/* =====================================================================
   Eliyah Oren — 公開思想宇宙索引層
   Design system: editorial, quiet, systematic, civilizational scale.
   ===================================================================== */

:root {
  color-scheme: light dark;

  /* Type families */
  --font-serif: "Fraunces", "Noto Serif TC", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", "Noto Sans TC", "Microsoft JhengHei", system-ui, -apple-system,
    "Segoe UI", Roboto, Arial, sans-serif;

  /* Fluid type scale (clamp from mobile → desktop) */
  --step--1: clamp(0.82rem, 0.78rem + 0.18vw, 0.92rem);
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --step-2: clamp(1.55rem, 1.35rem + 1vw, 2.1rem);
  --step-3: clamp(2rem, 1.6rem + 2vw, 3.05rem);
  --step-4: clamp(2.6rem, 1.9rem + 3.6vw, 5.4rem);

  /* Spacing scale */
  --space-2xs: 0.375rem;
  --space-xs: 0.625rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Layout */
  --container: 1200px;
  --container-narrow: 880px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --gutter: clamp(1.25rem, 5vw, 2.75rem);

  /* Hero-derived palette — orbital navy, ice blue, and civilizational gold */
  --ink: #eef6ff;
  --ink-soft: #c7d6e6;
  --muted: #92a8bc;
  --faint: #6c879d;
  --paper: #020914;
  --paper-2: #07192b;
  --surface: #0c1e31;
  --surface-2: #10283e;
  --line: rgba(113, 190, 240, 0.22);
  --line-strong: rgba(231, 187, 130, 0.48);
  --accent: #56c6f5;
  --accent-strong: #8fe2ff;
  --accent-2: #e6b878;
  --halo: rgba(80, 190, 245, 0.18);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 18px 44px -28px rgba(0, 0, 0, 0.8);
  --shadow-lg: 0 44px 90px -48px rgba(0, 0, 0, 0.95);

  --focus-ring: 0 0 0 3px var(--paper), 0 0 0 5px var(--accent);

  font-family: var(--font-sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef6ff;
    --ink-soft: #c7d6e6;
    --muted: #92a8bc;
    --faint: #6c879d;
    --paper: #020914;
    --paper-2: #07192b;
    --surface: #0c1e31;
    --surface-2: #10283e;
    --line: rgba(113, 190, 240, 0.22);
    --line-strong: rgba(231, 187, 130, 0.48);
    --accent: #56c6f5;
    --accent-strong: #8fe2ff;
    --accent-2: #e6b878;
    --halo: rgba(80, 190, 245, 0.18);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 20px 44px -28px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 44px 90px -48px rgba(0, 0, 0, 0.8);
    --focus-ring: 0 0 0 3px var(--paper), 0 0 0 5px var(--accent);
  }
}

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  background:
    radial-gradient(900px 540px at 80% 0%, rgba(66, 175, 255, 0.14), transparent 62%),
    radial-gradient(720px 520px at 8% 14%, rgba(230, 184, 120, 0.1), transparent 64%),
    linear-gradient(180deg, var(--paper), var(--paper-2) 44%, #020914);
  background-attachment: fixed;
  color: var(--ink);
  font-size: var(--step-0);
  line-height: 1.65;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

p {
  text-wrap: pretty;
}

::selection {
  background: var(--accent);
  color: var(--surface);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 460;
  line-height: 1.08;
  letter-spacing: -0.018em;
  text-wrap: balance;
  font-optical-sizing: auto;
}

/* ---------------------------------------------------------------- Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-sm) var(--gutter);
  background: color-mix(in srgb, var(--paper) 74%, transparent);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid transparent;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.brand {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  font-weight: 520;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--accent);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(0.9rem, 2.4vw, 1.6rem);
  color: var(--muted);
  font-size: var(--step--1);
  font-weight: 500;
}

.site-header nav a {
  position: relative;
  padding-block: 0.35rem;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-header nav a:hover {
  color: var(--ink);
}

.site-header nav a:hover::after {
  transform: scaleX(1);
}

/* ------------------------------------------------------------------ Hero */

.hero {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 0 clamp(2.5rem, 6vw, 4.5rem);
}

