/* DiffHaven · Cool-paper/ink, desaturated copper accent
   System sans + mono stacks · No external fonts                       */

/* ── Tokens ───────────────────────────────────────────────────────── */
:root {
  /* Paper palette */
  --bg:       #eef1f2;
  --surface:  #f5f7f8;
  --card:     #ffffff;
  --border:   #d4dade;
  --border-s: #c0c8cd;
  /* Ink */
  --ink:      #24343d;
  --ink-2:    #4b5c66;
  --ink-3:    #5d707a;
  --ink-muted:#5d707a;
  /* Copper accent */
  --copper:   #a45e3c;
  --copper-h: #8b4f32;
  --copper-bg:#f4ece6;
  /* Severity */
  --sv-break: #b0413e;
  --sv-break-bg: #faf0ef;
  --sv-review:#967117;
  --sv-review-bg:#faf6ea;
  --sv-add:   #2e7d5b;
  --sv-add-bg:#edf7f2;
  /* Mono */
  --mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  /* Spacing */
  --page-max: 1320px;
  --gap: clamp(1rem, 3vw, 2rem);
  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;
  /* Transitions */
  --ease: cubic-bezier(.16,1,.3,1);
}

/* ── Reset ────────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{font-family:var(--sans);font-size:1rem;line-height:1.6;color:var(--ink);background:var(--bg);min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;border:0;background:none;outline:none}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
code,pre{font-family:var(--mono);font-size:.875em}

/* ── Skip link ────────────────────────────────────────────────────── */
.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--copper);color:#fff;padding:.5rem 1rem;border-radius:0 0 var(--r-sm) var(--r-sm);font-weight:600;font-size:.875rem}
.skip-link:focus{left:50%;transform:translateX(-50%)}

/* ── Page width ───────────────────────────────────────────────────── */
.page-width{max-width:var(--page-max);margin:0 auto;padding-left:var(--gap);padding-right:var(--gap)}

/* ── Header ───────────────────────────────────────────────────────── */
.site-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;max-width:var(--page-max);margin:0 auto;padding:1rem var(--gap)}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.125rem;letter-spacing:-.02em;white-space:nowrap}
.brand .brand-mark{width:28px;height:28px;color:var(--ink);flex-shrink:0}
.brand-dot{color:var(--copper)}
.site-header nav{display:flex;align-items:center;gap:1.5rem;font-size:.875rem;font-weight:500}
.site-header nav a{color:var(--ink-2);transition:color .2s}
.site-header nav a:hover,.site-header nav a:focus-visible{color:var(--ink)}
.site-header nav a[aria-current="page"]{color:var(--ink);border-bottom:1.5px solid var(--copper)}
.nav-workspace{background:var(--ink);color:#fff !important;padding:.45rem .9rem;border-radius:var(--r-sm);transition:background .2s,transform .15s}
.nav-workspace:hover{background:var(--copper-h)}
.nav-workspace:active{transform:scale(.97)}

/* ── Footer ───────────────────────────────────────────────────────── */
.site-footer{max-width:var(--page-max);margin:0 auto;padding:3rem var(--gap) 2rem;display:grid;grid-template-columns:1fr auto;gap:1.5rem 3rem;border-top:1px solid var(--border);font-size:.8125rem;color:var(--ink-3)}
.footer-brand{font-weight:700;font-size:1.125rem;color:var(--ink);letter-spacing:-.02em}
.footer-links{display:flex;gap:1.5rem;flex-wrap:wrap}
.footer-links a:hover{color:var(--ink)}
.footer-note{grid-column:1/-1;border-top:1px solid var(--border);padding-top:1rem;line-height:1.7}

/* ── Eyebrow ──────────────────────────────────────────────────────── */
.eyebrow{font-size:.6875rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);display:flex;align-items:center;gap:.5rem}

/* ── Small square ─────────────────────────────────────────────────── */
.small-square{display:inline-block;width:8px;height:8px;background:var(--copper);border-radius:2px;flex-shrink:0}

/* ── Buttons ──────────────────────────────────────────────────────── */
.button{display:inline-flex;align-items:center;gap:.35rem;font-weight:600;font-size:.875rem;padding:.6rem 1.15rem;border-radius:var(--r-sm);cursor:pointer;transition:background .2s,color .2s,border-color .2s,transform .15s var(--ease);white-space:nowrap;border:1.5px solid transparent}
.button:active{transform:translateY(1px)}
.button:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.button:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}
.button.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.button.primary:hover{background:var(--copper-h);border-color:var(--copper-h)}
.button.secondary{border-color:var(--border-s);color:var(--ink);background:var(--card)}
.button.secondary:hover{border-color:var(--ink-3);background:var(--surface)}
.button.quiet{color:var(--ink-2)}
.button.quiet:hover{color:var(--ink);background:var(--surface)}

