:root{--bg-deep: #060a14;--bg-panel: rgba(13, 20, 38, .82);--bg-panel-solid: #101830;--bg-chip: rgba(255, 255, 255, .08);--border-soft: rgba(140, 170, 255, .18);--text-main: #eef2fb;--text-dim: #9fb0d0;--accent: #4fc3f7;--accent-deep: #0288d1;--sun: #ffc65c;--day: #ffd54f;--night: #7986cb;--good: #66bb6a;--warn: #ff8a65;--radius: 14px;--radius-s: 9px;--shadow: 0 8px 28px rgba(0, 0, 0, .45);--font: "Pretendard", "Noto Sans KR", "Malgun Gothic", -apple-system, "Segoe UI", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden;font-family:var(--font);background:var(--bg-deep);color:var(--text-main);-webkit-text-size-adjust:100%}button{font-family:inherit;cursor:pointer}input,output{font-family:inherit}#app{display:grid;grid-template-rows:auto 1fr auto auto;grid-template-columns:minmax(0,1fr);width:100%;max-width:100vw;overflow-x:hidden;height:100dvh;min-height:480px}#app>*{min-width:0}#topbar{display:flex;align-items:center;gap:14px;padding:8px 14px;background:linear-gradient(180deg,#101830f5,#0a0f1ee6);border-bottom:1px solid var(--border-soft);z-index:30;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px}.brand-icon{font-size:30px;filter:drop-shadow(0 0 10px rgba(79,195,247,.6))}.brand-text h1{font-size:19px;letter-spacing:.5px}.brand-text .subtitle{font-size:11.5px;color:var(--text-dim)}#mode-tabs{display:flex;gap:6px;background:var(--bg-chip);padding:4px;border-radius:12px}.mode-tab{border:none;background:transparent;color:var(--text-dim);font-size:14.5px;font-weight:600;padding:8px 14px;border-radius:9px;min-height:40px;transition:all .18s}.mode-tab:hover{color:var(--text-main)}.mode-tab.active{background:var(--accent);color:#04263c;box-shadow:0 2px 10px #4fc3f766}.top-status{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;gap:7px;background:var(--bg-chip);border:1px solid var(--border-soft);border-radius:999px;padding:7px 14px;font-size:14px;color:var(--text-main);min-height:40px}.clock-chip strong{font-size:17px;color:var(--sun);font-variant-numeric:tabular-nums}.chip-sub{font-size:11px;color:var(--text-dim)}.location-chip{transition:background .15s}.location-chip:hover{background:#4fc3f72e}.btn{border:1px solid var(--border-soft);background:var(--bg-chip);color:var(--text-main);border-radius:var(--radius-s);padding:8px 14px;font-size:14px;font-weight:600;min-height:40px;transition:background .15s,transform .1s,box-shadow .15s;touch-action:manipulation}.btn:hover{background:#ffffff26}.btn:active{transform:scale(.96)}.btn-accent{background:var(--accent);color:#04263c;border-color:transparent}.btn-accent:hover{background:#81d4fa}.btn-ghost{background:transparent}.btn-round{border-radius:50%;width:48px;height:48px;font-size:18px;padding:0}.btn-mini{padding:5px 10px;min-height:34px;font-size:13px}.btn-mini.active{background:var(--accent);color:#04263c}.btn-why{background:#ffc65c24;border-color:#ffc65c66;color:var(--sun)}.btn-why:hover{background:#ffc65c42}#views{--split: 50%;display:grid;grid-template-columns:calc(var(--split) - 5px) 10px calc(100% - var(--split) - 5px);background:#000;min-height:0;position:relative}#views.max-space{grid-template-columns:1fr!important;grid-template-rows:1fr!important}#views.max-space #sky-view,#views.max-space #view-divider{display:none}#views.max-sky{grid-template-columns:1fr!important;grid-template-rows:1fr!important}#views.max-sky #space-view,#views.max-sky #view-divider{display:none}#view-divider{position:relative;background:#8caaff1a;cursor:col-resize;touch-action:none;display:flex;align-items:center;justify-content:center;z-index:25;transition:background .15s}#view-divider:hover{background:#4fc3f74d}.divider-grip{width:4px;height:46px;border-radius:3px;background:#bed2fa8c;pointer-events:none}.divider-presets{position:absolute;top:62%;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:5px;opacity:.9}.divider-presets .btn-mini{white-space:nowrap;background:#0d1426e6;font-size:11px;padding:4px 8px;min-height:26px}body.split-dragging{user-select:none;-webkit-user-select:none;cursor:col-resize}body.split-dragging #views canvas{pointer-events:none}.view-panel{position:relative;overflow:hidden;min-height:0;min-width:0;background:#000}.view-panel canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}.view-overlay{position:absolute;inset:0;pointer-events:none;display:flex;flex-direction:column;padding:10px}.view-overlay>*{pointer-events:auto}.view-head{display:flex;align-items:flex-start;gap:8px;flex-wrap:wrap}.view-chip{font-size:13.5px;font-weight:700;padding:6px 12px;border-radius:999px;backdrop-filter:blur(6px);border:1px solid var(--border-soft)}.space-chip{background:#26428d8c}.sky-chip{background:#02777480}.badge{font-size:13.5px;font-weight:700;padding:6px 12px;border-radius:999px;backdrop-filter:blur(6px)}.badge-day{background:#ffd54f38;color:var(--day);border:1px solid rgba(255,213,79,.55)}.badge-night{background:#7986cb40;color:#b3bdf5;border:1px solid rgba(121,134,203,.6)}.badge-info{background:#4fc3f726;color:#a6e2ff;border:1px solid rgba(79,195,247,.4)}.view-toggles{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;max-width:420px}.tgl{border:1px solid var(--border-soft);border-radius:999px;background:#080c18a6;color:var(--text-dim);font-size:12.5px;font-weight:600;padding:6px 11px;min-height:34px;backdrop-filter:blur(4px);transition:all .15s}.tgl.on{background:#4fc3f738;color:#bfe9ff;border-color:#4fc3f78c}.tgl:active{transform:scale(.95)}.view-camera{position:absolute;right:10px;top:10px;display:flex;flex-direction:column;gap:6px}#sky-camera-btns{flex-direction:row;top:auto;bottom:12px;right:12px}#sky-camera-btns .btn-mini{width:42px}.scale-note{margin-top:auto;font-size:11px;color:#becdebbf;background:#0508128c;border-radius:8px;padding:4px 9px;align-self:flex-start;backdrop-filter:blur(4px)}.bottom-cards{margin-top:auto;align-self:flex-start;display:flex;flex-direction:column;gap:8px}.bottom-cards .season-card{margin-top:0;align-self:flex-start}.moon-card h3{color:#dfe6f8}.moon-card p{font-size:13px}.season-card{margin-top:auto;align-self:flex-start;background:var(--bg-panel);border:1px solid var(--border-soft);border-radius:var(--radius);padding:10px 14px;max-width:300px;backdrop-filter:blur(8px);box-shadow:var(--shadow)}.season-card h3{font-size:15px;margin-bottom:3px}.season-card p{font-size:13.5px;color:var(--text-main)}.season-card-note{font-size:11.5px!important;color:var(--text-dim)!important;margin-top:5px}.season-card.hidden{display:none}.learn-point{text-align:center;padding:7px 16px;font-size:14.5px;font-weight:600;color:#ffe9bd;background:linear-gradient(90deg,transparent,rgba(255,198,92,.12),transparent);border-top:1px solid rgba(255,198,92,.15);min-height:34px}#dock{background:linear-gradient(0deg,#101830f7,#0a0f1eeb);border-top:1px solid var(--border-soft);padding:8px 14px 10px;display:flex;flex-direction:column;gap:8px;z-index:30;position:relative}#dock-collapse{position:absolute;top:-15px;left:50%;transform:translate(-50%);width:46px;height:20px;border-radius:10px 10px 0 0;border:1px solid