:root{color-scheme:dark;--bg:#0c1425;--surface:#132039;--surface2:#1a2b49;--ink:#f4f5f2;--muted:#abbacf;--green:#b4ef7b;--line:#2c3e59;--blue:#79c5fa;--radius:16px;font-family:Inter,"Segoe UI",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:4px}input,textarea,select{max-width:100%;width:100%;color:var(--ink);background:#0f1b30;border:1px solid #526781;border-radius:8px;padding:11px 13px}input::placeholder,textarea::placeholder{color:#a9b5c6}input[type=checkbox]{width:18px;height:18px;accent-color:var(--green);flex-shrink:0}label{display:block;font-size:.87rem;color:#d9e3ee;font-weight:600}label input,label select,label textarea{margin-top:6px;font-weight:400}select[multiple]{min-height:90px}fieldset{min-width:0;border:1px solid var(--line);border-radius:12px;padding:20px}legend{padding:0 10px;font-weight:700}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.14;letter-spacing:-.035em}h1{font-size:clamp(2.3rem,4.6vw,4.8rem);font-weight:800}h2{font-size:clamp(1.5rem,2.5vw,2.3rem)}h3{font-size:1.3rem}small{display:block;color:var(--muted)}.muted{color:var(--muted);font-size:.9rem}.sr-only,.skip-link:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip-link:focus{position:fixed;top:10px;left:10px;background:var(--green);color:var(--bg);z-index:30;padding:12px}
.site-header{max-width:1360px;margin:auto;padding:28px 44px;display:flex;justify-content:space-between;gap:30px;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px}.brand-mark{font-size:3rem;line-height:1;color:var(--green)}.brand-kicker{display:block;font-size:.58rem;letter-spacing:.27em;font-weight:700;color:var(--muted)}.brand-title{display:block;font-size:1.3rem;font-weight:900;letter-spacing:.04em}.site-header nav{display:flex;gap:25px;align-items:center;font-size:.85rem;font-weight:600}.site-header nav a[aria-current]{color:var(--green)}.nav-link,.text-button{padding:0;border:0;background:none;color:var(--green);font-weight:600}.inline-form{display:inline}main{max-width:1272px;margin:auto;padding:0 32px 64px;min-height:60vh}.eyebrow{font-size:.67rem;font-weight:800;letter-spacing:.2em;color:var(--green);margin-bottom:20px}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);margin-right:10px;box-shadow:0 0 12px #b4ef7b55}
.hero{display:grid;grid-template-columns:1.15fr 1fr;gap:55px;padding:68px 0 60px;align-items:center}.hero h1{margin-bottom:24px}.hero em{font-style:normal;color:var(--green)}.hero-description{max-width:470px;font-size:1rem;color:var(--muted);line-height:1.85;margin-bottom:28px}.hero-search,.search-row{display:flex;gap:10px}.hero-search input{min-width:0;flex:1}.gd-button,.secondary-button{display:inline-flex;justify-content:center;align-items:center;gap:18px;border-radius:9px;padding:12px 20px;font-size:.87rem;font-weight:800;border:1px solid transparent;white-space:nowrap;transition:transform .15s,background .15s}.gd-button{background:var(--green);color:#142417;box-shadow:0 4px 0 #648847}.gd-button:hover{color:#142417;background:#c9ff98;transform:translateY(-1px)}.secondary-button{background:#20334f;border-color:#536782;color:#eff4f9}.secondary-button:hover{background:#2c4563;color:white}.hero-links{display:flex;gap:24px;margin-top:22px;font-size:.75rem;color:var(--muted)}
