/* 4castPlannr website styles. One accent (teal, matching the charts the engine draws), cool neutrals,
   light and dark themes via prefers-color-scheme. Radius system: controls 8px, panels and figures 12px.
   Contrast pairs are measured by site/check.py. No animation beyond short color transitions. */

@font-face {
  font-family: "Public Sans";
  src: url("/fonts/public-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  /* primitives */
  --teal-50: #e1efed; --teal-600: #0b6b67; --teal-650: #09625e; --teal-700: #085754;
  --slate-25: #fcfdfd; --slate-50: #f5f7f7; --slate-100: #eaf0ef; --slate-300: #c9d4d2; --slate-500: #6c7c78;
  --slate-600: #5b6b67; --slate-700: #43534f; --slate-950: #14211f;
  /* semantic tokens (components use only these) */
  --color-bg: var(--slate-50);
  --color-surface: var(--slate-25);
  --color-sunken: var(--slate-100);
  --color-text: var(--slate-950);
  --color-text-secondary: var(--slate-700);
  --color-text-tertiary: var(--slate-600);
  --color-border: var(--slate-300);
  --color-border-control: var(--slate-500);
  --color-accent-solid: var(--teal-600);
  --color-accent-solid-hover: var(--teal-700);
  --color-accent-text: var(--teal-650);
  --color-accent-soft: var(--teal-50);
  --color-on-accent: var(--slate-25);
  --color-focus: var(--teal-600);
  --color-danger: #a3281b;
  --color-success: #1d6b3a;
  --color-chart-panel: #fcfdfd;
  --shadow-panel: 0 1px 2px rgb(20 33 31 / 0.06), 0 4px 16px rgb(20 33 31 / 0.06);
  --image-outline: oklch(0 0 0 / 0.1);

  --font-sans: "Public Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --text-xs: 0.8125rem; --text-sm: 0.9375rem; --text-base: 1rem; --text-md: 1.125rem; --text-lg: 1.25rem;
  --text-xl: 1.5rem; --text-2xl: 1.875rem; --text-3xl: clamp(2rem, 1.4rem + 2.4vw, 2.875rem);
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem; --space-5: 1.5rem;
  --space-6: 2rem; --space-7: 3rem; --space-8: 4rem; --space-9: 6rem;
  --radius-control: 8px; --radius-panel: 12px;
  --measure: 68ch;
  --container: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0e1615;
    --color-surface: #141e1d;
    --color-sunken: #1a2625;
    --color-text: #e5eeec;
    --color-text-secondary: #a8b8b5;
    --color-text-tertiary: #93a4a0;
    --color-border: #2c3b39;
    --color-border-control: #6d817d;
    --color-accent-solid: #56c2b8;
    --color-accent-solid-hover: #7dd3ca;
    --color-accent-text: #6fcfc5;
    --color-accent-soft: #183331;
    --color-on-accent: #0b1312;
    --color-focus: #7dd3ca;
    --color-danger: #f08a7c;
    --color-success: #7fd19b;
    --shadow-panel: 0 1px 2px rgb(0 0 0 / 0.3), 0 4px 16px rgb(0 0 0 / 0.25);
    --image-outline: oklch(1 0 0 / 0.1);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-numeric: tabular-nums;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 var(--space-4); text-wrap: balance; font-weight: 700; letter-spacing: -0.015em; }
h1 { font-size: var(--text-3xl); letter-spacing: -0.025em; }
h2 { font-size: var(--text-2xl); margin-top: var(--space-7); }
h3 { font-size: var(--text-lg); margin-top: var(--space-6); letter-spacing: -0.01em; }
h4 { font-size: var(--text-md); margin-top: var(--space-5); }
p, ul, ol, dl, table, figure, blockquote { margin: 0 0 var(--space-4); }
p, li { text-wrap: pretty; }
a { color: var(--color-accent-text); text-underline-offset: 0.18em; text-decoration-thickness: from-font; }
a:hover { text-decoration-thickness: 2px; }
strong { font-weight: 650; }
small, .small { font-size: var(--text-sm); }
code { font-size: 0.92em; background: var(--color-sunken); padding: 0.1em 0.35em; border-radius: 4px; }
pre { overflow-x: auto; background: var(--color-sunken); padding: var(--space-4); border-radius: var(--radius-control); font-size: var(--text-sm); }
pre code { background: none; padding: 0; }
hr { border: 0; border-top: 1px solid var(--color-border); margin: var(--space-7) 0; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; border-radius: 2px; }
::selection { background: var(--color-accent-soft); color: var(--color-text); }

