:root {
  color-scheme: light;
  --bg: #f4f6f0;
  --surface: rgba(255, 255, 250, 0.82);
  --surface-strong: #fffffb;
  --ink: #11131a;
  --ink-soft: #373b45;
  --muted: #737781;
  --line: rgba(17, 19, 26, 0.14);
  --line-strong: rgba(17, 19, 26, 0.28);
  --accent: #0d5b52;
  --accent-2: #174f92;
  --gold: #c7a857;
  --friction: #b85f3b;
  --glow: rgba(10, 75, 143, 0.22);
  --reader-bg: #fffdf7;
  --reader-ink: #151515;
  --container: 1160px;
  --wide: 1380px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --sans: Inter, Geist, "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #07080d;
  --surface: rgba(17, 21, 32, 0.68);
  --surface-strong: #111520;
  --ink: #f4f1e8;
  --ink-soft: #d4d0c6;
  --muted: #9a9eaa;
  --line: rgba(244, 241, 232, 0.14);
  --line-strong: rgba(244, 241, 232, 0.3);
  --accent: #77b7ff;
  --accent-2: #50d6b6;
  --gold: #d8bd6a;
  --friction: #f08a61;
  --glow: rgba(119, 183, 255, 0.28);
  --reader-bg: #10131d;
  --reader-ink: #f5f0e6;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% 8%, var(--glow), transparent 30rem),
    linear-gradient(90deg, rgba(127, 127, 127, 0.055) 1px, transparent 1px),
    linear-gradient(180deg, rgba(127, 127, 127, 0.055) 1px, transparent 1px),
    var(--bg);
  background-size: auto, 42px 42px, 42px 42px, auto;
  color: var(--ink);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
  transition:
    background-color 360ms var(--ease),
    color 360ms var(--ease);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

::selection {
  background: rgba(199, 168, 87, 0.34);
}

.scroll-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  height: 3px;
  background: transparent;
}

.scroll-progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--gold));
  box-shadow: 0 0 18px var(--glow);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 90;
  transform: translateY(-150%);
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
}

.skip-link:focus {
  transform: translateY(0);
}

section[id] {
  scroll-margin-top: 96px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  min-height: 72px;
  padding: 0 max(18px, calc((100vw - var(--container)) / 2));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  min-height: 44px;
  text-decoration: none;
  font-weight: 820;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.78rem;
}

.nav-links {
  justify-self: end;
  gap: 4px;
}

.nav-links a {
  min-height: 42px;
  padding: 12px 10px;
  border-radius: 999px;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  transition:
    background-color 220ms var(--ease),
    color 220ms var(--ease),
    transform 220ms var(--ease);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.is-active {
  transform: translateY(-1px);
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 11%, transparent);
  outline: none;
}

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

.language-toggle {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}

.language-toggle button {
  min-width: 42px;
  min-height: 28px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
  transition:
    background-color 220ms var(--ease),
    color 220ms var(--ease),
    transform 220ms var(--ease);
}

.language-toggle button:hover,
.language-toggle button:focus-visible,
.language-toggle button.is-active {
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  outline: none;
}

.language-toggle button.is-active {
  box-shadow: 0 10px 22px color-mix(in srgb, var(--accent) 10%, transparent);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 48px;
  height: 28px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}

.theme-toggle span {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  box-shadow: 0 0 16px var(--glow);
  transition: transform 260ms var(--ease);
}

:root[data-theme="dark"] .theme-toggle span {
  transform: translateX(20px);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero {
  width: min(var(--wide), calc(100% - 40px));
  min-height: calc(100dvh - 72px);
  margin: 0 auto;
  padding: 46px 0 78px;
}

.hero-kicker {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 28px;
  margin-bottom: clamp(34px, 5vw, 70px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 760;
  text-transform: uppercase;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(360px, 0.78fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 780;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 1060px;
  margin-bottom: 26px;
  font-family: var(--sans);
  font-size: clamp(2.75rem, 5.25vw, 5.25rem);
  font-weight: 880;
  line-height: 0.92;
  letter-spacing: 0;
  text-wrap: balance;
}

h1 span {
  display: block;
  margin-top: 16px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.42rem, 3vw, 2.75rem);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero-lede {
  max-width: 760px;
  margin-bottom: 28px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.9vw, 1.62rem);
  line-height: 1.62;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button,
.subscribe-form button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  overflow: hidden;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 760;
  transition:
    transform 220ms var(--ease),
    border-color 220ms var(--ease),
    background-color 220ms var(--ease);
}

.button::before,
.subscribe-form button::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 -80%;
  width: 58%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  transition: transform 620ms var(--ease);
}

.button:hover,
.button:focus-visible,
.subscribe-form button:hover,
.subscribe-form button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button:hover::before,
.button:focus-visible::before,
.subscribe-form button:hover::before,
.subscribe-form button:focus-visible::before {
  transform: translateX(320%) skewX(-22deg);
}

.button {
  padding: 0 20px;
  border: 1px solid var(--line-strong);
}

.button.primary,
.subscribe-form button {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-2) 65%, var(--accent)));
  color: white;
  box-shadow: 0 18px 46px var(--glow);
}

.button.ghost {
  background: var(--surface);
  color: var(--ink);
}

.book-showcase {
  position: relative;
  display: grid;
  gap: 16px;
  min-width: 0;
}

.book-showcase-copy {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 8px;
  max-width: 420px;
  padding: 18px 18px 0;
}

.book-showcase-copy span,
.book-showcase-copy p {
  color: var(--muted);
}

.book-showcase-copy span {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 780;
  text-transform: uppercase;
}

.book-showcase-copy h2 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(1.45rem, 2.5vw, 2.4rem);
  line-height: 1;
  letter-spacing: 0;
}

.book-showcase-copy p {
  max-width: 26rem;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.6;
}

.book-stage {
  --book-w: clamp(300px, 30vw, 410px);
  --book-h: calc(var(--book-w) * 1.38);
  --spine-w: 48px;
  position: relative;
  display: grid;
  place-items: center;
  min-height: calc(var(--book-h) + 72px);
  padding: 24px 18px 54px 62px;
  perspective: 1800px;
  cursor: grab;
  outline: none;
  touch-action: pan-y;
  user-select: none;
}

.book-stage:active {
  cursor: grabbing;
}

.book-stage:focus-visible .book-object {
  filter: drop-shadow(0 0 22px var(--glow));
}

.book-stage::before {
  content: "";
  position: absolute;
  inset: 12% 4% 10% 14%;
  border-radius: 36px;
  background: radial-gradient(circle at 58% 42%, var(--glow), transparent 60%);
  opacity: 0.38;
  filter: blur(20px);
  transition:
    opacity 360ms var(--ease),
    transform 520ms var(--ease);
}

.book-stage:hover::before,
.book-stage.is-hovered::before,
.book-stage.is-open::before {
  opacity: 0.72;
  transform: translateY(-8px) scale(1.04);
}

.book-shadow {
  position: absolute;
  left: 18%;
  right: 8%;
  bottom: 10%;
  height: 34px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0, 0, 0, 0.28), transparent 68%);
  filter: blur(9px);
  transform: rotate(-3deg);
  transition:
    opacity 520ms var(--ease),
    transform 720ms var(--ease);
}

.book-object {
  position: relative;
  width: var(--book-w);
  height: var(--book-h);
  transform: rotateX(7deg) rotateY(-20deg) rotateZ(-2deg);
  transform-style: preserve-3d;
  transition:
    transform 860ms var(--ease),
    filter 360ms var(--ease);
}

.book-stage:hover .book-object,
.book-stage.is-hovered .book-object,
.book-stage.is-open .book-object {
  transform: translateX(54px) translateY(-8px) rotateX(6deg) rotateY(-8deg) rotateZ(-1deg);
}

.book-stage:hover .book-shadow,
.book-stage.is-hovered .book-shadow,
.book-stage.is-open .book-shadow {
  opacity: 0.72;
  transform: translateX(12px) scaleX(1.08) rotate(-2deg);
}

.book-page-stack,
.book-page,
.book-cover,
.book-spine {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
}

.book-page-stack {
  z-index: 1;
  left: var(--spine-w);
  width: calc(100% - var(--spine-w));
  border: 1px solid color-mix(in srgb, var(--ink) 26%, transparent);
  border-radius: 2px 12px 12px 2px;
  background:
    repeating-linear-gradient(
      90deg,
      color-mix(in srgb, var(--ink) 12%, transparent) 0,
      color-mix(in srgb, var(--ink) 12%, transparent) 1px,
      transparent 1px,
      transparent 7px
    ),
    linear-gradient(90deg, #ded8c9, #fffdf7 12%, #fffefa);
  transform: translateZ(-18px);
}

.book-page {
  left: var(--spine-w);
  display: grid;
  align-content: start;
  width: calc(100% - var(--spine-w));
  min-width: 0;
  padding: 30px;
  border: 1px solid color-mix(in srgb, var(--ink) 30%, transparent);
  border-left: 0;
  border-radius: 0 12px 12px 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(17, 19, 26, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(17, 19, 26, 0.035) 1px, transparent 1px),
    #fffdf7;
  background-size: 22px 22px;
  color: #11131a;
  backface-visibility: hidden;
  box-shadow: inset 18px 0 30px rgba(17, 19, 26, 0.1);
  transform: translateZ(4px);
  transform-origin: left center;
  transition:
    transform 760ms var(--ease),
    filter 760ms var(--ease);
}

.book-title-page {
  z-index: 4;
  align-content: center;
  transform: translateZ(10px);
}

.book-toc-one {
  z-index: 3;
  transform: translateZ(7px);
}

.book-toc-two {
  z-index: 2;
  transform: translateZ(4px);
}

.book-stage[data-page="2"] .book-title-page,
.book-stage[data-page="3"] .book-title-page {
  filter: drop-shadow(18px 14px 20px rgba(17, 19, 26, 0.12));
  transform: translateZ(24px) rotateY(-166deg);
}

.book-stage[data-page="3"] .book-toc-one {
  filter: drop-shadow(18px 14px 20px rgba(17, 19, 26, 0.1));
  transform: translateZ(22px) rotateY(-166deg);
}

.book-title-page p,
.book-page-head p,
.book-page-head span {
  margin: 0;
  color: #b49747;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 840;
  text-transform: uppercase;
}

.book-title-page h3 {
  max-width: 8ch;
  margin: 16px 0 12px;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 0.92;
}

.book-title-page strong {
  color: #0a4b8f;
  font-size: 1.15rem;
}

.book-title-page span {
  margin-top: 22px;
  color: #505660;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
}

.book-page-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.book-toc-page h3 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 1.24rem;
  line-height: 1.05;
}

.book-toc-page ol {
  display: grid;
  gap: 8px;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.book-toc-page li {
  display: grid;
  grid-template-columns: 3.6ch minmax(0, 1fr) auto;
  gap: 8px;
  align-items: baseline;
  min-width: 0;
  color: #343943;
  font-size: 0.68rem;
  line-height: 1.3;
}

.book-toc-page li span,
.book-toc-page li em {
  color: #777d88;
  font-family: var(--mono);
  font-style: normal;
  font-weight: 760;
}

.book-toc-page li b {
  min-width: 0;
  border-bottom: 1px dotted rgba(17, 19, 26, 0.2);
  font-weight: 690;
}

.book-toc-two ol {
  gap: 9px;
}

.book-toc-two li {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 10px;
  padding-bottom: 7px;
  border-bottom: 1px dotted rgba(17, 19, 26, 0.18);
  line-height: 1.18;
}

.book-toc-two li span {
  color: #0a4b8f;
  font-size: 0.64rem;
  letter-spacing: 0;
}

.book-toc-two li b {
  grid-column: 1;
  border-bottom: 0;
  font-size: 0.62rem;
  line-height: 1.22;
}

.book-toc-two li em {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 0.58rem;
}

.book-cover {
  z-index: 5;
  left: var(--spine-w);
  width: calc(100% - var(--spine-w));
  transform: translateZ(24px) rotateY(0deg);
  transform-origin: left center;
  transition: transform 940ms var(--ease);
}

.book-stage[data-page="0"]:hover .book-cover,
.book-stage[data-page="0"].is-hovered .book-cover {
  transform: translateZ(26px) rotateY(-10deg);
}

.book-stage.is-open .book-cover,
.book-stage:not([data-page="0"]) .book-cover {
  transform: translateZ(24px) rotateY(-124deg);
}

.book-cover-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: 32px;
  border: 1px solid rgba(4, 20, 46, 0.9);
  border-radius: 2px 12px 12px 2px;
  overflow: hidden;
  backface-visibility: hidden;
}

.book-cover-front {
  color: #fffdf7;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.14), transparent 14%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 18px),
    #09285d;
  box-shadow:
    inset 18px 0 30px rgba(255, 255, 255, 0.08),
    inset -18px 0 28px rgba(0, 0, 0, 0.28),
    22px 28px 56px rgba(0, 0, 0, 0.22);
}

.book-cover-front::before,
.book-cover-front::after {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  pointer-events: none;
}

.book-cover-front::after {
  inset: 34px;
  border-color: rgba(199, 168, 87, 0.66);
}

.book-cover-front p,
.book-cover-front small {
  position: relative;
  z-index: 1;
  margin: 0;
  color: rgba(255, 253, 247, 0.78);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 820;
  text-transform: uppercase;
}

.book-cover-front h3 {
  position: relative;
  z-index: 1;
  max-width: 8ch;
  margin: 0 0 12px;
  color: #fffdf7;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4.8vw, 3.75rem);
  line-height: 0.9;
}

.book-cover-front span {
  position: relative;
  z-index: 1;
  color: rgba(255, 253, 247, 0.84);
  font-weight: 780;
}

.book-cover-back {
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(90deg, rgba(17, 19, 26, 0.12), transparent 18%),
    #e4dccb;
  color: #171511;
  transform: rotateY(180deg);
}

.book-cover-back p {
  max-width: 220px;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 760;
  line-height: 1.7;
}

.book-spine {
  z-index: 6;
  right: auto;
  display: grid;
  grid-template-rows: 1fr auto;
  justify-items: center;
  width: var(--spine-w);
  padding: 20px 0;
  border: 1px solid rgba(4, 20, 46, 0.9);
  border-radius: 12px 2px 2px 12px;
  color: #fffdf7;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.12), transparent 30%, rgba(0, 0, 0, 0.24)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 7px),
    #061b3f;
  box-shadow: inset -10px 0 18px rgba(0, 0, 0, 0.34);
  transform: translateZ(30px);
}

.book-spine span {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  color: rgba(255, 253, 247, 0.88);
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
}

.book-spine strong {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(199, 168, 87, 0.82);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.74rem;
}

.book-controls {
  position: relative;
  z-index: 8;
  display: grid;
  grid-template-columns: auto minmax(112px, auto) auto;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin-top: -34px;
}

.book-controls p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 760;
  text-align: center;
}

.book-nav,
.book-toggle-action {
  min-height: 38px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.05);
  transition:
    transform 220ms var(--ease),
    border-color 220ms var(--ease),
    opacity 220ms var(--ease);
}

.book-nav {
  display: grid;
  place-items: center;
  width: 38px;
  border-radius: 50%;
  font-weight: 820;
}

.book-toggle-action {
  padding: 0 16px;
  border-radius: 999px;
  font-weight: 760;
}

.book-nav:hover,
.book-nav:focus-visible,
.book-toggle-action:hover,
.book-toggle-action:focus-visible {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  outline: none;
}

.book-nav:disabled {
  cursor: default;
  opacity: 0.36;
  transform: none;
}

.manifesto-section,
.framework-section,
.principles-section,
.toc-section,
.notes-section,
.reading-section,
.portfolio-section,
.subscribe-section {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  padding: 110px 0 0;
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 34px;
}

.section-heading h2,
.subscribe-copy h2 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(1.84rem, 3vw, 3.12rem);
  font-weight: 860;
  line-height: 1.06;
  letter-spacing: 0;
  text-wrap: balance;
}

.section-heading p:not(.eyebrow),
.subscribe-copy p {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.78;
}

.manifesto-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: clamp(28px, 6vw, 84px);
  align-items: end;
}

.thesis-note {
  position: relative;
  padding: 22px 22px 24px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 9%, transparent), transparent 52%),
    var(--surface);
  box-shadow: 14px 14px 0 color-mix(in srgb, var(--ink) 7%, transparent);
}

.thesis-note span,
.ledger-strip span,
.ledger-strip strong {
  font-family: var(--mono);
  text-transform: uppercase;
}

.thesis-note span {
  display: block;
  margin-bottom: 52px;
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 820;
}

.thesis-note p {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.45;
}

.ledger-strip {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin-top: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface-strong);
}

.ledger-strip span,
.ledger-strip strong {
  position: relative;
  display: grid;
  min-height: 74px;
  place-items: center;
  padding: 10px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 820;
  text-align: center;
}

.ledger-strip span::after {
  content: "->";
  position: absolute;
  right: -11px;
  top: 50%;
  z-index: 1;
  width: 22px;
  transform: translateY(-50%);
  color: var(--gold);
  text-align: center;
}

.ledger-strip strong {
  border-right: 0;
  color: var(--surface-strong);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.framework-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.framework-levels {
  display: grid;
  gap: 12px;
}

.level-card {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  min-height: 174px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  transition:
    transform 240ms var(--ease),
    border-color 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.level-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 48%, var(--line));
  box-shadow: 0 18px 50px rgba(17, 19, 26, 0.1);
}

.level-card > span {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 860;
}

.level-card p:first-child,
.map-header span,
.flow-node span,
.map-box span,
.post-meta,
.insight-tile span {
  font-family: var(--mono);
  text-transform: uppercase;
}

.level-card p:first-child {
  margin: 0 0 22px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 820;
}

.level-card h3 {
  margin: 0 0 10px;
  font-size: clamp(1.12rem, 1.55vw, 1.55rem);
  line-height: 1.08;
}

