:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--ink:#f0f3fb;--muted:#a0acc3;--panel:#101625;--line:#cedcff20;--accent:#b7cafa}*{box-sizing:border-box}body{color:var(--ink);background:#060a13;margin:0;font-family:Pretendard,-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,system-ui,sans-serif}button,input{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,input:focus-visible,canvas:focus-visible{outline-offset:4px;outline:2px solid #b8d5ff}button{transition:background .18s,border-color .18s}button:hover:not(:disabled){background-color:#c4d9ff13}.app{max-width:2000px;min-height:100dvh;margin:auto;padding:22px 26px 28px}.topbar{justify-content:space-between;align-items:center;gap:22px;padding-bottom:22px;display:flex}.brand{flex-shrink:0;align-items:center;gap:12px;display:flex}.brand-mark{color:#dbe6ff;font-size:40px;line-height:1}.brand strong{letter-spacing:-.04em;font-size:24px;font-weight:650;display:block}.brand em{color:var(--muted);margin-top:3px;font-size:12px;font-style:normal;display:block}.topbar-controls{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.scale-toggle,.layer-toggle,.reading-toggle{border:1px solid var(--line);background:#101625;border-radius:12px;gap:3px;padding:4px;display:flex}.scale-toggle button,.layer-toggle button,.reading-toggle button{min-height:38px;color:var(--muted);white-space:nowrap;background:0 0;border:0;border-radius:8px;padding:0 14px;font-size:14px}.scale-toggle .active,.reading-toggle .active{color:var(--ink);background:#c2d6ff19}.layer-toggle .active{color:#101a30;background:#d7e3ff;font-weight:650}.layer-toggle .active:hover{background:#edf2ff}.motion-toggle{min-height:46px;color:var(--muted);border:1px solid var(--line);background:0 0;border-radius:12px;padding:0 12px;font-size:13px}.workspace{grid-template-rows:minmax(0,1fr);grid-template-columns:180px minmax(0,1fr) 350px;gap:18px;height:max(610px,100dvh - 119px);max-height:1000px;display:grid}.planet-list{flex-direction:column;gap:5px;padding:8px 0;display:flex;overflow:auto}.list-heading{padding:9px 10px 15px}.eyebrow{color:#bacbe9;letter-spacing:.08em;font-size:12px;font-weight:650}.list-heading p{color:var(--muted);margin:7px 0 0;font-size:13px}.planet-item{width:100%;min-height:61px;color:var(--ink);text-align:start;background:0 0;border:1px solid #0000;border-radius:12px;grid-template-columns:36px 1fr;align-items:center;gap:11px;padding:9px;display:grid}.planet-item.active{background:color-mix(in srgb, var(--tint) 10%, #0c1220);border-color:color-mix(in srgb, var(--tint), transparent 62%)}.planet-item b{font-size:16px;font-weight:600;display:block}.planet-item small{color:var(--muted);margin-top:3px;font-size:12px;display:block}.planet-thumb{object-fit:cover;border-radius:50%;width:36px;height:36px}.planet-item .dot{background:var(--tint);width:30px;height:30px;box-shadow:0 0 24px color-mix(in srgb, var(--tint), transparent 75%);border-radius:50%}.stage{border:1px solid var(--line);background:#04070e;border-radius:22px;min-width:0;min-height:420px;position:relative;overflow:hidden}.stage-mount{position:absolute;inset:0}.stage-mount canvas,.star-mount canvas{touch-action:none;cursor:grab;width:100%;height:100%;display:block}.solar-stage-header{pointer-events:none;justify-content:space-between;gap:16px;display:flex;position:absolute;inset:24px 24px auto}.solar-stage-header>span:last-child{color:#c3cede;font-size:12px}.stage-name{inset-inline:0;text-align:center;pointer-events:none;text-shadow:0 2px 18px #000;margin:0;font-size:36px;font-weight:600;position:absolute;bottom:62px}.stage-hint{inset-inline:0;text-align:center;color:#bdc9dd;pointer-events:none;font-size:13px;position:absolute;bottom:40px}.stage-credit{inset-inline:12px;text-align:center;color:#95a4bc;pointer-events:none;font-size:10px;position:absolute;bottom:13px}.loader{text-align:center;color:var(--muted);z-index:1;background:#070d19ee;place-content:center;padding:24px;line-height:1.7;display:grid;position:absolute;inset:0}.scale-note{border:1px solid var(--line);color:#d3e0f8;background:#0a1023eb;border-radius:12px;margin:0;padding:12px;font-size:14px;line-height:1.6;position:absolute;inset:64px 20px auto}.info{border:1px solid var(--line);scrollbar-width:thin;scrollbar-color:#4b5874 transparent;background:linear-gradient(140deg,#141d30,#0c1220 70%);border-radius:22px;min-width:0;padding:27px 24px;overflow:auto}.info h1{letter-spacing:-.04em;margin:0;font-size:36px;font-weight:650}.info>em{color:#b3c7ec;margin-top:7px;font-size:15px;font-style:normal;display:block}.description{word-break:keep-all;overflow-wrap:anywhere;margin:23px 0 0;font-size:16px;line-height:1.85}.look-up{background:#6096ef0d;border:1px solid #8fbcff25;border-radius:12px;margin-top:22px;padding:17px}.look-up b{color:#c4d9fc;margin-bottom:7px;font-size:14px;display:block}.look-up p{color:#c7d3e8;word-break:keep-all;overflow-wrap:anywhere;margin:0;font-size:15px;line-height:1.75}.facts{margin:24px 0 0}.facts>div{border-bottom:1px solid var(--line);grid-template-columns:minmax(85px,.8fr) 1fr;align-items:baseline;gap:14px;padding:13px 0;display:grid}.facts dt{color:var(--muted);font-size:14px}.facts dd{margin:0;font-size:15px;line-height:1.5}.fun{background:#e2c4860a;border-left:2px solid #d7b77a;margin-top:22px;padding:16px;font-size:15px;line-height:1.75}.fun b{color:#e4cda1;margin-bottom:5px;display:block}.workspace-cosmos{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr) 350px;align-items:start;height:auto;max-height:none}.workspace-cosmos>.planet-list{flex-direction:row;grid-column:1/-1;align-items:center;gap:24px;width:100%;min-width:0;padding:0 0 6px;overflow-x:auto}.workspace-cosmos .list-heading{flex:none;padding:0}.workspace-cosmos .list-heading p{margin-top:4px}.workspace-cosmos .planet-item{width:auto;min-width:200px;min-height:56px}.workspace-cosmos>.stage{min-height:0}.workspace-cosmos>.info{max-height:940px}.star-journey{flex-direction:column;display:flex;position:relative}.journey-heading{z-index:1;pointer-events:none;background:linear-gradient(#070b15d9,#0000);justify-content:space-between;align-items:flex-start;gap:16px;padding:26px 30px 25px;display:flex;position:absolute;inset:0 0 auto}.journey-heading .eyebrow{color:var(--stage-color)}.journey-heading .eyebrow span{opacity:.5;margin:0 10px}.journey-heading h2{letter-spacing:-.035em;margin:8px 0 4px;font-size:clamp(30px,3vw,46px);font-weight:550}.journey-heading p{color:#aebdd4;margin:0;font-size:14px}.scene-badge{color:#aebbd3;white-space:nowrap;border:1px solid #b2cfff26;border-radius:6px;padding:7px 10px;font-size:12px}.journey-view{background:#04070e;height:clamp(360px,44dvh,520px);position:relative}.star-mount{position:absolute;inset:0}.observation{border-left:2px solid var(--stage-color);pointer-events:none;background:#07101cdb;max-width:460px;padding:10px 14px;position:absolute;bottom:16px;left:26px;right:26px}.observation>span{color:#b7cae5;font-size:12px}.observation p{color:#e4ebf7;margin:4px 0 0;font-size:14px;line-height:1.55}.burst-replay{color:#ffe4bd;background:#0a0c17dc;border:1px solid #f0d7ab66;border-radius:9px;min-height:44px;padding:10px 15px;font-size:14px;position:absolute;top:14px;right:20px}.journey-console{border-top:1px solid