/* =========================================================================
   AlphaRoot public site — Midnight Tech (light, cyan accent).
   Tokens live in tokens.css (loaded first); this file only consumes them.
   ========================================================================= */

:root {
  /* Public-site Bootstrap bridge (shared colour bridge is in tokens.css) */
  --bs-body-font-size: var(--font-size-md);
  --bs-body-line-height: var(--line-height-base);
}

/* ---------- Base ---------- */
html { scroll-padding-top: calc(var(--header-height) + 1rem); }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; font-feature-settings: "cv11", "ss01"; }
h1, h2, h3, h4, .h1, .h2, .h3, .h4, .h5 { color: var(--color-heading); font-weight: 650; letter-spacing: -0.015em; line-height: var(--line-height-tight); overflow-wrap: break-word; }
h1, .h1 { font-size: clamp(2rem, 1.4rem + 2.2vw, 2.9rem); letter-spacing: -0.025em; }
h2, .h2 { font-size: clamp(1.55rem, 1.25rem + 1.1vw, 2.1rem); }
h3, .h3 { font-size: 1.2rem; }
p { margin-bottom: 1rem; }
a { text-underline-offset: .2em; text-decoration-thickness: 1px; }
img { max-width: 100%; height: auto; }
main:focus { outline: none; }
::selection { background: var(--color-accent-soft); color: var(--color-heading); }

:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; border-radius: 3px; }
.btn:focus-visible, .form-control:focus-visible, .form-select:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; box-shadow: none; }
/* Dark sections: the light focus colour would be invisible on navy. */
.site-footer, .cta-band, .section-ink { --color-focus: var(--color-focus-on-dark); }

.skip-link { position: absolute; left: 1rem; top: -100px; z-index: 2000; padding: .6rem 1rem; background: var(--color-navy); color: #fff; border-radius: var(--radius-sm); }
.skip-link:focus { top: 1rem; color: #fff; }

.container-narrow { max-width: 820px; }
.text-primary { color: var(--color-accent-strong) !important; }
.icon { flex-shrink: 0; vertical-align: -0.15em; }

.eyebrow { display: inline-flex; align-items: center; gap: .55rem; font-size: .8125rem; font-weight: var(--font-weight-semibold); letter-spacing: var(--letter-spacing-eyebrow); text-transform: uppercase; color: var(--color-accent-strong); margin-bottom: .75rem; }
.eyebrow::before { content: ""; width: 1.25rem; height: 2px; border-radius: 2px; background: var(--color-accent); flex-shrink: 0; }
.eyebrow a { color: inherit; text-decoration: none; }
.lead, .lead-text { font-size: 1.1875rem; line-height: 1.6; color: var(--color-text-muted); font-weight: 400; }
.lead-text { color: var(--color-text); }

