/* ══════════════════════════════════════════════════════════
   klati.css — Complete rewrite. Modern, responsive, no legacy.
   Uses CSS custom properties, flexbox, grid.
   ══════════════════════════════════════════════════════════ */

/* ── Design tokens ── */
:root {
  --bg-primary: #010101;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --font-body: "Geologica", system-ui, sans-serif;
  --text-primary: #f0f0f0;
  --text-secondary: #9b9b9b;
  --text-muted: #5a5a5a;
  /* Inputs: between secondary + muted (single knob for header + /search/ placeholders) */
  --text-placeholder: #7e7e7e;
  --accent: #f21368;
  --accent-rgb: 242, 19, 104;
  --accent-hover: #f54080;
  --accent-dim: rgba(242, 19, 104, 0.12);
  /* Secondary accent — currently same as --accent (single-color scheme).
     Rename kept for easy reintroduction of a second color later.
     Role split: --accent = CTA / brand, --accent-secondary = nav / body links. */
  --accent-secondary: #f21368;
  --accent-secondary-rgb: 242, 19, 104;
  --accent-secondary-hover: #f54080;
  --border: #1e1e1e;
  --border-subtle: rgba(40, 40, 40, 0.6);
  --surface-dark: rgba(17, 17, 17, 0.5);
  --surface-hover: rgba(255, 255, 255, 0.03);
  --glass-highlight: rgba(255, 255, 255, 0.07);
  --glass-table-bg-start: rgba(21, 21, 21, 0.92);
  --glass-table-bg-end: rgba(9, 9, 9, 0.84);
  --parallax-x: 0px;
  --parallax-y: 0px;
  /* Breakpoint tokens — DOCUMENTARY ONLY.
     CSS @media cannot read custom properties; @custom-media would require
     dev-time resolution (Lightning CSS in build_css.js only runs on
     `npm run build`, not `npm run dev` which passthrough-copies raw source).
     Browsers lack native @custom-media support (Chrome flag-only, Safari no,
     Firefox behind pref). So every @media rule must hard-code the same
     literal — these tokens exist purely to declare the breakpoint names
     and values in one place for reviewers / grep-ability.
     JS code (klati.js matchMedia calls) also hard-codes the same literals.
     If you change a value here, grep for the literal across klati.css +
     klati.js + klaticalc-pro.css and update all sites. */
  --mobile-table: 600px;
  --calc: 640px;
  --desktop: 1024px;
  --nav-inline-min: 1320px;
  --brand-gold: #ffd700;
  --brand-gold-rgb: 255, 215, 0;
  /* napip.ai brand sweep — gold → magenta → violet → sky → gold */
  --gradient-napip: linear-gradient(
    90deg,
    #ffd700 0%,
    #f43f8e 25%,
    #a855f7 50%,
    #38bdf8 75%,
    #ffd700 100%
  );
  --notice-warn-link: rgb(214, 86, 82);
  --status-ok: #4caf50;
  --status-warn: #ff9800;
  /* --status-danger + --bg-card remapped via klaticalc-pro.css (--c-danger, --c-surface) — keep */
  --status-danger: #e05252;
  /* rgb triplet for alpha derivatives of --status-danger (notice, flag backgrounds) */
  --danger-rgb: 200, 30, 30;
  /* Text on solid/near-solid accent fill (chips, home-cta, kc primary button) */
  --text-on-accent: #ffffff;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  /* Cards, callouts, TOC shell, tables, search, article figures — one corner language (chips/code keep --radius-sm) */
  --radius-panel: var(--radius-md);
  /* Pill radius for toggle switches + always-rounded chips */
  --radius-pill: 999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --blur-medium: blur(12px);
  --glass-bg: rgba(8, 8, 8, 0.60);
  --glass-blur: var(--blur-medium);
  --content-max: 1400px;
  --toc-w: 220px;
  --gap: 2rem;
  --header-h: 60px;
  /* Must match .site-header--compact .site-header__inner height (anchor scroll offset) */
  --header-h-compact: 52px;
  --reading-progress-h: 2px;
  /* Sticky header + small gap so #hash targets are not hidden under chrome */
  --anchor-scroll-padding: calc(var(--header-h) + 0.75rem);
  --control-h: 2.2rem;
  --focus-outline: 2px solid rgba(var(--accent-rgb), 0.65);
  --focus-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.22);
  --icon-size-xs: 0.84em;
  --icon-size-sm: 1em;
  --icon-size-md: 1.2em;
  --icon-size-lg: 1.4em;
  --icon-size-xl: 1.62em;
  --chrome-bg:
    linear-gradient(
      55deg,
      rgba(var(--accent-rgb), 0.4) 0%,
      rgba(var(--accent-rgb), 0.06) 35%,
      transparent 55%
    ),
    rgba(10, 10, 10, 0.97);
  --chrome-border: 1px solid rgba(var(--accent-rgb), 0.18);
  --chrome-shadow:
    0 8px 20px rgba(0, 0, 0, 0.32), 0 1px 0 rgba(var(--accent-rgb), 0.08);
  --chrome-shadow-up:
    0 -8px 20px rgba(0, 0, 0, 0.32), 0 -1px 0 rgba(var(--accent-rgb), 0.08);
  --panel-soft-bg: linear-gradient(
    140deg,
    rgba(var(--accent-rgb), 0.4) 0%,
    var(--glass-table-bg-start) 35%,
    var(--glass-table-bg-end) 100%
  );
  --panel-soft-border: 1px solid var(--border-subtle);
  --panel-soft-blur: blur(14px) saturate(130%);
  --panel-soft-shadow:
    0 10px 36px rgba(0, 0, 0, 0.33), inset 0 1px 0 var(--glass-highlight),
    0 0 0 1px rgba(var(--accent-rgb), 0.06);
  --panel-medium-bg: var(--glass-bg);
  --panel-medium-border: 1px solid var(--border);
  --panel-medium-blur: var(--glass-blur);
  --panel-medium-shadow:
    0 12px 48px rgba(0, 0, 0, 0.5), 0 0 32px rgba(var(--accent-rgb), 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --panel-strong-bg:
    linear-gradient(148deg, rgba(var(--accent-rgb), 0.4) 0%, rgba(2, 2, 2, 0.60) 35%, rgba(0, 0, 0, 0.50) 100%),
    rgba(0, 0, 0, 0.35);
  --panel-strong-border: 1px solid rgba(var(--accent-rgb), 0.22);
  --panel-strong-blur: blur(22px) saturate(124%);
  --panel-strong-shadow:
    0 16px 44px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.07);
  --panel-opaque-bg: linear-gradient(148deg, rgba(16, 16, 16, 0.97) 0%, rgba(10, 10, 10, 0.95) 100%);
  /* Dropdown popover body (fills behind nav dropdown + kc-dropdown). Slightly
     thinner than --panel-opaque-bg (used for TOC/search), distinct enough that
     hover states on popover items don't bleed the TOC color language. */
  --panel-dropdown-bg: rgba(14, 14, 14, 0.88);
  /* Solid fallback for the drawer nav under its accent sweep (iOS Safari
     backdrop-blur flakiness means we need an opaque base). */
  --drawer-base: rgb(10, 10, 10);
  /* Floating sticky-thead + mobile sticky-col rail base */
  --sticky-thead-bg: rgb(6, 6, 7);
  --sticky-col-rail-rgb: 6, 6, 7;
  /* Control sizing (icon-button hit targets) */
  --control-size-sm: 32px;  /* compact (search-close) */
  --control-size-md: 36px;  /* default desktop (theme/search toggles, hamburger) */
  --control-size-lg: 42px;  /* mobile/tablet touch target */
  /* Stacking — document in frontend-layout.instructions.md */
  --z-skip: 5000;
  --z-header: 100;
  --z-header-control: 101;
  --z-popover: 50;
  --z-research-filters: 110;
  --z-toc-sticky: 115;
  --z-search-overlay: 200;
  --z-nav-drawer: 220;
  /* Sticky-thead clone stays below --z-header so the site header always covers it */
  --z-sticky-thead: 95;
  /* Local table stacking (edge fades + sticky first-col + its thead cell) */
  --z-table-edge: 4;
  --z-table-sticky-col: 2;
  --z-table-sticky-col-thead: 4;
  /* Reading-progress sliver inside the site header (local to header stack) */
  --z-reading-progress: 2;
  /* Search field slot (magnifier vs clear) */
  --z-search-slot-back: 1;
  --z-search-slot-mag: 2;
  --z-search-slot-clear: 3;
  /* Shared 120deg accent glass wash (summary / TOC / KlatiCalc shell) */
  --wash-accent-120: linear-gradient(
    120deg,
    rgba(var(--accent-rgb), 0.4) 0%,
    rgba(var(--accent-rgb), 0.04) 35%,
    transparent 58%
  );
}