.level-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.62;
}

.system-map {
  position: relative;
  display: grid;
  align-content: space-between;
  min-height: 546px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--line));
  border-radius: 10px;
  overflow: hidden;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent-2) 12%, transparent) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in srgb, var(--accent-2) 12%, transparent) 1px, transparent 1px),
    radial-gradient(circle at 72% 28%, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 24rem),
    #07140f;
  background-size: 34px 34px, 34px 34px, auto, auto;
  color: #f6f3e9;
  box-shadow: 0 28px 90px color-mix(in srgb, var(--accent) 16%, transparent);
}

.system-map::before {
  content: "";
  position: absolute;
  inset: 20px;
  border: 1px solid rgba(246, 243, 233, 0.18);
  pointer-events: none;
}

.map-header,
.flow-line,
.map-matrix {
  position: relative;
  z-index: 1;
}

.map-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(246, 243, 233, 0.18);
}

.map-header span {
  color: #52dc96;
  font-size: 0.72rem;
  font-weight: 820;
}

.map-header strong {
  max-width: 12ch;
  color: #fffdf7;
  font-size: clamp(1.42rem, 2.4vw, 2.45rem);
  line-height: 1.02;
  text-align: right;
}

.flow-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 30px 0;
}

.flow-line::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 8%;
  right: 8%;
  height: 3px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, #55d68f, #d9c56a, #5aa9ff);
  opacity: 0.72;
  box-shadow: 0 0 18px rgba(82, 220, 150, 0.34);
}

.flow-node {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 6px;
  min-height: 104px;
  align-content: center;
  padding: 14px;
  border: 1px solid rgba(246, 243, 233, 0.24);
  border-radius: 8px;
  background: rgba(7, 20, 15, 0.82);
  box-shadow: inset 0 0 0 1px rgba(82, 220, 150, 0.08);
}

.flow-node span,
.map-box span {
  color: rgba(246, 243, 233, 0.56);
  font-size: 0.68rem;
  font-weight: 780;
}

.flow-node strong {
  color: #fffdf7;
  font-size: 1.06rem;
}

.is-income {
  border-color: rgba(90, 169, 255, 0.5);
}

.is-allocation,
.is-assets {
  border-color: rgba(82, 220, 150, 0.5);
}

.is-optionality {
  border-color: rgba(217, 197, 106, 0.62);
}

.map-matrix {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(82px, auto));
  gap: 10px;
}

.map-box {
  display: grid;
  gap: 8px;
  align-content: center;
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(246, 243, 233, 0.2);
  border-radius: 8px;
  background: rgba(246, 243, 233, 0.06);
}

.map-box strong {
  color: #fffdf7;
  font-size: 0.98rem;
  line-height: 1.25;
}

.is-friction {
  grid-column: 1 / span 2;
  grid-row: 1 / span 2;
  border-color: rgba(240, 138, 97, 0.62);
  background: linear-gradient(135deg, rgba(240, 138, 97, 0.2), rgba(246, 243, 233, 0.04));
}

.is-core {
  grid-column: 3 / span 2;
  grid-row: 1;
}

.is-growth {
  grid-column: 5 / span 2;
  grid-row: 1;
}

.is-distribution {
  grid-column: 3 / span 3;
  grid-row: 2;
  border-color: rgba(90, 169, 255, 0.52);
}

.is-meta {
  grid-column: 2 / span 5;
  grid-row: 3;
  border-color: rgba(217, 197, 106, 0.58);
  background: linear-gradient(90deg, rgba(217, 197, 106, 0.18), rgba(82, 220, 150, 0.1));
}

.principle-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.principle-card {
  position: relative;
  display: flex;
  min-height: 310px;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  color: var(--ink);
  background: var(--surface-strong);
  transition:
    transform 260ms var(--ease),
    box-shadow 260ms var(--ease),
    border-color 260ms var(--ease);
}

.principle-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(17, 19, 26, 0.055) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.6;
  pointer-events: none;
}

.principle-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--ink) 34%, var(--line));
  box-shadow: 0 18px 60px rgba(17, 19, 26, 0.12);
}

.principle-card span {
  position: relative;
  align-self: end;
  color: color-mix(in srgb, currentColor 44%, transparent);
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 760;
}

.principle-card h3,
.principle-card p {
  position: relative;
  margin: 0;
}

.principle-card h3 {
  max-width: 9ch;
  font-size: clamp(1.28rem, 2.05vw, 2.1rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.principle-card p {
  max-width: 22rem;
  color: color-mix(in srgb, currentColor 78%, transparent);
  font-size: 0.96rem;
  line-height: 1.55;
}

.principle-card.is-blue,
.principle-card.is-green,
.principle-card.is-ink,
.principle-card.is-red {
  color: #fffdf7;
}

