@charset "UTF-8";
.route-hud .route-actual{padding:6px 0;margin:5px 0;border-top:1px solid #cde0d3;border-bottom:1px solid #cde0d3;gap:8px;font-size:10px}.route-actual b{display:block;font-size:15px;font-variant-numeric:tabular-nums}
.glass-quick{position:absolute;top:120px;left:20px;display:flex;gap:6px;align-items:center;padding:8px 11px;border-radius:8px;background:#f5fbf1ed;color:#3b695b;font-size:12px}.glass-quick span{margin-right:9px}.glass-quick button{padding:5px 10px;border:1px solid #bed8ce;border-radius:5px}.glass-quick button.active{background:#286e62;color:#fff}.flood-status{z-index:5}
:root{--bg:#f5f6f2;--paper:#fff;--ink:#243c37;--muted:#77877f;--line:#e3e9e2;--green:#216b5d;--mint:#e9f2e9;--orange:#c4894a;--shadow:0 4px 18px #193b2e04;font-family:Inter,"Pretendard","Segoe UI","Malgun Gothic",sans-serif;color:var(--ink);font-synthesis:none}
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0;font-size:25px}#dialog-body{font-size:13px;line-height:1.9;color:#6e8265}#dialog-body p{font-size:13px;line-height:1.9}#dialog-body ul{padding-left:20px}#dialog-body li{margin:8px 0}#dialog-body .spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}#dialog-body .spec-grid>div{padding:12px;background:#f5f8ee;border-radius:6px;font-size:10px;color:#8b9e76}#dialog-body .spec-grid b{display:block;font-size:15px;color:#4e7540;font-weight:500}dialog .primary{margin-top:17px}.tooltip{position:fixed;background:#254a40;color:#f0f5e9;max-width:300px;padding:12px 15px;border-radius:8px;box-shadow:0 4px 18px #18382d25;font-size:12px;line-height:1.8;z-index:100;pointer-events:none}.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#244e3f;color:#eff7e4;border:1px solid #436348;padding:13px 22px;border-radius:10px;box-shadow:0 6px 30px #23473433;font-size:12px;z-index:101;max-width:90vw;text-align:center}.noscript{position:fixed;inset:30% 20%;background:#fff;padding:40px;color:#31543b;z-index:100}.completed .mission-text small:after{content:" · 완료";color:#44874e}
@media(min-width:1550px){.world-frame{height:530px}.control-group{margin-top:29px}.controls{padding:25px}}
@media(max-width:1200px){.header{padding:0 25px}.page{padding:28px 25px 20px}.sim-layout{grid-template-columns:263px minmax(0,1fr);gap:15px}.controls{padding:20px 16px}.world-frame{height:482px}.compass{top:60px;width:200px}.view-tools{top:100px}.challenge-hud{top:100px;width:265px}.mission-card{padding:16px 13px;gap:10px}.mission-icon{width:35px;height:40px}.mission-text strong{font-size:12px}.mission-text>span{font-size:9px}.telemetry>div{padding:0 15px}.telemetry>div>span{font-size:9px}.telemetry strong{font-size:24px}.site-footer{padding:18px 25px 26px}.keyboard-hint{font-size:9px;gap:11px}.header nav{gap:12px}.nav-button{font-size:13px}}
@media(max-width:960px){.brand small{display:none}.header{height:72px}.header nav{gap:3px}.nav-button{font-size:12px;padding:2px 8px 0}.help-button span{display:none}.page-heading h1{font-size:25px}.session-tag{display:none}.world-frame{height:490px}.sim-layout{grid-template-columns:238px minmax(0,1fr)}.vessel-thumbnail{width:68px}.vessel-card small{font-size:9px}.vessel-card strong{font-size:12px}.control-title label{font-size:11px}.control-title output{font-size:18px}.map-card{width:150px}.map-card canvas{height:95px}.heel-instrument{left:7px;width:125px}.heel-instrument>svg{width:125px;height:66px}.world-bottom small{display:none}.telemetry{grid-template-columns:repeat(2,1fr);row-gap:13px;padding:14px 0}.telemetry>div:nth-child(2){border:0}.telemetry>div>span{font-size:10px}.telemetry