@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=Manrope:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--muted:#8e9ba7;--line:#b8d7ed20;--gold:#d4b77f}*{box-sizing:border-box}body{margin:0;background:#02080e;color:#ecf1f5;font-family:'DM Sans',sans-serif;font-size:14px}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:focus-visible,a:focus-visible{outline:2px solid #8bd8ff;outline-offset:5px}#stars,#earth,.veil{position:fixed;inset:0;width:100%;height:100%;pointer-events:none}#earth{opacity:1}.veil{background:linear-gradient(90deg,#02080e35,transparent 60%,#02080e55),linear-gradient(#02080e00 60%,#02080e70)}main{position:relative;max-width:1800px;margin:auto;padding:28px 42px 16px}header{height:64px;display:flex;align-items:flex-start;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{text-decoration:none;color:#d9e0e5;letter-spacing:4px;font-size:17px;font-weight:600;display:flex;align-items:center;gap:12px}.brand-icon{font-size:26px;color:var(--gold)}.edition{font-size:9px;letter-spacing:2px;color:var(--muted);margin-left:7px}.live{font-size:10px;letter-spacing:1.8px;display:flex;align-items:center;gap:9px;padding-top:8px}.live i,.tiny-dot{display:inline-block;width:5px;height:5px;background:#9ec9a6;border-radius:50%;box-shadow:0 0 9px #9ec9a6}.live span{border:1px solid var(--line);padding:2px 5px;color:var(--muted);font-size:9px}header button,footer button{background:none;border:none;color:#a9b6c1;font-size:11px;padding:8px 0}.layout{display:grid;grid-template-columns:260px minmax(350px,1fr) 290px;gap:15px;padding-top:40px;min-height:calc(100vh - 150px)}.eyebrow{font-size:9px;letter-spacing:2.6px;color:var(--gold);margin:10px 0 20px}h1{font-family:Manrope,sans-serif;font-size:38px;line-height:1.2;font-weight:400;letter-spacing:-1.8px;margin:0 0 18px}h1 em{font-style:normal;color:#c6d0d9}.lead{line-height:1.8;font-size:13px;color:var(--muted)}.season-list{margin-top:48px;display:grid;gap:24px}.season-item{display:flex;gap:14px;align-items:center}.season-symbol{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#ffffff08;border:1px solid currentColor;font-size:16px}.season-item strong{font-size:12px;font-weight:400}.season-item p{font-size:10px;color:var(--muted);margin:5px 0 0}.axis{display:flex;gap:15px;align-items:center;margin-top:45px}.axis-globe{font-size:48px;color:#75aac3;transform:rotate(-23.44deg);position:relative}.axis-globe:after{content:'';position:absolute;width:1px;height:68px;background:#c2d9e7;left:24px;top:-7px}.axis small,small{font-size:9px;letter-spacing:1.3px;color:var(--muted)}.axis strong{font-size:23px;display:block;margin:4px 0;font-weight:400}.axis p{font-size:9px;color:var(--muted)}.orbital{min-width:0;align-self:start;position:relative}.diagram{width:100%;max-width:760px;margin:-32px auto 0}svg{width:100%;overflow:visible}svg text{font-family:'DM Sans',sans-serif;fill:#a9b7c4;font-size:13px;text-anchor:middle;dominant-baseline:middle}.sun-label{letter-spacing:4px;font-size:10px;fill:#d8bf8f}.now-label{fill:#e1f4ff;font-size:9px;letter-spacing:1px}.orbit-caption{display:flex;justify-content:center;gap:7px;align-items:center;font-size:9px;letter-spacing:.7px;color:#91a7b6;margin-top:-20px}.tiny-dot{width:3px;height:3px;background:#8bd8ff}.travel{text-align:center;margin-top:42px}.travel small{font-size:9px;letter-spacing:2px;color:#d2dbe2}.travel>div{font-family:Manrope,sans-serif;font-size:48px;font-weight:400;font-variant-numeric:tabular-nums;letter-spacing:-2px;margin:8px 0}.travel .unit{font-size:15px;letter-spacing:0;color:#a0b3c3}.travel p{font-size:11px;color:#a7b8c6;margin:0}aside{display:grid;gap:12px;align-content:start}.panel{background:linear-gradient(130deg,#07131de8,#04101ad9);border:1px solid #7aadc525;border-radius:13px;padding:19px 20px;backdrop-filter:blur(12px);box-shadow:0 8px 30px #0002}.panel-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;letter-spacing:1.4px;color:#92a5b6;margin-bottom:17px}.panel-top span:last-child{color:#c9b184}.clock-panel .panel-top{letter-spacing:.4px;font-size:11px;margin-bottom:8px}#date{font-size:19px;font-weight:400}#clock{font-family:Manrope,sans-serif;font-size:39px;letter-spacing:-1px;font-variant-numeric:tabular-nums;margin:8px 0 17px}.clock-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px;font-size:8px;letter-spacing:1.2px;color:var(--muted)}.clock-bottom