.hero-visual {
  position: relative;
  width: 100%;
  min-height: clamp(520px, 68vw, 860px);
  max-width: none;
  margin: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background-image:
    linear-gradient(90deg, rgba(2, 9, 20, 0.1), rgba(2, 9, 20, 0.18)),
    url("/hero/eliyah-oren-civilization.png"),
    url("/hero/eliyah-oren-civilization.svg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  isolation: isolate;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(transparent, rgba(2, 9, 20, 0.72));
  pointer-events: none;
}

.hero-visual-image {
  display: none;
}

.hero-visual-copy {
  position: absolute;
  left: clamp(1.5rem, 7vw, 6rem);
  bottom: clamp(1.5rem, 5vw, 4rem);
  z-index: 1;
  max-width: 42rem;
  padding: clamp(1rem, 2.2vw, 1.6rem);
  border-left: 1px solid rgba(231, 187, 130, 0.55);
  background: linear-gradient(90deg, rgba(2, 9, 20, 0.58), rgba(2, 9, 20, 0));
}

.hero-visual-copy h1 {
  max-width: 10ch;
  margin-top: var(--space-xs);
  color: #f6f7f1;
  font-size: clamp(3.2rem, 8vw, 7.5rem);
  line-height: 0.92;
  text-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
}

.hero-visual-copy p:last-child {
  margin-top: var(--space-sm);
  color: var(--accent-2);
  font-size: clamp(1.15rem, 2.7vw, 2.4rem);
  line-height: 1.2;
}

/* --------------------------------------------------- Civilization redesign */

.civilization-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: stretch;
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) var(--gutter) clamp(2.75rem, 6vw, 4.5rem);
  overflow: hidden;
  isolation: isolate;
  background: transparent;
}

.civilization-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(2, 9, 20, 0.9), rgba(2, 9, 20, 0.28) 56%, rgba(2, 9, 20, 0.72)),
    radial-gradient(720px 320px at 62% 68%, rgba(230, 184, 120, 0.18), transparent 64%);
}

.civilization-hero__media {
  order: 2;
  align-self: center;
  margin: 0;
}

.civilization-hero__media img {
  width: 100%;
  max-height: min(76vh, 760px);
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  box-shadow: var(--shadow-lg);
}

.civilization-hero__copy {
  order: 1;
  align-self: center;
  width: 100%;
  max-width: 42rem;
  padding: clamp(1rem, 2vw, 1.5rem) 0;
}

.civilization-hero h1 {
  max-width: 11ch;
  margin-top: var(--space-sm);
  color: #fff9ea;
  font-size: var(--step-4);
  letter-spacing: 0;
}

.civilization-hero .lead {
  max-width: 68ch;
  color: #d6e6ee;
}

.mission-section,
.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.mission-quote,
.mission-line {
  max-width: 68ch;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-2);
  line-height: 1.28;
}

.mission-line {
  margin-top: var(--space-md);
  color: var(--accent-2);
}

.section-kicker {
  max-width: 44rem;
  color: var(--muted);
}

.framework-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.25rem);
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.25rem);
}

.framework-card {
  min-height: 18rem;
}

.note-card {
  min-height: 14rem;
}

.archive-card {
  min-height: 15rem;
}

.civilization-bridge {
  border-top: 1px solid var(--line-strong);
}

.bridge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.25rem);
}

.bridge-card {
  min-height: 15rem;
}

.signal-panel,
.lab-orbit {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--line);
}

.signal-panel span,
.lab-orbit span {
  min-height: 5rem;
  display: grid;
  place-items: center;
  padding: var(--space-sm);
  background:
    linear-gradient(135deg, rgba(86, 198, 245, 0.08), rgba(230, 184, 120, 0.06)),
    var(--surface);
  color: var(--ink-soft);
  font-weight: 700;
  text-align: center;
}

.lab-orbit {
  border-radius: 999px;
}

.lab-orbit span {
  min-height: 7.5rem;
}

.final-cta {
  display: grid;
  gap: var(--space-md);
  justify-items: start;
  border-top: 1px solid var(--line);
}

.final-cta h2 {
  max-width: 14ch;
  color: #fff9ea;
  font-size: var(--step-3);
}

.framework-list {
  display: grid;
  gap: var(--space-md);
}

.framework-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 0.95fr);
  gap: clamp(1.25rem, 4vw, 2.5rem);
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.framework-detail h2 {
  font-size: var(--step-2);
}

