:root{--ink:#151515;--paper:#f1efe8;--panel:#faf9f4;--acid:#dfff00;--violet:#7657ff;--blue:#2d5bff;--line:rgba(21,21,21,.18);--muted:#66645e;--mono:"DM Mono",monospace;--sans:"Manrope",sans-serif;--reader-height:128px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.55}body.reader-open{padding-bottom:var(--reader-height)}a{color:inherit}.wrap{width:min(1200px,calc(100% - 64px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{height:80px;width:min(1376px,calc(100% - 32px));margin:16px auto 0;padding:0 24px;display:flex;align-items:center;justify-content:space-between;background:rgba(250,249,244,.88);border:1px solid var(--line);border-radius:16px;backdrop-filter:blur(16px);position:sticky;top:16px;z-index:30}.brand{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:700;font-size:20px}.brand-mark{width:32px;height:32px;display:inline-grid;grid-template-columns:1fr 1fr;gap:0;transform:rotate(-8deg)}.brand-mark i:first-child{background:var(--violet);border-radius:16px 0 0 16px}.brand-mark i:last-child{background:var(--acid);border-radius:0 16px 16px 0}.site-header nav{display:flex;gap:32px}.site-header nav a{text-decoration:none;font-size:14px;font-weight:600}.site-header nav a:hover{text-decoration:underline;text-underline-offset:6px}.listen-launch,.button{min-height:48px;border-radius:999px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 14px var(--sans);text-decoration:none;cursor:pointer}.listen-launch{border:0;background:var(--ink);color:white}.listen-launch svg{width:20px;fill:none;stroke:currentColor;stroke-width:1.8}.button.primary{background:var(--acid);color:var(--ink);border:1px solid var(--ink)}.button.secondary{border:1px solid var(--line)}
.hero{min-height:720px;padding:96px 0;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}.eyebrow{margin:0 0 24px;font:500 12px var(--mono);letter-spacing:.08em;text-transform:uppercase}.hero h1,.section-heading h2,.prompt-intro h2,.review-loop h2{margin:0;font-size:clamp(48px,6vw,88px);line-height:.98;letter-spacing:-.06em}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--violet)}.lede{max-width:600px;margin:32px 0;font-size:20px;color:var(--muted)}.hero-actions{display:flex;gap:16px;flex-wrap:wrap}.viewport-demo{height:560px;border-radius:24px;background:#222226;position:relative;overflow:hidden;box-shadow:0 32px 64px rgba(21,21,21,.18);perspective:800px}.demo-bar{height:48px;background:#2d2d32;border-bottom:1px solid #44444a;display:flex;align-items:center;gap:8px;padding:0 16px;color:#aaa;font:12px var(--mono)}.demo-bar span{width:8px;height:8px;border-radius:50%;background:#555}.demo-bar b{margin-left:auto;font-weight:400}.demo-grid{position:absolute;inset:48px 0 0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:32px 32px;transform:perspective(500px) rotateX(60deg) scale(1.7);transform-origin:center bottom}.demo-object{position:absolute;left:50%;top:48%;width:152px;height:152px;transform:translate(-50%,-50%) rotateX(-16deg) rotateY(28deg);transform-style:preserve-3d}.face{position:absolute;inset:0;border:2px solid var(--acid);background:rgba(223,255,0,.08)}.face.top{transform:rotateX(90deg) translateZ(76px)}.face.left{transform:rotateY(90deg) translateZ(-76px);background:rgba(118,87,255,.2)}.face.right{transform:translateZ(76px)}.axis{position:absolute;right:24px;top:72px;width:56px;height:56px}.axis i{position:absolute;left:28px;top:28px;width:24px;height:2px;transform-origin:left}.axis .x{background:#ee5d5d}.axis .y{background:#65d875;transform:rotate(-90deg)}.axis .z{background:#5b8dff;transform:rotate(45deg)}.demo-label{position:absolute;color:#ddd;font:12px var(--mono);background:#2d2d32;border:1px solid #555;padding:8px 16px;border-radius:999px}.demo-label:after{content:"";position:absolute;width:40px;border-top:1px solid #999}.demo-label.one{left:32px;top:152px}.demo-label.one:after{left:100%;top:50%}.demo-label.two{right:48px;top:344px}.demo-label.two:after{right:100%;top:50%}.demo-label.three{left:40px;bottom:40px}.demo-label.three:after{left:100%;top:50%}
.signal{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 0;display:flex;align-items:center;justify-content:space-between}.signal p{margin:0;font-weight:600}.signal p span{font:12px var(--mono);color:var(--violet);margin-right:8px}.signal i{height:1px;flex:1;background:var(--line);margin:0 32px}