var(--line);background:linear-gradient(125deg,#141e30,#0b1120);padding:23px 28px 19px}.journey-question h3{margin:0;font-size:19px;font-weight:600;line-height:1.5}.journey-question p{color:#c1cde1;word-break:keep-all;overflow-wrap:anywhere;max-width:900px;margin:9px 0 0;font-size:16px;line-height:1.8}.journey-choices{margin-top:17px}.star-fork{gap:10px;display:flex}.star-fork button{text-align:start;border:1px solid var(--line);background:#09111f;border-radius:10px;flex:1;min-height:64px;padding:10px 15px;font-size:15px}.star-fork button span{color:var(--muted);margin-top:5px;font-size:12px;display:block}.star-fork button.active{color:#f4e0b4;background:#e8c88a12;border-color:#e8c88a88}.remnant-choice{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:13px;display:flex}.remnant-choice button{border:1px solid var(--line);background:#131d31;border-radius:9px;min-height:44px;padding:0 13px;font-size:14px}.remnant-choice button[aria-pressed=true]{color:#dce8ff;background:#7699d72b;border-color:#a3bded}.star-row{align-items:center;gap:12px;margin-top:17px;display:flex}.star-row>button{border:1px solid var(--line);background:#121d30;border-radius:10px;flex:none;width:44px;height:44px;font-size:24px}.star-row>input{accent-color:#d6bc85;cursor:pointer;flex:1;min-width:0;height:44px}.journey-timeline{margin:6px 0 0;padding:0;list-style:none;display:flex}.journey-timeline li{flex:1;min-width:0}.journey-timeline button{color:#9aaac5;background:0 0;border:0;border-radius:8px;flex-direction:column;align-items:center;gap:8px;width:100%;min-height:65px;padding:9px 3px;font-size:13px;display:flex}.timeline-stop{border:1px solid #afc8f136;border-radius:50%;place-items:center;width:27px;height:27px;font-size:11px;display:grid}.journey-timeline .visited .timeline-stop{background:#8aabdb24}.journey-timeline .current{color:#ffe3ac;background:#e8c88a0b}.journey-timeline .current .timeline-stop{color:#182033;background:#e8c88a;border-color:#e8c88a}.model-note{color:#97a8c2;text-align:center;margin:15px 0 0;font-size:12px;line-height:1.6}.fork-hint{color:#eed29d;margin:13px 0 0;font-size:14px;line-height:1.6}.cosmos-stage{flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:500px;margin:0;padding:24px;display:flex}.cosmos-stage img{object-fit:contain;border-radius:14px;max-width:100%;max-height:600px}.cosmos-stage figcaption{max-width:640px;color:var(--muted);font-size:14px;line-height:1.6}.cosmos-stage-empty{padding:30px}.cosmos-view{background:radial-gradient(circle at 50% 48%,#11162d 0%,#04060d 58%,#020308 100%)}.cosmos-view .star-mount canvas{cursor:grab}.cosmos-console{background:linear-gradient(125deg,#171b35,#0a1020)}.cosmos-console .journey-question p{max-width:980px}.galaxy-view{background:radial-gradient(circle at 50% 48%,#111b36 0%,#050914 56%,#020308 100%)}.galaxy-view .star-mount canvas{cursor:grab}.galaxy-console{background:linear-gradient(125deg,#131f35,#0a1120)}.galaxy-console .journey-question p{max-width:1000px}.cosmos-caveat{color:#d5c5a9;border-left:2px solid #e6b777;margin:13px 0 0;padding:9px 12px;font-size:12px;line-height:1.6}.cosmos-timeline button small{color:#7788a5;font-size:10px;font-weight:400}.cosmos-timeline .current button small,.cosmos-timeline .current small{color:#ceb987}.cosmos-debug{color:#6f819f;text-align:center;letter-spacing:.02em;margin:9px 0 0;font-size:10px}@media (width<=1180px){.app{padding:18px}.topbar{align-items:flex-start}.workspace{grid-template-rows:auto;grid-template-columns:165px minmax(0,1fr);height:auto;max-height:none}.workspace>.stage{min-height:590px}.workspace>.info{grid-column:1/-1;overflow:visible}.workspace-cosmos{grid-template-columns:1fr}.workspace-cosmos>.info{max-height:none}.info{padding:25px}}@media (width<=760px){.app{padding:14px 12px}.topbar{flex-direction:column;gap:17px;padding-bottom:17px}.brand strong{font-size:23px}.brand-mark{font-size:33px}.topbar-controls{justify-content:flex-start;gap:7px;width:100%}.scale-toggle button,.layer-toggle button,.reading-toggle button{min-height:36px;padding:0 11px}.motion-toggle{min-height:44px;font-size:12px}.workspace{flex-direction:column;gap:14px;display:flex}.planet-list{flex-direction:row;gap:7px;padding:0 0 5px}.planet-list .list-heading{display:none}.planet-item{flex:none;grid-template-columns:30px 1fr;gap:8px;width:auto;min-width:120px;min-height:55px;padding:8px}.planet-thumb{width:30px;height:30px}.planet-item b{font-size:14px}.planet-item small{font-size:12px}.workspace>.stage{width:100%;min-height:450px}.workspace-cosmos>.stage{min-height:0}.workspace-cosmos>.planet-list{padding:0}.workspace-cosmos .planet-item{min-width:180px}.info{width:100%;padding:23px 20px}.journey-heading{padding:22px 20px 16px}.journey-heading h2{font-size:32px}.journey-heading p{max-width:210px;line-height:1.5}.scene-badge{padding:6px;font-size:10px}.journey-view{height:410px}.observation{padding:9px 12px;bottom:12px;left:14px;right:14px}.observation p{font-size:13px}.journey-console{padding:21px 16px 17px}.journey-question h3{font-size:18px}.journey-question p{font-size:16px}.journey-timeline{flex-wrap:wrap;row-gap:5px}.journey-timeline li{flex:0 0 33.333%}.journey-timeline button{min-height:69px;font-size:13px}.star-fork{gap:8px}.star-fork button{padding:11px;font-size:14px}.star-fork button span{font-size:12px}.solar-stage-header{inset:18px 16px auto}.solar-stage-header>span:last-child{font-size:11px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}.info-tabs{z-index:2;border:1px solid var(--line);background:#12141fee;border-radius:13px;grid-template-columns:1fr 1fr;gap:3px;width:100%;margin:14px 0 0;padding:3px;display:grid;position:sticky;top:-22px}.info-tabs button{min-height:38px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:10px;font-size:14px;font-weight:500}.info-tabs button.active{color:var(--ink);background:#ffffff1a}.info.tab-basic>.deep-dive,.info.tab-deep>:not(.deep-dive):not(h1):not(em):not(.info-tabs):not(.reading-actions):not(.topic-sources),.info.tab-quiz>:not(.quiz):not(h1):not(em):not(.info-tabs):not(.reading-actions){display:none}.deep-dive{margin-top:12px}.deep-dive>h2{margin:0 0 10px;font-size:15px;font-weight:600}.deep-dive-group{border-bottom:1px solid var(--line)}.deep-dive-group:last-child{border-bottom:0}.deep-dive-group h3{margin:0}.deep-dive-group>h3>button{width:100%;min-height:48px;color:var(--ink);cursor:pointer;text-align:start;background:0 0;border:0;grid-template-columns:1fr auto 10px;align-items:center;gap:9px;padding:9px 2px;display:grid}.deep-dive-group-title{font-size:15px;font-weight:600}.deep-dive-count{color:#b8a9f0;text-align:center;background:#b8a9f024;border-radius:99px;min-width:21px;padding:1px 6px;font-size:11px}.deep-dive-items{border-inline-start:2px solid #b8a9f029;margin-inline-start:4px;padding:0 0 6px 12px}.deep-dive-items article+article{border-top:1px solid var(--line)}.deep-dive-items h4{margin:0}.deep-dive-items h4 button{width:100%;min-height:42px;color:var(--ink);cursor:pointer;text-align:start;background:0 0;border:0;grid-template-columns:auto 1fr 10px;align-items:center;gap:9px;padding:7px 2px 7px 10px;display:grid}.deep-dive-label{color:#b8a9f0;white-space:nowrap;background:#b8a9f01f;border-radius:6px;padding:2px 