:root{color:#172033;background:#f4f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}button,input{font:inherit}button{cursor:pointer}a{color:inherit}main{width:min(1440px,100%);margin:0 auto;padding:28px}.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(340px,.65fr);gap:24px;align-items:stretch;min-height:520px;padding:34px;border-radius:28px;color:#fff;background:linear-gradient(135deg,#0f172ac7,#1d4ed88a),radial-gradient(circle at 18% 20%,#ff8a5b 0 13%,transparent 14%),radial-gradient(circle at 88% 18%,#49d2b1 0 12%,transparent 13%),linear-gradient(135deg,#1e3a8a,#7c3aed 52%,#ef476f);box-shadow:0 26px 70px #232e5638;overflow:hidden}.hero-copy,.hero-panel{min-width:0}.hero-copy{display:flex;flex-direction:column;justify-content:center}.top-row{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}.eyebrow{display:inline-flex;gap:8px;align-items:center;margin:0;color:inherit;font-size:.78rem;font-weight:850;letter-spacing:.12em;line-height:1.35;text-transform:uppercase;opacity:.9}.eyebrow.compact{color:#546179}.hero h1{margin:22px 0 10px;font-size:clamp(3.4rem,9vw,7.2rem);line-height:.9;letter-spacing:0}.hero p{width:min(760px,100%);margin:0;color:#ffffffe6;font-size:clamp(1.05rem,2.3vw,1.45rem);line-height:1.48}.language-switch{display:inline-flex;gap:4px;align-items:center;max-width:100%;padding:6px;border:1px solid rgba(255,255,255,.42);border-radius:999px;background:#ffffff29;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.language-switch button{display:inline-flex;gap:5px;align-items:center;min-height:34px;padding:7px 11px;border:0;border-radius:999px;color:#ffffffdb;background:transparent;font-size:.86rem;font-weight:850}.language-switch button.active{color:#172033;background:#fff}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.primary-action,.secondary-action{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;border-radius:999px;font-weight:850;text-decoration:none}.primary-action{color:#172033;background:#fff}.secondary-action{border:1px solid rgba(255,255,255,.42);background:#ffffff24}.hero-panel{display:flex;flex-direction:column;justify-content:space-between;gap:18px;padding:20px;border:1px solid rgba(255,255,255,.35);border-radius:22px;background:#ffffff24;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.orbit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.orbit-chip{display:flex;gap:9px;align-items:center;min-width:0;min-height:68px;padding:12px;border-radius:16px;color:#172033;background:#ffffffe0;font-weight:850}.orbit-chip span{min-width:0;overflow-wrap:anywhere}.hero-stat{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;padding:18px;border-radius:18px;background:#0f172a6b}.hero-stat strong{font-size:3rem;line-height:1}.hero-stat span{line-height:1.4}.year-strip{display:grid;grid-template-columns:repeat(6,minmax(130px,1fr));gap:10px;margin:20px 0 26px;overflow-x:auto;padding-bottom:4px}.year-pill{display:grid;gap:4px;min-height:74px;padding:13px 14px;border:1px solid #dde5f2;border-radius:16px;color:#334155;background:#fff;box-shadow:0 10px 26px #1e293b12}.year-pill span,.year-pill small{overflow-wrap:anywhere}.year-pill span{font-weight:900}.year-pill small{color:#64748b;font-weight:750}.year-pill.active{color:#fff;border-color:#172033;background:#172033}.year-pill.active small{color:#ffffffc2}.section-grid,.stage-layout,.lab-layout,.source-panel{margin-top:26px}.section-heading{margin-bottom:14px}.section-heading h2{margin:6px 0 0;font-size:clamp(1.55rem,3vw,2.15rem);line-height:1.12;letter-spacing:0}.strand-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.strand-card,.stage-card,.module-sidebar,.module-stage,.source-panel{border:1px