.skip-link { position: absolute; left: var(--space-4); top: -100px; z-index: 100; background: var(--color-surface); color: var(--color-text); padding: var(--space-2) var(--space-4); border-radius: var(--radius-control); }
.skip-link:focus { top: var(--space-2); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--space-4); }
@media (min-width: 48rem) { .container { padding-inline: var(--space-6); } }
.prose { max-width: var(--measure); }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.table-wrap + .prose, .figure + .prose, .help + .prose, .note + .prose { margin-top: var(--space-7); }
main { display: block; padding-bottom: var(--space-8); }
section { scroll-margin-top: 5rem; }
[id] { scroll-margin-top: 5rem; }

/* Header and navigation */
.site-header { position: sticky; top: 0; z-index: 10; background: color-mix(in oklab, var(--color-bg) 92%, transparent); border-bottom: 1px solid var(--color-border); backdrop-filter: saturate(140%) blur(8px); }
@media (prefers-reduced-transparency: reduce) { .site-header { background: var(--color-bg); backdrop-filter: none; } }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: 4rem; }
.brand { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: 750; font-size: 1.125rem; letter-spacing: -0.02em; color: var(--color-text); text-decoration: none; }
.brand-mark { width: 1.375rem; height: 1.375rem; flex: none; }
.nav-desktop { display: none; }
.nav-desktop ul, .nav-mobile ul { list-style: none; margin: 0; padding: 0; }
.nav-desktop ul { display: flex; align-items: center; gap: var(--space-5); }
.nav-desktop a { color: var(--color-text-secondary); text-decoration: none; font-size: var(--text-sm); font-weight: 550; white-space: nowrap; padding-block: var(--space-2); }
.nav-desktop a:hover, .nav-desktop a[aria-current="page"] { color: var(--color-text); }
.nav-desktop .btn-primary, .nav-desktop .btn-primary:hover { color: var(--color-on-accent); padding-block: 0.5rem; }
.nav-desktop a[aria-current="page"] { text-decoration: underline; text-underline-offset: 0.5em; text-decoration-thickness: 2px; text-decoration-color: var(--color-accent-solid); }
.nav-mobile summary { list-style: none; cursor: pointer; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border-control); border-radius: var(--radius-control); font-weight: 600; font-size: var(--text-sm); min-height: 44px; display: inline-flex; align-items: center; }
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile[open] summary { background: var(--color-sunken); }
.nav-mobile .nav-panel { position: absolute; left: 0; right: 0; top: 100%; background: var(--color-surface); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-panel); padding: var(--space-3) var(--space-4) var(--space-5); }
.nav-mobile .nav-panel a { display: block; padding: var(--space-3) 0; color: var(--color-text); text-decoration: none; font-weight: 550; border-bottom: 1px solid var(--color-border); }
.nav-mobile .nav-panel li:last-child a { border-bottom: 0; }
.nav-mobile .nav-panel .btn { margin-top: var(--space-4); width: 100%; }
@media (min-width: 62rem) {
  .nav-desktop { display: flex; align-items: center; gap: var(--space-5); }
  .nav-mobile { display: none; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: 44px; padding: 0.625rem 1.125rem; border-radius: var(--radius-control); font: inherit; font-weight: 650; font-size: var(--text-base); line-height: 1.2; text-decoration: none; white-space: nowrap; cursor: pointer; border: 1px solid transparent; transition-property: background-color, border-color, color; transition-duration: 150ms; }
.btn:active { scale: 0.96; }
@media (prefers-reduced-motion: reduce) { .btn:active { scale: none; } }
.btn-primary { background: var(--color-accent-solid); color: var(--color-on-accent); }
.btn-primary:hover { background: var(--color-accent-solid-hover); color: var(--color-on-accent); }
.btn-secondary { background: transparent; color: var(--color-text); border-color: var(--color-border-control); }
.btn-secondary:hover { background: var(--color-sunken); }
.btn-small { min-height: 40px; padding: 0.5rem 0.875rem; font-size: var(--text-sm); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.7; cursor: progress; }
.actions { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; margin-top: var(--space-5); }
.text-link { font-weight: 600; }

