:root{
  --red:#FF3410;
  --black:#1A1A1A;
  --purple:#7362FF;
  --paper:#F6F5F2;
  --white:#FFFFFF;
  --ink:#1A1A1A;
  --muted:#6D6D73;
  --line:#DEDCD6;
  --soft-red:#FFF0EC;
  --soft-purple:#F0EEFF;
  --green:#0F9D65;
  --yellow:#F6C945;
  --radius:22px;
  --shadow:0 18px 50px rgba(26,26,26,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Plus Jakarta Sans",Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-height:100vh}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
[hidden]{display:none!important}
.app-shell{min-height:100vh}
.topbar{position:sticky;top:0;z-index:50;display:grid;grid-template-columns:minmax(220px,auto) auto minmax(160px,1fr) auto;gap:18px;align-items:center;padding:14px 28px;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;background:none;border:0;padding:0;color:var(--ink);text-align:left}
.brand img{width:150px;height:auto}.brand-divider{width:1px;height:28px;background:var(--line)}.brand-product{font-weight:800;font-size:13px;letter-spacing:-.01em}
.topbar-center{display:flex;align-items:center;gap:10px}.progress-track{height:7px;flex:1;background:#ECEAE5;border-radius:999px;overflow:hidden}.progress-track span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),var(--purple));transition:width .3s ease}.progress-label{font-size:11px;color:var(--muted);font-weight:700;white-space:nowrap}
.player-chip{justify-self:end;display:flex;align-items:center;gap:10px}.player-avatar{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--black);color:#fff;font-weight:800}.player-chip strong{display:block;font-size:12px}.player-chip small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.icon-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink)}
.screen{display:none}.screen.active{display:block}
.hero{max-width:1280px;margin:0 auto;padding:76px 32px 54px;display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}.eyebrow{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.17em;color:var(--red);text-transform:uppercase}.hero h1{font-size:clamp(44px,6.6vw,92px);line-height:.94;letter-spacing:-.055em;margin:16px 0 24px;max-width:830px}.hero h1 span{color:#9B9994}.hero p{max-width:680px;color:#57575D;font-size:17px;line-height:1.65}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.hero-note{display:flex;align-items:center;gap:9px;margin-top:22px;color:var(--muted);font-size:12px}.hero-note span{width:7px;height:7px;border-radius:50%;background:var(--purple)}
.btn{min-height:44px;border-radius:999px;border:1px solid var(--line);padding:11px 18px;font-weight:800;transition:.18s ease}.btn.primary{background:var(--black);color:#fff;border-color:var(--black)}.btn.primary:hover{transform:translateY(-1px);background:#000}.btn.red{background:var(--red);color:#fff;border-color:var(--red)}.btn.purple{background:var(--purple);color:#fff;border-color:var(--purple)}.btn.ghost{background:#fff;color:var(--ink)}.btn.ghost:hover{border-color:#BEBBB4}.btn.small{min-height:38px;padding:8px 13px;font-size:12px}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.hero-visual{position:relative;min-height:450px;border-radius:34px;background:var(--black);overflow:hidden;box-shadow:var(--shadow)}.visual-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:42px 42px}.hero-visual:before{content:"";position:absolute;width:330px;height:330px;border-radius:50%;background:var(--red);right:-100px;top:-90px;opacity:.9}.hero-visual:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:var(--purple);left:-90px;bottom:-120px;opacity:.7}.visual-card{position:absolute;z-index:2;width:165px;height:180px;border-radius:22px;padding:18px;background:#fff;color:var(--ink);display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 18px 40px rgba(0,0,0,.22)}.visual-card small{font-weight:800;color:#8B8983}.visual-card strong{font-size:48px;letter-spacing:-.05em}.visual-card span{font-size:12px;font-weight:800}.vc-a{left:9%;top:13%;transform:rotate(-6deg)}.vc-b{right:9%;top:24%;transform:rotate(7deg);background:var(--soft-purple)}.vc-c{left:33%;bottom:7%;transform:rotate(3deg);background:var(--soft-red)}.hero-stamp{position:absolute;z-index:3;right:33%;bottom:31%;display:grid;place-items:center;width:118px;height:118px;border-radius:50%;background:var(--red);color:#fff;border:10px solid rgba(255,255,255,.12)}.hero-stamp b{font-size:31px;line-height:1}.hero-stamp span{font-size:10px;font-weight:800}