span:last-child{color:#d7dfe6}.progress-label{display:flex;justify-content:space-between;font-size:11px;color:#a1aeba}.progress-label strong{font-size:10px;color:var(--gold);font-weight:400}.progress{height:3px;background:#9dc0d315;border-radius:4px;margin:12px 0 20px;overflow:hidden}.progress i{display:block;height:100%;background:var(--gold)}.row{display:flex;justify-content:space-between;font-size:10px;gap:10px;color:#a0adba}.row strong{color:#e8c59c;font-size:12px;font-weight:400}.next{border-top:1px solid var(--line);margin-top:17px;padding-top:15px}.next small{font-size:8px;letter-spacing:1.4px}.next div{font-size:13px;margin-top:7px}.next p{font-size:10px;color:var(--muted);margin:6px 0 0}.stats label{display:block;color:#91a2b1;font-size:10px;margin-top:18px}.stats label:first-of-type{margin-top:0}.metric{display:flex;align-items:baseline;gap:8px;margin-top:4px}.metric span{font-size:24px;letter-spacing:-.7px;font-variant-numeric:tabular-nums}.metric small{font-size:9px;letter-spacing:0}.chinese{display:flex;align-items:center;gap:17px}.han{font-family:serif;color:var(--gold);font-size:36px}.chinese small{font-size:8px}.chinese strong{display:block;font-size:13px;font-weight:400;margin-top:6px}.chinese p{font-size:10px;color:var(--muted);margin:4px 0 0}footer{display:flex;justify-content:space-between;align-items:center;font-size:8px;letter-spacing:1.4px;color:#9cacbb;border-top:1px solid var(--line);margin-top:25px;padding:12px 0 0}footer b{color:var(--gold);padding:0 7px}footer button{font-size:9px}dialog{background:#07131e;color:#cad6df;border:1px solid #456079;border-radius:18px;max-width:600px;width:calc(100% - 30px);max-height:85vh;padding:30px;line-height:1.7;font-size:13px}dialog::backdrop{background:#000b;backdrop-filter:blur(8px)}dialog h2{font-size:28px;font-weight:400;line-height:1.3;color:white}dialog a{color:#9ed3ef}#close{position:absolute;right:15px;top:10px;background:none;border:0;font-size:27px}.season-item.active .season-symbol{box-shadow:0 0 20px #d6ad5f25}.season-item.active strong{color:#efd0a2}@media(min-width:1550px){.layout{grid-template-columns:290px minmax(350px,1fr) 320px}h1{font-size:46px}.panel{padding:23px}.travel{margin-top:10px}}@media(max-width:1150px){main{padding:22px}.layout{grid-template-columns:200px minmax(280px,1fr) 250px;gap:0}h1{font-size:30px}.panel{padding:16px}.diagram{margin-top:10px}.edition{display:none}#clock{font-size:34px}.travel{margin-top:65px}.travel>div{font-size:39px}}@media(max-width:850px){main{padding:20px}.layout{grid-template-columns:1fr 1fr;gap:20px;padding-top:26px}.intro{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}.intro .eyebrow{grid-column:1/-1;margin-bottom:12px}h1{font-size:32px}.lead{margin-top:0;align-self:center}.season-list,.axis{display:none}.orbital{grid-column:1/-1}.diagram{max-width:590px;margin:-25px auto 0}.travel{margin-top:30px}.travel>div{font-size:44px}aside{grid-column:1/-1;grid-template-columns:1fr 1fr}.panel{padding:20px}.live{font-size:8px;letter-spacing:1px}header button{display:none}footer span:first-child{display:none}}@media(max-width:480px){main{padding:16px}header{height:49px}.brand{font-size:13px;letter-spacing:3px;gap:7px}.brand-icon{font-size:22px}.live{font-size:7px;letter-spacing:.6px;padding-top:6px;gap:5px}.layout{padding-top:20px;gap:18px}.intro{display:block}.eyebrow{font-size:8px;margin:5px 0 12px}h1{font-size:31px;line-height:1.15;margin-bottom:11px}.lead{font-size:11px;line-height:1.6}.lead br{display:none}.diagram{margin:-5px -7px 0;width:calc(100% + 14px)}svg text{font-size:14px}.orbit-caption{font-size:7px;margin-top:-12px}.travel{margin-top:27px}.travel small{font-size:7px;letter-spacing:1.5px}.travel>div{font-size:40px}.travel p{font-size:10px}aside{gap:10px}.panel{padding:15px 13px;border-radius:11px}.clock-panel{grid-column:1/-1}#clock{font-size:45px;margin-bottom:15px}#date{font-size:20px}.panel-top{font-size:8px;letter-spacing:.8px}.row{display:block;line-height:1.6}.row strong{display:block}.metric{display:block}.metric span{font-size:23px}.metric small{display:block;margin-top:2px}.stats label{font-size:9px}.next div{font-size:12px}.progress-label{font-size:9px}.chinese{grid-column:1/-1}footer{font-size:7px;letter-spacing:.5px}footer button{font-size:8px}.han{font-size:30px}}