/* Page intro: every page opens with a short, quotable answer */
.page-intro { padding-block: var(--space-7) var(--space-5); }
.page-intro h1 { max-width: 24ch; }
.answer { font-size: var(--text-lg); line-height: 1.55; color: var(--color-text); max-width: 62ch; }
.breadcrumbs { font-size: var(--text-sm); color: var(--color-text-tertiary); margin-bottom: var(--space-4); }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2); padding: 0; margin: 0; }
.breadcrumbs li + li::before { content: "/"; margin-inline-end: var(--space-2); color: var(--color-text-tertiary); }
.breadcrumbs a { color: var(--color-text-secondary); }
.meta-line { color: var(--color-text-tertiary); font-size: var(--text-sm); }

/* Home hero */
.hero { padding-block: var(--space-7) var(--space-8); }
.hero-grid { display: grid; gap: var(--space-7); align-items: center; }
.hero h1 { font-size: clamp(2.25rem, 1.5rem + 3vw, 3.5rem); letter-spacing: -0.03em; max-width: 16ch; }
.hero .answer { font-size: var(--text-lg); color: var(--color-text-secondary); max-width: 34ch; }
@media (min-width: 62rem) { .hero-grid { grid-template-columns: 5fr 6fr; } .hero { padding-top: var(--space-8); } }

/* Figures: engine charts and report screenshots always sit on a light panel, in both themes */
.figure { margin: var(--space-6) 0; }
.figure-frame { background: var(--color-chart-panel); border-radius: var(--radius-panel); padding: var(--space-3); box-shadow: var(--shadow-panel); }
.figure-frame img { border-radius: calc(var(--radius-panel) - var(--space-3)); outline: 1px solid var(--image-outline); outline-offset: -1px; width: 100%; }
.figure-frame.document { padding: 0; overflow: hidden; }
.figure-frame.document img { border-radius: var(--radius-panel); outline: none; }
.figure figcaption { font-size: var(--text-sm); color: var(--color-text-secondary); margin-top: var(--space-3); max-width: var(--measure); }
.figure-wide { max-width: none; }

/* Sections on long pages */
.band { padding-block: var(--space-8); }
.band-sunken { background: var(--color-sunken); }
.band h2:first-child { margin-top: 0; }
.lead-in { font-size: var(--text-md); color: var(--color-text-secondary); max-width: 60ch; }

/* How it works (verbs, not numbered stages) */
.flow { display: grid; gap: var(--space-6); counter-reset: none; padding: 0; list-style: none; margin: var(--space-6) 0 0; }
.flow li { padding-top: var(--space-4); border-top: 2px solid var(--color-accent-solid); }
.flow h3 { margin-top: 0; font-size: var(--text-xl); }
.flow p { color: var(--color-text-secondary); margin: 0; }
@media (min-width: 48rem) { .flow:not(.flow-stacked) { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); } }
.flow-stacked { margin-top: 0; gap: var(--space-5); }
.flow-stacked li { border-top-width: 1px; border-top-color: var(--color-border); padding-top: var(--space-5); }
.flow-stacked li:first-child { border-top: 2px solid var(--color-accent-solid); }