var(--border-soft);border-bottom:none;background:#101830f7;color:var(--text-dim);font-size:13px;line-height:1;z-index:31}#dock-collapse:hover{color:var(--accent)}#dock.collapsed .dock-presets,#dock.collapsed .date-inputs,#dock.collapsed .app-credit,#dock.collapsed .footer-link,#dock.collapsed .footer-sep{display:none}.dock-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.time-transport{display:flex;align-items:center;gap:10px}.speed-group{display:flex;gap:4px;background:var(--bg-chip);border-radius:10px;padding:4px}.btn-speed{border:none;background:transparent;color:var(--text-dim);font-size:12.5px;padding:7px 10px;min-height:36px;border-radius:7px}.btn-speed.active{background:var(--accent);color:#04263c;font-weight:700}.time-sliders{display:flex;gap:18px;flex:1;min-width:260px}.slider-label{display:flex;align-items:center;gap:8px;flex:1;font-size:13px}.slider-name{white-space:nowrap;color:var(--text-dim);font-weight:600}.slider-label input[type=range]{flex:1;height:30px;accent-color:var(--accent);min-width:90px}.slider-label output{font-variant-numeric:tabular-nums;min-width:58px;font-weight:700;color:var(--sun);font-size:13.5px}.date-inputs{display:flex;align-items:center;gap:3px}.date-inputs input{width:52px;background:var(--bg-chip);border:1px solid var(--border-soft);color:var(--text-main);border-radius:7px;padding:8px 4px;font-size:14px;text-align:center}.date-inputs input#in-year{width:66px}.date-inputs .unit{font-size:12.5px;color:var(--text-dim);margin-right:4px}.preset-group{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.preset-label{font-size:12px;color:var(--text-dim);font-weight:700;margin-right:2px}.btn-preset{font-size:13px;padding:7px 11px}.side-panel{position:fixed;top:64px;right:12px;bottom:150px;width:min(390px,92vw);background:var(--bg-panel);backdrop-filter:blur(14px);border:1px solid var(--border-soft);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;z-index:40;transition:transform .28s ease,opacity .28s ease}.side-panel.collapsed{transform:translate(calc(100% + 24px));opacity:0;pointer-events:none}.side-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px 8px}.side-head h2{font-size:17px}.side-body{overflow-y:auto;padding:4px 16px 16px;flex:1}.side-open-btn{position:fixed;right:12px;top:72px;z-index:39;background:var(--accent);color:#04263c;border:none;border-radius:999px;padding:10px 16px;font-weight:700;font-size:14px;box-shadow:var(--shadow)}.side-open-btn.hidden{display:none}.lesson-step h3{font-size:16.5px;margin-bottom:8px;color:#bfe9ff}.lesson-step p{font-size:14.5px;line-height:1.65;margin-bottom:10px}.lesson-step .highlight{color:var(--sun);font-weight:700}.lesson-nav{display:flex;gap:8px;margin-top:12px}.lesson-nav .btn{flex:1}.lesson-progress{display:flex;gap:5px;justify-content:center;margin:10px 0 4px}.lesson-dot{width:9px;height:9px;border-radius:50%;background:#fff3;transition:background .2s}.lesson-dot.done{background:var(--accent)}.lesson-dot.now{background:var(--sun);box-shadow:0 0 8px var(--sun)}.concept-box{background:#4fc3f71a;border:1px solid rgba(79,195,247,.35);border-radius:var(--radius-s);padding:10px 12px;margin:10px 0;font-size:14px;line-height:1.6}.misconception-box{background:#ff8a651a;border:1px solid rgba(255,138,101,.4);border-radius:var(--radius-s);padding:10px 12px;margin:10px 0;font-size:13.5px;line-height:1.6}.misconception-box strong{color:var(--warn)}.mission-item{margin-bottom:10px}.mission-q{font-size:15px;font-weight:700;line-height:1.55;margin-bottom:10px}.mission-choices{display:flex;flex-direction:column;gap:7px}.mission-choice{text-align:left;font-size:14.5px;padding:11px 