.text-link{font-weight:600;font-size:.875rem;color:var(--copper);display:inline-flex;align-items:center;gap:.3rem;transition:color .2s}
.text-link:hover{color:var(--copper-h)}
.text-link:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.text-button{background:none;border:0;cursor:pointer;font-weight:600;font-size:.875rem;color:var(--copper);display:inline-flex;align-items:center;gap:.3rem;transition:color .2s}
.text-button:hover{color:var(--copper-h)}
.text-button:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.file-button{cursor:pointer;font-size:.75rem;font-weight:600;color:var(--copper);padding:.25rem .5rem;border:1.5px solid var(--border);border-radius:var(--r-sm);transition:border-color .2s,color .2s}
.file-button:hover{border-color:var(--copper);color:var(--copper-h)}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start;padding-top:clamp(2.5rem,6vw,5rem);padding-bottom:3rem;min-height:calc(100dvh - 60px)}
.hero-copy{padding-top:2rem}
.hero-copy h1{font-size:clamp(2.25rem,5vw,3.5rem);line-height:1.05;letter-spacing:-.035em;font-weight:800;margin:.75rem 0}
.muted-ink{color:var(--ink-3)}
.hero-description{font-size:1.0625rem;color:var(--ink-2);max-width:42ch;line-height:1.65;margin-bottom:1.5rem}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}
.hero-footnote{font-size:.75rem;color:var(--ink-muted)}

/* ── Hero art ─────────────────────────────────────────────────────── */
.hero-art{position:relative;padding:1.5rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden}
.art-caption{display:flex;justify-content:space-between;font-size:.625rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-muted);margin-bottom:1.5rem}
.contract-sheet{background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);padding:1rem;margin-bottom:.75rem}
.sheet-top{display:flex;justify-content:space-between;font-size:.625rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.5rem}
.contract-sheet .mono{font-size:.8125rem;margin-bottom:.5rem;color:var(--ink)}
.code-lines{font-family:var(--mono);font-size:.6875rem;color:var(--ink-3);line-height:1.8}
.code-lines span{display:block}
.code-indent{padding-left:1rem}
.code-indent-double{padding-left:2rem}
.removed-line{color:var(--sv-break);text-decoration:line-through;padding-left:1rem}
.sheet-after{border-color:var(--copper);border-style:dashed}
.review-slip{background:var(--sv-break-bg);border-left:3px solid var(--sv-break);padding:.75rem 1rem;border-radius:0 var(--r-md) var(--r-md) 0;margin-top:1rem}
.review-slip .slip-heading{display:flex;align-items:center;gap:.5rem;margin-bottom:.35rem;font-size:.6875rem}
.review-slip h2{font-size:.875rem;font-weight:700;margin-bottom:.15rem}
.review-slip p{font-size:.75rem;color:var(--ink-2);margin-bottom:.25rem}
.pointer-line{font-family:var(--mono);font-size:.625rem;color:var(--ink-3)}
.slip-label{font-size:.5625rem;color:var(--ink-muted);font-style:italic;display:block;margin-top:.5rem}
.art-coordinate{font-size:.5625rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted);text-align:right;margin-top:1rem}

/* ── Severity badges ──────────────────────────────────────────────── */
.severity{font-size:.625rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.15rem .5rem;border-radius:var(--r-sm);display:inline-block}
.severity.breaking{background:var(--sv-break-bg);color:var(--sv-break)}
.severity.review{background:var(--sv-review-bg);color:var(--sv-review)}
.severity.additive{background:var(--sv-add-bg);color:var(--sv-add)}

/* ── Principle band ───────────────────────────────────────────────── */
.principle-band{background:var(--ink);color:var(--surface);padding:clamp(2.5rem,6vw,5rem) 0}
.band-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:end;gap:2rem}
.band-inner .eyebrow{color:var(--border-s)}
.band-inner p{font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.2;letter-spacing:-.02em;font-weight:700}
.band-inner strong{color:var(--copper-bg)}
.band-note{font-size:.8125rem;color:var(--border-s);text-align:right;line-height:1.7}