/* ── Light theme token overrides ──
   Dark is the default (no attribute). Light activates via data-theme="light" on <html>. */
[data-theme="light"] {
  --bg-primary: #f5f5f5;
  --bg-secondary: #ebebeb;
  --bg-card: #e2e2e2;
  --text-primary: #0d0d0d;
  --text-secondary: #4a4a4a;
  --text-muted: #888888;
  --text-placeholder: #aaaaaa;
  /* Light-theme overrides for opaque surface tokens.
     Dropdown + drawer inherit the --bg-primary palette instead of the dark
     rgba(10,10,10,*) defaults. Sticky-thead matches the page background so
     the floating clone reads as a continuation of the article, not a dark tile. */
  --panel-dropdown-bg: rgba(250, 250, 250, 0.95);
  --drawer-base: var(--bg-primary);
  --sticky-thead-bg: var(--bg-primary);
  --sticky-col-rail-rgb: 245, 245, 245;
  --border: rgba(0, 0, 0, 0.12);
  --border-subtle: rgba(0, 0, 0, 0.08);
  --surface-dark: rgba(0, 0, 0, 0.05);
  --surface-hover: rgba(0, 0, 0, 0.05);
  --glass-highlight: rgba(255, 255, 255, 0.8);
  --glass-table-bg-start: rgba(235, 235, 235, 0.95);
  --glass-table-bg-end: rgba(248, 248, 248, 0.90);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --chrome-bg:
    linear-gradient(
      55deg,
      rgba(var(--accent-rgb), 0.18) 0%,
      rgba(var(--accent-rgb), 0.04) 35%,
      transparent 55%
    ),
    rgba(245, 245, 245, 0.97);
  --chrome-border: 1px solid rgba(var(--accent-rgb), 0.14);
  --chrome-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(var(--accent-rgb), 0.06);
  --chrome-shadow-up: 0 -4px 16px rgba(0, 0, 0, 0.08), 0 -1px 0 rgba(var(--accent-rgb), 0.06);
  --panel-soft-bg: linear-gradient(
    140deg,
    rgba(var(--accent-rgb), 0.14) 0%,
    rgba(235, 235, 235, 0.90) 35%,
    rgba(248, 248, 248, 0.85) 100%
  );
  --panel-soft-border: 1px solid rgba(0, 0, 0, 0.08);
  --panel-soft-shadow:
    0 8px 28px rgba(0, 0, 0, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 0 0 1px rgba(var(--accent-rgb), 0.05);
  --panel-medium-bg: rgba(255, 255, 255, 0.65);
  --panel-medium-border: 1px solid rgba(0, 0, 0, 0.10);
  --panel-medium-shadow:
    0 8px 32px rgba(0, 0, 0, 0.10), 0 0 24px rgba(var(--accent-rgb), 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --panel-strong-bg:
    linear-gradient(148deg, rgba(var(--accent-rgb), 0.14) 0%, rgba(242, 242, 242, 0.88) 35%, rgba(252, 252, 252, 0.82) 100%),
    rgba(255, 255, 255, 0.60);
  --panel-strong-border: 1px solid rgba(var(--accent-rgb), 0.16);
  --panel-opaque-bg: linear-gradient(148deg, rgba(238, 238, 238, 0.98) 0%, rgba(248, 248, 248, 0.97) 100%);
  --panel-strong-shadow:
    0 12px 36px rgba(0, 0, 0, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  --wash-accent-120: linear-gradient(
    120deg,
    rgba(var(--accent-rgb), 0.14) 0%,
    rgba(var(--accent-rgb), 0.04) 35%,
    transparent 58%
  );
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-primary);
  line-height: 1.15;
  -moz-tab-size: 4;
  tab-size: 4;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--anchor-scroll-padding);
}
html:has(.site-header--compact) {
  scroll-padding-top: calc(var(--header-h-compact) + 0.75rem);
}
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(
      55deg,
      rgba(var(--accent-rgb), 0.22) 0%,
      rgba(var(--accent-rgb), 0.12) 20%,
      rgba(var(--accent-rgb), 0.04) 44%,
      transparent 58%
    ),
    linear-gradient(235deg, rgba(var(--accent-rgb), 0.08) 0%, transparent 28%),
    radial-gradient(
      circle at calc(82% + var(--parallax-x)) calc(14% + var(--parallax-y)),
      rgba(var(--accent-rgb), 0.08) 0%,
      transparent 26%
    ),
    radial-gradient(
      circle at calc(12% - var(--parallax-x)) calc(78% - var(--parallax-y)),
      rgba(var(--accent-rgb), 0.06) 0%,
      transparent 24%
    ),
    radial-gradient(
      ellipse 120% 95% at calc(50% + (var(--parallax-x) * 0.6))
        calc(118% + (var(--parallax-y) * 0.5)),
      rgba(var(--accent-rgb), 0.08) 0%,
      transparent 62%
    ),
    var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: clamp(15px, 0.8vw + 12px, 18px);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}
html.nav-is-open,
body.nav-is-open,
html.search-overlay-open,
body.search-overlay-open {
  overflow: hidden;
  height: 100%;
}
/* iOS Safari breaks position:sticky under overflow:hidden — pin header above drawer */
html.nav-is-open .site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: calc(var(--z-nav-drawer) + 1);
}
/* Hide page-chrome sticky elements when drawer / search overlay is open —
   otherwise the TOC "CONTENTS" bar and the reading-progress sliver bleed
   through the drawer background (and remain focusable under the overlay). */
html.nav-is-open .toc-sidebar,
html.search-overlay-open .toc-sidebar,
html.nav-is-open .reading-progress,
html.search-overlay-open .reading-progress {
  visibility: hidden;
  pointer-events: none;
}
::selection {
  background-color: var(--accent);
  color: #000;
}
:where(ul, ol) {
  margin: 0;
  padding: 0;
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
:where(img, picture, svg, video, canvas) {
  max-width: 100%;
  height: auto;
  display: block;
}
:where(button, input, optgroup, select, textarea) {
  font: inherit;
  color: inherit;
}
textarea {
  resize: vertical;
}
:where([hidden]) {
  display: none !important;
}
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  vertical-align: middle;
  shape-rendering: geometricPrecision;
  text-rendering: geometricPrecision;
  transform: translateZ(0);
}
.icon--sm {
  font-size: var(--icon-size-sm);
}
.icon--xs {
  font-size: var(--icon-size-xs);
}
.icon--md {
  font-size: var(--icon-size-md);
}
.icon--lg {
  font-size: var(--icon-size-lg);
}
.icon--xl {
  font-size: var(--icon-size-xl);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ── Visually hidden ── */
.visually-hidden,
.sr-only {
  position: absolute !important;
  clip: rect(0, 0, 0, 0);
  height: 1px !important;
  width: 1px !important;
  padding: 0 !important;
  border: 0 !important;
  margin: -1px;
  overflow: hidden;
  white-space: nowrap;
}
/* Runtime hide utility (used by research-filter JS instead of writing
   inline style="display:none" on list items). */
.is-hidden {
  display: none !important;
}

/* Skip to main — first focusable; above header stack */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-skip);
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--panel-medium-bg);
  border: var(--panel-medium-border);
  border-radius: 0 0 var(--radius-panel) 0;
  box-shadow: var(--panel-medium-shadow);
  transform: translateY(-120%);
  transition:
    transform var(--transition),
    opacity var(--transition);
  opacity: 0;
  pointer-events: none;
}
.skip-link:focus {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
  outline: var(--focus-outline);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  .skip-link {
    transition: none;
  }
}

/* ── Animation ── */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
/* No transform — avoids a long-lived stacking context on `.content-grid` that traps TOC z-index */
@keyframes fadeInOpacity {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes searchOverlayIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═══════════════════════════════════════════════════════════
   HEADER / NAV
   ═══════════════════════════════════════════════════════════ */
.site-header {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  padding-top: env(safe-area-inset-top);
  z-index: var(--z-header);
  background: var(--chrome-bg);
  border-bottom: var(--chrome-border);
  box-shadow: var(--chrome-shadow);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  transition:
    background-color var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 1rem;
  height: var(--header-h);
  min-width: 0;
  transition: height var(--transition);
}
.site-header--compact .site-header__inner {
  height: var(--header-h-compact);
}

/* Brand / Logo */
.site-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-primary);
  white-space: nowrap;
  min-width: 0;
  flex: 0 1 auto;
}
.site-brand__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.site-brand::before {
  content: "🍌";
  font-size: 1.5rem;
  background: linear-gradient(
    120deg,
    var(--accent-hover) 0%,
    var(--accent) 50%,
    var(--accent-hover) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Desktop nav */
.site-nav {
  display: none;
  margin-left: 0;
}
/* Search toggle (mobile / tablet icon button) */
.search-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: var(--control-size-md);
  height: var(--control-size-md);
  padding: 0;
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  z-index: var(--z-header-control);
  transition: opacity var(--transition);
}
.search-toggle:hover {
  opacity: 0.75;
}
@media (max-width: 1319px) {
  .search-toggle {
    display: flex;
    width: var(--control-size-lg);
    height: var(--control-size-lg);
  }
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--control-size-md);
  height: var(--control-size-md);
  padding: 0;
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  z-index: var(--z-header-control);
  transition:
    color var(--transition),
    opacity var(--transition);
  flex-shrink: 0;
}
/* Tablet/mobile touch target — mirror critical CSS so the size is consistent
   across the async-loaded main stylesheet (prevents a post-hydration pop). */
@media (max-width: 1319px) {
  .theme-toggle {
    width: var(--control-size-lg);
    height: var(--control-size-lg);
  }
}
.theme-toggle:hover {
  color: var(--accent-hover);
  opacity: 0.85;
}
.theme-toggle__label {
  display: none;
}
[data-theme="light"] .theme-toggle .icon {
  transform: scaleX(-1);
}

/* Search form */
.site-search {
  display: none;
  flex: 0 1 260px;
  min-width: 0;
  max-width: 260px;
  margin: 0 0.65rem;
  position: relative;
}

/* Desktop (≥1320px): always visible inline */
@media (min-width: 1320px) {
  .site-search {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
  }
  .search-toggle {
    display: none;
  }
}

/* Tablet + mobile (<1320px): full-width expanded search overlay.
   Single rule for both viewports — tablet (1024–1319) and mobile (<1024) use
   identical overlay behavior; one query keeps the two in sync. */
@media (max-width: 1319px) {
  .site-search.is-open {
    display: flex;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: 0;
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
    padding: 0 0.75rem;
    align-items: center;
    background: var(--chrome-bg);
    z-index: var(--z-search-overlay);
  }
}

