/* =====================================================================================================
   design.css: the fleet's look (marketing-and-design refresh, 2026-10).
   Byte-identical in every repo. Loaded by shared/_design_system, which shared/_brand_colors renders, so it
   lands AFTER application.css in every layout and wins over the old Bootstrap-era overrides there without
   anyone editing them. Per-app colour stays in env (PRIMARY_COLOR / PRIMARY_COLOR_DARK): this file only ever
   uses var(--brand), var(--brand-rgb), var(--primary-color). Neutrals are literals on purpose; they are the
   same for every app.

   Direction: soft minimalism (Linear, Vercel, Notion AI, Perplexity). Neutral surfaces, 1px hairlines, one
   accent per app, soft brand glow instead of solid brand bands, Inter, tight headings.

   Sections: 1 tokens · 2 base · 3 Bootstrap components · 4 app shell · 5 marketing (mk-*) · 6 motion
   ===================================================================================================== */

/* ---------- 1. Tokens ---------------------------------------------------------------------------- */
:root,
[data-bs-theme="light"] {
  --ds-font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ds-bg: #ffffff;
  --ds-bg-subtle: #fafafa;
  --ds-bg-muted: #f4f4f5;
  --ds-bg-elevated: #ffffff;
  --ds-fg: #0a0a0a;
  --ds-fg-2: #3f3f46;
  --ds-fg-muted: #6b6b76;
  --ds-fg-faint: #a1a1aa;
  --ds-line: rgba(10, 10, 10, 0.08);
  --ds-line-strong: rgba(10, 10, 10, 0.14);
  --ds-nav-bg: rgba(255, 255, 255, 0.72);
  --ds-shadow-sm: 0 1px 2px rgba(10, 10, 10, 0.04), 0 1px 1px rgba(10, 10, 10, 0.03);
  --ds-shadow: 0 1px 2px rgba(10, 10, 10, 0.04), 0 8px 24px -6px rgba(10, 10, 10, 0.08);
  --ds-shadow-lg: 0 2px 4px rgba(10, 10, 10, 0.04), 0 24px 48px -12px rgba(10, 10, 10, 0.14);
  --ds-glow: 0.24;
  --ds-radius-sm: 6px;
  --ds-radius: 10px;
  --ds-radius-lg: 14px;
  --ds-radius-xl: 20px;

  --bs-body-font-family: var(--ds-font);
  --bs-body-bg: var(--ds-bg);
  --bs-body-bg-rgb: 255, 255, 255;
  --bs-body-color: var(--ds-fg-2);
  --bs-emphasis-color: var(--ds-fg);
  --bs-heading-color: var(--ds-fg);
  --bs-secondary-color: var(--ds-fg-muted);
  --bs-tertiary-color: var(--ds-fg-faint);
  --bs-secondary-bg: var(--ds-bg-muted);
  --bs-tertiary-bg: var(--ds-bg-subtle);
  --bs-tertiary-bg-rgb: 250, 250, 250;
  --bs-light-rgb: 250, 250, 250;
  --bs-border-color: var(--ds-line);
  --bs-border-color-translucent: var(--ds-line);
  --bs-border-radius: var(--ds-radius);
  --bs-border-radius-sm: var(--ds-radius-sm);
  --bs-border-radius-lg: var(--ds-radius-lg);
  --bs-border-radius-xl: var(--ds-radius-xl);
  --bs-box-shadow-sm: var(--ds-shadow-sm);
  --bs-box-shadow: var(--ds-shadow);
  --bs-box-shadow-lg: var(--ds-shadow-lg);
  --bs-focus-ring-color: rgba(var(--brand-rgb), 0.22);
}

[data-bs-theme="dark"] {
  --ds-bg: #0b0b0d;
  --ds-bg-subtle: #111113;
  --ds-bg-muted: #18181b;
  --ds-bg-elevated: #141416;
  --ds-fg: #f4f4f5;
  --ds-fg-2: #d4d4d8;
  --ds-fg-muted: #a1a1aa;
  --ds-fg-faint: #71717a;
  --ds-line: rgba(255, 255, 255, 0.08);
  --ds-line-strong: rgba(255, 255, 255, 0.14);
  --ds-nav-bg: rgba(11, 11, 13, 0.72);
  --ds-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --ds-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px -6px rgba(0, 0, 0, 0.5);
  --ds-shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.4), 0 24px 48px -12px rgba(0, 0, 0, 0.7);
  --ds-glow: 0.34;