.path,.patterns{padding:128px 0}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:64px;margin-bottom:64px}.section-heading h2,.prompt-intro h2,.review-loop h2{font-size:clamp(40px,5vw,72px)}.section-heading>p{max-width:400px;margin:0;color:var(--muted)}.glossary-meta{text-align:right}.glossary-meta p{margin:0}.glossary-meta span{display:block;margin-top:8px;color:var(--muted);font:11px var(--mono)}.lesson-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.lesson{min-height:240px;padding:24px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);background:var(--panel);position:relative;transition:background .2s,transform .2s}.lesson:hover{background:var(--acid);transform:translateY(-8px)}.lesson small{font:12px var(--mono)}.lesson h3{margin:48px 0 8px;font-size:24px}.lesson p{margin:0;color:var(--muted);font-size:14px}.lesson:hover p{color:var(--ink)}
.prompt-lab{padding:80px;background:var(--ink);color:white;border-radius:32px;display:grid;grid-template-columns:1fr 1.4fr;gap:64px}.prompt-intro p:last-child{color:#aaa}.prompt-card{background:#232326;border:1px solid #444;border-radius:16px;padding:32px;position:relative}.prompt-code{font:20px/1.8 var(--mono);padding-bottom:32px}.token{padding:8px 0}.token.object{color:#c9bbff}.token.operation{color:var(--acid)}.token.constraint{color:#8cb0ff}.token.check{color:#ffba8a}.prompt-key{border-top:1px solid #444;padding-top:24px;display:flex;gap:16px;flex-wrap:wrap;font:12px var(--mono);color:#aaa}.prompt-key span{display:flex;align-items:center;gap:8px}.prompt-key i{width:8px;height:8px;border-radius:50%}.k-object{background:#c9bbff}.k-operation{background:var(--acid)}.k-constraint{background:#8cb0ff}.k-check{background:#ffba8a}.copy-button{margin-top:24px;min-height:48px;padding:0 24px;border:0;border-radius:999px;background:white;color:var(--ink);font-weight:700;cursor:pointer}
.glossary-section{margin-top:128px;padding:128px 0;background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.glossary-tools{display:flex;gap:24px;align-items:center;margin-bottom:48px}.search-box{height:56px;min-width:320px;flex:1;border:1px solid var(--ink);border-radius:999px;display:flex;align-items:center;padding:0 24px;gap:16px;background:white}.search-box svg{width:20px;fill:none;stroke:currentColor;stroke-width:1.8}.search-box input{width:100%;border:0;outline:0;background:transparent;font:16px var(--sans)}.filters{display:flex;gap:8px;overflow-x:auto;padding:8px 0}.filter{height:48px;white-space:nowrap;border:1px solid var(--line);border-radius:999px;background:transparent;padding:0 16px;font:600 13px var(--sans);cursor:pointer}.filter[aria-pressed="true"]{background:var(--ink);color:white;border-color:var(--ink)}.glossary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.term-card{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;min-height:320px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.term-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(21,21,21,.08)}.term-top{display:flex;justify-content:space-between;gap:16px}.term-index{font:12px var(--mono);color:var(--muted)}.term-category{font:11px var(--mono);text-transform:uppercase;color:var(--violet)}.term-card h3{font-size:28px;letter-spacing:-.04em;margin:24px 0 8px}.term-card .also{min-height:24px;margin:0 0 16px;color:var(--muted);font:12px var(--mono)}.term-card>.definition{margin:0 0 24px}.where{border-top:1px solid var(--line);padding-top:16px;margin-top:auto}.where b,.astra-box b,.borrow b{display:block;margin-bottom:8px;font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.06em}.where p{margin:0;color:var(--muted);font-size:13px}.astra-box{margin-top:16px;padding:16px;background:#f0edff;border-radius:8px;font-size:13px}.astra-box p{margin:0}.term-actions{display:flex;gap:8px;margin-top:16px}.mini-button{height:40px;padding:0 16px;border:1px solid var(--line);background:white;border-radius:999px;font:600 12px var(--sans);cursor:pointer}.mini-button:hover{border-color:var(--ink)}.empty-state{text-align:center;padding:96px 0}.empty-state h3{font-size:32px;margin:0}.empty-state p{color:var(--muted)}