/* ---------- Buttons ---------- */
.btn { --bs-btn-font-weight: var(--font-weight-semibold); --bs-btn-border-radius: var(--radius-sm); --bs-btn-padding-x: 1.1rem; --bs-btn-padding-y: .6rem; letter-spacing: -0.005em; min-height: var(--control-height); display: inline-flex; align-items: center; justify-content: center; gap: .4rem; }
.btn-lg { --bs-btn-padding-x: 1.4rem; --bs-btn-padding-y: .8rem; --bs-btn-font-size: 1.0625rem; --bs-btn-border-radius: var(--radius-sm); }
.btn-sm { --bs-btn-padding-x: .8rem; --bs-btn-padding-y: .35rem; min-height: var(--control-height-sm); }
.btn-primary {
  --bs-btn-bg: var(--color-accent-strong); --bs-btn-border-color: var(--color-accent-strong);
  --bs-btn-hover-bg: var(--color-accent-strong-hover); --bs-btn-hover-border-color: var(--color-accent-strong-hover);
  --bs-btn-active-bg: var(--color-accent-strong-hover); --bs-btn-active-border-color: var(--color-accent-strong-hover);
  --bs-btn-disabled-bg: var(--color-accent-strong); --bs-btn-disabled-border-color: var(--color-accent-strong);
}
.btn-outline-primary {
  --bs-btn-color: var(--color-accent-strong); --bs-btn-border-color: var(--color-accent-hover); --bs-btn-bg: var(--color-surface);
  --bs-btn-hover-bg: var(--color-accent-tint); --bs-btn-hover-color: var(--color-accent-strong-hover); --bs-btn-hover-border-color: var(--color-accent-strong);
  --bs-btn-active-bg: var(--color-accent-tint); --bs-btn-active-color: var(--color-accent-strong-hover); --bs-btn-active-border-color: var(--color-accent-strong);
}
.btn-light { --bs-btn-color: var(--color-navy); --bs-btn-bg: var(--color-surface); --bs-btn-border-color: var(--color-surface); --bs-btn-hover-bg: var(--color-accent-soft); --bs-btn-hover-border-color: var(--color-accent-soft); --bs-btn-hover-color: var(--color-navy); --bs-btn-active-bg: var(--color-accent-soft); --bs-btn-active-color: var(--color-navy); }
.btn-outline-light { --bs-btn-color: #fff; --bs-btn-border-color: rgba(255,255,255,.45); --bs-btn-hover-bg: var(--color-on-dark-line); --bs-btn-hover-color: #fff; --bs-btn-hover-border-color: #fff; }
.link-arrow { display: inline-flex; align-items: center; gap: .4rem; font-weight: 600; text-decoration: none; }
.link-arrow:hover .icon { transform: translateX(3px); }
.link-arrow .icon { transition: transform var(--transition-fast); }

/* ---------- Environment banner ---------- */
/* Below the sticky header (1030): the mobile off-canvas menu lives inside the header's stacking context and must cover the banner. */
.env-banner { position: relative; z-index: 1020; padding: .45rem 1rem; color: #fff; font-weight: 600; text-align: center; font-size: .8125rem; letter-spacing: .02em; }
.env-staging { background: var(--color-warning); }
.env-development, .env-testing { background: #6d28d9; }

/* ---------- Header ---------- */
/* No backdrop-filter here: it creates a containing block and breaks the fixed off-canvas menu. */
.site-header { position: sticky; top: 0; z-index: 1030; background: var(--color-surface); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-sm); }
.site-header .navbar { min-height: var(--header-height); padding-block: .5rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--color-navy); font-weight: var(--font-weight-bold); font-size: 1.25rem; letter-spacing: -0.02em; }
.brand:hover { color: var(--color-navy); }
/* "Root" in the wordmark: #0891B2 is 3.7:1 on white, AA for large bold text (20px/700). */
.brand-name-accent { color: var(--color-accent-hover); }
.brand-footer .brand-name-accent { color: var(--color-accent-on-dark); }
.brand-mark { width: 32px; height: 32px; flex-shrink: 0; }
.brand-mark-bg { fill: var(--color-navy); }
.brand-footer .brand-mark-bg { fill: var(--color-navy-2); }
.brand-mark-line { fill: none; stroke: var(--color-surface); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.brand-mark-root { fill: none; stroke: var(--color-accent); stroke-width: 1.8; stroke-linecap: round; }
.navbar-toggler { border: 1px solid var(--color-border-strong); padding: .35rem .45rem; color: var(--color-navy); border-radius: var(--radius-sm); min-width: var(--control-height); min-height: var(--control-height); }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler:hover { background: var(--color-surface-muted); }
.site-header .nav-link { color: var(--color-text); font-weight: 500; font-size: .975rem; padding: .5rem .8rem !important; border-radius: var(--radius-sm); }
.site-header .nav-link:hover { color: var(--color-accent-strong); background: var(--color-accent-tint); }
/* Active page: colour, weight and a bar, never colour alone. */
.site-header .nav-link.active { color: var(--color-heading); font-weight: var(--font-weight-semibold); }
.nav-item-cta { margin-left: .5rem; }
@media (min-width: 1200px) {
  .site-header .nav-link.active { box-shadow: inset 0 -3px 0 var(--color-accent-hover); border-radius: 0; background: none; }
}
@media (max-width: 1199.98px) {
  .offcanvas { --bs-offcanvas-width: min(320px, 86vw); --bs-offcanvas-bg: var(--color-surface); }
  .offcanvas .nav-link { font-size: 1.0625rem; padding: .75rem .25rem !important; border-bottom: 1px solid var(--color-border); border-radius: 0; }
  .offcanvas .nav-link.active { box-shadow: inset 3px 0 0 var(--color-accent-hover); text-indent: .6rem; }
  .nav-item-cta { margin: 1.25rem 0 0; }
  .nav-item-cta .btn { width: 100%; }
}

/* ---------- Hero ---------- */
.hero { padding: clamp(3rem, 7vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem); background: radial-gradient(60rem 28rem at 85% -10%, rgb(56 189 248 / 12%), transparent 70%), linear-gradient(180deg, var(--color-page) 0%, var(--color-surface) 100%); border-bottom: 1px solid var(--color-border); }
.hero-title { font-size: clamp(2.1rem, 1.4rem + 2.6vw, 3.2rem); margin-bottom: 1.25rem; max-width: 20ch; }
.hero-lead { font-size: clamp(1.1rem, 1rem + .35vw, 1.3rem); color: var(--color-text-muted); max-width: 46ch; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 1.25rem; margin: 2rem 0 0; color: var(--color-text-muted); font-size: .95rem; }
.hero-meta span { display: inline-flex; align-items: center; gap: .35rem; }
.hero-visual { position: relative; max-width: 480px; margin-inline: auto; }
.hero-portrait { border-radius: var(--radius-lg); box-shadow: var(--shadow-raised); object-fit: cover; width: 100%; }
.hero-landing .breadcrumb { margin-bottom: 2rem; }

.hero-art { width: 100%; height: auto; display: block; }
.ha-grid path { stroke: var(--color-border); stroke-width: 1; fill: none; }
.ha-links path { stroke: var(--color-accent-hover); opacity: .55; stroke-width: 1.5; fill: none; stroke-dasharray: 4 5; }
.ha-node rect { fill: var(--color-surface); stroke: var(--color-border-strong); stroke-width: 1.25; }
.ha-node-lines path { stroke: var(--color-border-strong); stroke-width: 2; stroke-linecap: round; }
.ha-core-ring { fill: none; stroke: var(--color-accent); stroke-width: 1.5; }
.ha-core { fill: var(--color-navy); }
.ha-core-mark { fill: none; stroke: var(--color-accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { position: relative; padding: clamp(2.25rem, 5vw, 3.75rem) 0 clamp(2rem, 4vw, 3rem); background: radial-gradient(48rem 20rem at 100% 0%, rgb(6 182 212 / 8%), transparent 70%), var(--color-page); border-bottom: 1px solid var(--color-border); }
.page-hero h1 { margin-bottom: .75rem; max-width: 26ch; }
.page-hero .lead { max-width: 60ch; margin-bottom: 0; }
.page-hero-body { display: flex; gap: 1.25rem; align-items: flex-start; }
.breadcrumb { --bs-breadcrumb-divider-color: var(--color-text-muted); --bs-breadcrumb-item-active-color: var(--color-text-muted); font-size: .875rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent-strong); text-decoration: underline; }

/* ---------- Sections ---------- */
.section { padding: var(--space-section) 0; }
.section-tight { padding: clamp(2rem, 4vw, 3rem) 0 var(--space-section); }
.section-muted { background: var(--color-surface-muted); border-block: 1px solid var(--color-border); }
.section-ink { background: var(--color-navy); color: var(--color-on-dark); }
.section-ink a:not(.btn) { color: var(--color-accent-on-dark); }
.section-ink h2, .section-ink h3 { color: var(--color-surface); }
.section-ink .eyebrow { color: var(--color-accent-on-dark); }
.section-ink .section-lead { color: var(--color-on-dark-muted); }
.section-heading { max-width: 720px; margin-bottom: 2.5rem; }
.section-heading h2 { margin-bottom: .75rem; }
.section-lead { color: var(--color-text-muted); font-size: 1.0625rem; margin-bottom: 0; }
.section-header-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 1.5rem; }
.section-header-row .section-heading { margin-bottom: 2.5rem; }
.section-header-row > .link-arrow { margin-bottom: 2.6rem; white-space: nowrap; }