.level-map-wrap{max-width:1280px;margin:0 auto;padding:20px 32px 90px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:26px}.section-heading h2{font-size:36px;letter-spacing:-.035em;margin:8px 0 0}.section-heading p{max-width:460px;text-align:right;color:var(--muted);font-size:12px;line-height:1.6}.level-map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.level-card{position:relative;min-height:250px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;overflow:hidden;transition:.2s ease;box-shadow:0 8px 24px rgba(26,26,26,.035)}.level-card:hover{transform:translateY(-3px);border-color:#BEBBB4;box-shadow:var(--shadow)}.level-card.completed{border-color:rgba(15,157,101,.35)}.level-card.next{outline:2px solid var(--red);outline-offset:2px}.level-number{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.13em}.level-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;background:var(--soft-red);color:var(--red);font-size:28px;margin:28px 0 24px}.level-card:nth-child(3n+2) .level-icon{background:var(--soft-purple);color:var(--purple)}.level-card:nth-child(3n) .level-icon{background:#F1F1EF;color:var(--black)}.level-card h3{margin:0 0 9px;font-size:21px;letter-spacing:-.025em}.level-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.55;min-height:56px}.level-card footer{display:flex;align-items:center;justify-content:space-between;margin-top:24px}.status{font-size:10px;font-weight:800;color:var(--red);letter-spacing:.04em}.status.done{color:var(--green)}.level-card .play{width:42px;height:42px;border-radius:50%;border:0;background:var(--black);color:#fff;font-size:15px}.level-card.completed:after{content:"✓";position:absolute;right:-12px;bottom:-38px;font-size:130px;color:rgba(15,157,101,.055);font-weight:800}
.game-header{max-width:1280px;margin:0 auto;padding:34px 32px 18px;display:grid;grid-template-columns:150px 1fr 118px;gap:20px;align-items:center}.back-btn{justify-self:start;background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 14px;font-size:12px;font-weight:800}.game-heading{text-align:center}.game-heading h2{font-size:34px;letter-spacing:-.035em;margin:6px 0 7px}.game-heading p{margin:0;color:var(--muted);font-size:12px}.score-badge{justify-self:end;width:98px;border-radius:18px;background:var(--black);color:#fff;padding:10px 14px}.score-badge span{display:block;font-size:9px;text-transform:uppercase;letter-spacing:.14em;color:#BDBDBD}.score-badge strong{font-size:25px}
.game-shell{max-width:1280px;margin:0 auto;padding:16px 32px 80px}.game-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:18px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:0 10px 30px rgba(26,26,26,.035)}.panel.sticky{position:sticky;top:92px}.panel-title{display:flex;justify-content:space-between;gap:18px;align-items:start;margin-bottom:18px}.panel h3{margin:0 0 7px;font-size:18px;letter-spacing:-.02em}.panel p{color:var(--muted);font-size:12px;line-height:1.55;margin:0}.tag{display:inline-flex;align-items:center;min-height:28px;padding:6px 10px;border-radius:999px;background:var(--soft-purple);color:var(--purple);font-size:9px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}.tag.red{background:var(--soft-red);color:var(--red)}
.control-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.control{padding:14px;border:1px solid var(--line);border-radius:16px;background:#FCFCFB}.control label,.field-label{display:flex;justify-content:space-between;gap:10px;font-size:11px;font-weight:800;color:#444}.control output{color:var(--red)}input[type="range"]{width:100%;accent-color:var(--red);margin-top:12px}input[type="color"]{width:48px;height:36px;padding:2px;border:1px solid var(--line);border-radius:10px;background:#fff}select,input[type="text"],input:not([type]),textarea,.modal input{width:100%;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:12px;padding:11px 12px;font-size:13px;outline:none}textarea{min-height:94px;resize:vertical;line-height:1.5}select:focus,input:focus,textarea:focus{border-color:var(--purple);box-shadow:0 0 0 3px rgba(115,98,255,.09)}
.game-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.metric-list{display:grid;gap:9px;margin-top:16px}.metric{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid #EEECE7;font-size:11px}.metric:last-child{border-bottom:0}.metric span{color:var(--muted)}.metric strong{font-size:11px}.good{color:var(--green)!important}.bad{color:#C63F2C!important}.mid{color:#A16F00!important}.feedback-box{margin-top:16px;border-radius:16px;background:#F7F6F2;padding:14px;font-size:12px;line-height:1.55;color:#4C4B47}.feedback-box strong{color:var(--ink)}