/* A stable large viewport prevents browser toolbar scrolling from resizing the globe. */
#earth,#stars,.veil{bottom:auto;height:100vh;height:100lvh;transform:translateZ(0);backface-visibility:hidden;}

.camera-controls{display:flex;align-items:center;justify-content:center;gap:12px;margin:23px 0 -20px;flex-wrap:wrap}.control-button{border:1px solid #9abbd440;background:#0a1b29dd;border-radius:20px;padding:9px 15px;font-size:10px;color:#c5dceb}.control-button:hover{background:#173347}.control-button[aria-pressed=true]{border-color:#d4b77f80;color:#e7c995}.camera-controls span{font-size:9px;color:#c1cdd7}.location-note{font-size:9px;color:#93a6b6;line-height:1.6;margin:10px 0 0}.local-heading{display:flex;justify-content:space-between;align-items:center;margin-top:15px}.local-heading strong{font-size:18px;font-weight:400;color:#edcc92}.local-heading span{font-size:10px;color:#a8bac8}#coordinates{font-size:10px;color:#9fb1bf}.sun-times{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;border-top:1px solid var(--line);padding-top:14px;margin-top:12px}.sun-times small{font-size:7px;letter-spacing:.6px}.sun-times strong{display:block;font-size:14px;font-weight:400;margin-top:5px}.subtle{font-size:9px;margin-top:13px;padding:8px 10px}.text-button{display:block;border:none;background:none;color:#95abba;font-size:9px;margin:10px 0 0;padding:0}.local-panel [hidden]{display:none}@media(max-width:850px){.local-panel{grid-column:1/-1}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

.language-picker{margin:3px 12px 0 auto}.language-picker select{font:inherit;font-size:10px;max-width:145px;color:#cfdae4;background:#0b1924;border:1px solid #8fb0ca40;border-radius:15px;padding:6px 9px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}header .live{margin-left:auto}@media(max-width:480px){.language-picker{margin:3px 0 0 8px}.language-picker select{max-width:105px;font-size:9px;padding:5px}.brand{letter-spacing:2px}.live span{display:none}.live{letter-spacing:0;font-size:6px;gap:4px}}

.discover-button{border-color:#d4b77f80;color:#efd29c}.explorer-dialog{width:min(1000px,calc(100% - 24px));max-width:1000px;padding:25px;max-height:94dvh;background:#05101af5}.explorer-dialog[open]{display:block}.explorer-top{display:flex;justify-content:space-between;align-items:start}.explorer-top .eyebrow{margin:0 0 8px}.explorer-top h2{font-size:25px;margin:0}.icon-button{background:#102434;border:1px solid #8fb1c440;color:#dce8ed;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;font-size:22px;line-height:1;flex-shrink:0}.explorer-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 10px}.explorer-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(235px,1fr);gap:25px}.globe-section{min-width:0}.globe-viewport{position:relative;background:radial-gradient(ellipse at center,#102a3a50,transparent 68%);border:1px solid #759fb51c;border-radius:16px;overflow:hidden;aspect-ratio:1}#explorer-earth{display:block;width:100%;height:100%;touch-action:none;cursor:grab}#explorer-earth:active{cursor:grabbing}#explorer-loading{position:absolute;left:0;right:0;top:45%;text-align:center;font-size:11px;pointer-events:none}.zoom-controls{position:absolute;right:12px;bottom:12px;display:flex;gap:6px}.gesture-note{font-size:10px;text-align:center;color:#9fb3c2}.view-actions{display:flex;justify-content:center;gap:20px}.view-actions button{margin:0}.text-button:disabled{opacity:.4;cursor:default}.explorer-details{padding:10px 0}.mode-badge{display:inline-block;font-size:10px;letter-spacing:1px;color:#e8c487;border:1px solid #dbb77a55;border-radius:6px;padding:5px 8px}.explorer-date{font-size:19px;margin-top:12px;line-height:1.5;font-variant-numeric:tabular-nums}.playback{display:flex;align-items:center;gap:15px;margin-top:13px}.playback .text-button{margin:0}#explorer-timeline{width:100%;margin:17px 0 0;accent-color:#d4b77f}.explorer-orbit{max-width:230px;width:100%;display:block;margin:8px auto}.explorer-stats{display:grid;gap:12px}.explorer-stats small{font-size:9px;letter-spacing:0}.explorer-stats strong{display:block;font-size:14px;font-weight:400}.lesson{padding:14px;background:#a5c5db08;border-left:2px solid #bc9d68;margin:17px 0}.lesson strong{font-size:12px;color:#e5c994}.lesson p{font-size:11px;color:#b2c1cd;line-height:1.7;margin:6px 0 0}.explorer-disclaimer{border-top:1px solid var(--line);padding-top:13px}#simulation-controls[hidden]{display:none}@media(max-width:650px){.explorer-dialog{padding:18px}.explorer-layout{grid-template-columns:1fr;gap:13px}.explorer-top h2{font-size:22px}.explorer-details{padding-top:0}.explorer-orbit{max-width:190px}.explorer-stats{grid-template-columns:1fr 1fr}.explorer-tabs .control-button{padding:8px 10px;font-size:9px}.globe-viewport{max-width:450px;margin:auto}}