strong{font-size:22px;margin-top:3px}.time-label{display:none}.playback-left{gap:9px}.mission-grid{grid-template-columns:1fr}.mission-card{padding:15px 20px}.mission-text strong{font-size:14px}.mission-text>span{font-size:11px}.mission-text small{font-size:9px}.keyboard-hint{justify-content:center}.science-strip{flex-wrap:wrap}.science-strip .text-button{margin-left:25px}.learn-layout{grid-template-columns:1fr}.concept-grid{grid-template-columns:1fr 1fr}.rot-lab{flex-wrap:wrap}.rot-lab>div{width:100%}.site-footer>span:last-child{display:none}.challenge-hud{top:143px;width:250px}.world-top{left:14px;right:12px}.view-tools{left:14px}.world-label small{font-size:8px}}
@media(max-width:680px){.header{padding:0 16px;height:auto;min-height:74px;flex-wrap:wrap;gap:8px}.brand{font-size:20px;padding:14px 0}.brand-mark{width:36px;height:36px;border-radius:9px}.brand-mark svg{width:25px;height:25px}.header nav{order:3;width:100%;justify-content:center;height:42px;gap:18px}.nav-button{font-size:12px;flex:1;justify-content:center;gap:6px;padding:0 2px}.nav-button svg{width:15px}.page{padding:25px 16px 15px}.eyebrow{font-size:8px;letter-spacing:1.8px}h1{font-size:23px!important;letter-spacing:-1px}.page-heading{margin-bottom:20px;align-items:flex-start;flex-wrap:wrap}.page-heading p{font-size:11px}.sim-layout{display:flex;flex-direction:column}.simulation-column{order:0}.controls{order:1;padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.controls>.section-label:first-child{grid-column:1/-1}.vessel-picker{grid-column:1/-1;flex-direction:row}.vessel-card{width:50%;gap:5px;padding:5px;min-height:63px}.vessel-thumbnail{width:60px}.vessel-card strong{font-size:11px}.vessel-card small{font-size:8px}.selection-dot{width:10px;height:10px;margin-right:2px}.control-heading{grid-column:1/-1;margin-top:18px;padding-top:16px}.control-group{margin-top:20px}.control-group:nth-of-type(5){grid-column:1/-1}.control-note{grid-column:1/-1;margin:18px 0 13px;font-size:10px}.controls>.secondary{grid-column:1/-1}.control-title label{font-size:11px}.control-title output{font-size:18px}.world-frame{height:460px;min-height:0}.world-label{font-size:11px}.world-label small{font-size:8px}.quality-wrap select{font-size:9px;width:110px}.compass{top:61px;width:205px}.view-tools{top:96px}.heel-instrument{bottom:51px;left:10px}.map-card{width:145px;right:12px;bottom:47px;padding:8px}.world-bottom{font-size:8px;left:14px;right:12px}.world-bottom label{font-size:8px}.world-bottom select{font-size:8px}.telemetry{grid-template-columns:repeat(4,1fr);gap:0}.telemetry>div{padding:0 9px}.telemetry>div>span{font-size:8px;gap:3px}.telemetry .tip{display:none}.telemetry strong{font-size:20px}.telemetry strong small{font-size:9px;margin-left:1px}.telemetry>div:nth-child(2){border-right:1px solid var(--line)}.keyboard-hint{display:none}.missions{margin-top:26px}.mission-heading h2{font-size:18px}.mission-heading>span{font-size:9px}.mission-grid{gap:10px}.science-strip{font-size:10px;line-height:1.8}.science-strip>span{flex:1}.site-footer{padding:17px;font-size:8px}.learn-layout{gap:16px}.formula-lab{padding:21px}.lab-controls{gap:12px}.concept-card{padding:21px;gap:10px}.concept-number{font-size:9px}.concept-grid{grid-template-columns:1fr;gap:14px}.rot-lab{padding:21px;gap:12px}.rot-lab input{width:95px}.rot-lab strong{font-size:23px;min-width:95px}.sources{padding:21px}.sources a{display:block;margin-top:12px}.force-diagram{gap:8px}.force-diagram svg{width:130px;height:100px}.force-diagram span{font-size:8px}.playback-left{gap:9px}.time-buttons{padding-left:7px;margin-left:0}.time-buttons