/* ==========================================================================
   Anthropic, PBC — Form S-1 IPO Roadshow Summary
   Editorial Design System & Desktop Stylesheet (>= 1280px)
   Palette: Warm Paper (#FAF8F4), Terracotta Clay (#D97757), Sage (#4E7A63),
            Mineral Slate (#3F647E), Obsidian Ink (#141413)
   ========================================================================== */

:root {
  /* Required Spec Palette Variables */
  --bg-page: #FAF8F4;
  --bg-surface: #FFFFFF;
  --bg-muted: #F1EDE4;
  --bg-dark: #141413;
  --text-primary: #141413;
  --text-secondary: #52504A;
  --text-muted: #7D7970;
  --accent-clay: #D97757;
  --accent-clay-dark: #B85B3B;
  --accent-sage: #4E7A63;
  --accent-slate: #3F647E;
  --accent-amber: #C48A2C;
  --border-subtle: #E4DFD3;
  --border-strong: #C9C2B2;

  /* Editorial Typography & Rhythm Tokens */
  --font-serif: Georgia, "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Derived Tints & Elevation */
  --tint-clay: rgba(217, 119, 87, 0.10);
  --tint-clay-strong: rgba(217, 119, 87, 0.22);
  --tint-sage: rgba(78, 122, 99, 0.11);
  --tint-slate: rgba(63, 100, 126, 0.11);
  --tint-amber: rgba(196, 138, 44, 0.12);
  --pos-ink: #2B6649;
  --pos-bg: rgba(78, 122, 99, 0.085);
  --neg-ink: #A63D2F;
  --neg-bg: rgba(184, 91, 59, 0.075);

  --radius-xs: 5px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-subtle: 0 1px 2px rgba(20, 20, 19, 0.03), 0 6px 18px rgba(20, 20, 19, 0.028);
  --shadow-card: 0 2px 6px rgba(20, 20, 19, 0.035), 0 12px 28px rgba(20, 20, 19, 0.045);
  --shadow-hover: 0 4px 12px rgba(20, 20, 19, 0.055), 0 16px 36px rgba(20, 20, 19, 0.07);
}

/* --------------------------------------------------------------------------
   1. Base Reset & Editorial Typography
   -------------------------------------------------------------------------- */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  padding: 0;
  min-width: 1280px;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.62;
  overflow-x: clip;
}

::selection {
  background-color: rgba(217, 119, 87, 0.22);
  color: var(--text-primary);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-weight: 600;
  margin: 0 0 0.55em;
  letter-spacing: -0.018em;
  line-height: 1.22;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.13;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 1.95rem;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.28;
}

h4 {
  font-size: 1.05rem;
  line-height: 1.34;
}

h5,
h6 {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin: 0 0 0.45em;
}

p {
  margin: 0 0 0.85em;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--accent-clay-dark);
  text-decoration: underline;
  text-decoration-color: rgba(184, 91, 59, 0.35);
  text-underline-offset: 3px;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

a:hover {
  color: var(--text-primary);
  text-decoration-color: var(--accent-clay);
}

strong,
b {
  color: var(--text-primary);
  font-weight: 600;
}

small {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

hr {
  border: 0;
  border-top: 1px solid var(--border-subtle);
  margin: 20px 0;
}

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.84em;
  font-variant-numeric: tabular-nums;
  background-color: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--text-primary);
}

blockquote {
  margin: 16px 0;
  padding: 14px 20px;
  border-left: 3px solid var(--accent-clay);
  background-color: rgba(241, 237, 228, 0.65);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.58;
  color: var(--text-primary);
}

ul,
ol {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--text-secondary);
}

li + li {
  margin-top: 6px;
}

li::marker {
  color: var(--accent-clay);
}

dl {
  margin: 0;
  display: grid;
  gap: 10px;
}

dt {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.055em;
  color: var(--text-muted);
}

dd {
  margin: 2px 0 0;
  font-size: 0.925rem;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* Global Tabular Numerals Contract */
table,
th,
td,
.num,
.kpi-value,
.kpi-sub,
.pill,
.slide-tag,
.tab-btn,
.chart-tooltip,
.chart-stage,
svg text,
.tabular {
  font-variant-numeric: tabular-nums lining-nums;
}

/* --------------------------------------------------------------------------
   2. Sticky Top Navigation (.top-nav)
   -------------------------------------------------------------------------- */