.about-origin-visual {
  padding-top: 0;
}

.lead {
  max-width: 62ch;
  margin-top: var(--space-md);
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.55;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--accent);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1.5px;
  background: currentColor;
  opacity: 0.6;
}

/* --------------------------------------------------------------- Section */

.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(2.75rem, 6vw, 5rem) var(--gutter);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm) var(--space-lg);
  align-items: end;
  margin-bottom: var(--space-lg);
}

.section h2 {
  font-size: var(--step-3);
}

.section > .lead {
  margin-top: 0;
}

/* ------------------------------------------------------- Grids and cards */

.universe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.25rem);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.5rem);
}

.universe-card,
.book-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1),
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.universe-card:hover,
.book-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.universe-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-height: 250px;
  padding: clamp(1.25rem, 2.2vw, 1.75rem);
  overflow: hidden;
}

.universe-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.universe-card:hover::before {
  opacity: 1;
}

.universe-card span,
.book-universe,
.muted {
  color: var(--muted);
  font-size: var(--step--1);
  letter-spacing: 0.02em;
}

.universe-card span {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.universe-card h3,
.book-card h3 {
  margin: var(--space-2xs) 0;
  font-size: var(--step-1);
  line-height: 1.22;
}

.universe-card p {
  color: var(--ink-soft);
  font-size: var(--step-0);
}

.book-universe {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
}

.book-card a {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100%;
}

.book-card img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius) - 1px) calc(var(--radius) - 1px) 0 0;
  background: var(--surface-2);
}

.book-card > a > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding: clamp(0.9rem, 1.5vw, 1.15rem);
}

.book-card h3 {
  font-size: var(--step-0);
  font-weight: 560;
}

.book-card p:last-child {
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.45;
}

.content-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: var(--space-xs) 0;
}

.content-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-2) 76%, transparent);
  color: var(--accent-2);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.2;
}

.content-tags.compact {
  margin: 0.1rem 0 0.25rem;
}

.content-tags.compact span {
  min-height: 1.35rem;
  padding: 0.16rem 0.42rem;
  font-size: 0.62rem;
}

.classification-note {
  max-width: 68ch;
  margin: var(--space-xs) 0 var(--space-md);
  padding: var(--space-sm);
  border-left: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--surface) 76%, transparent);
  color: var(--ink-soft);
  font-size: var(--step--1);
}

/* ------------------------------------------------------------ Page hero */

.page-hero {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) var(--gutter) var(--space-lg);
}

.page-hero h1 {
  margin-top: var(--space-sm);
  font-size: var(--step-3);
}

.page-hero .lead {
  font-size: var(--step-1);
}

.page-hero > p:last-child:not(.lead):not(.eyebrow) {
  margin-top: var(--space-sm);
  color: var(--ink-soft);
  font-size: var(--step-1);
  font-style: italic;
}

/* ----------------------------------------------------------- Book detail */

.book-detail {
  display: grid;
  grid-template-columns: minmax(0, 320px) 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter);
  align-items: start;
}

.book-detail img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 96px;
}

.book-detail h1 {
  font-size: var(--step-3);
}

/* --------------------------------------------------------------- Buttons */

.button,
.buy-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0 1.4rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.button:hover,
.buy-links a:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.section > .button {
  margin-top: var(--space-md);
}

.buy-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.button.secondary:hover {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--ink);
}

/* ------------------------------------------------------------- Services */

.service-hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(4rem, 9vw, 7rem) var(--gutter) clamp(2.75rem, 6vw, 4.5rem);
}

.service-hero h1 {
  max-width: 11ch;
  margin-top: var(--space-sm);
  font-size: var(--step-4);
}

.service-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.service-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.service-facts div {
  padding: clamp(1rem, 2vw, 1.4rem);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.service-facts dt {
  color: var(--muted);
  font-size: var(--step--1);
}

.service-facts dd {
  margin-top: var(--space-2xs);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-1);
}

.service-band {
  border-block: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(86, 198, 245, 0.06), rgba(230, 184, 120, 0.05));
}

.operating-system-intro > p {
  max-width: 76ch;
  line-height: 1.95;
}

.operating-system-intro > .lead {
  margin-bottom: var(--space-sm);
  line-height: 1.9;
}

.operating-system-intro > .lead + p {
  margin-top: var(--space-sm);
  margin-bottom: var(--space-lg);
  color: var(--ink-soft);
}

.lab-system-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.lab-system-copy {
  max-width: 68ch;
}

.lab-system-copy .lead {
  line-height: 1.85;
}

.lab-system-copy > p:not(.eyebrow):not(.lead) {
  color: var(--ink-soft);
  line-height: 1.9;
}

.system-layers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: var(--space-md) 0;
}

.system-layers span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.28rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--accent) 46%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--ink);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.lab-system-visual {
  margin: 0;
}

.lab-system-visual a {
  display: block;
  cursor: zoom-in;
  text-decoration: none;
}

.lab-system-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.lab-system-visual a:hover img {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.origin-film-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(360px, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3.25rem);
  align-items: center;
}

.origin-film-copy {
  max-width: 64ch;
}

.origin-film-copy .lead {
  line-height: 1.85;
}

.origin-film-copy > p:not(.eyebrow):not(.lead) {
  color: var(--ink-soft);
  line-height: 1.9;
}

.origin-film {
  margin: 0;
}

.video-embed {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(86, 198, 245, 0.12), rgba(230, 184, 120, 0.08)),
    var(--surface);
  box-shadow: var(--shadow-md);
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.origin-film figcaption {
  margin-top: var(--space-xs);
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.55;
}

.service-grid,
.service-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.25rem);
}

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

.quick-stats > div {
  padding: clamp(1rem, 2vw, 1.35rem);
  background: var(--surface);
}

.quick-stats span,
.status-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--accent-2);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.quick-stats strong {
  display: block;
  margin-top: var(--space-2xs);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 2.1rem + 1.45vw, 2.9rem);
  line-height: 0.96;
}

.quick-stats strong.compact-stat {
  max-width: 15rem;
  font-size: clamp(1.25rem, 1.04rem + 0.92vw, 1.85rem);
  line-height: 1.18;
}

.quick-stats strong .currency-prefix,
.quick-stats strong .stat-number,
.quick-stats strong .stat-label {
  display: inline;
  width: auto;
  color: inherit;
  font-family: inherit;
  font-weight: inherit;
  letter-spacing: 0;
  text-transform: none;
}

.quick-stats strong .currency-prefix {
  font-size: var(--step-1);
  line-height: 1;
  vertical-align: baseline;
}

.quick-stats strong .stat-number {
  font-size: clamp(2.4rem, 2.1rem + 1.45vw, 2.9rem);
  line-height: 0.96;
}

.quick-stats strong .stat-label {
  display: block;
  margin-top: 0.45rem;
  font-size: clamp(1.25rem, 1.04rem + 0.92vw, 1.85rem);
  line-height: 1.16;
}

.ecosystem-value-card p {
  margin-top: 0.95rem;
}

.thought-map-card {
  background:
    radial-gradient(circle at 20% 18%, rgba(86, 198, 245, 0.18), transparent 32%),
    radial-gradient(circle at 78% 72%, rgba(230, 184, 120, 0.15), transparent 34%),
    var(--surface);
}

.quick-stats .thought-map-card strong {
  max-width: 16rem;
  font-size: var(--step-1);
  line-height: 1.15;
}

.thought-map {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: var(--space-sm);
}

.thought-map b {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.22rem 0.58rem;
  border: 1px solid color-mix(in srgb, var(--accent) 44%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper-2) 72%, transparent);
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.service-card,
.service-columns > div,
.service-pricing {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.service-card {
  padding: clamp(1.1rem, 2vw, 1.5rem);
  min-width: 0;
}

.service-card span {
  color: var(--accent-2);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.12em;
}

.service-card h3,
.service-list h3,
.service-columns h3,
.service-pricing h3 {
  margin-top: var(--space-xs);
  font-size: var(--step-1);
}

.service-card p,
.service-list p,
.service-columns li,
.service-pricing p,
.service-pricing li,
.service-faq p {
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.service-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.service-list > div {
  display: grid;
  grid-template-columns: minmax(160px, 0.32fr) minmax(0, 1fr);
  gap: var(--space-md);
  padding: clamp(1rem, 2vw, 1.4rem);
  background: var(--surface);
}