/* ---------- Cards ---------- */
.card-tile { position: relative; display: flex; flex-direction: column; padding: 1.6rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-card); transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
.card-tile::before { content: ""; position: absolute; inset: 0 1.6rem auto; pointer-events: none; height: 3px; border-radius: 0 0 3px 3px; background: var(--color-accent); opacity: 0; transition: opacity var(--transition-fast); }
.card-tile:hover { border-color: var(--color-accent-line); box-shadow: var(--shadow-raised); }
.card-tile:hover::before, .card-tile:focus-within::before { opacity: 1; }
.card-tile:focus-within { border-color: var(--color-accent-hover); }
.card-tile-title { font-size: 1.125rem; margin: 0 0 .5rem; }
.card-tile-title a { color: var(--color-heading); text-decoration: none; }
.card-tile-title a:hover { color: var(--color-accent-strong); }
.card-tile-title a:focus-visible { outline: none; }
.card-tile-title a:focus-visible::after { outline: 3px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius-md); }
.card-tile-text { color: var(--color-text-muted); font-size: .975rem; margin-bottom: 0; }
.card-tile-text p:last-child { margin-bottom: 0; }
.card-tile-more { margin-top: auto; padding-top: 1.1rem; font-weight: 600; font-size: .925rem; color: var(--color-accent-strong); display: inline-flex; align-items: center; gap: .35rem; }
.card-tile-image { width: calc(100% + 3.2rem); max-width: none; margin: -1.6rem -1.6rem 1.25rem; border-radius: var(--radius-md) var(--radius-md) 0 0; aspect-ratio: 16 / 9; object-fit: cover; }
.card-tile-meta { display: flex; flex-wrap: wrap; gap: .4rem 1rem; align-items: center; font-size: .8125rem; color: var(--color-text-muted); margin-bottom: .6rem; }
.icon-tile { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--color-accent-soft); color: var(--color-accent-strong-hover); margin-bottom: 1.1rem; flex-shrink: 0; }
.icon-tile-lg { width: 56px; height: 56px; margin: 0; }
.badge-soft { display: inline-block; padding: .15rem .55rem; font-size: .75rem; font-weight: 600; border-radius: 999px; background: var(--color-accent-soft); color: var(--color-accent-strong-hover); }

.tag-list { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.tag-list li { padding: .25rem .65rem; font-size: .8125rem; font-weight: 500; border: 1px solid var(--color-border); border-radius: 999px; background: var(--color-surface); color: var(--color-text); }
.tag-list-links li { padding: 0; }
.tag-list-links a { display: block; padding: .25rem .65rem; text-decoration: none; border-radius: 999px; }
.tag-list-links a:hover { background: var(--color-accent-tint); color: var(--color-accent-strong-hover); }

/* ---------- Expertise, tech, process ---------- */
.expertise-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .75rem; }
.expertise-item { display: flex; align-items: center; gap: .7rem; padding: .95rem 1.1rem; background: var(--color-surface); border: 1px solid var(--color-border); border-left: 3px solid var(--color-accent); border-radius: var(--radius-sm); font-weight: 500; color: var(--color-heading); }
.tech-groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem 2rem; }
.tech-group-title { font-size: .8125rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-muted); font-weight: 600; margin: 0; }
.tech-group .tag-list { margin-top: .6rem; }

.process { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1.5rem; counter-reset: none; }
.process-step { padding-top: 1.25rem; border-top: 2px solid var(--color-border); }
.process-step:first-child { border-top-color: var(--color-accent-hover); }
.process-number { display: block; font-size: .875rem; font-weight: 700; color: var(--color-accent-strong); letter-spacing: .04em; margin-bottom: .5rem; font-variant-numeric: tabular-nums; }
.process-title { font-size: 1.125rem; margin-bottom: .4rem; }
.process-step p { color: var(--color-text-muted); font-size: .95rem; margin: 0; }

