.rh-guide{--rh-ink:#153c3b;--rh-teal:#087d74;--rh-line:#d7e6e2;--rh-muted:#5e7473;color:var(--rh-ink);margin:38px 0;font-family:'Noto Sans Sinhala',sans-serif;scroll-margin-top:110px}.rh-guide *{box-sizing:border-box}.rh-guide [hidden]{display:none!important}.rh-guide a{text-decoration:none}.rh-guide button,.rh-guide input,.rh-guide select{font:inherit}.rh-guide button,.rh-cover-actions a{border:0;border-radius:10px;padding:11px 16px;background:var(--rh-teal);color:#fff;cursor:pointer;font-weight:700}.rh-guide button:hover{filter:brightness(.94)}.rh-guide :focus-visible,.rh-hero-link:focus-visible{outline:3px solid #edaf46;outline-offset:3px}.rh-hero-link{color:#fff;background:#ffffff22;border:1px solid #ffffff66;padding:9px 13px;border-radius:30px;text-decoration:none}.rh-cover{display:grid;grid-template-columns:1.35fr 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dialog{padding:0;border:0;border-radius:14px;width:min(1100px,96vw);max-height:94vh;box-shadow:0 20px 100px #0005;color:var(--rh-ink)}.rh-guide dialog::backdrop{background:#092e35ce}.rh-viewer-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:13px 18px;background:#eaf5ee}.rh-viewer-toolbar b{font-size:14px}.rh-viewer-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 18px;border-bottom:1px solid var(--rh-line)}.rh-viewer-controls button{font-size:12px;padding:8px 13px}.rh-viewer-controls a{font-size:12px;color:#196c84}.rh-viewer-scroll{overflow:auto;max-height:calc(94vh - 140px);background:#e4e8e6;padding:12px;text-align:center}.rh-viewer-scroll img{max-width:100%;height:auto;background:#fff}.rh-guide #rh-image-error{padding:15px;color:#a63225}.rh-guide button:disabled{opacity:.45;cursor:default}@media(max-width:900px){.rh-reading{grid-template-columns:1fr}.rh-sidebar{position:static}.rh-cover-copy{padding:25px}.rh-cover{grid-template-columns:1.2fr 1fr}.rh-reading-head{flex-wrap:wrap}.rh-sidebar .rh-side-note{display:none}.rh-sidebar input,.rh-sidebar select{max-width:100%}}@media(max-width:600px){.rh-guide{margin-top:22px}.rh-cover{grid-template-columns:1fr}.rh-cover-image{padding:15px}.rh-cover-image img{max-height:180px}.rh-cover-copy{padding:24px}.rh-cover h2{font-size:28px}.rh-table-grid{grid-template-columns:1fr}.rh-topic summary{padding:14px;gap:10px}.rh-topic summary b{font-size:13px}.rh-topic-body{padding:17px}.rh-topic-body p{font-size:13px}.rh-table-section,.rh-library{padding:18px}.rh-table summary{grid-template-columns:85px 1fr}.rh-viewer-toolbar{padding:10px}.rh-viewer-toolbar b{font-size:12px}.rh-source-note{padding:16px;font-size:11px}.rh-viewer-scroll{padding:3px}}@media print{.rh-sidebar,.rh-reading-head 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