/* Close button inside expanded search */
.site-search__close {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: var(--control-size-sm);
  height: var(--control-size-sm);
  margin-right: 0.5rem;
  padding: 0;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition);
}
.site-search__close:hover {
  color: var(--accent);
}
.site-search.is-open .site-search__close {
  display: flex;
}
.site-search.is-open .site-search__bar {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.site-search.is-open .site-search__field {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
}
.site-search__bar {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.35rem;
  width: 100%;
  min-width: 0;
}
.site-search__field {
  position: relative;
  display: block;
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
}
/* Header search + full /search/ page: same field chrome, different sizing */
.site-search__input,
.search-page__input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition);
}
.site-search__input:focus,
.search-page__input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: none;
}
.site-search__input:focus-visible,
.search-page__input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus-shadow);
}
.site-search__input::placeholder,
.search-page__input::placeholder {
  color: var(--text-placeholder);
}
.site-search__input {
  min-height: var(--control-h);
  padding: 0.5rem 2.1rem 0.5rem 0.75rem;
  border-radius: var(--radius-panel);
  font-size: 0.85rem;
}
.site-search__icon,
.search-page__icon,
.search-clear {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}
.site-search__icon,
.search-page__icon {
  color: var(--accent);
  pointer-events: none;
  transition: opacity var(--transition);
}
.site-search__icon {
  right: 0.6rem;
  z-index: var(--z-search-slot-mag);
}
.search-page__icon {
  right: 0.85rem;
  z-index: var(--z-search-slot-mag);
}
.search-clear {
  right: 0.58rem;
  z-index: var(--z-search-slot-back);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition),
    visibility 0s linear 0.3s;
}
.search-clear.is-visible {
  z-index: var(--z-search-slot-clear);
  opacity: 0.95;
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity var(--transition),
    visibility 0s linear 0s;
}
.search-clear:hover {
  opacity: 1;
}
.site-search__input::-webkit-search-cancel-button,
.search-page__input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  appearance: none;
  display: none;
}
/* Magnifier hides when there is text OR when custom clear is shown (JS .is-visible; mobile WebKit can desync :placeholder-shown). */
.site-search__field:has(.search-clear.is-visible) .site-search__icon,
.site-search__input:not(:placeholder-shown) ~ .site-search__icon,
.search-page__form:has(.search-clear.is-visible) .search-page__icon,
.search-page__input:not(:placeholder-shown) ~ .search-page__icon {
  opacity: 0;
}
/* Icon link to full /search/ — desktop only; same row as input */
.site-search__page-btn {
  display: none;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin: 0;
  padding: 0;
  color: var(--accent);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-panel);
  background: transparent;
  cursor: pointer;
  transition:
    opacity var(--transition),
    background var(--transition),
    color var(--transition);
}
.site-search__page-btn:hover {
  background: var(--accent-dim);
  opacity: 1;
}
@media (min-width: 1320px) {
  .site-search__page-btn {
    display: inline-flex;
  }
}
.site-search__results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.45rem 0.5rem;
  background: var(--panel-strong-bg);
  border: var(--panel-strong-border);
  border-radius: var(--radius-panel);
  backdrop-filter: var(--panel-strong-blur);
  -webkit-backdrop-filter: var(--panel-strong-blur);
  max-height: 400px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  z-index: var(--z-popover);
  box-shadow: var(--panel-strong-shadow);
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}
/* Inline header search (≥1320px): no .is-open; show dropdown while field or results have focus */
@media (min-width: 1320px) {
  .site-search:focus-within .site-search__results:not(:empty) {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
}
/* Mobile / tablet overlay: results max-height = viewport minus header row, progress bar, gap */
@media (max-width: 1319px) {
  /* iOS Safari zooms focused inputs below 16px font-size */
  .site-search__input {
    font-size: 16px;
  }
  .site-search.is-open .site-search__results {
    display: block;
    min-height: calc(
      100dvh - var(--header-h) - var(--reading-progress-h) - 0.5rem -
        env(safe-area-inset-bottom, 0px)
    );
    max-height: calc(
      100dvh - var(--header-h) - var(--reading-progress-h) - 0.5rem -
        env(safe-area-inset-bottom, 0px)
    );
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-search.is-open .site-search__results:empty {
    display: block;
  }
}
@media (max-width: 1319px) and (prefers-reduced-motion: no-preference) {
  .site-search.is-open {
    animation: searchOverlayIn 0.2s ease both;
  }
  .site-search.is-open .site-search__bar,
  .site-search.is-open .site-search__close {
    animation: searchOverlayIn 0.2s ease both;
  }
}
@media (prefers-reduced-motion: reduce) {
  .site-search__results {
    transition: none;
  }
}
.site-search__results:empty {
  display: none;
}
.search-empty {
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}
/* Header dropdown + /search/: same soft panel card (tokens only) */
.search-result {
  position: relative;
  display: block;
  padding: 0.34rem 0.8rem 0.46rem;
  background: var(--panel-soft-bg);
  border: var(--panel-soft-border);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-soft-shadow);
  color: inherit;
  text-decoration: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  cursor: pointer;
}
.search-result:hover,
.search-result.is-active {
  border-color: rgba(var(--accent-rgb), 0.46);
  box-shadow:
    0 14px 30px rgba(var(--accent-rgb), 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}
.search-result:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-radius: var(--radius-panel);
  box-shadow: var(--focus-shadow);
}
.search-result__meta {
  display: inline-block;
  margin-bottom: 0.18rem;
  color: rgba(var(--accent-rgb), 0.92);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-shadow: 0 0 14px rgba(var(--accent-rgb), 0.2);
}
.search-result__title {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.88rem;
  display: block;
  margin-bottom: 0.12rem;
  line-height: 1.25;
}
.search-result__excerpt {
  color: var(--text-secondary);
  font-size: 0.78rem;
  line-height: 1.32;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.search-result__highlight {
  background: rgba(var(--accent-rgb), 0.22);
  color: var(--text-primary);
  padding: 0 0.12em;
  border-radius: 0.18em;
}
.search-page {
  max-width: 900px;
}
.search-page__form {
  position: relative;
  display: block;
  margin-bottom: 1rem;
}
.search-page__input {
  min-height: 3.1rem;
  padding: 0.85rem 2.4rem 0.85rem 1rem;
  border-radius: var(--radius-panel);
  font-size: 1rem;
}
.search-page__summary {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}
.search-page__results {
  display: grid;
  gap: 0.55rem;
}
@media (max-width: 600px) {
  .search-page__form {
    margin-bottom: 1rem;
  }
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-panel);
  padding: 0;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}
@media (min-width: 1320px) {
  .site-nav {
    display: flex;
    flex-direction: row;
    flex: 1 1 auto;
    min-width: 0;
    align-items: center;
    justify-content: flex-end;
  }
  .site-nav__list {
    justify-content: flex-end;
    flex-wrap: wrap;
    row-gap: 0.12rem;
    gap: 0.1rem;
    min-width: 0;
  }
  .site-nav__link,
  .site-nav__toggle {
    min-height: var(--control-h);
  }
  /* Inline bar: keep Topics compact; “Browse all” stays in drawer only + title tooltip */
  .site-nav__item--dropdown .site-nav__link--parent .site-nav__link-hint {
    display: none;
  }
  .site-nav__tagline {
    display: none;
  }
  .site-nav .theme-toggle {
    margin-left: 0.25rem;
  }
  /* Plain nav chips: center the anchor in the row */
  .site-nav__list > .site-nav__item:not(.site-nav__item--dropdown) {
    display: flex;
    align-items: center;
  }
  /* Dropdown row: same flex wrapper as plain items so the chip lines up in the bar */
  .site-nav__list > .site-nav__item--dropdown {
    display: flex;
    align-items: center;
  }
  /*
   * Topics split: stretch link + chevron to one height (plain links use padding + line box
   * and can exceed --control-h). A fixed toggle height + align-items:center looked misaligned.
   */
  .site-nav__item--dropdown .site-nav__split {
    align-items: stretch;
    min-height: var(--control-h);
  }
  .site-nav__item--dropdown .site-nav__link--parent {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: var(--control-h);
  }
  .site-nav__item--dropdown .site-nav__link--parent .site-nav__link-label {
    display: inline;
  }
  .site-nav__item--dropdown .site-nav__toggle {
    min-height: var(--control-h);
  }
}
.site-nav__split {
  display: flex;
  align-items: stretch;
  border-radius: var(--radius-sm);
}
.site-nav__link {
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition:
    color var(--transition),
    background var(--transition);
}
@media (min-width: 1320px) {
  .site-nav__link {
    padding: 0.38rem 0.58rem;
    font-size: 0.86rem;
  }
}
.site-nav__link:hover {
  color: var(--accent);
  background: var(--accent-dim);
}
.site-nav__link.is-current,
.site-nav__dropdown-link.is-current {
  color: var(--accent);
  background: transparent;
  box-shadow: none;
}
.site-brand:focus-visible,
.site-nav__link:focus-visible,
.site-nav__toggle:focus-visible,
.site-nav__dropdown-link:focus-visible,
.nav-toggle:focus-visible,
.search-toggle:focus-visible,
.site-search__close:focus-visible,
.site-search__page-btn:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
  box-shadow: var(--focus-shadow);
}
.site-brand:focus-visible,
.search-toggle:focus-visible,
.site-search__close:focus-visible,
.site-search__page-btn:focus-visible {
  border-radius: var(--radius-sm);
}
.site-nav__link-label {
  display: block;
}
.site-nav__link-hint {
  display: none;
}
.site-nav__link--parent {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.site-nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.35rem;
  padding: 0 0.7rem;
  color: var(--text-primary);
  background: transparent;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  border-left: 1px solid rgba(var(--accent-rgb), 0.18);
  transition:
    color var(--transition),
    background var(--transition);
  cursor: pointer;
}
.site-nav__toggle:hover {
  color: var(--accent);
  background: var(--accent-dim);
}
.site-nav__toggle-icon {
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  transition: transform var(--transition);
}

/* Dropdown */
.site-nav__item--dropdown {
  position: relative;
}
.site-nav__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  padding: 0.5rem 0;
  background: var(--panel-dropdown-bg);
  border: var(--panel-medium-border);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-medium-shadow);
  z-index: var(--z-popover);
  max-height: 70vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
}
/* Desktop: click-toggled via .is-open class */
.site-nav__item--dropdown.is-open > .site-nav__dropdown {
  display: block;
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.site-nav__item--dropdown.is-open > .site-nav__split .site-nav__toggle-icon,
.site-nav__item--dropdown.is-expanded
  > .site-nav__split
  .site-nav__toggle-icon {
  transform: rotate(225deg) translateY(1px);
}
.site-nav__item--dropdown.is-open > .site-nav__split .site-nav__link--parent,
.site-nav__item--dropdown.is-open > .site-nav__split .site-nav__toggle,
.site-nav__item--dropdown.is-expanded
  > .site-nav__split
  .site-nav__link--parent,
.site-nav__item--dropdown.is-expanded > .site-nav__split .site-nav__toggle {
  background: var(--accent-dim);
  color: var(--accent);
}
.site-nav__dropdown-link {
  display: block;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition:
    color var(--transition),
    background var(--transition);
}
.site-nav__dropdown-link:hover {
  color: var(--accent);
  background: var(--accent-dim);
}
.reading-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--reading-progress-h);
  z-index: var(--z-reading-progress);
  transform-origin: left center;
  transform: scaleX(0);
  background: linear-gradient(
    90deg,
    rgba(var(--accent-rgb), 0.85) 0%,
    rgba(var(--accent-rgb), 0.4) 100%
  );
  box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.4);
  pointer-events: none;
}

/* Hamburger toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: var(--control-size-md);
  height: var(--control-size-md);
  margin-left: auto;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: var(--z-header-control);
}
@media (min-width: 1320px) {
  .nav-toggle {
    display: none;
  }
}
.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
  transition:
    transform 0.3s,
    opacity 0.3s;
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Compact nav overlay scrim (hamburger + drawer below --nav-inline-min) */
@media (max-width: 1319px) {
  .site-nav::before {
    content: "";
    position: fixed;
    top: calc(var(--header-h) + env(safe-area-inset-top));
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.56) 0%,
      rgba(0, 0, 0, 0.24) 60%,
      transparent 100%
    );
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
  }
}