button{padding:3px 7px}.playback-bar>.text-button{font-size:10px}.challenge-hud{top:136px;width:260px}.mission-text strong{font-size:13px}.mission-text>span{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(min-width:961px) and (max-height:850px){.header{height:72px}.page{padding-top:22px}.page-heading{margin-bottom:20px}h1{font-size:25px}.controls{padding:18px}.vessel-card{min-height:58px;padding-top:5px;padding-bottom:5px}.vessel-picker{margin-top:12px;gap:7px}.vessel-thumbnail{height:40px}.control-heading{margin-top:18px;padding-top:16px}.control-group{margin-top:18px}.control-title{margin-bottom:8px}input[type=range]{margin-top:13px;margin-bottom:9px}.control-note{margin:16px 0 12px}.world-frame{height:422px;min-height:400px;flex:1}.telemetry{padding:15px 0}.telemetry strong{font-size:24px;margin-top:5px}.keyboard-hint{padding-top:12px}.missions{margin-top:20px}}
/* Classroom route, environment and open-tank experiments. */
.header nav{gap:12px}.vessel-card{min-height:58px}.vessel-thumbnail{width:76px}.simulation-column{min-width:0}.sim-layout{align-items:stretch}.world-frame{min-height:490px}.world-label small{font-size:11px}.view-tools button{font-size:11px}.world-bottom{font-size:11px}.world-bottom small{font-size:10px}.quality-wrap select{font-size:11px}.conditions-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:22px;margin-top:24px}.conditions-panel{padding:23px}.condition-fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:18px}.condition-fields label,.route-inputs label,.turn-select{font-size:12px;color:#526e61}.condition-fields input,.condition-fields select,.route-inputs input,.turn-select select{width:100%;display:block;padding:9px 8px;border:1px solid #cdded6;border-radius:6px;background:#f9fcf8;color:#274d42;font-size:14px;margin-top:6px}.condition-fields input:invalid,.route-inputs input:invalid{border-color:#bf7152}.flood-meter{display:flex;align-items:center;gap:15px;margin:14px 0}.flood-meter strong{font-size:26px;color:#287788;min-width:65px}.flood-meter progress{width:100%;height:12px;accent-color:#429bad}.flood-meter>span{white-space:nowrap;font-size:12px}.pump-buttons{display:flex;gap:8px}.pump-buttons button{flex:1}.pump-buttons .active{background:#216b5d;color:white;border-color:#216b5d}.flood-readings{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0;color:#6d8275;font-size:11px}.flood-readings b{display:block;font-size:17px;color:#315a49;font-variant-numeric:tabular-nums}.flood-options{display:flex;gap:20px;flex-wrap:wrap;font-size:12px}.flood-options input{accent-color:#216b5d}.invalid{color:#aa513d!important}.bridge-strip{display:flex;justify-content:space-between;align-items:center;background:#eaf0e7;padding:9px 16px;border-radius:0 0 8px 8px}.bridge-strip>div{display:flex;flex-wrap:wrap;gap:10px 20px;color:#6b806f;font-size:11px}.bridge-strip b{color:#355746;font-weight:600;margin-left:5px}.route-layout{display:grid;grid-template-columns:minmax(0,1fr) 335px;gap:22px}.route-map-panel{padding:18px;min-width:0}.route-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.route-toolbar button{font-size:12px}.route-map-panel canvas{display:block;width:100%;height:auto;border-radius:8px;touch-action:none}.route-map-panel p,.chart-legend{font-size:12px;margin:12px 0 0}.chart-legend{display:flex;flex-wrap:wrap;gap:4px 16px;color:#658678}.route-settings{padding:23px}.route-settings h2{margin:6px 0 20px;font-size:22px}.route-inputs{display:grid;grid-template-columns:1fr 1fr;gap:14px}.turn-select{display:block;margin:18px 