:root{color-scheme:light;--paper: #ffffff;--stage: #eceff2;--ink: #1b2129;--muted: #5b6572;--line: #d6dbe1;--accent: #0f52ba;--accent-deep: #0a3a85;--accent-soft: #e7eefa;--mineral: #6e7a87;--mineral-deep: #46515d;--bad: #9c2f1a;--shadow: 0 10px 30px rgba(27, 33, 41, .14), 0 1px 3px rgba(27, 33, 41, .12);font-family:Segoe UI,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}html,body{height:100%}body{margin:0;background:var(--stage);color:var(--ink);font-size:16px;line-height:1.4;overflow:hidden;display:flex;flex-direction:column}header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px max(16px,env(safe-area-inset-right,0px)) 12px max(16px,env(safe-area-inset-left,0px));background:var(--paper);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:14px;font-size:19px;font-weight:700;white-space:nowrap}.brand img{height:28px;width:auto}a.brand{color:inherit;text-decoration:none}.brand span{padding-left:14px;border-left:1px solid var(--line);color:var(--mineral-deep)}.header-tools{display:flex;align-items:center;gap:16px}#languages{display:flex;gap:4px}#languages button{min-width:36px;padding:6px 8px;border:1px solid var(--line);border-radius:6px;background:var(--paper);color:var(--mineral-deep);font-size:13px;font-weight:700;cursor:pointer}#languages button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}#stage{position:relative;flex:1;min-height:0;overflow:hidden}#stage:before{content:"";position:absolute;inset:0;background:url(assets/brand/hendl-logo.png) center 38% / min(56%,720px) auto no-repeat;opacity:.05;pointer-events:none}#view{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}.scene-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}.scene-label{position:absolute;left:0;top:0;padding:3px 8px;border-radius:4px;background:var(--accent);color:#fff;font-size:13px;font-weight:650;font-variant-numeric:tabular-nums;white-space:nowrap}#panel{position:absolute;top:16px;left:max(16px,env(safe-area-inset-left,0px));width:min(380px,calc(100% - 32px));max-height:calc(100% - 104px);overflow:auto;padding:18px 18px 14px;background:var(--paper);border-radius:10px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}#panel h2,#result h2{margin:0;font-size:20px;text-wrap:balance}.intro{margin:0;color:var(--muted);font-size:14.5px}.hint{margin:0;color:var(--muted);font-size:13px}.drag-tip{margin:0;padding-top:10px;border-top:1px solid var(--line);color:var(--accent-deep);font-size:13px;font-weight:650}.notice{margin:0;font-size:14px;color:var(--mineral-deep)}.notice:empty{display:none}.fix{display:grid;gap:8px}.fix.offer{padding:10px 12px;border:1px solid var(--accent);border-radius:8px;background:var(--accent-soft)}.fix-changes{margin:0;padding-left:18px;font-size:14px}.fix-changes li+li{margin-top:2px}.fix .hint{margin:0}.fix-actions{display:flex;gap:8px;flex-wrap:wrap}.fix-button{padding:7px 12px;border:1px solid var(--accent);border-radius:6px;background:var(--paper);color:var(--accent);font:inherit;font-size:14px;cursor:pointer;justify-self:start}.fix-button:hover{background:var(--accent-soft)}.fix-button.primary{background:var(--accent);color:#fff}.fix-button.primary:hover{background:var(--accent-deep)}.fix-button:disabled{opacity:.6;cursor:default}.fix-button.link{padding:0;border:0;background:none;text-decoration:underline}.fix-done{margin:0;font-size:14px;color:var(--mineral-deep)}.notice.bad{padding:8px 10px;border-radius:6px;background:#fbefec;color:var(--bad)}.field{display:flex;flex-direction:column;gap:5px}.field-label{font-size:13px;font-weight:650;color:var(--mineral-deep)}.number{display:flex;align-items:stretch;border:1px solid var(--line);border-radius:6px;background:var(--paper);overflow:hidden}.number:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.number input{flex:1;min-width:0;width:100%;appearance:textfield;-moz-appearance:textfield;padding:8px;border:0;font:inherit;font-variant-numeric:tabular-nums;outline:none}.number input::-webkit-outer-spin-button,.number input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.unit{display:flex;align-items:center;padding:0 7px;background:#f4f6f8;color:var(--muted);font-size:13px}.unit:empty{display:none}select{padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:var(--paper);font:inherit}select:focus-visible{outline:3px solid var(--accent-soft);border-color:var(--accent)}.row-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.row-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.check{display:flex;align-items:center;gap:8px;font-size:14.5px;cursor:pointer}.check input{width:17px;height:17px;accent-color:var(--accent)}.choice{display:grid;grid-template-columns:1fr 