; padding-left:26px; font-size:14.5px; color:#e6e3dd }
.join__assure li::before{
  content:""; position:absolute; left:0; top:.3em; width:14px; height:14px; border-radius:50%;
  background:rgba(217,106,44,.2); box-shadow:inset 0 0 0 1px rgba(217,106,44,.7);
}
.join__assure li::after{
  content:""; position:absolute; left:4.5px; top:.3em; margin-top:2px; width:4px; height:7px;
  border:solid #f3a06a; border-width:0 1.5px 1.5px 0; transform:rotate(45deg);
}

.form{ display:grid; gap:20px; align-content:start }
.form__field label, .form__group legend{
  display:block; font-size:13px; font-weight:600; letter-spacing:.02em; color:#e6e3dd; margin-bottom:9px;
}
.form__group legend span{ font-weight:400; color:var(--night-mute); margin-left:6px }
.form__field input{
  width:100%; height:54px; padding:0 18px;
  background:#fff; color:var(--ink);
  border:1.5px solid transparent; border-radius:14px; outline:none;
  font-size:16px;
  transition:border-color var(--t-fast), box-shadow var(--t-fast);
}
.form__field input::placeholder{ color:var(--ink-3) }
.form__field input:focus{ border-color:var(--day); box-shadow:0 0 0 4px rgba(217,106,44,.22) }
.form__field input[aria-invalid="true"]{ border-color:#e0665a }
.form__err{ margin:7px 0 0; font-size:13px; color:#f1a19a; min-height:0 }
.form__err:empty{ display:none }

.chips{ display:flex; gap:8px; flex-wrap:wrap }
.chip{ position:relative; cursor:pointer }
.chip input{ position:absolute; opacity:0; inset:0; width:100%; height:100%; margin:0; cursor:pointer }
.chip span{
  display:inline-flex; align-items:center; height:42px; padding:0 20px;
  border-radius:999px; border:1.5px solid rgba(255,255,255,.22);
  font-family:var(--mono); font-size:12px; letter-spacing:.16em; color:#e6e3dd;
  transition:background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.chip:hover span{ border-color:rgba(255,255,255,.5); transform:translateY(-1px) }
.chip input:checked + span{ background:var(--ivory); color:var(--ink); border-color:var(--ivory) }
.chip input:focus-visible + span{ outline:2px solid var(--day); outline-offset:3px }

.radios{ display:grid; gap:8px }
.radio{ position:relative; display:flex; align-items:center; gap:12px; padding:12px 14px; border-radius:12px; border:1.5px solid rgba(255,255,255,.14); cursor:pointer; transition:border-color var(--t-fast), background var(--t-fast) }
.radio:hover{ border-color:rgba(255,255,255,.35) }
.radio input{ appearance:none; -webkit-appearance:none; width:18px; height:18px; margin:0; border-radius:50%; border:1.5px solid rgba(255,255,255,.5); flex-shrink:0; display:grid; place-items:center; cursor:pointer; transition:border-color var(--t-fast) }
.radio input::before{ content:""; width:9px; height:9px; border-radius:50%; background:var(--day); transform:scale(0); transition:transform var(--t-fast) }
.radio input:checked{ border-color:var(--day) }
.radio input:checked::before{ transform:scale(1) }
.radio:has(input:checked){ border-color:rgba(217,106,44,.7); background:rgba(217,106,44,.08) }
.radio span{ font-size:14.5px; color:#e6e3dd }
.radio span b{ font-family:var(--serif); font-weight:500; font-size:17px; color:#fff }

.consent{ display:flex; gap:12px; align-items:flex-start; cursor:pointer; margin-top:2px }
.consent input{ appearance:none; -webkit-appearance:none; flex-shrink:0; width:20px; height:20px; margin:1px 0 0; border-radius:6px; border:1.5px solid rgba(255,255,255,.5); display:grid; place-items:center; cursor:pointer; transition:background var(--t-fast), border-color var(--t-fast) }
.consent input::before{ content:""; width:5px; height:9px; border:solid #fff; border-width:0 2px 2px 0; transform:rotate(45deg) scale(0); transition:transform var(--t-fast); margin-top:-2px }
.consent input:checked{ background:var(--day); border-color:var(--day) }
.consent input:checked::before{ transform:rotate(45deg) scale(1) }
.consent span{ font-size:13.5px; line-height:1.5; color:var(--night-text) }

.hp{ position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden }

.form__submit{ width:100%; margin-top:4px; position:relative }
.btn__spinner{ display:none; width:16px; height:16px; border-radius:50%; border:2px solid rgba(255,255,255,.4); border-top-color:#fff; animation:spin .8s linear infinite }
.form.is-busy .btn__spinner{ display:inline-block }
.form.is-busy .form__submit{ pointer-events:none; opacity:.85 }
@keyframes spin{ to{ transform:rotate(360deg) } }
.form__status{ margin:0; font-size:13.5px; color:#f1a19a; text-align:center }
.form__status:empty{ display:none }