#year-view-controls[hidden]{display:none}.year-view-buttons{display:flex;flex-wrap:wrap;gap:6px;margin:9px 0}.year-view-buttons .control-button{padding:7px 9px;font-size:9px}.speed-label{display:block;font-size:9px;color:#9eb2c2;margin:12px 0 5px}#year-speed{font:inherit;font-size:10px;padding:6px 9px;border:1px solid #89aabb44;border-radius:10px;background:#0d2130;color:#d6e2eb;max-width:100%}

/* One clear primary action under the annual orbit. */
.camera-controls{display:flex;justify-content:center;margin:28px 0 0;gap:0}.camera-controls .discover-button{min-width:230px;padding:14px 25px;font-size:12px;font-weight:600;color:#08121a;background:linear-gradient(120deg,#edcf99,#cfaf75);border:1px solid #ecd4a9;box-shadow:0 7px 30px #d4b77f20}.camera-controls .discover-button:hover{background:linear-gradient(120deg,#f8dfb3,#dfc18e)}.camera-controls+.travel{margin-top:30px}.model-camera{border-block:1px solid var(--line);padding:5px 0 15px;margin-top:18px}
.explorer-dialog{--season-rgb:153,201,231;background:radial-gradient(ellipse at 12% 0%,rgba(var(--season-rgb),.12),transparent 55%),#05101a; border-color:rgba(var(--season-rgb),.55);transition:background .5s,border-color .5s}.season-banner{display:flex;align-items:center;gap:15px;padding:13px 16px;margin:6px 0 10px;border:1px solid rgba(var(--season-rgb),.25);border-radius:12px;background:rgba(var(--season-rgb),.06)}#theme-season-icon{font-size:33px;color:rgb(var(--season-rgb));width:35px;text-align:center}#theme-season-title{display:block;color:rgb(var(--season-rgb));font-size:22px;font-weight:400;line-height:1.3}.season-banner small{font-size:8px;letter-spacing:1px}.season-banner p{font-size:10px;line-height:1.5;color:#adbfcd;margin:4px 0 0}.season-jumps{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:0 0 12px}.season-jumps[hidden]{display:none}.season-jump{font:inherit;font-size:9px;color:#a5b7c7;border:1px solid #8da7bd30;border-radius:15px;background:#0c1b27;padding:7px 5px}.season-jump[aria-pressed=true]{border-color:rgba(var(--season-rgb),.65);color:rgb(var(--season-rgb));background:rgba(var(--season-rgb),.1)}.explorer-dialog .globe-viewport{background:radial-gradient(ellipse at center,rgba(var(--season-rgb),.15),transparent 72%);border-color:rgba(var(--season-rgb),.25)}.explorer-dialog .mode-badge{color:rgb(var(--season-rgb));border-color:rgba(var(--season-rgb),.4)}.explorer-dialog .control-button[aria-pressed=true]{color:rgb(var(--season-rgb));border-color:rgba(var(--season-rgb),.6)}.explorer-dialog #explorer-timeline{accent-color:rgb(var(--season-rgb))}.explorer-dialog .lesson{border-color:rgb(var(--season-rgb));background:rgba(var(--season-rgb),.05)}.explorer-dialog .lesson strong,.explorer-dialog .sun-label{color:rgb(var(--season-rgb));fill:rgb(var(--season-rgb))}.explorer-dialog #explorer-season{color:rgb(var(--season-rgb))}.explorer-dialog #explorer-orbit-marker{fill:rgb(var(--season-rgb))}@media(max-width:480px){.camera-controls{margin-top:25px}.camera-controls .discover-button{width:min(100%,290px);font-size:12px;padding:14px 18px}.camera-controls+.travel{margin-top:26px}.season-banner{padding:11px 13px}}@media(prefers-reduced-motion:reduce){.explorer-dialog{transition:none}}

