:root{--lava:#ff5a36;--lava-deep:#d63a17;--magma:#ffb347;--rock:#2b2420;--ash:#6b5d52;--cream:#fdf6ec;--paper:#fffdf8;--leaf:#3d9970;--leaf-deep:#2c7a54;--shadow:0 8px 24px #2b24201f;--radius:22px;--side-w:400px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--cream);color:var(--rock);background-image:radial-gradient(circle at 15% 20%,#ffb3471f 0,#0000 30%),radial-gradient(circle at 85% 70%,#ff5a3614 0,#0000 35%);min-height:100vh;font-family:Gowun Dodum,sans-serif}body.exploring{overflow:hidden}h1,h2,h3{font-family:Jua,sans-serif;font-weight:400}.wrap{max-width:560px;margin:0 auto;padding:20px 16px 60px}.intro{text-align:center;animation:.6s both fadeUp}.sk-screen .wrap{width:100%;padding:0 0 24px}.intro .volcano-art{font-size:84px;line-height:1;animation:2.4s ease-in-out infinite bounce}.intro h1{color:var(--lava-deep);margin:14px 0 6px;font-size:34px}.intro .sub{color:var(--ash);margin-bottom:22px;font-size:16px;line-height:1.7}.lesson-tag{background:var(--rock);color:var(--magma);border-radius:99px;margin-bottom:18px;padding:6px 16px;font-size:13px;display:inline-block}.mission-card{background:var(--paper);border:3px dashed var(--magma);border-radius:var(--radius);text-align:left;box-shadow:var(--shadow);margin:0 auto 26px;padding:20px 22px}.mission-card h3{color:var(--lava-deep);margin-bottom:10px;font-size:19px}.mission-card li{margin:8px 0 8px 20px;font-size:15px;line-height:1.6}.mission-card b{color:var(--lava-deep)}:root{--sk-accent:#c2410c;--sk-ring:#c2410c47}.sk-btn{font-family:Jua,sans-serif;font-weight:400}.explore{grid-template-columns:1fr var(--side-w);width:100vw;height:100dvh;animation:.4s both fadeUp;display:grid}.map-zone{background:#0c1420;min-width:0;position:relative}#map{width:100%;height:100%}.map-top{top:var(--sk-stage-top);z-index:5;pointer-events:none;flex-direction:column;align-items:flex-start;gap:6px;display:flex;position:absolute;left:14px;right:64px}.viewer-title{backdrop-filter:blur(6px);color:#fff;background:#140e0ab8;border:1px solid #ffffff40;border-radius:14px;align-items:center;gap:9px;max-width:100%;padding:9px 16px;font-family:Jua;font-size:19px;display:flex}.viewer-title .num{background:var(--lava);border-radius:50%;flex:none;justify-content:center;align-items:center;width:26px;height:26px;font-size:14px;display:inline-flex}.map-zone .maplibregl-ctrl-top-right{top:var(--sk-stage-top)}.cam-bar{z-index:5;gap:8px;width:max-content;max-width:calc(100% - 20px);display:flex;position:absolute;bottom:40px;left:50%;transform:translate(-50%)}.cam-bar .sk-btn{white-space:nowrap;background:#fffffff0;box-shadow:0 2px 10px #0000004d}.cam-bar 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.big-ic{font-size:40px;line-height:1}.map-notice-card p{margin:8px 0 14px;font-size:15px;line-height:1.7}.map-notice-btns{justify-content:center}.map-notice-btns>.sk-btn{flex:0 auto}.side{background:var(--paper);border-left:3px solid var(--rock);flex-direction:column;display:flex;overflow-y:auto;box-shadow:-8px 0 24px #2b242026}.side-head{color:#fff;background:linear-gradient(135deg,#5d4037 0%,#3e2723 100%);flex-shrink:0;padding:20px 22px 16px;position:relative;overflow:hidden}.side-head:after{content:"";background:radial-gradient(circle at 80% -20%,#ffb34759 0,#0000 55%);position:absolute;inset:0}.side-head .flag{opacity:.85;z-index:1;font-size:14px;position:relative}.side-head h2{z-index:1;margin:3px 0 2px;font-size:27px;position:relative}.side-head .height{opacity:.8;z-index:1;font-size:14px;position:relative}.side-body{flex:1;padding:18px 20px 26px}.progress-zone{margin-bottom:16px}.progress-track{background:#eadfce;border-radius:99px;height:12px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,var(--magma),var(--lava));border-radius:99px;min-width:12px;height:100%;transition:width .5s cubic-bezier(.6,0,.3,1.4)}.progress-label{color:var(--ash);justify-content:space-between;margin-top:5px;font-size:14px;display:flex}.observe-box{border:2px solid var(--magma);background:#fff7e8;border-radius:16px;margin-bottom:14px;padding:14px 16px}.observe-box h3{color:#b06a00;align-items:center;gap:6px;margin-bottom:6px;font-size:16px;display:flex}.observe-box p{font-size:15px;line-height:1.7}.tip-box{color:#2c5685;background:#eef4fb;border:2px solid #9cc0e8;border-radius:16px;margin-bottom:14px;padding:12px 15px;font-size:14.5px;line-height:1.65}.tip-box b{color:#1f4f8c}.earth-link{text-align:center;color:var(--ash);margin-top:10px;padding:10px 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2px;font-size:26px}.result .score{color:var(--ash);margin-bottom:16px;font-family:Jua;font-size:19px}.sort-cols{text-align:left;gap:10px;margin-bottom:14px;display:flex}.sort-col{border-radius:16px;flex:1;padding:12px}.sort-col.vol{background:linear-gradient(160deg,#fff0e8,#ffe2d2)}.sort-col.non{background:linear-gradient(160deg,#eaf6ef,#dcefe2)}.sort-col h3{text-align:center;margin-bottom:8px;font-size:14.5px}.sort-col.vol h3{color:var(--lava-deep)}.sort-col.non h3{color:var(--leaf-deep)}.sort-col ul{list-style:none}.sort-col li{margin-bottom:5px}.sort-col li button{text-align:left;width:100%;color:var(--rock);cursor:pointer;background:#ffffffc7;border:none;border-radius:9px;min-height:40px;padding:8px;font-family:inherit;font-size:14px;transition:transform .1s;display:block}.sort-col li button:hover{transform:translate(2px)}.revisit-hint{color:var(--ash);margin-bottom:14px;font-size:14px}.summary-box{background:var(--rock);color:#f5ead8;text-align:left;border-radius:18px;margin-bottom:18px;padding:16px 18px}.summary-box h3{color:var(--magma);margin-bottom:8px;font-size:16px}.summary-box p{font-size:14.5px;line-height:1.8}.summary-box b{color:#ffcf8a}@keyframes fadeUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}@keyframes popIn{0%{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeOutLater{0%,70%{opacity:1}to{opacity:0;visibility:hidden}}@media (prefers-reduced-motion:reduce){.intro,.explore,.reveal,.result{animation:none}.progress-fill{transition:none}}@media (width<=900px){body.exploring{overflow:auto}.explore{flex-direction:column;height:auto;min-height:100vh;display:flex}.map-zone{z-index:40;flex-shrink:0;height:48vh;min-height:300px;position:sticky;top:0}.side{border-left:none;border-top:3px solid var(--rock)}.quiz-btns{flex-direction:row}.quiz-btn{flex:1;font-size:15.5px}.intro h1{font-size:28px}.viewer-title{padding:8px 13px;font-size:16px}.map-top{left:10px}.cam-bar{flex-wrap:wrap;justify-content:center}}