.principle-card.is-blue {
  background: #124a91;
}

.principle-card.is-paper {
  background: #f8f2df;
}

.principle-card.is-green {
  background: #2f735f;
}

.principle-card.is-gold {
  background: #ecd66d;
}

.principle-card.is-ink {
  background: #16191f;
}

.principle-card.is-red {
  background: #b85f3b;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--line);
}

.portfolio-panel {
  display: grid;
  align-content: space-between;
  min-height: 330px;
  padding: 22px;
  background: var(--surface);
}

.portfolio-panel + .portfolio-panel {
  border-left: 1px solid var(--line);
}

.portfolio-panel span,
.allocation-ledger span,
.allocation-ledger strong {
  font-family: var(--mono);
  text-transform: uppercase;
}

.portfolio-panel span {
  color: var(--gold);
  font-size: 0.76rem;
  font-weight: 820;
}

.portfolio-panel h3 {
  max-width: 9ch;
  margin: 70px 0 18px;
  font-size: clamp(1.25rem, 1.9vw, 2rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.portfolio-panel p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.65;
}

.allocation-ledger {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--line);
}

.allocation-ledger div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  min-height: 66px;
  padding: 14px 16px;
  background: var(--surface-strong);
}

.allocation-ledger span {
  color: var(--muted);
  font-size: 0.72rem;
}

.allocation-ledger strong {
  color: var(--accent);
  font-size: 0.82rem;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.insight-tile {
  display: grid;
  gap: 12px;
  min-height: 184px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 58%),
    var(--surface);
}

.insight-tile span {
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 820;
}

.insight-tile strong {
  align-self: end;
  font-size: clamp(1.3rem, 2vw, 2.1rem);
  line-height: 1;
}

.insight-tile p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.62;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.post-card {
  display: grid;
  gap: 18px;
  min-height: 328px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  transition:
    transform 240ms var(--ease),
    border-color 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 44%, var(--line));
  box-shadow: 0 18px 58px rgba(17, 19, 26, 0.1);
}

.post-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 780;
}

.post-card h3 {
  margin: 28px 0 0;
  font-size: clamp(1.24rem, 1.9vw, 1.92rem);
  line-height: 1.06;
}

.post-card p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.66;
}

.post-card a {
  align-self: end;
  justify-self: start;
  color: var(--accent);
  font-weight: 780;
  text-decoration: none;
}

.post-card a:hover,
.post-card a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.manifesto-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  list-style: none;
  background: var(--line);
}

.manifesto-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: clamp(22px, 3.4vw, 38px);
  background: var(--surface);
}

.manifesto-list span {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.92rem;
  font-weight: 820;
}

.manifesto-list p {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.18rem, 2.05vw, 1.95rem);
  line-height: 1.34;
  text-wrap: pretty;
}

.toc-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 28px;
}

.journey-rail {
  position: sticky;
  top: 98px;
  display: grid;
  gap: 12px;
  align-self: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.journey-rail span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.toc-accordion {
  display: grid;
  gap: 12px;
}

.toc-item {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  overflow: hidden;
  transition:
    border-color 220ms var(--ease),
    background-color 220ms var(--ease),
    transform 220ms var(--ease);
}

.toc-item:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.toc-trigger {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  width: 100%;
  padding: 24px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
}

.toc-trigger span,
.toc-trigger em {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-style: normal;
  font-weight: 760;
  text-transform: uppercase;
}

.toc-trigger strong {
  font-size: clamp(1.05rem, 1.9vw, 1.78rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.toc-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 420ms var(--ease);
}

.toc-item.is-open .toc-panel {
  grid-template-rows: 1fr;
}

.toc-panel ol {
  min-height: 0;
  margin: 0;
  padding: 0 24px 0;
  overflow: hidden;
  list-style: none;
  transition: padding-bottom 420ms var(--ease);
}

.toc-item.is-open .toc-panel ol {
  padding-bottom: 24px;
}

.toc-panel li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.toc-panel span,
.toc-panel em {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-style: normal;
}

.toc-panel b {
  font-weight: 640;
}

.reader-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.reader-toc {
  position: sticky;
  top: 98px;
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.reader-toc span {
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.reader-toc a {
  padding: 9px 10px;
  border-radius: 12px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}

.reader-toc a.is-active,
.reader-toc a:hover {
  color: var(--ink);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.reader-card {
  padding: clamp(24px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--reader-bg);
  color: var(--reader-ink);
  font-family: var(--serif);
  font-size: var(--reader-size, 1.12rem);
  line-height: 1.92;
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.08);
}

.reader-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
  font-family: var(--sans);
}

