.rp-page { --rp-space: clamp(20px, 3vw, 36px); }
.rp-page [hidden] { display: none !important; }
.rp-hero { padding-top: 116px; padding-bottom: 48px; }
.rp-breadcrumb { display:flex; flex-wrap:wrap; gap:12px; color:var(--text-dim); font-size:.82rem; margin-bottom:30px; }
.rp-page a { text-decoration:underline; text-underline-offset:4px; }
.rp-breadcrumb a { text-decoration:none; }
.rp-hero h1 { font-size:clamp(2.2rem,5.1vw,3.65rem); line-height:1.12; letter-spacing:-.045em; max-width:900px; margin:14px 0 22px; }
.rp-lead { max-width:760px; color:var(--text-dim); font-size:1.08rem; }
.rp-links { display:flex; gap:22px; flex-wrap:wrap; font-size:.86rem; margin-top:26px; }
.rp-links a:first-child { color:var(--accent-ink); }
.rp-workspace { display:grid; grid-template-columns:minmax(270px, .85fr) minmax(0,1.6fr); gap:24px; align-items:start; scroll-margin-top:90px; }
.rp-controls,.rp-results { padding:var(--rp-space); border:1px solid var(--border); border-radius:var(--radius); background:var(--surface); min-width:0; }
.rp-results { background:var(--bg-soft); }
.rp-section-heading { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:24px; }
.rp-section-heading h2 { font-size:1.15rem; line-height:1.3; }
.rp-step { display:grid; place-items:center; width:28px; height:28px; border:1px solid var(--border); border-radius:50%; color:var(--accent-ink); font: .75rem var(--mono); flex:none; }
.rp-reference { color:var(--text-dim); font-size:.72rem; width:100%; }
.rp-modes { border:0; display:grid; gap:8px; margin-bottom:24px; }
.rp-modes legend { font-size:.85rem; font-weight:650; padding-bottom:8px; }
.rp-modes label { display:flex; gap:10px; align-items:center; padding:10px 12px; border:1px solid var(--border); border-radius:8px; cursor:pointer; }
.rp-modes label:has(:checked) { border-color:var(--accent-ink); background:var(--accent-glow); }
.rp-modes span { font-size:.9rem; font-weight:600; }
.rp-modes small { display:block; font-size:.72rem; font-weight:400; color:var(--text-dim); }
.rp-page input,.rp-page select,.rp-page button { font:inherit; }
.rp-page input[type=radio] { accent-color:var(--accent-ink); width:17px; height:17px; flex:none; }
.rp-field { display:grid; gap:7px; margin-bottom:18px; min-width:0; }
.rp-field label { font-size:.85rem; font-weight:600; }
.rp-field label [data-unit] { color:var(--text-faint); font-size:.75rem; font-weight:400; margin-left:4px; }
.rp-field input,.rp-field select { width:100%; min-width:0; padding:12px; color:var(--text); background:var(--bg); border:1px solid var(--border); border-radius:7px; font-size:.9rem; }
.rp-field select { padding-right:22px; }
.rp-field input:focus-visible,.rp-field select:focus-visible { outline:2px solid var(--accent-ink); outline-offset:3px; }
.rp-help { font-size:.75rem; color:var(--text-dim); line-height:1.55; }
.rp-presets { display:flex; gap:6px; }
.rp-presets button,.rp-reset { background:none; border:1px solid var(--border); border-radius:6px; color:var(--text-dim); padding:7px 13px; font-size:.78rem; cursor:pointer; }
.rp-presets button:hover { border-color:var(--accent-ink); color:var(--text); }
.rp-details { border-block:1px solid var(--border); margin:14px 0 20px; }
.rp-details summary { padding:14px 0; font-size:.86rem; font-weight:600; cursor:pointer; }
.rp-dimensions { padding-top:10px; }
.rp-calculate { width:100%; padding:13px 10px; }
.rp-reset { width:100%; border:0; margin-top:8px; }
.rp-errors { color:var(--bad-ink); margin-top:16px; font-size:.86rem; }
.rp-errors ul { list-style:disc; padding-left:20px; }
.rp-status { color:var(--text-dim); border-bottom:1px solid var(--border); padding-bottom:18px; margin-bottom:24px; font-size:.86rem; }
.rp-status.has-fail { color:var(--bad-ink); }
.rp-metrics { display:grid; grid-template-columns:1fr 1fr; gap:24px 16px; margin-bottom:32px; }
.rp-metrics span,.rp-metrics small { display:block; color:var(--text-dim); font-size:.74rem; }
.rp-metrics strong { display:block; font-family:var(--mono); font-weight:500; font-size:clamp(1.4rem,2.1vw,2rem); margin:6px 0; color:var(--accent-ink); line-height:1.2; overflow-wrap:anywhere; }
.rp-metrics small { font-size:.68rem; }
.rp-diagram { padding:20px 14px; background:var(--surface); border:1px solid var(--border); border-radius:10px; margin-bottom:18px; min-width:0; }
.rp-figure-heading { display:flex; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.rp-diagram h3 { font-size:.88rem; font-weight:600; }
.rp-figure-heading span { color:var(--accent-ink); font: .7rem var(--mono); }
.rp-diagram svg { display:block; width:100%; height:auto; overflow:visible; }