.top-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
  padding: 10px max(48px, calc((100% - 1344px) / 2));
  background-color: rgba(250, 248, 244, 0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset, 0 4px 16px rgba(20, 20, 19, 0.03);
}

/* Support optional single inner container inside .top-nav */
.top-nav > :only-child {
  width: 100%;
  max-width: 1344px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.top-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.top-nav li + li {
  margin-top: 0;
}

.top-nav nav,
.nav-links,
.top-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.top-nav nav::-webkit-scrollbar,
.nav-links::-webkit-scrollbar,
.top-nav-links::-webkit-scrollbar {
  display: none;
}

.nav-brand,
.top-nav-brand,
.nav-left,
.nav-right,
.nav-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-title,
.brand-title,
.top-nav strong {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

.ticker-badge,
.nav-ticker,
.badge-ticker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background-color: var(--bg-dark);
  color: #FAF8F4;
  border-left: 3px solid var(--accent-clay);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.pricing-badge,
.nav-pricing,
.price-badge,
.offering-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background-color: var(--tint-clay);
  color: var(--accent-clay-dark);
  border: 1px solid rgba(217, 119, 87, 0.34);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-muted);
  text-decoration: none;
}

.nav-link.is-active {
  background-color: var(--bg-dark);
  color: #FAF8F4;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(20, 20, 19, 0.16);
}

.nav-link.is-active::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-clay);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   3. Page Shell & Section Structure
   -------------------------------------------------------------------------- */

.page-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px 48px 80px;
}

section[id],
.section-block {
  scroll-margin-top: 84px;
}

.section-block:not(.hero-banner) {
  padding-top: 46px;
  margin-bottom: 60px;
  border-top: 1px solid var(--border-subtle);
}

.section-block:first-child:not(.hero-banner) {
  padding-top: 12px;
  border-top: none;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-clay-dark);
}

.section-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 1.5px;
  background-color: var(--accent-clay);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.05rem;
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.022em;
  color: var(--text-primary);
  margin: 0;
}

.section-desc {
  font-family: var(--font-sans);
  font-size: 0.96875rem;
  line-height: 1.66;
  color: var(--text-secondary);
  max-width: 940px;
  margin: 2px 0 0;
}

/* Consistent Vertical Rhythm Across Stacked Blocks Inside Sections & Panels */
:where(.section-block, .tab-panel) > :not(.section-header):not(.tab-panel):not(.tab-bar) + :not(.tab-panel) {
  margin-top: 24px;
}

/* --------------------------------------------------------------------------
   4. Hero Banner & 6-KPI Bento Grid (.hero-banner, .hero-kpi-grid)
   -------------------------------------------------------------------------- */

.hero-banner,
.section-block.hero-banner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  gap: 36px;
  align-items: stretch;
  background: linear-gradient(155deg, #FFFFFF 0%, #F7F3EA 100%);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--accent-clay);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  margin-bottom: 52px;
  box-shadow: var(--shadow-card);
  position: relative;
}

/* Any full-width 3rd+ child strip inside .hero-banner spans both columns */
.hero-banner > :nth-child(n + 3) {
  grid-column: 1 / -1;
  margin-top: 4px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.hero-banner > :first-child {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.hero-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.15rem, 2.65vw, 2.75rem);
  line-height: 1.13;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin: 4px 0 8px;
}

.hero-banner p {
  font-size: 1rem;
  line-height: 1.66;
  color: var(--text-secondary);
}

.hero-kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-content: stretch;
}

.kpi-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
  position: relative;
  box-shadow: 0 1px 3px rgba(20, 20, 19, 0.025);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card);
}

.kpi-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1.35;
}

.kpi-value {
  font-family: var(--font-serif);
  font-size: 1.95rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.022em;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums lining-nums;
  margin: 2px 0;
}

.kpi-sub {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   5. Badges & Citations (.pill, .slide-tag)
   -------------------------------------------------------------------------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.015em;
  color: var(--text-primary);
  background-color: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.pill-clay {
  background-color: var(--tint-clay);
  color: var(--accent-clay-dark);
  border-color: rgba(217, 119, 87, 0.34);
}

.pill-sage {
  background-color: var(--tint-sage);
  color: var(--accent-sage);
  border-color: rgba(78, 122, 99, 0.32);
}

.pill-slate {
  background-color: var(--tint-slate);
  color: var(--accent-slate);
  border-color: rgba(63, 100, 126, 0.32);
}

.pill-amber {
  background-color: var(--tint-amber);
  color: #9A691B;
  border-color: rgba(196, 138, 44, 0.34);
}

