@property --trail-blue { syntax: '<angle>'; inherits: true; initial-value: 0turn; }
@property --trail-yellow { syntax: '<angle>'; inherits: true; initial-value: 0turn; }
@property --trail-red { syntax: '<angle>'; inherits: true; initial-value: 0turn; }

:root { --bg:#181818; --text:#f0ece4; --muted:#c8c4bc; --muted2:#8a8680; --border:#2e2e2e; --border2:#3a3a3a; --blue:#4a9eff; --yellow:#ffd84a; --red:#ff4a4a; --green:#3db87a; --glass:rgba(26,26,28,.65); --glass-line:1px solid rgba(255,255,255,.10); --page-max:1240px; --pad:clamp(20px,5vw,80px); --font:'Wix Madefor Display',ui-sans-serif,system-ui,sans-serif; }
* { box-sizing:border-box; } [hidden] { display:none!important; } html { background:var(--bg); scroll-behavior:smooth; } body { min-width:320px; margin:0; overflow-x:hidden; background:var(--bg); color:var(--text); font:400 16px/1.6 var(--font); } button,textarea { font:inherit; } button { cursor:pointer; } button:focus-visible,textarea:focus-visible { outline:2px solid var(--blue); outline-offset:3px; }
#ls-particle-canvas { position:fixed; z-index:0; inset:0; width:100%; height:100%; opacity:.45; pointer-events:none; }.page-shell { position:relative; z-index:1; width:min(100%,var(--page-max)); margin:auto; padding:0 var(--pad) 112px; }.site-header { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:28px 0 48px; }.wordmark { color:var(--text); font-size:17px; font-weight:700; letter-spacing:-.04em; text-decoration:none; }.wordmark span { color:var(--yellow); }.site-label,.eyebrow { margin:0; font-size:11px; font-weight:700; letter-spacing:.2em; text-transform:uppercase; }.site-label { color:var(--muted2); }.eyebrow { color:var(--blue); }.eyebrow-yellow { color:var(--yellow); }.eyebrow-red { color:var(--red); } h1,h2,h3,p { margin-top:0; } h1,h2,h3 { letter-spacing:-.055em; line-height:.98; } h1 { max-width:750px; margin:15px 0 22px; font-size:clamp(42px,5vw,62px); font-weight:650; } h2 { margin-bottom:16px; font-size:clamp(31px,3.8vw,48px); font-weight:650; } h3 { margin:14px 0; font-size:clamp(25px,3vw,37px); font-weight:650; }.brand-animated { background:linear-gradient(90deg,var(--blue),#7e93e8 32%,var(--yellow) 65%,var(--red)); background-size:200% auto; color:transparent; -webkit-background-clip:text; background-clip:text; animation:gradient-flow 8s ease infinite; }.intro { display:grid; grid-template-columns:minmax(0,1.24fr) minmax(260px,.54fr); gap:clamp(35px,8vw,130px); align-items:center; min-height:400px; padding:8px 0 88px; }.lead { max-width:620px; margin-bottom:28px; color:var(--muted); font-size:17px; }.privacy-note,.progress-card,.answer-workspace,.output-section { background:var(--glass); border:var(--glass-line); box-shadow:0 24px 60px rgba(0,0,0,.32),inset 0 1px rgba(255,255,255,.05); backdrop-filter:blur(24px); -webkit-backdrop-filter:blur(24px); }.privacy-note { padding:26px; border-radius:16px; }.privacy-note h2 { margin:14px 0 10px; font-size:27px; }.privacy-note p:last-child { margin:0; color:var(--muted); font-size:14px; line-height:1.55; }
.trail-button,.secondary-button,.text-button { position:relative; display:inline-flex; align-items:center; justify-content:center; min-height:46px; border:0; border-radius:999px; padding:11px 18px; color:var(--text); font-size:12px; font-weight:700; letter-spacing:.08em; text-decoration:none; text-transform:uppercase; transition:transform 180ms ease,background 180ms ease; }.trail-button { isolation:isolate; background:rgba(255,255,255,.04); }.trail-button::before,.card-face::after { content:''; position:absolute; inset:-1px; border-radius:inherit; padding:1px; pointer-events:none; background:conic-gradient(from