.form__done{
  display:grid; align-content:center; justify-items:start; gap:12px; color:var(--ivory);
  animation:fade .7s var(--ease);
}
.form__done svg{ color:#f3a06a }
.form__done h3{ font-family:var(--serif); font-weight:500; font-size:34px; letter-spacing:-.02em; margin:6px 0 0 }
.form__done p{ margin:0; font-size:16px; color:var(--night-text); max-width:400px }

@media (max-width:900px){
  .join__panel{ grid-template-columns:1fr; border-radius:26px; padding:26px 20px }
  .join__sub{ font-size:16px }
}

/* FAQ */
.faq{ max-width:760px; margin:clamp(36px, 5vw, 56px) auto 0 }
.faq__h{ font-family:var(--serif); font-weight:500; font-size:24px; letter-spacing:-.01em; margin:0 0 14px }
.faq details{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r-md); margin-bottom:8px;
  transition:border-color var(--t-fast), background var(--t-fast);
}
.faq details:hover{ border-color:var(--line-2) }
.faq details[open]{ background:#fff; border-color:var(--line-2) }
.faq summary{
  list-style:none; cursor:pointer; display:flex; justify-content:space-between; align-items:center; gap:14px;
  padding:18px 20px; font-family:var(--serif); font-weight:500; font-size:18px; letter-spacing:-.01em; color:var(--ink);
}
.faq summary::-webkit-details-marker{ display:none }
.faq summary i{
  flex-shrink:0; width:20px; height:20px;
  background:
    linear-gradient(var(--ink),var(--ink)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center / 1.5px 12px no-repeat;
  transition:transform var(--t-med);
}
.faq details[open] summary i{ transform:rotate(45deg) }
.faq details > div{ padding:0 20px 20px; font-size:15px; line-height:1.6; color:var(--ink-2) }
.faq details > div a{ text-decoration:underline; text-underline-offset:3px }

/* ==========================================================
   FOOTER
   ========================================================== */
.ftr{ border-top:1px solid var(--line); padding:48px 0 28px; background:var(--ivory-2) }
.ftr__grid{ display:flex; justify-content:space-between; align-items:flex-start; gap:28px; flex-wrap:wrap }
.ftr__brand p{ margin:12px 0 0; max-width:320px; font-size:14px; color:var(--ink-2) }
.ftr__links{ display:flex; gap:22px; flex-wrap:wrap; font-size:14px; font-weight:500 }
.ftr__links a{ color:var(--ink-2); transition:color var(--t-fast) }
.ftr__links a:hover{ color:var(--day) }
.ftr__bot{
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin-top:36px; padding-top:20px; border-top:1px solid var(--line);
  font-size:12.5px; color:var(--ink-3);
}
.ftr__fine{ max-width:640px; font-size:11.5px; line-height:1.5 }

/* ==========================================================
   MOBILE STICKY CTA
   ========================================================== */
.sticky{
  position:fixed; left:0; right:0; bottom:0; z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(243,238,229,.86); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  transform:translateY(110%); transition:transform .45s var(--ease);
  display:none;
}
.sticky .btn{ width:100% }
.sticky.show{ transform:none }
@media (max-width:900px){
  .sticky{ display:block }
  body.has-sticky{ padding-bottom:0 }
}

/* ==========================================================
   REVEALS & MOTION PREFERENCES
   ========================================================== */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .8s var(--ease), transform .9s var(--ease) }
.reveal.in{ opacity:1; transform:none }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-delay:0s !important; transition-duration:.001ms !important }
  .reveal{ opacity:1; transform:none }
  .hero__h1 .line > *{ transform:none; opacity:1 }
  .eyebrow,.hero__lead,.hero__actions,.hero__caption,.frame{ opacity:1; transform:none }
  .frame__tag{ opacity:1; transform:none }
  .arc__line{ stroke-dashoffset:0 } .arc__pt{ opacity:1 }
}

/* ==========================================================
   SCIENCE PAGE
   ========================================================== */
.page{ padding:clamp(28px, 5vw, 64px) 0 clamp(56px, 9vw, 120px) }
.page__head{ max-width:760px; margin-bottom:clamp(28px, 4vw, 48px) }
.page__head .h2{ font-size:clamp(38px, 5.6vw, 72px) }
.prose{ max-width:680px }
.prose h3{ font-family:var(--serif); font-weight:500; font-size:clamp(24px, 2.4vw, 32px); letter-spacing:-.02em; margin:clamp(32px, 4vw, 48px) 0 12px }
.prose p{ font-size:16.5px; line-height:1.68; color:var(--ink-2); margin:0 0 16px; text-wrap:pretty }
.prose p.lede{ font-family:var(--serif); font-size:clamp(20px, 2vw, 26px); line-height:1.35; color:var(--ink) }
.prose ul{ margin:0 0 16px; padding-left:20px; color:var(--ink-2); font-size:16px; line-height:1.6 }
.prose li{ margin-bottom:6px }
.prose .note{ padding:16px 18px; border-left:2px solid var(--day); background:var(--paper); border-radius:0 12px 12px 0; font-size:14.5px; color:var(--ink-2) }
.prose a{ text-decoration:underline; text-underline-offset:3px }