/* Use case grid: one featured tile plus four, each with a real chart */
.uc-grid { display: grid; gap: var(--space-5); margin-top: var(--space-6); }
.uc { display: flex; flex-direction: column; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-panel); overflow: hidden; color: inherit; text-decoration: none; transition-property: border-color; transition-duration: 150ms; }
.uc:hover { border-color: var(--color-accent-solid); }
.uc img { background: var(--color-chart-panel); width: 100%; aspect-ratio: 16 / 7; object-fit: cover; object-position: left top; border-bottom: 1px solid var(--color-border); }
.uc-body { padding: var(--space-4) var(--space-5) var(--space-5); }
.uc h3 { margin: 0 0 var(--space-2); font-size: var(--text-lg); color: var(--color-text); }
.uc p { margin: 0; color: var(--color-text-secondary); font-size: var(--text-sm); }
.uc .uc-who { font-size: var(--text-xs); font-weight: 650; color: var(--color-accent-text); margin-bottom: var(--space-2); }
@media (min-width: 48rem) { .uc-grid { grid-template-columns: repeat(2, 1fr); } .uc-featured { grid-column: span 2; } .uc-featured img { aspect-ratio: 16 / 6; } }
@media (min-width: 62rem) {
  .uc-grid { grid-template-columns: repeat(4, 1fr); }
  .uc-featured { grid-column: 1 / -1; grid-row: auto; flex-direction: row; }
  .uc-featured img { width: 62%; aspect-ratio: 16 / 7; object-fit: cover; object-position: left top; border-bottom: 0; border-right: 1px solid var(--color-border); }
  .uc-featured .uc-body { align-self: center; padding: var(--space-6); }
  .uc-featured h3 { font-size: var(--text-xl); }
  .uc-featured p { font-size: var(--text-base); }
}

/* Proof numbers */
.stats { display: grid; gap: var(--space-5); margin: var(--space-6) 0; padding: 0; list-style: none; }
.stats li { border-left: 3px solid var(--color-accent-solid); padding-left: var(--space-4); }
.stat-value { display: block; font-size: var(--text-2xl); font-weight: 750; letter-spacing: -0.02em; line-height: 1.1; }
.stat-label { display: block; color: var(--color-text-secondary); font-size: var(--text-sm); margin-top: var(--space-2); max-width: 32ch; }
@media (min-width: 48rem) { .stats { grid-template-columns: repeat(3, 1fr); } }

/* Split: text next to a figure */
.split { display: grid; gap: var(--space-6); align-items: start; }
@media (min-width: 62rem) { .split { grid-template-columns: 1fr 1fr; gap: var(--space-8); } .split-reverse > :first-child { order: 2; } }

/* Callouts */
.note { background: var(--color-sunken); border-radius: var(--radius-panel); padding: var(--space-4) var(--space-5); margin: var(--space-5) 0; max-width: var(--measure); }
.note p:last-child, .note ul:last-child { margin-bottom: 0; }
.note-title { font-weight: 700; margin-bottom: var(--space-2); }
.note-example { background: var(--color-accent-soft); }
.draft-banner { background: var(--color-accent-soft); border: 1px solid var(--color-accent-solid); border-radius: var(--radius-panel); padding: var(--space-4) var(--space-5); margin-bottom: var(--space-6); font-weight: 600; }
blockquote.request { margin: var(--space-5) 0; padding: var(--space-4) var(--space-5); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-panel); font-size: var(--text-md); max-width: var(--measure); }
blockquote.request p { margin: 0; }
blockquote.request footer { margin-top: var(--space-2); font-size: var(--text-sm); color: var(--color-text-tertiary); }
.plain-answer { font-size: var(--text-md); font-weight: 550; max-width: var(--measure); }

/* Tables */
.table-wrap { overflow-x: auto; margin: var(--space-5) 0; border: 1px solid var(--color-border); border-radius: var(--radius-panel); background: var(--color-surface); }
.table-wrap:focus-visible { outline-offset: 2px; }
table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); margin: 0; }
caption { text-align: start; padding: var(--space-3) var(--space-4); font-weight: 650; color: var(--color-text); font-size: var(--text-sm); }
th, td { text-align: start; padding: var(--space-3) var(--space-4); vertical-align: top; }
thead th { font-weight: 650; color: var(--color-text-secondary); border-bottom: 1px solid var(--color-border); white-space: nowrap; background: var(--color-sunken); }
tbody tr + tr td, tbody tr + tr th { border-top: 1px solid var(--color-border); }
td.num, th.num { text-align: end; white-space: nowrap; }
.cell-note { display: block; font-weight: 400; font-size: var(--text-xs); color: var(--color-text-tertiary); margin-top: var(--space-1); }
.table-compact th, .table-compact td { padding: var(--space-3); }
.table-compact tbody th { min-width: 13rem; }
tr.is-selected td, tr.is-selected th { font-weight: 650; }
.tag { display: inline-block; font-size: var(--text-xs); font-weight: 650; padding: 0.1rem 0.5rem; border-radius: 999px; background: var(--color-sunken); color: var(--color-text-secondary); white-space: nowrap; }
.tag-good { background: var(--color-accent-soft); color: var(--color-accent-text); }
.tag-warn { background: color-mix(in oklab, var(--color-danger) 14%, var(--color-surface)); color: var(--color-danger); }
.neg { color: var(--color-danger); font-weight: 650; }
.pos { color: var(--color-success); font-weight: 650; }

/* Lists of links (case studies, related) */
.link-list { list-style: none; padding: 0; margin: var(--space-5) 0; display: grid; gap: var(--space-4); }
.link-list li { padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border); }
.link-list a { font-weight: 650; font-size: var(--text-md); }
.link-list p { margin: var(--space-1) 0 0; color: var(--color-text-secondary); font-size: var(--text-sm); max-width: var(--measure); }
@media (min-width: 62rem) { .link-list.two-col { grid-template-columns: 1fr 1fr; column-gap: var(--space-7); } }
.case-cards { display: grid; gap: var(--space-5); margin: var(--space-6) 0; padding: 0; list-style: none; }
.case-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-panel); overflow: hidden; display: flex; flex-direction: column; }
.case-card img { background: var(--color-chart-panel); aspect-ratio: 16 / 7; object-fit: cover; object-position: left top; border-bottom: 1px solid var(--color-border); width: 100%; }
.case-card .body { padding: var(--space-4) var(--space-5) var(--space-5); }
.case-card h3 { margin: 0 0 var(--space-2); font-size: var(--text-md); }
.case-card h3 a { color: var(--color-text); text-decoration: none; }
.case-card h3 a::after { content: ""; position: absolute; inset: 0; }
.case-card { position: relative; }
.case-card:hover { border-color: var(--color-accent-solid); }
.case-card p { margin: 0; font-size: var(--text-sm); color: var(--color-text-secondary); }
.case-card .facts { margin-top: var(--space-3); font-size: var(--text-xs); color: var(--color-text-tertiary); }
@media (min-width: 48rem) { .case-cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 72rem) { .case-cards { grid-template-columns: repeat(3, 1fr); } }

/* FAQ */
.faq { max-width: var(--measure); margin: var(--space-5) 0; }
.faq details { border-bottom: 1px solid var(--color-border); }
.faq summary { cursor: pointer; padding: var(--space-4) var(--space-6) var(--space-4) 0; font-weight: 650; font-size: var(--text-md); list-style: none; position: relative; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: var(--space-2); top: var(--space-4); font-weight: 400; font-size: 1.25rem; line-height: 1; color: var(--color-text-tertiary); }
.faq details[open] summary::after { content: "\2212"; }
.faq .faq-answer { padding-bottom: var(--space-4); color: var(--color-text-secondary); }
.faq .faq-answer p:last-child { margin-bottom: 0; }
.faq-group h2 { font-size: var(--text-xl); }

/* Forms */
.form-panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-panel); padding: var(--space-5); box-shadow: var(--shadow-panel); }
@media (min-width: 48rem) { .form-panel { padding: var(--space-6); } }
.form-panel h2, .form-panel h3 { margin-top: 0; margin-bottom: var(--space-2); }
.form-panel > .help:first-of-type { margin-bottom: var(--space-5); }
.field { display: grid; gap: var(--space-2); margin-bottom: var(--space-5); }
.field label, .field legend { font-weight: 650; font-size: var(--text-sm); }
.field .optional { font-weight: 400; color: var(--color-text-tertiary); }
.help { font-size: var(--text-sm); color: var(--color-text-secondary); margin: 0; }
.error-text { font-size: var(--text-sm); color: var(--color-danger); font-weight: 600; margin: 0; }
.error-text:empty { display: none; }
input[type="text"], input[type="email"], textarea, select { width: 100%; font: inherit; font-size: 1rem; color: var(--color-text); background: var(--color-bg); border: 1px solid var(--color-border-control); border-radius: var(--radius-control); padding: 0.625rem 0.75rem; min-height: 44px; }
textarea { min-height: 7.5rem; resize: vertical; line-height: 1.5; }
input[type="file"] { font: inherit; font-size: var(--text-sm); color: var(--color-text-secondary); width: 100%; padding: var(--space-3); border: 1px dashed var(--color-border-control); border-radius: var(--radius-control); background: var(--color-bg); min-height: 44px; }
input[type="file"]::file-selector-button { font: inherit; font-weight: 650; margin-inline-end: var(--space-3); padding: 0.5rem 0.875rem; border-radius: var(--radius-control); border: 1px solid var(--color-border-control); background: var(--color-surface); color: var(--color-text); cursor: pointer; }
[aria-invalid="true"] { border-color: var(--color-danger) !important; border-style: solid !important; }
.check { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-sm); }
.check input { width: 1.25rem; height: 1.25rem; margin-top: 0.15rem; accent-color: var(--color-accent-solid); flex: none; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin-top: var(--space-4); }
.form-status:empty { display: none; }
.form-status .ok, .form-status .bad { border-radius: var(--radius-panel); padding: var(--space-4) var(--space-5); }
.form-status .ok { background: var(--color-accent-soft); }
.form-status .bad { background: color-mix(in oklab, var(--color-danger) 12%, var(--color-surface)); color: var(--color-text); }
.start-grid { display: grid; gap: var(--space-6); align-items: start; }
@media (min-width: 62rem) { .start-grid { grid-template-columns: 7fr 5fr; gap: var(--space-8); } }
.next-steps { list-style: none; padding: 0; margin: 0 0 var(--space-5); display: grid; gap: var(--space-4); }
.next-steps li { padding-left: var(--space-4); border-left: 2px solid var(--color-border); }
.next-steps strong { display: block; }
.problem-list li:target { background: var(--color-accent-soft); outline: 2px solid var(--color-accent-solid); border-radius: var(--radius-control); padding: var(--space-2) var(--space-3); }

/* Pricing */
.offer { display: grid; gap: var(--space-6); margin: var(--space-6) 0; }
@media (min-width: 62rem) { .offer { grid-template-columns: 1fr 1fr; } }
.offer-card { border-radius: var(--radius-panel); padding: var(--space-6); border: 1px solid var(--color-border); background: var(--color-surface); }
.offer-card.featured { border: 2px solid var(--color-accent-solid); }
.offer-card h2 { margin-top: 0; font-size: var(--text-xl); }
.offer-price { font-size: var(--text-2xl); font-weight: 750; letter-spacing: -0.02em; margin-bottom: var(--space-3); }
.offer-unit { font-size: var(--text-base); font-weight: 500; color: var(--color-text-secondary); letter-spacing: 0; }
.offer-card ul { padding-left: 1.25rem; color: var(--color-text-secondary); }

/* How it works: an ordered sequence, so numbers are meaningful here */
.how-steps { list-style: none; padding: 0; margin: 0 0 var(--space-6); display: grid; gap: var(--space-6); max-width: var(--measure); counter-reset: step; }
.how-steps li { counter-increment: step; padding-left: 3.25rem; position: relative; }
.how-steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 2.25rem; height: 2.25rem; border-radius: 999px; background: var(--color-accent-soft); color: var(--color-accent-text); font-weight: 700; display: grid; place-items: center; }
.how-steps h2 { margin-top: 0.25rem; font-size: var(--text-xl); }
.how-steps p:last-child { margin-bottom: 0; color: var(--color-text-secondary); }
.h3 { font-size: var(--text-lg); }
dl dt { font-weight: 650; margin-top: var(--space-4); }
dl dd { margin: var(--space-1) 0 0; color: var(--color-text-secondary); }

/* Footer */
.site-footer { border-top: 1px solid var(--color-border); padding-block: var(--space-7) var(--space-6); font-size: var(--text-sm); color: var(--color-text-secondary); background: var(--color-surface); }
.footer-grid { display: grid; gap: var(--space-6); grid-template-columns: repeat(2, 1fr); }
@media (min-width: 62rem) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-grid h2 { font-size: var(--text-sm); margin: 0 0 var(--space-3); color: var(--color-text); letter-spacing: 0; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-2); }
.footer-grid a { color: var(--color-text-secondary); text-decoration: none; }
.footer-grid a:hover { color: var(--color-text); text-decoration: underline; }
.footer-about { grid-column: 1 / -1; max-width: 40ch; }
@media (min-width: 62rem) { .footer-about { grid-column: auto; } }
.footer-legal { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--color-border); font-size: var(--text-xs); color: var(--color-text-tertiary); }

@media (hover: none) { .uc:hover, .case-card:hover { border-color: var(--color-border); } }
@media print { .site-header, .site-footer, .actions, .form-panel { display: none; } body { background: #fff; color: #000; } }

/* Public beta badge and hero line */
.beta-badge { display: inline-flex; align-items: center; margin-inline-start: var(--space-2, 0.5rem); margin-inline-end: auto; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: var(--text-xs, 0.75rem); font-weight: 650; letter-spacing: 0.02em; text-decoration: none; color: var(--color-accent-text); background: var(--color-accent-soft, #e3f2f0); border: 1px solid currentColor; white-space: nowrap; }
.beta-badge:hover { text-decoration: underline; }
.beta-line { display: inline-flex; flex-wrap: wrap; gap: 0.35rem 0.6rem; align-items: center; margin-block-end: var(--space-4, 1rem); padding: 0.35rem 0.8rem; border-radius: 999px; font-size: var(--text-sm, 0.875rem); background: var(--color-accent-soft, #e3f2f0); color: var(--color-text, inherit); }
.beta-line .spots { font-weight: 650; color: var(--color-accent-text); }
.beta-line .spots::before { content: "\00B7"; margin-inline-end: 0.6rem; font-weight: 400; color: var(--color-text-secondary, inherit); }

/* Demo page */
.demo-toc ul { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); list-style: none; padding: 0; margin: var(--space-4) 0 0; }
.demo-case { padding-block: var(--space-7); border-top: 1px solid var(--color-border); }
.demo-panel { margin: var(--space-5) 0; padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-panel); background: var(--color-surface); }
.demo-panel-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--space-3); }
.demo-panel-head h3 { margin: 0; }
.demo-switch { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); }
.demo-switch select { min-height: 40px; padding: 0.3rem 0.5rem; border: 1px solid var(--color-border-control); border-radius: 8px; background: var(--color-surface); color: var(--color-text); font: inherit; }
.demo-figure { margin: var(--space-4) 0 0; }
.demo-figure figcaption { font-size: var(--text-sm); color: var(--color-text-secondary); }
.demo-chart { display: block; width: 100%; height: auto; }
.demo-chart .grid { stroke: var(--color-border); stroke-width: 1; }
.demo-chart .axis { fill: var(--color-text-tertiary); font-size: 11px; }
.demo-chart .hist { fill: none; stroke: var(--color-text); stroke-width: 1.6; }
.demo-chart .fc { fill: none; stroke: var(--color-accent-solid); stroke-width: 2.2; }
.demo-chart .band { fill: var(--color-accent-solid); opacity: 0.16; }
.demo-chart .actual { fill: none; stroke: var(--color-text); stroke-width: 1.4; stroke-dasharray: 2 3; }
.demo-chart .cutoff { stroke: var(--color-text-tertiary); stroke-width: 1; stroke-dasharray: 4 4; }
.demo-chart .cutoff-label { fill: var(--color-text-tertiary); font-size: 11px; }
.demo-chart .hit { fill: transparent; }
.demo-chart .crosshair { stroke: var(--color-accent-text); stroke-width: 1; }
.demo-readout { min-height: 1.5em; margin: var(--space-2) 0 0; font-size: var(--text-sm); font-variant-numeric: tabular-nums; }
.is-winner th, .is-winner td { font-weight: 650; }
.tag { display: inline-block; margin-inline-start: 0.4rem; padding: 0 0.45rem; border-radius: 999px; font-size: var(--text-xs, 0.75rem); background: var(--color-accent-soft); color: var(--color-accent-text); }
.plan-headline { font-size: var(--text-lg); }
.cta-band { margin: var(--space-7) 0; padding: var(--space-6); border-radius: var(--radius-panel); background: var(--color-accent-soft); text-align: center; }
.cta-band p { max-width: 60ch; margin-inline: auto; }