/* ---------- Prose (sanitised Markdown) ---------- */
.prose > :last-child { margin-bottom: 0; }
.prose a { color: var(--color-accent-strong); text-decoration: underline; }
.prose a:hover { color: var(--color-accent-strong-hover); }
.prose h2 { font-size: 1.5rem; margin: 2.25rem 0 .9rem; }
.prose h3 { font-size: 1.2rem; margin: 1.75rem 0 .6rem; }
.prose ul, .prose ol { padding-left: 1.25rem; margin-bottom: 1rem; }
.prose li { margin-bottom: .4rem; }
.prose li::marker { color: var(--color-accent-strong); }
.prose blockquote { border-left: 3px solid var(--color-accent-hover); padding: .25rem 0 .25rem 1.1rem; color: var(--color-text-muted); margin: 1.5rem 0; }
.prose code { font-family: var(--font-mono); font-size: .9em; background: var(--color-surface-muted); padding: .1em .35em; border-radius: 4px; color: var(--color-heading); }
.prose pre { background: var(--color-navy); color: var(--color-on-dark); padding: 1rem 1.25rem; border-radius: var(--radius-sm); overflow-x: auto; font-size: .875rem; }
.prose pre code { background: none; color: inherit; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: .95rem; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--color-border); padding: .55rem .75rem; text-align: left; }
.prose th { background: var(--color-surface-muted); color: var(--color-heading); }
.prose img { border-radius: var(--radius-sm); margin: 1rem 0; }
.prose-checklist ul { list-style: none; padding-left: 0; }
.prose-checklist li { position: relative; padding-left: 1.75rem; margin-bottom: .75rem; }
.prose-checklist li::before { content: ""; position: absolute; left: 0; top: .5em; width: 1rem; height: .55rem; border-left: 2px solid var(--color-accent-strong); border-bottom: 2px solid var(--color-accent-strong); transform: rotate(-45deg) translateY(-2px); }
.prose-ink { color: var(--color-on-dark); }
.prose-ink strong { color: var(--color-surface); }
.prose-ink.prose-checklist li::before { border-color: var(--color-accent-on-dark); }
.prose-ink.prose-checklist ul { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: .5rem 2.5rem; }
.article-body { font-size: 1.0938rem; line-height: 1.75; max-width: var(--reading-width); }
.article-body p { margin-bottom: 1.25rem; }

/* ---------- Detail pages ---------- */
.detail-block { margin-bottom: 2.75rem; }
.detail-block > h2 { font-size: 1.4rem; margin-bottom: 1rem; padding-bottom: .75rem; border-bottom: 1px solid var(--color-border); }
.detail-image { width: 100%; border-radius: var(--radius-md); margin-bottom: 2.5rem; }
.aside-card { padding: 1.75rem; border: 1px solid var(--color-border); border-top: 3px solid var(--color-accent); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-card); top: calc(var(--header-height) + 1.5rem); }
.aside-card .btn + .link-arrow { display: inline-flex; }
.aside-heading { font-size: .8125rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-muted); margin: 1.5rem 0 0; font-weight: 600; }
.fact-list, .profile-facts { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .5rem 1rem; font-size: .95rem; }
.fact-list dt, .profile-facts dt { font-weight: 600; color: var(--color-text-muted); }
.fact-list dd, .profile-facts dd { margin: 0; color: var(--color-heading); }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.gallery figure { margin: 0; }
.gallery img { border-radius: var(--radius-sm); border: 1px solid var(--color-border); }
.gallery figcaption { font-size: .85rem; color: var(--color-text-muted); margin-top: .4rem; }
.article-hero h1 { max-width: none; }
.article-meta { display: flex; flex-wrap: wrap; gap: .4rem 1.25rem; color: var(--color-text-muted); font-size: .9rem; margin: 1.25rem 0 0; }