  --bs-body-bg: var(--ds-bg);
  --bs-body-bg-rgb: 11, 11, 13;
  --bs-body-color: var(--ds-fg-2);
  --bs-emphasis-color: var(--ds-fg);
  --bs-heading-color: var(--ds-fg);
  --bs-secondary-color: var(--ds-fg-muted);
  --bs-tertiary-color: var(--ds-fg-faint);
  --bs-secondary-bg: var(--ds-bg-muted);
  --bs-tertiary-bg: var(--ds-bg-subtle);
  --bs-tertiary-bg-rgb: 17, 17, 19;
  --bs-light-rgb: 24, 24, 27;
  --bs-dark-rgb: 11, 11, 13;
  --bs-border-color: var(--ds-line);
  --bs-border-color-translucent: var(--ds-line);
}

/* ---------- 2. Base ------------------------------------------------------------------------------ */
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ds-font);
  font-feature-settings: "cv11", "ss01", "ss03";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--ds-bg);
  color: var(--ds-fg-2);
  letter-spacing: -0.006em;
}
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
  color: var(--ds-fg);
  font-weight: 600;
  letter-spacing: -0.02em;
}
h1, .h1 { letter-spacing: -0.03em; }
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 1.05;
}
.lead { color: var(--ds-fg-muted); font-weight: 400; }
.text-muted, .text-body-secondary { color: var(--ds-fg-muted) !important; }
.fw-bold, strong, b { font-weight: 600; }
a { text-underline-offset: 3px; }
hr { border-color: var(--ds-line); opacity: 1; }
::selection { background-color: rgba(var(--brand-rgb), 0.22); color: inherit; }
:focus-visible { outline: 2px solid rgba(var(--brand-rgb), 0.55); outline-offset: 2px; }
code { color: var(--primary-color); }

/* Surfaces: Bootstrap's fixed greys become the neutral scale in both themes. */
.bg-light, .bg-body-tertiary { background-color: var(--ds-bg-subtle) !important; }
.bg-body-secondary { background-color: var(--ds-bg-muted) !important; }
[data-bs-theme="dark"] .bg-light,
[data-bs-theme="dark"] .bg-white { background-color: var(--ds-bg-muted) !important; color: var(--ds-fg-2) !important; }
.border, .border-top, .border-bottom, .border-start, .border-end { border-color: var(--ds-line) !important; }
.shadow-sm { box-shadow: var(--ds-shadow-sm) !important; }
.shadow { box-shadow: var(--ds-shadow) !important; }
.shadow-lg { box-shadow: var(--ds-shadow-lg) !important; }
.rounded { border-radius: var(--ds-radius) !important; }
.rounded-3 { border-radius: var(--ds-radius-lg) !important; }
.rounded-4 { border-radius: var(--ds-radius-xl) !important; }