var(--trail-blue),transparent 0%,var(--blue) 15%,transparent 35%),conic-gradient(from var(--trail-yellow),transparent 0%,var(--yellow) 15%,transparent 35%),conic-gradient(from var(--trail-red),transparent 0%,var(--red) 15%,transparent 35%); -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0); -webkit-mask-composite:xor; mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0); mask-composite:exclude; animation:trail-blue 8s linear infinite,trail-yellow 12s linear infinite,trail-red 17s linear infinite; }.trail-button::before { z-index:-1; }.trail-button:hover,.secondary-button:hover { transform:translateY(-2px); background:rgba(255,255,255,.08); }.trail-button span { margin-left:10px; font-size:17px; line-height:1; }.secondary-button { border:1px solid var(--border2); background:rgba(255,255,255,.025); }.text-button { min-height:auto; padding:5px 0; background:transparent; color:var(--muted2); font-size:11px; letter-spacing:.04em; text-transform:none; text-decoration:underline; text-underline-offset:3px; }.text-button:hover { color:var(--text); }
.deck-section { padding:35px 0 84px; scroll-margin-top:16px; }.deck-header { display:flex; justify-content:space-between; align-items:end; gap:32px; padding-bottom:20px; }.deck-header h2 { max-width:720px; margin:14px 0 0; }.deck-header h2 em { color:var(--yellow); font-style:normal; }.progress-card { width:188px; flex:0 0 auto; padding:15px 17px; border-radius:12px; }.progress-card span { display:block; color:var(--muted2); font-size:11px; line-height:1.35; }.progress-card .progress-number { margin-bottom:4px; color:var(--muted); font-size:14px; }.progress-number b { color:var(--text); font-size:21px; }.progress-line { width:100%; height:2px; margin-top:12px; overflow:hidden; background:rgba(255,255,255,.14); }.progress-line i { display:block; width:0; height:100%; background:linear-gradient(90deg,var(--blue),var(--yellow),var(--red)); transition:width 180ms ease; }.deck-toolbar { display:flex; align-items:center; justify-content:space-between; gap:30px; padding:15px 0 27px; border-top:1px solid var(--border); }.deck-toolbar p { max-width:600px; margin:0; color:var(--muted); font-size:14px; }.carousel-controls { display:flex; flex:0 0 auto; gap:9px; }.carousel-button { width:47px; min-height:43px; padding:5px; font-size:20px; }.deck-carousel { display:flex; gap:44px; overflow-x:auto; padding:5px 4px 34px; scroll-snap-type:x mandatory; scrollbar-color:var(--border2) transparent; scrollbar-width:thin; }.deck-card { position:relative; flex:0 0 430px; height:630px; scroll-snap-align:start; perspective:1600px; }.card-inner { position:relative; width:100%; height:100%; transform-style:preserve-3d; transition:transform 700ms cubic-bezier(.175,.885,.32,1.15); }.deck-card.is-flipped .card-inner { transform:rotateY(180deg); }.card-face { position:absolute; inset:0; display:flex; overflow:hidden; padding:32px; border:var(--glass-line); border-radius:20px; background:linear-gradient(145deg,rgba(48,48,50,.73),rgba(22,22,23,.91)); box-shadow:0 30px 70px rgba(0,0,0,.4),inset 0 1px rgba(255,255,255,.10); backface-visibility:hidden; -webkit-backface-visibility:hidden; color:var(--text); text-align:left; }.card-face::after { z-index:4; opacity:.62; }.card-front { flex-direction:column; justify-content:space-between; border:var(--glass-line); }.card-front:hover { transform:translateY(-7px); }.card-back { transform:rotateY(180deg); padding:0; }.flip-back { position:relative; z-index:5; display:flex; flex-direction:column; width:100%; height:100%; justify-content:space-between; border:0; padding:32px; background:transparent; color:var(--text); text-align:left; }.card-top { display:flex; justify-content:space-between; gap:12px; color:var(--muted2); font-size:11px; font-weight:700; letter-spacing:.15em; text-transform:uppercase; }.card-model,.card-anchor,.card-title,.card-cue,.exercise-name,.card-question,.exercise-steps,.back-cue { position:relative; z-index:5; }.card-model { color:var(--muted2); font-size:12px; letter-spacing:.12em; text-transform:uppercase; }.card-title { max-width:350px; font-size:clamp(33px,3.1vw,45px); font-weight:650; letter-spacing:-.06em; line-height:.96; }.card-anchor { max-width:300px; color:var(--muted); font-size:17px; line-height:1.3; }.card-cue,.back-cue { color:var(--muted2); font-size:12px; }.card-cue i { margin-left:6px; color:var(--text); font-size:16px; font-style:normal; }.exercise-name { margin:0; color:var(--yellow); font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; }.card-question { max-width:350px; font-size:26px; font-weight:650; letter-spacing:-.05em; line-height:1.04; }.exercise-steps { max-width:350px; margin:0; padding-left:23px; color:var(--muted); font-size:16px; line-height:1.45; }.exercise-steps li+li { margin-top:10px; }.deck-card.is-answered .card-state { color:var(--green); }.deck-card[data-hue='blue'] .exercise-name { color:var(--blue); }.deck-card[data-hue='yellow'] .exercise-name { color:var(--yellow); }.deck-card[data-hue='red'] .exercise-name { color:var(--red); }
.answer-workspace { display:grid; grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr); gap:clamp(30px,6vw,80px); align-items:start; margin:14px 0 0; padding:clamp(26px,4vw,48px); border-radius:18px; }.answer-workspace-copy h3 { margin:14px 0 13px; }.answer-workspace-copy > p:not(.eyebrow) { max-width:460px; margin-bottom:14px; color:var(--muted); font-size:17px; }.workspace-note { color:var(--muted2)!important; font-size:13px!important; line-height:1.45; }.answer-entry label { display:block; margin-bottom:9px; font-size:15px; font-weight:700; }.answer-entry textarea { display:block; width:100%; min-height:190px; padding:16px; resize:vertical; border:1px solid var(--border2); border-radius:10px; background:rgba(0,0,0,.25); color:var(--text); font-size:16px; line-height:1.55; }.answer-entry textarea::placeholder { color:var(--muted2); }.answer-entry > div { display:flex; justify-content:space-between; gap:15px; align-items:baseline; margin-top:8px; }.answer-entry span,.copy-status { color:var(--green); font-size:12px; }.output-section { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:36px; align-items:end; margin-top:30px; padding:clamp(25px,4.3vw,48px); border-radius:16px; scroll-margin-top:16px; }.output-copy h2 { margin:16px 0 13px; }.output-copy p:last-child { max-width:600px; margin:0; color:var(--muted); }.output-actions { display:flex; flex-wrap:wrap; align-items:center; justify-content:flex-end; gap:10px; max-width:420px; }
@keyframes trail-blue { to { --trail-blue:1turn; } } @keyframes trail-yellow { to { --trail-yellow:1turn; } } @keyframes trail-red { to { --trail-red:1turn; } } @keyframes gradient-flow { 0%,100% { background-position:0% 50%; } 50% { background-position:100% 50%; } }
@media(max-width:820px) { .site-header { padding-bottom:36px; }.intro { grid-template-columns:1fr; min-height:auto; gap:28px; padding-bottom:62px; }.privacy-note { max-width:560px; }.deck-header { display:block; }.progress-card { margin-top:22px; }.deck-toolbar { align-items:flex-start; }.answer-workspace,.output-section { grid-template-columns:1fr; align-items:start; }.output-actions { justify-content:flex-start; } }