/* ── Approach section ─────────────────────────────────────────────── */
.approach-section{padding:clamp(3rem,7vw,6rem) 0}
.section-heading{max-width:580px;margin-bottom:3rem}
.section-heading h2{font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:.5rem 0}
.section-heading p{color:var(--ink-2);max-width:48ch;line-height:1.65}
.approach-list{display:grid;gap:0}
.approach-list article{display:grid;grid-template-columns:auto 1fr;gap:1.25rem;padding:1.75rem 0;border-top:1px solid var(--border)}
.step-number{font-family:var(--mono);font-size:.8125rem;font-weight:700;color:var(--ink-muted);padding-top:.15rem}
.approach-list h3{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;margin-bottom:.35rem}
.approach-list p{font-size:.9375rem;color:var(--ink-2);max-width:56ch;line-height:1.6}

/* ── Boundary section ─────────────────────────────────────────────── */
.boundary-section{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start;padding:clamp(3rem,6vw,5rem) 0;border-top:1px solid var(--border)}
.boundary-section h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:.5rem 0}
.boundary-section p{font-size:.9375rem;color:var(--ink-2);line-height:1.65;margin-bottom:1rem}
.boundary-section strong{color:var(--ink)}

/* ── Closing section ──────────────────────────────────────────────── */
.closing{text-align:center;padding:clamp(3rem,7vw,5rem) 0;border-top:1px solid var(--border)}
.closing h2{font-size:clamp(1.75rem,3.5vw,2.5rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:.5rem 0 1.5rem}
.closing p{font-size:.875rem;color:var(--ink-3);margin-top:.75rem}

/* ── Document pages ───────────────────────────────────────────────── */
.document-heading{padding:clamp(2.5rem,6vw,5rem) 0 2rem;max-width:660px}
.document-heading h1{font-size:clamp(2rem,4.5vw,3rem);font-weight:800;letter-spacing:-.035em;line-height:1.08;margin:.5rem 0}
.document-heading p{font-size:1.0625rem;color:var(--ink-2);line-height:1.6;max-width:52ch}
.document-layout{display:grid;grid-template-columns:180px 1fr;gap:3rem;padding-bottom:4rem}
.document-nav{position:sticky;top:1.5rem;align-self:start}
.document-nav nav{display:flex;flex-direction:column;gap:.5rem;font-size:.8125rem;font-weight:500}
.document-nav nav a{color:var(--ink-3);padding:.25rem 0;border-left:2px solid transparent;padding-left:.75rem;transition:color .2s,border-color .2s}
.document-nav nav a:hover{color:var(--ink)}
.document-nav nav a:focus-visible{color:var(--ink);outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}
.document-content{max-width:680px}
.document-content section{margin-bottom:2.5rem;padding-bottom:2.5rem;border-bottom:1px solid var(--border)}
.document-content section:last-child{border-bottom:0}
.document-content h2{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;margin:.5rem 0 .75rem}
.document-content h3{font-size:1.125rem;font-weight:700;margin-bottom:.5rem}
.document-content p{font-size:.9375rem;color:var(--ink-2);line-height:1.65;margin-bottom:.75rem}
.document-content code{background:var(--surface);padding:.1em .35em;border-radius:3px;font-size:.8125rem;color:var(--ink)}
.document-content strong{color:var(--ink)}
.document-content a.text-link{margin-top:.5rem}
.prose-list{counter-reset:prose-step;margin:1rem 0}
.prose-list li{counter-increment:prose-step;position:relative;padding-left:2rem;margin-bottom:1rem;font-size:.9375rem;color:var(--ink-2);line-height:1.6}
.prose-list li::before{content:counter(prose-step);position:absolute;left:0;font-family:var(--mono);font-size:.75rem;font-weight:700;color:var(--ink-muted);top:.15rem}
.definitions{margin:1rem 0}
.definitions > div{display:grid;grid-template-columns:auto 1fr;gap:.75rem 1.25rem;padding:.75rem 0;border-top:1px solid var(--border);align-items:start}
.definitions dt{padding-top:.15rem}
.definitions dd{font-size:.9375rem;color:var(--ink-2);line-height:1.6}
.coverage-table{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin:1.5rem 0}
.coverage-table h3{font-size:.875rem;font-weight:700;margin-bottom:.5rem}
.coverage-table ul{font-size:.8125rem;color:var(--ink-2);line-height:1.65}
.coverage-table li{position:relative;padding-left:1rem;margin-bottom:.35rem}
.coverage-table li::before{content:"·";position:absolute;left:0;font-weight:700;color:var(--ink-muted)}