.creative-preview{position:relative;min-height:560px;border-radius:22px;overflow:hidden;background:#191919;color:#fff;display:grid;place-items:center;padding:34px}.creative-preview .mock-ad{width:min(100%,460px);aspect-ratio:4/5;background:linear-gradient(145deg,#2b243a,#17151e);border-radius:24px;padding:36px;position:relative;overflow:hidden;box-shadow:0 28px 60px rgba(0,0,0,.25)}.mock-ad:before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:var(--purple);right:-100px;bottom:-60px;opacity:.72}.mock-brand{position:relative;z-index:2;font-size:12px;font-weight:800;letter-spacing:.15em}.mock-title{position:relative;z-index:2;margin-top:120px;font-weight:800;letter-spacing:-.045em;max-width:100%}.mock-copy{position:relative;z-index:2;color:#DAD5E3;margin-top:20px;font-size:15px;line-height:1.5;max-width:80%}.mock-cta{position:absolute;z-index:2;left:36px;bottom:38px;background:var(--red);padding:12px 17px;border-radius:999px;font-size:12px;font-weight:800}
.contrast-card{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:18px;align-items:start}.contrast-visual{background:#F2F0EB;border-radius:22px;padding:16px;display:grid;place-items:center;min-height:590px}.contrast-visual img{width:min(100%,430px);border-radius:18px;box-shadow:0 20px 46px rgba(26,26,26,.14)}.answer-stack{display:grid;gap:10px}.answer-btn{border:1px solid var(--line);background:#fff;border-radius:16px;padding:15px;text-align:left;font-weight:800}.answer-btn:hover{border-color:#9B9994}.answer-btn.selected{border-color:var(--purple);background:var(--soft-purple)}
.layout-stage{position:relative;aspect-ratio:1/1;max-width:650px;margin:0 auto;border-radius:24px;background:linear-gradient(145deg,#EDEBFF,#FCF9F4);border:1px solid var(--line);overflow:hidden;touch-action:none}.layout-safe{position:absolute;inset:7%;border:1px dashed rgba(26,26,26,.18);border-radius:16px;pointer-events:none}.draggable{position:absolute;border:1px solid rgba(26,26,26,.12);background:#fff;border-radius:14px;padding:12px 14px;font-size:12px;font-weight:800;box-shadow:0 8px 24px rgba(26,26,26,.08);user-select:none;touch-action:none}.draggable.selected{outline:2px solid var(--red);outline-offset:2px}.draggable.product{width:34%;height:46%;display:grid;place-items:center;background:var(--black);color:#fff;font-size:14px}.draggable.cta{background:var(--red);color:#fff;border:0}.draggable.logo{background:transparent;box-shadow:none;border-style:dashed}.nudge-pad{display:grid;grid-template-columns:repeat(3,42px);gap:6px;justify-content:center;margin-top:12px}.nudge-pad button{height:42px;border:1px solid var(--line);background:#fff;border-radius:10px}.nudge-pad .empty{visibility:hidden}
.snake-wrap{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:18px}.snake-board{display:grid;place-items:center;background:#F2F0EB;border-radius:24px;padding:16px;min-height:560px}.snake-board canvas{width:min(100%,520px);height:auto;aspect-ratio:1/1;border-radius:18px;background:#fff;border:1px solid var(--line)}.snake-key{display:flex;align-items:center;gap:10px;margin-top:10px;font-size:11px;color:var(--muted)}.head-dot{width:18px;height:18px;border-radius:6px;background:var(--red);border:2px solid #fff;box-shadow:0 0 0 1px var(--line)}.mobile-arrows{display:grid;grid-template-columns:repeat(3,52px);gap:7px;justify-content:center;margin-top:12px}.mobile-arrows button{height:48px;border:1px solid var(--line);background:#fff;border-radius:13px;font-weight:800}.mobile-arrows .empty{visibility:hidden}
.studio-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px}.studio-stage{background:#EFEDE7;border-radius:24px;padding:20px;display:grid;place-items:center;min-height:660px}.studio-art{width:min(100%,500px);aspect-ratio:4/5;border-radius:24px;padding:38px;position:relative;overflow:hidden;box-shadow:0 24px 56px rgba(26,26,26,.12);transition:.16s ease}.studio-art:after{content:"";position:absolute;width:270px;height:270px;border-radius:50%;background:currentColor;opacity:.11;right:-100px;bottom:100px}.studio-art .sa-brand{font-size:12px;font-weight:800;letter-spacing:.13em;position:relative;z-index:2}.studio-art h4{margin:100px 0 18px;max-width:92%;letter-spacing:-.04em;position:relative;z-index:2}.studio-art p{max-width:82%;margin:0;position:relative;z-index:2}.studio-art button{position:absolute;left:38px;bottom:38px;border:0;border-radius:999px;padding:12px 18px;font-weight:800;z-index:2}.color-presets{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}.swatch{width:30px;height:30px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);padding:0}.swatch.active{box-shadow:0 0 0 2px var(--black)}