.evidence-note{margin:-32px 0 48px;padding:16px 24px;border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;gap:24px;font:12px var(--mono)}.evidence-note strong{font-family:var(--sans)}.evidence-note span{display:flex;align-items:center;gap:8px}.evidence-note i{width:8px;height:8px;border-radius:50%}.direct-dot{background:var(--violet)}.transfer-dot{background:var(--acid);border:1px solid var(--ink)}.evidence-note>b{margin-left:auto;font-weight:500;color:var(--muted)}.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.case-card{border:1px solid var(--ink);border-radius:16px;padding:32px;min-height:440px;display:flex;flex-direction:column}.case-card.featured{background:var(--violet);color:white}.case-card.direct-case{background:#ebe6ff}.case-number{font:12px var(--mono);margin-bottom:48px}.case-type{font:11px var(--mono);text-transform:uppercase;letter-spacing:.06em}.case-type:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:8px}.direct-label:before{background:var(--violet)}.featured .direct-label:before{background:var(--acid)}.transfer-label:before{background:var(--acid);border:1px solid var(--ink)}.case-card h3{font-size:32px;margin:8px 0 16px;letter-spacing:-.04em}.case-card>p{max-width:560px}.borrow{margin-top:auto;padding:16px 0;border-top:1px solid currentColor}.borrow p{margin:0}.case-card a{margin-top:24px;font-weight:700;text-underline-offset:4px}.watch-section{padding:128px 0;background:var(--ink);color:white}.watch-section .section-heading>p{color:#aaa}.watch-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.video-card{background:#222226;border:1px solid #444;border-radius:16px;overflow:hidden}.video-visual{height:224px;background:linear-gradient(135deg,var(--violet),#302466);display:flex;align-items:center;justify-content:center;position:relative;text-decoration:none}.video-visual.lighting{background:radial-gradient(circle at 72% 32%,#fff5b8,transparent 16%),linear-gradient(135deg,#684400,#211d18)}.video-visual.motion{background:linear-gradient(160deg,#232329,#3b315e)}.video-visual.motion:before{content:"";position:absolute;inset:48px;background:linear-gradient(165deg,transparent 48%,var(--acid) 49%,var(--acid) 51%,transparent 52%);opacity:.8}.video-visual.nodes{background:radial-gradient(circle at 24% 32%,var(--acid) 0 8px,transparent 9px),radial-gradient(circle at 72% 64%,#b7a9ff 0 8px,transparent 9px),linear-gradient(135deg,#1c3330,#18211f)}.video-visual.nodes:before{content:"";position:absolute;width:48%;height:32%;border:2px solid rgba(255,255,255,.3);border-width:2px 0;transform:rotate(18deg)}.video-visual>b{position:absolute;right:16px;bottom:16px;padding:8px 16px;border-radius:999px;background:rgba(0,0,0,.7);font:11px var(--mono)}.play-mark{width:64px;height:64px;border-radius:50%;background:white;color:var(--ink);display:grid;place-items:center;position:relative;z-index:2;transition:transform .2s}.video-visual:hover .play-mark{transform:scale(1.08)}.play-mark svg{width:32px;fill:currentColor}.video-copy{padding:32px}.video-step{color:#aaa;font:11px var(--mono);text-transform:uppercase}.video-copy h3{font-size:28px;line-height:1.1;margin:16px 0}.video-copy>p{color:#bbb}.watch-task{margin:24px 0;padding:16px;border-left:2px solid var(--acid);background:#2b2b30}.watch-task b{font:500 11px var(--mono);text-transform:uppercase;color:var(--acid)}.watch-task p{margin:8px 0 0}.video-copy>a{font-weight:700;text-underline-offset:4px}.review-loop{margin-top:128px;margin-bottom:128px;padding:80px;border-radius:32px;background:var(--acid)}.review-loop ol{list-style:none;padding:0;margin:64px 0 0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.review-loop li{padding:24px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);min-height:160px}.review-loop li>span{font:12px var(--mono)}.review-loop li div{margin-top:32px}.review-loop li b{font-size:20px}.review-loop li p{margin:8px 0 0;font-size:13px}
footer{padding:48px 0 176px;display:grid;grid-template-columns:1fr 2fr 1fr;gap:32px;border-top:1px solid var(--line);align-items:center}footer div{display:flex;align-items:center;gap:8px}footer p{margin:0;color:var(--muted);font-size:13px}footer>a{text-align:right;font-weight:700;font-size:13px}