/* Compact nav drawer — full width; same chrome as .site-header, slightly more transparent */
@media (max-width: 1319px) {
  .site-nav {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: calc(var(--header-h) + env(safe-area-inset-top));
    bottom: 0;
    width: 100%;
    max-width: none;
    height: calc(100dvh - var(--header-h) - env(safe-area-inset-top));
    background:
      linear-gradient(
        55deg,
        rgba(var(--accent-rgb), 0.14) 0%,
        rgba(var(--accent-rgb), 0.06) 22%,
        transparent 45%
      ),
      var(--drawer-base);
    border-left: none;
    box-shadow: var(--chrome-shadow);
    backdrop-filter: var(--blur-medium);
    -webkit-backdrop-filter: var(--blur-medium);
    z-index: var(--z-nav-drawer);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.65rem 0.75rem calc(0.65rem + env(safe-area-inset-bottom)) 0.75rem;
    left: 0;
    right: 0;
    opacity: 0;
    transition:
      opacity 0.22s ease,
      visibility 0.3s ease 0.3s;
    visibility: hidden;
    pointer-events: none;
  }
  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition:
      opacity 0.22s ease,
      visibility 0s;
  }
  .site-nav.is-open::before {
    opacity: 0.4;
  }
  .site-nav .theme-toggle {
    width: 100%;
    height: auto;
    padding: 0.55rem 0.85rem;
    justify-content: flex-start;
    gap: 0.65rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: auto;
    z-index: auto;
  }
  .site-nav .theme-toggle__label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
  }
  .site-nav__tagline {
    margin-top: 0;
    padding-top: 0.85rem;
    padding-bottom: 0.5rem;
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
    text-align: center;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0.2rem;
    padding-top: 0;
    overflow: visible;
  }
  .site-nav__item,
  .site-nav__item--dropdown {
    display: block;
    width: 100%;
  }
  .site-nav__link {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    width: 100%;
    padding: 0.5rem 0.85rem;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    line-height: 1.25;
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    border-bottom: none;
    transition:
      color var(--transition),
      background var(--transition);
  }
  .site-nav__link:hover {
    color: var(--accent);
    background: var(--accent-dim);
  }
  .site-nav__split {
    width: 100%;
    gap: 0;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    box-shadow: none;
  }
  .site-nav__link--parent {
    flex: 1;
    display: inline-flex;
    flex-direction: row;
    align-items: baseline;
    flex-wrap: nowrap;
    gap: 0.35rem;
    border-radius: var(--radius-sm);
    background: transparent;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }
  .site-nav__link--parent .site-nav__link-label {
    display: inline;
  }
  .site-nav__link-hint {
    display: inline;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    text-transform: none;
    color: var(--text-secondary);
    opacity: 0.9;
  }
  .site-nav__link--parent .site-nav__link-hint::before {
    content: "·";
    margin-right: 0.3rem;
    opacity: 0.45;
    font-weight: 400;
  }
  .site-nav__toggle {
    min-width: 2.5rem;
    min-height: 2.75rem;
    padding: 0 0.65rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    border-left: 1px solid rgba(var(--accent-rgb), 0.18);
    position: relative;
    background: transparent;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }
  .site-nav__toggle::before {
    display: none;
  }
  .site-nav__item--dropdown {
    overflow: visible;
    border-bottom: none;
  }
  .site-nav__dropdown {
    position: static !important;
    display: none !important;
    margin: 0 !important;
    padding: 0.5rem 0 0 0 !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    max-height: none !important;
    width: 100% !important;
    overflow: visible !important;
    list-style: none !important;
    flex-direction: column !important;
    gap: 0 !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: none !important;
    transition: none !important;
  }
  .site-nav__item--dropdown.is-expanded > .site-nav__dropdown {
    display: flex !important;
  }
  .site-nav__dropdown-link {
    min-height: 2.5rem;
    padding: 0.4rem 1rem 0.4rem 1.15rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-left: none;
    margin-left: 0;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    width: 100%;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition:
      color var(--transition),
      background var(--transition);
  }
  .site-nav__dropdown-link:hover {
    color: var(--accent);
    background: var(--accent-dim);
  }
  .site-nav__dropdown-link:last-child {
    border-bottom: none;
  }
}

/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero {
  padding: 1.5rem 0 0.5rem;
  animation: fadeIn 0.4s both 0.1s;
}
.hero__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 1rem;
}
.hero__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  max-width: 14ch;
}

/* ═══════════════════════════════════════════════════════════
   CONTENT GRID — 2-column: article + toc
   ═══════════════════════════════════════════════════════════ */
.content-grid {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1rem;
  animation: fadeInOpacity 0.4s both 0.2s;
}

/* Desktop (≥1024px): 2-column grid (mobile TOC `order: -1` lives in the
   TOC SIDEBAR section — keep selector declarations co-located). */
@media (min-width: 1024px) {
  .content-grid {
    display: grid;
    grid-template-columns: 1fr var(--toc-w);
  }
  .toc-sidebar {
    order: 0;
  }
  /* When expanded, detach the TOC from content-grid and pin it to the
     viewport — same rationale as mobile: sticky releases when the grid
     bottom enters view, causing the TOC panel to extend into the footer
     area on short pages. Fixed keeps the TOC in its right-column slot
     for the entire scroll duration. The grid template still reserves
     --toc-w on the right, so the article column width is unchanged. */
  .toc-sidebar:has(.toc:not(.is-collapsed)) {
    position: fixed;
    top: calc(var(--header-h) + 1rem);
    right: max(1rem, calc((100vw - var(--content-max)) / 2 + 1rem));
    width: var(--toc-w);
    height: calc(100vh - var(--header-h) - 2rem);
    max-height: calc(100vh - var(--header-h) - 2rem);
  }
}

/* Wide layout for splash pages */
.content-grid--wide {
  max-width: 900px;
}
.content-grid--wide .article {
  grid-column: 1 / -1;
}

/* ═══════════════════════════════════════════════════════════
   AUTHOR CARD — compact inline at top of article
   ═══════════════════════════════════════════════════════════ */
.author-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.author-card__info {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.75rem;
  min-width: 0;
  flex: 1 1 auto;
}
.author-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}
.author-card__bio {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
  min-width: 0;
  flex: 1 1 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.author-card__links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.author-card__links li a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.author-card__links li a:hover {
  color: var(--accent);
}
/* On small screens: stack info vertically, hide bio, show only first two links */
@media (max-width: 600px) {
  .author-card__info {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }
  .author-card__bio {
    display: none;
  }
  .author-card__links li:nth-child(n + 3) {
    display: none;
  }
}

/* napip.ai gold link */
.author-card__links a[href*="napip.ai"] {
  color: var(--brand-gold) !important;
  transition:
    background-position 0.7s ease,
    filter 0.3s ease,
    text-shadow 0.3s ease;
  background-image: var(--gradient-napip);
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 0% center;
}
.author-card__links a[href*="napip.ai"]:hover {
  background-position: 100% center;
  filter: brightness(1.1);
  text-shadow: none;
}

/* ═══════════════════════════════════════════════════════════
   TOC SIDEBAR
   ═══════════════════════════════════════════════════════════ */
.toc-sidebar {
  min-width: 0;
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  align-self: start;
  max-height: calc(100vh - var(--header-h) - 2rem);
  display: flex;
  flex-direction: column;
  z-index: var(--z-toc-sticky);
}
/* Mobile: TOC renders above the article via flex order. Scoped to mobile
   only — desktop resets to normal grid placement (`1fr var(--toc-w)` puts
   the TOC on the right); leaving `order: -1` unscoped here would override
   the desktop reset because this selector is later in source than the
   desktop @media above. */
@media (max-width: 1023px) {
  .toc-sidebar {
    order: -1;
  }
}

.toc {
  position: relative;
  background: var(--panel-opaque-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-panel);
  backdrop-filter: var(--panel-soft-blur);
  -webkit-backdrop-filter: var(--panel-soft-blur);
  box-shadow:
    0 10px 34px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 var(--glass-highlight),
    0 0 0 1px rgba(var(--accent-rgb), 0.08);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.toc::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: var(--wash-accent-120);
}
@media (max-width: 1023px) {
  /* Stick TOC flush under the site header on mobile/tablet layouts.
     Desktop keeps the 1rem breathing room because the TOC lives in the
     sidebar column with no horizontal overlap with article content.
     On mobile the TOC is full-width above the article, so any gap lets
     article text bleed between the header bottom and the TOC top as the
     page scrolls under the sticky header. Match --header-h in both the
     expanded and compact header modes so the handoff stays flush. */
  .toc-sidebar {
    top: var(--header-h);
    max-height: calc(100vh - var(--header-h));
    width: 100%;
  }
  html:has(.site-header--compact) .toc-sidebar {
    top: var(--header-h-compact);
    max-height: calc(100vh - var(--header-h-compact));
  }
  .toc {
    /* Solid base color under the gradient — --panel-opaque-bg is a
       97%-opaque gradient which let article text bleed through on mobile
       (especially when the TOC is expanded and overlaps the article). */
    background-color: var(--bg-primary);
    background-image: var(--panel-opaque-bg);
    backdrop-filter: var(--panel-medium-blur);
    -webkit-backdrop-filter: var(--panel-medium-blur);
  }
  /* When expanded on mobile, detach from content-grid (position:fixed) so
     the TOC doesn't slide up when the footer enters view. Sticky would
     release as content-grid's bottom approaches and the TOC would scroll
     with the page, revealing article tail / footer below it. Fixed pins
     the TOC to the viewport for the whole duration it's open. */
  .toc-sidebar:has(.toc:not(.is-collapsed)) {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    width: 100%;
    height: calc(100vh - var(--header-h));
    max-height: calc(100vh - var(--header-h));
    z-index: var(--z-toc-sticky);
  }
  html:has(.site-header--compact) .toc-sidebar:has(.toc:not(.is-collapsed)) {
    top: var(--header-h-compact);
    height: calc(100vh - var(--header-h-compact));
    max-height: calc(100vh - var(--header-h-compact));
  }
  .toc:not(.is-collapsed) {
    flex: 1;
    min-height: 0;
  }
}
button.toc__header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75em;
  width: 100%;
  margin: 0;
  padding: 0.55em 0.75em;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
  color: inherit;
  border-radius: var(--radius-panel) var(--radius-panel) 0 0;
  transition:
    background var(--transition),
    box-shadow var(--transition);
}
button.toc__header:hover {
  background: rgba(var(--accent-rgb), 0.06);
}
button.toc__header:focus-visible {
  outline: var(--focus-outline);
  outline-offset: -2px;
  box-shadow: var(--focus-shadow);
}
.toc__title {
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0;
  margin: 0;
  border-bottom: none;
  flex: 1;
  display: flex;
  align-items: center;
  pointer-events: none;
}
.toc__title span {
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
}
.toc__state {
  flex-shrink: 0;
  appearance: none;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  color: var(--text-secondary);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  line-height: 1;
  padding: 0.35em 0.55em;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  pointer-events: none;
  transition:
    color var(--transition),
    border-color var(--transition),
    background-color var(--transition),
    box-shadow var(--transition);
}
button.toc__header:hover .toc__state {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.12);
}
.toc.is-collapsed .toc__menu {
  display: none;
}