.hero-art{height:420px;position:relative;overflow:hidden;border:1px solid #334d68;border-radius:22px;background:radial-gradient(ellipse at 70% 35%,#39676766,transparent 65%),linear-gradient(150deg,#142e49,#192344);isolation:isolate}.hero-art:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#6894ac16 1px,transparent 1px),linear-gradient(90deg,#6894ac16 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(black,transparent)}.art-cube{position:absolute;width:105px;height:105px;left:44%;top:34%;background:var(--green);border:6px solid #192a37;outline:2px solid var(--green);box-shadow:12px 12px 0 #b4ef7b24,0 0 80px #b4ef7b22;transform:rotate(-17deg);display:flex;gap:18px;padding:24px 16px;animation:float 7s ease-in-out infinite}.art-cube i{display:block;width:17px;height:17px;background:#1a3436}.art-cube b{position:absolute;left:25px;bottom:17px;width:45px;height:9px;background:#1a3436}.art-orbit{position:absolute;border:1px solid #90deca77;width:290px;height:290px;top:55px;left:75px;border-radius:50%;transform:rotate(-30deg) scaleX(.72)}.orbit-two{transform:rotate(45deg) scaleX(.72);border-color:#83afe54d}.art-star{position:absolute;left:48px;top:45px;color:var(--green);font-size:45px}.art-floor{position:absolute;left:-30px;right:-30px;height:85px;bottom:0;background:repeating-linear-gradient(135deg,transparent,transparent 27px,#6090b144 28px,#6090b144 29px);border-top:1px solid #6090b188;transform:skewY(-12deg)}.art-caption{position:absolute;bottom:33px;left:26px;letter-spacing:.22em;font-size:.6rem;font-weight:700}.art-coordinate{position:absolute;right:18px;top:18px;color:#9dc2cd;font:10px monospace;letter-spacing:.12em}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:14px;margin-bottom:65px;padding:24px 10px}.stat-grid article{padding:0 26px;border-right:1px solid var(--line)}.stat-grid article:last-child{border:0}.stat-grid strong{display:block;font-size:2rem;line-height:1.2}.stat-grid span{font-size:.75rem;color:var(--muted)}.free-note strong{color:var(--green)}.section-heading{display:flex;justify-content:space-between;gap:24px;align-items:center;margin:35px 0 22px}.section-heading h2,.section-heading .eyebrow{margin-bottom:8px}.section-heading>a,.section-heading>span{font-size:.8rem;color:var(--muted)}.level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.level-card{display:block;border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#111d31;transition:transform .18s,border-color .18s}.level-card:hover{transform:translateY(-4px);border-color:#9bc675;color:var(--ink)}.level-thumb{height:183px;overflow:hidden;position:relative;background:radial-gradient(ellipse at 75% 35%,#49959966,transparent 70%),linear-gradient(130deg,#193948,#112438)}.art-violet{background:radial-gradient(ellipse at 70% 25%,#9a6ac755,transparent 70%),linear-gradient(130deg,#352856,#141f35)}.level-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}.level-card:hover img{transform:scale(1.06)}.thumb-orbit{position:absolute;border:1px solid #bbefef55;border-radius:50%;width:170px;height:170px;left:45%;top:5%;transform:rotate(-30deg) scaleX(.6)}.thumb-cube{position:absolute;left:40%;top:20%;font-size:95px;line-height:1;color:#a7e5c5;text-shadow:12px 10px #c6daf51a;transform:rotate(17deg)}.level-number,.demo-badge{position:absolute;left:14px;top:13px;background:#071322c9;padding:3px 7px;border-radius:4px;font:10px monospace;color:#e1ebf7}.demo-badge{top:auto;bottom:12px;color:var(--green);letter-spacing:.07em;font-size:9px}.play-icon{position:absolute;right:15px;bottom:13px;border:1px solid #c2d9e877;border-radius:50%;width:30px;height:30px;text-align:center;line-height:28px}.card-body{padding:18px 19px}.card-meta{display:flex;justify-content:space-between;color:var(--green);font-size:.65rem;margin-bottom:10px}.card-meta span:last-child{color:var(--muted)}.card-body h3{margin-bottom:7px}.card-body p{font-size:.75rem;color:var(--muted);margin:0}.discovery-panel{display:flex;align-items:center;justify-content:space-between;gap:40px;margin-top:65px;padding:40px;border-radius:18px;background:linear-gradient(110deg,#253a36,#16243a);border:1px solid #42624f}.discovery-panel p:not(.eyebrow){color:var(--muted);max-width:480px;margin-bottom:0}
