.box-page{max-width:1200px;margin:0 auto;padding:30px 40px 48px}
.box-breadcrumb{font-size:13px;margin-bottom:34px}
.box-breadcrumb a{text-decoration:none;display:inline-flex;gap:10px;align-items:center;min-height:40px}
.box-intro{max-width:760px;margin-bottom:30px}
.box-intro .eyebrow{display:block;font-size:11px;letter-spacing:.15em;text-transform:uppercase;margin-bottom:15px;color:#626f5b}
.box-intro h1{font-size:clamp(30px,4.4vw,52px);line-height:1.08;letter-spacing:-.045em;font-weight:550;max-width:720px}
.box-intro>p{max-width:580px;margin:16px 0 18px;line-height:1.65;color:#53604f;font-size:14px}
.box-badge{display:inline-block;border:1px solid #d2dcc0;background:#ecf0e0;border-radius:30px;font-size:11px;padding:7px 12px}
.box-workbench{display:grid;grid-template-columns:minmax(0,.88fr) minmax(0,1.18fr);gap:28px;align-items:start}
.box-controls{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px}
.box-controls h2,.box-preview h2{font-size:16px;font-weight:600;letter-spacing:-.02em}
.box-controls-note{font-size:12px;color:#5f6b58;line-height:1.6;margin:8px 0 22px}
.box-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:21px 16px}
.box-field{min-width:0}
.box-field label{display:block;font-size:12px;font-weight:600;line-height:1.4;min-height:34px}
.box-input-wrap{position:relative}
.box-input-wrap input{width:100%;min-width:0;min-height:46px;padding:10px 36px 10px 12px;background:#f9faf6;border:1px solid #cbd3c3;border-radius:8px;color:var(--ink);font-size:17px}
.box-input-wrap input[aria-invalid=true]{border-color:#a0442d;background:#fff8f4}
.box-input-wrap>span{position:absolute;right:12px;top:15px;font-size:11px;color:#5a6854;pointer-events:none}
.box-range{display:block;color:#68735f;font-size:10px;line-height:1.5;margin-top:7px}
.box-field-error{display:block;font-size:11px;line-height:1.5;color:#993a25;margin-top:5px}
.box-errors{margin-top:20px;padding:12px;border-radius:8px;background:#fff1e9;color:#883822;font-size:12px;line-height:1.6}
.box-actions{display:grid;gap:12px;margin-top:25px}
.box-actions .button{justify-content:center;text-decoration:none;min-height:48px;text-align:center}
.box-actions a[aria-disabled=true]{opacity:.5;cursor:default}
.box-reset{font-size:12px;min-height:36px;text-decoration:underline;text-underline-offset:3px}
.box-file-note{font-size:11px;line-height:1.7;color:#66705e;margin-top:18px}
.box-preview{min-width:0;margin:0}
.box-preview-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 12px}
.box-preview-controls{display:flex;gap:6px}
.box-preview-controls button{background:#fff;border:1px solid var(--line);border-radius:8px;width:38px;height:38px;font-size:19px}
.box-preview-controls button[aria-pressed=true]{background:#dce8b9}
.box-stage{position:relative;background:#e7ecd9;border:1px solid #d8dfcc;border-radius:18px;overflow:hidden;background-image:linear-gradient(#6e7d5810 1px,transparent 1px),linear-gradient(90deg,#6e7d5810 1px,transparent 1px);background-size:34px 34px}
.box-stage canvas{display:block;width:100%;height:370px;outline-offset:-5px}
.box-gesture{text-align:center;color:#58664a;font-size:10px;line-height:1.6;padding:12px 16px;border-top:1px solid #d8dfcc}
.box-open-top{font-size:11px;color:#56644a;line-height:1.6;margin:10px 2px 17px}
.box-dimensions{display:grid;grid-template-columns:1fr 1fr;gap:18px;border-top:1px solid #d5ddca;padding-top:18px}
.box-dimensions dt{font-size:11px;color:#5d6b51;margin-bottom:7px}
.box-dimensions dd{margin:0;font-size:clamp(14px,1.5vw,18px);font-weight:600;letter-spacing:-.025em;overflow-wrap:anywhere}
.box-size-order{font-size:10px;color:#6b755f;margin-top:10px}
.box-ready{font-size:11px;line-height:1.6;color:#536346;margin-top:12px}
.box-invalid-preview{min-height:370px;display:grid;place-content:center;padding:40px;font-size:14px;line-height:1.7;color:#77432f;text-align:center}
.box-limits{border-top:1px solid var(--line);margin-top:34px;padding-top:24px;max-width:850px}
.box-limits h2{font-size:15px;font-weight:600;line-height:1.5}
.box-limits p{font-size:12px;line-height:1.8;color:#5b6755;margin-top:10px}
@media(max-width:760px){.box-page{padding:20px 20px 38px}.box-breadcrumb{margin-bottom:24px}.box-workbench{grid-template-columns:1fr;gap:24px}.box-preview{order:-1}.box-stage canvas,.box-invalid-preview{height:300px;min-height:300px}.box-intro h1{font-size:36px}.box-controls{padding:22px}.box-dimensions dd{font-size:17px}}
@media(max-width:390px){.box-page{padding-inline:14px}.box-intro h1{font-size:30px}.box-controls{padding:17px}.box-fields{gap:18px 12px}.box-field label{font-size:11px}.box-dimensions{gap:12px}.box-dimensions dd{font-size:14px}.box-preview h2{font-size:14px}.box-preview-heading{gap:8px}.box-range{font-size:9px}}
.main-nav>a.nav-link{text-decoration:none;white-space:nowrap;display:inline-flex;align-items:center}
@media(max-width:760px){.main-nav{min-width:0;overflow-x:auto;scrollbar-width:thin;max-width:100%;flex-shrink:1}}
@media(max-width:440px){.main-nav{gap:20px}.main-nav .nav-link{flex-shrink:0}}
.box-mount-controls{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}
.box-mount-toggle{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;line-height:1.5;cursor:pointer}
.box-mount-toggle input{width:19px;height:19px;accent-color:#526f3b;flex-shrink:0}
.box-mount-intro{font-size:11px;line-height:1.7;color:#5f6b58;margin:13px 0 20px}
.box-mount-output{border-top:1px solid #d5ddca;margin-top:17px;padding-top:16px}
.box-mount-output h3{font-size:12px;font-weight:600;line-height:1.5}
.box-mount-output ul{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:7px 14px;font-size:11px;color:#526046;line-height:1.5}
.box-mount-output p{font-size:11px;line-height:1.7;color:#5c6950}
@media(min-width:761px){.box-preview{position:sticky;top:24px}}