.service-timeline ol {
  display: grid;
  gap: var(--space-sm);
  padding: 0;
  list-style: none;
}

.service-timeline li {
  padding: clamp(1rem, 2vw, 1.4rem);
  border-left: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
}

.service-timeline strong {
  display: block;
  margin-bottom: var(--space-2xs);
  color: var(--ink);
}

.timeline {
  display: grid;
  gap: var(--space-sm);
}

.timeline > div {
  padding: clamp(1rem, 2vw, 1.4rem);
  border-left: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--surface) 76%, transparent);
}

.timeline strong {
  display: block;
  margin-bottom: var(--space-2xs);
  color: var(--ink);
}

.timeline p {
  color: var(--ink-soft);
}

.pricing-card {
  display: grid;
  gap: var(--space-sm);
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.pricing-card h3 {
  margin: 0;
  font-size: var(--step-1);
}

.pricing-card p,
.pricing-card li {
  color: var(--ink-soft);
}

.pricing-card ul {
  columns: 2;
  margin: 0;
  padding-left: 1.1rem;
}

.service-pricing {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: var(--space-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.service-pricing ul,
.service-columns ul {
  padding-left: 1.1rem;
}

.service-visual {
  margin: var(--space-md) 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.service-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.deliverable-card {
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.deliverable-card span {
  color: var(--accent-2);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.deliverable-card ul {
  margin: var(--space-xs) 0 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 1px;
  margin: var(--space-md) 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  list-style: none;
  background: var(--line);
}

.process-steps li {
  min-height: 5.5rem;
  display: grid;
  place-items: center;
  padding: var(--space-xs);
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  text-align: center;
}

.trust-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
}

.trust-notes p {
  margin: 0;
  padding: var(--space-sm);
  border-left: 2px solid var(--accent-2);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  color: var(--ink-soft);
}

.evidence-table {
  margin-top: var(--space-md);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.evidence-row {
  display: grid;
  grid-template-columns: 0.7fr 1fr 1fr;
  gap: 1px;
}

.evidence-row span {
  padding: var(--space-xs) var(--space-sm);
  background: var(--surface);
  color: var(--ink-soft);
}

.evidence-head span {
  color: var(--ink);
  font-weight: 800;
}

.evidence-level {
  display: inline-flex;
  width: fit-content;
  margin: var(--space-2xs) 0 var(--space-xs);
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  color: var(--accent-2);
  font-size: var(--step--1);
  font-weight: 800;
}

.evidence-levels {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.evidence-levels span {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: var(--step--1);
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.template-cell {
  min-height: 8rem;
  padding: var(--space-sm);
  background: var(--surface);
}

.template-cell span {
  color: var(--accent-2);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.template-cell p {
  margin-top: var(--space-sm);
  color: var(--ink);
  font-weight: 700;
}

.policy-list h2 {
  font-size: var(--step-0);
}

.official-links,
.footer-policy {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.official-links a,
.footer-policy a {
  color: var(--ink-soft);
  text-decoration: none;
}

.official-links a:hover,
.footer-policy a:hover {
  color: var(--accent-2);
}

.service-columns > div {
  padding: clamp(1.1rem, 2vw, 1.5rem);
}

.service-faq details {
  border-top: 1px solid var(--line);
  padding: var(--space-sm) 0;
}

.service-faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.service-faq summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 650;
}

.service-final {
  border-top: 1px solid var(--line);
}

/* ----------------------------------------------------------------- Footer */

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: var(--space-md) var(--space-xl);
  align-items: start;
  max-width: var(--container);
  margin: var(--space-2xl) auto 0;
  padding: var(--space-lg) var(--gutter) var(--space-xl);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--step--1);
}

.footer-brand .brand {
  display: inline-block;
  margin-bottom: var(--space-2xs);
  color: var(--ink);
}

.footer-brand p,
.footer-meta p {
  max-width: 60ch;
  letter-spacing: 0.02em;
  line-height: 1.55;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  align-items: center;
}

.footer-social a {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  padding: 0.28rem;
  border: 1px solid color-mix(in oklab, var(--line) 75%, transparent);
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--step--1);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    background-color 0.2s ease;
}

.footer-social img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.footer-social a:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
  color: var(--ink);
  text-decoration: none;
}