.explorer-window-actions{display:flex;gap:8px}.explorer-dialog.expanded,.explorer-dialog:fullscreen{width:100vw;height:100dvh;max-width:none;max-height:100dvh;margin:0;border-radius:0;padding:25px;overflow:auto}.axis-overlay{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none;overflow:hidden}.axis-overlay line{stroke:#e7eff4b3;stroke-width:1.5;stroke-dasharray:5 4}.axis-overlay text{fill:#dce8ed;font-size:11px;text-anchor:start}.axis-control{display:flex;justify-content:center;align-items:center;gap:7px;font-size:10px;color:#b9cbd8;margin-top:12px}.axis-control input{accent-color:rgb(var(--season-rgb))}.axis-explanation{text-align:center;font-size:8px}.guided-lesson{border:1px solid rgba(var(--season-rgb),.3);border-radius:12px;background:rgba(var(--season-rgb),.035);margin-top:19px;padding:15px}.guided-lesson summary{cursor:pointer;font-size:12px;color:rgb(var(--season-rgb));font-weight:600}.guided-lesson h3{font-size:15px;font-weight:500;color:#e1eaf0;margin-bottom:8px}.guided-lesson p{font-size:11px;line-height:1.8;color:#b9c9d5}.lesson-navigation{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px}.lesson-navigation span{font-size:10px;color:#99afbf}.lesson-navigation .control-button{padding:7px 12px}.control-button:disabled{opacity:.35;cursor:default}.lesson-season-actions{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}.lesson-season-actions[hidden],#lesson-axis-diagram[hidden],#hemisphere-comparison[hidden]{display:none}.hemisphere-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}.hemisphere-cards>div{border:1px solid rgba(var(--season-rgb),.25);border-radius:9px;padding:12px 10px}.hemisphere-cards small{font-size:8px;letter-spacing:.3px}.hemisphere-cards strong{display:block;font-size:20px;font-weight:400;color:rgb(var(--season-rgb));margin-top:7px}.guided-lesson .lesson-takeaway{border-top:1px solid var(--line);padding-top:12px;color:rgb(var(--season-rgb));font-size:10px}.guided-lesson .location-note{font-size:9px}#lesson-axis-diagram svg{width:100%}@media(max-width:650px){.explorer-dialog.expanded,.explorer-dialog:fullscreen{padding:16px}.explorer-window-actions .icon-button{width:30px;height:30px}.explorer-top h2{font-size:20px}}

.reference-overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1;overflow:hidden}.reference-overlay path{fill:none;stroke-width:1.2;stroke-linecap:round;vector-effect:non-scaling-stroke}.reference-equator{stroke:#88d6e7}.reference-tropic{stroke:#e9c789;stroke-dasharray:5 3}.reference-polar{stroke:#b5cbed;stroke-dasharray:2 4}.reference-prime{stroke:#dfb0d1}.reference-selected{stroke:#ffe4a1;stroke-width:2!important}.reference-normal{stroke:#abb4c4;stroke-dasharray:2 5;stroke-width:1.5}.reference-controls{border:1px solid #9bb4ca25;border-radius:10px;padding:10px 12px;margin-top:13px}.reference-controls summary{font-size:10px;color:#bbccda;cursor:pointer}.reference-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.reference-options label{display:flex;align-items:center;gap:5px;font-size:9px;color:#b9c9d5}.reference-options input{accent-color:rgb(var(--season-rgb));margin:0}.line-dot{width:12px;height:2px;display:inline-block;flex-shrink:0}.equator-dot{background:#88d6e7}.tropics-dot{background:#e9c789}.polar-dot{background:#b5cbed}.prime-dot{background:#dfb0d1}.normal-dot{background:#abb4c4}.tilt-label{font-size:11px;fill:#f0cb89}.longitude-label{display:block;font-size:11px;color:#d0dee7;margin-top:16px}#time-longitude{width:100%;accent-color:rgb(var(--season-rgb));margin-top:12px}.solar-time-cards{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0}.solar-time-cards>div{padding:12px 9px;border:1px solid rgba(var(--season-rgb),.25);border-radius:9px;min-width:0}.solar-time-cards small{font-size:8px;letter-spacing:0}.solar-time-cards strong{display:block;font-size:13px;font-weight:400;margin-top:8px;color:rgb(var(--season-rgb));font-variant-numeric:tabular-nums}.time-axis-lesson summary{color:#dfb0d1}@media(max-width:380px){.reference-options{grid-template-columns:1fr}.solar-time-cards{grid-template-columns:1fr}}