@media(max-width:540px) { .page-shell { padding-bottom:72px; }.site-label { display:none; } h1 { font-size:clamp(40px,12.2vw,55px); }.lead { font-size:16px; }.deck-toolbar { display:block; }.carousel-controls { margin-top:18px; }.deck-card { flex-basis:min(86vw,390px); height:660px; }.card-face,.flip-back { padding:25px; }.card-title { font-size:37px; }.card-question { font-size:23px; }.exercise-steps { font-size:14px; }.answer-entry textarea { min-height:160px; }.answer-workspace { padding:24px; } }
@media(prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; transition-duration:.01ms!important; animation-duration:.01ms!important; animation-iteration-count:1!important; } #ls-particle-canvas { display:none; } }

/* Refinements: a single clear hero, guided card exercises and no clipped hover lift. */
.intro { display:block; min-height:360px; padding:8px 0 88px; }
.intro-copy { max-width:800px; }
.lead { max-width:700px; }
.privacy-note { display:none; }
.how-it-works { padding:24px 0 17px; border-top:1px solid var(--border); }
.how-it-works ol { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:28px; margin:14px 0 0; padding:0; list-style:none; }
.how-it-works li { display:flex; gap:12px; align-items:flex-start; color:var(--muted); font-size:14px; line-height:1.4; }
.how-it-works b { color:var(--yellow); font-size:12px; letter-spacing:.1em; }
.exploration-name { display:grid; grid-template-columns:minmax(0,1fr) minmax(280px,430px); gap:18px; align-items:end; margin-top:19px; padding-top:18px; border-top:1px solid rgba(255,255,255,.08); }
.exploration-name label { display:block; color:var(--text); font-size:14px; font-weight:700; }
.exploration-name p { margin:4px 0 0; color:var(--muted2); font-size:12px; line-height:1.45; }
.exploration-name input { width:100%; min-height:44px; padding:10px 13px; border:1px solid var(--border2); border-radius:9px; outline:none; background:rgba(0,0,0,.2); color:var(--text); font:inherit; transition:border-color 160ms ease,box-shadow 160ms ease; }
.exploration-name input::placeholder { color:var(--muted2); opacity:1; }
.exploration-name input:focus { border-color:var(--blue); box-shadow:0 0 0 3px rgba(69,150,255,.14); }
.models-jump { margin:16px 0 0; color:var(--muted2); font-size:13px; }
.models-jump a { color:var(--text); font-weight:650; text-decoration-color:var(--yellow); text-decoration-thickness:1px; text-underline-offset:5px; }
.models-jump a:hover { color:var(--yellow); }
.deck-toolbar { margin-top:7px; padding:18px 0 17px; border-top:1px solid var(--border); }
.card-front { transition:background 180ms ease,box-shadow 180ms ease; }
.card-front:hover { transform:none; background:linear-gradient(145deg,rgba(56,56,59,.82),rgba(24,24,26,.96)); box-shadow:0 34px 76px rgba(0,0,0,.48),inset 0 1px rgba(255,255,255,.14); }
.card-model,.card-anchor,.card-title,.card-concept,.card-cue,.exercise-name,.exercise-lead,.card-question,.exercise-steps,.back-cue { position:relative; z-index:5; }
.card-anchor { max-width:320px; color:var(--text); font-size:18px; font-weight:600; line-height:1.22; }
.card-concept { max-width:340px; color:var(--muted); font-size:15px; line-height:1.45; }
.exercise-lead { max-width:350px; margin:8px 0 0; color:var(--muted); font-size:14px; line-height:1.4; }
.card-question { font-size:24px; }
.exercise-steps { font-size:15px; line-height:1.35; }
.exercise-steps li+li { margin-top:7px; }
.guide-callout { max-width:460px; padding:12px 14px; border-left:2px solid var(--blue); background:rgba(74,158,255,.06); }
.guide-callout b { color:var(--blue); font-size:11px; letter-spacing:.08em; text-transform:uppercase; }