.footer-fine {
  color: var(--faint);
}

@media (max-width: 720px) {
  .civilization-hero {
    grid-template-columns: 1fr;
    padding-top: var(--space-md);
  }

  .civilization-hero__copy {
    order: 2;
    padding-top: var(--space-md);
  }

  .civilization-hero__media {
    order: 1;
  }

  .civilization-hero__media img {
    max-height: none;
  }

  .civilization-hero h1 {
    max-width: 11ch;
  }

  .hero {
    padding-bottom: clamp(2rem, 9vw, 3.5rem);
  }

  .hero-visual {
    min-height: 0;
    background-image: none;
    overflow: visible;
  }

  .hero-visual::after {
    content: none;
  }

  .hero-visual-image {
    display: block;
    width: 100%;
    height: auto;
  }

  .service-facts,
  .quick-stats,
  .lab-system-section,
  .origin-film-section,
  .mission-section,
  .split-section,
  .framework-detail,
  .service-list > div,
  .service-pricing,
  .deliverable-grid,
  .trust-notes {
    grid-template-columns: 1fr;
  }

  .framework-grid,
  .archive-grid,
  .bridge-grid,
  .signal-panel,
  .lab-orbit {
    grid-template-columns: 1fr;
  }

  .lab-orbit {
    border-radius: var(--radius-sm);
  }

  .pricing-card ul {
    columns: 1;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .evidence-row {
    grid-template-columns: 1fr;
  }

  .service-actions .button {
    width: 100%;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------ Motion / a11y */

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

/* --------------------------------------------------------- Responsive */

@media (max-width: 860px) {
  .site-header {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .site-header nav {
    width: 100%;
    gap: 0.55rem 0.9rem;
  }

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

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

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

  .book-detail {
    grid-template-columns: 1fr;
  }

  .book-detail img {
    position: static;
    max-width: 260px;
  }

  .section-head {
    align-items: start;
  }
}

@media (max-width: 520px) {
  .book-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}


/* ----------------------------------------------- Coaching page overrides */
/* Scoped via .coaching-hero on the /zh/coaching/ hero section. Lives in
   global.css instead of an inline <style> because Astro's scoped-style
   pipeline currently mis-resolves UNC paths during build. */
.coaching-hero {
  max-width: min(72rem, 100%);
  padding-bottom: clamp(3.5rem, 7vw, 5.5rem);
}
.coaching-hero h1 {
  max-width: 28ch;
  line-height: 1.34;
  letter-spacing: 0.005em;
}
.coaching-hero .lead {
  max-width: 58ch;
  margin-top: var(--space-md);
  line-height: 1.75;
}
.coaching-hero .service-actions {
  margin-top: clamp(2rem, 4vw, 2.75rem);
}
@media (max-width: 720px) {
  .coaching-hero h1,
  .coaching-hero .lead {
    max-width: 100%;
  }
}

.coaching-hero ~ .section > p,
.coaching-hero ~ .section > .lead {
  line-height: 1.85;
}
.coaching-hero ~ .section > p + p,
.coaching-hero ~ .section > p + .mission-quote,
.coaching-hero ~ .section > .service-list + p,
.coaching-hero ~ .section > .service-grid + p,
.coaching-hero ~ .section > .timeline + p {
  margin-top: clamp(1.1rem, 1.8vw, 1.6rem);
}

.coaching-hero ~ .section > .mission-quote {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: clamp(1rem, 2vw, 1.4rem);
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  line-height: 1.5;
}

/* ----------------------------------------------- Frameworks hub overrides */
.frameworks-hero h1 { max-width: 28ch; line-height: 1.34; letter-spacing: 0.005em; }
.frameworks-hero .lead { max-width: 58ch; line-height: 1.75; margin-top: var(--space-md); }
.frameworks-hero { max-width: min(72rem, 100%); padding-bottom: clamp(3.5rem, 7vw, 5.5rem); }

.framework-spoke h3 small { display: block; margin-top: 0.25rem; color: var(--muted); font-size: 0.85em; font-weight: 400; }
.framework-spoke-cta { margin-top: var(--space-sm); }
.framework-spoke-cta a { color: var(--accent); font-weight: 600; border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.framework-spoke-cta a:hover { color: var(--accent-2); border-bottom-color: var(--accent-2); }