7px;font-size:12px}.deep-dive-title{font-size:14px;font-weight:600}.deep-dive-chevron{border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);justify-self:end;width:8px;height:8px;transition:transform .2s;transform:translateY(-2px)rotate(45deg)}.deep-dive-group.open>h3>button>.deep-dive-chevron,.deep-dive-items article.open .deep-dive-chevron{transform:translateY(2px)rotate(-135deg)}.deep-dive-body{padding:0 0 14px 10px}.deep-dive-body p{color:var(--ink);white-space:pre-line;margin:0;font-size:16px;line-height:1.85}.deep-dive-figure{max-width:420px;margin:0 0 12px}.deep-dive-figure img,.deep-dive-figure video{object-fit:contain;background:#ffffff0a;border-radius:12px;width:100%;height:260px;display:block}.deep-dive-figure figcaption{color:var(--muted);margin-top:7px;font-size:12px;line-height:1.5}.reference-photo{margin:22px 0 0}.reference-photo img{aspect-ratio:1.6;object-fit:cover;border-radius:10px;width:100%;height:auto;display:block}.reference-photo figcaption{color:var(--muted);margin-top:9px;font-size:12px;line-height:1.6}.scene-toolbar{pointer-events:auto;flex-direction:column;align-items:flex-end;gap:8px;display:flex}.scene-toolbar button{color:#d1def4;border:1px solid var(--line);background:#0c1626d9;border-radius:8px;min-height:44px;padding:0 12px;font-size:13px}a{color:#b7d7ff;text-underline-offset:4px}select{font:inherit;color:var(--ink);background:#121f32;border:1px solid #8fa9d155;border-radius:10px;padding:12px}select:focus-visible,a:focus-visible,summary:focus-visible{outline-offset:4px;outline:2px solid #b8d5ff}.main-nav{border-block:1px solid var(--line);align-items:center;gap:5px;margin-bottom:22px;padding:9px 0;display:flex}.main-nav button{color:#a9b8d0;background:0 0;border:0;border-radius:8px;min-height:44px;padding:10px 20px}.main-nav button[aria-current]{color:#f0dcaf;background:#e5c48313}.main-nav>span{color:#8296b3;margin-left:auto;font-size:12px}.workspace{height:max(610px,100dvh - 206px)}.workspace-cosmos{height:auto}.cosmos-categories{flex-wrap:wrap;gap:8px;margin:0 0 12px;display:flex}.cosmos-categories button{border:1px solid var(--line);color:#a7bad6;background:#0b1321;border-radius:22px;min-height:44px;padding:10px 17px;font-size:13px}.cosmos-categories button[aria-pressed=true]{color:#13213a;background:#b8ccf2;border-color:#b8ccf2}.cosmos-categories button:last-child{margin-left:auto}.workspace-cosmos>.planet-list{gap:10px}.workspace-cosmos .planet-item{min-width:175px}.workspace-cosmos .list-heading{margin-right:10px}.galaxy-view{height:clamp(430px,53dvh,630px)}.galaxy-pin{z-index:1;color:#e0edf9;pointer-events:none;background:#08101dda;border:1px solid #c1d9f55c;border-radius:6px;max-width:190px;padding:7px 10px;font-size:11px;display:block;position:absolute;transform:translate(-8px,-100%)}.galaxy-pin[hidden]{display:none}.galaxy-pin:after{content:"";background:#9acde8;border:1px solid #fff;border-radius:50%;width:6px;height:6px;position:absolute;bottom:-9px;left:4px;box-shadow:0 0 9px #d5f0ff}.galaxy-view .observation{max-width:370px;bottom:13px}.galaxy-timeline li{flex:1}.solar-tools{flex-wrap:wrap;gap:7px;display:flex;position:absolute;top:61px;left:18px;right:18px}.solar-tools button{background:#07101bcf;border:1px solid #aac9f340;border-radius:8px;min-height:42px;padding:8px 12px;font-size:12px}.orbit-note{color:#b7c8e0;text-align:center;background:#050b1690;border-radius:8px;padding:8px;font-size:12px;line-height:1.65;position:absolute;bottom:104px;left:20px;right:20px}.scale-note{top:111px}.description{white-space:pre-line}.reading-actions{justify-content:space-between;align-items:center;gap:10px;margin-top:16px;display:flex}.reading-actions button{border:1px solid