14px;border-radius:var(--radius-s);border:1px solid var(--border-soft);background:var(--bg-chip);color:var(--text-main);min-height:44px}.mission-choice:hover{background:#ffffff24}.mission-choice.correct{background:#66bb6a40;border-color:var(--good)}.mission-choice.wrong{background:#ff8a6533;border-color:var(--warn)}.mission-feedback{font-size:14px;line-height:1.6;margin-top:10px;padding:10px 12px;border-radius:var(--radius-s)}.mission-feedback.ok{background:#66bb6a26;border:1px solid rgba(102,187,106,.45)}.mission-feedback.no{background:#ff8a651f;border:1px solid rgba(255,138,101,.4)}.mission-score{text-align:center;font-size:14px;color:var(--text-dim);margin-bottom:10px}.mission-list-btn{width:100%;text-align:left;margin-bottom:7px;font-size:14px;display:flex;justify-content:space-between;align-items:center}.mission-check-live{background:#ffc65c1a;border:1px dashed rgba(255,198,92,.5);border-radius:var(--radius-s);padding:10px 12px;margin-top:10px;font-size:13.5px}.explore-task{background:var(--bg-chip);border-radius:var(--radius-s);padding:10px 12px;margin-bottom:8px;font-size:13.5px;line-height:1.55}.explore-task strong{color:#bfe9ff}#record-text{width:100%;min-height:70px;background:#0000004d;border:1px solid var(--border-soft);border-radius:var(--radius-s);color:var(--text-main);padding:9px;font-size:14px;resize:vertical}.record-entry{background:#00000040;border-radius:var(--radius-s);padding:8px 10px;margin-top:7px;font-size:12.5px;line-height:1.5;color:var(--text-dim)}.record-entry b{color:var(--text-main)}.record-btns{display:flex;gap:7px;margin-top:8px}.modal-overlay{position:fixed;inset:0;background:#03060eb8;display:flex;align-items:center;justify-content:center;z-index:60;backdrop-filter:blur(4px);padding:16px}.modal-overlay.hidden{display:none}.modal{background:var(--bg-panel-solid);border:1px solid var(--border-soft);border-radius:18px;padding:22px 24px;max-width:620px;width:100%;max-height:86dvh;overflow-y:auto;box-shadow:var(--shadow)}.modal h2{font-size:19px;margin-bottom:14px}.modal .btn-accent{margin-top:14px;width:100%;min-height:46px;font-size:15px}.explain-modal .explain-figure{text-align:center;font-size:40px;margin:6px 0 10px;letter-spacing:8px}.explain-modal p{font-size:15px;line-height:1.75;margin-bottom:10px}.explain-modal .concept-box{font-size:14.5px}.explain-modal .scale-note-modal{font-size:11.5px;color:var(--text-dim);margin-top:6px}.phase-flow{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:4px 0 14px}.phase-item{background:var(--bg-chip);border:1px solid var(--border-soft);border-radius:var(--radius-s);padding:10px 8px 8px;width:96px;text-align:center;display:flex;flex-direction:column;gap:3px;align-items:center}.phase-item span{font-size:30px;line-height:1}.phase-item b{font-size:13px;color:var(--text-main)}.phase-item small{font-size:10.5px;color:var(--text-dim)}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.help-item{background:var(--bg-chip);border-radius:var(--radius-s);padding:10px 12px}.help-item strong{display:block;margin-bottom:4px;font-size:14px}.help-item p{font-size:13px;color:var(--text-dim);line-height:1.55}.help-keys{margin-top:12px;font-size:13px;color:var(--text-dim);text-align:center}kbd{background:var(--bg-chip);border:1px solid var(--border-soft);border-radius:5px;padding:2px 7px;font-size:12px}.loc-btns{display:flex;gap:10px;margin-bottom:14px}.btn-loc{flex:1;padding:14px;font-size:16px;line-height:1.5}.btn-loc small{color:var(--text-dim);font-weight:400;font-size:12px}.loc-custom{border-top:1px solid var(--border-soft);padding-top:12px;display:flex;flex-wrap:wrap;gap:9px;align-items:center}.loc-custom h3{width:100%;font-size:14.5px;color:var(--text-dim)}.loc-custom label{font-size:14px;display:flex;align-items:center;gap:6px}.loc-custom input[type=number]{width:86px;background:var(--bg-chip);border:1px solid var(--border-soft);color:var(--text-main);border-radius:7px;padding:9px 7px;font-size:14px}.loc-custom input[type=text]{flex:1;min-width:130px;background:var(--bg-chip);border:1px solid var(--border-soft);color:var(--text-main);border-radius:7px;padding:9px;font-size:14px}.location-modal .btn-ghost{margin-top:10px;width:100%}#loading{position:fixed;inset:0;background:var(--bg-deep);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;z-index:100;transition:opacity .5s}#loading.fade{opacity:0;pointer-events:none}#loading p{color:var(--text-dim);font-size:15px}.loading-earth{font-size:64px;animation:spin-slow 3s linear infinite}@keyframes spin-slow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (orientation: portrait),(max-width: 860px){#views{grid-template-columns:1fr;grid-template-rows:calc(var(--split) - 5px) 10px calc(100% - var(--split) - 5px)}#view-divider{cursor:row-resize}.divider-grip{width:46px;height:4px}.divider-presets{top:50%;left:auto;right:10px;transform:translateY(-50%);flex-direction:row}.divider-grip{position:absolute;left:24px}body.split-dragging{cursor:row-resize}.brand-text .subtitle{display:none}.brand-text h1{font-size:16.5px}#topbar{gap:8px;padding:6px 10px}.mode-tab{padding:7px 10px;font-size:13px}.date-inputs{display:none}.help-grid{grid-template-columns:1fr}.side-panel{inset:auto 8px 8px;width:auto;max-height:46dvh}.side-open-btn{top:122px}.view-toggles{max-width:320px}.scale-note{font-size:10px}.learn-point{font-size:12.5px}.preset-label{display:none}}@media (max-width: 1240px){.btn-label,.brand-text{display:none}#topbar{flex-wrap:nowrap;overflow-x:auto;max-width:100vw;scrollbar-width:thin}#topbar>*{flex:0 0 auto}.top-status{margin-left:auto;flex-wrap:nowrap}.dock-row{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;padding-bottom:3px}.dock-row>*{flex:0 0 auto}.time-sliders{min-width:430px;flex:0 0 auto}.slider-label{min-width:210px}}@media (max-width: 900px){.tab-label{display:none}.view-tab{padding:8px 12px;font-size:17px}.clock-chip{flex-direction:column;align-items:flex-start;gap:0;line-height:1.2;padding:4px 10px}.clock-chip #clock-date{font-size:10.5px;color:var(--text-dim)}.clock-chip .chip-sub{display:none}.top-status{gap:5px}.top-status .btn{padding:7px 10px}}@media (max-height: 800px){#topbar{padding:4px 10px;gap:8px}.brand-icon{font-size:22px}.brand-text h1{font-size:16px}.brand-text .subtitle{display:none}.mode-tab{padding:5px 10px;font-size:12.5px;min-height:32px}#mode-tabs{padding:3px}.chip{min-height:32px;padding:4px 10px;font-size:12px}.clock-chip strong{font-size:14px}.top-status .btn{min-height:32px;padding:5px 10px;font-size:12.5px}.learn-point{min-height:24px;padding:3px 10px;font-size:12px}#dock{padding:4px 10px 5px;gap:4px}.btn-round{width:38px;height:38px;font-size:15px}.btn-speed{padding:4px 8px;min-height:27px;font-size:11.5px}.btn-preset{font-size:11.5px;padding:4px 8px;min-height:30px}.date-inputs input{padding:5px 3px;font-size:12.5px}.app-credit{display:none}.side-panel{top:52px;bottom:118px}.tgl{font-size:11px;padding:4px 