solid #dde5f2;border-radius:20px;background:#fff;box-shadow:0 16px 44px #1e293b14}.strand-card{min-height:230px;padding:18px}.card-title{display:flex;gap:10px;align-items:center;margin-bottom:10px}.card-title h3{margin:0;overflow-wrap:anywhere}.strand-card ul{margin:0;padding-left:20px;color:#46556d;line-height:1.5}.strand-card li{margin:8px 0}.tone-coral{--tone: #ff6f61;--tone-soft: #fff0ed}.tone-blue{--tone: #2f80ed;--tone-soft: #ecf5ff}.tone-green{--tone: #16a085;--tone-soft: #ecfbf7}.tone-violet{--tone: #7c3aed;--tone-soft: #f3edff}.tone-gold{--tone: #c47b00;--tone-soft: #fff7df}.tone-pink{--tone: #d9468f;--tone-soft: #fff0f7}.strand-card{border-top:7px solid var(--tone);background:linear-gradient(180deg,var(--tone-soft),#fff 42%)}.strand-card svg,.orbit-chip svg,.module-icon svg,.module-badge svg{color:var(--tone)}.stage-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.stage-card{display:grid;grid-template-columns:auto 1fr;gap:14px;padding:18px}.stage-index{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;color:#fff;background:#172033;font-weight:950}.stage-card h3,.stage-card p{margin:0}.stage-card p{margin-top:6px;color:#5b677c;line-height:1.45}.move-list{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.move-list span{padding:6px 9px;border-radius:999px;color:#334155;background:#eef4ff;font-size:.84rem;font-weight:800}.lab-layout{display:grid;grid-template-columns:minmax(310px,.36fr) minmax(0,.64fr);gap:18px;align-items:start}.module-sidebar,.module-stage{padding:20px}.module-list{display:grid;gap:10px}.module-card{display:grid;grid-template-columns:auto 1fr;gap:12px;width:100%;min-width:0;padding:14px;border:1px solid #dce4f0;border-radius:16px;color:#172033;background:#f8fbff;text-align:left}.module-card:hover,.module-card.active{border-color:#172033;background:#fff}.module-icon,.module-badge{display:grid;place-items:center;border-radius:14px;background:var(--tone-soft)}.module-icon{width:44px;height:44px}.module-card strong,.module-card small,.module-card span{display:block;min-width:0;overflow-wrap:anywhere}.module-card strong{font-size:1rem}.module-card small{margin-top:3px;color:var(--tone);font-weight:850}.module-card span{margin-top:5px;color:#64748b;line-height:1.35}.all-modules{margin-top:18px;padding-top:16px;border-top:1px solid #e5ecf5}.all-modules p{margin:0 0 10px;color:#5b677c;font-weight:800}.all-modules div{display:flex;gap:8px;flex-wrap:wrap}.mini-module{padding:8px 10px;border:1px solid #dbe4ef;border-radius:999px;color:#334155;background:#fff;font-size:.84rem;font-weight:800}.mini-module.active{color:#fff;border-color:#172033;background:#172033}.module-header{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:start;margin-bottom:18px}.module-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}.module-meta span{padding:6px 9px;border-radius:999px;color:#334155;background:#eef4ff;font-size:.8rem;font-weight:850}.module-header h2,.module-header p{margin:0}.module-header h2{font-size:clamp(1.65rem,3vw,2.3rem);line-height:1.06}.module-header p{margin-top:8px;color:#5b677c;line-height:1.45}.module-badge{width:56px;height:56px}.interactive-grid{display:grid;grid-template-columns:minmax(250px,.34fr) minmax(0,.66fr);gap:16px}.control-panel,.play-surface{min-width:0;border-radius:18px}.control-panel{display:grid;gap:13px;align-content:start;padding:16px;background:#f3f7fc}.control-panel label{display:grid;gap:8px;color:#334155;font-weight:850}.control-panel input[type=range]{width:100%;accent-color:#172033}.control-panel input[type=number]{width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:12px;background:#fff}.control-panel