/* ==========================================================================
   AdaptOrch — Paper Academic Design System
   Source of truth: adaptorch.svg (ISAIA 2026 paper cover)
   Palette: cream paper + soft ink + vermillion signal (ONE accent, used sparingly)
   ========================================================================== */

:root {
  /* --- CORE BRAND (paper / ink / vermillion) --- */
  --paper: #ede6d6;
  --paper-2: #f3ece0;
  --paper-deep: #e4dcc6;
  --paper-strong: #f7f1e6;
  --ink: #141414;
  --ink-soft: #2a2a2a;
  --ink-mid: #4d4d4d;
  --ink-muted: #6d6a62;
  --ink-faint: rgba(20, 20, 20, 0.08);
  --ink-line: rgba(20, 20, 20, 0.14);
  --ink-line-strong: rgba(20, 20, 20, 0.25);
  --ink-line-soft: rgba(20, 20, 20, 0.06);
  --vermillion: #b8261f;
  --vermillion-2: #9d201a;
  --vermillion-soft: rgba(184, 38, 31, 0.12);
  --vermillion-glow: rgba(184, 38, 31, 0.28);

  /* --- SEMANTIC (map to paper) --- */
  --bg: var(--paper);
  --bg-2: var(--paper-2);
  --surface: var(--paper-strong);
  --surface-2: #fbf6eb;
  --ink-on-paper: var(--ink);
  --ink-on-paper-soft: var(--ink-soft);
  --ink-on-paper-mid: var(--ink-mid);
  --ink-on-paper-muted: var(--ink-muted);

  --accent: var(--vermillion);
  --accent-2: var(--vermillion-2);
  --accent-soft: var(--vermillion-soft);
  --accent-ring: var(--vermillion-glow);

  --line: var(--ink-line);
  --line-strong: var(--ink-line-strong);
  --line-soft: var(--ink-line-soft);

  /* --- CTA (dark block on paper) --- */
  --cta-bg: var(--ink);
  --cta-fg: var(--paper);
  --cta-bg-hover: var(--ink-soft);

  /* --- BRAND-FILM SPECIFIC (stays dark regardless of theme) --- */
  --film-bg: #0d0d0d;

  /* --- TYPOGRAPHY --- */
  --font-display:
    "Newsreader", "Georgia", "Times New Roman", serif;
  --font-body:
    "IBM Plex Sans", "Verdana", sans-serif;
  --font-serif:
    "Newsreader", "Iowan Old Style", "Georgia", "Times New Roman", serif;
  --font-mono:
    "JetBrains Mono", "IBM Plex Mono", "Courier New", monospace;

  /* --- SCALE (fluid, academic restraint) --- */
  --text-xs: clamp(0.68rem, 0.66rem + 0.1vw, 0.72rem);
  --text-sm: clamp(0.78rem, 0.76rem + 0.12vw, 0.84rem);
  --text-base: clamp(0.95rem, 0.93rem + 0.18vw, 1.06rem);
  --text-lg: clamp(1.1rem, 1.05rem + 0.3vw, 1.28rem);
  --text-xl: clamp(1.35rem, 1.25rem + 0.5vw, 1.65rem);
  --text-2xl: clamp(1.7rem, 1.5rem + 1vw, 2.25rem);
  --text-3xl: clamp(2.1rem, 1.8rem + 1.8vw, 3.2rem);
  --text-4xl: clamp(2.6rem, 2.1rem + 2.6vw, 4.2rem);
  --text-display: clamp(3.6rem, 3rem + 4vw, 6.4rem);

  /* --- SPACE --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --space-8: 3.5rem;
  --space-9: 4.5rem;
  --space-10: 6rem;

  /* --- LAYOUT --- */
  --container: 1200px;
  --container-wide: 1320px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-pad: clamp(5rem, 8vw, 7rem);

  /* --- RADII (very small, paper-like) --- */
  --radius-xs: 2px;
  --radius-sm: 3px;
  --radius: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-pill: 999px;

  /* --- MOTION --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 160ms;
  --t-base: 260ms;
  --t-slow: 420ms;

  /* --- SHADOWS (minimal, mostly hairline borders) --- */
  --shadow-xs: 0 1px 0 rgba(20, 20, 20, 0.03);
  --shadow-sm: 0 2px 8px rgba(20, 20, 20, 0.04);
  --shadow-md: 0 8px 24px rgba(20, 20, 20, 0.06);
  --shadow-lg: 0 24px 64px rgba(20, 20, 20, 0.08);

  /* --- GRID OVERLAY --- */
  --grid-color: rgba(20, 20, 20, 0.045);
  --grid-size: 40px;
  --header-h: clamp(150px, 12vw, 176px);
  --header-bg: rgba(237, 230, 214, 0.96);
  --header-bg-tail: rgba(237, 230, 214, 0.78);
}

/* Dark theme removed — site is light-only (no dark mode). */

/* ==========================================================================
   RESET
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h, 112px) + 24px);
}
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink-on-paper);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-y: auto;
  position: relative;
  font-feature-settings: "ss01", "cv11", "kern";
  font-variant-numeric: tabular-nums;
  transition: background-color var(--t-base) var(--ease-soft), color var(--t-base) var(--ease-soft);
}
img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}
ul,
ol {
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* ==========================================================================
   PAPER LAYERS (grid + crop marks)
   ========================================================================== */
.paper-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000 30%, transparent 100%);
}

.crop-marks {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.crop {
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--ink-on-paper-soft);
  opacity: 0.55;
}
.crop--tl {
  top: 16px;
  left: 16px;
  border-top: 1px solid;
  border-left: 1px solid;
}
.crop--tr {
  top: 16px;
  right: 16px;
  border-top: 1px solid;
  border-right: 1px solid;
}
.crop--bl {
  bottom: 16px;
  left: 16px;
  border-bottom: 1px solid;
  border-left: 1px solid;
}
.crop--br {
  bottom: 16px;
  right: 16px;
  border-bottom: 1px solid;
  border-right: 1px solid;
}