var(--line);color:#c9dcf9;background:#a9c3f211;border-radius:8px;min-height:44px;padding:9px 12px;font-size:13px}.reading-actions small{color:#98abc6;font-size:11px}.info-tabs{gap:3px;display:flex}.info-tabs button{white-space:nowrap;flex:1;min-height:44px;padding-inline:6px}.fact-note{color:#8fa4c0;font-size:11px;line-height:1.8}.fact-note button{color:#bed5f3;font-size:inherit;background:0 0;border:0;padding:7px 0;text-decoration:underline}.topic-sources{color:#94aaca;border-top:1px solid var(--line);margin-top:26px;padding-top:12px;font-size:12px}.topic-sources summary{cursor:pointer;align-content:center;min-height:44px}.topic-sources ul{padding-left:18px}.topic-sources li{margin:14px 0;line-height:1.65}.quiz{padding-top:26px}.quiz h2{font-size:21px;line-height:1.65}.quiz-choices{gap:10px;display:grid}.quiz-choices button{text-align:left;background:#0a1221;border:1px solid #8299b33d;border-radius:10px;align-items:center;gap:10px;min-height:58px;padding:15px;font-size:15px;line-height:1.6;display:flex}.quiz-choices button>span{color:#8eafd8}.quiz-choices .correct{background:#74bb9218;border-color:#9cd3bf}.quiz-feedback{background:#8cc8b814;border-radius:12px;margin-top:20px;padding:18px}.quiz-feedback h3{color:#bde1d4;margin-top:0;font-size:17px}.quiz-feedback p{font-size:15px;line-height:1.85}.quiz-feedback button{border:1px solid var(--line);background:0 0;border-radius:8px;padding:12px}.hub{max-width:1480px;margin-inline:auto;padding:25px 26px 65px}.hub-intro{padding:30px 0 46px;position:relative;overflow:hidden}.hub-intro h1{letter-spacing:-.055em;z-index:1;margin:20px 0 16px;font-size:clamp(32px,3.7vw,55px);font-weight:550;line-height:1.3;position:relative}.hub-intro p{z-index:1;color:#a9bdd8;line-height:1.8;position:relative}.atlas .hub-intro:after{content:"";pointer-events:none;background:radial-gradient(#7499d519,#0000 65%);border:1px solid #8ba3d62a;border-radius:50%;width:410px;height:250px;position:absolute;top:-55px;right:0;transform:rotate(-27deg);box-shadow:0 0 0 27px #879ccc05,0 0 0 70px #879ccc04}.atlas-numbers{color:#92a7c3;flex-wrap:wrap;gap:23px;margin-top:27px;font-size:13px;display:flex}.atlas-numbers b{color:#ecddb9;margin-right:5px;font-size:21px;font-weight:500}.reading-routes{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.reading-routes article{background:linear-gradient(130deg,#16253a,#0c1525);border:1px solid #c5d7f021;border-radius:17px;padding:24px;position:relative}.route-number{color:#d9bd8c;letter-spacing:.15em;font-size:12px}.reading-routes h2{margin-bottom:7px;font-size:20px;font-weight:550}.reading-routes p{color:#97abc7;margin-top:0;font-size:13px}.reading-routes ol{flex-wrap:wrap;gap:5px;margin:18px 0 0;padding:0;list-style:none;display:flex}.reading-routes button{color:#cfdef3;background:#07101a45;border:1px solid #99b5dc26;border-radius:7px;min-height:44px;padding:9px 10px;font-size:13px}.reading-routes button span{color:#8aa9cf;margin-left:5px}.catalog-heading{justify-content:space-between;align-items:end;gap:30px;margin:55px 0 20px;display:flex}.catalog-heading h2{font-size:24px;font-weight:500}.search-field{gap:8px;min-width:290px;display:grid}.search-field span{color:#95abc9;font-size:12px}.search-field input{color:#e6edf6;background:#101b2b;border:1px solid #8aa7d344;border-radius:10px;width:100%;min-width:0;padding:14px 17px}.filter-row{flex-wrap:wrap;gap:8px;display:flex}.filter-row button{color:#a4b8d5;background:#101929;border:1px solid #8095b930;border-radius:30px;min-height:44px;padding:10px 20px;font-size:14px}.filter-row button[aria-pressed=true]{color:#f4e1b6;background:#d6b67017;border-color:#cfb78475}.result-count{color:#869bb7;margin-top:22px;font-size:12px}.