0}.calculation-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;font-size:11px;color:#758879}.calculation-grid strong{display:block;color:#305e50;font-size:19px;font-weight:500;margin-top:4px}.calculation-grid small{font-size:11px}.route-actions{display:flex;flex-direction:column;gap:8px;margin-top:22px}.route-live{display:flex;justify-content:space-around;gap:20px;flex-wrap:wrap;padding:20px;margin:22px 0;color:#64796b;font-size:12px}.route-live strong{display:block;font-size:19px;color:#2c6556;margin-top:3px}.bridge-lessons{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.bridge-lessons article{padding:23px}.bridge-lessons h3{font-size:16px;margin:12px 0}.bridge-lessons p{font-size:13px;line-height:1.9;color:#60796e}.route-hud{position:absolute;top:88px;left:50%;transform:translateX(-50%);width:min(390px,calc(100% - 32px));padding:12px 15px;background:#f2f9f0ed;border:1px solid #b8d3c4;border-radius:9px;box-shadow:0 3px 15px #1c41482b;font-size:11px}.route-hud>strong{display:block;font-size:13px;color:#255b48}.route-hud>span{display:block;margin:3px 0;color:#638c77}.route-hud>div{display:flex;justify-content:space-between;gap:12px}.route-hud b{color:#36694f}.route-hud button{font-size:11px;margin:5px 10px 0 0}.flood-status{position:absolute;left:50%;top:130px;transform:translateX(-50%);padding:12px 18px;background:#764739e8;color:#fff3df;border-radius:8px;font-size:13px;max-width:90%;width:max-content}.subtle{font-size:12px!important;color:#748570!important}.route-settings .subtle{margin-bottom:0}.conditions-panel .section-label{font-size:12px}.conditions-panel .section-label b{font-size:14px}
@media(max-width:1200px){.condition-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.bridge-lessons{grid-template-columns:1fr 1fr}.route-layout{grid-template-columns:minmax(0,1fr) 300px}.route-hud{top:143px;width:350px}.world-frame{min-height:530px}.compass{top:62px}.view-tools{top:103px}.flood-readings{grid-template-columns:1fr 1fr}}
@media(max-width:960px){.conditions-grid,.route-layout{grid-template-columns:1fr}.route-inputs{grid-template-columns:repeat(4,minmax(0,1fr))}.route-actions{flex-direction:row;flex-wrap:wrap}.route-hud{top:140px;width:calc(100% - 24px)}.route-hud>strong{font-size:12px}.brand{font-size:18px}.header{gap:10px}.header nav{gap:0}.nav-button{padding-left:6px;padding-right:6px}.world-frame{min-height:570px}.bridge-strip{padding:9px 12px}.bridge-strip>div{gap:7px 10px}.condition-fields{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:680px){.header nav{gap:0}.nav-button{font-size:11px;gap:3px}.nav-button svg{width:13px}.vessel-picker{flex-wrap:wrap}.vessel-card{width:100%;flex:1 1 100%;padding:6px 10px}.vessel-thumbnail{width:78px;height:42px}.vessel-card strong{font-size:13px}.vessel-card small{font-size:11px}.selection-dot{margin-left:auto}.world-frame{min-height:520px}.world-label small{font-size:9px}.quality-wrap select{font-size:10px}.route-hud{top:137px}.world-bottom{font-size:9px}.world-bottom label{font-size:9px}.world-bottom select{font-size:10px}.condition-fields,.route-inputs{grid-template-columns:repeat(2,minmax(0,1fr))}.conditions-panel,.route-settings{padding:18px}.bridge-lessons{grid-template-columns:1fr}.route-map-panel{padding:10px}.route-toolbar{gap:5px}.route-toolbar button{font-size:11px;padding:8px}.chart-legend{font-size:11px}.calculation-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.route-live{justify-content:flex-start}.route-live>div{width:100%}.flood-status{top:137px}.bridge-strip>div{font-size:10px}.world-bottom small{display:none}.route-hud>div{font-size:10px}.conditions-grid{gap:16px}}