.lesson-progress-row{display:flex;align-items:center;gap:12px;margin-top:16px}.lesson-progress-row progress{width:100%;height:5px;accent-color:rgb(var(--season-rgb))}.lesson-progress-row span{font-size:9px;color:#aabcce;white-space:nowrap}.teacher-guide{border:1px solid #9fb6c329;padding:10px 12px;border-radius:8px}.teacher-guide summary,.lesson-example summary{font-size:10px}.teacher-guide ol{padding-left:20px;font-size:10px;color:#b4c5d1;line-height:1.8}.guided-lesson label{display:block;font-size:11px;color:#dce8ee;margin:15px 0 7px}.guided-lesson textarea{display:block;width:100%;resize:vertical;min-height:85px;max-height:300px;padding:11px;border:1px solid rgba(var(--season-rgb),.35);border-radius:9px;background:#06121ccc;color:#e6eef3;font:inherit;font-size:12px;line-height:1.6}.guided-lesson [hidden]{display:none!important}.prediction-review{padding:12px;background:#acc6d508;border-radius:9px;margin:15px 0}.prediction-review p{white-space:pre-wrap;overflow-wrap:anywhere;margin:6px 0 0}.prediction-review small{letter-spacing:.4px;font-size:9px}.lesson-example{margin:15px 0}.lesson-complete{border:1px solid rgba(var(--season-rgb),.35);border-radius:9px;padding:12px;color:rgb(var(--season-rgb))!important}.guided-lesson table{width:100%;border-collapse:collapse;font-size:11px;margin:15px 0;color:#cbd9e2}.guided-lesson th,.guided-lesson td{text-align:left;padding:10px 5px;border-bottom:1px solid var(--line);font-weight:400}.guided-lesson thead th{color:#8fa8bb;font-size:10px}.guided-lesson caption{text-align:left;font-size:10px;color:rgb(var(--season-rgb));padding:5px}.guided-lesson .lesson-intro{font-size:10px}

.lesson-launch{display:flex;margin:0 0 16px}.lesson-launch .control-button{color:rgb(var(--season-rgb));border-color:rgba(var(--season-rgb),.55);background:rgba(var(--season-rgb),.08)}

.rotation-checkbox{display:flex;align-items:center;gap:9px;font-size:12px;color:#dce7ed;margin:14px 0 7px;cursor:pointer}.rotation-checkbox input{accent-color:rgb(var(--season-rgb));width:17px;height:17px}.quiz-question{border:0;padding:0;margin:12px 0}.quiz-question legend{font-size:13px;line-height:1.6;color:#e1ebf1;margin-bottom:12px}.quiz-options{display:grid;gap:8px}.guided-lesson .quiz-option{display:flex;align-items:flex-start;gap:9px;margin:0;padding:11px 10px;border:1px solid #91aabd35;border-radius:9px;background:#07172370;font-size:11px;line-height:1.6;cursor:pointer}.quiz-option input{margin:4px 0 0;accent-color:rgb(var(--season-rgb));flex-shrink:0}.option-letter{color:rgb(var(--season-rgb));font-weight:600}.quiz-option:has(input:checked){border-color:rgba(var(--season-rgb),.7);background:rgba(var(--season-rgb),.1)}.quiz-hint{margin:10px 0 14px}.quiz-hint summary{font-size:10px}.quiz-feedback{padding:12px;border-left:2px solid rgb(var(--season-rgb));background:rgba(var(--season-rgb),.07);font-size:11px}.quiz-feedback[data-correct=true]{border-color:#9dcaa0}.dial-edge{fill:none;stroke:#cfb47d;stroke-width:1;opacity:.35}.dial-inner{fill:none;stroke:#d0b77f;stroke-width:.5;opacity:.15}.dial-tick{stroke:#d7bf8a;opacity:.32;stroke-width:.75}.dial-tick.month-tick{opacity:.65;stroke-width:1.2}.season-ribbon{fill:none;stroke-width:13;opacity:.2}.diagram #months text{fill:#c1cbd1;font-size:13px}.diagram #orbit{filter:drop-shadow(0 0 16px #d4ae5710)}@media(max-width:480px){.diagram #months text{font-size:14px}.guided-lesson .quiz-option{padding:12px 10px}}

.dial-key{text-align:center;color:#8497a8;font-size:8px;letter-spacing:.5px;margin:8px 0 0}