.error-wrap{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:18px}.error-canvas{position:relative;background:#EFEDE7;border-radius:24px;padding:18px;display:grid;place-items:center;min-height:620px}.error-canvas img{width:min(100%,520px);border-radius:18px;box-shadow:0 20px 48px rgba(26,26,26,.12)}.error-marker{position:absolute;width:34px;height:34px;border-radius:50%;border:3px solid #fff;background:var(--red);color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center;transform:translate(-50%,-50%);box-shadow:0 8px 20px rgba(26,26,26,.2)}.error-hint{border-left:3px solid var(--purple);padding-left:12px;margin-top:14px;color:#4E4D52;font-size:12px;line-height:1.55}
.reference-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.reference-frame{background:#F1EFEA;border-radius:20px;padding:14px}.reference-frame img{border-radius:15px;width:100%}.reference-frame strong{display:block;font-size:11px;margin-bottom:9px}.principle-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:14px}.principle{display:flex;align-items:flex-start;gap:9px;border:1px solid var(--line);border-radius:14px;padding:11px;background:#fff;font-size:11px;line-height:1.4}.principle input{margin-top:2px;accent-color:var(--red)}
.video-carousel{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;gap:10px;align-items:center}.carousel-arrow{height:44px;border-radius:50%;border:1px solid var(--line);background:#fff}.video-slide{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:18px;align-items:center}.video-frame{aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#111}.video-frame iframe{width:100%;height:100%;border:0}.slide-copy h4{font-size:28px;letter-spacing:-.035em;margin:8px 0 12px}.slide-copy p{font-size:13px;line-height:1.6}.abcd-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:14px}.abcd{border-radius:14px;padding:12px;background:#F5F3EE}.abcd b{display:block;font-size:18px}.abcd span{font-size:10px;color:var(--muted)}.video-dots{display:flex;justify-content:center;gap:6px;margin-top:14px}.video-dots button{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:#CCC9C2}.video-dots button.active{background:var(--red)}
.xray-stage{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:18px;margin-top:18px}.xray-player{position:relative;aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#111}.xray-player iframe{width:100%;height:100%;border:0}.audio-cover{position:absolute;inset:0;background:#111;color:#fff;display:grid;place-items:center;text-align:center;padding:26px}.audio-cover strong{font-size:28px}.audio-cover span{display:block;color:#AAA;font-size:12px;margin-top:8px}.round-tabs{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:12px}.round-tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 11px;font-size:10px;font-weight:800}.round-tab.active{background:var(--black);color:#fff;border-color:var(--black)}.round-panel{display:none}.round-panel.active{display:block}.question{margin-top:11px}.question label{display:block;font-size:11px;font-weight:800;margin-bottom:7px}.yt-controls{display:flex;gap:8px;margin-top:10px}.storyboard{overflow:auto;margin-top:14px}.storyboard table{width:100%;border-collapse:collapse;min-width:760px}.storyboard th,.storyboard td{border:1px solid var(--line);padding:8px;vertical-align:top;font-size:10px}.storyboard th{background:#F3F1EC;text-align:left}.storyboard textarea,.storyboard select{min-width:110px;font-size:10px;padding:8px;min-height:72px}
.boss-shell{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:18px}.boss-stage{background:#EEECE7;border-radius:24px;padding:20px;display:grid;place-items:center;min-height:650px}.boss-ad{position:relative;width:min(100%,500px);aspect-ratio:4/5;border-radius:24px;overflow:hidden;background:#ddd;box-shadow:0 24px 58px rgba(26,26,26,.14)}.boss-ad>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.boss-copy{position:absolute;inset:0;padding:34px;z-index:2}.boss-copy .boss-brand{font-size:11px;font-weight:800;letter-spacing:.13em}.boss-copy h4{margin:92px 0 16px;max-width:82%;font-size:58px;line-height:.92;letter-spacing:-.05em}.boss-copy p{max-width:72%;font-size:14px;line-height:1.45}.boss-copy .boss-cta{position:absolute;left:34px;bottom:34px;border-radius:999px;padding:11px 15px;background:var(--red);color:#fff;font-size:11px;font-weight:800}.boss-copy .boss-badge{position:absolute;right:28px;top:28px;background:#fff;border-radius:999px;padding:8px 10px;font-size:9px;font-weight:800}.boss-tools{display:grid;gap:9px}.tool-toggle{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:12px;background:#fff;font-size:11px;font-weight:700}.tool-toggle input{accent-color:var(--red)}