/* ── About layout ─────────────────────────────────────────────────── */
.about-layout{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start;padding-bottom:4rem}
.about-statement{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:clamp(2rem,4vw,3rem);text-align:center;position:sticky;top:1.5rem}
.about-statement .large-brand-mark{display:flex;justify-content:center;margin-bottom:1.5rem}
.about-statement .large-brand-mark .brand-mark{width:64px;height:64px}
.about-statement p{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink)}

/* ── Legal pages ──────────────────────────────────────────────────── */
.legal-page{padding-bottom:4rem}
.legal-page .document-content{max-width:640px}

/* ── 404 ──────────────────────────────────────────────────────────── */
.not-found{padding:clamp(4rem,10vw,8rem) 0;max-width:520px}
.not-found h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;letter-spacing:-.035em;line-height:1.08;margin:.5rem 0 1rem}
.not-found p{font-size:1.0625rem;color:var(--ink-2);line-height:1.6;margin-bottom:1.5rem;max-width:42ch}

/* ═══════════════════════════════════════════════════════════════════
   WORKSPACE
   ═══════════════════════════════════════════════════════════════════ */
.workspace-main{padding-top:1rem;padding-bottom:3rem}
.workspace-heading{display:flex;justify-content:space-between;align-items:end;gap:1rem;padding-bottom:1.5rem}
.workspace-heading h1{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:800;letter-spacing:-.03em;line-height:1.08;margin:.25rem 0}
.workspace-heading p{font-size:.9375rem;color:var(--ink-2)}

/* ── Workspace notice ─────────────────────────────────────────────── */
.workspace-notice{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem 1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);margin-bottom:1.5rem;font-size:.8125rem;color:var(--ink-2);line-height:1.6}
.workspace-notice .small-square{margin-top:.35rem}
.workspace-notice strong{color:var(--ink)}

/* ── Section toolbar ──────────────────────────────────────────────── */
.section-toolbar{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border);margin-bottom:1rem;flex-wrap:wrap}
.section-toolbar h2{font-size:1.125rem;font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:.5rem}
.section-index{font-family:var(--mono);font-size:.6875rem;font-weight:700;color:var(--ink-muted)}
.toolbar-actions{display:flex;gap:.5rem;flex-wrap:wrap}

/* ── Input section ────────────────────────────────────────────────── */
.input-section{margin-bottom:2rem}
.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.input-panel{border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;background:var(--card)}
.input-panel-heading{display:flex;justify-content:space-between;align-items:center;padding:.5rem .75rem;border-bottom:1px solid var(--border);background:var(--surface)}
.input-panel-heading label{display:flex;align-items:center;gap:.4rem;font-size:.8125rem;font-weight:600}
.input-label-number{font-family:var(--mono);font-weight:800;color:var(--copper)}
.input-panel-heading .helper{font-weight:400;color:var(--ink-3);font-size:.75rem}
.spec-input{display:block;width:100%;min-height:220px;max-height:420px;padding:.75rem;font-family:var(--mono);font-size:.75rem;line-height:1.65;resize:vertical;background:var(--card);border:0;color:var(--ink);tab-size:2}
.spec-input::placeholder{color:var(--ink-muted)}
.spec-input:focus{box-shadow:inset 0 0 0 2px var(--copper);border-radius:0}
.input-meta{display:flex;justify-content:space-between;padding:.35rem .75rem;font-size:.6875rem;color:var(--ink-muted);border-top:1px solid var(--border)}
.input-error{padding:.5rem .75rem;font-size:.8125rem;color:var(--sv-break);font-weight:500;background:var(--sv-break-bg);border-top:1px solid var(--sv-break)}
.compare-toolbar{display:flex;justify-content:space-between;align-items:start;gap:1rem;margin-top:1rem;flex-wrap:wrap}
.compare-toolbar .helper{font-size:.75rem;color:var(--ink-3);line-height:1.6;max-width:44ch}
.compare-toolbar .helper a{color:var(--copper);font-weight:500}

/* ── Results section ──────────────────────────────────────────────── */
.results-section{margin-bottom:1.5rem}
.status-line{font-size:.875rem;color:var(--ink-2);margin-bottom:1rem;line-height:1.5}

/* ── Summary grid ─────────────────────────────────────────────────── */
.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;margin-bottom:1.25rem}
.summary-grid > div{background:var(--card);padding:.75rem 1rem;display:flex;flex-direction:column;gap:.15rem}
.summary-grid .summary-label{font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3)}
.summary-grid strong{font-family:var(--mono);font-size:1.25rem;font-weight:800;letter-spacing:-.02em}
.summary-grid span:last-child{font-size:.6875rem;color:var(--ink-muted)}