.chart{ background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg); padding:28px clamp(18px, 3vw, 36px) 22px; margin:28px 0 }
.chart__hd{ display:flex; flex-direction:column; gap:4px; margin-bottom:18px }
.chart__hd > span:first-child{ font-family:var(--mono); font-size:11.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--ink) }
.chart__hd-meta{ font-size:13px; color:var(--ink-3); font-style:italic }
.chart__svg{ width:100%; height:clamp(170px, 24vw, 230px); overflow:visible }
.chart__stroke{ stroke-dasharray:1500; stroke-dashoffset:1500; transition:stroke-dashoffset 1.6s var(--ease) }
.chart__stroke--legacy{ transition-delay:.1s } .chart__stroke--circa{ transition-delay:.3s } .chart__stroke--night{ transition-delay:.8s }
.chart__line{ opacity:0; transition:opacity 1.2s ease }
.chart__line--legacy{ transition-delay:.1s } .chart__line--circa{ transition-delay:.3s } .chart__line--night{ transition-delay:.8s }
.chart.in .chart__stroke{ stroke-dashoffset:0 } .chart.in .chart__line{ opacity:1 }
.chart__axis{ display:grid; grid-template-columns:repeat(7,1fr); margin-top:8px; font-family:var(--mono); font-size:10.5px; color:var(--ink-3); letter-spacing:.06em }
.chart__axis span{ text-align:center } .chart__axis span:first-child{ text-align:left } .chart__axis span:last-child{ text-align:right }
.chart__key{ display:flex; gap:18px; flex-wrap:wrap; margin-top:20px; padding-top:16px; border-top:1px solid var(--line); font-size:13px; color:var(--ink-2) }
.chart__key span{ display:inline-flex; align-items:center; gap:8px }
.k{ width:18px; height:3px; border-radius:2px; flex-shrink:0 }
.k--circa{ background:var(--day) } .k--night{ background:var(--night-2) }
.k--legacy{ background-image:linear-gradient(90deg, #a44a3a 50%, transparent 50%); background-size:6px 3px }
@media (prefers-reduced-motion: reduce){ .chart__stroke{ stroke-dashoffset:0 } .chart__line{ opacity:1 } }

/* ==========================================================
   SHORT-FORM HOMEPAGE ADDITIONS
   ========================================================== */
.hero__sync{
  margin:0 0 14px; font-family:var(--mono); font-size:clamp(12px, 1.1vw, 14px);
  letter-spacing:.22em; text-transform:uppercase; color:var(--ink-2);
  opacity:0; animation:fade .9s var(--ease) .36s forwards;
}
.hero__sync .day{ color:var(--day) } .hero__sync .night{ color:var(--night-2) }
.hero__lead{ font-size:clamp(17px, 1.5vw, 21px); max-width:460px }
.discovery{ padding:clamp(64px, 9vw, 130px) 0 clamp(40px, 6vw, 80px) }
.discovery__grid{ align-items:center }
.discovery__copy .discovery__num{
  font-family:var(--serif); font-weight:500; font-size:clamp(84px, 12vw, 168px);
  line-height:.9; letter-spacing:-.04em; margin:0 0 10px; color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.discovery__copy .h2{ font-size:clamp(28px, 3.6vw, 44px); margin-bottom:22px }
.discovery__q{ font-family:var(--serif); font-style:italic; font-size:clamp(20px, 2vw, 26px); color:var(--ink) !important; margin-top:6px !important }
.card__text{ font-size:16.5px }
.card__body{ gap:8px }
.card__title{ font-size:clamp(26px, 2.4vw, 34px) }
.idea{ padding:clamp(48px, 7vw, 100px) 0 clamp(56px, 8vw, 110px) }
.idea__inner{ max-width:720px; margin-inline:auto; text-align:center; padding-top:clamp(40px, 6vw, 72px); border-top:1px solid var(--line) }
.idea__inner .h2{ margin-bottom:16px }
.idea__p{ margin:0 auto 14px; max-width:560px; font-size:clamp(16px, 1.4vw, 19px); line-height:1.6; color:var(--ink-2); text-wrap:pretty }
.idea__note{ margin:0 auto; max-width:520px; font-size:14px; line-height:1.55; color:var(--ink-3) }
.idea__note a{ color:var(--ink); text-decoration:underline; text-underline-offset:3px; white-space:nowrap }
@media (max-width:900px){
  .hero__sync{ order:3; margin:0 0 4px }
  .hero__visual{ order:4 }
  .hero__actions{ order:5 }
  .hero__lead{ order:6; text-align:center; margin:4px auto 0 }
  .discovery__grid{ gap:28px }
}
@media (max-width:560px){
  .card__img{ aspect-ratio:1/1 }
  .card__img img{ object-position:50% 30% }
}