:root{font-family:Inter,"Pretendard","Malgun Gothic",sans-serif;color:#172c3b;background:#f3f6f8;font-size:16px;line-height:1.65;--green:#007c68;--navy:#102938;--line:#d8e2e7}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,.button{border:1px solid #bdcdd4;background:white;border-radius:8px;padding:9px 14px;cursor:pointer;color:#1f3c4a;font-size:.875rem;font-weight:650;display:inline-block;text-decoration:none}button:hover,.button:hover{border-color:var(--green);background:#edf9f5}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #e79a21;outline-offset:3px}.primary{background:var(--green);color:white;border-color:var(--green)}.primary:hover{background:#006958;color:white}.wide{width:100%;margin-top:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}header{padding:18px max(24px,calc((100vw - 1440px)/2));border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;align-items:center;background:white}.brand{font-size:1.4rem;font-weight:850;text-decoration:none;color:var(--navy)}.brand small{font-size:.75rem;letter-spacing:.12em;margin-left:12px;font-weight:600}.logo{color:var(--green);margin-right:8px}header>div{display:flex;align-items:center;gap:16px}.local{font-size:.8rem;color:#49616e}main{max-width:1440px;margin:auto;padding:30px 24px 0}.heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:26px}.eyebrow{font-size:.75rem;font-weight:800;letter-spacing:.1em;color:var(--green);margin:0 0 7px}h1{font-size:2.05rem;line-height:1.3;margin:0 0 9px;letter-spacing:-.055em}h2{font-size:1.3rem;line-height:1.4;margin:0 0 10px;letter-spacing:-.025em}h3{font-size:1rem;margin:0}p{margin:0 0 10px}.heading p:last-child{color:#546b79;font-size:.95rem}.text-link{color:var(--green);font-size:.9rem;font-weight:bold;white-space:nowrap}#steps{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:18px}#steps button{text-align:left;font-size:.85rem;padding:12px 10px;border:0;background:#e5edf0;color:#516974;border-radius:7px}#steps button span{display:block;font-size:.75rem;opacity:.8}#steps button[aria-current="step"]{background:var(--navy);color:#75f2cd}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;align-items:start}.viewer{background:var(--navy);color:#d2e5ee;border-radius:14px;overflow:hidden;position:sticky;top:16px}.viewer-top{display:flex;justify-content:space-between;font-size:.8rem;padding:14px 20px;gap:12px}#source{color:#82f2d1}.canvas-wrap{position:relative;background:#071b28;display:flex;align-items:center;min-height:300px}#view{display:block;width:100%;height:auto;touch-action:none;max-height:580px;object-fit:contain}.legend{display:flex;gap:15px;flex-wrap:wrap;padding:10px 18px;font-size:.75rem;color:#a9c1cd}.legend span:first-child{color:#6ee7b7}.legend span:nth-child(2){color:#ffce70}.legend span:nth-child(3){color:#dda9fc}.inputs{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px 0}.inputs button,.inputs .button,.playback button{background:#203d4f;color:#effaff;border-color:#476374}.inputs button:hover,.playback button:hover{background:#325567}#upload{position:absolute;width:1px;height:1px;opacity:0}#upload:focus-visible+.button{outline:3px solid orange}#status{padding:12px 20px 4px;font-size:.85rem;color:#bad3df;min-height:50px}.playback{padding:14px 18px 18px;border-top:1px solid #304c5c;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.playback label{font-size:.8rem;margin-left:auto}.playback select{background:#203d4f;color:white;border:1px solid #476374;border-radius:6px;font-size:.8rem;padding:6px}.playback .primary{background:#007c68}#cameraPanel{position:absolute;inset:0;background:#071b28;z-index:3}#cameraPanel[hidden]{display:none}video{width:100%;height:calc(100% - 58px);object-fit:contain}#cameraPanel>div{text-align:center}.controls{background:white;border:1px solid var(--line);border-radius:14px;overflow:hidden}.step-copy{padding:22px;border-bottom:1px solid var(--line)}.step-copy p:last-of-type{font-size:.9rem;color:#546b79;min-height:70px}.threshold{padding:22px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:16px}.section-title>span{font-size:.7rem;letter-spacing:.07em;color:#546b79}.value-line{display:flex;justify-content:space-between;align-items:center;margin:10px 0}.value-line output{font-size:2.5rem;font-weight:800;color:var(--green);font-variant-numeric:tabular-nums}.value-line label{font-size:.8rem;display:flex;flex-direction:column;align-items:end}.value-line input{width:85px;border:1px solid var(--line);padding:4px 8px;border-radius:6px}input[type=range]{width:100%;accent-color:var(--green);cursor:pointer;min-height:24px}.range-label{display:flex;justify-content:space-between;font-size:.75rem;color:#546b79}.presets{display:flex;gap:8px;margin:12px 0}.presets button{flex:1;padding:5px}.rule{background:#edf9f5;padding:8px;text-align:center;font-size:.85rem;border-radius:6px;color:#006c58}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:16px 