.toc__menu {
  margin: 0;
  padding: 0;
  font-size: 0.84rem;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
.toc__menu a {
  display: block;
  padding: 0.38rem 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.5;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition:
    color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}
.toc__menu a:hover {
  color: var(--accent);
  background: linear-gradient(
    90deg,
    rgba(var(--accent-rgb), 0.16) 0%,
    rgba(var(--accent-rgb), 0.06) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.2);
}
.toc__menu ol,
.toc__menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.toc__menu ol ol a,
.toc__menu ul ul a {
  padding-left: 1.6em;
  font-weight: 400;
}
.toc__menu ol ol ol a,
.toc__menu ul ul ul a {
  padding-left: 2.4em;
}
.toc__menu ol ol ol ol a,
.toc__menu ul ul ul ul a {
  padding-left: 3.2em;
}

/* ═══════════════════════════════════════════════════════════
   ARTICLE
   ═══════════════════════════════════════════════════════════ */
.article {
  min-width: 0;
  max-width: 100%;
}
.article__meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  margin-bottom: 1rem;
  padding: 0;
  background: none;
  border-left: none;
  border-radius: 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}
@media (max-width: 600px) {
  .article__meta {
    gap: 0.5rem;
    font-size: 0.75rem;
    flex-wrap: nowrap;
    margin-top: 1rem;
    margin-bottom: 0.75rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .article__date::after,
  .article__readtime::after {
    margin: 0 0.4rem;
  }
}
.article__date,
.article__readtime,
.article__updated {
  display: inline;
  font-weight: 400;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.article__date::after,
.article__readtime::after {
  content: "·";
  margin: 0 0.6rem;
  opacity: 0.5;
}
.article__date:last-child::after,
.article__readtime:last-child::after,
.article__updated:last-child::after {
  display: none;
}
.article__updated {
  color: var(--text-secondary);
  font-style: italic;
}

.article__body {
  font-size: 1rem;
  line-height: 1.7;
}
.article-summary {
  position: relative;
  margin: 0.25rem 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  align-items: stretch;
  border-radius: var(--radius-panel);
  border: var(--panel-soft-border);
  overflow: hidden;
  background: var(--panel-soft-bg);
  box-shadow: var(--panel-soft-shadow);
  font-size: 0.85rem;
}
.article-summary::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--wash-accent-120);
}
.article-summary__title {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0.55em 0.75em;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  text-align: left;
  font-size: 0.85em;
  font-weight: 600;
  letter-spacing: 0.07em;
  line-height: 1.35;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--text-primary) 82%, var(--accent) 18%);
  background: linear-gradient(
    155deg,
    rgba(var(--accent-rgb), 0.4) 0%,
    rgba(var(--accent-rgb), 0.05) 35%,
    color-mix(in srgb, var(--bg-secondary) 94%, transparent) 55%,
    rgba(8, 8, 8, 0.92) 100%
  );
  box-shadow: inset 0 -1px 0 rgba(var(--accent-rgb), 0.16);
}
.article-summary__text {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0.55em 0.75em;
  color: var(--text-primary);
  font-size: 1em;
  line-height: 1.55;
  border-bottom: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.article__body h2 {
  margin-top: 2.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.75rem);
  line-height: 1.2;
}
.article__body h3 {
  margin-top: 2rem;
  font-size: clamp(1.05rem, 1.2vw + 0.5rem, 1.3rem);
  color: var(--text-primary);
  line-height: 1.25;
}
.article__body h4 {
  margin-top: 1.5rem;
  color: var(--text-secondary);
}
.article__body p {
  margin: 0 0 1.2em;
  color: var(--text-primary);
  line-height: 1.7;
}
.article__body ul:not(.posts-list) {
  list-style: disc;
  padding-left: 1.5em;
  margin-bottom: 1.2em;
}
.article__body ol {
  list-style: decimal;
  padding-left: 1.5em;
  margin-bottom: 1.2em;
}
.article__body li {
  margin-bottom: 0.3em;
  color: var(--text-primary);
  line-height: 1.7;
}
.article__body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}
.article__body img {
  border-radius: var(--radius-panel);
}

/* Article layout utilities — use in Markdown instead of inline flex/width styles */
.article__body .article-split {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
  align-items: flex-start;
  justify-content: center;
}
.article__body .article-split__figure {
  flex: 1 1 220px;
  max-width: 350px;
  min-width: 0;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  isolation: isolate;
  border-radius: var(--radius-lg);
  padding: 6px;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.13) 0%,
    rgba(255, 255, 255, 0.04) 40%,
    rgba(var(--accent-rgb), 0.06) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.45),
    0 2px 8px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(var(--accent-rgb), 0.06);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  transition: box-shadow var(--transition), transform var(--transition);
}
.article__body .article-split__figure::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.10) 0%,
    transparent 50%
  );
  z-index: 1;
}
.article__body .article-split__figure:hover {
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.55),
    0 4px 12px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(var(--accent-rgb), 0.12),
    0 0 24px rgba(var(--accent-rgb), 0.08);
  transform: translateY(-2px);
}
.article__body .article-split__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 4px);
  display: block;
}
[data-theme="light"] .article__body .article-split__figure {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.75) 0%,
    rgba(255, 255, 255, 0.45) 40%,
    rgba(var(--accent-rgb), 0.04) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.12),
    0 2px 8px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 0 0 1px rgba(var(--accent-rgb), 0.05);
}
[data-theme="light"] .article__body .article-split__figure:hover {
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.16),
    0 4px 12px rgba(0, 0, 0, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.98),
    0 0 0 1px rgba(var(--accent-rgb), 0.10);
}
/* Liquid glass for all article images except those already framed by .article-split__figure */
.article__body img:not(.article-split__figure img) {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  padding: 6px;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.13) 0%,
    rgba(255, 255, 255, 0.04) 40%,
    rgba(var(--accent-rgb), 0.06) 100%
  );
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.45),
    0 2px 8px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.10),
    0 0 0 1px rgba(var(--accent-rgb), 0.06);
  transition: box-shadow var(--transition), transform var(--transition);
}
.article__body img:not(.article-split__figure img):hover {
  transform: translateY(-2px);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.55),
    0 4px 12px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 0 0 1px rgba(var(--accent-rgb), 0.12),
    0 0 24px rgba(var(--accent-rgb), 0.08);
}
[data-theme="light"] .article__body img:not(.article-split__figure img) {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.75) 0%,
    rgba(255, 255, 255, 0.45) 40%,
    rgba(var(--accent-rgb), 0.04) 100%
  );
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.12),
    0 2px 8px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 0 0 1px rgba(var(--accent-rgb), 0.05);
}

.article__body .article-split__text {
  flex: 1 1 280px;
  min-width: 0;
}
.article__body .article-caption {
  margin: 0.5rem 0 0;
  text-align: center;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--text-secondary);
}

/* Gated / splash empty state (no inline styles) */
.splash-message {
  margin: 0 auto;
  padding: 4rem 1rem;
  max-width: 36rem;
  text-align: center;
}
.splash-message h2 {
  margin: 0 0 0.5rem;
}
.splash-message p {
  margin: 0;
  color: var(--text-secondary);
}

/* Links — body links use --accent-secondary (nav role). CTAs (.btn, .attention-link)
   keep --accent (brand/conversion role). See :root role-split note. */
.article__body a:not(.btn):not(.attention-link):not(.search-result) {
  color: var(--accent-secondary);
  border-bottom: 1px solid rgba(var(--accent-secondary-rgb), 0.3);
  transition:
    color var(--transition),
    border-color var(--transition);
}
.article__body a:not(.btn):not(.attention-link):not(.search-result):hover {
  color: var(--accent-secondary-hover);
  border-bottom-color: var(--accent-secondary);
}

/* Anchor links on headings */
.article__body .header-link {
  margin-left: 0.4em;
  opacity: 0;
  font-size: 0.8em;
  transition: opacity 0.2s;
}
.article__body h2:hover .header-link,
.article__body h3:hover .header-link,
.article__body h4:hover .header-link {
  opacity: 1;
}

/* Code */
.article__body code {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 0.85em;
  padding: 0.1em 0.4em;
}
.article__body pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1em;
  overflow-x: auto;
  margin-bottom: 1.5em;
}
.article__body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

/* Blockquote */
.article__body blockquote {
  border-left: 2px solid var(--accent);
  background: var(--surface-hover);
  padding: 0.5em 1em;
  border-radius: 0 var(--radius-panel) var(--radius-panel) 0;
  font-style: normal;
  color: var(--text-secondary);
  margin: 1em 0;
}