strong{color:#172033}.challenge-box,.metrics,.coordinate-readout{display:grid;gap:8px;padding:13px;border-radius:15px;color:#172033;background:#fff;font-weight:800;line-height:1.35}.challenge-box{grid-template-columns:auto 1fr;align-items:center}.metrics{color:#fff;background:#172033}.play-surface{min-height:420px;padding:18px;background:#fff;border:1px solid #e1e9f4}.harbour{display:grid;align-content:space-between;background:linear-gradient(180deg,#e9fbff,#fff)}.big-number{color:#172033;font-size:clamp(4rem,10vw,7rem);font-weight:950;line-height:1}.blocks-area{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap;min-height:190px;margin:18px 0}.ten-rod{display:grid;grid-template-columns:repeat(2,12px);gap:3px;padding:7px;border-radius:12px;background:#15b8a6}.ten-rod span,.one-cube{width:12px;height:12px;border-radius:4px;background:#ffffffdb}.one-cube{width:26px;height:26px;background:#ff7a59}.number-line{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;font-weight:900}.line-track{position:relative;height:14px;border-radius:999px;background:#dbe7f4}.line-fill{height:100%;border-radius:inherit;background:#172033}.line-marker{position:absolute;top:50%;transform:translate(-50%,-50%);padding:6px 8px;border-radius:999px;color:#fff;background:#ef476f;font-size:.8rem}.segmented,.draw-actions{display:flex;gap:8px;flex-wrap:wrap}.segmented button,.draw-actions button,.wide-button,.survey-row button{min-height:38px;border:1px solid #cbd5e1;border-radius:999px;color:#172033;background:#fff;font-weight:850}.segmented button,.draw-actions button{padding:8px 12px}.segmented button.active,.draw-actions button:hover,.wide-button:hover{color:#fff;border-color:#172033;background:#172033}.feast{display:grid;place-items:center;gap:18px;background:#fff8ec}.pizza{display:grid;place-items:center;width:min(260px,70vw);aspect-ratio:1;border:10px solid #c66a2a;border-radius:50%;box-shadow:inset 0 0 0 4px #ffffff8c,0 16px 34px #c66a2a29}.pizza span{padding:12px 16px;border-radius:999px;background:#fff;font-weight:950}.slice-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.slice{width:38px;height:38px;border:1px solid #e6b36f;border-radius:50%;background:#fff;font-weight:850}.slice.selected{color:#fff;background:#ff7a59}.machine{display:grid;align-content:center;gap:18px;background:linear-gradient(180deg,#eef6ff,#fff)}.machine-rule,.answer-tile{width:fit-content;max-width:100%;padding:12px 15px;border-radius:16px;background:#172033;color:#fff;font-weight:900;overflow-wrap:anywhere}.sequence-row{display:flex;gap:10px;flex-wrap:wrap}.sequence-row span,.answer-tile{display:grid;place-items:center;min-width:58px;min-height:58px;border-radius:18px}.sequence-row span{color:#fff;background:#2f80ed;font-size:1.35rem;font-weight:950}.sequence-row .mystery{background:#94a3b8}.answer-tile.correct{background:#16a085}.park{display:grid;place-items:center;background:#f0fbf6}.garden-grid{display:grid;gap:4px;width:min(100%,560px)}.garden-grid span{aspect-ratio:1;min-width:0;border:1px solid rgba(22,160,133,.34);border-radius:6px;background:#7bd7c4}.survey-list{display:grid;gap:9px}.survey-row{display:grid;grid-template-columns:minmax(0,1fr) 38px 42px 38px;gap:8px;align-items:center;padding:9px;border-radius:14px;background:#fff}.survey-row span{overflow-wrap:anywhere;font-weight:850}.survey-row strong{text-align:center}.chart-studio{display:grid;align-items:end;background:#fbf7ff}.bar-chart{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;align-items:end;width:100%;min-height:330px}.bar-column{display:grid;grid-template-rows:1fr