/* ==========================================================================
   MINH NGUYEN — AI-NATIVE IC COACHING
   Warm Editorial Paper • Mobile Above-the-Fold Precision (390x844) • Zero Fluff
   ========================================================================== */

/* Fonts loaded via non-blocking <link rel="preconnect"> in index.html for Core Web Vitals */

:root {
  --bg-page: hsl(40, 33%, 97%);
  --bg-surface: hsl(40, 42%, 99%);
  --bg-subtle: hsl(38, 24%, 93%);
  --bg-muted: hsl(36, 19%, 88%);

  --bg-contrast: hsl(208, 24%, 11%);
  --bg-contrast-card: hsl(208, 21%, 15%);
  --bg-contrast-elevated: hsl(208, 19%, 19%);

  --ink-primary: hsl(212, 28%, 11%);
  --ink-secondary: hsl(212, 16%, 29%);
  --ink-muted: hsl(212, 12%, 44%);
  --ink-on-contrast: hsl(40, 30%, 96%);
  --ink-on-contrast-muted: hsl(38, 15%, 74%);

  --accent-forest: hsl(163, 47%, 21%);
  --accent-forest-hover: hsl(163, 50%, 16%);
  --accent-forest-soft: hsl(163, 32%, 92%);
  --accent-sage: hsl(161, 38%, 66%);

  --accent-terracotta: hsl(17, 68%, 46%);
  --accent-terracotta-soft: hsl(17, 58%, 93%);
  --accent-amber-contrast: hsl(20, 76%, 66%);

  --border-subtle: hsl(36, 18%, 84%);
  --border-strong: hsl(212, 18%, 68%);
  --border-contrast: hsl(208, 16%, 24%);
  --shadow-card: 0 1px 2px rgba(20, 27, 36, 0.04), 0 8px 24px -10px rgba(20, 27, 36, 0.07);
  --shadow-float: 0 16px 40px -12px rgba(20, 27, 36, 0.18);

  --font-serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --container-max: 1080px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --header-h: 58px;
}

[data-theme="dark"] {
  --bg-page: hsl(208, 24%, 10%);
  --bg-surface: hsl(208, 21%, 14%);
  --bg-subtle: hsl(208, 19%, 17%);
  --bg-muted: hsl(208, 17%, 22%);
  --ink-primary: hsl(40, 30%, 95%);
  --ink-secondary: hsl(38, 14%, 76%);
  --ink-muted: hsl(208, 12%, 62%);
  --accent-forest: hsl(161, 44%, 58%);
  --accent-forest-hover: hsl(161, 48%, 66%);
  --accent-forest-soft: hsla(161, 40%, 45%, 0.16);
  --accent-terracotta: hsl(19, 78%, 64%);
  --accent-terracotta-soft: hsla(19, 72%, 52%, 0.16);
  --border-subtle: hsl(208, 16%, 22%);
  --border-strong: hsl(208, 15%, 34%);
  --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.28), 0 12px 28px -10px rgba(0, 0, 0, 0.36);
  --shadow-float: 0 20px 48px -12px rgba(0, 0, 0, 0.55);
}

*, *::before, *::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 14px);
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.96rem;
  line-height: 1.54;
  color: var(--ink-primary);
  background-color: var(--bg-page);
  background-image: radial-gradient(rgba(20, 27, 36, 0.026) 1px, transparent 0);
  background-size: 20px 20px;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

[data-theme="dark"] body {
  background-image: radial-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 0);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--accent-forest);
  outline-offset: 2px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent-terracotta);
  z-index: 120;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.editorial-italic {
  font-style: italic;
  color: var(--accent-terracotta);
}

.text-link {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-forest);
  white-space: nowrap;
  flex-shrink: 0;
}

.text-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg-page) 91%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-mark {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.28rem;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-secondary);
}

.nav-link:hover {
  color: var(--ink-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  cursor: pointer;
}

.mobile-menu-toggle {
  display: none;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-size: 0.7rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.14s ease, background-color 0.16s ease, border-color 0.16s ease;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 8px 13px;
  font-size: 0.76rem;
}