/* ---------- 3. Bootstrap components --------------------------------------------------------------- */
/* Buttons: medium weight, 8px corners, quiet secondaries. Colour of .btn-primary stays in _brand_colors. */
.btn {
  --bs-btn-font-weight: 500;
  --bs-btn-border-radius: 8px;
  --bs-btn-padding-x: 0.95rem;
  --bs-btn-padding-y: 0.45rem;
  --bs-btn-focus-box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.22);
  letter-spacing: -0.01em;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.btn-lg { --bs-btn-padding-x: 1.25rem; --bs-btn-padding-y: 0.65rem; --bs-btn-font-size: 1rem; --bs-btn-border-radius: 10px; }
.btn-sm { --bs-btn-padding-x: 0.65rem; --bs-btn-padding-y: 0.3rem; --bs-btn-border-radius: 7px; }
.btn-primary { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 1px 2px rgba(var(--brand-rgb), 0.3); }
.btn-secondary,
.btn-outline-secondary,
.btn-light,
.btn-outline-dark,
.btn-outline-light {
  --bs-btn-color: var(--ds-fg);
  --bs-btn-bg: var(--ds-bg-elevated);
  --bs-btn-border-color: var(--ds-line-strong);
  --bs-btn-hover-color: var(--ds-fg);
  --bs-btn-hover-bg: var(--ds-bg-muted);
  --bs-btn-hover-border-color: var(--ds-line-strong);
  --bs-btn-active-color: var(--ds-fg);
  --bs-btn-active-bg: var(--ds-bg-muted);
  --bs-btn-active-border-color: var(--ds-line-strong);
  --bs-btn-disabled-color: var(--ds-fg-faint);
  --bs-btn-disabled-bg: transparent;
  --bs-btn-disabled-border-color: var(--ds-line);
  box-shadow: var(--ds-shadow-sm);
}
[data-bs-theme="dark"] .btn-outline-secondary {
  --bs-btn-color: var(--ds-fg);
  --bs-btn-border-color: var(--ds-line-strong);
  --bs-btn-hover-color: var(--ds-fg);
  --bs-btn-hover-bg: var(--ds-bg-muted);
  --bs-btn-hover-border-color: var(--ds-line-strong);
}
.btn-link { --bs-btn-box-shadow: none; text-decoration: none; }

/* Cards: flat, hairline, no lift. */
.card {
  --bs-card-bg: var(--ds-bg-elevated);
  --bs-card-border-color: var(--ds-line);
  --bs-card-border-radius: var(--ds-radius-lg);
  --bs-card-inner-border-radius: calc(var(--ds-radius-lg) - 1px);
  --bs-card-cap-bg: transparent;
  --bs-card-spacer-y: 1.25rem;
  --bs-card-spacer-x: 1.25rem;
  box-shadow: var(--ds-shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: none; box-shadow: var(--ds-shadow-sm); border-color: var(--ds-line-strong); }
.card-header, .card-footer { border-color: var(--ds-line); }
.card-title { color: var(--ds-fg); font-weight: 600; letter-spacing: -0.015em; }
/* A stat number in a grid card scales to the card. Inter at 650 is wider than Bootstrap's system stack, and
   "Unlimited" at display-6 ran out of a col-md-3 card beside the sidebar (hub org page, 2026-10-11).
   Only cards in a sized column: a container query on a card whose width comes from its content collapses it. */
:where(.col, [class*="col-"]:not([class*="col-auto"])) > .card > .card-body:has([class*="display-"]) { container-type: inline-size; }
.card-body .display-1 { font-size: min(calc(1.625rem + 4.5vw), 5rem, 17cqi); }
.card-body .display-2 { font-size: min(calc(1.575rem + 3.9vw), 4.5rem, 17cqi); }
.card-body .display-3 { font-size: min(calc(1.525rem + 3.3vw), 4rem, 17cqi); }
.card-body .display-4 { font-size: min(calc(1.475rem + 2.7vw), 3.5rem, 17cqi); }
.card-body .display-5 { font-size: min(calc(1.425rem + 2.1vw), 3rem, 17cqi); }
.card-body .display-6 { font-size: min(calc(1.375rem + 1.5vw), 2.5rem, 17cqi); }

/* Forms: quiet borders, brand focus ring. */
.form-control,
.form-select,
.input-group-text,
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select,
[data-bs-theme="dark"] .input-group-text {
  background-color: var(--ds-bg-elevated);
  color: var(--ds-fg);
  border-color: var(--ds-line-strong);
  border-radius: 8px;
}
.input-group-text { background-color: var(--ds-bg-subtle); color: var(--ds-fg-muted); }
.form-control:focus,
.form-select:focus,
[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
  background-color: var(--ds-bg-elevated);
  color: var(--ds-fg);
  border-color: rgba(var(--brand-rgb), 0.6);
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.18);
}
.form-control::placeholder, [data-bs-theme="dark"] .form-control::placeholder { color: var(--ds-fg-faint); }
.form-control:disabled, .form-control[readonly],
[data-bs-theme="dark"] .form-control:disabled, [data-bs-theme="dark"] .form-control[readonly] {
  background-color: var(--ds-bg-subtle);
  color: var(--ds-fg-muted);
}
.form-control-plaintext { color: var(--ds-fg); }
.form-label, .col-form-label { color: var(--ds-fg); font-weight: 500; font-size: 0.9rem; }
.form-text { color: var(--ds-fg-muted); }
.form-check-input { border-color: var(--ds-line-strong); }
.form-check-input:checked { background-color: var(--brand); border-color: var(--brand); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.18); border-color: rgba(var(--brand-rgb), 0.6); }