.result-card{margin-top:18px;border-radius:24px;background:var(--black);color:#fff;padding:24px}.result-head{display:flex;justify-content:space-between;gap:18px;align-items:start}.result-head h3{font-size:28px;letter-spacing:-.035em;margin:7px 0 8px}.result-head p{margin:0;color:#C6C6C6;max-width:720px}.result-score{display:grid;place-items:center;width:92px;height:92px;border-radius:50%;background:var(--red);font-size:28px;font-weight:800;flex:0 0 auto}.result-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:18px}.result-metric{background:#252525;border-radius:14px;padding:12px}.result-metric span{display:block;color:#9F9F9F;font-size:9px;text-transform:uppercase;letter-spacing:.08em}.result-metric strong{display:block;font-size:14px;margin-top:5px}.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.result-card .btn.ghost{background:transparent;color:#fff;border-color:#494949}.result-card .btn.primary{background:#fff;color:#111;border-color:#fff}
.modal-backdrop{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.45);display:grid;place-items:center;padding:20px}.modal{width:min(100%,440px);background:#fff;border-radius:24px;padding:24px;box-shadow:0 30px 90px rgba(0,0,0,.28)}.modal h2{font-size:26px;letter-spacing:-.03em;margin:8px 0}.modal p{color:var(--muted);font-size:12px;line-height:1.55}.modal .field-label{margin:18px 0 7px}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:16px}.toast{position:fixed;left:50%;bottom:24px;z-index:200;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--black);color:#fff;padding:11px 15px;border-radius:999px;font-size:11px;font-weight:700;transition:.2s ease}.toast.show{opacity:1;transform:translate(-50%,0)}
@media (max-width:1020px){.topbar{grid-template-columns:1fr auto}.topbar-center{grid-column:1/-1;grid-row:2}.hero{grid-template-columns:1fr}.hero-visual{min-height:390px}.level-map{grid-template-columns:repeat(2,minmax(0,1fr))}.game-grid,.snake-wrap,.studio-layout,.error-wrap,.xray-stage,.boss-shell{grid-template-columns:1fr}.panel.sticky{position:static}.contrast-card,.video-slide{grid-template-columns:1fr}.reference-grid{grid-template-columns:1fr 1fr}.result-metrics{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){.topbar{padding:12px 16px;gap:12px}.brand img{width:118px}.brand-divider,.brand-product{display:none}.player-chip div{display:none}.hero{padding:52px 18px 38px}.hero h1{font-size:48px}.hero-visual{min-height:340px}.visual-card{width:130px;height:145px}.visual-card strong{font-size:38px}.hero-stamp{width:94px;height:94px}.level-map-wrap{padding:10px 18px 70px}.section-heading{display:block}.section-heading p{text-align:left;margin-top:10px}.level-map{grid-template-columns:1fr}.game-header{padding:26px 18px 14px;grid-template-columns:1fr auto}.game-heading{grid-column:1/-1;grid-row:2;text-align:left}.score-badge{grid-column:2;grid-row:1}.game-shell{padding:10px 18px 70px}.panel{padding:16px}.control-grid{grid-template-columns:1fr}.principle-grid{grid-template-columns:1fr}.reference-grid{grid-template-columns:1fr}.abcd-grid{grid-template-columns:1fr 1fr}.result-head{display:block}.result-score{margin-top:16px}.result-metrics{grid-template-columns:1fr 1fr}.creative-preview{padding:18px;min-height:500px}.studio-stage,.boss-stage,.snake-board,.error-canvas{padding:12px;min-height:auto}.contrast-visual{min-height:auto}.video-carousel{grid-template-columns:36px minmax(0,1fr) 36px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}


/* Presentation mode */
.mode-switch{display:flex;align-items:center;gap:6px;padding:5px;border:1px solid var(--line);border-radius:999px;background:#fff;box-shadow:var(--shadow-xs)}
.mode-btn{height:40px;padding:0 16px;border:0;border-radius:999px;background:transparent;color:var(--muted);font-weight:800;font-size:12px;letter-spacing:.02em}.mode-btn.active{background:var(--black);color:#fff}
.slides-shell{padding:32px 24px 80px;display:grid;gap:18px}.slides-hero{display:flex;justify-content:space-between;gap:20px;align-items:end;padding:18px 8px 0}.slides-hero h1{font-size:56px;letter-spacing:-.05em;margin:8px 0 10px}.slides-subtitle{font-size:22px;line-height:1.2;color:var(--muted);margin:0}.slides-hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.deck-stage,.thumbs-section{padding:18px}.deck-frame-wrap{display:grid;grid-template-columns:52px minmax(0,1fr) 52px;gap:12px;align-items:center}.deck-frame{background:#0c0c0c;border-radius:20px;padding:16px;display:grid;place-items:center;min-height:440px}.deck-image{width:100%;height:auto;max-height:70vh;object-fit:contain;border-radius:12px;box-shadow:0 14px 34px rgba(0,0,0,.18)}.deck-nav{width:52px;height:52px;border:1px solid var(--line);background:#fff;border-radius:50%;font-weight:800;font-size:18px}.deck-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:14px}.deck-thumbs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.deck-thumb{display:grid;gap:8px;align-content:start;text-align:left;border:1px