.page-heading{padding:48px 0 20px;max-width:900px}.page-heading h1{font-size:clamp(2rem,4vw,3.6rem);margin-bottom:18px}.page-heading p:not(.eyebrow){color:var(--muted);max-width:730px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin-bottom:24px}.text-filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:16px;margin:20px 0}.all-filters>summary{padding:16px 0}.all-filters>summary span{font-size:.8rem;color:var(--muted);margin-left:10px}summary{cursor:pointer;font-weight:600}.filter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:12px;margin:16px 0}.filter-box{border:1px solid var(--line);padding:12px;border-radius:8px;align-self:start}.filter-box summary{font-size:.85rem}.count{margin-left:8px;color:var(--green)}.check-list{max-height:220px;overflow:auto;padding-top:8px}.check-list label,.admin-check{display:flex;align-items:center;gap:8px;margin:5px 0;font-weight:400;font-size:.8rem}.pagination{display:flex;justify-content:center;align-items:center;gap:22px;margin:35px 0}.pagination span{font-size:.85rem;color:var(--muted)}.empty-state{text-align:center;padding:60px 20px}.empty-state p{color:var(--muted)}.empty-symbol{display:block;font-size:4rem;color:var(--green);margin-bottom:20px}.back-link{display:inline-block;margin-top:30px;font-size:.85rem;color:var(--muted)}.level-page{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:28px}.level-record{align-self:start}.showcase-item{margin-bottom:24px}.showcase-item iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:12px}.showcase-item p{margin:10px 0 3px}.showcase-item a{font-size:.85rem;color:var(--green)}.video-placeholder{border-radius:16px;aspect-ratio:16/9;background:linear-gradient(130deg,#203854,#283454);display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:25px}.video-placeholder span{font-size:4rem;color:var(--green)}.video-placeholder h2{font-size:1.3rem}.video-placeholder p{font-size:.8rem;color:var(--muted)}.level-switcher{display:flex;justify-content:space-between;gap:24px;margin:20px 0;font-size:.8rem}.record-fields{margin:0}.record-fields>div{padding:12px 0;border-bottom:1px solid var(--line)}dt{font-size:.7rem;color:var(--muted)}dd{margin:3px 0 0;font-weight:600;overflow-wrap:anywhere}.copy-button{margin-left:10px;background:#263e50;color:var(--green);border:1px solid var(--line);border-radius:5px;font-size:.65rem;padding:3px 8px}.record-description{margin:25px 0}.tag-row{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}.tag-row strong{font-size:.8rem;color:var(--muted)}.tag-chip{display:inline-block;padding:4px 12px;border:1px solid #47627e;border-radius:6px;font-size:.78rem;margin:0 5px 6px 0}.tag-chip:hover{border-color:var(--green)}.notice,.messages{border:1px solid #53633d;border-radius:10px;padding:16px 20px;background:#26332a;color:#def0ca;font-size:.86rem;margin-bottom:24px}.form-card{max-width:760px}.stack-form p{margin-bottom:20px}.stack-form>p>label{margin-bottom:7px}.stack-form input[type=checkbox]{vertical-align:middle}.form-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:25px}.errorlist{color:#ffc0b5;padding-left:20px}.admin-tag-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}.admin-editor{max-width:none;margin-top:40px}.admin-editor select[multiple]{min-height:130px}