/* Tables: no zebra weight, muted small header. */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--ds-fg-2);
  --bs-table-border-color: var(--ds-line);
  --bs-table-striped-bg: var(--ds-bg-subtle);
  --bs-table-hover-bg: var(--ds-bg-subtle);
}
.table > thead > tr > th,
.table > thead > tr > td {
  color: var(--ds-fg-muted);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0;
  border-bottom-color: var(--ds-line);
}
.table-light,
[data-bs-theme="dark"] .table-light {
  --bs-table-bg: var(--ds-bg-subtle);
  --bs-table-color: var(--ds-fg-muted);
  --bs-table-border-color: var(--ds-line);
}

/* Badges and pills. */
.badge { font-weight: 500; letter-spacing: 0; border-radius: 999px; padding: 0.35em 0.65em; }
.badge.bg-secondary { background-color: var(--ds-bg-muted) !important; color: var(--ds-fg-2) !important; }
.badge.bg-primary { background-color: rgba(var(--brand-rgb), 0.12) !important; color: var(--primary-color) !important; }
.badge.bg-success { background-color: rgba(var(--bs-success-rgb), 0.14) !important; color: var(--bs-success-text-emphasis) !important; }
.badge.bg-danger { background-color: rgba(var(--bs-danger-rgb), 0.14) !important; color: var(--bs-danger-text-emphasis) !important; }
.badge.bg-info { background-color: rgba(var(--bs-info-rgb), 0.16) !important; color: var(--bs-info-text-emphasis) !important; }
.badge.bg-warning { background-color: rgba(var(--bs-warning-rgb), 0.2) !important; color: var(--bs-warning-text-emphasis) !important; }
.badge.bg-dark { background-color: var(--ds-fg) !important; color: var(--ds-bg) !important; }

/* Alerts: soft fill, hairline. */
.alert { border-radius: var(--ds-radius); border-width: 1px; }

/* Menus, modals, popovers. */
.dropdown-menu,
[data-bs-theme="dark"] .dropdown-menu {
  background-color: var(--ds-bg-elevated);
  border: 1px solid var(--ds-line);
  border-radius: 12px;
  box-shadow: var(--ds-shadow-lg);
  padding: 6px;
}
.dropdown-item { border-radius: 7px; padding: 0.45rem 0.7rem; font-size: 0.925rem; color: var(--ds-fg-2); }
.dropdown-item:hover, .dropdown-item:focus { background-color: var(--ds-bg-muted); color: var(--ds-fg); }
.dropdown-header { color: var(--ds-fg-faint); font-size: 0.75rem; font-weight: 500; padding: 0.5rem 0.7rem 0.25rem; }
.dropdown-divider { border-color: var(--ds-line); margin: 6px 0; }
.modal-content {
  --bs-modal-bg: var(--ds-bg-elevated);
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius-xl);
  box-shadow: var(--ds-shadow-lg);
}
.modal-header, .modal-footer { border-color: var(--ds-line); }
.modal-backdrop.show { opacity: 0.4; }
.offcanvas { --bs-offcanvas-bg: var(--ds-bg); --bs-offcanvas-border-color: var(--ds-line); }
.list-group { --bs-list-group-bg: var(--ds-bg-elevated); --bs-list-group-border-color: var(--ds-line); --bs-list-group-action-hover-bg: var(--ds-bg-subtle); }
.nav-tabs { --bs-nav-tabs-border-color: var(--ds-line); --bs-nav-tabs-link-active-bg: transparent; --bs-nav-tabs-link-active-border-color: transparent transparent var(--primary-color); }
.nav-tabs .nav-link { border-width: 0 0 2px; color: var(--ds-fg-muted); font-weight: 500; }
.nav-tabs .nav-link.active { color: var(--ds-fg); }
.nav-pills { --bs-nav-pills-link-active-bg: rgba(var(--brand-rgb), 0.12); --bs-nav-pills-link-active-color: var(--primary-color); }
.accordion { --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--ds-line); --bs-accordion-active-bg: var(--ds-bg-subtle); --bs-accordion-active-color: var(--ds-fg); --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.18); }
.progress { --bs-progress-bg: var(--ds-bg-muted); --bs-progress-border-radius: 999px; height: 0.5rem; }
.breadcrumb { --bs-breadcrumb-font-size: 0.85rem; --bs-breadcrumb-divider-color: var(--ds-fg-faint); --bs-breadcrumb-item-active-color: var(--ds-fg-muted); }
.pagination { --bs-pagination-bg: transparent; --bs-pagination-border-color: var(--ds-line); --bs-pagination-color: var(--ds-fg-2); --bs-pagination-hover-bg: var(--ds-bg-muted); --bs-pagination-active-bg: var(--brand); --bs-pagination-active-border-color: var(--brand); }

