:root{--ink:#17333c;--muted:#526970;--teal:#185763;--line:#d2dfe0;--paper:#fff;--space:8px;font:16px/1.7 "Yu Gothic",Meiryo,system-ui,sans-serif;color:var(--ink);background:#f0f4f3}
*{box-sizing:border-box}body{margin:0}button,select,a{-webkit-tap-highlight-color:transparent}button,select{font:inherit;color:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:6px;min-height:44px;padding:8px 16px;font-size:14px;font-weight:700}button:hover{background:#e9f1f1}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid #c1761a;outline-offset:3px}a{color:var(--teal)}[hidden]{display:none!important}.viewer{height:100vh;height:100dvh;min-height:420px;display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;background:#e2e7e6}.masthead{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 32px;background:#fbfdfc;border-bottom:1px solid var(--line);z-index:4}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--muted);font-weight:700}h1{font-size:24px;line-height:1.35;letter-spacing:.08em;margin:2px 0 0;font-weight:700}.model-tabs{display:flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:8px;background:#eef3f2;flex-shrink:0}.model-tabs a{display:flex;min-height:40px;align-items:center;text-decoration:none;padding:4px 24px;font-size:14px;font-weight:700;color:var(--muted);border-radius:4px}.model-tabs a[aria-current=page]{background:#fff;color:var(--teal);box-shadow:0 1px 4px #1c394017}.stage{position:relative;overflow:hidden;min-height:0;background:radial-gradient(ellipse at 45% 40%,#f3f5f4 0,#dce2e0 100%)}#canvas-host{position:absolute;inset:0;touch-action:none;outline-offset:-4px}canvas{width:100%;height:100%;display:block}.stage-tools{position:absolute;top:20px;left:24px;display:flex;gap:8px;z-index:2}.stage-tools button{background:#fffffff2;box-shadow:0 2px 10px #243f4110}.markers{position:absolute;inset:0;pointer-events:none;overflow:hidden}.marker{position:absolute;left:0;top:0;min-width:32px;min-height:32px;width:32px;height:32px;border:2px solid #fff;border-radius:50%;padding:0;line-height:28px;pointer-events:auto;color:#fff;background:#26454bbd;box-shadow:0 1px 6px #0007;font:700 13px/28px system-ui,sans-serif;will-change:transform}.marker:hover,.marker.active{background:#c67e23;transform-origin:center}.marker.active{outline:3px solid #ffffff70;outline-offset:2px}.annotation{position:absolute;right:24px;top:20px;width:336px;max-height:calc(100% - 40px);display:flex;flex-direction:column;z-index:3;border:1px solid #fff;background:#fffffff5;box-shadow:0 8px 32px #203c3f20;border-radius:8px;overflow:hidden}.annotation-head{display:flex;gap:12px;align-items:center;padding:18px 20px 16px;border-bottom:1px solid var(--line);flex-shrink:0}.annotation-number{background:var(--teal);color:white;font:600 14px/32px system-ui,sans-serif;text-align:center;min-width:32px;height:32px;border-radius:50%}.annotation h2{font-size:18px;line-height:1.5;margin:0;letter-spacing:.02em}.annotation-body{padding:4px 20px 20px;overflow:auto;overscroll-behavior:contain;font-size:15px;line-height:1.85;scrollbar-width:thin}.annotation-body p{margin:16px 0;overflow-wrap:anywhere}.annotation-body img{width:100%;height:auto;display:block;border-radius:3px}.annotation-body figure{margin:16px 0}.annotation-body figure button{display:block;border:0;min-height:0;padding:0;width:100%}.annotation-body figcaption{font-size:12px;color:var(--muted);margin-top:5px}.annotation-body .local-link{display:inline-block;padding:8px 12px;background:#eef5f4;border:1px solid var(--line);border-radius:4px;text-decoration:none;font-weight:700}.annotation-body:empty{display:none}.start-screen,.loading,.error{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px}.start-screen{background:linear-gradient(120deg,#edf4f2ed,#edf4f28c),url('assets/poster-dam.webp') center/cover}.start-screen.winch{background-image:linear-gradient(120deg,#edf4f2ed,#edf4f28c),url('assets/poster-winch.webp')}.intro{max-width:640px}.intro-kicker{font:600 12px/1.5 system-ui,sans-serif;letter-spacing:.25em;color:#41777c}.intro h2{font-size:clamp(28px,3.3vw,46px);line-height:1.55;letter-spacing:.08em;margin:18px 0}.intro p{font-size:16px;line-height:2;margin:18px 0 28px}.start-actions{display:flex;gap:12px;justify-content:center}.primary{background:var(--teal);border-color:var(--teal);color:#fff;min-height:48px;padding:12px 24px}.primary:hover{background:#103f48}.secondary{min-height:48px;padding:12px 24px}.intro .data-note{font-size:12px;color:var(--muted);margin-top:20px}.loading{background:#eef3f1f5;flex-direction:column;gap:16px}.loading strong{font-size:18px}progress{width:min(320px,75%);height:6px;accent-color:var(--teal)}#load-text{font-size:14px;color:var(--muted)}.spinner{width:32px;height:32px;border:2px solid