.btn-lg {
  padding: 12px 18px;
  font-size: 0.88rem;
}

.btn-primary {
  background: var(--accent-forest);
  color: #FAF8F4;
}

[data-theme="dark"] .btn-primary {
  color: #0E1614;
}

.btn-primary:hover {
  background: var(--accent-forest-hover);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--ink-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--border-strong);
}

.btn-contrast {
  background: var(--accent-sage);
  color: #0E1614;
  font-weight: 700;
}

/* ==========================================================================
   HERO — AIRY ON DESKTOP, 100% ABOVE-THE-FOLD ON 390x844 MOBILE
   ========================================================================== */
.hero {
  padding: 44px 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: 36px;
  align-items: center;
}

.hero-overline,
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 10px;
}

.hero-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(2.25rem, 4.7vw, 3.85rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.hero-sublead {
  margin: 0 0 18px;
  font-size: 1.04rem;
  color: var(--ink-secondary);
  max-width: 56ch;
}

.capacity-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  margin-bottom: 18px;
}

.slot-pips {
  display: inline-flex;
  gap: 5px;
}

.slot-pip {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.slot-pip--filled {
  background: var(--ink-muted);
  opacity: 0.45;
}

.slot-pip--open {
  background: var(--accent-forest);
}

.capacity-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-primary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Portrait Card */
.portrait-card {
  position: relative;
  margin: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-card);
}

.cti-seal {
  position: absolute;
  top: -14px;
  right: -12px;
  width: 72px;
  height: 72px;
  z-index: 2;
}

.portrait-photo-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background: var(--bg-muted);
}

.portrait-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portrait-meta {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.portrait-name {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
}

.portrait-role {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-muted);
}

/* 4-Tile Credential Strip */
.proof-strip {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.proof-tile {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.proof-kpi {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  line-height: 1.1;
  margin-bottom: 3px;
}

.proof-desc {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-secondary);
  line-height: 1.35;
}

/* ==========================================================================
   SECTIONS & SHARED HEADERS
   ========================================================================== */
.section {
  padding: 56px 0;
  border-top: 1px solid var(--border-subtle);
}

.section--subtle {
  background: var(--bg-subtle);
}

.section--contrast {
  background: var(--bg-contrast);
  color: var(--ink-on-contrast);
  border-top-color: var(--border-contrast);
}

.section--contrast .eyebrow {
  color: var(--accent-amber-contrast);
}

.section--contrast .section-lead {
  color: var(--ink-on-contrast-muted);
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 20px;
  align-items: end;
  margin-bottom: 26px;
}

.section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.section-lead {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-secondary);
}

/* Pill Rails */
.pill-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.pill-rail::-webkit-scrollbar {
  display: none;
}

.pill-btn {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.pill-btn.is-active {
  background: var(--ink-primary);
  color: var(--bg-page);
  border-color: var(--ink-primary);
}

/* ==========================================================================
   01 / STAGE CONTRAST SIMULATOR
   ========================================================================== */
.simulator-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-card);
}

.simulator-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.view-mode-toggle {
  display: none;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 2px;
  background: var(--bg-subtle);
}

.view-mode-btn {
  padding: 4px 10px;
  border: none;
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
}

.view-mode-btn.is-active {
  background: var(--bg-surface);
  color: var(--ink-primary);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.compare-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.compare-card--trap {
  background: var(--bg-subtle);
}

.compare-card--native {
  background: var(--accent-forest-soft);
  border-color: color-mix(in srgb, var(--accent-forest) 30%, var(--border-subtle));
}

.compare-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  color: var(--ink-muted);
}

.compare-card--native .compare-tag {
  color: var(--accent-forest);
}

.compare-bullets {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: 8px;
  font-size: 0.88rem;
}

/* ==========================================================================
   02 / FOUR SKILLS GRID
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.skill-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.skill-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  margin-bottom: 6px;
}

.skill-title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.4rem;
  line-height: 1.12;
}

.skill-summary {
  margin: 0 0 10px;
  font-size: 0.88rem;
  color: var(--ink-secondary);
}

.skill-arrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-forest);
  padding-top: 8px;
  border-top: 1px dashed var(--border-subtle);
}

/* ==========================================================================
   03 / 60-SECOND CHECK (RANDOMIZED BOXES + SCORE HIDDEN UNTIL ALL 5 SELECTED)
   ========================================================================== */
.diagnostic-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(0, 0.62fr);
  gap: 18px;
  align-items: start;
}

.matrix-panel,
.radar-panel {
  background: var(--bg-contrast-card);
  border: 1px solid var(--border-contrast);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.radar-panel {
  position: sticky;
  top: calc(var(--header-h) + 16px);
}

.matrix-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 14px;
}

.matrix-instruction {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-on-contrast-muted);
}

.matrix-rows {
  display: grid;
  gap: 14px;
}

.matrix-row {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-contrast);
}

.matrix-row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.matrix-axis-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.matrix-axis-name {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-on-contrast);
}

.matrix-axis-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-on-contrast-muted);
}

.matrix-axis-status.is-done {
  color: var(--accent-sage);
}

.matrix-levels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.level-tap {
  display: grid;
  grid-template-columns: 15px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  padding: 10px 11px;
  border-radius: 8px;
  border: 1px solid var(--border-contrast);
  background: var(--bg-contrast-elevated);
  color: var(--ink-on-contrast);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.14s ease, background-color 0.14s ease, transform 0.12s ease;
}

.level-tap:active {
  transform: translateY(1px);
}

.level-radio {
  width: 14px;
  height: 14px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1.5px solid rgba(248, 245, 238, 0.34);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.14s ease;
}

.level-radio::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: transparent;
  transition: background-color 0.14s ease;
}

.level-copy {
  display: block;
  min-width: 0;
}

.level-tap-title {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.24;
  color: var(--ink-on-contrast);
  margin-bottom: 3px;
}

.level-tap-desc {
  display: block;
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.34;
  color: var(--ink-on-contrast-muted);
}

.level-tap:hover {
  border-color: var(--accent-sage);
}

.level-tap.is-selected {
  background: rgba(134, 200, 180, 0.18);
  border-color: var(--accent-sage);
}

.level-tap.is-selected .level-radio {
  border-color: var(--accent-sage);
  background: rgba(134, 200, 180, 0.22);
}

.level-tap.is-selected .level-radio::after {
  background: var(--accent-sage);
}

.level-tap.is-selected .level-tap-desc {
  color: rgba(248, 245, 238, 0.88);
}

/* Locked State (Hides Final Score Until All 5 Skills Are Selected) */
.radar-locked {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 18px 14px;
}

.locked-pips {
  display: inline-flex;
  gap: 7px;
  margin: 12px 0 6px;
}

.locked-pip {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid rgba(248, 245, 238, 0.28);
  background: transparent;
  transition: all 0.16s ease;
}

.locked-pip.is-filled {
  border-color: var(--accent-sage);
  background: var(--accent-sage);
}

.radar-locked-title {
  margin: 12px 0 4px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--ink-on-contrast);
}

.radar-locked-sub {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-on-contrast-muted);
  max-width: 28ch;
}

/* Unlocked Radar State */
.score-banner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.score-archetype {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--accent-amber-contrast);
}

.score-big {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1;
}

.radar-svg-wrap {
  display: flex;
  justify-content: center;
  margin: 4px 0 8px;
}

.radar-vertex-hit {
  cursor: pointer;
}

.bluf-readout {
  display: grid;
  gap: 6px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-contrast);
  border: 1px solid var(--border-contrast);
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--ink-on-contrast-muted);
}

.bluf-readout strong {
  color: var(--ink-on-contrast);
}

/* ==========================================================================
   04 / CLIENT IMPACT SNAPSHOTS (COMPACT 2x2)
   ========================================================================== */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.impact-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.impact-role {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.impact-tag {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-forest-soft);
  color: var(--accent-forest);
  font-weight: 600;
}

.impact-headline {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.32rem;
  line-height: 1.15;
}

.impact-steps {
  display: grid;
  gap: 5px;
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

.impact-steps p {
  margin: 0;
}

/* ==========================================================================
   05 / ABOUT & TIMELINE
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 24px;
  align-items: start;
}