0;gap:4px}.stats strong{display:block;font-size:1.5rem}.stats span{font-size:.7rem;color:#546b79}.hint{font-size:.8rem;color:#546b79;line-height:1.75}.controls>details{padding:16px 22px;border-top:1px solid var(--line)}summary{cursor:pointer;font-weight:700;font-size:.9rem;margin-bottom:10px}details label{font-size:.8rem}details output{font-weight:bold;color:var(--green);float:right}.row{display:flex;gap:16px}.row>label{flex:1;min-width:0}select{max-width:100%;padding:6px;border:1px solid var(--line);border-radius:6px}#addBox,#resetBoxes{font-size:.8rem;padding:6px;margin:5px 0}.coords{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.coords input{width:100%;border:1px solid var(--line)}.analysis{margin-top:26px;background:white;border:1px solid var(--line);border-radius:14px;padding:24px;display:grid;grid-template-columns:280px minmax(0,1fr);gap:30px}.analysis p{font-size:.85rem}.table-wrap{max-height:320px;overflow:auto}table{border-collapse:collapse;width:100%;font-size:.8rem;text-align:left}th{position:sticky;top:0;background:#f0f5f7;z-index:1}td,th{padding:10px 12px;border-bottom:1px solid #e2e9ed}td button{font-size:.75rem;padding:3px 8px}.scorebar{height:4px;background:#dcebe7;display:block;min-width:100px}.scorebar i{height:4px;display:block;background:#00816d}.timings{font-size:.75rem;color:#546b79;font-variant-numeric:tabular-nums}.experiment{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;padding:32px 0}.experiment p{font-size:.9rem}#prediction{display:flex;gap:8px;flex-wrap:wrap}.concept-note{border-left:3px solid #0a9477;padding-left:24px}.concept-note h3{margin-bottom:10px}#predictionFeedback{color:#006c58;margin-top:12px}#quiz{padding:28px 0;border-top:1px solid var(--line);scroll-margin-top:20px}#quizProgress{font-size:.9rem}.quiz-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px}.question{padding:22px;background:white;border:1px solid var(--line);border-radius:10px}.question h3{margin-bottom:14px}.question label{display:block;font-size:.9rem;margin-bottom:8px;cursor:pointer}.question input{accent-color:var(--green);margin-right:8px}.question p{font-size:.85rem;margin:12px 0 0}.question .feedback{padding:10px;background:#edf9f5;border-radius:6px}footer{padding:24px 0;border-top:1px solid var(--line);font-size:.8rem;color:#546b79}footer a{color:var(--green)}.large{font-size:19px}@media(max-width:1050px){.workspace{grid-template-columns:minmax(0,1fr) 310px}.analysis{grid-template-columns:1fr}.viewer{top:8px}#steps button{font-size:.75rem;padding:8px}.brand small{display:none}}@media(max-width:760px){main{padding:22px 14px 0}header{padding:12px 14px}.local{display:none}.heading{display:block}.heading .text-link{display:inline-block;margin-top:8px}h1{font-size:1.7rem}#steps{display:flex;overflow-x:auto;padding-bottom:5px}#steps button{min-width:95px;flex:1}.workspace{grid-template-columns:1fr}.viewer{position:static}.controls{display:block}.canvas-wrap{min-height:210px}.analysis{padding:18px;gap:16px}.experiment,.quiz-grid{grid-template-columns:1fr}.experiment{gap:24px}.playback label{margin-left:0}.table-wrap{max-width:100%}.brand{font-size:1.2rem}.heading p:last-child{font-size:.875rem}.section-title{align-items:flex-start}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.mission{padding:16px 20px;border-top:1px solid #304c5c;font-size:.9rem}.mission p{margin-bottom:9px}.mission b{display:inline-block;color:#79edcf;margin-right:8px}.slow-panel{padding:16px 20px;background:#1b3a4c}.slow-panel p{font-size:.9rem;margin:10px 0}.slow-panel button{margin:4px}.slow-panel[hidden]{display:none}

header .brand{min-width:0;overflow-wrap:anywhere}header .brand small{display:block;margin:4px 0 0;font-size:.875rem;letter-spacing:0;line-height:1.5}header>div{flex-shrink:0}.discussion textarea{display:block;width:100%;max-width:100%;font:inherit;resize:vertical;min-height:140px;padding:12px;border:1px solid var(--line);border-radius:8px;margin-bottom:16px}.discussion textarea:focus-visible{outline:3px solid #e79a21;outline-offset:3px}@media(max-width:760px){header{flex-wrap:wrap}header .brand{width:100%}header .brand small{display:block;font-size:.8rem}}
/* 모바일에서도 탐지 실행 버튼에 바로 접근하고 하단 콘텐츠를 가리지 않도록 확보합니다. */
@media (max-width:760px) {
  body { padding-bottom:calc(88px + env(safe-area-inset-bottom, 0px)); }
  #detect {
    position:fixed;
    left:14px;
    right:14px;
    bottom:calc(12px + env(safe-area-inset-bottom, 0px));
    width:auto;
    min-height:52px;
    margin:0;
    z-index:20;
    font-size:16px;
    box-shadow:0 4px 24px #10293855;
  }
  body:has(#cameraPanel:not([hidden])) #detect { display:none; }
  .inputs button, .playback button, #cameraPanel button { min-height:44px; }
  input[type="number"], select, .discussion textarea { font-size:16px; }
}