.sb-intro h1{font-size:clamp(34px,4vw,59px);max-width:750px;line-height:1.05;margin:18px 0}.sb-intro>p{max-width:670px}.sb-intro{margin-bottom:28px}.sb-toolbar{display:grid;grid-template-columns:2fr 1.5fr 1fr 1fr;gap:14px;padding:20px;margin-bottom:22px}.sb-toolbar label,.sb-search{display:grid;gap:8px;font-size:11px;color:#bbcee5}.sb-toolbar select,.sb-search input{width:100%;min-width:0;padding:12px;background:#12273e;border:1px solid #6d8aaa80;border-radius:12px;color:#edf5ff;font:inherit;font-size:14px}.sb-workspace{display:grid;grid-template-columns:minmax(270px,.9fr) minmax(300px,1.1fr);gap:22px;align-items:start}.sb-preview-panel{padding:24px;text-align:center;position:static;background:radial-gradient(ellipse at 50% 45%,#386b9b50,transparent 70%),linear-gradient(140deg,#a4cfff18,#14345630)}.sb-preview-panel [data-preview]{max-width:306px;margin:24px auto}.sb-preview-panel svg{display:block;width:100%;filter:drop-shadow(0 18px 20px #0005)}.sb-preview-panel p{font-size:12px;line-height:1.6}.sb-preview-caption{display:flex;justify-content:space-between;gap:8px;font-size:10px;color:#bad3ef;letter-spacing:1px}.sb-editor{padding:24px}.sb-editor h2,.sb-library h2{font-size:24px;margin:0}.sb-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.sb-heading span{font-size:11px;color:#b4cde5}.sb-editor>p{font-size:12px}.sb-fields{padding:0;list-style:none;margin:18px 0}.sb-field{display:flex;align-items:center;gap:10px;padding:12px 0;border-top:1px solid #b5d4f02b}.sb-number{font-size:10px;color:#91b9dc}.sb-field>div:not(.sb-field-actions){flex:1;min-width:0}.sb-field strong{display:block;font-size:12px;font-weight:600}.sb-field small{display:block;font-size:10px;color:#a5bed5;margin-top:5px}.sb-field-actions{display:flex;gap:4px}.sb-field-actions button,.sb-secondary{border:1px solid #abcdf34d;border-radius:10px;background:#91b7e015;color:#eaf4ff;cursor:pointer;padding:9px 12px;font-size:12px}.sb-field-actions button{min-width:32px;min-height:36px;padding:7px}.sb-field-actions button:hover,.sb-secondary:hover{background:#b6d4ef30}.sb-workspace button:disabled{opacity:.35;cursor:default}.sb-library{grid-column:1/-1;padding:25px}.sb-library-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.sb-library-head p{font-size:12px;margin:8px 0 0}.sb-search{min-width:230px}.sb-library-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;max-height:370px;overflow:auto;padding:3px}.sb-library-item{position:relative;padding:15px 45px 15px 13px;text-align:left;color:#f0f6ff;background:#a5ccee0c;border:1px solid #b2d4f230;border-radius:12px;cursor:pointer}.sb-library-item span,.sb-library-item small{display:block}.sb-library-item span{font-size:12px}.sb-library-item small{font-size:10px;color:#aac5dc;margin-top:6px}.sb-library-item b{position:absolute;right:10px;top:18px;font-size:11px;color:#ffd55d}.sb-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.sb-actions .button{font-size:12px;padding:11px 17px}.sb-status{font-size:12px;min-height:22px;margin:15px 0}.sb-disclaimer{font-size:11px!important;color:#aec2d7}.sb-embed-code{width:100%;min-height:135px;background:#0e2033;color:#d9ebff;border:1px solid #87aed7;padding:14px;border-radius:12px;margin-top:16px;font-size:12px}.sb-import{display:inline-flex;align-items:center}.sb-import input{max-width:205px;font-size:11px;margin-left:10px}.sb-guide-link{font-size:12px;color:#f7d565}.sb-workspace :focus-visible,.sb-toolbar :focus-visible{outline:2px solid #ffdc61;outline-offset:3px}.sb-embed-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.sb-embed-grid section{padding:24px}.sb-embed-grid h2{font-size:25px}.sb-embed-grid p{font-size:14px}.sb-embed-grid svg{width:100%;max-height:470px}