.rp-diagram figcaption { color:var(--text-dim); font-size:.7rem; line-height:1.5; margin-top:10px; }
.rp-svg-line { fill:none; stroke:var(--accent-ink); stroke-width:3; }
.rp-svg-base { stroke:var(--text-faint); stroke-width:1; stroke-dasharray:4 4; }
.rp-svg-fill { fill:var(--accent-glow); stroke:var(--accent-ink); stroke-width:2; }
.rp-svg-landing { fill:var(--surface-2); stroke:var(--text-faint); stroke-width:1.5; }
.rp-svg-text { fill:var(--text); font:12px var(--mono); }
.rp-svg-muted { fill:var(--text-dim); font:11px var(--font); }
.rp-facts { display:grid; grid-template-columns:1fr 1fr; gap:15px; padding:10px 0 20px; }
.rp-facts div { border-bottom:1px solid var(--border); padding-bottom:10px; }
.rp-facts dt { font-size:.73rem; color:var(--text-dim); }
.rp-facts dd { font:.91rem var(--mono); margin-top:5px; }
.rp-check-section h3,.rp-notes h3 { font-size:.97rem; margin-bottom:12px; }
.rp-checks { display:grid; gap:10px; }
.rp-checks li { padding:12px; border:1px solid var(--border); border-radius:8px; }
.rp-checks header { display:flex; justify-content:space-between; gap:12px; font-size:.8rem; align-items:start; }
.rp-checks p { color:var(--text-dim); font-size:.78rem; margin-top:6px; }
.rp-checks small { display:block; color:var(--text-faint); font-size:.67rem; margin-top:6px; }
.rp-badge { font-size:.65rem; padding:2px 7px; border:1px solid currentColor; border-radius:4px; flex:none; }
.rp-badge.pass { color:var(--good-ink); }.rp-badge.fail { color:var(--bad-ink); }.rp-badge.review { color:var(--text-dim); }
.rp-notes { padding:20px 0; margin-top:18px; font-size:.79rem; color:var(--text-dim); }
.rp-notes ul { list-style:disc; padding-left:18px; margin-bottom:14px; }.rp-notes li+li { margin-top:7px; }
.rp-actions { display:flex; gap:8px; flex-wrap:wrap; }.rp-actions .btn { border:1px solid var(--border); padding:10px 13px; font-size:.74rem; }
#rp-copy-status { margin-top:10px; }#rp-copy-fallback { width:100%; min-height:260px; background:var(--surface); color:var(--text); padding:10px; }
.rp-explain { padding-top:64px; padding-bottom:8px; }.rp-explain:last-child { padding-bottom:64px; }
.rp-explain>h2 { font-size:1.7rem; margin-bottom:18px; letter-spacing:-.025em; }.rp-explain>p { color:var(--text-dim); max-width:850px; margin-bottom:24px; }
.rp-table-wrap { overflow-x:auto; max-width:100%; }
.rp-page table { border-collapse:collapse; width:100%; font-size:.8rem; text-align:left; }
.rp-page th,.rp-page td { padding:12px; border-bottom:1px solid var(--border); }
.rp-page th { color:var(--text-dim); font-size:.75rem; }.rp-page caption { text-align:left; color:var(--text-dim); font-size:.75rem; padding:8px 0; }
.rp-page table button { padding:7px 10px; cursor:pointer; color:var(--accent-ink); background:var(--surface); border:1px solid var(--border); border-radius:6px; font-size:.75rem; }
.rp-learning-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px; }.rp-learning-grid article { padding:24px; background:var(--surface); border:1px solid var(--border); border-radius:12px; min-width:0; }
.rp-learning-grid h3 { font-size:1rem; margin-bottom:12px; }.rp-learning-grid p { color:var(--text-dim); font-size:.86rem; margin-bottom:16px; }.rp-learning-grid a,.rp-source-list { font-size:.79rem; }.rp-source-list li+li { margin-top:10px; }.rp-learning-grid code { font:.78rem var(--mono); color:var(--accent-ink); overflow-wrap:anywhere; }.rp-letter { display:block; font:1.8rem var(--mono); color:var(--accent-ink); margin-bottom:18px; }
.rp-formulas,.rp-next { margin-top:24px; font-size:.85rem; }
@media(max-width:850px) { .rp-workspace { grid-template-columns:1fr; }.rp-learning-grid { grid-template-columns:1fr; }.rp-hero { padding-top:100px; }.rp-controls { padding:24px; }.rp-results { padding:24px; } }
@media(max-width:440px) { .rp-metrics { gap:20px 12px; }.rp-results,.rp-controls { padding:18px; }.rp-hero h1 { font-size:2.1rem; }.rp-page th,.rp-page td { padding:10px 7px; }.rp-facts { grid-template-columns:1fr; }.rp-actions .btn { flex:1; } }
@media print { .nav,.footer,.rp-breadcrumb,.rp-links,.rp-controls,.rp-explain,.rp-actions,#rp-copy-status,.to-top { display:none!important; }.rp-hero { padding:0 0 16px; }.rp-hero h1 { font-size:24pt; }.rp-lead { font-size:10pt; }.rp-workspace { display:block; }.rp-results { border:0; padding:0; }.rp-page { --bg:white;--bg-soft:white;--surface:white;--surface-2:#eee;--text:#111;--text-dim:#333;--text-faint:#555;--border:#bbb;--accent-ink:#005a47;--accent-glow:#e3f4ed;--good-ink:#005a47;--bad-ink:#8b1515; }.rp-diagram,.rp-checks li { break-inside:avoid; }.rp-notes { font-size:9pt; }.rp-page a { color:#111; }.rp-details summary { display:none; }.rp-details>* { display:block!important; } }