solid var(--line);background:#fff;border-radius:16px;padding:10px;cursor:pointer}.deck-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;border:1px solid #e6e2da}.deck-thumb span{font-size:10px;font-weight:800;color:var(--red);letter-spacing:.08em}.deck-thumb small{font-size:11px;line-height:1.35;color:var(--muted)}.deck-thumb.active{box-shadow:0 0 0 2px var(--red);border-color:transparent}.presentation-overlay{position:fixed;inset:0;z-index:300;background:#050505;color:#fff;padding:16px;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:14px}.presentation-open{overflow:hidden}.presentation-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px}.presentation-toolbar strong{display:block;font-size:18px}.presentation-toolbar small{display:block;color:#b8b8b8;margin-top:3px}.presentation-toolbar-actions{display:flex;gap:10px}.presentation-toolbar .btn.ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#fff}.presentation-toolbar .btn.primary{background:#fff;border-color:#fff;color:#111}.presentation-stage{display:grid;place-items:center;min-height:0}.presentation-image{max-width:100%;max-height:100%;object-fit:contain;border-radius:12px;box-shadow:0 24px 80px rgba(0,0,0,.45)}.presentation-strip{display:flex;gap:10px;overflow:auto;padding-bottom:4px}.presentation-thumb{padding:0;border:1px solid rgba(255,255,255,.12);background:#151515;border-radius:12px;overflow:hidden;flex:0 0 140px}.presentation-thumb img{width:100%;height:84px;object-fit:cover;display:block}.presentation-thumb.active{box-shadow:0 0 0 2px var(--red)}
@media (max-width:1020px){.slides-hero{display:block}.slides-hero-actions{margin-top:14px;justify-content:flex-start}.deck-thumbs{grid-template-columns:repeat(3,minmax(0,1fr))}.deck-frame-wrap{grid-template-columns:44px minmax(0,1fr) 44px}}
@media (max-width:700px){.mode-switch{grid-column:1/-1;order:3;justify-self:start}.slides-shell{padding:18px 16px 72px}.slides-hero h1{font-size:40px}.slides-subtitle{font-size:18px}.deck-thumbs{grid-template-columns:repeat(2,minmax(0,1fr))}.presentation-thumb{flex-basis:110px}.presentation-thumb img{height:68px}}


/* Documentation · ABCD */
.docs-shell{max-width:1280px;margin:0 auto;padding:38px 32px 90px}.docs-hero{display:flex;justify-content:space-between;gap:30px;align-items:flex-end;padding:18px 4px 28px}.docs-hero h1{font-size:clamp(42px,5.4vw,74px);line-height:.98;letter-spacing:-.05em;margin:12px 0 16px;max-width:940px}.docs-lead{max-width:820px;font-size:18px;line-height:1.65;color:#57575D;margin:0}.docs-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.docs-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:22px;align-items:start}.docs-toc{position:sticky;top:96px;padding:18px;display:grid;gap:6px}.docs-toc a{text-decoration:none;color:var(--ink);padding:10px 12px;border-radius:12px;font-size:12px;font-weight:700}.docs-toc a:hover{background:var(--soft-red);color:var(--red)}.docs-content{display:grid;gap:18px}.docs-block{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px;scroll-margin-top:110px}.docs-intro{background:linear-gradient(135deg,#fff 0%,#fff7f4 65%,#f2efff 100%)}.docs-kicker{font-size:10px;font-weight:800;letter-spacing:.16em;color:var(--red);margin-bottom:9px}.docs-block h2{font-size:34px;letter-spacing:-.04em;margin:0 0 14px}.docs-block>p{font-size:14px;line-height:1.7;color:#55555B}.docs-callout{display:grid;grid-template-columns:140px 1fr;gap:18px;margin-top:18px;background:var(--black);color:#fff;border-radius:18px;padding:18px}.docs-callout strong{color:#ff7a5e}.docs-callout span{line-height:1.55;font-size:13px}.abcd-doc-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.abcd-doc-card{display:grid;grid-template-columns:62px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;scroll-margin-top:110px}.abcd-letter{width:56px;height:56px;border-radius:18px;background:var(--red);color:#fff;display:grid;place-items:center;font-size:28px;font-weight:800}.abcd-doc-card:nth-child(2) .abcd-letter{background:var(--purple)}.abcd-doc-card:nth-child(3) .abcd-letter{background:var(--black)}.abcd-doc-card:nth-child(4) .abcd-letter{background:#f1b91f;color:#111}.abcd-doc-card h3{font-size:24px;letter-spacing:-.035em;margin:5px 0 10px}.abcd-doc-card p{font-size:12px;line-height:1.65;color:#55555B}.abcd-doc-card ul{margin:12px 0 0;padding-left:18px;color:#333;font-size:12px;line-height:1.55}.design-translation{background:#f7f5f1;border-radius:14px;padding:12px;color:#313136!important}.rule-chip{display:inline-block;margin:6px 0 4px;background:var(--black);color:#fff;padding:9px 12px;border-radius:999px;font-size:11px;font-weight:800}.cta-examples{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.cta-examples