/* ==========================================================================
   TAU COMPLEXITY RAIL (right margin, scroll-linked)
   ========================================================================== */
.tau-rail {
  position: fixed;
  top: 50%;
  right: clamp(14px, 1.5vw, 28px);
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  pointer-events: none;
}
.tau-rail-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  margin-bottom: var(--space-3);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.tau-rail-scale {
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 1.6vh, 22px);
  list-style: none;
}
.tau-rail-scale li {
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--ink-on-paper-muted);
  padding-right: 16px;
  position: relative;
  transition: color var(--t-fast) var(--ease-soft);
}
.tau-rail-scale li::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 1px;
  background: var(--ink-on-paper-muted);
  opacity: 0.55;
  transition: background var(--t-fast), width var(--t-fast);
}
.tau-rail-scale li.is-active {
  color: var(--vermillion);
}
.tau-rail-scale li.is-active::after {
  background: var(--vermillion);
  width: 14px;
  opacity: 1;
}
.tau-rail-track {
  width: 1px;
  height: 120px;
  background: var(--ink-line);
  position: relative;
  margin-top: var(--space-3);
  margin-right: 4px;
}
.tau-rail-indicator {
  position: absolute;
  left: -3px;
  width: 7px;
  height: 7px;
  background: var(--vermillion);
  border-radius: 50%;
  top: 0;
  transition: top 180ms var(--ease-soft);
  box-shadow: 0 0 0 3px var(--vermillion-soft);
}
@media (max-width: 960px) {
  .tau-rail {
    display: none;
  }
}

/* ==========================================================================
   PAGE WRAP + SECTION FRAME
   ========================================================================== */
.page-wrap {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  isolation: isolate;
}

/* ==========================================================================
   NAV HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding-top: clamp(2.25rem, 3.65vw, 3.25rem);
  padding-bottom: clamp(0.85rem, 1.25vw, 1.15rem);
  background: linear-gradient(to bottom, var(--header-bg) 72%, var(--header-bg-tail) 100%);
  transition:
    background var(--t-base),
    opacity 240ms var(--ease-soft),
    padding var(--t-base),
    transform 340ms var(--ease-out);
  will-change: transform, opacity;
}
body.is-scrolled .site-header {
  padding-top: clamp(0.65rem, 1.2vw, 1rem);
  padding-bottom: var(--space-2);
}
body.is-footer-visible .site-header {
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(-100% - 1rem));
}

body.is-film-visible .site-header {
  --header-bg: rgba(13, 13, 13, 0.88);
  --header-bg-tail: rgba(13, 13, 13, 0.52);
  --cta-bg: var(--paper);
  --cta-fg: var(--ink);
  --cta-bg-hover: var(--paper-strong);
}
body.is-film-visible .nav-inner {
  border-color: rgba(237, 230, 214, 0.72);
  background: linear-gradient(90deg, transparent, rgba(13, 13, 13, 0.9) 12%, rgba(13, 13, 13, 0.9) 88%, transparent);
}
body.is-film-visible .nav-meta,
body.is-film-visible .nav-links a,
body.is-film-visible .nav-login,
body.is-film-visible .nav-brand {
  color: rgba(237, 230, 214, 0.78);
}
body.is-film-visible .nav-wordmark,
body.is-film-visible .nav-links a:hover,
body.is-film-visible .nav-links a.is-active {
  color: var(--paper);
}
body.is-film-visible .nav-meta-sep {
  background: rgba(237, 230, 214, 0.24);
}
body.is-film-visible .lang-switch {
  border-color: rgba(237, 230, 214, 0.28);
}
body.is-film-visible .lang-opt {
  color: rgba(237, 230, 214, 0.7);
}
body.is-film-visible .lang-opt.is-active {
  color: var(--paper);
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  margin-bottom: clamp(1.05rem, 1.45vw, 1.35rem);
}
.nav-meta-sep {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.nav-meta-section {
  color: var(--vermillion);
  transition: color var(--t-fast);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: clamp(0.95rem, 1.25vw, 1.2rem) 0 clamp(1.05rem, 1.4vw, 1.35rem);
  border-top: 1px solid var(--ink-on-paper);
  border-bottom: 1px solid var(--ink-on-paper);
  background: linear-gradient(90deg, transparent, var(--header-bg) 12%, var(--header-bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  min-height: 72px;
}
body.is-scrolled .nav-inner {
  min-height: 58px;
  padding-block: var(--space-3);
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--ink-on-paper);
  flex-shrink: 0;
}
.nav-logo {
  width: clamp(34px, 2.8vw, 40px);
  height: clamp(34px, 2.8vw, 40px);
  color: var(--ink-on-paper);
}
.nav-wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.55rem, 2vw, 1.85rem);
  letter-spacing: -0.045em;
  color: var(--ink-on-paper);
  line-height: 1;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 1.45vw, 1.45rem);
  margin-left: auto;
  min-width: 0;
  white-space: nowrap;
}
.nav-links a {
  display: inline-flex;
  align-items: baseline;
  gap: clamp(0.25rem, 0.6vw, var(--space-2));
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper-mid);
  padding: var(--space-2) var(--space-1);
  position: relative;
  transition: color var(--t-fast);
}
.nav-links a:hover,
.nav-links a.is-active {
  color: var(--ink-on-paper);
}
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--vermillion);
}
.nav-links .link-num {
  font-size: 8.5px;
  opacity: 0.5;
  letter-spacing: 0.12em;
}
.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
/* ── Language switcher (EN / 中文) ── */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 5px 9px;
}
.lang-opt {
  color: var(--ink-on-paper-muted);
  text-decoration: none;
  line-height: 1;
  transition: color var(--t-fast);
}
.lang-opt:hover {
  color: var(--vermillion);
}
.lang-opt.is-active {
  color: var(--ink-on-paper);
  font-weight: 600;
}
.lang-sep {
  color: var(--line-strong);
}
.lang-switch:focus-within {
  border-color: var(--vermillion);
}
.lang-opt:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}

