/* Layout concept: an auditor's workpaper — cool ruled paper, control IDs in mono, tickmarks for status. One accent (ultramarine), one status green. */
:root {
  --paper: #F3F5F8;
  --surface: #FFFFFF;
  --ink: #111A2E;
  --ink-2: #4A546B;
  --rule: #D5DBE5;
  --accent: #2D47D2;
  --accent-hover: #2239B0;
  --accent-ink: #FFFFFF;
  --wash: #E7EBFA;
  --tick: #1C7F57;
  --tick-wash: #DFF1E8;
  --warn: #9A5B00;
  --warn-wash: #FBEFD9;

  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body: "Public Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --s-xs: .8125rem;
  --s-sm: .9375rem;
  --s-md: 1.0625rem;
  --s-lg: 1.3125rem;
  --s-xl: 1.75rem;
  --s-2xl: clamp(2rem, 4.2vw, 2.75rem);
  --s-3xl: clamp(2.375rem, 5.6vw, 3.875rem);

  --radius: 10px;
  --max: 1160px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0C111E; --surface: #141B2C; --ink: #E7EBF4; --ink-2: #A2ACC1; --rule: #262F46;
    --accent: #8C9DFF; --accent-hover: #A9B6FF; --accent-ink: #0C111E; --wash: #1A2244;
    --tick: #55C892; --tick-wash: #12301F; --warn: #E9B25A; --warn-wash: #33260F;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0C111E; --surface: #141B2C; --ink: #E7EBF4; --ink-2: #A2ACC1; --rule: #262F46;
  --accent: #8C9DFF; --accent-hover: #A9B6FF; --accent-ink: #0C111E; --wash: #1A2244;
  --tick: #55C892; --tick-wash: #12301F; --warn: #E9B25A; --warn-wash: #33260F;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--s-md);
  line-height: 1.65;
}
img { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.12; letter-spacing: -0.02em; text-wrap: balance; margin: 0; font-weight: 700; }
h1 { font-size: var(--s-3xl); }
h2 { font-size: var(--s-2xl); }
h3 { font-size: var(--s-lg); letter-spacing: -0.01em; }
p { margin: 0; }
code, .mono { font-family: var(--f-mono); font-size: .88em; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 720px) {
  .wrap { padding-left: max(32px, env(safe-area-inset-left, 0px)); padding-right: max(32px, env(safe-area-inset-right, 0px)); }
}

/* Header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper); }
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand:hover { color: var(--ink); }
.brand svg { flex: none; }
.brand .tld { color: var(--ink-2); font-weight: 500; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { text-decoration: none; color: var(--ink-2); font-size: var(--s-sm); font-weight: 500; padding: 8px 12px; border-radius: 8px; }
.nav a:hover { color: var(--ink); background: var(--wash); }
.nav a[aria-current="page"] { color: var(--ink); }
.nav .btn { margin-left: 8px; }
.menu-btn { display: none; background: none; border: 1px solid var(--rule); color: var(--ink); border-radius: 8px; padding: 8px 12px; font: 500 var(--s-sm) var(--f-body); cursor: pointer; }
@media (max-width: 860px) {
  .menu-btn { display: inline-flex; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--rule);
    padding: 8px max(16px, env(safe-area-inset-right, 0px)) 16px max(16px, env(safe-area-inset-left, 0px)); }
  .nav.open { display: flex; }
  .nav a { padding: 12px 8px; }
  .nav .btn { margin: 8px 0 0; justify-content: center; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font: 600 var(--s-sm) var(--f-body); border-radius: 8px; padding: 11px 18px; border: 1px solid transparent; cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-hover); color: var(--accent-ink); }
.btn-ghost { border-color: var(--rule); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--ink-2); color: var(--ink); }
.nav .btn-primary, .nav .btn-primary:hover { color: var(--accent-ink); }

/* Sections */
.section { padding-block: clamp(56px, 8vw, 96px); }
.section + .section { border-top: 1px solid var(--rule); }
.eyebrow { font-family: var(--f-mono); font-size: var(--s-xs); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); font-weight: 500; }
.lede { font-size: var(--s-lg); color: var(--ink-2); line-height: 1.55; max-width: 60ch; }
.sec-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 40px; }
.sec-head p { color: var(--ink-2); max-width: 62ch; }

/* Hero */
.hero { padding-block: clamp(48px, 7vw, 88px) clamp(56px, 8vw, 96px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero-copy { display: grid; gap: 22px; min-width: 0; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.hero-note { font-size: var(--s-sm); color: var(--ink-2); }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }

/* Workpaper card */
.workpaper { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: 0 1px 0 var(--rule), 0 18px 40px -24px color-mix(in srgb, var(--ink) 40%, transparent); overflow: hidden; min-width: 0; }
.wp-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--rule); font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); flex-wrap: wrap; }
.wp-head strong { color: var(--ink); font-weight: 600; }
.wp-row { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 11px 18px; border-bottom: 1px dashed var(--rule); font-size: var(--s-sm); }
.wp-row:last-of-type { border-bottom: 0; }
.wp-id { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); }
.wp-foot { padding: 14px 18px; border-top: 1px solid var(--rule); display: grid; gap: 8px; }
.wp-bar { height: 8px; border-radius: 99px; background: var(--wash); overflow: hidden; }
.wp-bar span { display: block; height: 100%; background: var(--tick); border-radius: 99px; }
.wp-foot small { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); display: flex; justify-content: space-between; gap: 8px; }

.pill { display: inline-flex; align-items: center; gap: 6px; font-family: var(--f-mono); font-size: .72rem; font-weight: 500; padding: 3px 9px; border-radius: 99px; white-space: nowrap; }
.pill-ok { background: var(--tick-wash); color: var(--tick); }
.pill-gap { background: var(--warn-wash); color: var(--warn); }
.pill-todo { background: var(--wash); color: var(--accent); }

/* Grids */
.grid { display: grid; gap: 20px; }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) { .g-3 { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .g-2 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 26px; display: grid; gap: 12px; align-content: start; min-width: 0; }
.card p { color: var(--ink-2); font-size: var(--s-sm); }
.card .meta { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); }
a.card { text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--accent); color: var(--ink); }
a.card .more { color: var(--accent); font-weight: 600; font-size: var(--s-sm); }

/* Process timeline (a real sequence) */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0; counter-reset: step; }
.steps li { position: relative; padding: 0 20px 0 0; display: grid; gap: 10px; align-content: start; counter-increment: step; min-width: 0; }
.steps li::before { content: counter(step); font-family: var(--f-mono); font-size: var(--s-xs); font-weight: 600; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; border: 1.5px solid var(--accent); color: var(--accent); background: var(--paper); position: relative; z-index: 1; }
.steps li::after { content: ""; position: absolute; top: 15px; left: 30px; right: 0; height: 1.5px; background: var(--rule); }
.steps li:last-child::after { display: none; }
.steps h3 { font-size: 1.0625rem; }
.steps p { font-size: var(--s-sm); color: var(--ink-2); }
.steps .dur { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); }
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .steps li { grid-template-columns: 30px minmax(0, 1fr); column-gap: 16px; padding: 0; }
  .steps li > * { grid-column: 2; }
  .steps li::before { grid-row: 1 / span 3; grid-column: 1; }
  .steps li::after { top: 30px; bottom: -26px; left: 14px; right: auto; width: 1.5px; height: auto; }
}

/* Callout */
.callout { border: 1px solid var(--rule); background: var(--surface); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 8px; }
.callout strong { font-family: var(--f-display); font-size: var(--s-md); }
.callout p { color: var(--ink-2); font-size: var(--s-sm); }

/* CTA band */
.cta-band { background: var(--ink); color: var(--paper); }
.cta-band .wrap { padding-block: clamp(48px, 7vw, 80px); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.cta-band h2 { color: var(--paper); max-width: 22ch; }
.cta-band p { color: color-mix(in srgb, var(--paper) 75%, var(--ink)); margin-top: 10px; max-width: 52ch; }
.cta-band .btn-primary { background: var(--paper); color: var(--ink); }
.cta-band .btn-primary:hover { background: var(--wash); color: var(--ink); }

/* Long-form article */
.article-head { padding-block: clamp(40px, 6vw, 72px) 32px; border-bottom: 1px solid var(--rule); }
.article-head .wrap > div { max-width: 780px; display: grid; gap: 16px; }
.crumbs { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); }
.crumbs a { color: var(--ink-2); }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 56px; padding-block: 48px 80px; }
@media (max-width: 960px) { .article-layout { grid-template-columns: 1fr; } .toc { display: none; } }
.prose { max-width: 68ch; min-width: 0; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: var(--s-xl); margin-top: 2em; scroll-margin-top: 90px; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .4em; }
.prose blockquote { margin-left: 0; padding: 14px 20px; border-left: 3px solid var(--accent); background: var(--wash); border-radius: 0 8px 8px 0; color: var(--ink); }
.toc { position: sticky; top: 96px; align-self: start; font-size: var(--s-sm); display: grid; gap: 10px; }
.toc strong { font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); font-weight: 500; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--accent); }
.toc .callout { margin-top: 16px; }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: var(--s-sm); }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: var(--f-mono); font-size: var(--s-xs); font-weight: 500; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); background: var(--paper); }
tr:last-child td { border-bottom: 0; }
td.id { font-family: var(--f-mono); font-size: var(--s-xs); white-space: nowrap; color: var(--accent); }
td.num { font-variant-numeric: tabular-nums; text-align: right; }