/* ── Coverage warnings ────────────────────────────────────────────── */
.coverage-warnings{background:var(--sv-review-bg);border:1px solid #e6ddc0;border-radius:var(--r-md);padding:1rem;margin-bottom:1.25rem}
.coverage-warnings h3{font-size:.8125rem;font-weight:700;color:var(--sv-review);margin-bottom:.5rem}
.coverage-warnings li{font-size:.8125rem;color:var(--ink-2);line-height:1.55;padding-left:1rem;position:relative;margin-bottom:.25rem;overflow-wrap:anywhere}
.coverage-warnings li::before{content:"⚠";position:absolute;left:0;font-size:.625rem}

/* ── Filter toolbar ───────────────────────────────────────────────── */
.filter-toolbar{display:flex;align-items:end;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}
.search-field,.severity-field{display:flex;flex-direction:column;gap:.25rem}
.search-field{flex:1;min-width:200px}
.search-field label,.severity-field label{font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3)}
.search-field input{border:1px solid var(--border);border-radius:var(--r-sm);padding:.45rem .65rem;font-size:.8125rem;background:var(--card);transition:border-color .2s}
.search-field input:focus{border-color:var(--copper);box-shadow:0 0 0 2px var(--copper-bg)}
.search-field input:disabled{opacity:.5}
.severity-field select{border:1px solid var(--border);border-radius:var(--r-sm);padding:.45rem .65rem;font-size:.8125rem;background:var(--card);cursor:pointer;transition:border-color .2s;-webkit-appearance:none;appearance:none;padding-right:1.5rem;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a8d96'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .5rem center}
.severity-field select:focus{border-color:var(--copper);box-shadow:0 0 0 2px var(--copper-bg)}
.severity-field select:disabled{opacity:.5}
.filter-toolbar .helper{font-size:.75rem;color:var(--ink-3);margin-left:auto}
#filtered-count{white-space:nowrap}

/* ── Empty / loading ──────────────────────────────────────────────── */
.empty-state{text-align:center;padding:clamp(2rem,4vw,4rem) 1rem;border:1px dashed var(--border);border-radius:var(--r-lg)}
.empty-mark{font-family:var(--mono);font-size:1.5rem;color:var(--ink-muted);display:block;margin-bottom:.75rem}
.empty-state h3{font-size:1.125rem;font-weight:700;margin-bottom:.35rem}
.empty-state p{font-size:.875rem;color:var(--ink-2);margin-bottom:.75rem}
.loading-state{text-align:center;padding:3rem 1rem}
.skeleton{height:14px;background:linear-gradient(90deg,var(--border) 25%,var(--surface) 50%,var(--border) 75%);background-size:200% 100%;border-radius:var(--r-sm);margin:0 auto .75rem;max-width:80%}
.skeleton.short{max-width:50%}
.loading-state p{font-size:.8125rem;color:var(--ink-3);margin-top:1rem}

/* ── Review grid ──────────────────────────────────────────────────── */
.review-grid{display:grid;grid-template-columns:340px 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;min-height:350px}
.findings-pane{background:var(--card);overflow-y:auto;max-height:600px;display:flex;flex-direction:column}
.pane-title{font-size:.8125rem;font-weight:700;padding:.75rem 1rem;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.pane-title .helper{font-weight:400;color:var(--ink-3)}
.findings-list{flex:1;overflow-y:auto}
.finding-item{display:block;width:100%;text-align:left;padding:.65rem 1rem;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s;font-size:.8125rem}
.finding-item:hover{background:var(--surface)}
.finding-item:focus-visible{outline:2px solid var(--copper);outline-offset:-2px}
.finding-item[aria-selected="true"]{background:var(--copper-bg);border-left:3px solid var(--copper)}
.finding-item .finding-top{display:flex;align-items:center;gap:.5rem;margin-bottom:.2rem}
.finding-item .finding-title{font-weight:600;color:var(--ink)}
.finding-item .finding-path{font-family:var(--mono);font-size:.6875rem;color:var(--ink-3)}
.no-filter-results{text-align:center;padding:2rem 1rem;font-size:.875rem;color:var(--ink-3)}

/* ── Finding detail ───────────────────────────────────────────────── */
.finding-detail{background:var(--card);padding:1.25rem;overflow-y:auto;max-height:600px}
.finding-detail .helper{color:var(--ink-3);font-size:.875rem}
.detail-topline{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}
.detail-topline .mono{font-size:.6875rem;color:var(--ink-3)}
.finding-detail h3{font-size:1.125rem;font-weight:700;margin-bottom:.5rem}
.operation-line{font-size:.8125rem;color:var(--ink-2);margin-bottom:.75rem;padding:.35rem .6rem;background:var(--surface);border-radius:var(--r-sm);display:inline-block}
.finding-detail p{font-size:.875rem;color:var(--ink-2);line-height:1.6;margin-bottom:.75rem}
.finding-detail h4{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);margin-bottom:.5rem;margin-top:1rem}
.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;margin-bottom:1rem}
.evidence-grid section{background:var(--card);padding:.75rem}
.evidence-grid h5{font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);margin-bottom:.35rem;display:flex;align-items:center;gap:.35rem}
.evidence-grid h5 .helper{font-weight:500;color:var(--ink-muted);text-transform:none;letter-spacing:0}
.evidence-pointer{display:block;font-size:.6875rem;color:var(--copper);margin-bottom:.5rem;word-break:break-all}
.evidence-grid pre{font-size:.6875rem;line-height:1.6;background:var(--surface);padding:.5rem;border-radius:var(--r-sm);overflow-x:auto;max-height:160px;color:var(--ink);white-space:pre-wrap;word-break:break-word}
.checklist-heading{display:flex;justify-content:space-between;align-items:center;margin-top:1rem;margin-bottom:.5rem}
.checklist-heading h4{margin:0}
.checklist-heading .helper{font-size:.6875rem}
.test-checklist{display:flex;flex-direction:column;gap:.35rem}
.test-checklist label{display:flex;align-items:start;gap:.5rem;font-size:.8125rem;color:var(--ink-2);cursor:pointer;padding:.35rem .5rem;border-radius:var(--r-sm);transition:background .15s}
.test-checklist label:hover{background:var(--surface)}
.test-checklist input[type="checkbox"]{accent-color:var(--copper);margin-top:.2rem;flex-shrink:0}
.checklist-note{font-size:.75rem;margin-top:.5rem;font-style:italic}
.results-disclaimer{font-size:.75rem;color:var(--ink-3);line-height:1.6;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}
.results-disclaimer a{color:var(--copper);font-weight:500}

/* ── Reduced motion ───────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
  .skeleton{animation:none;background:var(--border)}
}

/* Skeleton animation */
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skeleton{animation:shimmer 1.8s ease-in-out infinite}

/* ── Visually hidden ──────────────────────────────────────────────── */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE  375 px → 1440 px
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:2rem}
  .hero-copy{padding-top:0}
  .input-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .findings-pane{max-height:300px}
  .finding-detail{max-height:none}
  .boundary-section{grid-template-columns:1fr}
  .about-layout{grid-template-columns:1fr}
  .about-statement{position:static}
  .document-layout{grid-template-columns:1fr}
  .document-nav{position:static;margin-bottom:1rem}
  .document-nav nav{flex-direction:row;flex-wrap:wrap;gap:.25rem .75rem}
  .document-nav nav a{border-left:0;padding-left:0;border-bottom:2px solid transparent}
  .coverage-table{grid-template-columns:1fr}
  .evidence-grid{grid-template-columns:1fr}
  .summary-grid{grid-template-columns:1fr 1fr}
  .band-inner{grid-template-columns:1fr;gap:1rem;text-align:left}
  .band-note{text-align:left}
}
@media (max-width:600px){
  .site-header{flex-wrap:wrap}
  .site-header nav{gap:.75rem;font-size:.8125rem}
  .nav-workspace{padding:.4rem .7rem;font-size:.8125rem}
  .summary-grid{grid-template-columns:1fr 1fr}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .filter-toolbar{flex-direction:column;align-items:stretch}
  .filter-toolbar .helper{margin-left:0}
  .section-toolbar{flex-direction:column;align-items:flex-start;gap:.5rem}
  .toolbar-actions{width:100%}
  .workspace-heading{flex-direction:column;align-items:flex-start}
  .site-footer{grid-template-columns:1fr}
  .footer-links{flex-direction:column;gap:.5rem}
  .compare-toolbar{flex-direction:column}
}

/* ── Focus visible for all interactives ───────────────────────────── */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:2px}

/* ── Print ────────────────────────────────────────────────────────── */
@media print{
  .site-header,.site-footer,.toolbar-actions,.workspace-notice,.hero-art,.skip-link{display:none}
  body{background:#fff;color:#000}
  .button{border:1px solid #000}
}