@media(max-width:1100px){.sb-toolbar{grid-template-columns:1fr 1fr}.sb-workspace{grid-template-columns:minmax(230px,.8fr) minmax(250px,1fr)}.sb-editor{padding:18px}.sb-library-list{grid-template-columns:repeat(2,minmax(0,1fr))}.sb-field-actions{gap:2px}.sb-field-actions button{min-width:28px;padding:4px}}
@media(max-width:850px){.sb-workspace{grid-template-columns:1fr}.sb-preview-panel{position:static}.sb-preview-panel [data-preview]{max-width:270px}.sb-library{grid-column:auto}.sb-library-head{display:block}.sb-search{margin-top:16px;min-width:0}.sb-library-list{grid-template-columns:1fr 1fr}.sb-embed-grid{grid-template-columns:1fr}}
@media(max-width:420px){.sb-toolbar{padding:15px;gap:12px}.sb-library-list{grid-template-columns:1fr}.sb-editor,.sb-library{padding:18px}.sb-import{display:block}.sb-import input{display:block;margin:10px 0 0}}
/* © 2026 David Sommerville. All rights reserved. */
.sb-field-actions button[data-action="remove"],.sb-close{border-radius:50%;background:#ac253b;color:#ffe16b;border:1px solid #e56675;font-weight:800;font-size:20px;line-height:1}.sb-field-actions button[data-action="remove"]:hover,.sb-close:hover{background:#ca324b}.sb-field-actions button[data-action="remove"]:disabled{opacity:.65}.sb-toolbar{grid-template-columns:repeat(4,minmax(0,1fr))}.sb-preview-panel [data-preview]{max-width:100%;transition:width .2s}.sb-preview-panel [data-model-note]{font-size:11px}.sb-save,.sb-license,.sb-guide-notes{padding:28px;margin-top:28px}.sb-save h2,.sb-license h2,.sb-guide-notes h2{font-size:28px}.sb-save p,.sb-license p,.sb-guide-notes p{font-size:14px;line-height:1.8}.sb-license{border-color:#aac8ed80;background:radial-gradient(ellipse at right top,#35699780,transparent 70%),#152a42}.sb-license .sb-credit{color:#e4f1ff;font-size:20px}.sb-copyright,.sb-rights{font-size:12px;color:#b3cbe2}.sb-rights{margin-top:32px;padding-top:22px;border-top:1px solid #a7c9e540;line-height:1.8}.sb-rights p{font-size:12px}.sb-rights a,.sb-copyright a{color:#acd3ff;text-decoration:underline}.sb-embed-grid section>p{text-align:center;line-height:1.8}.sb-embed-grid .sb-guide-subtitle{color:#c8e2ff;font-weight:600}.sb-embed-grid section>.button{display:flex;width:fit-content;margin:22px auto 0;background:#a3c9ec18;border-color:#91b1d555;color:#d3e5f6;box-shadow:none;font-weight:600}.sb-embed-grid section>.button:hover{background:#a3c9ec30}.sb-embed-grid .sb-field-caption{font-size:12px;color:#a4bed6;margin:20px auto;max-width:360px}.sb-guide-notes h3{font-size:20px;margin-top:26px}.sb-dialog{background:#14283e;color:#edf5ff;border:1px solid #789ec5;border-radius:24px;width:min(580px,calc(100% - 32px));padding:30px;max-height:90vh;overflow:auto}.sb-dialog::backdrop{background:#020b16b8;backdrop-filter:blur(7px)}.sb-dialog h2{font-size:27px;padding-right:25px}.sb-dialog p{font-size:13px;line-height:1.7}.sb-dialog