/* Services */
.svc { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); overflow: hidden; }
.svc + .svc { margin-top: 24px; }
.svc-main { padding: 32px; display: grid; gap: 14px; align-content: start; }
.svc-main p { color: var(--ink-2); }
.svc-side { padding: 32px; background: var(--paper); border-left: 1px solid var(--rule); display: grid; gap: 12px; align-content: start; }
.svc-side h4 { margin: 0; font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); font-weight: 500; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: var(--s-sm); }
.ticks li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; }
.ticks li::before { content: ""; width: 14px; height: 14px; margin-top: 5px; background: var(--tick); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M2 8.5l4 4L14 3.5' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M2 8.5l4 4L14 3.5' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat; }
.svc-tag { display: flex; flex-wrap: wrap; gap: 8px; }
@media (max-width: 820px) { .svc { grid-template-columns: 1fr; } .svc-side { border-left: 0; border-top: 1px solid var(--rule); } }

/* Checklist tool */
.tool { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; align-items: start; padding-block: 40px 80px; }
@media (max-width: 960px) { .tool { grid-template-columns: 1fr; } }
.cl-group { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.cl-group + .cl-group { margin-top: 20px; }
.cl-group > header { padding: 16px 20px; border-bottom: 1px solid var(--rule); display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.cl-group > header h3 { font-size: var(--s-md); }
.cl-group > header span { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); }
.cl-item { display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; gap: 14px; padding: 14px 20px; border-bottom: 1px dashed var(--rule); cursor: pointer; align-items: start; }
.cl-item:last-child { border-bottom: 0; }
.cl-item:hover { background: var(--paper); }
.cl-item input { width: 18px; height: 18px; margin: 3px 0 0; accent-color: var(--tick); cursor: pointer; }
.cl-item .t { font-weight: 600; font-size: var(--s-sm); }
.cl-item .d { color: var(--ink-2); font-size: var(--s-sm); margin-top: 2px; }
.cl-item .wp-id { padding-top: 3px; }
.score { position: sticky; top: 96px; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 24px; display: grid; gap: 16px; }
.score-num { font-family: var(--f-display); font-size: 3.5rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.score-num small { font-size: 1.25rem; color: var(--ink-2); font-weight: 500; }
.score-verdict { font-weight: 600; }
.score p { color: var(--ink-2); font-size: var(--s-sm); }
.score .wp-bar { height: 10px; }
.area-list { display: grid; gap: 8px; font-size: var(--s-sm); }
.area-list div { display: flex; justify-content: space-between; gap: 8px; }
.area-list span:last-child { font-family: var(--f-mono); font-size: var(--s-xs); color: var(--ink-2); font-variant-numeric: tabular-nums; }
.link-btn { background: none; border: 0; padding: 0; color: var(--ink-2); font: inherit; font-size: var(--s-xs); text-decoration: underline; cursor: pointer; justify-self: start; }

/* About */
.creds { display: flex; flex-wrap: wrap; gap: 8px; }
.cred { font-family: var(--f-mono); font-size: var(--s-xs); padding: 6px 12px; border: 1px solid var(--rule); border-radius: 6px; background: var(--surface); }
.about-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); gap: 56px; align-items: start; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

/* Forms */
.form { display: grid; gap: 18px; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 28px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: var(--s-sm); }
.field .hint { font-size: var(--s-xs); color: var(--ink-2); }
.field input, .field select, .field textarea { font: inherit; font-size: var(--s-sm); color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: 11px 12px; width: 100%; }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form-status { font-size: var(--s-sm); padding: 12px 14px; border-radius: 8px; background: var(--tick-wash); color: var(--tick); }
.form-status.err { background: var(--warn-wash); color: var(--warn); }
.copy-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.copy-row code { font-size: var(--s-sm); padding: 8px 12px; background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; user-select: all; }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); padding-block: 48px; font-size: var(--s-sm); color: var(--ink-2); }
.site-footer .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); gap: 32px; }
.site-footer h4 { margin: 0 0 10px; font-family: var(--f-mono); font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .08em; font-weight: 500; color: var(--ink); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.site-footer a { color: var(--ink-2); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .fine { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 20px; font-size: var(--s-xs); display: grid; gap: 6px; }
@media (max-width: 720px) { .site-footer .wrap { grid-template-columns: 1fr 1fr; } .site-footer .wrap > :first-child { grid-column: 1 / -1; } }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }