@font-face { font-family: "IBM Plex Sans"; src: url("/assets/ibm-plex-sans-400-64251e64.woff2") format("woff2"); font-style: normal; font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/assets/ibm-plex-sans-500-290aaea2.woff2") format("woff2"); font-style: normal; font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/assets/ibm-plex-sans-600-99b2fa32.woff2") format("woff2"); font-style: normal; font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/assets/ibm-plex-mono-400-c9c3574e.woff2") format("woff2"); font-style: normal; font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/assets/ibm-plex-mono-500-690bf350.woff2") format("woff2"); font-style: normal; font-weight: 500; font-display: swap; }

:root {
  --bg: #FFFFFF;
  --surface: #fafbfd;
  --surface-subtle: #edf1f7;
  --ink: #121821;
  --ink-soft: #394657;
  --muted: #566579;
  --faint: #5b6879;
  --line: #ccd4df;
  --line-strong: #7a899d;
  --accent: #2457d6;
  --accent-dark: #183d9a;
  --accent-soft: #e6ecfb;
  --accent-ink: #f7f9fc;
  --feature-bg: #183d9a;
  --feature-ink: #f4f7fc;
  --feature-muted: #c8d7f5;
  --feature-line: #6f8fdc;
  --inverse-button-bg: #f4f6f8;
  --inverse-button-hover: #fafbfd;
  --inverse-button-ink: #183d9a;
  --warning: #74551a;
  --warning-bg: #f6eed8;
  --error: #9b2c25;
  --error-bg: #f8e7e4;
  --code: #101925;
  --code-text: #e8edf5;
  --code-muted: #a4b0bf;
  --code-accent: #91b0ff;
  --code-accent-strong: #c3d2ff;
  --code-line: #3c4b60;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --container: 1248px;
  --pad: 48px;
  --control-radius: 3px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b111a;
    --surface: #121b27;
    --surface-subtle: #172231;
    --ink: #e8edf5;
    --ink-soft: #c4cfdd;
    --muted: #a3b0c0;
    --faint: #93a2b5;
    --line: #334154;
    --line-strong: #627187;
    --accent: #82a5ff;
    --accent-dark: #a8c0ff;
    --accent-soft: #17284f;
    --accent-ink: #0b111a;
    --feature-bg: #101e3a;
    --feature-ink: #f4f7fc;
    --feature-muted: #b9c8e8;
    --feature-line: #526b9f;
    --inverse-button-bg: #e8edf5;
    --inverse-button-hover: #f4f7fc;
    --inverse-button-ink: #183d9a;
    --warning: #e5c981;
    --warning-bg: #352f20;
    --error: #efa29c;
    --error-bg: #3c2525;
    --code: #080e16;
    --code-text: #e8edf5;
    --code-muted: #a4b0bf;
    --code-accent: #91b0ff;
    --code-accent-strong: #c3d2ff;
    --code-line: #3c4b60;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: light; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-color-scheme: dark) { html { color-scheme: dark; } }
html, body { overflow-x: clip; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; }
a, button, summary { touch-action: manipulation; -webkit-tap-highlight-color: color-mix(in srgb, var(--accent) 18%, transparent); }
::selection { background: var(--accent); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.assessment :focus-visible, .closing-cta :focus-visible, .md-independence :focus-visible { outline-color: var(--feature-ink); }

.skip-link { background: var(--accent); color: var(--accent-ink); font-size: 13px; font-weight: 600; left: 12px; padding: 10px 14px; position: fixed; top: 12px; transform: translateY(-180%); transition: transform 120ms linear; z-index: 50; }
.skip-link:focus { transform: translateY(0); }

.shell, .section, .header-inner, .hero-inner, .footer-inner { margin-inline: auto; max-width: var(--container); padding-inline: var(--pad); }

/* Navigation */
.site-header { background: var(--bg); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 30; }
.header-inner { align-items: center; display: flex; gap: 28px; height: 56px; }
.wordmark { align-items: center; display: inline-flex; flex: 0 0 auto; font-size: 15px; font-weight: 600; gap: 9px; letter-spacing: -0.01em; text-decoration: none; }
.wordmark svg { display: block; }
.marketing-navigation { margin-left: auto; }
.marketing-navigation-list { align-items: center; display: flex; gap: 2px; list-style: none; }
.marketing-navigation a, .navigation-dropdown > button { background: transparent; border: 0; border-radius: var(--control-radius); color: var(--ink-soft); cursor: pointer; font: 500 13px/1.4 var(--sans); padding: 7px 10px; text-decoration: none; transition: background 120ms linear, color 120ms linear; }
.marketing-navigation a:hover, .navigation-dropdown > button:hover, .navigation-dropdown > button[aria-expanded="true"] { background: var(--accent-soft); color: var(--accent-dark); }
.navigation-dropdown { position: relative; }
.navigation-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 4px; box-shadow: 0 8px 24px rgba(23,27,30,.10); left: 0; list-style: none; min-width: 220px; opacity: 0; padding: 6px; pointer-events: none; position: absolute; top: calc(100% + 8px); transform: translateY(-4px); transition: opacity 160ms ease-out, transform 160ms ease-out, visibility 160ms; visibility: hidden; }
.navigation-panel a { display: block; padding: 8px 10px; }
.navigation-dropdown[data-open] > .navigation-panel, .navigation-dropdown:focus-within > .navigation-panel, .navigation-dropdown:hover > .navigation-panel { opacity: 1; pointer-events: auto; transform: translateY(0); visibility: visible; }
.navigation-access { margin-left: 6px; }
.marketing-navigation .navigation-cta a { background: var(--accent); color: var(--accent-ink); margin-left: 4px; }
.marketing-navigation .navigation-cta a:hover { background: var(--accent-dark); color: var(--accent-ink); }
.marketing-menu-button { background: transparent; border: 0; color: var(--ink); cursor: pointer; display: none; height: 40px; margin-left: auto; padding: 10px; width: 40px; }
.marketing-menu-button span { background: currentColor; display: block; height: 1px; margin: 5px 0; transition: transform 120ms linear; width: 20px; }
.marketing-menu-button[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.marketing-menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* Controls */
.btn, .md-button { align-items: center; border: 1px solid transparent; border-radius: var(--control-radius); cursor: pointer; display: inline-flex; flex: 0 0 auto; font: 600 14px/1 var(--sans); height: 40px; justify-content: center; padding: 0 17px; text-decoration: none; transition: background 120ms linear, border-color 120ms linear, color 120ms linear; white-space: nowrap; }
.btn-sm { font-size: 12.5px; height: 34px; padding-inline: 13px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: var(--accent-ink); }
.btn-secondary { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-dark); }
.btn-inverse { background: var(--inverse-button-bg); border-color: var(--inverse-button-bg); color: var(--inverse-button-ink); }
.btn-inverse:hover { background: var(--inverse-button-hover); border-color: var(--inverse-button-hover); color: var(--inverse-button-ink); }
.text-link { color: var(--accent-dark); display: inline-flex; font-size: 14px; font-weight: 600; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 4px; transition: text-decoration-color 120ms linear; }
.text-link:hover { text-decoration-color: currentColor; }

/* Typography and section rhythm */
.eyebrow, .md-eyebrow { color: var(--accent); font: 500 12px/1.4 var(--mono); letter-spacing: .03em; margin-bottom: 16px; }
h1, h2, h3 { text-wrap: balance; }
.hero h1 { font-size: 56px; font-weight: 600; letter-spacing: -.035em; line-height: 1.02; max-width: 14ch; }
.product-hero h1, .calculator-hero h1, .pricing-hero h1, .legal-page h1, .docs-main h1 { font-size: 48px; font-weight: 600; letter-spacing: -.03em; line-height: 1.06; max-width: 16ch; }
.section h2, .assessment h2, .product-band h2, .product-code-section h2, .closing-cta h2, .inference-pricing h2 { font-size: 36px; font-weight: 600; letter-spacing: -.025em; line-height: 1.12; }
h3 { font-size: 22px; font-weight: 600; letter-spacing: -.015em; line-height: 1.22; }
.section { padding-block: 80px; }
.section-heading { margin-bottom: 40px; max-width: 780px; }
.section-heading h2 { max-width: 20ch; }
.section-heading p { color: var(--muted); font-size: 16px; margin-top: 16px; max-width: 65ch; }
.compact-heading { margin-bottom: 32px; }

/* Homepage */
.hero { border-bottom: 1px solid var(--line); }
.hero-inner { align-items: center; display: grid; gap: 72px; grid-template-columns: repeat(12, minmax(0, 1fr)); min-height: 580px; padding-block: 64px; }
.hero-copy { grid-column: span 7; }
.lede, .product-lede { color: var(--ink-soft); font-size: 18px; line-height: 1.5; margin-top: 24px; max-width: 64ch; }
.hero h1 { max-width: 19ch; }
.hero .lede { max-width: 54ch; }
.hero-actions, .product-actions, .conversion-cta { align-items: center; display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.control-field { grid-column: span 5; margin: 0; min-width: 0; }
.control-field-map { display: grid; grid-template-columns: 1fr 1.2fr 1fr; grid-template-rows: 1fr 1.2fr 1fr; height: 310px; isolation: isolate; position: relative; }
.control-field-map::before, .control-field-map::after { background: var(--line-strong); content: ""; left: 50%; position: absolute; top: 50%; z-index: -1; }
.control-field-map::before { height: 68%; transform: translate(-.5px, -50%); width: 1px; }
.control-field-map::after { height: 1px; transform: translate(-50%, -.5px); width: 72%; }
.control-node { align-self: center; background: var(--bg); border: 1px solid var(--line-strong); color: var(--accent-dark); font: 500 12px/1 var(--mono); justify-self: center; min-width: 92px; padding: 13px 14px; text-align: center; text-decoration: none; transition: background 140ms ease-out, border-color 140ms ease-out, color 140ms ease-out, transform 140ms ease-out; }
.control-node:hover, .control-node:active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); transform: translateY(-2px); }
.control-node:active { transform: translateY(0); }
.control-node-evaluate { grid-column: 2; grid-row: 1; }
.control-node-route { grid-column: 3; grid-row: 2; }
.control-node-measure { grid-column: 1; grid-row: 2; }
.control-node-record { grid-column: 2; grid-row: 3; }
.control-field-center { align-items: center; aspect-ratio: 1; align-self: center; background: var(--accent); border: 1px solid var(--accent); border-radius: 50%; color: var(--accent-ink); display: flex; font-size: 15px; grid-column: 2; grid-row: 2; justify-content: center; justify-self: center; line-height: 1.15; padding: 18px; text-align: center; width: 108px; }
.constraint-axis { border-top: 1px solid var(--line-strong); display: grid; grid-template-columns: repeat(5, 1fr); list-style: none; margin-top: 8px; padding-top: 13px; }
.constraint-axis li { color: var(--muted); font: 400 10px/1.4 var(--mono); min-width: 0; position: relative; text-align: center; }
.constraint-axis li::before { background: var(--accent); content: ""; height: 5px; left: 50%; position: absolute; top: -16px; transform: translateX(-50%); width: 5px; }
.control-field figcaption { color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 20px; max-width: 48ch; }
.platform-memorandum { background: var(--bg); border-bottom: 1px solid var(--line); padding-block: 96px; }
.memorandum-grid { align-items: start; display: grid; gap: 64px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.memorandum-grid > header { grid-column: span 4; position: sticky; top: 104px; }
.memorandum-grid > header h2 { font-size: 32px; }
.memorandum-grid > header p { color: var(--muted); margin-top: 20px; }
.platform-ledger { border-top: 1px solid var(--line-strong); display: grid; gap: 0; grid-column: span 8; }
.platform-ledger a { align-items: start; background: var(--bg); border-bottom: 1px solid var(--line); display: grid; gap: 24px; grid-template-columns: 155px minmax(0, 1fr); min-height: 116px; padding: 27px 0; text-decoration: none; transition: background 140ms ease-out, color 140ms ease-out; }
.platform-ledger strong { font-size: 17px; }
.platform-ledger span { color: var(--ink-soft); font-size: 14px; max-width: 62ch; }
.platform-ledger a:hover, .platform-ledger a:focus-visible { background: color-mix(in srgb, var(--accent-soft) 42%, var(--bg)); }
.platform-ledger a:hover strong, .platform-ledger a:focus-visible strong { color: var(--accent-dark); }
.platform-ledger a:focus-visible { outline-offset: 2px; }
.assessment { background: var(--feature-bg); border-bottom: 1px solid var(--feature-line); color: var(--feature-ink); padding-block: 88px; }
.assessment-grid { align-items: start; display: grid; gap: 80px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.assessment-copy { grid-column: span 7; padding-top: 18px; }
.assessment-copy > p { color: var(--feature-muted); font-size: 17px; margin: 22px 0 30px; max-width: 58ch; }
.assessment-terms { border-left: 1px solid var(--feature-line); grid-column: span 5; padding-left: 40px; }
.assessment-price { align-items: baseline; display: flex; gap: 12px; padding: 4px 0 22px; }
.assessment-price strong { font: 500 34px/1 var(--mono); }
.assessment-price span { color: var(--feature-muted); font-size: 13px; }
.assessment-terms dl > div { border-top: 1px solid var(--feature-line); display: grid; gap: 16px; grid-template-columns: 90px 1fr; padding: 12px 0; }
.assessment-terms dt { color: var(--feature-muted); font: 500 12px/1.4 var(--mono); }
.assessment-terms dd { color: var(--feature-ink); font-size: 14px; }
.entry-section { border-bottom: 1px solid var(--line); padding-block: 96px; }
.entry-layout { display: grid; gap: 64px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.entry-layout > header { grid-column: span 4; margin: 0; }
.entry-paths { border-top: 1px solid var(--line-strong); grid-column: span 8; }
.entry-paths > article { padding: 30px 0 34px; }
.entry-paths > article + article { border-top: 1px solid var(--line); }
.entry-paths p { color: var(--ink-soft); margin: 14px 0 20px; max-width: 68ch; }
.developer-entry { align-items: start; display: grid; gap: 28px; grid-template-columns: minmax(0, 4fr) minmax(300px, 5fr); }
.developer-entry .conversion-cta { margin-top: 20px; }
.code-appendix { margin: 0; min-width: 0; }
.code-panel, .code-appendix { background: var(--code); border: 1px solid var(--line-strong); border-radius: 0; color: var(--code-text); max-width: 100%; min-width: 0; overflow: hidden; }
.docs-main pre.code { background: var(--code); border: 1px solid var(--line-strong); border-radius: 0; color: var(--code-text); max-width: 100%; min-width: 0; overflow-x: auto; }
.code-panel figcaption { border-bottom: 1px solid var(--code-line); color: var(--code-muted); font: 400 12px/1.4 var(--mono); padding: 12px 16px; }
.code { color: var(--code-text); font: 400 12.5px/1.7 var(--mono); max-width: 100%; min-width: 0; overflow-x: auto; padding: 20px; }
.code > code { display: block; min-width: max-content; }
.code .c { color: var(--code-muted); } .code .k { color: var(--code-accent-strong); } .code .s { color: var(--code-accent); }
.faq-section { padding-block: 88px 104px; }
.faq-grid { display: grid; gap: 64px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.faq-grid > header { grid-column: span 5; }
.faq-grid > header h2 { max-width: 14ch; }
.faq-list { border-top: 1px solid var(--line-strong); grid-column: span 7; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; font-size: 16px; font-weight: 500; list-style: none; padding: 18px 36px 18px 0; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font: 400 18px/1 var(--mono); position: absolute; right: 4px; top: 20px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { color: var(--muted); max-width: 67ch; padding: 0 36px 18px 0; }
.closing-cta { background: var(--feature-bg); color: var(--feature-ink); padding-block: 48px; }
.closing-grid { align-items: center; display: grid; gap: 48px; grid-template-columns: 1fr auto; }
.closing-cta h2 { font-size: 32px; max-width: 26ch; }
.closing-cta p { color: var(--feature-muted); font-size: 15px; margin-top: 8px; max-width: 66ch; }

/* Progressive section reveals. Content remains visible until capability is confirmed. */
.motion-ready [data-reveal] [data-reveal-item] { opacity: 0; transform: translateY(18px); transition: opacity 420ms ease-out, transform 420ms ease-out; transition-delay: calc(var(--reveal-order, 0) * 65ms); }
.motion-ready [data-reveal].is-revealed [data-reveal-item] { opacity: 1; transform: translateY(0); }

/* Product briefs and artifacts */
.decision-brief dl > div, .memorandum-schedule dl > div { border-top: 1px solid var(--line); display: grid; gap: 18px; grid-template-columns: 100px 1fr; padding: 12px 0; }
.decision-brief dt, .memorandum-schedule dt { color: var(--accent); font: 500 12px/1.4 var(--mono); }
.decision-brief dd, .memorandum-schedule dd { color: var(--ink-soft); font-size: 14px; }
.product-hero, .pricing-hero, .calculator-hero { border-bottom: 1px solid var(--line); padding-block: 72px; }
.product-hero-grid { align-items: start; display: grid; gap: 64px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.product-hero-grid > div { grid-column: span 7; }
.product-hero-grid > .decision-brief { grid-column: span 5; }
.decision-brief { border-top: 2px solid var(--accent); padding-top: 16px; }
.decision-brief h2 { font-size: 20px; }
.decision-brief dl { margin-top: 14px; }
.product-evidence { border-bottom: 1px solid var(--line); }
.evidence-ledger { border-top: 1px solid var(--line-strong); }
.evidence-ledger .ledger-head, .evidence-ledger > section { display: grid; gap: 32px; grid-template-columns: minmax(150px, 3fr) minmax(250px, 5fr) minmax(180px, 4fr); }
.evidence-ledger .ledger-head { color: var(--muted); font: 500 12px/1.4 var(--mono); padding: 10px 0; }
.evidence-ledger > section { border-top: 1px solid var(--line); padding: 20px 0; }
.evidence-ledger h3 { font-size: 18px; }
.evidence-ledger p { color: var(--ink-soft); font-size: 14px; }
.evidence-ledger code { font: 400 12px/1.5 var(--mono); }
.product-band, .product-code-section, .inference-pricing { background: var(--surface-subtle); border-bottom: 1px solid var(--line); padding-block: 64px; }
.memorandum-schedule, .product-code-grid { align-items: start; display: grid; gap: 64px; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.memorandum-schedule > div, .product-code-grid > div { grid-column: span 6; }
.memorandum-schedule > dl, .product-code-grid > figure { grid-column: span 6; min-width: 0; }
.memorandum-schedule > div p, .product-code-grid > div p { color: var(--ink-soft); margin: 16px 0 20px; max-width: 60ch; }
.related-controls { border-top: 1px solid var(--line-strong); display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 0; }
.related-controls a { display: grid; gap: 4px; padding: 18px 20px; text-decoration: none; }
.related-controls a + a { border-left: 1px solid var(--line); }
.related-controls strong { font-size: 14px; }
.related-controls span { color: var(--muted); font-size: 13px; }
.related-controls a:hover strong { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 4px; }

/* Pricing */
.pricing-hero h1 { max-width: 22ch; }
.pricing-hero .shell > p { color: var(--ink-soft); font-size: 18px; margin: 22px 0 28px; max-width: 62ch; }
.package-row > div:first-child p, .package-row > p, .package-commercial span { color: var(--muted); font-size: 14px; margin-top: 6px; }
.package-commercial strong { display: block; font: 500 16px/1.4 var(--mono); }
.package-commercial .text-link { margin-top: 10px; }
.pricing-contact { border-top: 1px solid var(--line); padding-block: 80px; }
.pricing-contact-grid { align-items: start; display: grid; gap: 72px; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.pricing-contact-copy h2 { font-size: 36px; font-weight: 600; letter-spacing: -.025em; line-height: 1.12; max-width: 18ch; }
.pricing-contact-copy p { color: var(--ink-soft); margin-top: 18px; max-width: 52ch; }
.pricing-form { background: var(--surface); border: 1px solid var(--line-strong); display: grid; gap: 18px; min-width: 0; padding: 32px; }
.pricing-form-field { display: grid; gap: 7px; }
.pricing-form-field label { color: var(--ink-soft); font-size: 14px; font-weight: 500; }
.pricing-form-field input, .pricing-form-field textarea { background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--control-radius); color: var(--ink); font: 400 16px/1.5 var(--sans); min-height: 44px; padding: 9px 11px; width: 100%; }
.pricing-form-field textarea { min-height: 132px; resize: vertical; }
.pricing-form-field input::placeholder, .pricing-form-field textarea::placeholder { color: var(--faint); opacity: 1; }
.pricing-form-field input:focus-visible, .pricing-form-field textarea:focus-visible { border-color: var(--accent); outline: 2px solid var(--accent); outline-offset: 1px; }
.pricing-form-field input:user-invalid, .pricing-form-field textarea:user-invalid, .pricing-form-field [aria-invalid="true"] { border-color: var(--error); box-shadow: 0 0 0 1px var(--error); }
.pricing-form-warning { background: var(--warning-bg); border-left: 3px solid var(--warning); color: var(--warning); font-size: 13px; padding: 11px 13px; }
.pricing-form .btn { height: 44px; justify-self: start; }
.pricing-honeypot { clip: rect(0 0 0 0); clip-path: inset(50%); height: 1px; overflow: hidden; position: absolute; white-space: nowrap; width: 1px; }

/* Calculator */
.calculator-hero .shell { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.calculator-hero .eyebrow, .calculator-hero h1, .calculator-hero .product-lede { grid-column: span 8; }
.worksheet-intro { border-top: 2px solid var(--accent); display: grid; gap: 48px; grid-template-columns: 4fr 8fr; margin-bottom: 32px; padding-top: 18px; }
.worksheet-intro h2 { font-size: 28px; }
.worksheet-intro p { color: var(--muted); }
.worksheet-intro p + p { margin-top: 8px; }
.calculator-errors { background: var(--error-bg); border: 1px solid var(--error); color: var(--error); margin-bottom: 24px; padding: 16px 18px; }
.calculator-errors h3 { font-size: 17px; }.calculator-errors ul { margin: 8px 0 0 20px; }
.calculator-form { background: var(--surface); border: 1px solid var(--line-strong); padding: 32px; }
.calculator-form fieldset { border: 0; min-width: 0; }
.calculator-form legend { border-top: 1px solid var(--line-strong); font-size: 18px; font-weight: 600; padding-top: 14px; width: 100%; }
.calculator-fields { display: grid; gap: 16px; margin-top: 18px; }
.calculator-fields-three { grid-template-columns: repeat(3, 1fr); }
.calculator-fields label { color: var(--ink-soft); display: grid; font-size: 13px; font-weight: 500; gap: 6px; }
.calculator-fields input, .calculator-fields select { background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--control-radius); color: var(--ink); font: 400 14px/1.4 var(--mono); height: 40px; padding: 8px 10px; width: 100%; }
.calculator-fields input:focus, .calculator-fields select:focus { border-color: var(--accent); outline: 2px solid color-mix(in srgb, var(--accent) 70%, transparent); outline-offset: 0; }
.calculator-scenarios { display: grid; gap: 48px; grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
.calculator-submit { align-items: center; border-top: 1px solid var(--line); display: flex; gap: 20px; margin-top: 32px; padding-top: 22px; }
.calculator-submit p { color: var(--muted); font-size: 13px; }
.calculator-warning { background: var(--warning-bg); border-left: 3px solid var(--warning); color: var(--warning); font-size: 13px; margin-top: 16px; padding: 12px 16px; }
.calculator-results { background: var(--surface-subtle); border-block: 1px solid var(--line); padding-block: 64px; }
.result-table-wrap { max-width: 100%; overflow-x: clip; }
.result-table { border-collapse: collapse; table-layout: fixed; width: 100%; }
.result-table-measure-column { width: 38%; }.result-table-current-column { width: 26%; }.result-table-candidate-column { width: 36%; }
.result-table th, .result-table td { border-bottom: 1px solid var(--line); padding: 14px 16px; text-align: right; vertical-align: middle; }
.result-table thead th { border-top: 1px solid var(--line-strong); color: var(--muted); font: 500 12px/1.4 var(--mono); overflow-wrap: anywhere; }
.result-table th:first-child { text-align: left; }.result-table tbody th { color: var(--ink-soft); font-size: 14px; font-weight: 400; overflow-wrap: anywhere; }
.result-table td { font: 500 20px/1.3 var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.difference-panel { border-bottom: 1px solid var(--line-strong); display: grid; gap: 32px; grid-template-columns: repeat(2, 1fr); padding: 22px 16px; }
.difference-panel span, .difference-panel strong { display: block; }
.difference-panel span { color: var(--muted); font-size: 12px; }.difference-panel strong { font: 500 28px/1.2 var(--mono); margin-top: 4px; }
.difference-panel p { color: var(--ink-soft); font-size: 13px; grid-column: 1 / -1; max-width: 80ch; }
.assumption-ledger { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 28px; }
.assumption-ledger article { border-top: 1px solid var(--line-strong); padding: 16px 0; }
.assumption-ledger article + article { padding-left: 32px; }
.assumption-ledger h3 { font-size: 15px; }.assumption-ledger p { color: var(--muted); font: 400 12px/1.55 var(--mono); margin-top: 8px; }
.calculator-assessment-link { margin-top: 24px; }

/* Docs and legal */
.docs-main { margin-inline: auto; max-width: 900px; padding: 64px var(--pad) 80px; }
.docs-main h1 { margin-bottom: 16px; }.docs-lede { color: var(--muted); font-size: 17px; margin-bottom: 36px; max-width: 65ch; }
.docs-main h2 { border-top: 1px solid var(--line-strong); font-size: 24px; margin: 40px 0 12px; padding-top: 20px; }
.docs-main h3 { font-size: 16px; margin: 22px 0 8px; }.docs-main p { color: var(--ink-soft); margin-bottom: 12px; max-width: 70ch; }.docs-main ol { color: var(--ink-soft); margin: 0 0 18px 22px; }.docs-main li { margin-bottom: 6px; }.docs-main a { color: var(--accent-dark); }
.docs-main code.inline { background: var(--surface-subtle); border: 1px solid var(--line); border-radius: var(--control-radius); font: 400 12px/1.5 var(--mono); padding: 1px 4px; }.docs-main pre.code { margin: 12px 0 20px; }
.docs-table-wrap { margin: 12px 0 20px; max-width: 100%; min-width: 0; overflow-x: auto; }.docs-table { border-collapse: collapse; font-size: 14px; min-width: max-content; width: 100%; }.docs-table th, .docs-table td { border-bottom: 1px solid var(--line); padding: 9px 14px 9px 0; text-align: left; vertical-align: top; }.docs-table th { border-color: var(--line-strong); }.docs-table td:first-child { color: var(--ink); font: 400 12px/1.5 var(--mono); white-space: nowrap; }.docs-note { background: var(--surface); border-left: 3px solid var(--accent); padding: 13px 15px; }
.legal-page { max-width: 840px; }.legal-page .section-head-col { margin-bottom: 32px; }.legal-page .section-head-col p { color: var(--muted); margin-top: 12px; }.legal-page .faq-list { max-width: none; }

/* Utility footer */
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { align-items: center; display: grid; gap: 24px; grid-template-columns: auto 1fr auto; padding-block: 24px; }
.foot-brand { align-items: center; display: flex; gap: 14px; }.foot-brand p { color: var(--muted); font-size: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 5px 16px; justify-content: center; }.footer-links a { color: var(--muted); font-size: 12px; text-decoration: none; }.footer-links a:hover { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.footer-copyright { color: var(--faint); font-size: 12px; white-space: nowrap; }

@media (max-width: 1040px) {
  :root { --pad: 32px; }
  .section { padding-block: 64px; }
  .marketing-menu-button { display: block; }
  .marketing-navigation { background: var(--bg); border-bottom: 1px solid var(--line); display: none; left: 0; margin: 0; max-height: calc(100dvh - 56px); overflow-y: auto; padding: 12px var(--pad) 20px; position: absolute; right: 0; top: 56px; }
  .marketing-navigation[data-open] { display: block; }
  .marketing-navigation-list { align-items: stretch; flex-direction: column; }.marketing-navigation-list > li, .navigation-dropdown > button, .marketing-navigation-list > li > a { width: 100%; }.navigation-dropdown > button, .marketing-navigation-list > li > a { display: block; font-size: 15px; padding: 11px; text-align: left; }
  .navigation-panel { background: var(--surface); box-shadow: none; display: none; margin-bottom: 6px; min-width: 0; opacity: 1; position: static; transform: none; visibility: visible; }.navigation-dropdown[data-open] > .navigation-panel { display: block; }.navigation-dropdown:not([data-open]):focus-within > .navigation-panel, .navigation-dropdown:not([data-open]):hover > .navigation-panel { display: none; }
  .navigation-access { border-top: 1px solid var(--line); margin: 6px 0 0; padding-top: 6px; }.marketing-navigation .navigation-cta a { margin: 6px 0 0; }
  .hero-inner { gap: 48px; grid-template-columns: 1fr; min-height: 0; }.hero-copy, .control-field { grid-column: 1; }.control-field { max-width: 620px; width: 100%; }
  .memorandum-grid > header { position: static; }.platform-ledger a { grid-template-columns: 135px 1fr; }
  .entry-layout { gap: 36px; grid-template-columns: 1fr; }.entry-layout > header, .entry-paths { grid-column: 1; }.developer-entry { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }.foot-brand, .footer-links { justify-content: flex-start; }
}

@media (max-width: 719px) {
  :root { --pad: 20px; }
  .section { padding-block: 48px; }
  .hero-inner { gap: 32px; grid-template-columns: 1fr; padding-block: 32px 40px; }
  .product-hero, .pricing-hero, .calculator-hero { padding-block: 44px; }
  .product-hero-grid, .memorandum-grid, .assessment-grid, .faq-grid, .memorandum-schedule, .product-code-grid { display: grid; gap: 32px; grid-template-columns: 1fr; }