form{display:grid;gap:15px}.sb-dialog label{display:grid;gap:7px;font-size:12px}.sb-dialog input:not([type=checkbox]),.sb-dialog textarea{width:100%;background:#0c1c2d;color:#f0f7ff;border:1px solid #7495b680;padding:12px;border-radius:9px;font:inherit}.sb-dialog .sb-consent{display:flex;align-items:start;line-height:1.6}.sb-consent input{margin-top:3px}.sb-dialog .sb-trap{display:none}.sb-close{position:absolute;top:16px;right:16px;width:32px;height:32px;cursor:pointer}.sb-dialog button:disabled{opacity:.5}.sb-guide-notes{margin-bottom:25px}
@media(max-width:1000px){.sb-toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(prefers-reduced-motion:reduce){.sb-preview-panel [data-preview]{transition:none}}
.sb-compatibility{padding:22px;margin:0 0 22px}.sb-compatibility h2{font-size:20px}.sb-compatibility p{font-size:12px;line-height:1.8}.sb-compatibility a{color:#b6d7ff;text-decoration:underline}.sb-compatibility [data-capability-warning]:not(:empty){border-left:3px solid #e9bd52;padding-left:12px;color:#ead8a8}.sb-toolbar select:disabled{opacity:.8;cursor:default}.sb-zoom{margin:15px 0}.sb-zoom button{margin:3px}.sb-zoom small{font-size:10px;color:#b3c9de}.sb-zoom[hidden]{display:none}
.sb-guide-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:22px 0}.sb-guide-detail{border-top:1px solid #a7c9e530;padding:18px 0}.sb-guide-detail summary{cursor:pointer;font-size:17px;font-weight:650}.sb-guide-detail summary span{display:block;font-size:12px;color:#a5bfd9;font-weight:400;margin:8px 0 0 18px}.sb-guide-detail .sb-secondary{display:inline-flex;margin:5px 0 12px}.sb-guide-notes:target{scroll-margin-top:24px}@media(max-width:740px){.sb-guide-steps{grid-template-columns:1fr;gap:0}}
/* Review revisions: prominent guide action, compact utility controls. */
.sb-intro .sb-guide-link{display:inline-flex;align-items:center;justify-content:space-between;gap:30px;min-height:62px;font-size:20px;padding:18px 28px;margin:12px 0 6px;max-width:100%;border-radius:18px}
.sb-library .sb-save-inline{margin:20px 0 0;padding:18px 0 0;border-top:1px solid #a7c9e530}.sb-save-inline h3{font-size:18px;margin:0 0 6px}.sb-save-inline p{font-size:12px;line-height:1.5;margin:4px 0}.sb-save-inline .sb-actions{margin-top:12px;gap:8px}.sb-save-inline .sb-status:empty{display:none}.sb-save-inline .sb-status{min-height:0}.sb-save-inline .sb-disclaimer{margin-top:8px}.sb-compatibility{margin:28px 0 0;padding:18px 22px}.sb-compatibility h2{font-size:17px;margin-bottom:8px}.sb-compatibility p{margin:8px 0;font-size:12px;line-height:1.6}.sb-compatibility summary{font-size:12px;color:#b6d7ff;cursor:pointer}.sb-compatibility [data-capability-warning]:empty{display:none}@media(max-width:740px){.sb-intro .sb-guide-link{font-size:17px;width:100%;gap:12px;padding:16px 20px}.sb-save-inline .sb-import{max-width:100%}.sb-save-inline .sb-import input{max-width:100%}}
.sb-page-controls{display:flex;align-items:center;justify-content:center;gap:14px;margin:8px 0 18px}.sb-page-controls button{min-width:44px;min-height:44px;font-size:22px}.sb-page-controls span{font-size:12px;color:#c9ddf1;min-width:120px;max-width:200px}.sb-preview-panel [data-preview]{touch-action:pan-y;user-select:none}.sb-preview-panel .sb-preview-note{font-size:11px;line-height:1.6;margin:12px 0 0}