8px;min-height:27px}.btn-mini{min-height:28px;font-size:11.5px;padding:4px 8px}}@media (max-height: 690px){.date-inputs,.learn-point,.scale-note{display:none}.season-card{max-width:240px;padding:7px 10px}.season-card h3{font-size:13px}.season-card p{font-size:11.5px}}@media (max-height: 520px){html,body{overflow-y:auto}#app{height:auto;min-height:100dvh}#views{height:400px}}@media (max-width: 520px){.btn-preset{font-size:11.5px;padding:6px 8px}.speed-group .btn-speed{font-size:11px;padding:6px 7px}.top-status{gap:5px}.clock-chip{font-size:12px;padding:5px 9px}.clock-chip strong{font-size:14px}#topbar{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;max-width:100vw}#topbar>*{flex:0 0 auto}.top-status{margin-left:0;flex-wrap:nowrap}.brand-icon{font-size:20px}.brand-text h1{font-size:14.5px;white-space:nowrap}.mode-tab{padding:5px 8px;font-size:12px}.view-toggles{max-width:250px}}.btn-quiz-link{display:inline-flex;align-items:center;justify-content:center;gap:5px;text-decoration:none;white-space:nowrap;color:#ffe9bd;border-color:#ffc8578c;background:#ffc8571f}.btn-quiz-link:hover{color:#fff;border-color:#ffc857e6;background:#ffc85738}.lesson-quiz-link{display:flex;width:100%;min-height:46px;margin-top:12px;align-items:center;justify-content:center;text-decoration:none;font-weight:700;box-sizing:border-box}.hidden{display:none!important}.badge-freeze{background:#ff8a6524;color:#ffbfa6;border:1px solid rgba(255,138,101,.5)}.slider-label.locked{opacity:.42}.slider-label.locked input{cursor:not-allowed}#gauge-toast{position:fixed;left:50%;transform:translate(-50%);bottom:175px;z-index:70;background:var(--bg-panel-solid);border:1px solid rgba(255,138,101,.55);color:#ffd9c7;border-radius:999px;padding:11px 18px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .25s;max-width:92vw;text-align:center}#gauge-toast.show{opacity:1}#loading .credit{margin-top:22px;font-size:12.5px;color:#7787a8}.btn-info{font-size:17px;font-weight:700;color:#9fc8ef}.btn-info:hover{color:var(--accent)}.app-credit{text-align:center;font-size:11px;color:#6c7a99;margin-top:5px;letter-spacing:.2px}.footer-sep{margin:0 4px;color:#4a5877}.footer-link{background:none;border:none;padding:2px 3px;font-size:11px;color:#8ea3cc;text-decoration:underline;text-underline-offset:2px;cursor:pointer;min-height:24px}.footer-link:hover{color:var(--accent)}.btn-why-sky{font-size:12px;padding:5px 10px;min-height:30px;backdrop-filter:blur(4px)}.ext-mark{font-size:11px;opacity:.8}.info-admin-note{margin-top:12px;padding:10px 12px;background:#8caaff14;border:1px solid var(--border-soft);border-radius:var(--radius-s);font-size:12px;color:var(--text-dim);line-height:1.6}.docs-modal{max-width:660px}.docs-body{font-size:13.5px;line-height:1.7;color:var(--text-main)}.docs-body h3{font-size:14.5px;margin:14px 0 6px;color:#bfe9ff}.docs-body p{margin-bottom:8px}.docs-list{margin:6px 0 6px 18px}.docs-list li{margin-bottom:5px}.docs-table{width:100%;border-collapse:collapse;margin-top:6px;font-size:12.5px}.docs-table th,.docs-table td{border:1px solid var(--border-soft);padding:6px 9px;text-align:left}.docs-table th{width:34%;background:#8caaff14;color:var(--text-dim);font-weight:600}.docs-note{font-size:12px;color:var(--text-dim)}.help-info-hint{margin-top:10px;font-size:12.5px;color:var(--text-dim);text-align:center}.help-info-hint strong{color:#9fc8ef}.about-box{margin-top:14px;background:var(--bg-chip);border:1px solid var(--border-soft);border-radius:var(--radius-s);padding:12px 14px}.about-box