.daylight-insight{margin:24px 0 0;padding:15px 14px;border:1px solid #bda77c35;border-left:2px solid #c9b27e;border-radius:0 11px 11px 0;background:linear-gradient(115deg,#c4a46b13,#08152055)}.daylight-insight .insight-eyebrow{font-size:8px;letter-spacing:1.7px;color:#9cafbb;margin:0 0 8px}.daylight-insight h2{font-size:16px;font-weight:400;line-height:1.4;margin:0 0 10px;color:#e4cfaa}.daylight-values{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.daylight-values strong{font-size:24px;font-weight:400;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:-.5px}.daylight-values span{font-size:9px;color:#cbb58c}.insight-week{font-size:9px;color:#9fb1c1;margin:8px 0 0}.insight-context{font-size:8px;color:#8da1b3;line-height:1.6;margin:9px 0 0}.daylight-insight[data-trend=longer]{border-left-color:#9ccba1}.daylight-insight[data-trend=longer] h2{color:#b5d6b8}@media(max-width:850px){.daylight-insight{grid-column:1/-1;margin-top:10px}.daylight-values{justify-content:space-between}.daylight-values span{font-size:11px}}@media(max-width:480px){.daylight-insight{margin-top:17px;padding:13px 14px}.daylight-insight h2{font-size:16px}.insight-context{font-size:8px}}

.research-entry{color:#b9d5e5;text-decoration:none;font-size:12px;white-space:nowrap}footer{flex-wrap:wrap;gap:14px}

/* Two equal entry points from the live start screen. */
.camera-controls{gap:12px;flex-wrap:wrap}.camera-controls .discover-button{display:inline-flex;align-items:center;justify-content:center;min-width:0;width:180px;max-width:100%;min-height:46px;text-decoration:none}.camera-controls .research-button{background:#0a1b29dd;color:#efd29c;border-color:#d4b77f80;box-shadow:none}.camera-controls .research-button:hover{background:#173347}@media(max-width:480px){.camera-controls{gap:10px}.camera-controls .discover-button{width:calc(50% - 5px);padding:14px 10px}}

.model-badge{display:inline-block;color:#c7b48c;text-decoration:none;font-size:10px;margin:0 0 12px;border-bottom:1px dotted #c7b48c70}.advanced-view{margin:14px 0;border:1px solid #8da7bd30;border-radius:12px;padding:12px 14px}.advanced-view>summary{cursor:pointer;color:#abc3d3;font-size:12px;min-height:24px}.advanced-view[open]>summary{margin-bottom:14px}.control-button,.icon-button,.season-jump,.text-button{min-height:44px;min-width:44px}.text-button{display:inline-flex;align-items:center;justify-content:center;padding:8px;font-size:11px}.location-note{font-size:11px}.explorer-tabs .control-button,.season-jump{font-size:11px}.language-picker select{min-height:44px}.research-entry:focus-visible,.model-badge:focus-visible{outline:2px solid #8bd8ff;outline-offset:4px}

@media(max-width:850px){.orbital{display:flex;flex-direction:column}.camera-controls{order:0;margin:22px 0 0}.camera-controls+.travel{margin-top:26px}}

.purpose-link{display:block;text-align:center;color:#b4c8d5;font-size:11px;text-decoration:none;margin:14px 0 0}.purpose-link:hover{color:#f0d19b}.purpose-section{border-top:1px solid var(--line);padding:45px 0 30px;max-width:1100px;margin:30px auto 0;scroll-margin-top:24px}.purpose-section h2{font-family:Manrope,sans-serif;font-size:clamp(23px,3vw,34px);font-weight:500;margin:12px 0 16px}.purpose-intro{max-width:680px;line-height:1.8;color:#a9bfce}.purpose-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:28px}.purpose-grid article{background:#06131de8;border:1px solid var(--line);border-radius:14px;padding:25px}.purpose-number{font-size:10px;letter-spacing:1.7px;color:#d4b77f}.purpose-grid h3{font-size:18px;font-weight:500;margin:15px 0 12px}.purpose-grid p,.purpose-grid li,.daily-use,.purpose-faq p{font-size:13px;color:#a9bfce;line-height:1.8}.purpose-grid ul{padding-left:18px}.daily-use{margin:24px 0}.purpose-faq{border-top:1px solid var(--line);padding:15px 0}.purpose-faq summary{cursor:pointer;color:#c8dce9;font-size:13px;min-height:28px}.purpose-faq p{max-width:800px}footer #camera-quick{margin:0;color:#a9bfce}html{scroll-behavior:smooth}@media(max-width:600px){.purpose-grid{grid-template-columns:1fr}.purpose-grid article{padding:21px}.purpose-section{padding-top:30px;margin-top:22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.daylight-location-label{font-size:10px;color:#a9bdcb;margin:6px 0 12px}.daylight-values{flex-wrap:wrap}.daylight-values>span{font-size:11px}.insight-sun-times{display:grid;grid-template-columns:1fr 1fr;gap:14px;border-top:1px solid #c8d9e51c;margin-top:14px;padding-top:12px}.insight-sun-times small{display:block;color:#9eb2c0;font-size:10px}.insight-sun-times strong{display:block;font-size:18px;font-weight:500;margin-top:5px;font-variant-numeric:tabular-nums}.daylight-insight{max-width:330px}@media(max-width:850px){.daylight-insight{max-width:none}}