var(--line);border-top-color:var(--teal);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{background:#f5f7f6;flex-direction:column;gap:16px}.error h2{font-size:22px;margin:0}.error p{max-width:500px}.toolbar{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 24px;background:#fbfdfc;position:relative;z-index:6;border-top:1px solid var(--line)}.tour-controls,.aux-controls{display:flex;align-items:center;gap:8px;min-width:0}.play{background:var(--teal);border-color:var(--teal);color:white;display:flex;gap:8px;align-items:center;justify-content:center;min-width:132px}.play:hover{background:#103f48}.step{font:28px/1 system-ui,sans-serif;width:44px;padding:0}.stop-label{min-width:0}select{background:white;border:1px solid var(--line);border-radius:6px;height:44px;padding:6px 28px 6px 12px;width:264px;max-width:100%;font-size:14px}#tour-status{font-size:12px;color:var(--muted);margin-right:10px;white-space:nowrap}#fullscreen{font-size:24px;line-height:1;padding:8px 12px}.tour-progress{position:absolute;top:-2px;left:0;width:100%;height:2px;background:transparent}.tour-progress i{display:block;height:100%;background:#bd7a29;width:0}.sr-only{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden;white-space:nowrap}dialog{width:min(640px,calc(100% - 32px));max-height:85dvh;border:1px solid var(--line);border-radius:10px;padding:32px;color:var(--ink);box-shadow:0 20px 80px #0f30384d}dialog::backdrop{background:#132e3890}dialog h2{font-size:24px;margin:12px 0 20px}dialog h3{font-size:17px;margin-bottom:8px}dialog p{font-size:15px;line-height:1.9}.dialog-close{position:absolute;right:12px;top:12px;font:24px/1 system-ui;border:0;width:44px;padding:0}.guide{display:grid;grid-template-columns:120px 1fr;gap:12px;font-size:14px}.guide dt{font-weight:700}.guide dd{margin:0}.note{color:var(--muted)}#media-dialog{width:min(1040px,calc(100% - 24px))}#media-content img,#media-content video{display:block;width:100%;max-height:65dvh;object-fit:contain}.noscript{position:fixed;z-index:20;bottom:0;background:white;padding:16px;width:100%}
@media(max-width:1000px){#tour-status{display:none}.masthead{padding:14px 24px}.annotation{width:300px}.toolbar{gap:12px}.aux-controls{gap:6px}.model-tabs a{padding:4px 16px}}
@media(max-width:700px){.viewer{min-height:500px}.masthead{min-height:80px;padding:12px 16px;gap:12px}h1{font-size:20px;letter-spacing:.02em}.eyebrow{font-size:10px;letter-spacing:.04em}.model-tabs{gap:0;padding:3px}.model-tabs a{padding:4px 10px;font-size:12px;min-height:36px}.stage-tools{top:12px;left:12px;right:12px;gap:6px}.stage-tools button{font-size:12px;padding:6px 10px;min-height:36px}.annotation{top:auto;bottom:12px;left:12px;right:12px;width:auto;max-height:40%;border-radius:6px}.annotation-head{padding:10px 14px;gap:10px}.annotation h2{font-size:16px}.annotation-number{font-size:12px;min-width:28px;height:28px;line-height:28px}.annotation-body{font-size:14px;padding:0 14px 12px;line-height:1.8}.annotation-body p{margin:12px 0}.toolbar{min-height:112px;display:grid;grid-template-columns:minmax(0,1fr);padding:10px 12px 8px;gap:6px}.tour-controls{gap:6px;display:grid;grid-template-columns:44px 36px minmax(0,1fr) 36px}.play{min-width:0;width:44px;padding:0}.play span{display:none}.step{width:36px}.stop-label,select{width:100%}.aux-controls{justify-content:flex-end;gap:8px}.aux-controls button{min-height:32px;padding:4px 10px;font-size:12px}#fullscreen{font-size:20px}#tour-status{display:block;margin-right:auto;font-size:11px;overflow:hidden;text-overflow:ellipsis}.intro h2{font-size:30px;line-height:1.65}.intro p{font-size:14px;margin:12px 0 24px}.start-actions{gap:8px}.primary,.secondary{padding:10px 16px;font-size:14px}.intro .data-note{font-size:11px;max-width:290px;margin:16px auto}.marker{width:30px;height:30px;min-width:30px;min-height:30px;font-size:12px;line-height:26px}dialog{padding:24px 20px}.guide{grid-template-columns:90px 1fr;gap:10px;font-size:13px}}
@media(max-height:560px) and (min-width:701px){.masthead{min-height:64px;padding-top:8px;padding-bottom:8px}.toolbar{min-height:64px;padding-top:10px;padding-bottom:10px}.annotation{width:300px}.intro h2{font-size:28px;margin:6px 0}.intro p{margin:8px 0}.intro .data-note{margin:8px 0}.start-actions button{min-height:40px}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none}}
.tour-controls.winch-controls{display:flex;flex:1}.winch-controls .stop-label{width:100%;max-width:380px}.winch-controls select{width:100%}
/* The complete page supplies navigation between the model sections. */
.embedded .model-tabs:not(.quality-tabs){display:none}
@media(max-width:360px){.start-actions{flex-direction:column;align-items:stretch;max-width:240px;margin-inline:auto}.start-actions button{width:100%;white-space:nowrap}}