.about-copy p {
  margin: 0 0 12px;
  font-size: 0.92rem;
  color: var(--ink-secondary);
}

.about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 4px;
}

.timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.timeline-card {
  padding: 13px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.timeline-era {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  margin-bottom: 3px;
}

.timeline-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

/* ==========================================================================
   06 / WORK TOGETHER & 07 / FAQ
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.step-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  margin-bottom: 4px;
}

.step-card h3 {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.3rem;
}

.step-card p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-secondary);
}

.cta-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
}

.cta-callout-text h3 {
  margin: 0 0 2px;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.45rem;
}

.cta-callout-text p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.36fr) minmax(0, 0.64fr);
  gap: 24px;
  align-items: start;
}

.faq-list {
  display: grid;
  gap: 8px;
}

.faq-item {
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.faq-trigger {
  width: 100%;
  padding: 13px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: none;
  border: none;
  text-align: left;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink-muted);
  transition: transform 0.16s ease;
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 16px 14px;
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

.faq-item.is-open .faq-answer {
  display: block;
}

/* ==========================================================================
   FOOTER & MODAL
   ========================================================================== */
.site-footer {
  padding: 28px 0 84px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--ink-secondary);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-disclaimer {
  margin: 4px 0 0;
  font-size: 0.74rem;
  color: var(--ink-muted);
  max-width: 66ch;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(14, 20, 27, 0.56);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-backdrop.is-open {
  display: flex;
}

.modal-sheet {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-float);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.modal-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.55rem;
}

.attached-score-pill {
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  background: var(--accent-forest-soft);
  color: var(--accent-forest);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
}

.form-grid {
  display: grid;
  gap: 10px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.field label {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-page);
  font-size: 0.86rem;
}

.field textarea {
  min-height: 54px;
  resize: vertical;
}

.brief-output {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.brief-output.is-visible {
  display: block;
}

.brief-preview {
  margin: 0 0 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.brief-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mobile-sticky-bar {
  display: none;
}

.toast {
  position: fixed;
  bottom: 74px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--ink-primary);
  color: var(--bg-page);
  padding: 8px 15px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  z-index: 260;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.is-shown {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   RESPONSIVE — MOBILE ABOVE-THE-FOLD MASTERY (390x844)
   ========================================================================== */
@media (max-width: 900px) {
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 14px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    box-shadow: var(--shadow-card);
  }

  .site-nav.is-open {
    display: flex;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  #header-apply-btn {
    display: none;
  }

  .hero-grid,
  .section-header,
  .diagnostic-layout,
  .about-grid,
  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .radar-panel {
    position: static;
  }

  .proof-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  /* Tight, airy above-the-fold Hero on 390x844 */
  .hero {
    padding: 16px 0 24px;
  }

  .hero-grid {
    gap: 14px;
  }

  /* Compact identity card at the top of mobile Hero for instant human trust */
  .portrait-card {
    order: -1;
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 11px;
    align-items: center;
    padding: 9px 12px;
    border-radius: var(--radius-md);
  }

  .portrait-photo-wrap {
    width: 54px;
    height: 54px;
    border-radius: 50%;
  }

  .cti-seal {
    width: 42px;
    height: 42px;
    top: -6px;
    right: -4px;
  }

  .portrait-meta {
    margin-top: 0;
  }

  .portrait-meta .text-link {
    display: none;
  }

  .hero-overline {
    margin-bottom: 6px;
    font-size: 0.66rem;
  }

  .hero-title {
    font-size: 2.15rem;
    line-height: 1.05;
    margin-bottom: 10px;
  }

  .hero-sublead {
    font-size: 0.92rem;
    line-height: 1.46;
    margin-bottom: 12px;
  }

  .capacity-pill {
    margin-bottom: 12px;
    padding: 5px 10px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 8px;
  }

  .hero-actions .btn-lg {
    padding: 11px 12px;
    font-size: 0.81rem;
  }

  .proof-strip {
    margin-top: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .proof-tile {
    padding: 9px 11px;
  }