/* ---------- 4. App shell ------------------------------------------------------------------------- */
/* Navbar: translucent, blurred, hairline below. Beats navbar_theme_classes' bg-light / bg-dark. */
.navbar,
[data-bs-theme="dark"] .navbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: var(--ds-nav-bg) !important;
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--ds-line);
  box-shadow: none;
  min-height: 60px;
}
.navbar-brand { color: var(--ds-fg); font-weight: 600; letter-spacing: -0.02em; }
.navbar-nav .nav-item { margin-left: 0; margin-right: 0; }
.navbar-nav .nav-link,
.navbar .nav-link {
  color: var(--ds-fg-muted);
  font-size: 0.925rem;
  font-weight: 500;
  padding-left: 0.75rem !important;
  padding-right: 0.75rem !important;
  transition: color 0.15s ease;
}
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active { color: var(--ds-fg); }
.navbar-nav .nav-link.mk-nav-cta {
  color: var(--ds-fg);
  border: 1px solid var(--ds-line-strong);
  border-radius: 8px;
  padding: 0.35rem 0.85rem !important;
  margin-left: 0.5rem;
  background: var(--ds-bg-elevated);
  box-shadow: var(--ds-shadow-sm);
}
.navbar-nav .nav-link.mk-nav-cta:hover { background: var(--ds-bg-muted); }
.navbar-toggler { border-color: var(--ds-line-strong); border-radius: 8px; }

/* Sidebar: subtle surface, tinted active row instead of a solid brand block. */
.sidebar,
[data-bs-theme="dark"] .sidebar {
  background-color: var(--ds-bg-subtle);
  border-right: 1px solid var(--ds-line);
  top: 60px;
  height: calc(100vh - 60px);
}
.sidebar-nav .nav-link,
[data-bs-theme="dark"] .sidebar-nav .nav-link,
.sidebar-footer .nav-link,
[data-bs-theme="dark"] .sidebar-footer .nav-link {
  color: var(--ds-fg-muted);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 7px;
  padding: 0.45rem 0.7rem;
}
.sidebar-nav .nav-link:hover,
[data-bs-theme="dark"] .sidebar-nav .nav-link:hover,
.sidebar-footer .nav-link:hover,
[data-bs-theme="dark"] .sidebar-footer .nav-link:hover {
  background-color: var(--ds-bg-muted);
  color: var(--ds-fg);
}
.sidebar-nav .nav-link.active,
.sidebar-nav .nav-link.active:hover {
  background-color: rgba(var(--brand-rgb), 0.1);
  color: var(--primary-color);
}
.sidebar .accordion-button,
[data-bs-theme="dark"] .sidebar .accordion-button { background: transparent; color: var(--ds-fg-faint); font-size: 0.75rem; font-weight: 500; box-shadow: none; }
.sidebar .accordion-button:not(.collapsed),
[data-bs-theme="dark"] .sidebar .accordion-button:not(.collapsed) { background: transparent; color: var(--ds-fg-muted); }
.main-content { padding: 2rem; }
@media (max-width: 991.98px) { .main-content { padding: 1.25rem 1rem; } }