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;display:grid}.topic-card{text-align:start;background:linear-gradient(140deg,#121e30,#0a1422);border:1px solid #94b4d929;border-radius:15px;padding:22px;display:block;position:relative;overflow:hidden}.topic-card:hover{border-color:var(--tint)}.topic-art{height:82px;color:var(--tint);align-items:center;margin-bottom:15px;display:flex}.topic-art img{object-fit:cover;width:65px;height:65px;box-shadow:0 0 40px color-mix(in srgb,var(--tint),transparent 90%);border-radius:50%}.topic-art>span{border:1px solid color-mix(in srgb,var(--tint),transparent 80%);background:radial-gradient(ellipse,color-mix(in srgb,var(--tint),transparent 90%),transparent);border-radius:50%;place-items:center;width:76px;height:76px;font-size:45px;display:grid}.galaxy-art>span{border-radius:50%;transform:rotate(-25deg)scaleY(.55);box-shadow:0 0 0 8px #d6dbf00b,0 0 0 15px #d6dbf005}.topic-card>small{color:#8c9fb9;font-size:11px}.topic-card h3{color:color-mix(in srgb,var(--tint),white 25%);margin:9px 0;font-size:21px;font-weight:550}.topic-card p{color:#a1b5d0;margin:0;font-size:13px;line-height:1.7}.card-arrow{color:#90a7c1;position:absolute;top:26px;right:22px}.dictionary>.search-field{max-width:520px}.dictionary-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.dictionary-grid details{background:#101b2c;border:1px solid #aec9e629;border-radius:12px;align-self:start;padding:8px 22px}.dictionary-grid summary{cursor:pointer;padding:18px 0;font-size:19px}.dictionary-grid summary span{float:right;color:#839cba}.dictionary-grid p{font-size:16px;line-height:1.85}.dictionary-grid .word-example{color:#a4b9d4;font-size:14px}.dictionary-grid button{color:#d8c598;background:0 0;border:0;min-height:44px;padding:10px 0 17px;font-size:13px}.empty-results{color:#b1c4df;text-align:center;padding:45px 15px}.lab-selectors{gap:20px;margin:30px 0;display:flex}.lab-selectors label{color:#a1b5cf;flex:1;gap:10px;max-width:320px;font-size:13px;display:grid}.experiment{background:linear-gradient(125deg,#121f32,#09111f);border:1px solid #94b5db30;border-radius:20px;padding:32px}.experiment h2{margin-top:0;font-size:23px;font-weight:500;line-height:1.5}.experiment>svg{width:100%;max-height:390px;margin:20px 0}svg text{fill:#bcd0e7;font:14px -apple-system,system-ui,sans-serif}.experiment>p{font-size:18px;line-height:1.8}.experiment .experiment-note{color:#9aafc9;max-width:880px;font-size:14px}.comparison-results{grid-template-columns:1fr 1fr;gap:22px;margin:30px 0;display:grid}.comparison-results article{border:1px solid var(--line);background:#8eacd509;border-radius:12px;padding:23px}.comparison-results h3{color:#d8c496;margin-top:0}.comparison-results strong{font-size:26px;font-weight:500}.comparison-results p,.comparison-results dt{color:#a8bbd4;font-size:14px;line-height:1.75}.comparison-results dd{margin:8px 0 25px;font-size:23px}.concept-scene>header{padding:30px 32px 0}.concept-scene h2{letter-spacing:-.04em;margin:15px 0 6px;font-size:35px;font-weight:550}.concept-scene header p{color:#9db0cb;font-size:14px}.concept-scene>svg{width:100%;min-height:300px;max-height:500px;display:block}.concept-console{border-top:1px solid var(--line);background:linear-gradient(120deg,#141f33,#0b1425);padding:25px 30px}.concept-console h3{margin:0 0 12px;font-size:21px}.concept-console p{color:#b8c9e2;font-size:15px;line-height:1.85}.concept-slider{color:#c7d8ed;gap:8px;margin-top:20px;font-size:13px;display:grid}.concept-slider input{width:100%;height:44px;accent-color:var(--stage-color)}.concept-console .model-note{color:#8ea2bf;font-size:11px}.book-reader{z-index:20;color:#dee7f3;scrollbar-color:#607b9d transparent;background:#101b2b;border:1px solid #94b5db50;border-radius:18px;width:min(900px,100% - 30px);max-height:calc(100dvh - 40px);margin:auto;padding:0;position:fixed;inset:20px auto;box-shadow:0 24px 100px #000b}.book-reader:before{content:"";z-index:-1;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#02060dea;position:fixed;inset:0}.book-reader::backdrop{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#02060dea}.book-toolbar{border-bottom:1px solid var(--line);z-index:1;background:#101b2bf5;justify-content:space-between;align-items:center;gap:16px;padding:14px 25px;display:flex;position:sticky;top:0}.book-toolbar span{color:#91a9c6;font-size:12px}.book-toolbar button{border:1px solid var(--line);background:#16243a;border-radius:8px;min-height:44px;padding:10px 16px}.book-reader article{padding:45px clamp(24px,6vw,95px) 80px}.book-reader h1{letter-spacing:-.04em;margin:20px 0 35px;font-size:42px;font-weight:550}.book-reader p{white-space:pre-line;word-break:keep-all;overflow-wrap:anywhere;font-size:18px;line-height:2.15}.book-reader article section{border-top:1px solid #b2c8e528;margin-top:48px;padding-top:38px}.chapter-index{color:#d3b982;letter-spacing:.12em;font-size:13px}.book-reader h2{margin:12px 0 25px;font-size:26px;font-weight:500;line-height:1.5}@media (width<=1180px){.workspace{height:auto}.main-nav>span{display:none}.hub{padding-inline:10px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.reading-routes{gap:12px}.reading-routes article{padding:20px}}@media (width<=760px){.main-nav{flex-wrap:wrap;gap:5px;margin-bottom:18px;padding:7px 0}.main-nav button{flex:1 0 44%;padding:11px;font-size:14px}.cosmos-categories{gap:5px}.cosmos-categories button{padding:9px 12px;font-size:12px}.cosmos-categories button:last-child{margin-left:0}.galaxy-view{height:460px}.galaxy-pin{max-width:145px;padding:6px;font-size:10px}.hub{padding:5px 4px 40px}.hub-intro{padding:24px 0 30px}.hub-intro .eyebrow{font-size:10px}.hub-intro h1{font-size:32px}.hub-intro p{font-size:14px}.atlas-numbers{gap:15px;font-size:11px}.reading-routes{grid-template-columns:1fr}.reading-routes article{padding:22px}.reading-routes h2{font-size:21px}.catalog-heading{flex-direction:column;align-items:stretch;gap:10px;margin-top:32px}.catalog-heading h2{margin-bottom:5px}.search-field{min-width:0}.filter-row{gap:6px}.filter-row button{padding-inline:13px;font-size:13px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.topic-card{padding:17px 13px}.topic-card h3{font-size:18px}.topic-card p{font-size:12px}.topic-art{height:65px}.topic-art>span{width:54px;height:54px;font-size:32px}.dictionary-grid{grid-template-columns:1fr}.lab-selectors{gap:12px}.lab-selectors label{min-width:0}.lab-selectors select{width:100%;font-size:14px}.experiment{padding:22px 15px}.experiment h2{font-size:21px}.experiment>p{font-size:16px}.comparison-results{gap:10px;margin-block:18px}.comparison-results article{padding:16px 11px}.comparison-results dd{font-size:17px}.concept-scene>header{padding:26px 20px 0}.concept-scene h2{font-size:32px}.concept-console{padding:23px 20px}.concept-scene>svg{min-height:250px}.book-toolbar{padding:10px 15px}.book-toolbar span{max-width:135px;line-height:1.5}.book-reader article{padding:30px 22px 50px}.book-reader h1{font-size:34px}.book-reader p{font-size:17px}.book-reader h2{font-size:24px}}.book-sources a{color:#b4cafa}.book-sources li{margin:12px 0;line-height:1.7}.planet-list{scrollbar-width:thin;scrollbar-color:#374154 transparent}@media (width<=600px){.experiment svg text{font-size:22px}}