/* Tables
   table-layout: auto is intentional (ADR-01 in frontend-layout.instructions.md).
   Post content has highly variable column widths; `fixed` would require explicit
   per-column widths (colgroup or inline) on every table to avoid truncation.
   Do not change to `fixed` without also introducing colgroup widths on every
   table (and updating ADR-01). */
.article__body table {
  position: relative;
  display: table;
  table-layout: auto;
  width: 100%;
  font-size: 0.85rem;
  border-collapse: collapse;
  margin-top: 1.5em;
  margin-bottom: 1.5em;
  background: var(--panel-soft-bg);
  border: var(--panel-soft-border);
  border-radius: var(--radius-panel);
  overflow: hidden;
  box-shadow: var(--panel-soft-shadow);
}
.article__body table::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--wash-accent-120);
}
.article__body thead {
  position: relative;
  z-index: 1;
  background: linear-gradient(
    155deg,
    rgba(var(--accent-rgb), 0.4) 0%,
    rgba(var(--accent-rgb), 0.05) 35%,
    color-mix(in srgb, var(--bg-secondary) 94%, transparent) 55%,
    rgba(8, 8, 8, 0.92) 100%
  );
  box-shadow: inset 0 -1px 0 rgba(var(--accent-rgb), 0.16);
}
.article__body th,
.article__body td {
  position: relative;
  padding: 0.4em 0.7em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
  vertical-align: top;
  color: var(--text-primary);
}
.article__body th {
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--text-primary) 82%, var(--accent) 18%);
  background: transparent;
  border-bottom-color: rgba(var(--accent-rgb), 0.18);
}
.article__body tr:last-child td {
  border-bottom: none;
}
.article__body tbody tr {
  transition:
    background var(--transition),
    box-shadow var(--transition);
}
.article__body tbody tr:hover {
  background: linear-gradient(
    90deg,
    rgba(var(--accent-rgb), 0.14) 0%,
    rgba(var(--accent-rgb), 0.06) 100%
  );
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.18);
}
/* Tabular numerals on data cells so columns of numbers align */
.article__body td {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* Scroll wrapper (added by klati.js): decorative host for edge shadows,
   swipe hint, focus region. Horizontal scroll stays on the <table> itself
   (see mobile rule) so that sticky thead can resolve the page viewport as
   its vertical scroll ancestor — otherwise wrapper's promoted overflow-y
   pins thead inside the wrapper. */
.table-scroll {
  position: relative;
  margin: 1.5em 0;
}
.table-scroll:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
  box-shadow: var(--focus-shadow);
}
.table-scroll > table {
  margin: 0;
}
/* Edge shadows overlay the wrapper's visible left/right edges. Opacity gated
   on overflow + at-start/at-end classes set by klati.js. Shadow color is
   derived from --bg-primary via color-mix so it picks up the page's dark
   character instead of raw #000 — reads as more integrated with the table's
   own panel-soft surface, while still providing clear "more content" cue.
   The soft accent-tinted inner edge (1px, via second color stop) subtly
   echoes the sticky-first-col's accent divider language. */
.table-scroll::before,
.table-scroll::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 22px;
  pointer-events: none;
  z-index: var(--z-table-edge);
  opacity: 0;
  transition: opacity 0.18s ease;
}
.table-scroll::before {
  left: 0;
  background: linear-gradient(
    to right,
    color-mix(in srgb, var(--bg-primary) 62%, transparent) 0,
    rgba(var(--accent-rgb), 0.06) 1px,
    color-mix(in srgb, var(--bg-primary) 45%, transparent) 4px,
    transparent 100%
  );
  border-top-left-radius: var(--radius-panel);
  border-bottom-left-radius: var(--radius-panel);
}
.table-scroll::after {
  right: 0;
  background: linear-gradient(
    to left,
    color-mix(in srgb, var(--bg-primary) 62%, transparent) 0,
    rgba(var(--accent-rgb), 0.06) 1px,
    color-mix(in srgb, var(--bg-primary) 45%, transparent) 4px,
    transparent 100%
  );
  border-top-right-radius: var(--radius-panel);
  border-bottom-right-radius: var(--radius-panel);
}
.table-scroll.is-overflowing:not(.is-at-start)::before,
.table-scroll.is-overflowing:not(.is-at-end)::after {
  opacity: 1;
}
@media (prefers-reduced-motion: reduce) {
  .table-scroll::before,
  .table-scroll::after {
    transition: none;
  }
}
/* Floating sticky thead — cloned into this container by klati.js and pinned
   under the site header while the source table is being scrolled through.
   The inner <table> inherits all .article__body table / thead / th styles
   via normal cascade (container is appended inside .table-scroll which is
   inside .article__body). We only override what's specific to the floating
   context: positioning, scrollbar visibility, container chrome. */
.table-scroll__sticky-head {
  position: fixed;
  z-index: var(--z-sticky-thead);
  overflow-x: auto;
  overflow-y: hidden;
  pointer-events: none;
  scrollbar-width: none;
  border-radius: var(--radius-panel) var(--radius-panel) 0 0;
  /* Opaque backdrop blocks any source-table content that would otherwise
     bleed through at corners / 1px gaps (e.g. inside border-radius arcs). */
  background-color: var(--sticky-thead-bg);
  /* 1px gradient strip replicates source table's border-left color without
     using border-left (border + border-radius would create a curved corner
     artifact that reads as a spurious horizontal line in the first col).
     padding-left:1px shifts the padding edge to wrapRect+1px so sticky
     left:0 on the first column resolves to the same pixel as the source
     table's padding edge — eliminating the 1px scroll misalignment. */
  padding-left: 1px;
  background-image: linear-gradient(
    to right,
    var(--border-subtle) 1px,
    transparent 1px
  );
  box-shadow: 0 8px 14px rgba(0, 0, 0, 0.32);
  /* No mount animation — source thead slides under the sticky site header,
     clone appears instantly at the same x just below the header. Adding a
     slide/fade layers extra motion on top of the handoff and reads as a
     jump. Any transition here would fight the natural scroll continuity. */
}
.table-scroll__sticky-head::-webkit-scrollbar {
  display: none;
}
/* Reset the margin + framing inherited from .article__body table.
   - margin: 0 so thead sits flush against container top/left.
   - border-left: none — container carries the 1px border-left instead
     (shifts container padding edge to match source table's padding edge so
     sticky left:0 on first col resolves to the same pixel in both).
   - border-top: none — clone has its own top radius + shadow.
   - border-right kept — last col's right edge should still show the panel
     border when scrolled to the far right.
   - border-bottom kept — separates thead from the gap below the clone. */
.article__body .table-scroll__sticky-head > table {
  margin: 0;
  border-radius: 0;
  border-left: none;
  border-top: none;
}
/* The ::before wash on the source table would paint again on the clone;
   suppress it in the floating context. */
.table-scroll__sticky-head > table::before {
  content: none;
}
/* On mobile, .article__body table becomes display:block + overflow-x:auto
   — that cascades onto the clone's inner table and makes IT the horizontal
   scroll ancestor, breaking sticky-first-col (which would then bind to the
   non-scrolling clone table instead of the clone container). Lock the clone
   table back to normal table display at all viewports. */
.article__body .table-scroll__sticky-head > table {
  display: table;
  overflow: visible;
}
/* Swipe hint chip — shown only when overflowing, dismissed on scroll or after timeout */
.table-scroll__hint {
  position: absolute;
  top: 0.4rem;
  right: 0.55rem;
  /* One layer above the edge fades so the chip always reads on top of the
     scroll indicator. Local to the table stack. */
  z-index: calc(var(--z-table-edge) + 1);
  padding: 0.18em 0.6em;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-on-accent);
  background: rgba(var(--accent-rgb), 0.85);
  border-radius: var(--radius-pill);
  pointer-events: none;
  opacity: 0;
  transform: translateY(-3px);
  transition:
    opacity 0.22s ease,
    transform 0.22s ease;
}
.table-scroll.is-overflowing .table-scroll__hint {
  opacity: 1;
  transform: translateY(0);
}
.table-scroll.is-hint-dismissed .table-scroll__hint {
  opacity: 0;
  transform: translateY(-3px);
}
@media (prefers-reduced-motion: reduce) {
  .table-scroll__hint {
    transition: none;
  }
}

/* Mobile tables: horizontal scroll stays on the <table> (display:block) so
   sticky first-col resolves a real horizontal scroll ancestor and sticky
   thead resolves the page as its vertical scroll ancestor. */
@media (max-width: 600px) {
  .article__body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    overscroll-behavior-y: auto;
    touch-action: auto;
    font-size: 0.78rem;
    border-radius: var(--radius-panel);
  }
  .article__body table::-webkit-scrollbar {
    height: 7px;
  }
  .article__body table::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 999px;
  }
  .article__body table::-webkit-scrollbar-thumb {
    background: rgba(var(--accent-rgb), 0.4);
    border-radius: 999px;
  }
  .article__body th,
  .article__body td {
    min-width: 120px;
    padding: 0.55em 0.65em;
    line-height: 1.35;
  }
  /* No global table wash on mobile — only the sticky first column keeps a gradient. */
  .article__body table::before {
    content: none;
  }
  /*
   * Sticky first column: opaque 90deg gradient on first col only.
   * Other columns: dark translucent fills aligned with gradient tail (rgb(8,8,9) → rgb(6,6,7)).
   */
  .article__body thead {
    background: rgba(var(--sticky-col-rail-rgb), 0.78);
    box-shadow: inset 0 -1px 0 rgba(var(--accent-rgb), 0.16);
  }
  .article__body th:not(:first-child),
  .article__body td:not(:first-child) {
    background-color: rgba(var(--sticky-col-rail-rgb), 0.82);
    background-image: none;
  }
  .article__body tbody tr:hover {
    background: rgba(var(--sticky-col-rail-rgb), 0.52);
    box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.14);
  }
  .article__body th:first-child,
  .article__body td:first-child {
    position: sticky;
    left: 0;
    z-index: var(--z-table-sticky-col);
    width: auto;
    min-width: 138px;
    /*
     * Opaque 90deg rail: accent on the left, ramp toward the rail base with
     * a touch of alpha at the right edge so the rail still reads as part of
     * the same dark surface as the rest of the table (not a solid tile).
     */
    background: linear-gradient(
      90deg,
      color-mix(in srgb, rgb(var(--accent-rgb)) 10%, rgb(var(--sticky-col-rail-rgb))) 0%,
      color-mix(in srgb, rgb(var(--accent-rgb)) 6.5%, rgb(var(--sticky-col-rail-rgb))) 47%,
      color-mix(in srgb, rgb(var(--accent-rgb)) 3.5%, rgb(var(--sticky-col-rail-rgb))) 69%,
      rgba(var(--sticky-col-rail-rgb), 0.88) 88%,
      rgba(var(--sticky-col-rail-rgb), 0.88) 92%,
      rgba(var(--sticky-col-rail-rgb), 0.88) 100%
    );
    /*
     * Two inset box-shadows only — no outer drop shadow on mobile.
     * 1. Inset LEFT 1px — replaces the table's panel border-left when the
     *    table is scrolled (first col is now the visible left edge).
     * 2. Inset RIGHT 1px accent — per-cell divider that travels with the
     *    sticky cell; replaces border-right which would be owned by col2
     *    under border-collapse:collapse.
     * Outer drop shadow omitted: on iOS Safari, box-shadow on a sticky cell
     * inside display:block/-webkit-overflow-scrolling:touch is promoted to a
     * GPU compositing layer and paints at the wrong z-order, producing a
     * visible artifact. The .table-scroll::before/::after pseudo-elements
     * already supply the "more content" scroll cue from the wrapper side.
     */
    box-shadow:
      inset 1px 0 0 var(--border-subtle),
      inset -1px 0 0 rgba(var(--accent-rgb), 0.28);
  }
  .article__body thead th:first-child {
    z-index: var(--z-table-sticky-col-thead);
  }
}

/* Notice / callout boxes (only --info and --danger variants are emitted by content;
   --primary / --warning / --success and .markdown-alert-* were never rendered
   and were removed in the frontend audit). */
.notice,
.notice--info,
.notice--danger {
  margin: 1.5em 0;
  padding: 1em;
  font-size: 0.85rem;
  background: var(--panel-soft-bg);
  border: var(--panel-soft-border);
  border-radius: var(--radius-panel);
  color: var(--text-primary);
  box-shadow: var(--panel-soft-shadow);
}
.notice--info {
  border: 1px solid rgba(var(--accent-rgb), 0.22);
  background:
    linear-gradient(
      140deg,
      rgba(var(--accent-rgb), 0.1) 0%,
      rgba(var(--accent-rgb), 0.03) 100%
    ),
    var(--panel-soft-bg);
}
.notice--danger {
  background:
    linear-gradient(
      140deg,
      color-mix(in srgb, var(--status-danger) 22%, var(--bg-primary)) 0%,
      color-mix(in srgb, var(--status-danger) 10%, var(--bg-primary)) 100%
    ),
    var(--panel-soft-bg);
}
.notice--info h4,
.notice--danger h4 {
  margin-top: 0;
  margin-bottom: 0.75em;
}
.notice--info p:last-child,
.notice--danger p:last-child {
  margin-bottom: 0;
}
.notice--info a {
  color: var(--accent);
  text-underline-offset: 0.14em;
}
.notice--info a:hover {
  color: var(--accent-hover);
}
.notice--danger a {
  color: var(--notice-warn-link);
}