/* ASI + PDS deep-page overrides — share coaching-style rhythm. */
.asi-hero, .pds-hero { max-width: min(72rem, 100%); padding-bottom: clamp(3.5rem, 7vw, 5.5rem); }
.asi-hero h1, .pds-hero h1 { max-width: 30ch; line-height: 1.34; letter-spacing: 0.005em; }
.asi-hero .lead, .pds-hero .lead { max-width: 60ch; margin-top: var(--space-md); line-height: 1.75; }
@media (max-width: 720px) {
  .frameworks-hero h1, .frameworks-hero .lead,
  .asi-hero h1, .asi-hero .lead,
  .pds-hero h1, .pds-hero .lead { max-width: 100%; }
}

.asi-hero ~ .section > p, .asi-hero ~ .section > .lead,
.pds-hero ~ .section > p, .pds-hero ~ .section > .lead,
.frameworks-hero ~ .section > p, .frameworks-hero ~ .section > .lead { line-height: 1.85; }

.asi-hero ~ .section > p + p,
.pds-hero ~ .section > p + p,
.frameworks-hero ~ .section > p + p,
.asi-hero ~ .section > p + .mission-quote,
.pds-hero ~ .section > p + .mission-quote,
.frameworks-hero ~ .section > p + .mission-quote,
.asi-hero ~ .section > .service-grid + p,
.pds-hero ~ .section > .service-grid + p,
.frameworks-hero ~ .section > .service-grid + p,
.asi-hero ~ .section > .process-steps + p,
.pds-hero ~ .section > .process-steps + p,
.asi-hero ~ .section > .system-layers + p,
.frameworks-hero ~ .section > .system-layers + p { margin-top: clamp(1.1rem, 1.8vw, 1.6rem); }

.asi-hero ~ .section > .mission-quote,
.pds-hero ~ .section > .mission-quote,
.frameworks-hero ~ .section > .mission-quote {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: clamp(1rem, 2vw, 1.4rem);
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  line-height: 1.5;
}

/* ----------------------------------- ASI bridge two-column + PDS 5-step grid */
/* The default .process-steps grid is 7-col which leaves dead space when
   a section has fewer steps. These overrides equalise width by step count
   and give the ASI bridge an illustration on the right. */
.process-steps-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.process-steps-stack {
  display: block;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0;
}
.process-steps-stack li {
  display: block;
  text-align: left;
  min-height: 0;
  padding: clamp(0.9rem, 1.6vw, 1.2rem) clamp(1rem, 2vw, 1.4rem);
  border-bottom: 1px solid var(--line);
  font-weight: 400;
}
.process-steps-stack li:last-child { border-bottom: none; }
.process-steps-stack li strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-1);
  font-weight: 500;
}
.process-steps-stack li p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.asi-bridge-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.5rem, 3.5vw, 3rem);
  align-items: start;
}
.asi-bridge-copy { min-width: 0; }
.asi-bridge-figure {
  margin: 0;
  position: sticky;
  top: clamp(1rem, 4vw, 2.5rem);
}
.asi-bridge-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
}
.asi-bridge-figure figcaption {
  margin-top: var(--space-xs);
  color: var(--muted);
  font-size: var(--step--1);
  text-align: center;
}

.human-ai-os-visual-section {
  padding-top: 0;
}
.human-ai-os-figure {
  margin: 0 auto;
  max-width: min(92rem, 100%);
}
.human-ai-os-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.human-ai-os-figure figcaption {
  margin-top: var(--space-xs);
  color: var(--muted);
  font-size: var(--step--1);
  text-align: center;
}

@media (max-width: 900px) {
  .asi-bridge-layout { grid-template-columns: minmax(0, 1fr); }
  .asi-bridge-figure { position: static; max-width: 36rem; margin: var(--space-md) auto 0; }
  .process-steps-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .process-steps-5 { grid-template-columns: minmax(0, 1fr); }
}

/* ----------------------------------------------- Research Notes overrides */
.notes-hero { max-width: min(72rem, 100%); padding-bottom: clamp(3.5rem, 7vw, 5.5rem); }
.notes-hero h1 { max-width: 28ch; line-height: 1.34; letter-spacing: 0.005em; }
.notes-hero .lead { max-width: 60ch; margin-top: var(--space-md); line-height: 1.75; }
@media (max-width: 720px) { .notes-hero h1, .notes-hero .lead { max-width: 100%; } }

