@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700&display=swap');
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* v2: tissue-plane separation is the focus; no change in nerve geometry. */
#adhesion-bridges,#constraint-arrows,#gap-bracket{pointer-events:none}.tissue-dot{background:#adb68e}

/* v3: warm gallery frame, muted charcoal-green canvas, champagne details. */
:root{--paper:#f8f6f1;--ink:#303c37;--muted:#6d756e;--line:#e3dfd5;--green:#3b554a;--gold:#998563}
body{background:var(--paper)}
.shell{max-width:1200px}
.brand{letter-spacing:-.045em}
.review{color:#756d5e;background:#ffffff70;border-color:#ded8cb}
h1{letter-spacing:-.055em}h1 em{color:#7a8276}
.steps{background:rgba(248,246,241,.96);border-color:#e3dfd5}
.number{color:#b3a07c}.text-link{border-color:#b4aa94}
.hand-card{background:radial-gradient(ellipse at 55% 42%,#fffefb,#efeee7);border-color:#e5e0d6;box-shadow:0 16px 36px -28px #4d493b40}
.pattern{background:#fffefa;border-color:#e2ddd3;border-radius:13px}
.pattern.active{background:#f0f1e9;border-color:#a4af9e;box-shadow:inset 3px 0 #7a8d78}
.evaluation-grid article{background:#fffefa;border-color:#e5dfd4;border-radius:16px}
.evaluation-grid .gentle-note{background:#f0ece2;border-color:#e3dacb}
.segment{background:#ece9e1;border-color:#e2dccc;padding:4px}
.segment button{color:#72776d}
.segment button[aria-pressed=true]{background:#fffefa;color:#35483c;box-shadow:0 2px 8px #4039240c}
.treatment-stage{background:#fffefa;color:var(--ink);border:1px solid #ded7c8;border-radius:23px;box-shadow:0 18px 55px -32px #40392b50,0 1px 2px #40392b05;padding:0 15px}
.stage-top{padding:23px 12px 19px;color:#6c6a5d;font-size:10px;letter-spacing:.13em}
#stage-site{display:flex;align-items:center;gap:12px}
#stage-site::before{content:'';display:block;width:20px;height:1px;background:#ad9870}
.stage-top .controls{gap:12px}
.stage-top .primary{background:#374b40;color:#fffdf5;border:1px solid #374b40;padding:10px 20px;min-height:42px;box-shadow:0 3px 9px #29392d0c}
.stage-top .primary:hover{background:#455e4f}
.stage-top .reset{color:#7a776c}
.treatment-stage svg{height:435px;background:radial-gradient(ellipse at 50% 42%,#303e38 0%,#242e2a 52%,#1c2421 100%);border:1px solid #354239;border-radius:13px;box-shadow:inset 0 0 50px #111a171f}
.anatomy-label{fill:#bbc3b7}.nerve-label{fill:#f0e2c4}.fluid-label{fill:#d0e8df}.bottom-label{fill:#a4b0a5}
.leader{stroke:#ccd5cb;stroke-opacity:.62}
#fascia-top{stroke:#e1d4b6;stroke-opacity:.7}
#fascia-bottom{stroke:#d4cbb7;stroke-opacity:.65}
#tissue-fibers{stroke:#ede3cf;stroke-opacity:.20}
#adhesion-bridges{stroke:#cec8b2}
#gap-bracket{stroke:#cbe7de}
.stage-bottom{padding:18px 13px 20px;border:0;color:#6b7268;letter-spacing:.09em}
.legend{gap:24px;font-size:11px}
.legend i{box-shadow:0 0 0 3px #e8e3d750;width:6px;height:6px}
.nerve-dot{background:#b39a6c}.fluid-dot{background:#619f94}.tissue-dot{background:#a49c88}
.playback{padding-top:31px}.timeline{border-color:#e2dcd0}
.timeline button{color:#75796f}