/* ═══════════════════════════════════════════════════════════
   POSTS LIST
   ═══════════════════════════════════════════════════════════ */
.posts-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.posts-list li {
  position: relative;
  isolation: isolate;
  padding: 1rem;
  background: var(--panel-opaque-bg);
  border: var(--panel-soft-border);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-soft-shadow);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}
.posts-list li::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--wash-accent-120);
  pointer-events: none;
  opacity: 0.7;
  transition: opacity var(--transition);
}
.posts-list li:hover {
  border-color: rgba(var(--accent-rgb), 0.28);
  box-shadow:
    var(--panel-soft-shadow),
    0 0 0 1px rgba(var(--accent-rgb), 0.08);
}
.posts-list li:hover::before {
  opacity: 1;
}

.posts-list a {
  display: inline-block;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: color var(--transition);
  margin-bottom: 0.35rem;
}
.posts-list a::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: 1;
}
.posts-list a:hover {
  color: var(--accent);
}
.posts-list li:has(a:focus-visible) {
  outline: var(--focus-outline);
  outline-offset: 2px;
  box-shadow: var(--panel-soft-shadow), var(--focus-shadow);
}
.posts-list a:focus-visible {
  outline: none;
  box-shadow: none;
}

.posts-list__meta {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}

.posts-list__excerpt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (min-width: 1024px) {
  .posts-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

  .posts-list li {
    padding: 0.85rem;
  }

  .posts-list a {
    font-size: 1rem;
    margin-bottom: 0.25rem;
  }

  .posts-list__meta {
    font-size: 0.75rem;
    margin-bottom: 0.4rem;
  }

  .posts-list__excerpt {
    font-size: 0.85rem;
    line-height: 1.45;
  }
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--chrome-bg);
  border-top: var(--chrome-border);
  box-shadow: var(--chrome-shadow-up);
  color: var(--text-secondary);
  animation: fadeIn 0.4s both 0.3s;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--wash-accent-120);
}
.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(var(--accent-rgb), 0.45) 25%,
    rgba(var(--accent-rgb), 0.32) 70%,
    transparent 100%
  );
}
.site-footer__inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2rem 1rem 2.35rem;
  display: flex;
  flex-direction: column;
  gap: 1.45em;
}
.site-footer a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.site-footer a:hover {
  color: var(--accent-secondary);
}

.site-footer__social ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em 0.6em;
}
.site-footer__social li {
  font-size: 0.88rem;
  letter-spacing: 0.03em;
}
.site-footer__social a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-weight: 600;
  padding: 0.34em 0.78em;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-panel);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition);
}
.site-footer__social a:hover {
  background: rgba(var(--accent-rgb), 0.13);
  border-color: rgba(var(--accent-rgb), 0.38);
  color: var(--accent);
  box-shadow:
    0 6px 16px rgba(var(--accent-rgb), 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.site-footer__social .icon {
  color: var(--accent);
}

.site-footer__disclaimer,
.site-footer__copy {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 780px;
}
.site-footer__disclaimer {
  padding: 0.9rem 1rem;
  border-left: 2px solid rgba(var(--accent-rgb), 0.42);
  border-radius: 0 var(--radius-panel) var(--radius-panel) 0;
  background: rgba(255, 255, 255, 0.02);
}
.site-footer__copy {
  color: var(--text-primary);
}

/* napip.ai gold link in footer */
.site-footer__social a[href*="napip.ai"]:hover {
  border-color: rgba(var(--brand-gold-rgb), 0.4) !important;
  background-color: rgba(var(--brand-gold-rgb), 0.07) !important;
}
.site-footer a[href*="napip.ai"] {
  transition:
    background-position 0.7s ease,
    filter 0.3s ease;
  background-image: var(--gradient-napip);
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 0% center;
}
.site-footer a[href*="napip.ai"]:hover {
  background-position: 100% center;
  filter: brightness(1.1);
}

/* ═══════════════════════════════════════════════════════════
   CALCULATOR COMPONENT
   ═══════════════════════════════════════════════════════════ */
.klati-calc {
  position: relative;
  background: linear-gradient(
    148deg,
    rgba(20, 20, 20, 0.86) 0%,
    rgba(9, 9, 9, 0.62) 100%
  );
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-panel);
  backdrop-filter: var(--panel-soft-blur);
  -webkit-backdrop-filter: var(--panel-soft-blur);
  box-shadow:
    0 12px 36px rgba(0, 0, 0, 0.32),
    inset 0 1px 0 var(--glass-highlight),
    0 0 0 1px rgba(var(--accent-rgb), 0.08);
  --calc-field-font: 0.88rem;
  --calc-field-pad-y: 0.38em;
  --calc-field-pad-x: 0.55em;
  --calc-field-min-h: 2.05em;
  --calc-field-gap: 0.5em;
  padding: 0.85em;
  margin: 1.5em 0;
}
.klati-calc::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: var(--wash-accent-120);
}
.klati-calc > * {
  position: relative;
  z-index: 1;
}
.klati-calc__header {
  margin-bottom: 0.75em;
}
.klati-calc__title {
  margin: 0 0 0.25em;
  font-size: 1rem;
  color: var(--accent);
  border: none;
  padding: 0;
  margin-top: 0 !important;
}
.klati-calc__desc {
  color: var(--text-secondary);
  font-size: 0.82rem;
  margin: 0;
  line-height: 1.45;
}
.klati-calc__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1em;
}
/* --calc: 640px (documented in :root) */
@media (max-width: 640px) {
  .klati-calc {
    padding: 0.65em;
  }
  .klati-calc__body {
    grid-template-columns: 1fr;
    gap: 0.75em;
  }
}
.klati-calc__inputs {
  display: flex;
  flex-direction: column;
  gap: var(--calc-field-gap);
}
.klati-calc__field label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0.2em;
  font-weight: 500;
}
.klati-calc__unit {
  color: var(--text-secondary);
  font-weight: 400;
  opacity: 0.65;
}
.klati-calc__field input[type="number"],
.klati-calc__field select {
  width: 100%;
  min-height: var(--calc-field-min-h);
  padding: var(--calc-field-pad-y) var(--calc-field-pad-x);
  background: rgba(12, 12, 12, 0.72);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-panel);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--calc-field-font);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background-color var(--transition);
  box-sizing: border-box;
}
.klati-calc__field input:focus,
.klati-calc__field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(var(--accent-rgb), 0.18);
  background: rgba(16, 16, 16, 0.78);
}

/* Toggle switch */
.klati-calc__toggle {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
  cursor: pointer;
}
.klati-calc__toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}
.klati-calc__toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  /* Pill radius — toggle is chrome, not a panel (Rule 22: compact chrome uses
     --radius-sm / --control-radius / pill). */
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.klati-calc__toggle-slider::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 16px;
  height: 16px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}
.klati-calc__toggle input:checked + .klati-calc__toggle-slider {
  background: var(--accent-dim);
  border-color: var(--accent);
}
.klati-calc__toggle input:checked + .klati-calc__toggle-slider::before {
  transform: translateX(18px);
  background: var(--accent);
}

/* Results */
.klati-calc__results {
  display: flex;
  flex-direction: column;
  gap: var(--calc-field-gap);
  min-height: 3em;
}
.klati-calc__results:empty::after {
  content: "Results appear here";
  display: block;
  padding: 1em;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-style: italic;
  text-align: center;
  background: var(--surface-dark);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-panel);
}
.klati-calc__result {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6em;
  min-height: var(--calc-field-min-h);
  padding: var(--calc-field-pad-y) var(--calc-field-pad-x);
  background: rgba(12, 12, 12, 0.66);
  border-radius: var(--radius-panel);
  border: 1px solid var(--border-subtle);
}
.klati-calc__result--accent {
  border-color: var(--accent);
  background: linear-gradient(
    110deg,
    rgba(var(--accent-rgb), 0.4) 0%,
    rgba(var(--accent-rgb), 0.16) 100%
  );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 1px rgba(var(--accent-rgb), 0.16);
  padding: var(--calc-field-pad-y) var(--calc-field-pad-x);
}
.klati-calc__result--accent .klati-calc__result-label {
  color: var(--text-primary);
  font-weight: 600;
}
.klati-calc__result--accent .klati-calc__result-value {
  font-size: var(--calc-field-font);
  font-weight: 700;
  color: var(--accent);
}
.klati-calc__result--ok {
  background: var(--surface-dark);
  border-color: var(--border-subtle);
}
.klati-calc__result--ok .klati-calc__result-value {
  color: var(--status-ok);
}
.klati-calc__result--warn {
  background: var(--surface-dark);
  border-color: var(--border-subtle);
}
.klati-calc__result--warn .klati-calc__result-value {
  color: var(--status-warn);
}
.klati-calc__result-label {
  color: var(--text-secondary);
  font-size: 0.78rem;
  flex-shrink: 0;
}
.klati-calc__result-value {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--calc-field-font);
  text-align: right;
  word-break: break-word;
}
.klati-calc__result--breakdown {
  min-height: 0;
  flex-direction: column;
  gap: 0.35em;
}
.klati-calc__result--note {
  min-height: 0;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15em;
}
.klati-calc__result--note .klati-calc__result-value {
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.45;
  text-align: left;
}
.klati-calc__breakdown-list {
  margin: 0;
  padding: 0 0 0 1.2em;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  list-style: revert;
}
.klati-calc__notes {
  margin-top: 0.75em;
  padding-top: 0.6em;
  border-top: 1px solid var(--border);
}
.klati-calc__notes p {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin: 0.25em 0;
  line-height: 1.45;
}