  .proof-kpi {
    font-size: 1.08rem;
    margin-bottom: 1px;
  }

  .proof-desc {
    font-size: 0.71rem;
    line-height: 1.28;
  }

  .section {
    padding: 40px 0;
  }

  .skills-grid,
  .impact-grid,
  .form-row-2 {
    grid-template-columns: minmax(0, 1fr);
  }

  .view-mode-toggle {
    display: inline-flex;
  }

  .compare-grid[data-mobile-view="trap"] .compare-card--native {
    display: none;
  }

  .compare-grid[data-mobile-view="native"] .compare-card--trap {
    display: none;
  }

  .compare-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .matrix-levels {
    grid-template-columns: minmax(0, 1fr);
  }

  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal-sheet {
    max-width: 100%;
    max-height: 92vh;
    border-radius: 20px 20px 0 0;
    padding: 18px 16px calc(22px + env(safe-area-inset-bottom, 0px));
  }

  .mobile-sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 95;
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr);
    gap: 8px;
    padding: 9px 14px calc(9px + env(safe-area-inset-bottom, 0px));
    background: color-mix(in srgb, var(--bg-surface) 94%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-subtle);
  }

  body.modal-open .mobile-sticky-bar {
    display: none;
  }
}

/* ==========================================================================
   VISUAL LIVE EDITOR MODE (?edit=1 or Shift + E)
   ========================================================================== */
body.is-editing [data-edit-path] {
  outline: 1.5px dashed rgba(197, 75, 37, 0.48);
  outline-offset: 3px;
  border-radius: 4px;
  cursor: text;
}

body.is-editing [data-edit-path]:hover,
body.is-editing [data-edit-path]:focus {
  outline: 2px solid var(--accent-terracotta);
  background-color: rgba(197, 75, 37, 0.06);
}

.editor-dock {
  position: fixed;
  bottom: 18px;
  left: 18px;
  z-index: 250;
  width: min(356px, calc(100vw - 28px));
  background: var(--bg-contrast);
  color: var(--ink-on-contrast);
  border: 1px solid var(--border-contrast);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-float);
  padding: 13px;
  font-size: 0.76rem;
  display: none;
}

.editor-dock.is-active {
  display: block;
}

.editor-dock-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.editor-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-amber-contrast);
}

.editor-guard {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(134, 200, 180, 0.16);
  color: var(--accent-sage);
}

.editor-guard.is-warn {
  background: rgba(235, 148, 102, 0.22);
  color: var(--accent-amber-contrast);
}

.editor-hint {
  margin: 0 0 10px;
  color: var(--ink-on-contrast-muted);
  line-height: 1.4;
}

.editor-controls {
  display: grid;
  gap: 7px;
  margin-bottom: 10px;
  padding: 9px;
  border-radius: var(--radius-sm);
  background: var(--bg-contrast-card);
  border: 1px solid var(--border-contrast);
}

.editor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.editor-row label,
.editor-field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  color: var(--ink-on-contrast-muted);
  margin-bottom: 2px;
}

.stepper {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.stepper-btn {
  width: 25px;
  height: 25px;
  border-radius: 6px;
  border: 1px solid var(--border-contrast);
  background: var(--bg-contrast-elevated);
  color: var(--ink-on-contrast);
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
}

.stepper-val {
  min-width: 40px;
  text-align: center;
  font-family: var(--font-mono);
  font-weight: 600;
}

.editor-input {
  width: 100%;
  padding: 5px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-contrast);
  background: var(--bg-contrast);
  color: var(--ink-on-contrast);
  font-size: 0.73rem;
}

.editor-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.editor-btn {
  flex: 1 1 auto;
  padding: 7px 9px;
  border-radius: 6px;
  border: 1px solid var(--border-contrast);
  background: var(--bg-contrast-card);
  color: var(--ink-on-contrast);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  cursor: pointer;
}

.editor-btn--primary {
  background: var(--accent-sage);
  color: #0E1614;
  border-color: transparent;
}

@media (max-width: 640px) {
  .editor-dock {
    bottom: 64px;
    left: 12px;
    right: 12px;
    width: auto;
  }
}