.reader{position:fixed;z-index:50;left:16px;right:16px;bottom:16px;height:112px;padding:16px 24px;background:rgba(21,21,21,.96);color:white;border:1px solid #444;border-radius:16px;backdrop-filter:blur(20px);transform:translateY(calc(100% + 32px));transition:transform .25s ease;box-shadow:0 24px 64px rgba(0,0,0,.3)}.reader[data-open]{transform:none}.reader-progress{height:24px;display:grid;grid-template-columns:48px 1fr 48px;gap:8px;align-items:center;color:#aaa;font:11px var(--mono)}.reader-progress span:last-child{text-align:right}.scrub{height:16px;padding:0;border:0;background:transparent;position:relative;cursor:pointer}.scrub:before{content:"";position:absolute;left:0;right:0;top:7px;height:2px;background:#555}.scrub i{position:absolute;left:0;top:7px;height:2px;width:0;background:var(--acid)}.reader-controls{display:grid;grid-template-columns:48px 48px 48px 48px 120px 1fr auto;gap:8px;align-items:center}.reader-icon,.reader-close{height:48px;border:1px solid #555;border-radius:999px;background:transparent;color:white;display:grid;place-items:center;cursor:pointer}.reader-icon.primary{background:var(--acid);color:var(--ink);border-color:var(--acid)}.reader-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8}.reader-icon.primary svg{fill:currentColor;stroke:none}.reader-controls label{height:48px;border:1px solid #555;border-radius:999px;padding:0 16px;display:flex;align-items:center;gap:8px}.reader-controls label span{display:none}.reader-controls select{width:100%;border:0;background:transparent;color:white;font:12px var(--mono);outline:0}.reader-now{min-width:0;padding:0 16px}.reader-now span{display:block;color:#aaa;font:10px var(--mono);text-transform:uppercase}.reader-now strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.reader-close{padding:0 24px;font:600 12px var(--sans)}.speaking{background:rgba(223,255,0,.3);box-shadow:0 0 0 4px rgba(223,255,0,.3);border-radius:4px}
@media(max-width:960px){.hero{grid-template-columns:1fr;min-height:auto}.viewport-demo{height:480px}.lesson-strip{grid-template-columns:repeat(2,1fr)}.prompt-lab{grid-template-columns:1fr;padding:48px}.glossary-tools{align-items:stretch;flex-direction:column}.glossary-grid{grid-template-columns:repeat(2,1fr)}.evidence-note{align-items:flex-start;flex-wrap:wrap}.evidence-note>b{margin-left:0}.review-loop ol{grid-template-columns:repeat(2,1fr)}footer{grid-template-columns:1fr 1fr}footer p{grid-column:1/-1;grid-row:2}.reader-controls{grid-template-columns:48px 48px 48px 48px 104px 1fr}.reader-close{display:none}}
@media(max-width:640px){.wrap{width:min(100% - 32px,1200px)}.site-header{height:64px;padding:0 16px}.site-header nav{display:none}.listen-launch{min-height:40px;padding:0 16px}.hero{padding:64px 0;gap:48px}.hero h1{font-size:48px}.lede{font-size:18px}.viewport-demo{height:400px}.signal{align-items:flex-start;flex-direction:column;gap:16px}.signal i{display:none}.path,.patterns{padding:96px 0}.section-heading{align-items:flex-start;flex-direction:column;gap:24px;margin-bottom:48px}.glossary-meta{text-align:left}.lesson-strip,.glossary-grid,.case-grid,.watch-grid{grid-template-columns:1fr}.evidence-note{margin-top:-16px;flex-direction:column;gap:16px}.prompt-lab{width:calc(100% - 32px);padding:32px 24px}.prompt-code{font-size:16px}.glossary-section{margin-top:96px;padding:96px 0}.search-box{min-width:0}.watch-section{padding:96px 0}.video-visual{height:192px}.review-loop{width:calc(100% - 32px);padding:48px 24px}.review-loop ol{grid-template-columns:1fr}.review-loop li{min-height:128px}footer{grid-template-columns:1fr;padding-bottom:192px}footer p{grid-row:auto}footer>a{text-align:left}.reader{height:160px}.reader-controls{grid-template-columns:repeat(5,48px);justify-content:center}.reader-now{grid-column:1/-1;grid-row:2;text-align:center}.reader-open{padding-bottom:176px}.reader-controls label{padding:0 8px}}

/* Section introductions follow a single reading column: heading, then explanation. */
.section-heading{display:block}
.section-heading>p{max-width:720px;margin:24px 0 0}
.term-visual{aspect-ratio:200/168;margin:0 0 24px;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:#f1efe8}
.term-visual picture,.term-visual img{display:block;width:100%;height:100%}.term-visual img{object-fit:contain}

.eyebrow,.term-category,.where b,.astra-box b,.borrow b,.case-type,.video-step,.watch-task b,.reader-now span,.success-check b{text-transform:none}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important}}