.nav-login {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper-mid);
  padding: var(--space-2) var(--space-3);
  transition: color var(--t-fast);
}
.nav-login:hover {
  color: var(--ink-on-paper);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cta-fg);
  background: var(--cta-bg);
  min-height: 42px;
  padding: var(--space-3) clamp(1.35rem, 2vw, 1.75rem);
  border-radius: var(--radius);
  transition: background var(--t-fast), transform var(--t-fast);
  position: relative;
}
.nav-cta:hover {
  background: var(--cta-bg-hover);
  transform: translateY(-1px);
}
.nav-cta:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}
.cta-arrow {
  display: inline-block;
  transition: transform var(--t-fast) var(--ease-out);
}
.nav-cta:hover .cta-arrow {
  transform: translateX(3px);
}


@media (max-width: 1120px) {
  .nav-links .link-num {
    display: none;
  }
  .nav-links a {
    font-size: 9px;
    letter-spacing: 0.16em;
  }
  .nav-actions {
    gap: var(--space-2);
  }
  .nav-login {
    display: none;
  }
}

@media (max-width: 820px) {
  .nav-links {
    display: none;
  }
  .nav-meta {
    font-size: 8px;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
  }
}

/* ==========================================================================
   FIG SECTION FRAME (shared across sections)
   ========================================================================== */
.fig {
  padding: var(--section-pad) 0;
  position: relative;
  border-bottom: 1px solid var(--line-soft);
}
.fig:last-of-type {
  border-bottom: 0;
}
.fig-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--ink-on-paper);
  margin-bottom: var(--space-8);
}
.fig-meta-left {
  color: var(--ink-on-paper);
}
.fig-meta-right {
  text-align: right;
}
.fig-head {
  max-width: 68ch;
  margin-bottom: var(--space-9);
}
.fig-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--text-4xl);
  line-height: 1.02;
  letter-spacing: -0.045em;
  color: var(--ink-on-paper);
  text-wrap: balance;
  margin-bottom: var(--space-5);
}
.fig-title strong {
  font-weight: 500;
  font-style: italic;
  font-family: var(--font-serif);
}
.fig-lede {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--ink-on-paper-soft);
  max-width: 56ch;
  text-wrap: pretty;
  font-weight: 300;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.fig-hero {
  min-height: calc(100svh - var(--header-h));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(3.25rem, 5vw, 4.5rem);
  padding-bottom: clamp(4.25rem, 7vw, 6rem);
}
.hero-wrap {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
@media (max-width: 960px) {
  .hero-wrap {
    grid-template-columns: 1fr;
  }
}
.hero-main {
  max-width: 640px;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--ink-on-paper);
  border-radius: 0;
  margin-bottom: var(--space-6);
}
.hero-kicker .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--vermillion);
  box-shadow: 0 0 0 3px var(--vermillion-soft);
  animation: pulse 2.4s ease-in-out infinite;
}
.hero-kicker .sep {
  opacity: 0.45;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.25); opacity: 0.65; }
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--text-display);
  line-height: 0.9;
  letter-spacing: -0.055em;
  color: var(--ink-on-paper);
  margin-bottom: var(--space-4);
  font-variation-settings: "opsz" 72;
}
.hero-title span {
  display: inline-block;
}
.hero-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: var(--text-xl);
  line-height: 1.35;
  color: var(--ink-on-paper-soft);
  margin-bottom: var(--space-5);
}
.hero-lede {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--ink-on-paper-mid);
  margin-bottom: var(--space-7);
  max-width: 52ch;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink-on-paper);
  border-bottom: 1px solid var(--ink-on-paper);
  padding: var(--space-5) 0;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 var(--space-4);
  border-right: 1px solid var(--line);
  position: relative;
}
.stat:last-child {
  border-right: 0;
}
.stat:first-child {
  padding-left: 0;
}
.stat-kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ink-on-paper-muted);
  margin-bottom: var(--space-1);
}
.stat-val {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.75rem, 2.5vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink-on-paper);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ink-on-paper-mid);
}
@media (max-width: 640px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat {
    padding: var(--space-3) var(--space-2);
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .stat:nth-child(2n) { border-right: 0; }
  .stat:nth-last-child(-n+2) { border-bottom: 0; }
}

/* Hero diagram */
.hero-diagram {
  position: relative;
  margin: 0;
  isolation: isolate;
}
.hero-diagram::before {
  content: "";
  position: absolute;
  inset: -14px 18px 18px -14px;
  border: 1px solid var(--vermillion);
  opacity: 0.32;
  z-index: -1;
}
.hero-diagram img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--paper);
  border: 1px solid var(--ink-on-paper);
  border-radius: var(--radius-sm);
  filter: contrast(1.02);
}
.hero-diagram figcaption {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  padding-top: var(--space-3);
  text-align: center;
  text-wrap: balance;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast),
    transform var(--t-fast);
  cursor: pointer;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--cta-bg);
  color: var(--cta-fg);
  border-color: var(--cta-bg);
}
.btn-primary:hover {
  background: var(--cta-bg-hover);
  border-color: var(--cta-bg-hover);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink-on-paper);
  border-color: var(--ink-on-paper);
}
.btn-ghost:hover {
  background: var(--accent-soft);
  color: var(--vermillion);
  border-color: var(--vermillion);
}
.btn-ghost .btn-path {
  color: var(--ink-on-paper-muted);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: none;
}
.btn-arrow {
  transition: transform var(--t-fast) var(--ease-out);
  font-weight: 400;
}
.btn:hover .btn-arrow {
  transform: translateX(3px);
}
.btn-block {
  width: 100%;
  justify-content: center;
}
.btn-sm {
  padding: var(--space-3) var(--space-4);
  font-size: 10px;
}