.guide-callout p { margin:5px 0 0; color:var(--muted2); font-size:13px; line-height:1.45; }
.output-copy h2 { max-width:480px; font-size:clamp(27px,2.7vw,35px); }
.output-copy p:last-child { max-width:640px; }
.data-notice { grid-column:1/-1; max-width:720px; margin:0; color:var(--muted2); font-size:12px; line-height:1.5; }
.output-section { gap:24px; margin-top:34px; padding:clamp(22px,3vw,32px); }
.output-copy h2 { margin:12px 0 8px; font-size:clamp(24px,2.4vw,31px); }
.output-copy p:last-child { font-size:14px; line-height:1.5; }
.data-notice { margin-top:2px; }
@media(max-width:820px) { .intro { min-height:auto; padding-bottom:62px; }.how-it-works ol,.exploration-name { grid-template-columns:1fr; gap:12px; } .exploration-name { align-items:stretch; } }

@media(max-width:1024px) { .answer-workspace { grid-template-columns:1fr; align-items:start; } .answer-workspace-copy { max-width:640px; } }

.eyebrow a { color:inherit; text-decoration:none; }
.eyebrow a:hover { text-decoration:underline; text-underline-offset:4px; }
.deck-header h2 em.brand-animated { color:transparent; }
.deck-toolbar p { flex:1 1 auto; max-width:none; }
.deck-carousel { -webkit-mask-image:linear-gradient(to right,transparent 0,black 4%,black 94%,transparent 100%); mask-image:linear-gradient(to right,transparent 0,black 4%,black 94%,transparent 100%); }
.card-front { justify-content:flex-start; gap:20px; }
.card-cue { margin-top:auto; }
.card-title,.card-question { display:block; text-wrap:balance; }
.card-title::after,.card-question::after { content:''; display:block; width:100%; height:3px; margin-top:16px; border-radius:999px; background:linear-gradient(90deg,var(--blue),var(--yellow) 55%,var(--red)); }
.card-anchor { text-wrap:balance; }
.card-concept,.exercise-lead,.exercise-steps { text-wrap:pretty; }
.flip-back { justify-content:flex-start; gap:15px; }
.exercise-name { color:var(--muted2)!important; }
.exercise-prompts-title { position:relative; z-index:5; margin:0; color:var(--text); font-size:13px; font-weight:700; letter-spacing:.06em; text-transform:uppercase; }
.flip-back .back-cue { margin-top:auto; }
@media(max-width:540px) { .deck-carousel { -webkit-mask-image:linear-gradient(to right,black 0,black 91%,transparent 100%); mask-image:linear-gradient(to right,black 0,black 91%,transparent 100%); }.card-front { gap:17px; }.flip-back { gap:12px; }.card-title::after,.card-question::after { margin-top:13px; } }

/* Site integration and carousel edges. The first and last cards retain their exterior borders. */
.page-shell { padding-top:118px; }
.cards-noscript-nav { display:flex; gap:18px; padding:20px var(--pad); color:var(--text); }
.cards-noscript-nav a { color:inherit; }
.deck-carousel { padding-bottom:88px; margin-bottom:-38px; }
.deck-carousel[data-left-edge='true'][data-right-edge='false'] { -webkit-mask-image:linear-gradient(to right,black 0,black 94%,transparent 100%); mask-image:linear-gradient(to right,black 0,black 94%,transparent 100%); }
.deck-carousel[data-left-edge='false'][data-right-edge='true'] { -webkit-mask-image:linear-gradient(to right,transparent 0,black 6%,black 100%); mask-image:linear-gradient(to right,transparent 0,black 6%,black 100%); }
.deck-carousel[data-left-edge='false'][data-right-edge='false'] { -webkit-mask-image:linear-gradient(to right,transparent 0,black 6%,black 94%,transparent 100%); mask-image:linear-gradient(to right,transparent 0,black 6%,black 94%,transparent 100%); }
.deck-carousel[data-left-edge='true'][data-right-edge='true'] { -webkit-mask-image:none; mask-image:none; }
.answer-workspace { position:relative; z-index:2; margin-top:0; grid-template-columns:minmax(260px,.85fr) minmax(0,1.15fr); align-items:center; }