/* ---------- About ---------- */
.profile-card { padding: 1.5rem; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.profile-portrait { border-radius: var(--radius-md); width: 100%; margin-bottom: 1.5rem; }
.profile-art { background: var(--color-surface-muted); border-radius: var(--radius-md); margin-bottom: 1.5rem; padding: .5rem; }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--color-border); }
.timeline-item { position: relative; display: grid; grid-template-columns: 180px 1fr; gap: 1.5rem; padding: 0 0 2.25rem 2rem; }
.timeline-item::before { content: ""; position: absolute; left: -7px; top: .45rem; width: 12px; height: 12px; border-radius: 50%; background: var(--color-surface); border: 2px solid var(--color-accent-strong); }
.timeline-period { font-weight: 600; color: var(--color-accent-strong); font-size: .95rem; margin: 0; }
.timeline-role { font-size: 1.125rem; margin-bottom: .25rem; }
.timeline-org { color: var(--color-text-muted); margin-bottom: .5rem; }
@media (max-width: 767.98px) { .timeline-item { grid-template-columns: 1fr; gap: .25rem; } }

/* ---------- Testimonials ---------- */
.testimonial { margin: 0; padding: 1.75rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); display: flex; flex-direction: column; }
.testimonial blockquote { margin: 0 0 1.25rem; font-size: 1.025rem; color: var(--color-heading); }
.testimonial figcaption { margin-top: auto; font-size: .9rem; color: var(--color-text-muted); display: flex; flex-direction: column; }
.testimonial figcaption strong { color: var(--color-heading); }

/* ---------- Insights ---------- */
.chip-nav { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.5rem; }
.chip { padding: .4rem .9rem; border: 1px solid var(--color-border); border-radius: 999px; text-decoration: none; color: var(--color-text); font-size: .9rem; font-weight: 500; background: var(--color-surface); }
.chip:hover { border-color: var(--color-accent-hover); color: var(--color-accent-strong-hover); }
.chip.active { background: var(--color-navy); border-color: var(--color-navy); color: var(--color-surface); box-shadow: inset 0 -2px 0 var(--color-accent); }
.featured-article { position: relative; display: grid; grid-template-columns: 1fr; gap: 0; border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 2.5rem; background: var(--color-surface); }
.featured-article-body { padding: clamp(1.5rem, 3vw, 2.5rem); }
.featured-article-title { font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem); }
.featured-article-title a { color: var(--color-heading); text-decoration: none; }
.featured-article-image { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 9; }
@media (min-width: 992px) { .featured-article:has(.featured-article-image) { grid-template-columns: 1.1fr 1fr; } }

/* ---------- Filters, pagination, empty states ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-end; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-sm); margin-bottom: 2.5rem; }
.filter-bar > div { min-width: 200px; flex: 1 1 200px; }
.filter-bar .filter-actions { flex: 0 0 auto; min-width: 0; display: flex; gap: .5rem; }
.pagination-nav { margin-top: 3rem; display: flex; justify-content: center; }
.pagination { --bs-pagination-color: var(--color-text); --bs-pagination-active-bg: var(--color-navy); --bs-pagination-active-border-color: var(--color-navy); --bs-pagination-hover-color: var(--color-accent-strong-hover); --bs-pagination-hover-bg: var(--color-accent-tint); --bs-pagination-focus-box-shadow: none; --bs-pagination-border-radius: var(--radius-sm); flex-wrap: wrap; }
.empty-state { max-width: 620px; margin: 0 auto; text-align: center; padding: 3rem 1.5rem; border: 1px dashed var(--color-border-strong); border-radius: var(--radius-lg); background: var(--color-surface); }
.empty-state .icon { color: var(--color-accent-strong); }
.empty-state .icon { margin-bottom: 1rem; }
.empty-state p { color: var(--color-text-muted); }