/* Footer: no band, hairline above, small muted links. */
footer,
.footer-section,
[data-bs-theme="dark"] footer {
  background-color: transparent !important;
  border-top: 1px solid var(--ds-line);
  color: var(--ds-fg-muted);
  font-size: 0.9rem;
}
footer h5, footer h6 { color: var(--ds-fg); font-size: 0.85rem; font-weight: 600; }
footer a { color: var(--ds-fg-muted) !important; text-decoration: none; }
footer a:hover { color: var(--ds-fg) !important; }

/* ---------- 5. Marketing (mk-*) ------------------------------------------------------------------ */
.mk { color: var(--ds-fg-2); }
.mk-container { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }
.mk-narrow { max-width: 760px; margin: 0 auto; }

.mk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ds-fg-muted);
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--ds-line);
  border-radius: 999px;
  background: var(--ds-bg-elevated);
  box-shadow: var(--ds-shadow-sm);
}
.mk-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), 0.18);
}
.mk-kicker { font-size: 0.8rem; font-weight: 600; color: var(--primary-color); letter-spacing: 0.02em; margin-bottom: 0.75rem; }

/* Hero: centered, brand glow from the top, faint grid fading out. */
.mk-hero {
  position: relative;
  overflow: hidden;
  padding: 7rem 0 4.5rem;
  text-align: center;
  isolation: isolate;
}
.mk-hero::before {
  content: "";
  position: absolute;
  inset: -120px -10% auto;
  height: 620px;
  z-index: -1;
  background:
    radial-gradient(ellipse 45% 55% at 50% 0%, rgba(var(--brand-rgb), var(--ds-glow)), transparent 72%),
    radial-gradient(ellipse 30% 40% at 72% 10%, rgba(var(--brand-bright-rgb), calc(var(--ds-glow) * 0.6)), transparent 70%);
  filter: blur(8px);
}
.mk-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--ds-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--ds-line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 50% at 50% 0%, #000 30%, transparent 75%);
  opacity: 0.6;
}
.mk-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 650;
  line-height: 1.04;
  letter-spacing: -0.045em;
  color: var(--ds-fg);
  max-width: 15ch;
  margin: 1.5rem auto 1.25rem;
  text-wrap: balance;
}
.mk-title .mk-accent {
  background: linear-gradient(120deg, var(--primary-color), rgba(var(--brand-bright-rgb), 0.9));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mk-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: var(--ds-fg-muted);
  max-width: 38rem;
  margin: 0 auto 2rem;
  text-wrap: pretty;
}
.mk-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.mk-note { margin-top: 1rem; font-size: 0.85rem; color: var(--ds-fg-faint); }

/* Product frame: the app's mock, in a soft window. */
.mk-frame {
  position: relative;
  margin: 4rem auto 0;
  max-width: 1040px;
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius-xl);
  background: var(--ds-bg-elevated);
  box-shadow: var(--ds-shadow-lg), 0 0 0 6px rgba(var(--brand-rgb), 0.04);
  overflow: hidden;
  text-align: left;
}
.mk-frame-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--ds-line);
  background: var(--ds-bg-subtle);
}
.mk-frame-bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--ds-line-strong); }
.mk-frame-body { padding: 1.5rem; }

/* Sections. */
.mk-section { padding: 6rem 0; }
.mk-section + .mk-section { border-top: 1px solid var(--ds-line); }
.mk-section-tight { padding: 4rem 0; }
.mk-head { text-align: center; max-width: 40rem; margin: 0 auto 3.5rem; }
.mk-head.mk-left { text-align: left; margin-left: 0; }
.mk-h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--ds-fg);
  margin-bottom: 0.9rem;
  text-wrap: balance;
}
.mk-head p { font-size: 1.075rem; color: var(--ds-fg-muted); margin: 0; text-wrap: pretty; }