auto;gap:10px;align-items:end;min-width:0;height:100%}.bar{display:grid;align-items:start;justify-items:center;min-height:24px;padding-top:8px;border-radius:12px 12px 6px 6px;color:#fff;background:#7c3aed;font-weight:950}.bar-column span{min-height:42px;text-align:center;color:#334155;font-size:.88rem;font-weight:850;overflow-wrap:anywhere}.chance{display:grid;gap:13px;align-content:center;background:#fffaf0}.chance-row{display:grid;grid-template-columns:auto minmax(74px,.18fr) minmax(0,1fr) auto;gap:10px;align-items:center;min-width:0;padding:12px;border-radius:16px;background:#fff}.prize-dot{width:18px;height:18px;border-radius:50%}.chance-row strong{overflow-wrap:anywhere}.chance-bars{display:grid;gap:7px;min-width:0}.chance-bars span{min-width:fit-content;max-width:100%;padding:5px 8px;border-radius:999px;color:#fff;background:#172033;font-size:.78rem;font-weight:850;white-space:nowrap}.chance-bars span+span{background:#ef476f}.coordinate{display:grid;place-items:center;background:#eef6ff}.coordinate-grid{display:grid;grid-template-columns:repeat(11,minmax(22px,42px));gap:4px;width:min(100%,520px)}.coordinate-grid button{aspect-ratio:1;border:1px solid #c5d7ed;border-radius:8px;background:#fff;font-size:.8rem;font-weight:950}.coordinate-grid button.target{color:#fff;background:#ef476f}.coordinate-grid button.selected{outline:3px solid #172033}.wide-button{width:100%}.source-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.36fr);gap:18px;padding:22px}.source-panel h2,.source-panel p{margin:0}.source-panel h2{margin-top:6px}.source-panel p:last-child{margin-top:8px;color:#5b677c;line-height:1.5}.source-panel ul{display:grid;gap:9px;align-content:center;margin:0;padding-left:20px}.source-panel a{color:#1d4ed8;font-weight:850}@media(max-width:1100px){main{padding:18px}.hero,.lab-layout,.interactive-grid,.source-panel{grid-template-columns:1fr}.strand-grid,.stage-list{grid-template-columns:repeat(2,minmax(0,1fr))}.play-surface{min-height:360px}}@media(max-width:720px){main{padding:12px}.hero{min-height:auto;padding:20px;border-radius:22px}.hero-actions,.top-row,.language-switch,.primary-action,.secondary-action{width:100%}.language-switch{justify-content:space-between}.orbit-grid,.strand-grid,.stage-list{grid-template-columns:1fr}.year-strip{grid-template-columns:repeat(6,minmax(112px,1fr))}.module-header{grid-template-columns:1fr}.module-badge{display:none}.chance-row{grid-template-columns:auto minmax(0,1fr) auto}.chance-bars{grid-column:1 / -1}.bar-chart{gap:8px}}.visual-promises{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.visual-promises span{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:999px;background:#ffffffbd;color:#102333;font-weight:950;box-shadow:0 10px 26px #10233314}.visual-playground{width:100%;max-width:420px;filter:drop-shadow(0 24px 34px rgba(16,35,51,.16))}.float-a{animation:bob 3.1s ease-in-out infinite;transform-origin:center}.float-b{animation:bob 3.8s ease-in-out infinite .25s;transform-origin:center}.float-c{animation:wiggle 3.5s ease-in-out infinite;transform-origin:140px 140px}.bounce-blocks rect{animation:blockPop 1.8s ease-in-out infinite}.bounce-blocks rect:nth-child(2){animation-delay:.16s}.bounce-blocks rect:nth-child(3){animation-delay:.32s}@keyframes bob{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-10px) scale(1.035)}}@keyframes wiggle{0%,to{transform:rotate(-2deg)}50%{transform:rotate(5deg) translateY(-6px)}}@keyframes blockPop{0%,to{transform:translateY(0);opacity:.9}50%{transform:translateY(-8px);opacity:1}}.orbit-grid.pictorial{margin-top:-10px}.orbit-grid.pictorial .orbit-chip