/* ---------- CTA band ---------- */
.cta-band { padding: clamp(3rem, 6vw, 4.5rem) 0; background: radial-gradient(40rem 18rem at 0% 100%, rgb(6 182 212 / 18%), transparent 70%), var(--color-navy); color: var(--color-on-dark); border-top: 3px solid var(--color-accent); }
.cta-band-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem 3rem; }
.cta-band h2 { color: var(--color-surface); margin-bottom: .4rem; }
.cta-band p { color: var(--color-on-dark-muted); margin: 0; font-size: 1.0625rem; }
.cta-band-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---------- Contact ---------- */
.contact-points { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 1rem; }
.contact-points li { display: flex; gap: .75rem; align-items: flex-start; color: var(--color-text-muted); font-size: .975rem; }
.contact-points .icon { margin-top: .2rem; }
.contact-form { padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--color-border); border-top: 3px solid var(--color-accent); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-card); }
.form-label { font-weight: 600; font-size: .925rem; color: var(--color-heading); margin-bottom: .35rem; }
.form-control, .form-select, .form-check-input { border-color: var(--color-input-border); }
.form-control, .form-select { border-color: var(--color-input-border); padding: .6rem .8rem; font-size: 1rem; min-height: var(--control-height); border-radius: var(--radius-sm); background-color: var(--color-surface); }
.form-control:focus, .form-select:focus { border-color: var(--color-accent-strong); box-shadow: var(--focus-ring-shadow); }
.form-control[aria-invalid="true"], .form-select[aria-invalid="true"], .form-check-input[aria-invalid="true"] { border-color: var(--color-danger); }
.form-check-input:checked { background-color: var(--color-accent-strong); border-color: var(--color-accent-strong); }
.form-text { color: var(--color-text-muted); }
.field-error { display: block; color: var(--color-danger); font-size: .875rem; font-weight: var(--font-weight-medium); margin-top: .3rem; min-height: 0; }
.field-error:empty { display: none; }
.req { color: var(--color-danger); }
.hp-field { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.alert-info { --bs-alert-bg: var(--color-accent-tint); --bs-alert-border-color: var(--color-accent-line); --bs-alert-color: var(--color-heading); }
.alert { border-radius: var(--radius-md); }

/* ---------- Error page ---------- */
.error-page { padding-block: clamp(4rem, 10vw, 8rem); }
.error-code { font-size: clamp(4rem, 3rem + 5vw, 7rem); font-weight: 750; line-height: 1; color: var(--color-accent-hover); letter-spacing: -0.04em; margin-bottom: 1rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-navy); color: var(--color-on-dark-muted); padding: clamp(3rem, 6vw, 4.5rem) 0 2rem; border-top: 3px solid var(--color-accent); font-size: .95rem; }
/* The CTA band already carries the cyan rule; the band is the last child of <main>, so the footer is not its sibling. */
main:has(> .cta-band:last-child) + .site-footer { border-top: 1px solid var(--color-on-dark-line); }
.brand-footer { color: var(--color-surface); margin-bottom: 1rem; }
.brand-footer:hover { color: var(--color-surface); }
.footer-tagline { color: var(--color-surface); font-weight: 500; margin-bottom: .5rem; }
.footer-text { max-width: 36ch; }
.footer-heading { font-size: .8125rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-accent-on-dark); font-weight: 600; margin-bottom: 1rem; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.site-footer a { color: var(--color-on-dark-muted); text-decoration: none; }
.site-footer a:hover { color: var(--color-surface); text-decoration: underline; }
.footer-bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--color-on-dark-line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; font-size: .875rem; }
.footer-bottom p { margin: 0; }
.footer-legal { list-style: none; display: flex; gap: 1.25rem; padding: 0; margin: 0; }

/* ---------- Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ---------- Small screens ---------- */
@media (max-width: 575.98px) {
  .hero-visual { max-width: 300px; }
  .hero-actions .btn, .cta-band-actions .btn { width: 100%; }
  .section-header-row { display: block; }
  .page-hero-body { flex-direction: column; gap: .75rem; }
  .card-tile { padding: 1.35rem; }
  .card-tile-image { width: calc(100% + 2.7rem); margin: -1.35rem -1.35rem 1.1rem; }
}

@media print {
  .site-header, .site-footer, .cta-band, .env-banner, .skip-link { display: none !important; }
}