.timeline button[aria-pressed=true]{background:#f0eee6;color:#3e5346;border-bottom-color:#9d8c68}
.timeline button span{color:#a3906c}
.care-note{background:#f0ede4;border-left-color:#b1a17b;border-radius:0 12px 12px 0}
.references a{color:#526252}
@media(max-width:760px){
 .treatment-stage{padding:0 9px;border-radius:18px}
 .stage-top{padding:17px 6px 15px;gap:13px;letter-spacing:.1em}
 #stage-site{font-size:9px;gap:9px}
 #stage-site::before{width:15px}
 .stage-top .controls{gap:8px}
 .stage-top .primary{padding:10px 14px;font-size:11px}
 .stage-top .reset{padding:8px 10px}
 .treatment-stage svg{height:240px;border-radius:10px}
 .anatomy-label{font-size:20px}.nerve-label{font-size:24px}.fluid-label{font-size:18px}
 .stage-bottom{padding:16px 5px;font-size:9px}
 .legend{gap:12px;font-size:10px}
 .legend span{gap:6px}
 .legend i{width:5px;height:5px;box-shadow:none}
}

/* v4: locate the treatment in the body, then magnify living tissue. */
:root{--paper:#fbf8f4;--ink:#4b403b;--muted:#7b706a;--line:#e5dcd3;--green:#8b6756;--gold:#a48462}
.steps{background:rgba(251,248,244,.96)}h1 em{color:#9b8272}
.review{background:#fffaf6;color:#937763;border-color:#dfd0c1}
.hand-card{background:radial-gradient(ellipse at 55% 42%,#fffdfa,#f2e7dc)}
.pattern.active{background:#f6ece3;border-color:#c6a991;box-shadow:inset 3px 0 #b58b70}
.pattern .arrow{color:#a38b74}.practical{border-color:#c7a58b}.practical b{color:#9b765e}
.segment{background:#eee6df;border-color:#e4d7cc}
.segment button{color:#8c7d70}.segment button[aria-pressed=true]{color:#7a5541;background:#fffdf9}
.treatment-stage{background:#fffdfa;border-color:#e1d3c5;padding:0 18px;box-shadow:0 20px 55px -35px #7f5a3e50}
.stage-top{color:#9b7960;padding:23px 9px 20px}
.stage-top .primary{background:#8c6957;border-color:#8c6957;color:#fffdf8}.stage-top .primary:hover{background:#765443}
.stage-top .reset{color:#8b7767}
.body-anatomy-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;align-items:stretch}
.body-overview{position:relative;background:linear-gradient(145deg,#f7eee5,#fcf9f4);border:1px solid #eaded2;border-radius:14px;padding:18px 17px 15px;display:flex;flex-direction:column;align-items:center}
.body-overview-heading{width:100%}.body-eyebrow{font-size:10px;color:#a1836a;letter-spacing:.1em}.body-overview h3{font-size:18px;color:#785c4b;margin:3px 0 0}
.body-map{position:relative;width:175px;aspect-ratio:2/3;margin:7px auto 3px}
.body-map img{display:block;width:100%;height:100%;object-fit:contain;filter:drop-shadow(5px 11px 12px #97663b12)}
.body-marker{position:absolute;width:38px;height:30px;border:1px solid #a8744a;border-radius:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 7px #c59b6a12;background:#edc8891c;transition:top .4s ease,left .4s ease}
.body-marker.wrist{top:36%;left:50%}.body-marker.elbow{top:80%;left:65%}
.body-marker i{position:absolute;inset:5px;border:1px solid #c2976c88;border-radius:50%}
.body-overview>p{font-size:11px;line-height:1.8;color:#9b7d68;margin:4px 0 0}