b,.picture-mark,.module-picture,.module-title-picture{display:inline-grid;place-items:center;line-height:1}.orbit-grid.pictorial .orbit-chip b{width:42px;height:42px;border-radius:16px;background:#fff;font-size:1.7rem;box-shadow:inset 0 -4px #10233314}.picture-mark{width:54px;height:54px;margin-right:4px;border-radius:20px;background:#ffffffb8;font-size:2rem;box-shadow:0 12px 28px #10233314}.visual-points{display:grid;gap:12px;margin:14px 0 0;padding:0;list-style:none}.visual-points li{display:grid;grid-template-columns:34px 1fr;align-items:center;gap:10px;min-height:46px;padding:10px 12px;border-radius:18px;background:#ffffffbd;color:#263043;font-size:.95rem;line-height:1.32}.visual-points li span{display:grid;place-items:center;width:34px;height:34px;border-radius:12px;color:#fff;background:#102333}.more-points{margin-top:12px}.more-points summary{width:max-content;list-style:none;cursor:pointer;padding:8px 12px;border-radius:999px;background:#102333;color:#fff;font-weight:900}.more-points summary::-webkit-details-marker{display:none}.more-points ul{margin-top:10px}.knowledge-icons{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 14px}.knowledge-icons span{padding:8px 10px;border-radius:14px;background:#fff;color:#344054;font-size:.92rem;font-weight:800;box-shadow:0 8px 22px #1023330f}.stage-index{font-size:1.65rem;animation:bob 3s ease-in-out infinite}.module-picture{margin-right:8px;font-size:1.4rem;vertical-align:-2px}.module-title-picture{margin-right:12px;font-size:2rem;vertical-align:-4px}.module-card{position:relative;overflow:hidden}.module-card:after{content:"";position:absolute;right:-34px;bottom:-34px;width:92px;height:92px;border-radius:50%;background:#ffffff6b;transition:transform .2s ease}.module-card:hover:after,.module-card.active:after{transform:scale(1.28)}.place-value .hundred-block,.place-value .ten-block,.place-value .one-block,.sequence-row span,.data-bar span,.area-grid span,.coordinate-grid button,.chance-row{transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}.place-value .hundred-block:hover,.place-value .ten-block:hover,.place-value .one-block:hover,.sequence-row span:hover,.area-grid span:hover,.coordinate-grid button:hover{transform:translateY(-5px) scale(1.05);filter:brightness(1.06)}.pizza{animation:slowSpin 14s linear infinite}@keyframes slowSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.pizza span{animation:counterSpin 14s linear infinite}@keyframes counterSpin{0%{transform:rotate(0)}to{transform:rotate(-360deg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}}.place-value .hundred-block,.place-value .ten-block,.place-value .one-block{font-size:0;color:transparent;position:relative;overflow:hidden}.place-value .hundred-block{background:linear-gradient(#ffffff33 1px,transparent 1px),linear-gradient(90deg,#ffffff33 1px,transparent 1px),linear-gradient(135deg,#6d5dfc,#4f46e5);background-size:10% 10%,10% 10%,100% 100%}.place-value .hundred-block:after{content:"100";position:absolute;inset:auto 8px 7px auto;color:#fff;font-size:.72rem;font-weight:950;opacity:.92}.place-value .ten-block{background:repeating-linear-gradient(to bottom,#ffffff44 0 1px,transparent 1px 10%),linear-gradient(180deg,#15b8a6,#0f9f8f)}.place-value .ten-block:after{content:"";position:absolute;top:8px;right:7px;bottom:8px;left:7px;border-radius:999px;background:linear-gradient(#fff 0,#fff 0) top/100% 3px no-repeat,linear-gradient(#fff 0,#fff 0) center/100% 3px no-repeat,linear-gradient(#fff 0,#fff 0) bottom/100% 3px no-repeat;opacity:.86}.place-value .one-block{background:radial-gradient(circle at 35% 30%,#fff8,transparent 28%),#ff8a3d}