/* ==========================================================================
   BRAND FILM (smooth sticky video, scroll-reactive depth)
   ========================================================================== */
.brand-film {
  position: relative;
  height: 240vh;
  width: 100%;
  margin-inline: calc(var(--gutter) * -1);
  margin-block: 0;
  isolation: isolate;
  z-index: 2;
  background: var(--film-bg);
}
.brand-film-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  background: var(--film-bg);
  isolation: isolate;
}
.brand-film-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--film-bg);
  will-change: transform, opacity;
  opacity: 0.94;
  filter: sepia(0.12) saturate(0.9) contrast(1.05);
  transform: scale(var(--film-scale, 1.05));
  transition: opacity var(--t-slow) var(--ease-soft), transform 520ms var(--ease-out);
  z-index: 0;
}
.brand-film-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background:
    linear-gradient(180deg, var(--film-bg) 0%, rgba(13, 13, 13, 0) 15%, rgba(13, 13, 13, 0) 85%, var(--film-bg) 100%),
    radial-gradient(ellipse 75% 55% at 50% 50%, transparent 0%, rgba(13, 13, 13, 0.32) 70%, rgba(13, 13, 13, 0.78) 100%);
}
.brand-film-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.5rem, 3.5vw, 2.75rem) clamp(2rem, 5vw, 3.5rem);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(237, 230, 214, 0.62);
}
.film-meta-top::before {
  content: "◎ ";
  color: var(--vermillion);
}
.film-meta-btm {
  text-align: right;
}
.brand-film-progress {
  position: absolute;
  bottom: clamp(1rem, 2.5vw, 1.75rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  pointer-events: none;
  z-index: 3;
}
.brand-film-progress-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(237, 230, 214, 0.5);
}
.brand-film-progress-track {
  width: 200px;
  height: 1px;
  background: rgba(237, 230, 214, 0.18);
  overflow: hidden;
}
.brand-film-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--vermillion);
  transition: width 120ms linear;
}
.brand-film::before,
.brand-film::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 8vh;
  pointer-events: none;
  z-index: 0;
}
.brand-film::before {
  top: 0;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(13, 13, 13, 0) 100%);
}
.brand-film::after {
  bottom: 0;
  background: linear-gradient(0deg, var(--bg) 0%, rgba(13, 13, 13, 0) 100%);
}
@media (max-width: 720px) {
  .brand-film {
    height: 180vh;
  }
  .brand-film-progress-track {
    width: 140px;
  }
  .brand-film-overlay {
    font-size: 8.5px;
  }
  .nav-links,
  .nav-login {
    display: none;
  }
  .nav-inner {
    padding-block: var(--space-3);
  }
  .nav-wordmark {
    font-size: clamp(1.2rem, 5vw, 1.4rem);
  }
  .nav-cta {
    padding: 0.7rem 1rem;
    font-size: 9px;
  }
  .nav-meta {
    font-size: 8px;
    padding-block: var(--space-2);
    gap: var(--space-2);
    justify-content: space-between;
  }
  .nav-meta-sep {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .brand-film {
    height: auto;
  }
  .brand-film-stage {
    position: relative;
    height: auto;
    padding: var(--space-9) var(--gutter);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }
  .brand-film-video {
    display: none;
  }
  .brand-film-progress {
    display: none;
  }
}

/* ==========================================================================
   CITATION STRIP (trust band)
   ========================================================================== */
.citation-strip {
  padding: var(--space-7) 0 var(--space-6);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.citation-strip ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}
.citation-strip li {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 var(--space-3);
  border-right: 1px solid var(--line);
}
.citation-strip li:last-child {
  border-right: 0;
}
.citation-strip li:first-child {
  padding-left: 0;
}
.cite-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
}
.cite-val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-on-paper);
  letter-spacing: 0.02em;
}
@media (max-width: 720px) {
  .citation-strip ul {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
  .citation-strip li {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: var(--space-2) 0;
  }
}