.pill-dark {
  background-color: var(--bg-dark);
  color: #FAF8F4;
  border-color: var(--bg-dark);
}

.slide-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  width: fit-content;
  align-self: flex-start;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  line-height: 1.4;
  color: var(--text-muted);
  background-color: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
  vertical-align: middle;
}

/* Pill rows / tag clusters */
.pill-row,
.tag-row,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

/* --------------------------------------------------------------------------
   6. Grid Helpers & Bento System (.grid-2, .grid-3, .grid-4, .bento-grid)
   -------------------------------------------------------------------------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
  align-items: stretch;
}

.span-2,
.col-span-2,
.bento-span-2,
.bento-wide {
  grid-column: span 2;
}

.span-3,
.col-span-3,
.bento-span-3 {
  grid-column: span 3;
}

.span-full,
.col-span-full,
.full-width {
  grid-column: 1 / -1;
}

/* --------------------------------------------------------------------------
   7. Architecture, Flywheel Loops, Model Matrix, Case Studies & Founders
   -------------------------------------------------------------------------- */

/* Architecture Stack & Distinct Layered Tiers */
.arch-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: linear-gradient(180deg, #F4F0E7 0%, #EDE8DC 100%);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  position: relative;
}

.arch-layer {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-clay);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  position: relative;
  box-shadow: 0 2px 6px rgba(20, 20, 19, 0.035);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

/* Structural vertical connector between stacked architecture layers */
.arch-stack > .arch-layer + .arch-layer::before {
  content: "";
  position: absolute;
  top: -17px;
  left: 32px;
  width: 2px;
  height: 16px;
  background-color: var(--border-strong);
}

.arch-stack > .arch-layer:nth-of-type(1) {
  border-left-color: var(--accent-clay);
}

.arch-stack > .arch-layer:nth-of-type(2) {
  border-left-color: var(--accent-slate);
}

.arch-stack > .arch-layer:nth-of-type(3) {
  border-left-color: var(--accent-sage);
}

.arch-stack > .arch-layer:nth-of-type(4) {
  border-left-color: var(--accent-amber);
}

.arch-stack > .arch-layer:nth-of-type(5) {
  border-left-color: var(--bg-dark);
}

.arch-layer:hover {
  transform: translateX(2px);
  border-right-color: var(--border-strong);
  border-top-color: var(--border-strong);
  border-bottom-color: var(--border-strong);
  box-shadow: var(--shadow-card);
}

.arch-layer h3,
.arch-layer h4 {
  margin-bottom: 6px;
}

/* Self-Reinforcing Flywheel Loops */
.loop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 22px;
  align-items: stretch;
}

.loop-grid > * {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--accent-clay);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-subtle);
}

.loop-grid > *:nth-child(2) {
  border-top-color: var(--accent-sage);
}

/* 4-Tier Claude Model Family Matrix (Haiku, Sonnet, Opus, Mythos/Fable) */
.model-tier-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.tier-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--accent-slate);
  border-radius: 14px;
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.tier-card:nth-child(1) {
  border-top-color: var(--accent-sage);
}

.tier-card:nth-child(2) {
  border-top-color: var(--accent-slate);
}

.tier-card:nth-child(3) {
  border-top-color: var(--accent-clay);
}

.tier-card:nth-child(4) {
  border-top-color: var(--accent-amber);
  background: linear-gradient(180deg, #FFFDF9 0%, #FAF3E5 100%);
  border-color: rgba(196, 138, 44, 0.35);
}

.tier-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

/* 6 Lighthouse Customer Proof Points Grid */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

.case-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.case-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card);
}

/* 7 of 7 Co-Founders Grid */
.founder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
  align-items: stretch;
}

.founder-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-clay);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.founder-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  border-left-color: var(--accent-clay-dark);
  box-shadow: var(--shadow-card);
}

/* --------------------------------------------------------------------------
   8. Editorial Cards & Surface Variants
      (.card, .card-dark, .card-clay, .card-sage, .card-slate)
      Placed after structural cards so modifiers cleanly theme any card!
   -------------------------------------------------------------------------- */

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-subtle);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--border-strong);
}

/* Terracotta Clay Editorial Surface */
.card-clay {
  background: linear-gradient(180deg, #FDF6F3 0%, #F9EFEA 100%);
  border: 1px solid rgba(217, 119, 87, 0.34);
  border-top: 3px solid var(--accent-clay);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-subtle);
}