.insight-remaining{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:5px 12px;margin-top:13px}.insight-remaining small{color:#a8bbc9;font-size:11px}.insight-remaining strong{font-size:15px;font-weight:500;color:#eed39e;font-variant-numeric:tabular-nums}

/* Compact daylight summary; retain readable values and all daily metrics. */
.daylight-insight{padding:11px 13px}.daylight-insight .insight-eyebrow{margin-bottom:4px;letter-spacing:1.2px}.daylight-location-label{margin:0 0 8px}.daylight-values{gap:5px 10px}.daylight-values strong{font-size:22px}.daylight-values>span{font-size:10px}.insight-remaining{margin-top:8px}.insight-remaining small{font-size:10px}.insight-remaining strong{font-size:14px}.insight-sun-times{gap:16px;margin-top:8px;padding-top:8px}.insight-sun-times>div{display:flex;align-items:baseline;justify-content:space-between;gap:6px}.insight-sun-times strong{font-size:15px;margin:0}.insight-sun-times small{font-size:10px}@media(max-width:480px){.daylight-insight{padding:11px 13px;margin-top:13px}}

/* Remaining daylight is the primary daily-use metric. */
.insight-remaining{display:grid;grid-template-columns:minmax(0,1fr);gap:5px;margin-top:10px;padding:12px 14px;border:1px solid #e3b76880;border-radius:9px;background:linear-gradient(115deg,#704c22,#382816);box-shadow:0 4px 18px #00000024,inset 3px 0 0 #efc475}.insight-remaining small{color:#ffe3ad;font-size:11px;font-weight:500;letter-spacing:.3px}.insight-remaining strong{display:block;color:#fff5df;font-size:clamp(25px,3vw,29px);font-weight:600;line-height:1.15;letter-spacing:-.4px;overflow-wrap:anywhere}

/* OrbitalArcs wordmark fits the existing compact header. */
.brand{letter-spacing:1.6px}.brand .edition{letter-spacing:1.2px}@media(max-width:480px){.brand{letter-spacing:.6px;gap:6px}.brand .edition{display:none}}

/* Keep language and model information visible in portrait phone headers. */
.site-header{height:auto;min-height:64px;align-items:center;gap:12px;padding:8px 0}.site-header .language-picker{margin:0 0 0 auto}.site-header .language-picker select{color:#f0f5fa;background:#102332;border:1px solid #9dbcd080;font-size:12px;min-height:44px;max-width:165px;padding:9px 11px;border-radius:12px}.site-header #info{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 12px;border:1px solid #9dbcd080;border-radius:12px;background:#102332;color:#f0f5fa;font-size:12px;white-space:nowrap}.site-header .brand{white-space:nowrap}@media(max-width:600px){.site-header{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 10px;padding:5px 0 12px}.site-header .brand{grid-column:1;grid-row:1;font-size:14px;letter-spacing:.6px;min-width:0}.site-header .edition{display:none}.site-header .live{grid-column:2;grid-row:1;justify-self:end;margin:0;padding:0;font-size:8px;letter-spacing:.6px}.site-header .language-picker{grid-column:1;grid-row:2;display:block;margin:0;min-width:0}.site-header .language-picker select{display:block;width:100%;max-width:none;min-width:0;font-size:12px}.site-header #info{grid-column:2;grid-row:2;width:100%;min-width:0;font-size:12px;padding:9px 8px}.site-header .brand-icon{font-size:22px}}

.seo-languages{display:flex;justify-content:center;gap:12px;padding:24px 8px;font-size:12px;position:relative}.seo-languages a{color:#b9cddc;padding:10px;min-height:44px}.catalog-note a{color:#a9bdcb}

.site-contact{position:relative;text-align:center;color:#93a9b9;font-size:13px;margin:0;padding:8px 12px 28px}.site-contact a{display:inline-block;color:#d8c08f;text-decoration:none;padding:12px 4px;min-height:44px}.site-contact a:hover{text-decoration:underline}.site-contact a:focus-visible{outline:2px solid #8bd8ff;outline-offset:3px}