span{background:var(--soft-red);color:#9f2f1a;border-radius:999px;padding:8px 10px;font-size:10px;font-weight:800}.layers-table{display:grid;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:16px}.layer-row{display:grid;grid-template-columns:190px 1fr;gap:18px;padding:14px 16px;background:#fff;border-bottom:1px solid var(--line);font-size:12px}.layer-row:last-child{border-bottom:0}.layer-row span{color:#56565b}.layer-example{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}.layer-example span{background:#f5f3ef;border-radius:13px;padding:12px;font-size:11px}.objective-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:16px}.objective-grid article{background:#f6f5f2;border:1px solid var(--line);border-radius:16px;padding:15px}.objective-grid span{font-size:12px;font-weight:800;color:var(--red)}.objective-grid p{font-size:11px;line-height:1.55;color:#55555b;margin:7px 0 0}.review-checklist{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:16px}.review-checklist label{display:flex;gap:10px;align-items:flex-start;background:#f7f5f1;border:1px solid var(--line);border-radius:14px;padding:12px;font-size:11px;line-height:1.45}.review-checklist input{margin-top:2px;accent-color:var(--red)}.evidence-note{margin-top:18px;border-left:4px solid var(--purple);background:var(--soft-purple);padding:15px 16px;border-radius:0 14px 14px 0;font-size:11px;line-height:1.6;color:#43434b}.docs-footer-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
@media (max-width:1100px){.topbar{grid-template-columns:1fr auto}.mode-switch{grid-column:1/-1;grid-row:2;justify-self:start}.topbar-center{grid-column:1/-1;grid-row:3}.docs-layout{grid-template-columns:1fr}.docs-toc{position:static;display:flex;overflow:auto;gap:6px}.docs-toc .eyebrow{display:none}.docs-toc a{white-space:nowrap;background:#fff;border:1px solid var(--line)}.abcd-doc-grid{grid-template-columns:1fr}.docs-hero{display:block}.docs-actions{justify-content:flex-start;margin-top:18px}}
@media (max-width:700px){.docs-shell{padding:22px 16px 72px}.docs-hero h1{font-size:40px}.docs-lead{font-size:16px}.docs-block{padding:18px}.docs-block h2{font-size:28px}.abcd-doc-card{grid-template-columns:48px 1fr;padding:16px}.abcd-letter{width:44px;height:44px;font-size:22px;border-radius:14px}.abcd-doc-card h3{font-size:20px}.docs-callout{grid-template-columns:1fr}.layer-row{grid-template-columns:1fr;gap:5px}.layer-example,.objective-grid,.review-checklist{grid-template-columns:1fr}}

/* v5 adjustments */
.topbar{position:static;top:auto;backdrop-filter:none}
.presentation-overlay{grid-template-rows:auto minmax(0,1fr)}
.presentation-strip{display:none!important}
.presentation-stage{padding-bottom:8px}

/* Layout Tetris: restore first-version interaction, Dinametra skin */
.layout-stage.layout-stage-classic{aspect-ratio:auto;min-height:480px;max-width:none;background:linear-gradient(145deg,#F3F1EC 0%,#FFFFFF 58%,#FFF0EC 100%);border:1px solid var(--line);border-radius:18px;overflow:hidden;color:var(--black)}
.layout-element{position:absolute;display:grid;place-items:center;text-align:center;border:2px dashed rgba(26,26,26,.18);background:rgba(255,255,255,.88);border-radius:12px;padding:10px;cursor:grab;touch-action:none;user-select:none;box-shadow:0 8px 22px rgba(26,26,26,.05)}
.layout-element:active{cursor:grabbing}.layout-element.selected{outline:3px solid var(--red);outline-offset:1px;border-color:var(--black)}
.layout-headline strong{font-size:28px;line-height:.98;letter-spacing:-.045em}.layout-headline strong span{color:var(--red)}
.layout-product{background:var(--black);color:#fff;border-style:solid}.layout-support{font-size:12px;line-height:1.45}.layout-cta{background:var(--red);color:#fff;border:0}.layout-logo{background:transparent;border-style:dashed;box-shadow:none}.layout-logo img{width:90%;max-height:42px;object-fit:contain}
.layout-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;justify-content:center}

/* Pinterest benchmark references */
.reference-remix-grid{grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr)}
.pinterest-ref-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:14px}
.pinterest-ref-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:7px;text-align:left;display:grid;gap:7px;min-width:0}.pinterest-ref-card img{width:100%;height:118px;object-fit:cover;border-radius:10px;background:#eee}.pinterest-ref-card span{font-size:10px;line-height:1.3;font-weight:750;color:#555}.pinterest-ref-card.active{box-shadow:0 0 0 2px var(--red);border-color:transparent}