h3{font-size:14px;margin-bottom:6px;color:#bfe9ff}.about-box p{font-size:12.5px;color:var(--text-dim);line-height:1.65}.about-box .about-meta{margin-top:8px;color:var(--text-main)}.about-box .about-meta b{color:#bfe9ff;font-weight:600;margin-right:4px}#view-tabs{display:flex;gap:6px;background:var(--bg-chip);padding:4px;border-radius:12px}.view-tab{border:none;background:transparent;color:var(--text-dim);font-size:14.5px;font-weight:600;padding:8px 15px;border-radius:9px;min-height:40px;transition:all .18s;white-space:nowrap}.view-tab:hover{color:var(--text-main)}.view-tab.active{background:var(--accent);color:#04263c;box-shadow:0 2px 10px #4fc3f766}#views[data-view=earth] #solar-view{display:none}#views[data-view=solar],#views[data-view=sky]{grid-template-columns:1fr!important;grid-template-rows:1fr!important}#views[data-view=solar] #space-view,#views[data-view=solar] #sky-view,#views[data-view=solar] #view-divider,#views[data-view=sky] #space-view,#views[data-view=sky] #solar-view,#views[data-view=sky] #view-divider{display:none}.solar-chip{background:#966c1880}#solar-view .view-camera{flex-direction:column}#planet-card{order:2;margin-top:auto;max-width:340px}#solar-view .scale-note{order:3;margin-top:6px}.planet-facts{margin:2px 0 0 16px;font-size:13.5px;line-height:1.65}.planet-facts li{margin-bottom:2px}.planet-compare-order{font-size:13.5px;line-height:1.6}.planet-more{margin-top:8px}.planet-more-head{font-size:12.5px;color:var(--text-dim);margin-bottom:5px}.planet-more .docs-table{font-size:11.5px}.planet-more .docs-table th{width:42%}.card-actions{display:flex;flex-wrap:wrap;gap:5px;margin-top:9px}.card-actions .btn-mini{font-size:11.5px;padding:5px 9px;min-height:30px}.planet-tip{position:fixed;z-index:45;pointer-events:none;background:#0a1020eb;border:1px solid var(--border-soft);border-radius:8px;padding:6px 11px;font-size:12.5px;color:var(--text-main);transform:translate(-50%);white-space:nowrap;box-shadow:var(--shadow)}.planet-tip b{color:#bfe9ff}.view-actions{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}.btn.active{background:var(--accent);color:#04263c;border-color:transparent}.drawer-scrim{position:fixed;inset:0;background:#03060e73;z-index:48;backdrop-filter:blur(1px)}.drawer-scrim.hidden{display:none}.drawer{position:fixed;top:0;right:0;bottom:0;width:min(340px,90vw);background:var(--bg-panel-solid);border-left:1px solid var(--border-soft);box-shadow:var(--shadow);z-index:49;display:flex;flex-direction:column;transition:transform .25s ease}.drawer.hidden{transform:translate(100%);pointer-events:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 10px;border-bottom:1px solid var(--border-soft)}.drawer-head h2{font-size:17px}.drawer-body{overflow-y:auto;padding:12px 16px 20px;flex:1}.drawer-sec{margin-bottom:18px}.drawer-sec.hidden{display:none}.drawer-sec h3{font-size:13px;color:var(--text-dim);margin-bottom:8px;letter-spacing:.4px}.tgl-grid{display:flex;flex-wrap:wrap;gap:6px}.tgl-grid .tgl{flex:0 1 auto}.scale-grid .tgl{flex:1 1 100%;text-align:center;justify-content:center}.drawer-action{width:100%;margin-top:8px}.drawer-note{margin-top:8px;font-size:11.5px;color:var(--text-dim);line-height:1.6;background:var(--bg-chip);border-radius:var(--radius-s);padding:8px 10px}#side-panel #mode-tabs{display:flex;gap:5px;padding:0 16px 10px;background:transparent}#side-panel .mode-tab{flex:1;padding:7px 6px;font-size:13px;min-height:36px}.acc{border:1px solid