.card-clay .kpi-label,
.card-clay .section-eyebrow {
  color: var(--accent-clay-dark);
}

/* Botanical Sage Editorial Surface */
.card-sage {
  background: linear-gradient(180deg, #F4F8F5 0%, #ECF3EE 100%);
  border: 1px solid rgba(78, 122, 99, 0.32);
  border-top: 3px solid var(--accent-sage);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-subtle);
}

.card-sage .kpi-label,
.card-sage .section-eyebrow {
  color: var(--accent-sage);
}

/* Mineral Slate Editorial Surface */
.card-slate {
  background: linear-gradient(180deg, #F3F6F9 0%, #EBF1F6 100%);
  border: 1px solid rgba(63, 100, 126, 0.32);
  border-top: 3px solid var(--accent-slate);
  border-radius: 14px;
  padding: 24px 26px;
  box-shadow: var(--shadow-subtle);
}

.card-slate .kpi-label,
.card-slate .section-eyebrow {
  color: var(--accent-slate);
}

/* Obsidian Ink Dark Surface (#141413) with Full Contrast Inheritance */
.card-dark {
  background: linear-gradient(165deg, #1B1B19 0%, #141413 100%);
  border: 1px solid #2E2D29;
  border-top: 3px solid var(--accent-clay);
  border-radius: 14px;
  padding: 24px 26px;
  color: #FAF8F4;
  box-shadow: 0 8px 28px rgba(20, 20, 19, 0.16);
}

.card-dark h1,
.card-dark h2,
.card-dark h3,
.card-dark h4,
.card-dark h5,
.card-dark h6,
.card-dark strong,
.card-dark b,
.card-dark dd,
.card-dark .kpi-value {
  color: #FAF8F4;
}

.card-dark p,
.card-dark li,
.card-dark .kpi-sub {
  color: #CEC9BE;
}

.card-dark small,
.card-dark dt,
.card-dark .kpi-label {
  color: #9E998E;
}

.card-dark a {
  color: #F09A7E;
  text-decoration-color: rgba(240, 154, 126, 0.4);
}

.card-dark hr {
  border-top-color: rgba(250, 248, 244, 0.12);
}

.card-dark code {
  background-color: rgba(250, 248, 244, 0.09);
  border-color: rgba(250, 248, 244, 0.16);
  color: #FAF8F4;
}

.card-dark .pill {
  background-color: rgba(217, 119, 87, 0.18);
  border-color: rgba(217, 119, 87, 0.38);
  color: #F4A990;
}

.card-dark .slide-tag {
  background-color: rgba(250, 248, 244, 0.08);
  border-color: rgba(250, 248, 244, 0.16);
  color: #CFCAC0;
}

/* Preserve compact padding when surface modifiers are applied to .kpi-card */
.kpi-card.card-dark,
.kpi-card.card-clay,
.kpi-card.card-sage,
.kpi-card.card-slate {
  padding: 18px 20px;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   9. Institutional Financial & Offering Tables
      (.data-table-wrap, .data-table, .num, .row-highlight, .row-total, .neg, .pos)
   -------------------------------------------------------------------------- */

.data-table-wrap {
  width: 100%;
  overflow-x: auto;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  box-shadow: var(--shadow-subtle);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  line-height: 1.46;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums lining-nums;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 16px 20px 12px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.data-table thead th {
  background-color: var(--bg-muted);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1.5px solid var(--border-strong);
  white-space: nowrap;
}

.data-table thead th:first-child,
.data-table tbody td:first-child {
  padding-left: 20px;
}

.data-table thead th:last-child,
.data-table tbody td:last-child {
  padding-right: 20px;
}

.data-table tbody td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
  color: var(--text-primary);
}

.data-table tbody td:first-child {
  font-weight: 500;
}

.data-table tbody tr:last-child:not(.row-total) td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background-color: rgba(241, 237, 228, 0.5);
}

.num,
.data-table th.num,
.data-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums lining-nums;
  white-space: nowrap;
}

/* Highlighted Analytical Rows (e.g., Compute Efficiency, Margin Inflection) */
.data-table tbody tr.row-highlight {
  background-color: rgba(217, 119, 87, 0.075);
}

.data-table tbody tr.row-highlight:hover {
  background-color: rgba(217, 119, 87, 0.12);
}

.data-table tbody tr.row-highlight td {
  font-weight: 600;
  color: var(--text-primary);
  border-top: 1px solid rgba(217, 119, 87, 0.26);
  border-bottom: 1px solid rgba(217, 119, 87, 0.26);
}

.data-table tbody tr.row-highlight td:first-child {
  box-shadow: inset 3px 0 0 var(--accent-clay);
}

/* Accounting Subtotal / Total Rows (S-1 Prospectus Double-Rule Tradition) */
.data-table tbody tr.row-total {
  background-color: var(--bg-muted);
}

.data-table tbody tr.row-total:hover {
  background-color: #EAE4D7;
}

.data-table tbody tr.row-total td {
  font-weight: 700;
  color: var(--text-primary);
  padding-top: 13px;
  padding-bottom: 13px;
  border-top: 1.5px solid var(--text-primary);
  border-bottom: 3px double var(--border-strong);
}

/* Positive & Negative Financial Value Highlighting (Table Cells & Inline Spans) */
.pos {
  color: var(--pos-ink);
  font-weight: 600;
}

.neg {
  color: var(--neg-ink);
  font-weight: 500;
}

/* Table cell specific highlight washes (keeps display: table-cell intact) */
td.pos,
th.pos {
  color: var(--pos-ink);
  font-weight: 600;
  background-color: var(--pos-bg);
}

td.neg,
th.neg {
  color: var(--neg-ink);
  background-color: var(--neg-bg);
}

.row-total td.pos,
.row-highlight td.pos {
  color: #1F543A;
  font-weight: 700;
  background-color: rgba(78, 122, 99, 0.13);
}

.row-total td.neg,
.row-highlight td.neg {
  color: #932F21;
  font-weight: 700;
  background-color: rgba(184, 91, 59, 0.11);
}

/* Inline span/badge positive & negative pills outside raw table cells */
:where(:not(td):not(th):not(tr):not(.pill)).pos {
  background-color: var(--tint-sage);
  color: var(--pos-ink);
  padding: 1px 6px;
  border-radius: 4px;
}

:where(:not(td):not(th):not(tr):not(.pill)).neg {
  background-color: rgba(184, 91, 59, 0.11);
  color: var(--neg-ink);
  padding: 1px 6px;
  border-radius: 4px;
}

.pill.pos {
  background-color: var(--tint-sage);
  border-color: rgba(78, 122, 99, 0.32);
  color: var(--pos-ink);
}

.pill.neg {
  background-color: rgba(184, 91, 59, 0.11);
  border-color: rgba(184, 91, 59, 0.3);
  color: var(--neg-ink);
}

.card-dark .pos {
  color: #8CD3AC;
  background-color: rgba(78, 122, 99, 0.24);
}

.card-dark .neg {
  color: #F59D84;
  background-color: rgba(217, 119, 87, 0.22);
}

/* --------------------------------------------------------------------------
   10. Interactive Tabs (.tab-bar, .tab-btn, .tab-panel)
   -------------------------------------------------------------------------- */

.tab-bar {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 5px;
  background-color: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin-bottom: 22px;
}

.tab-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.35;
  padding: 8px 16px;
  border-radius: 7px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.tab-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.55);
}

.tab-btn:focus-visible {
  outline: 2px solid var(--accent-clay);
  outline-offset: 2px;
}

.tab-btn.is-active {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-subtle);
  box-shadow: inset 0 -2px 0 var(--accent-clay), 0 1px 3px rgba(20, 20, 19, 0.08);
}

.tab-panel {
  display: none;
}

.tab-panel:not(.is-active) {
  display: none !important;
}

.tab-panel.is-active {
  display: block;
  animation: tabPanelReveal 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.tab-panel.is-active:is(.grid-2, .grid-3, .grid-4, .bento-grid, .case-grid, .model-tier-grid, .loop-grid, .founder-grid) {
  display: grid;
}

.tab-panel.is-active.arch-stack {
  display: flex;
}

@keyframes tabPanelReveal {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   11. Data Visualization Containers, Controls & Floating Tooltip
       (.chart-card, .chart-header, .chart-controls, .chart-stage, .chart-tooltip)
   -------------------------------------------------------------------------- */

.chart-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-subtle);
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.chart-header h3,
.chart-header h4 {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.chart-header p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.chart-controls,
#rev-chart-controls {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px;
  background-color: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.chart-controls button,
#rev-chart-controls button {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.chart-controls button:hover,
#rev-chart-controls button:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.6);
}