/* ==========================================================================
   HEADS GRID (6 agent nodes)
   ========================================================================== */
.heads-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink-on-paper);
  border-left: 1px solid var(--ink-on-paper);
}
.head {
  padding: var(--space-7) var(--space-6);
  border-right: 1px solid var(--ink-on-paper);
  border-bottom: 1px solid var(--ink-on-paper);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--surface);
  transition: background var(--t-base), transform var(--t-base);
  position: relative;
}
.head:hover {
  background: var(--surface-2);
}
.head:hover .head-shape img {
  transform: scale(1.04);
}
.head-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  padding-bottom: var(--space-3);
  border-bottom: 1px dashed var(--line-strong);
}
.head-num {
  color: var(--ink-on-paper);
}
.head-tau {
  color: var(--vermillion);
}
.head-shape {
  width: 100%;
  aspect-ratio: 1;
  max-width: 200px;
  margin: var(--space-3) auto;
  background: var(--paper);
  border: 1px solid var(--ink-on-paper);
  border-radius: var(--radius-sm);
  overflow: hidden;
  padding: var(--space-3);
}
.head-shape img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--t-base) var(--ease-out);
  mix-blend-mode: multiply;
}
.head-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-on-paper);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.head-alpha {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--vermillion);
  letter-spacing: 0.05em;
}
.head-desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--ink-on-paper-mid);
}
@media (max-width: 960px) {
  .heads-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .heads-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   PRICING MATRIX (table-like)
   ========================================================================== */
.billing-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin: 0 0 var(--space-6);
  padding: 3px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
}
.billing-toggle-btn {
  border: 0;
  background: transparent;
  color: var(--ink-on-paper-mid);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.billing-toggle-btn small {
  display: inline-block;
  margin-left: var(--space-2);
  color: var(--vermillion);
  letter-spacing: 0.08em;
}
.billing-toggle-btn.is-active {
  background: var(--ink-on-paper);
  color: var(--paper);
}
.matrix-row.recommended > * {
  box-shadow: inset 3px 0 0 var(--vermillion);
  background: color-mix(in srgb, var(--vermillion) 7%, var(--paper));
}
.pricing-matrix {
  display: grid;
  grid-template-columns: 1.05fr 1.25fr 0.85fr 1.75fr 1fr;
  border: 1px solid var(--ink-on-paper);
}
.matrix-head,
.matrix-row {
  display: contents;
}
.matrix-head > * {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border-bottom: 1px solid var(--ink-on-paper);
  color: var(--ink-on-paper);
}
.matrix-row > * {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--line);
  font-size: var(--text-sm);
  color: var(--ink-on-paper);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.matrix-row:last-of-type > * {
  border-bottom: 0;
}
.matrix-plan {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--ink-on-paper);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.matrix-plan strong {
  font: inherit;
  text-transform: uppercase;
}
.plan-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 22px;
  padding: 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.15em;
  background: var(--paper-deep);
  color: var(--ink-on-paper);
  border-radius: var(--radius-xs);
}
.plan-dot--active {
  background: var(--vermillion);
  color: #fff;
}
.matrix-range {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  color: var(--ink-on-paper-soft);
}
.matrix-price strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  color: var(--ink-on-paper);
}
.matrix-price span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--ink-on-paper-muted);
}
.matrix-agents {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  font-family: var(--font-body);
  color: var(--ink-on-paper-mid);
  font-size: var(--text-sm);
  line-height: 1.35;
}
.matrix-feature {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
}
.matrix-feature::before {
  content: "•";
  color: var(--vermillion);
  font-family: var(--font-mono);
  font-size: 0.8em;
}
.matrix-row--featured {
  position: relative;
}
.matrix-row--featured > * {
  background: var(--accent-soft);
}
.plan-badge {
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--vermillion);
  margin-left: var(--space-2);
  padding: 2px var(--space-2);
  border: 1px solid var(--vermillion);
  border-radius: 2px;
}
.matrix-price strong,
.matrix-price span {
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.matrix-price.is-updating strong,
.matrix-price.is-updating span {
  opacity: 0;
  transform: translateY(-3px);
}
.pricing-footnote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--ink-on-paper-mid);
  margin-top: var(--space-5);
  max-width: 62ch;
  font-weight: 300;
}
@media (max-width: 820px) {
  .pricing-matrix {
    grid-template-columns: 1fr;
  }
  .matrix-head {
    display: none;
  }
  .matrix-row > * {
    border-bottom: 0;
    padding: var(--space-2) var(--space-5);
  }
  .matrix-row {
    display: grid;
    grid-template-columns: 1fr;
    padding: var(--space-5);
    border-bottom: 1px solid var(--line);
  }
  .matrix-row:last-of-type {
    border-bottom: 0;
  }
}

/* ==========================================================================
   LIVE REQUEST INSPECTOR
   ========================================================================== */
.demo-lab {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: var(--space-6);
  align-items: stretch;
}
.demo-scenarios {
  display: grid;
  gap: var(--space-3);
}
.demo-scenario {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  min-height: 72px;
  padding: var(--space-4);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-on-paper);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.demo-scenario:hover,
.demo-scenario:focus-visible {
  border-color: var(--ink-on-paper);
  transform: translateX(3px);
}
.demo-scenario.is-active {
  border-color: var(--vermillion);
  background: var(--accent-soft);
}
.demo-scenario span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--vermillion);
}
.demo-scenario strong {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
}
.demo-console {
  border: 1px solid var(--ink-on-paper);
  background: var(--paper-deep);
  padding: var(--space-5);
  box-shadow: var(--shadow-technical);
}
.demo-terminal,
.demo-verdict {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  padding: var(--space-4);
}
.demo-label {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--ink-on-paper-muted);
}
.demo-terminal code {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--ink-on-paper);
  white-space: pre-wrap;
}
.demo-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
  padding: 0;
  list-style: none;
}
.demo-step {
  min-height: 86px;
  padding: var(--space-4);
  border: 1px dashed var(--line-strong);
  background: rgba(255,255,255,0.35);
}
.demo-step span {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ink-on-paper-muted);
}
.demo-step strong {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.45;
}
.demo-step.is-active {
  border-style: solid;
  border-color: var(--vermillion);
  background: var(--accent-soft);
}
.demo-verdict {
  margin-bottom: var(--space-4);
}
.demo-verdict strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--vermillion);
}
.demo-verdict p {
  margin-top: var(--space-2);
  color: var(--ink-on-paper-mid);
}
@media (max-width: 900px) {
  .demo-lab,
  .demo-steps {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   ROI SIMULATOR
   ========================================================================== */
.roi-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  gap: var(--space-8);
  align-items: start;
}
@media (max-width: 820px) {
  .roi-wrap {
    grid-template-columns: 1fr;
  }
}
.roi-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
  padding: var(--space-7);
  border: 1px solid var(--ink-on-paper);
  background: var(--surface);
}
.roi-control {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.roi-ctrl-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.roi-ctrl-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-on-paper);
}
.roi-ctrl-val {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  color: var(--vermillion);
}
.roi-ctrl-range {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--ink-on-paper-muted);
}
input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 2px;
  background: var(--line-strong);
  outline: none;
  border-radius: 0;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--vermillion);
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--vermillion-soft);
  transition: box-shadow var(--t-fast);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--vermillion);
  cursor: pointer;
  border: 0;
  box-shadow: 0 0 0 3px var(--vermillion-soft);
}
input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 5px var(--vermillion-soft);
}
.roi-output {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--ink-on-paper);
}
.roi-card {
  padding: var(--space-6) var(--space-7);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.roi-card:last-child {
  border-bottom: 0;
}
.roi-card-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
}
.roi-card-val {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink-on-paper);
}
.roi-card:first-child .roi-card-val {
  color: var(--vermillion);
}
.roi-card-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--ink-on-paper-mid);
  font-weight: 300;
}