var(--border-soft);border-radius:var(--radius-s);margin-bottom:8px;background:#ffffff08}.acc.hidden{display:none}.acc>summary{list-style:none;cursor:pointer;user-select:none;padding:11px 13px;font-size:13.5px;font-weight:700;color:var(--text-main);display:flex;align-items:center;justify-content:space-between;min-height:42px}.acc>summary::-webkit-details-marker{display:none}.acc>summary:after{content:"▾";color:var(--text-dim);transition:transform .18s}.acc[open]>summary:after{transform:rotate(180deg)}.acc>summary:hover{color:var(--accent)}.acc-body{padding:2px 13px 11px;display:flex;flex-direction:column;gap:2px}.chk,.rad{display:flex;align-items:center;gap:9px;padding:7px 6px;border-radius:7px;cursor:pointer;font-size:13.5px;color:var(--text-main);min-height:38px}.chk:hover,.rad:hover{background:#ffffff0f}.chk input,.rad input{width:18px;height:18px;accent-color:var(--accent);margin:0;flex:0 0 auto;cursor:pointer}.chk input:not(:checked)+span,.rad input:not(:checked)+span{color:var(--text-dim)}.drawer-reset{width:100%;margin-top:4px}#course-tabs{display:flex;gap:5px;padding:0 16px 8px}.course-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;border:1px solid var(--border-soft);background:var(--bg-chip);color:var(--text-dim);border-radius:var(--radius-s);padding:8px 4px;font-size:12.5px;font-weight:700;min-height:48px;transition:all .15s}.course-tab small{font-size:9.5px;font-weight:400;opacity:.85}.course-tab:hover{color:var(--text-main)}.course-tab.active{background:#4fc3f733;color:#bfe9ff;border-color:#4fc3f799}#mode-tabs.hidden{display:none}.free-intro{font-size:13px;color:var(--text-dim);margin-bottom:10px;line-height:1.6}.free-item{width:100%;display:flex;align-items:flex-start;gap:10px;text-align:left;margin-bottom:7px;padding:10px 12px}.free-icon{font-size:20px;line-height:1.2}.free-text b{display:block;font-size:13.5px;margin-bottom:2px}.free-text small{font-size:11.5px;color:var(--text-dim);font-weight:400;line-height:1.5}.quiz-modal{max-width:480px}.quiz-list{display:flex;flex-direction:column;gap:9px}.quiz-item{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius-s);border:1px solid var(--border-soft);background:var(--bg-chip);color:var(--text-main);text-decoration:none;min-height:62px;transition:all .15s}.quiz-item:hover{background:#ffffff1f;border-color:var(--accent)}.quiz-item.recommended{border-color:#4fc3f7b3;background:#4fc3f71f}.quiz-item.disabled{opacity:.5;cursor:not-allowed}.quiz-item.disabled:hover{background:var(--bg-chip);border-color:var(--border-soft)}.quiz-icon{font-size:24px}.quiz-text{flex:1;display:flex;flex-direction:column;gap:2px}.quiz-text b{font-size:14.5px}.quiz-text small{font-size:11.5px;color:var(--text-dim)}.quiz-pending{color:var(--warn)!important;font-weight:600}.quiz-go{font-size:15px;color:var(--text-dim)}.quiz-note{margin-top:12px;font-size:11.5px;color:var(--text-dim);text-align:center}.planet-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:7px}.planet-tags span{font-size:11px;padding:3px 8px;border-radius:999px;background:#4fc3f724;color:#bfe9ff}.planet-facts-p{font-size:13.5px;line-height:1.65}.planet-more h4{font-size:12.5px;color:#bfe9ff;margin:10px 0 5px}.planet-hi{margin:0 0 4px 16px;font-size:12px;line-height:1.55;color:var(--text-dim)}.planet-hi li{margin-bottom:5px}.planet-hi b{color:var(--text-main)}.note-strong{color:#ffe9bd!important;font-weight:600}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::-webkit-scrollbar{width:9px}::-webkit-scrollbar-thumb{background:#8caaff40;border-radius:5px}::-webkit-scrollbar-track{background:transparent}