/* Feature grid: hairline cells. Each cell draws its right and bottom line and overlaps the frame by 1px, so a
   short last row leaves page background, not a grey block. */
.mk-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius-xl);
  overflow: hidden;
}
.mk-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mk-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 991.98px) { .mk-grid, .mk-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575.98px) { .mk-grid, .mk-grid-2, .mk-grid-4 { grid-template-columns: 1fr; } }
.mk-cell {
  background: var(--ds-bg);
  padding: 2rem 1.75rem;
  margin: 0 -1px -1px 0;
  border-right: 1px solid var(--ds-line);
  border-bottom: 1px solid var(--ds-line);
  transition: background-color 0.2s ease;
}
.mk-cell:hover { background: var(--ds-bg-subtle); }
.mk-icon {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  font-size: 1.05rem;
  color: var(--primary-color);
  background: rgba(var(--brand-rgb), 0.1);
  border: 1px solid rgba(var(--brand-rgb), 0.18);
  margin-bottom: 1.1rem;
}
.mk-cell h3 { font-size: 1rem; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 0.4rem; color: var(--ds-fg); }
.mk-cell p { font-size: 0.95rem; line-height: 1.55; color: var(--ds-fg-muted); margin: 0; }
.mk-link { display: inline-flex; align-items: center; gap: 0.35rem; margin-top: 1rem; font-size: 0.9rem; font-weight: 500; color: var(--primary-color); text-decoration: none; }
.mk-link .bi { transition: transform 0.15s ease; }
.mk-link:hover .bi { transform: translateX(2px); }
.mk-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 1rem; }
.mk-chip { font-size: 0.75rem; font-weight: 500; color: var(--ds-fg-muted); padding: 0.2rem 0.55rem; border: 1px solid var(--ds-line); border-radius: 999px; background: var(--ds-bg-subtle); }

/* Steps: numbered, left to right. */
.mk-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; counter-reset: mk-step; }
.mk-step { counter-increment: mk-step; padding-top: 1.25rem; border-top: 1px solid var(--ds-line-strong); }
.mk-step::before {
  content: counter(mk-step, decimal-leading-zero);
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.75rem;
  font-variant-numeric: tabular-nums;
}
.mk-step h3 { font-size: 1.05rem; font-weight: 600; color: var(--ds-fg); margin-bottom: 0.35rem; }
.mk-step p { font-size: 0.95rem; color: var(--ds-fg-muted); margin: 0; }

/* Split: text one side, visual the other. */
.mk-split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
@media (max-width: 991.98px) { .mk-split { grid-template-columns: 1fr; gap: 2rem; } }
.mk-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.mk-list li { display: flex; align-items: baseline; gap: 0.75rem; padding: 0.4rem 0; color: var(--ds-fg-2); }
.mk-list li::before {
  content: "";
  flex-shrink: 0;
  width: 0.4rem;
  height: 0.7rem;
  border: solid var(--primary-color);
  border-width: 0 2px 2px 0;
  transform: translateY(-0.1rem) rotate(45deg);
}

/* Quote. */
.mk-quote { max-width: 44rem; margin: 0 auto; text-align: center; }
.mk-quote blockquote { font-size: clamp(1.25rem, 2.2vw, 1.6rem); line-height: 1.4; letter-spacing: -0.02em; color: var(--ds-fg); font-weight: 500; margin-bottom: 1rem; text-wrap: balance; }
.mk-quote figcaption { font-size: 0.9rem; color: var(--ds-fg-muted); }

/* Closing call to action: soft glow card, never a solid brand band. */
.mk-cta {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
  padding: 4.5rem 1.5rem;
  border: 1px solid var(--ds-line);
  border-radius: 24px;
  background: var(--ds-bg-subtle);
}
.mk-cta::before {
  content: "";
  position: absolute;
  inset: auto -20% -60% -20%;
  height: 120%;
  z-index: -1;
  background: radial-gradient(ellipse 50% 50% at 50% 100%, rgba(var(--brand-rgb), var(--ds-glow)), transparent 70%);
}
.mk-cta h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); font-weight: 650; letter-spacing: -0.035em; color: var(--ds-fg); margin-bottom: 0.75rem; text-wrap: balance; }
.mk-cta p { color: var(--ds-fg-muted); font-size: 1.075rem; max-width: 32rem; margin: 0 auto 2rem; }

/* ---------- 6. Motion ---------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .btn, .card, .mk-cell, .navbar-nav .nav-link { transition: none; }
}