.zoom-bridge{position:absolute;right:-39px;top:49%;z-index:1;display:flex;align-items:center;gap:3px;background:#fffdfa;font-size:9px;color:#b08a66;padding:3px 0}.zoom-bridge>span{font-size:19px;font-weight:400}
.anatomy-cutaway{min-width:0;display:flex;flex-direction:column;border:1px solid #e7d4c6;border-radius:14px;overflow:hidden;background:#f9eee6}
.cutaway-title{padding:16px 20px;display:flex;justify-content:space-between;align-items:center;font-size:11px;color:#926d57;border-bottom:1px solid #e6d2c21a;background:#fcf6ef}
.cutaway-title span:last-child{font-size:9px;color:#af927c}
.treatment-stage svg#anatomy{height:auto;min-height:320px;flex:1;width:100%;background:radial-gradient(ellipse at 52% 48%,#fcf4ee,#f5e4d9);border:0;border-radius:0;box-shadow:none}
.anatomy-label{fill:#8d6c58;font-size:13px}.nerve-label{fill:#886126;font-size:16px}.fluid-label{fill:#3c7b91;font-size:13px}.bottom-label{fill:#9b8171;font-size:11px}
.leader{stroke:#a0806a;stroke-opacity:.62}
#fascia-top{stroke:#bb8d7c;stroke-opacity:.8}#fascia-bottom{stroke:#b78b7c;stroke-opacity:.8}
#tissue-fibers{stroke:#fff2e9;stroke-opacity:.58}#adhesion-bridges{stroke:#a67e6c}
#gap-bracket{stroke:#3e8198}#fluid-highlight-upper,#fluid-highlight-lower{stroke:#78b9d0;stroke-opacity:.75}
#constraint-arrows{stroke:#a96c55}
#wrist-context>path:nth-of-type(2){stroke:#d4bda8;stroke-opacity:.8}
#wrist-context>path:nth-of-type(3),#elbow-context>path:nth-of-type(3){stroke:#bc8b7d;stroke-opacity:.7}
#wrist-context>path:nth-of-type(4){stroke:#f2d9ca;stroke-opacity:.9}
#elbow-context>path:nth-of-type(1),#elbow-context>path:nth-of-type(2){stroke:#c6ad90;stroke-opacity:.8;stroke-width:1.5}
.stage-bottom{color:#8b7564;padding:18px 10px}.nerve-dot{background:#d3a64e}.fluid-dot{background:#72afc1}.tissue-dot{background:#c29b90}
.timeline button[aria-pressed=true]{background:#f4ece3;color:#896348;border-bottom-color:#b68b65}
.care-note{background:#f5eee5;border-left-color:#c2a17b}.references a{color:#936f53}
@media(max-width:760px){
 .treatment-stage{padding:0 10px}.stage-top{padding:17px 6px 15px}
 .body-anatomy-layout{grid-template-columns:1fr;gap:12px}
 .body-overview{min-height:174px;padding:17px 15px 17px 120px;align-items:flex-start;justify-content:center;border-radius:11px}
 .body-overview-heading{width:auto}.body-overview h3{font-size:17px}.body-eyebrow{font-size:9px}
 .body-map{position:absolute;left:12px;top:9px;width:100px;height:153px;margin:0}
 .body-overview>p{font-size:10px;margin-top:7px}.zoom-bridge{right:17px;top:auto;bottom:-12px;transform:rotate(90deg);background:#fffdfa}.zoom-bridge{font-size:0}.zoom-bridge>span{font-size:20px}
 .body-marker{width:24px;height:19px;box-shadow:0 0 0 4px #c59b6a12}.body-marker i{inset:3px}
 .cutaway-title{font-size:10px;padding:13px 12px}.cutaway-title span:last-child{font-size:9px}
 .treatment-stage svg#anatomy{min-height:0;height:240px;flex:none}
 .anatomy-label{font-size:20px}.nerve-label{font-size:24px}.fluid-label{font-size:18px}.bottom-label{display:none}
 .stage-bottom{padding:16px 5px}.legend{gap:12px;font-size:10px}
}