.comparison-group{margin-bottom:18px}.comparison-group>label{max-width:420px}.comparison-group>details{margin:16px 0}.chart{min-height:240px;width:100%;overflow:auto}.chart svg{width:100%;min-width:400px;display:block}.chart-legend{display:flex;gap:18px;flex-wrap:wrap;font-size:.8rem;margin:15px 0}.legend-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:7px}.chart-panel h2{font-size:1.45rem}.enlarge-chart{margin-top:12px}dialog{width:min(94vw,1200px);max-height:92vh;background:var(--surface);color:var(--ink);border:1px solid #7d94ad;border-radius:16px;padding:24px}dialog::backdrop{background:#050b17dd}#large-chart svg{width:100%;display:block}.data-tables{overflow:auto}table{border-collapse:collapse;width:100%;font-size:.85rem}caption{text-align:left;color:var(--muted);margin-bottom:12px}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}td a{color:var(--green)}.data-tables h3{margin-top:20px}.footer-brand{font-weight:800;letter-spacing:.08em;font-size:.8rem;color:var(--green)}footer{border-top:1px solid var(--line);max-width:1272px;padding:34px 32px 40px;margin:auto;display:grid;grid-template-columns:1fr 1.5fr;gap:15px}footer p{font-size:.73rem;color:var(--muted);margin:0}.footer-links{grid-column:1/-1;display:flex;gap:25px;font-size:.72rem;color:var(--muted);margin-top:12px}
@keyframes float{50%{transform:translateY(-14px) rotate(-12deg)}}
@media(min-width:1500px){.level-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1000px){.hero{gap:30px}.hero-art{height:350px}.art-orbit{left:20px}.hero-links{gap:15px;flex-wrap:wrap}.site-header{padding:24px 30px}.level-page{grid-template-columns:minmax(0,1.3fr) minmax(240px,1fr)}}
@media(max-width:760px){main{padding:0 20px 40px}.site-header{padding:20px;align-items:flex-start;flex-direction:column;gap:18px}.site-header nav{flex-wrap:wrap;gap:20px}.hero{grid-template-columns:1fr;padding:40px 0;gap:30px}.hero h1{font-size:3rem}.hero-art{height:280px}.art-orbit{width:230px;height:230px;left:27%;top:20px}.art-cube{width:90px;height:90px;top:24%;left:47%;padding:18px 12px;gap:14px}.art-cube b{left:18px}.stat-grid{grid-template-columns:repeat(2,1fr);row-gap:25px;margin-bottom:35px}.stat-grid article:nth-child(2){border:0}.stat-grid strong{font-size:1.6rem}.level-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.level-thumb{height:150px}.level-page{grid-template-columns:1fr}.discovery-panel{padding:25px;flex-direction:column;align-items:flex-start}.panel{padding:20px}.search-row{flex-wrap:wrap}.search-row input{flex-basis:100%}.pagination{flex-wrap:wrap;gap:12px}.section-heading{align-items:flex-start}.section-heading>a{white-space:nowrap}.tag-row{grid-template-columns:1fr;gap:8px}.hero-search .gd-button{padding:12px}.all-filters>summary span{display:block;margin-left:18px}.chart svg{min-width:340px}footer{padding:30px 20px;grid-template-columns:1fr}.footer-links{flex-wrap:wrap}}
@media(max-width:430px){.level-grid{grid-template-columns:1fr}.level-thumb{height:195px}.brand-title{font-size:1.1rem}.site-header nav{font-size:.8rem}.hero h1{font-size:2.75rem}.hero-links{font-size:.7rem}.hero-art{height:250px}.section-heading{flex-direction:column;gap:4px}.pagination span{order:-1;flex-basis:100%;text-align:center}.gd-button,.secondary-button{white-space:normal}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.hover-preview{position:absolute;inset:0;width:100%;height:100%;border:0;pointer-events:none;z-index:2}
@media print{.site-header,footer,form,.enlarge-chart,.skip-link{display:none}body{background:white;color:black}.panel{break-inside:avoid;background:white;border-color:#aaa}.chart svg{max-width:100%}}