/* Attention CTA link — glass stack as soft panels + accent sweep (anchors, tools, not only calculators) */
.attention-link {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.55em 0.9em;
  margin: 1em 0;
  border: 1px solid rgba(var(--accent-rgb), 0.24);
  border-radius: var(--radius-panel);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.88rem;
  background:
    linear-gradient(
      118deg,
      rgba(var(--accent-rgb), 0.14) 0%,
      rgba(var(--accent-rgb), 0.05) 38%,
      transparent 62%
    ),
    var(--panel-soft-bg);
  backdrop-filter: var(--panel-soft-blur);
  -webkit-backdrop-filter: var(--panel-soft-blur);
  box-shadow: var(--panel-soft-shadow);
  transition:
    box-shadow var(--transition),
    border-color var(--transition),
    background var(--transition),
    color var(--transition);
}
.attention-link::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    110deg,
    rgba(255, 255, 255, 0.06) 0%,
    rgba(255, 255, 255, 0) 48%
  );
  opacity: 0.85;
  pointer-events: none;
}
.attention-link:hover {
  border-color: rgba(var(--accent-rgb), 0.38);
  box-shadow:
    var(--panel-soft-shadow),
    0 10px 28px rgba(var(--accent-rgb), 0.12);
  color: var(--text-primary);
}
.attention-link:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-radius: var(--radius-panel);
  box-shadow: var(--focus-shadow);
}
.attention-link__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2em;
  line-height: 1;
}
.attention-link__icon .attention-link__svg {
  display: block;
  width: 1.35em;
  height: 1.35em;
  flex-shrink: 0;
}
.attention-link__icon--missing {
  width: 1.35em;
  height: 1.35em;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
}
.attention-link__arrow {
  margin-left: auto;
  font-size: 1em;
  color: rgba(var(--accent-rgb), 0.55);
  transition:
    color var(--transition),
    opacity var(--transition);
  opacity: 0.85;
}
.attention-link:hover .attention-link__arrow {
  color: var(--accent);
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════
   SUPPLEMENTARY TABLE STYLES
   ═══════════════════════════════════════════════════════════ */
.article__body th,
.article__body td {
  min-width: 7.5ch;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: normal;
  hyphens: manual;
}
.article__body th:first-child,
.article__body td:first-child {
  width: clamp(8rem, 24%, 13.5rem);
}
.article__body th:not(:first-child),
.article__body td:not(:first-child) {
  min-width: 10ch;
}
.article__body table.table--first-col-narrow th:first-child,
.article__body table.table--first-col-narrow td:first-child {
  width: clamp(6.8rem, 18%, 10.5rem);
}
.article__body table.table--first-col-wide th:first-child,
.article__body table.table--first-col-wide td:first-child {
  width: clamp(10.2rem, 32%, 18rem);
}
.article__body td a,
.article__body th a {
  color: color-mix(in srgb, var(--text-secondary) 92%, var(--accent) 8%);
  overflow-wrap: anywhere;
  text-underline-offset: 0.12em;
  text-decoration-thickness: 0.08em;
}
.article__body td a:hover,
.article__body th a:hover {
  color: var(--text-primary);
}
.article__body td a:focus-visible,
.article__body th a:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
  box-shadow: var(--focus-shadow);
}
@media (max-width: 600px) {
  .article__body th,
  .article__body td {
    padding: 0.55em 0.65em;
    min-width: 9ch;
  }
  .article__body th:first-child,
  .article__body td:first-child {
    width: auto;
    min-width: 7.8rem;
  }
  .article__body table.table--first-col-narrow th:first-child,
  .article__body table.table--first-col-narrow td:first-child {
    min-width: 6.6rem;
  }
  .article__body table.table--first-col-wide th:first-child,
  .article__body table.table--first-col-wide td:first-child {
    min-width: 9.8rem;
  }
}

/* ── Research list ── */
.research-list ul {
  padding-left: 1em;
  list-style: revert;
}
@media (max-width: 600px) {
  .research-list {
    font-size: 0.75rem;
    line-height: 1.4;
  }
  .research-list ul {
    padding-left: 0.75em;
  }
  .research-list li {
    margin-bottom: 0.4em;
  }
}

/* ── Research filters — sidebar panel (matches TOC chrome) ── */
.research-filters__body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0.65rem 0.75rem 0.75rem;
  overflow-y: auto;
}
.research-filters.is-collapsed .research-filters__body {
  display: none;
}
.research-filters__field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.research-filters select,
.research-filters input {
  min-height: 1.8rem;
  padding: 0.28rem 0.42rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font: inherit;
  font-size: 1rem; /* ≥16px prevents iOS Safari auto-zoom on focus */
  text-transform: none;
  letter-spacing: normal;
}
.research-filters select:focus,
.research-filters input:focus {
  outline: var(--focus-outline);
  box-shadow: var(--focus-shadow);
}
.research-filters__status {
  margin: 0.1rem 0 0;
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.btn--primary {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: rgba(var(--accent-rgb), 0.16);
  /* Sits on a 16% accent wash over --bg-primary — use theme-aware primary text
     so the button is readable in both dark (near-white) and light (near-black). */
  color: var(--text-primary);
  border: 1px solid rgba(var(--accent-rgb), 0.36);
  border-radius: var(--radius-panel);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.5em 1em;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition),
    background var(--transition);
}
.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    110deg,
    rgba(255, 255, 255, 0.07) 0%,
    rgba(255, 255, 255, 0) 42%
  );
  opacity: 0.45;
}
.btn--primary:hover {
  background: rgba(var(--accent-rgb), 0.22);
  border-color: rgba(var(--accent-rgb), 0.48);
  box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.1);
  transform: none;
}
.btn--primary:active {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.home-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45em;
  margin: 0.5rem 0 1.5rem;
  padding: 0.9rem 1.25rem;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-on-accent);
  background: rgba(var(--accent-rgb), 0.32);
  border: 1px solid rgba(var(--accent-rgb), 0.55);
  box-shadow:
    0 10px 26px rgba(var(--accent-rgb), 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.home-cta:hover {
  color: var(--text-on-accent);
  background: rgba(var(--accent-rgb), 0.4);
  border-color: rgba(var(--accent-rgb), 0.68);
  box-shadow:
    0 12px 28px rgba(var(--accent-rgb), 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

/* ═══════════════════════════════════════════════════════════
   PAGINATION
   ═══════════════════════════════════════════════════════════ */
.pagination--pager {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: rgba(var(--accent-rgb), 0.09);
  border: 1px solid rgba(var(--accent-rgb), 0.24);
  color: var(--text-secondary);
  border-radius: var(--radius-panel);
  padding: 0.4em 0.8em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition);
}
.pagination--pager::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    112deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0) 48%
  );
}
.pagination--pager:hover {
  background: rgba(var(--accent-rgb), 0.13);
  border-color: rgba(var(--accent-rgb), 0.34);
  color: var(--accent);
  box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.08);
  transform: none;
}

/* ── Light theme component overrides ──
   Elements with hardcoded dark rgba values that tokens cannot reach. */
@media (max-width: 1319px) {
  [data-theme="light"] .site-nav::before {
    display: none;
  }
  [data-theme="light"] .site-nav {
    background:
      linear-gradient(
        55deg,
        rgba(var(--accent-rgb), 0.12) 0%,
        rgba(var(--accent-rgb), 0.04) 22%,
        transparent 45%
      ),
      var(--drawer-base);
    /* Shadow overridden: light theme replaces dark --chrome-shadow with a
       softer drop (the token-level override lives in :root[data-theme=light]
       already — re-declare here because the drawer's box-shadow was inlined). */
    box-shadow: var(--chrome-shadow);
  }
}
[data-theme="light"] .site-search__results {
  background:
    linear-gradient(148deg, rgba(var(--accent-rgb), 0.14) 0%, rgba(242, 242, 242, 0.95) 35%, rgba(252, 252, 252, 0.92) 100%),
    rgba(255, 255, 255, 0.90);
}
[data-theme="light"] .klati-calc__field input[type="number"],
[data-theme="light"] .klati-calc__field select {
  background: rgba(255, 255, 255, 0.85);
}
[data-theme="light"] .klati-calc__field input:focus,
[data-theme="light"] .klati-calc__field select:focus {
  background: rgba(255, 255, 255, 0.98);
}
[data-theme="light"] .klati-calc__result {
  background: rgba(235, 235, 235, 0.80);
}
[data-theme="light"] .article__body table::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .toc {
  background: var(--panel-opaque-bg);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 0 0 1px rgba(var(--accent-rgb), 0.06);
}
[data-theme="light"] .article-summary__title {
  background: linear-gradient(
    155deg,
    rgba(var(--accent-rgb), 0.20) 0%,
    rgba(var(--accent-rgb), 0.05) 35%,
    color-mix(in srgb, var(--bg-secondary) 94%, transparent) 55%,
    rgba(242, 242, 242, 0.92) 100%
  );
}
[data-theme="light"] .article__body thead {
  background: linear-gradient(
    155deg,
    rgba(var(--accent-rgb), 0.20) 0%,
    rgba(var(--accent-rgb), 0.05) 35%,
    color-mix(in srgb, var(--bg-secondary) 94%, transparent) 55%,
    rgba(242, 242, 242, 0.92) 100%
  );
}
[data-theme="light"] .article__body td {
  border-bottom-color: rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .table-scroll__sticky-head {
  /* --sticky-thead-bg already points to --bg-primary in light theme; re-stating
     here keeps the selector colocated with its shadow override (shadow tints
     differ between dark and light so cannot be promoted to a token). */
  box-shadow: 0 8px 14px rgba(0, 0, 0, 0.10);
}
[data-theme="light"] .klati-calc {
  background: linear-gradient(
    148deg,
    rgba(235, 235, 235, 0.95) 0%,
    rgba(248, 248, 248, 0.90) 100%
  );
  box-shadow:
    0 12px 36px rgba(0, 0, 0, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 0 0 1px rgba(var(--accent-rgb), 0.06);
}
[data-theme="light"] .site-nav__dropdown {
  /* --panel-dropdown-bg is already the light-theme variant (see :root light override) */
  background: var(--panel-dropdown-bg);
}
[data-theme="light"] .notice--danger {
  background:
    linear-gradient(
      140deg,
      rgba(var(--danger-rgb), 0.10) 0%,
      rgba(var(--danger-rgb), 0.05) 100%
    ),
    var(--panel-soft-bg);
}
@media (max-width: 600px) {
  [data-theme="light"] .article__body thead {
    background: rgba(235, 235, 235, 0.95);
  }
  [data-theme="light"] .article__body th:not(:first-child),
  [data-theme="light"] .article__body td:not(:first-child) {
    background-color: rgba(248, 248, 248, 0.95);
    background-image: none;
  }
  [data-theme="light"] .article__body tbody tr:hover {
    background: rgba(0, 0, 0, 0.04);
  }
  [data-theme="light"] .article__body th:first-child,
  [data-theme="light"] .article__body td:first-child {
    /* Use the light-theme --sticky-col-rail-rgb (245,245,245) — matches page bg
       so the rail blends with the article instead of being a darker tile. */
    background: linear-gradient(
      90deg,
      color-mix(in srgb, rgb(var(--accent-rgb)) 12%, rgb(var(--sticky-col-rail-rgb))) 0%,
      color-mix(in srgb, rgb(var(--accent-rgb)) 6%, rgb(var(--sticky-col-rail-rgb))) 47%,
      rgba(var(--sticky-col-rail-rgb), 0.97) 69%,
      rgba(var(--sticky-col-rail-rgb), 0.97) 100%
    );
  }
}