1fr;gap:10px}.choice-card{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px 12px;border:1.5px solid var(--line);border-radius:8px;background:var(--paper);font:inherit;text-align:left;cursor:pointer}.choice-card svg{width:100%;height:auto;margin-bottom:6px}.choice-card span{color:var(--muted);font-size:13px}.choice-card[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.pic-load{fill:#dfe3e8;stroke:var(--mineral);stroke-width:1.2}.pic-beam{stroke:#d9a400;stroke-width:3.5;stroke-linecap:round}.pic-point{fill:var(--accent)}.pic-beam-fill{fill:#d9a400}.pic-ring{fill:none;stroke:var(--mineral-deep);stroke-width:1.6}.pic-chain{stroke:var(--mineral-deep);stroke-width:1.6;stroke-dasharray:2.5 1.5}.pic-hole{fill:var(--paper)}.mass-line{margin:0;padding:9px 11px;border-radius:6px;background:var(--accent-soft);color:var(--accent-deep);font-size:14.5px;font-weight:600}.group{margin:0;padding:10px 0 0;border:0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}.group legend{padding:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--mineral)}.segments{display:flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:6px;overflow:hidden}.segments button{flex:1 1 auto;padding:7px 8px;border:0;border-right:1px solid var(--line);background:var(--paper);font:inherit;font-size:13.5px;cursor:pointer}.segments button:last-child{border-right:0}.segments button[aria-pressed=true]{background:var(--accent);color:#fff}#summary{position:absolute;top:16px;right:max(16px,env(safe-area-inset-right,0px));display:flex;gap:2px;margin:0;background:var(--paper);border-radius:10px;box-shadow:var(--shadow);overflow:hidden}#summary div{padding:8px 14px}#summary div+div{border-left:1px solid var(--line)}#summary dt{font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--mineral)}#summary dd{margin:0;font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}body[data-step=result] #summary{display:none}#result{position:absolute;top:16px;right:max(16px,env(safe-area-inset-right,0px));bottom:88px;width:min(560px,calc(100% - 32px));overflow:auto;padding:20px;background:var(--paper);border-radius:10px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}#result>*,#panel>*{flex-shrink:0}#result h3{margin:6px 0 0;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--mineral)}.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden}.facts div{padding:10px 12px;background:var(--paper)}.facts div:last-child:nth-child(odd){grid-column:1 / -1}.facts dt{font-size:12.5px;color:var(--muted)}.facts dd{margin:2px 0 0;font-size:18px;font-weight:700;font-variant-numeric:tabular-nums}.drawing{position:relative;margin:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.drawing-mark{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.drawing img{position:relative;display:block;width:100%;height:auto;user-select:none}.drawing-dims{position:absolute;inset:0;width:100%;height:100%}.drawing-dims .ext{stroke:#6e7a87;stroke-width:1.2}.drawing-dims .dim{stroke:var(--accent-deep);stroke-width:1.6}.drawing-dims .head{fill:var(--accent-deep)}.drawing-dims .value{fill:var(--accent-deep);font:600 26px Segoe UI,Arial,sans-serif}.drawing-dims .stamp{fill:var(--mineral-deep);font:600 22px Segoe UI,Arial,sans-serif}.drawing-dims .load{fill:none;stroke:var(--mineral);stroke-width:2;stroke-dasharray:12 8}.contact{display:flex;flex-direction:column;gap:10px;padding-top:6px;border-top:1px solid var(--line)}.contact h3{margin:6px 0 0}.contact input,.contact textarea{padding:9px 10px;border:1px solid var(--line);border-radius:6px;font:inherit;resize:vertical}.contact input:focus-visible,.contact textarea:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.contact .field-label small{font-weight:400;color:var(--muted)}.contact .field-hint{font-size:13px;color:var(--muted)}.contact .invalid .field-hint{color:var(--bad)}.contact .invalid input,.contact .invalid textarea{border-color:var(--bad)}.contact .consent{align-items:flex-start;font-size:13.5px;line-height:1.45}.contact .consent.invalid span{color:var(--bad)}.contact .consent a{color:var(--accent)}.send{padding:13px 18px;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;font-size:16px;font-weight:700;cursor:pointer}.send:hover{background:var(--accent-deep)}.send:disabled{opacity:.55;cursor:default}#strip{position:absolute;left:50%;bottom:max(16px,env(safe-area-inset-bottom,0px));transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:8px;background:var(--paper);border-radius:12px;box-shadow:var(--shadow);max-width:calc(100% - 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