.answer-workspace-copy h3 { margin-bottom:18px; }
@media(max-width:540px) { .page-shell { padding-top:92px; }.deck-carousel { padding-bottom:74px; margin-bottom:-28px; } }

.resource-context { width:100%; max-width:none; margin:72px 0 0; padding-top:34px; border-top:1px solid var(--border); }
.resource-context > h2 { max-width:680px; margin:14px 0; font-size:clamp(30px,3.3vw,42px); }
.resource-context-lead { max-width:820px; margin:0; color:var(--muted); font-size:17px; }
.models-text-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; margin-top:28px; }
.models-text-grid article { padding:20px; border:1px solid var(--border2); border-radius:14px; background:rgba(255,255,255,.025); }
.models-text-grid h3 { margin:0 0 9px; font-size:22px; line-height:1.03; text-wrap:balance; }
.models-text-grid p { margin:0; color:var(--muted); font-size:14px; line-height:1.5; }
.models-text-grid p + p { margin-top:10px; }
.models-text-grid b { color:var(--text); font-weight:650; }
.resource-faq { width:100%; margin-top:48px; }
.resource-faq h2 { margin-bottom:18px; font-size:clamp(27px,2.7vw,35px); }
.resource-faq details { border-top:1px solid var(--border); }
.resource-faq details:last-child { border-bottom:1px solid var(--border); }
.resource-faq summary { padding:17px 30px 17px 0; color:var(--text); cursor:pointer; font-weight:650; list-style:none; position:relative; }
.resource-faq summary::-webkit-details-marker { display:none; }
.resource-faq summary::after { content:'+'; position:absolute; right:4px; color:var(--yellow); font-size:22px; line-height:1; }
.resource-faq details[open] summary::after { content:'−'; }
.resource-faq details p { max-width:820px; margin:0 0 18px; color:var(--muted); }
@media(max-width:620px) { .resource-context { margin-top:54px; }.models-text-grid { grid-template-columns:1fr; }.models-text-grid article { padding:18px; } }

/* Mobile only: one centered card per stop, then a vertically ordered capture area. */
@media(max-width:540px) {
  .deck-carousel {
    gap:20px;
    padding-left:calc((100vw - min(86vw, 390px)) / 2);
    padding-right:calc((100vw - min(86vw, 390px)) / 2);
    scroll-padding-inline:calc((100vw - min(86vw, 390px)) / 2);
  }
  .deck-card { scroll-snap-align:center; scroll-snap-stop:always; }
  .answer-workspace { grid-template-columns:1fr; align-items:start; gap:28px; }
  .answer-workspace-copy { max-width:none; }
  .answer-entry { width:100%; }

  /* Safari iOS needs explicit 3D faces or it paints both sides of the card. */
  .deck-card { -webkit-perspective:1600px; perspective:1600px; }
  .card-inner { -webkit-transform-style:preserve-3d; transform-style:preserve-3d; }
  .deck-card.is-flipped .card-inner { -webkit-transform:rotateY(180deg); transform:rotateY(180deg); }
  .card-face { -webkit-backface-visibility:hidden; backface-visibility:hidden; }
  .card-front { -webkit-transform:rotateY(0deg) translateZ(1px); transform:rotateY(0deg) translateZ(1px); }
  .card-back { -webkit-transform:rotateY(180deg) translateZ(1px); transform:rotateY(180deg) translateZ(1px); }

  /* A deterministic mobile fallback: render exactly one face, never a 3D composite. */
  .card-inner,
  .deck-card.is-flipped .card-inner { -webkit-transform:none; transform:none; }
  .card-front,
  .card-back,
  .deck-card.is-flipped .card-front,
  .deck-card.is-flipped .card-back { -webkit-transform:none; transform:none; }
  .card-front { display:flex; }
  .card-back { display:none; }
  .deck-card.is-flipped .card-front { display:none; }
  .deck-card.is-flipped .card-back { display:flex; }
}