.reader-tools button {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid color-mix(in srgb, var(--reader-ink) 18%, transparent);
  border-radius: 999px;
  background: transparent;
  color: var(--reader-ink);
  font-size: 0.82rem;
}

.chapter-label {
  color: color-mix(in srgb, var(--reader-ink) 50%, transparent);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.reader-card h3 {
  max-width: 720px;
  margin: 0 0 24px;
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3vw, 3.05rem);
  line-height: 1.08;
}

.reader-card p {
  max-width: 760px;
}

.reader-card blockquote {
  max-width: 760px;
  margin: 34px 0;
  padding: 24px 0 24px 28px;
  border-left: 3px solid var(--gold);
  color: color-mix(in srgb, var(--reader-ink) 76%, transparent);
  font-family: var(--sans);
  font-size: 1.05em;
  font-weight: 640;
  line-height: 1.6;
}

.reader-card[data-tone="cool"] {
  --reader-bg: #f4f8fb;
}

:root[data-theme="dark"] .reader-card[data-tone="cool"] {
  --reader-bg: #0d1622;
}

.subscribe-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(320px, 1fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: start;
  padding-bottom: 96px;
}

.subscribe-form {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
}

.subscribe-form label {
  display: block;
  margin-bottom: 10px;
  font-weight: 760;
}

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

.subscribe-form input {
  width: 100%;
  min-height: 52px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
  color: var(--ink);
  outline: none;
}

.subscribe-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

.subscribe-form button {
  min-width: 92px;
  border: 0;
  padding: 0 20px;
}

.form-help {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.form-help[data-state="error"] {
  color: #d25c4b;
}

.form-help[data-state="success"] {
  color: var(--accent-2);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  padding: 26px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 700ms var(--ease),
    transform 700ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .manifesto-grid,
  .framework-grid,
  .toc-layout,
  .reader-shell,
  .subscribe-section {
    grid-template-columns: 1fr;
  }

  .principle-wall,
  .portfolio-grid,
  .allocation-ledger,
  .insight-grid,
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .journey-rail,
  .reader-toc {
    position: static;
  }

  .journey-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
    .site-header {
    grid-template-columns: auto 1fr auto;
    gap: 8px;
    min-height: 66px;
    padding: 8px 14px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-links {
    justify-self: stretch;
    min-width: 0;
    gap: 2px;
    overflow-x: auto;
  }

  .nav-links a {
    padding-inline: 7px;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .nav-links a[href="#toc"],
  .nav-links a[href="#portfolio"],
  .nav-links a[href="#reading"] {
    display: none;
  }

  .nav-links a[href="#principles"] {
    display: none;
  }

  .header-actions {
    gap: 6px;
  }

  .language-toggle button {
    min-width: 34px;
    min-height: 26px;
    font-size: 0.72rem;
  }

  .theme-toggle {
    width: 42px;
    height: 26px;
  }

  .theme-toggle span {
    width: 18px;
    height: 18px;
  }

  :root[data-theme="dark"] .theme-toggle span {
    transform: translateX(16px);
  }

  .hero,
  .manifesto-section,
  .framework-section,
  .principles-section,
  .toc-section,
  .notes-section,
  .reading-section,
  .portfolio-section,
  .subscribe-section,
  .site-footer {
    width: min(100% - 28px, var(--container));
  }

  .hero {
    min-height: 0;
    padding: 32px 0 60px;
  }

  .hero-kicker {
    margin-bottom: 46px;
    font-size: 0.64rem;
  }

  h1 {
    font-size: clamp(2.38rem, 10.6vw, 3.2rem);
  }

  h1 span {
    font-size: 1.18rem;
  }

  .hero-lede {
    font-size: 1.06rem;
  }

  .hero-actions,
  .input-row {
    display: flex;
    flex-direction: column;
  }

  .button,
  .subscribe-form button,
  .subscribe-form input {
    width: 100%;
  }

  .book-showcase {
    gap: 10px;
  }

  .book-showcase-copy {
    padding: 6px 4px 0;
  }

  .book-showcase-copy h2 {
    max-width: 15ch;
    font-size: 1.34rem;
    letter-spacing: 0;
  }

  .book-showcase-copy p {
    font-size: 0.88rem;
  }

  .book-stage {
    --book-w: min(82vw, 320px);
    --spine-w: 38px;
    min-height: calc(var(--book-h) + 82px);
    padding: 16px 8px 52px 28px;
  }

  .book-stage:hover .book-object,
  .book-stage.is-hovered .book-object,
  .book-stage.is-open .book-object {
    transform: rotateX(5deg) rotateY(-8deg) rotateZ(-1deg);
  }

  .book-stage.is-open .book-cover,
  .book-stage:not([data-page="0"]) .book-cover {
    transform: translateZ(24px) rotateY(-86deg);
  }

  .book-cover-face,
  .book-page {
    padding: 16px;
  }

  .book-cover-front h3,
  .book-title-page h3 {
    font-size: 1.55rem;
  }

  .book-title-page strong {
    font-size: 0.95rem;
  }

  .book-title-page span {
    font-size: 0.62rem;
  }

  .book-page-head {
    margin-bottom: 8px;
  }

  .book-title-page p,
  .book-page-head p,
  .book-page-head span {
    font-size: 0.54rem;
  }

  .book-toc-page h3 {
    margin-bottom: 9px;
    font-size: 1rem;
  }

  .book-toc-page ol {
    gap: 5px;
  }

  .book-toc-page li {
    grid-template-columns: 3ch minmax(0, 1fr) auto;
    gap: 5px;
    font-size: 0.52rem;
    line-height: 1.18;
  }

  .book-toc-two ol {
    gap: 5px;
  }

  .book-toc-two li {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1px 6px;
    padding-bottom: 4px;
  }

  .book-toc-two li span {
    font-size: 0.5rem;
  }

  .book-toc-two li b {
    font-size: 0.5rem;
    line-height: 1.16;
  }

  .book-toc-two li em {
    grid-column: 2;
    grid-row: 1 / span 2;
    font-size: 0.46rem;
  }

  .book-spine {
    padding: 14px 0;
  }

  .book-spine span {
    font-size: 0.78rem;
  }

  .book-spine strong {
    width: 24px;
    height: 24px;
    font-size: 0.62rem;
  }

  .book-controls {
    margin-top: -42px;
  }

  .manifesto-section,
  .framework-section,
  .principles-section,
  .toc-section,
  .notes-section,
  .reading-section,
  .portfolio-section,
  .subscribe-section {
    padding-top: 70px;
  }

  .manifesto-grid,
  .framework-grid,
  .principle-wall,
  .portfolio-grid,
  .allocation-ledger,
  .insight-grid,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .level-card {
    grid-template-columns: 42px minmax(0, 1fr);
    min-height: 0;
    padding: 16px;
  }

  .level-card > span {
    width: 36px;
    height: 36px;
    font-size: 0.86rem;
  }

  .level-card p:first-child {
    margin-bottom: 14px;
  }

  .system-map {
    min-height: 0;
    padding: 18px;
  }

  .system-map::before {
    inset: 12px;
  }

  .map-header {
    align-items: start;
    flex-direction: column;
  }

  .map-header strong {
    max-width: none;
    text-align: left;
  }

  .flow-line {
    grid-template-columns: 1fr;
    margin: 22px 0;
  }

  .flow-line::before {
    top: 8%;
    bottom: 8%;
    left: 24px;
    right: auto;
    width: 3px;
    height: auto;
    transform: none;
    background: linear-gradient(180deg, #55d68f, #d9c56a, #5aa9ff);
  }

  .flow-node {
    min-height: 82px;
    padding-left: 52px;
  }

  .map-matrix {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .map-box,
  .is-friction,
  .is-core,
  .is-growth,
  .is-distribution,
  .is-meta {
    grid-column: auto;
    grid-row: auto;
  }

  .insight-tile,
  .post-card {
    min-height: 0;
  }

  .thesis-note {
    box-shadow: 8px 8px 0 color-mix(in srgb, var(--ink) 7%, transparent);
  }

  .thesis-note span {
    margin-bottom: 30px;
  }

  .ledger-strip {
    grid-template-columns: 1fr;
  }

  .ledger-strip span,
  .ledger-strip strong {
    min-height: 52px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .ledger-strip span::after {
    content: "";
    right: auto;
    top: auto;
    bottom: -8px;
    left: 50%;
    width: 12px;
    height: 12px;
    transform: translateX(-50%) rotate(45deg);
    border-right: 1px solid var(--gold);
    border-bottom: 1px solid var(--gold);
    background: var(--surface-strong);
  }

  .principle-card {
    min-height: 260px;
  }

  .principle-card h3,
  .portfolio-panel h3 {
    font-size: 1.42rem;
  }

  .portfolio-panel {
    min-height: 250px;
  }

  .portfolio-panel + .portfolio-panel {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .manifesto-list li {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .toc-trigger {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .toc-trigger em {
    grid-column: 2;
  }

  .toc-panel li {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .toc-panel em {
    grid-column: 2;
  }

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

  .reader-card {
    font-size: var(--reader-size, 1rem);
  }

  .reader-tools {
    position: sticky;
    top: 76px;
    z-index: 2;
    padding: 8px 0;
    background: var(--reader-bg);
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}