.chart-controls button.is-active,
.chart-controls button.active,
.chart-controls button[aria-pressed="true"],
#rev-chart-controls button.is-active,
#rev-chart-controls button.active,
#rev-chart-controls button[aria-pressed="true"] {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-subtle);
  box-shadow: inset 0 -2px 0 var(--accent-clay), 0 1px 2px rgba(20, 20, 19, 0.08);
}

.chart-stage,
#chart-rev-compute,
#chart-terminal-bench,
#chart-internal-loop,
#chart-cowork-vs-code,
#chart-sector-compounding,
#chart-customer-cohorts,
#chart-opex-leverage,
#chart-compute-commitments {
  position: relative;
  width: 100%;
}

:is(
  .chart-stage,
  #chart-rev-compute,
  #chart-terminal-bench,
  #chart-internal-loop,
  #chart-cowork-vs-code,
  #chart-sector-compounding,
  #chart-customer-cohorts,
  #chart-opex-leverage,
  #chart-compute-commitments
):empty {
  min-height: 220px;
}

.chart-stage svg,
svg:is(
  #chart-rev-compute,
  #chart-terminal-bench,
  #chart-internal-loop,
  #chart-cowork-vs-code,
  #chart-sector-compounding,
  #chart-customer-cohorts,
  #chart-opex-leverage,
  #chart-compute-commitments
),
#chart-rev-compute svg,
#chart-terminal-bench svg,
#chart-internal-loop svg,
#chart-cowork-vs-code svg,
#chart-sector-compounding svg,
#chart-customer-cohorts svg,
#chart-opex-leverage svg,
#chart-compute-commitments svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums lining-nums;
}

/* Interactive SVG Data Targets */
svg [data-tip-title],
svg [data-tip-body] {
  cursor: pointer;
  transition: opacity 0.15s ease, filter 0.15s ease;
}

svg [data-tip-title]:hover,
svg [data-tip-body]:hover {
  filter: brightness(1.07);
}

/* Optional HTML Legend Support */
.chart-legend,
.legend-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

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

.legend-swatch,
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

/* Floating Chart Tooltip (#chart-tooltip / .chart-tooltip) */
.chart-tooltip,
#chart-tooltip {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  pointer-events: none;
  min-width: 185px;
  max-width: 320px;
  padding: 11px 14px;
  background-color: rgba(20, 20, 19, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #FAF8F4;
  border: 1px solid rgba(228, 223, 211, 0.22);
  border-top: 2.5px solid var(--accent-clay);
  border-radius: 10px;
  box-shadow: 0 14px 34px rgba(20, 20, 19, 0.28), 0 3px 10px rgba(20, 20, 19, 0.18);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.5;
  font-variant-numeric: tabular-nums lining-nums;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.14s ease, transform 0.14s ease;
}

.chart-tooltip[hidden],
#chart-tooltip[hidden] {
  display: none;
}

.chart-tooltip.is-visible,
#chart-tooltip.is-visible,
.chart-tooltip.is-active,
#chart-tooltip.is-active {
  opacity: 1;
  transform: translateY(0);
}

.chart-tooltip .tip-title,
.chart-tooltip .tooltip-title,
.chart-tooltip .chart-tooltip-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
  color: #FFFFFF;
  margin: 0 0 5px;
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(250, 248, 244, 0.14);
}

.chart-tooltip .tip-body,
.chart-tooltip .tooltip-body,
.chart-tooltip .chart-tooltip-body {
  color: #DDD8CD;
  font-size: 0.8rem;
  line-height: 1.52;
  white-space: pre-line;
}

.chart-tooltip strong,
.chart-tooltip b {
  color: #FFFFFF;
  font-weight: 700;
}

.chart-tooltip p {
  color: #DDD8CD;
  margin: 0 0 4px;
}

.chart-tooltip p:last-child {
  margin-bottom: 0;
}

.chart-tooltip .tip-row,
.chart-tooltip .tooltip-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

/* --------------------------------------------------------------------------
   12. Semantic Text Helpers & Prospectus Footer
   -------------------------------------------------------------------------- */

.text-clay {
  color: var(--accent-clay-dark);
}

.text-sage {
  color: var(--accent-sage);
}

.text-slate {
  color: var(--accent-slate);
}

.text-amber {
  color: var(--accent-amber);
}

.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

.serif {
  font-family: var(--font-serif);
}

footer,
.page-footer,
.site-footer,
.prospectus-footer {
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.62;
}

footer p,
.page-footer p,
.site-footer p,
.prospectus-footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
}