/* ==========================================================================
   FLOW (7-step pipeline)
   ========================================================================== */
.flow-list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--ink-on-paper);
}
.flow-step {
  padding: var(--space-5) var(--space-4);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
}
.flow-step:last-child {
  border-right: 0;
}
.flow-step::after {
  content: "→";
  position: absolute;
  right: -8px;
  top: var(--space-5);
  font-family: var(--font-mono);
  color: var(--vermillion);
  background: var(--bg);
  padding: 0 4px;
  font-size: 14px;
  z-index: 1;
}
.flow-step:last-child::after {
  display: none;
}
.flow-num {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--vermillion);
}
.flow-step h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  color: var(--ink-on-paper);
}
.flow-step p {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--ink-on-paper-mid);
}
@media (max-width: 960px) {
  .flow-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-step {
    border-bottom: 1px solid var(--line);
  }
  .flow-step::after {
    display: none;
  }
}
@media (max-width: 560px) {
  .flow-list {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   STACK GRID (3 cards)
   ========================================================================== */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink-on-paper);
  border-left: 1px solid var(--ink-on-paper);
}
.stack-card {
  padding: var(--space-7) var(--space-6);
  border-right: 1px solid var(--ink-on-paper);
  border-bottom: 1px solid var(--ink-on-paper);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--surface);
}
.stack-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--vermillion);
}
.stack-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--ink-on-paper);
}
.stack-card p {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--ink-on-paper-mid);
}
.stack-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--line-strong);
}
.stack-card li {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--ink-on-paper-soft);
  position: relative;
  padding-left: var(--space-5);
}
.stack-card li::before {
  content: "§";
  position: absolute;
  left: 0;
  color: var(--vermillion);
  font-family: var(--font-serif);
  font-style: italic;
}
@media (max-width: 820px) {
  .stack-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   ROLLOUT (Day 1 / 7 / 30)
   ========================================================================== */
.rollout-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}
.rollout-step {
  padding: var(--space-6) var(--space-5);
  border: 1px solid var(--ink-on-paper);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
}
.rollout-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 38px;
  height: 1px;
  background: var(--vermillion);
}
.rollout-day {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--vermillion);
}
.rollout-step h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  color: var(--ink-on-paper);
}
.rollout-step p {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--ink-on-paper-mid);
}
@media (max-width: 720px) {
  .rollout-list {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   MARGINALIA (testimonial, academic sidenote)
   ========================================================================== */
.marginalia {
  padding: var(--section-pad) 0;
  max-width: 68ch;
  margin: 0 auto;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
}
.marg-meta {
  display: inline-flex;
  justify-content: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  margin-bottom: var(--space-7);
}
.marginalia blockquote {
  position: relative;
}
.marginalia blockquote::before {
  content: """";
  font-family: var(--font-serif);
  font-size: clamp(4rem, 8vw, 6rem);
  color: var(--vermillion);
  line-height: 0.5;
  opacity: 0.65;
  display: block;
  margin-bottom: var(--space-4);
}
.marginalia blockquote p {
  font-family: var(--font-serif);
  font-weight: 300;
  font-style: italic;
  font-size: var(--text-2xl);
  line-height: 1.4;
  color: var(--ink-on-paper);
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin-bottom: var(--space-6);
}
.marginalia cite {
  font-style: normal;
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-on-paper-mid);
}
.marginalia cite .cite-sep {
  color: var(--vermillion);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list {
  border-top: 1px solid var(--ink-on-paper);
  max-width: 72ch;
}
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 0;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-5) var(--space-2);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: var(--space-4);
  transition: background var(--t-fast);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  background: var(--accent-soft);
}
.faq-num {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--vermillion);
}
.faq-q {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-lg);
  color: var(--ink-on-paper);
  letter-spacing: -0.01em;
}
.faq-toggle {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  color: var(--ink-on-paper-mid);
  transition: transform var(--t-fast);
}
.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
  color: var(--vermillion);
}
.faq-a {
  padding: 0 var(--space-2) var(--space-6) calc(var(--space-2) + var(--space-6) + var(--space-4));
}
.faq-a p {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--ink-on-paper-mid);
  max-width: 62ch;
}
@media (max-width: 560px) {
  .faq-item summary {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-2);
  }
  .faq-toggle {
    grid-row: 1;
    grid-column: 2;
    justify-self: end;
  }
  .faq-q {
    grid-row: 2;
    grid-column: 1 / -1;
    font-size: var(--text-base);
  }
  .faq-a {
    padding-left: var(--space-2);
  }
}

/* ==========================================================================
   FINAL CTA + DEMO FORM
   ========================================================================== */
.final-cta {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--ink-on-paper);
  background: var(--surface);
  margin-inline: calc(var(--gutter) * -1);
  padding-inline: var(--gutter);
}
.final-cta-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-8);
  align-items: start;
  max-width: var(--container-wide);
  margin: 0 auto;
}
@media (max-width: 820px) {
  .final-cta-grid {
    grid-template-columns: 1fr;
  }
}
.final-cta-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.final-cta-list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--ink-on-paper-soft);
}
.tick {
  color: var(--vermillion);
  font-family: var(--font-mono);
  font-weight: 700;
}
.demo-form {
  background: var(--bg);
  border: 1px solid var(--ink-on-paper);
  padding: var(--space-7);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.form-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--ink-on-paper);
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-on-paper-mid);
}
.form-field input,
.form-field select {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink-on-paper);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--t-fast);
}
.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--vermillion);
  box-shadow: 0 0 0 3px var(--vermillion-soft);
}
.form-status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--ink-on-paper-mid);
  min-height: 1em;
}
.form-status.is-ok {
  color: var(--vermillion);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.paper-footer {
  padding: var(--section-pad) 0 var(--space-8);
  position: relative;
  z-index: 30;
  background: var(--bg);
  border-top: 1px solid var(--ink-on-paper);
  isolation: isolate;
}
.footer-rule {
  display: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-7);
  margin-bottom: var(--space-8);
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-logo {
  width: 44px;
  height: 44px;
  color: var(--ink-on-paper);
}
.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--text-2xl);
  letter-spacing: -0.04em;
  color: var(--ink-on-paper);
}
.footer-blurb {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: var(--text-base);
  color: var(--ink-on-paper-mid);
  max-width: 30ch;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-on-paper);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--line);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-col a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--ink-on-paper-mid);
  transition: color var(--t-fast);
}
.footer-col a:hover {
  color: var(--vermillion);
}
.footer-business {
  padding-top: var(--space-5);
  padding-bottom: var(--space-4);
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.footer-company {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  color: var(--ink-on-paper);
  margin-bottom: var(--space-1);
}
.footer-biz-line {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--ink-on-paper-mid);
}
.footer-ko {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  margin-left: var(--space-2);
}
.footer-license {
  padding: var(--space-5) 0 var(--space-4);
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-license-head {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}
.footer-license-body {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  line-height: 1.65;
  color: var(--ink-on-paper-mid);
  max-width: 72ch;
}
.footer-license-body a {
  color: var(--ink-on-paper);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent);
}
.footer-license-body a:hover {
  color: var(--accent);
}
.footer-license + .footer-meta {
  border-top: 1px solid var(--line);
}
.footer-business + .footer-meta {
  border-top: 1px solid var(--line);
}
.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--ink-on-paper-muted);
}
.footer-cite {
  color: var(--ink-on-paper);
}
.footer-signature {
  text-align: center;
  padding-top: var(--space-5);
}
.sig-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--vermillion);
}
@media (max-width: 820px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   MOBILE CTA BAR
   ========================================================================== */
.mobile-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 15;
  display: none;
  gap: var(--space-3);
  padding: var(--space-3) var(--gutter);
  background: var(--bg);
  border-top: 1px solid var(--ink-on-paper);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity 220ms var(--ease-soft), transform 260ms var(--ease-out);
}
body.is-footer-visible .mobile-cta-bar {
  opacity: 0;
  pointer-events: none;
  transform: translateY(110%);
}
.mobile-cta-bar .btn {
  flex: 1;
  justify-content: center;
}
.mobile-cta-bar .btn-ghost {
  flex: 0 0 auto;
  min-width: 100px;
}
@media (max-width: 720px) {
  .mobile-cta-bar {
    display: flex;
  }
  body {
    padding-bottom: 64px;
  }
}

/* ==========================================================================
   SELECTION + FOCUS STATES
   ========================================================================== */
::selection {
  background: var(--vermillion);
  color: var(--paper-strong);
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ==========================================================================
   REVEAL (scroll fade-in)
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 720ms var(--ease-out), transform 720ms var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   PRINT (paper truly becomes paper)
   ========================================================================== */
@media print {
  .paper-grid,
  .crop-marks,
  .tau-rail,
  .brand-film,
  .mobile-cta-bar,
  .nav-cta {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .fig {
    break-inside: avoid;
  }
}

/* ========================================================================
   Trust Center / Policy Pages
   ======================================================================== */
body.policy-doc-page {
  --header-h: clamp(104px, 9vw, 132px);
  background: var(--bg);
  color: var(--ink-on-paper);
  line-height: 1.62;
}

.policy-page-wrap {
  min-height: 100vh;
}

.policy-site-header .nav-links a[href="/trust"] {
  color: var(--accent);
}

.policy-main {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: calc(var(--header-h, 112px) + var(--space-5)) var(--gutter) var(--space-9);
}

.policy-hero {
  min-height: min(46svh, 480px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-bottom: 1px solid var(--line-strong);
  padding: var(--space-6) 0 var(--space-6);
  position: relative;
}

.policy-hero::before {
  content: "";
  position: absolute;
  inset: auto 0 var(--space-7) auto;
  width: min(42vw, 460px);
  height: min(42vw, 460px);
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--accent-soft), transparent 28%),
    repeating-conic-gradient(from 0deg, transparent 0deg 18deg, var(--line-soft) 18deg 20deg);
  opacity: 0.72;
  z-index: -1;
}

.policy-kicker,
.policy-section-num,
.policy-sidebar-title,
.trust-card span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.policy-hero h1 {
  max-width: 920px;
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(2.65rem, 6vw, 5.6rem);
  line-height: 0.96;
  font-weight: 300;
  letter-spacing: -0.065em;
}

.policy-subtitle {
  max-width: 760px;
  margin-top: var(--space-4);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.7vw, 1.42rem);
  line-height: 1.48;
  color: var(--ink-on-paper-soft);
}

.policy-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-7);
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line);
}

.policy-meta-grid div {
  min-height: 104px;
  padding: var(--space-4);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 76%, transparent);
}

.policy-meta-grid dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
}

.policy-meta-grid dd {
  margin-top: var(--space-3);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-on-paper);
}

.policy-meta-grid a,
.policy-article a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.policy-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.75rem);
  padding-top: var(--space-7);
}

.policy-sidebar {
  align-self: start;
  position: sticky;
  top: calc(var(--header-h, 112px) + var(--space-4));
  border-top: 1px solid var(--line-strong);
  padding-top: var(--space-4);
}

.policy-sidebar nav {
  display: grid;
  gap: 0;
  margin-top: var(--space-3);
  border-top: 1px solid var(--line);
}

.policy-nav-link {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-on-paper-soft);
  text-decoration: none;
  transition: color var(--t-base) var(--ease-out), padding-left var(--t-base) var(--ease-out);
}

.policy-nav-link span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: var(--ink-on-paper-muted);
}