  .hero-copy, .control-field, .product-hero-grid > div, .product-hero-grid > .decision-brief, .memorandum-grid > header, .platform-ledger, .assessment-copy, .assessment-terms, .faq-grid > header, .faq-list, .memorandum-schedule > div, .memorandum-schedule > dl, .product-code-grid > div, .product-code-grid > figure { grid-column: 1; }
  .hero h1 { font-size: 38px; line-height: 1.02; max-width: 14ch; }.product-hero h1, .calculator-hero h1, .pricing-hero h1, .legal-page h1, .docs-main h1 { font-size: 34px; line-height: 1.06; }.section h2, .assessment h2, .product-band h2, .product-code-section h2, .inference-pricing h2 { font-size: 28px; }.closing-cta h2 { font-size: 26px; }.lede, .product-lede { font-size: 17px; }
  .hero-actions, .product-actions { align-items: flex-start; }
  .control-field-map { height: 250px; }.control-node { min-width: 78px; padding: 12px 8px; }.control-field-center { font-size: 13px; width: 88px; }.constraint-axis li { font-size: 9px; }.control-field figcaption { margin-top: 16px; }
  .platform-memorandum { padding-block: 40px; }.platform-ledger a { gap: 8px; grid-template-columns: 1fr; min-height: 0; padding: 18px 0; }.platform-ledger span { font-size: 15px; }
  .assessment { padding-block: 56px; }.assessment-copy { padding-top: 0; }.assessment-terms { border-left: 0; border-top: 1px solid var(--feature-line); padding-left: 0; padding-top: 24px; }.assessment-terms dl > div { grid-template-columns: 80px 1fr; }
  .entry-section { padding-block: 56px; }.entry-layout { gap: 28px; grid-template-columns: 1fr; }.entry-layout > header, .entry-paths { grid-column: 1; }.entry-paths > article { padding: 24px 0 28px; }.developer-entry { display: grid; gap: 20px; grid-template-columns: 1fr; }.developer-entry .conversion-cta { margin-top: 18px; }.code-appendix { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; }.code-appendix.code { font-size: 11px; line-height: 1.75; padding: 14px 12px; }.code-appendix.code > code { min-width: 0; }
  .faq-section { padding-block: 52px 64px; }.faq-grid > header h2 { max-width: 18ch; }
  .closing-cta { padding-block: 32px; }.closing-grid { align-items: start; gap: 24px; grid-template-columns: 1fr; }
  .evidence-ledger .ledger-head { display: none; }.evidence-ledger > section { display: grid; gap: 8px; grid-template-columns: 1fr; padding: 16px 0; }.evidence-ledger h3 { font-size: 18px; }.evidence-ledger p { font-size: 15px; }
  .product-band, .product-code-section, .inference-pricing, .calculator-results { padding-block: 48px; }
  .pricing-contact { padding-block: 48px; }.pricing-contact-grid { gap: 32px; grid-template-columns: 1fr; }.pricing-contact-copy h2 { font-size: 28px; }.pricing-form { padding: 24px 20px; }.pricing-form .btn { justify-self: stretch; width: 100%; }
  .related-controls { grid-template-columns: 1fr; }.related-controls a { padding: 14px 0; }.related-controls a + a { border-left: 0; border-top: 1px solid var(--line); }
  .calculator-hero .shell { display: block; }.worksheet-intro { gap: 12px; grid-template-columns: 1fr; }.calculator-form { padding: 20px 16px; }.calculator-fields-three, .calculator-scenarios { grid-template-columns: 1fr; }.calculator-scenarios { gap: 32px; }.calculator-submit { align-items: flex-start; flex-direction: column; }
  .difference-panel, .assumption-ledger { grid-template-columns: 1fr; }.difference-panel p { grid-column: 1; }.assumption-ledger article + article { padding-left: 0; }
  .result-table-measure-column { width: 35%; }.result-table-current-column { width: 29%; }.result-table-candidate-column { width: 36%; }
  .result-table th, .result-table td { overflow-wrap: anywhere; padding: 10px 6px; white-space: normal; }.result-table thead th { font-size: 12px; line-height: 1.25; }.result-table tbody th { font-size: 12px; line-height: 1.3; }.result-table td { font-size: 12px; line-height: 1.25; }
  .docs-main { padding: 48px var(--pad); }.footer-inner { padding-block: 20px; }.foot-brand { align-items: flex-start; flex-direction: column; gap: 4px; }.footer-links { gap: 6px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
  [data-reveal-item] { opacity: 1 !important; transform: none !important; transition: none !important; }
}