/* ---------- AI consulting ---------- */
.ai-layer { fill: var(--color-navy); }
.ai-layer-mark { fill: none; stroke: var(--color-accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.ai-spark { fill: var(--color-accent); }
.ai-art .ha-node circle { fill: var(--color-surface); stroke: var(--color-border-strong); stroke-width: 1.25; }
.section-ai { background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-accent-tint) 100%); border-block: 1px solid var(--color-border); }
.subsection-title { font-size: 1.25rem; margin-bottom: .5rem; }

/* Ordered Markdown list rendered as a stacked architecture diagram. */
.flow-figure { margin: 0; padding: 1.5rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.flow-title { font-size: .8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-muted); margin-bottom: 1rem; }
.flow-stack ol { list-style: none; padding: 0; margin: 0; counter-reset: flow; display: grid; gap: 1.6rem; }
.flow-stack li { position: relative; counter-increment: flow; margin: 0; padding: .9rem 1rem .9rem 3.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-muted); font-size: .95rem; color: var(--color-text-muted); }
.flow-stack li strong { color: var(--color-heading); }
.flow-stack li::before { content: counter(flow); position: absolute; left: 1rem; top: .95rem; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--color-accent-soft); color: var(--color-accent-strong-hover); font-weight: 700; font-size: .8rem; display: grid; place-items: center; }
.flow-stack li:nth-child(3) { background: var(--color-navy); border-color: var(--color-navy); color: var(--color-on-dark); box-shadow: inset 3px 0 0 var(--color-accent); }
.flow-stack li:nth-child(3) strong { color: var(--color-surface); }
.flow-stack li:nth-child(3)::before { background: var(--color-accent); color: var(--color-accent-strong-hover); }
.flow-stack li:not(:last-child)::after { content: ""; position: absolute; left: 50%; bottom: -1.45rem; width: 2px; height: 1.3rem; background: var(--color-accent); }

/* Unordered Markdown lists rendered as chips and question cards. */
.chip-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.chip-grid li { margin: 0; padding: .4rem .85rem; border: 1px solid var(--color-accent-hover); border-radius: 999px; background: var(--color-surface); font-size: .9rem; font-weight: 500; color: var(--color-heading); }
.chip-grid li::marker { content: none; }
.question-list ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; }
.question-list li { margin: 0; padding: .8rem 1rem .8rem 2.6rem; position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); color: var(--color-heading); font-weight: 500; }
.question-list li::before { content: "?"; position: absolute; left: .9rem; top: 1rem; width: 1.2rem; height: 1.2rem; border-radius: 50%; background: var(--color-accent-strong); color: var(--color-surface); font-size: .75rem; font-weight: 700; display: grid; place-items: center; }
.list-columns ul { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .25rem 2rem; }
.tools-note { margin-top: 2rem; padding: 1.25rem 1.5rem; border: 1px solid var(--color-on-dark-line); border-left: 3px solid var(--color-accent); border-radius: var(--radius-md); }
.tools-note h3 { color: var(--color-surface); margin-bottom: .5rem; }
.tools-note p { color: var(--color-on-dark-muted); font-size: .95rem; }
.section-note { padding: 0 0 var(--space-section); }
.section-ink + .section-note, .section + .section-note { padding-top: 0; }
.scope-note { display: flex; gap: .75rem; align-items: flex-start; padding: 1rem 1.25rem; border: 1px solid var(--color-border); border-left: 3px solid var(--color-accent-hover); border-radius: var(--radius-sm); background: var(--color-surface); font-size: .925rem; color: var(--color-text-muted); }
.scope-note .icon { margin-top: .2rem; }
.scope-note p { margin: 0; }

/* Approved AlphaRoot brand artwork */
.brand-logo {
    display: block;
    height: auto;
    max-width: 100%;
    flex-shrink: 0;
}
.brand-logo-header {
    width: 190px;
    max-height: 44px;
}
.brand-logo-footer {
    width: 150px;
    max-height: 130px;
    object-fit: contain;
}
@media (max-width: 575.98px) {
    .brand-logo-header { width: 160px; }
    .brand-logo-footer { width: 140px; }
}