.reference-grid-remix{grid-template-columns:1fr 1fr}.reference-image-shell{min-height:430px;border-radius:15px;overflow:hidden;background:#EEECE7;display:grid;place-items:center}.reference-image-shell img{width:100%;height:100%;max-height:560px;object-fit:contain}.reference-source{display:inline-flex;margin-top:9px;color:var(--red);font-size:10px;font-weight:800;text-decoration:none}.reference-source:hover{text-decoration:underline}

/* Listen-only audio */
.listen-only-card{max-width:460px;width:min(90%,460px);display:grid;gap:12px;justify-items:center}.listen-only-card strong{font-size:30px}.listen-only-card span{max-width:380px;color:#BEBEBE;font-size:12px;line-height:1.55}.listen-only-card audio{width:100%;margin-top:4px}.listen-only-card small{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#858585}

@media (max-width:1020px){.reference-remix-grid{grid-template-columns:1fr}.pinterest-ref-picker{grid-template-columns:repeat(3,1fr)}}
@media (max-width:700px){.pinterest-ref-picker{grid-template-columns:1fr}.pinterest-ref-card{grid-template-columns:92px 1fr;align-items:center}.pinterest-ref-card img{height:74px}.reference-grid-remix{grid-template-columns:1fr}.reference-image-shell{min-height:300px}}

/* v6 · Documentation hub */
.docs-hub-hero{padding-bottom:12px}.docs-hub{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.docs-resource-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;display:flex;flex-direction:column;min-height:310px}.docs-resource-card h2{font-size:28px;letter-spacing:-.04em;margin:6px 0 10px}.docs-resource-card p{font-size:13px;line-height:1.6;color:#5b5b61;margin:0 0 22px}.docs-resource-card .btn{margin-top:auto;align-self:flex-start}.docs-resource-icon{width:64px;height:64px;border-radius:18px;background:var(--black);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;margin-bottom:18px}.docs-resource-card:nth-child(2) .docs-resource-icon{background:var(--purple)}.docs-resource-card:nth-child(3) .docs-resource-icon{background:var(--red)}.docs-panel-view{display:grid;gap:16px}.docs-back{justify-self:start;border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 14px;font:inherit;font-weight:800;cursor:pointer}.docs-story-head{padding:10px 4px 4px}.docs-story-head h1{font-size:clamp(38px,5vw,66px);letter-spacing:-.05em;line-height:1;margin:8px 0 12px}.docs-story-head p{max-width:780px;color:var(--muted);font-size:16px;line-height:1.55}.story-layer-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.story-layer-cards article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px}.story-layer-icon{font-size:32px;margin-bottom:18px}.story-layer-cards article>span{font-size:10px;font-weight:800;letter-spacing:.14em;color:var(--red)}.story-layer-cards h3{font-size:22px;letter-spacing:-.03em;margin:7px 0 10px}.story-layer-cards p{font-size:12px;line-height:1.6;color:#5a5a60}.story-example{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.story-example strong{width:100%;font-size:13px;margin-bottom:2px}.story-example span{background:#f4f2ed;border-radius:999px;padding:9px 12px;font-size:11px}.story-video-section{padding:18px}.story-video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.story-video-card{min-width:0}.story-video-card h4{font-size:16px;line-height:1.3;margin:7px 0 10px}.story-video-card .video-frame{aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#111}.story-video-card .video-frame iframe{width:100%;height:100%;border:0}.video-external-link{display:inline-block;margin-top:8px;font-size:11px;color:var(--red);font-weight:800}.yt-local-fallback{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#f5f3ee}.yt-local-fallback video{width:100%;display:block;background:#111}.yt-fallback-copy{padding:12px;display:grid;gap:6px}.yt-fallback-copy strong{font-size:12px}.yt-fallback-copy span{font-size:10px;line-height:1.45;color:var(--muted)}.yt-fallback-copy a{font-size:10px;font-weight:800;color:var(--red)}.docs-xray-shell{display:grid;gap:16px}.xray-intro-panel{padding:18px}.xray-player video{width:100%;height:100%;object-fit:cover;display:block;background:#111}.listen-only-card audio{width:min(100%,480px);margin-top:14px}.round-help{font-size:12px;color:var(--muted);margin-bottom:12px}.remix-control{margin-bottom:10px}.remix-grid{display:grid;grid-template-columns:120px 1fr;gap:8px;margin-top:8px}.xray-save-note{margin-top:12px}.docs-panel-view .xray-stage{margin-top:12px}
@media (max-width:1000px){.docs-hub{grid-template-columns:1fr 1fr}.story-video-grid{grid-template-columns:1fr 1fr}.story-layer-cards{grid-template-columns:1fr}}
@media (max-width:700px){.docs-hub,.story-video-grid{grid-template-columns:1fr}.docs-resource-card{min-height:auto}.remix-grid{grid-template-columns:1fr}}