.policy-nav-link strong {
  font-size: 0.92rem;
  font-weight: 500;
}

.policy-nav-link:hover,
.policy-nav-link.is-active {
  color: var(--accent);
  padding-left: 0.5rem;
}

.policy-article {
  min-width: 0;
  border-top: 1px solid var(--line-strong);
}

.policy-section {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  column-gap: clamp(1rem, 2.8vw, 2.25rem);
  row-gap: var(--space-3);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--line);
}

.policy-section h2 {
  grid-column: 2;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2.18rem);
  font-weight: 350;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.policy-body {
  grid-column: 2;
  max-width: 74ch;
}

.policy-body p,
.policy-section > p:not(.policy-section-num) {
  max-width: 74ch;
  font-size: clamp(0.95rem, 0.9rem + 0.18vw, 1.04rem);
  line-height: 1.72;
  color: var(--ink-on-paper-soft);
  overflow-wrap: anywhere;
}

.policy-body p + p {
  margin-top: var(--space-3);
}

.policy-section-num {
  grid-row: span 20;
  color: var(--ink-on-paper-muted);
}

.policy-note {
  grid-column: 2;
  max-width: 74ch;
  padding: var(--space-4);
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-8);
  border: 1px solid var(--line-strong);
  background: var(--line);
}

.trust-card {
  min-height: 250px;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  color: var(--ink-on-paper);
  text-decoration: none;
  transition:
    transform var(--t-base) var(--ease-out),
    background var(--t-base) var(--ease-out),
    color var(--t-base) var(--ease-out);
}

.trust-card:hover {
  transform: translateY(-2px);
  background: var(--surface-2);
  color: var(--accent);
}

.trust-card h2 {
  margin-top: var(--space-5);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.8vw, 2.35rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.045em;
}

.trust-card p {
  margin-top: var(--space-4);
  color: var(--ink-on-paper-soft);
  line-height: 1.65;
}

@media (max-width: 980px) {
  .policy-main {
    padding-top: calc(var(--header-h, 96px) + var(--space-5));
  }

  .policy-meta-grid,
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }

  .policy-layout {
    grid-template-columns: 1fr;
  }

  .policy-sidebar {
    position: relative;
    top: auto;
  }

  .policy-sidebar nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  .policy-hero {
    min-height: auto;
    padding-top: var(--space-7);
  }

  .policy-meta-grid,
  .trust-grid,
  .policy-sidebar nav {
    grid-template-columns: 1fr;
  }

  .policy-section {
    grid-template-columns: 1fr;
  }

  .policy-body,
  .policy-note,
  .policy-section > p:not(.policy-section-num),
  .policy-section h2,
  .policy-section-num {
    grid-column: 1;
  }
}

/* ==========================================================================
   MCP DOCS — code blocks, tool cards, param tables & action badges
   ADDED 2026-06-22 (lane: styles-impl-3). NEW BLOCK ONLY — appended at EOF;
   no existing rules modified. All values reuse existing :root design tokens
   (--font-mono L60, --text-sm/base L65-66, --surface L29, --line(-strong) L41-42,
   --ink-on-paper(-soft/-muted) L31-34, --accent(-soft) L36-38, --radius-sm/xs L93-94,
   --space-* L75-84). Visually consistent with .policy-* doc page (L2446-2740) and
   the only pre-existing code style .demo-terminal code (L1518-1525).
   Spec: .omk/runs/goal-20260622-landing-github-mcp-docs/evidence/r2/
         lane-h-mcp-docs-impl-algorithm.md §4.
   Line span of this block: see git diff (appended after the EOF media query).
   ========================================================================== */

/* --- Code blocks (pre/code) inside policy doc body -------------------------- */
.policy-body pre {
  margin: var(--space-4) 0;
  padding: var(--space-4);
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.policy-body pre code {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--ink-on-paper);
  white-space: pre;
  tab-size: 2;
}

/* Inline code in prose and tool names */
.policy-body code,
.mcp-tool-name code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--ink-on-paper);
  background: var(--accent-soft);
  padding: 0.08em 0.36em;
  border-radius: var(--radius-xs);
}

/* Reset background/padding for code that lives inside pre or the tool heading */
.policy-body pre code,
.mcp-tool-name code {
  background: none;
  padding: 0;
}

/* --- Tool cards (.mcp-tool) ------------------------------------------------ */
.mcp-tool {
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--line);
}

.mcp-tool-name {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--ink-on-paper);
}

.mcp-tool-desc {
  margin-top: var(--space-2);
  color: var(--ink-on-paper-soft);
  line-height: 1.6;
}

.mcp-tool-noargs {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--ink-on-paper-muted);
}

/* --- Action badges (read-only / mutating / destructive / scope) ------------ */
.mcp-tool-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-3) 0;
}

.mcp-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.25em 0.6em;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xs);
  color: var(--ink-on-paper-muted);
  background: none;
}

.mcp-badge.is-read {
  color: var(--ink-on-paper-soft);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.mcp-badge.is-write,
.mcp-badge.is-mutating {
  color: var(--ink-on-paper);
  border-color: var(--ink-on-paper-muted);
}

.mcp-badge.is-destructive {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* --- Parameter tables (.mcp-param-table) ----------------------------------- */
.mcp-param-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-3) 0;
}

.mcp-param-table th,
.mcp-param-table td {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--line);
  font-size: var(--text-sm);
  line-height: 1.5;
  vertical-align: top;
}

.mcp-param-table th {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-on-paper-muted);
  border-bottom: 1px solid var(--line-strong);
}

.mcp-param-table td {
  color: var(--ink-on-paper-soft);
}

.mcp-param-table tr:last-child td {
  border-bottom: none;
}

/* --- Narrow viewports: let wide param tables scroll horizontally ----------- */
@media (max-width: 640px) {
  .mcp-param-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
}
/* === end MCP DOCS block =================================================== */