.notes-hero ~ .section > p,
.notes-hero ~ .section > .lead { line-height: 1.85; }
.notes-hero ~ .section > p + p,
.notes-hero ~ .section > p + .mission-quote,
.notes-hero ~ .section > .service-grid + p,
.notes-hero ~ .section > .service-grid + .archive-hint { margin-top: clamp(1.1rem, 1.8vw, 1.6rem); }
.notes-hero ~ .section > .mission-quote {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: clamp(1rem, 2vw, 1.4rem);
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  line-height: 1.5;
}

/* Featured "this-week" note card */
.featured-note {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}
.featured-note header { margin-bottom: var(--space-sm); }
.featured-meta {
  display: flex; flex-wrap: wrap; gap: 0.4rem 0.6rem;
  margin: 0 0 var(--space-xs);
  color: var(--muted);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
}
.featured-note h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--step-3);
  line-height: 1.32;
}
.featured-note .lead { max-width: 64ch; line-height: 1.75; }
.featured-takeaways {
  margin-top: var(--space-md);
  padding: clamp(1rem, 2vw, 1.4rem) clamp(1rem, 2vw, 1.4rem) clamp(0.6rem, 1.5vw, 1rem);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
}
.featured-takeaways .eyebrow { margin-bottom: 0.6rem; }
.featured-takeaways ul {
  margin: 0; padding-left: 1.2rem;
  color: var(--ink-soft);
  line-height: 1.7;
}
.featured-takeaways li + li { margin-top: 0.5rem; }
.featured-note-availability {
  margin-top: var(--space-md);
  color: var(--muted);
  font-size: var(--step--1);
}
.featured-note .service-actions { margin-top: var(--space-md); }

/* Cases grid — equal columns; default service-grid uses auto-fit which is fine,
   but tighten the meta text for compactness. */
.notes-cases-grid .note-card span {
  font-variant-numeric: tabular-nums;
}
.note-card-tag {
  margin-top: var(--space-xs);
  color: var(--muted);
  font-size: var(--step--1);
}

.archive-hint {
  margin-top: var(--space-md);
  color: var(--muted);
  font-size: var(--step--1);
}

/* ----------------------------------------------- Beta banner (lab + notes) */
.beta-banner {
  display: block;
  margin-top: clamp(1.25rem, 2.4vw, 1.75rem);
  padding: clamp(0.75rem, 1.6vw, 1rem) clamp(1rem, 2vw, 1.4rem);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  color: var(--ink-soft);
  font-size: var(--step--1);
  line-height: 1.7;
  max-width: 64ch;
}
.beta-banner strong { color: var(--ink); }

/* ----------------------------------------------- About page overrides */
.about-hero { max-width: min(72rem, 100%); padding-bottom: clamp(3.5rem, 7vw, 5.5rem); }
.about-hero h1 { max-width: 28ch; line-height: 1.34; letter-spacing: 0.005em; }
.about-hero .lead { max-width: 62ch; margin-top: var(--space-md); line-height: 1.75; }
@media (max-width: 720px) { .about-hero h1, .about-hero .lead { max-width: 100%; } }

.about-hero ~ .section > p,
.about-hero ~ .section > .lead { line-height: 1.85; }
.about-hero ~ .section > p + p,
.about-hero ~ .section > p + .mission-quote,
.about-hero ~ .section > .service-grid + p,
.about-hero ~ .section > .service-list + p { margin-top: clamp(1.1rem, 1.8vw, 1.6rem); }
.about-hero ~ .section > .mission-quote {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: clamp(1rem, 2vw, 1.4rem);
  border-top: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  line-height: 1.5;
}

/* Identity grid: 3-column equal-width on desktop (賴士翔 / alicken / Eliyah Oren) */
.identity-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.identity-channels {
  margin-top: var(--space-sm);
  padding-top: var(--space-xs);
  border-top: 1px dashed color-mix(in srgb, var(--line) 70%, transparent);
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.6;
}
@media (max-width: 900px) { .identity-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .identity-grid { grid-template-columns: minmax(0, 1fr); } }


/* Threads Agent page */
.actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.text-link {
  color: var(--accent);
  font-weight: 700;
}

.service-list ol,
.service-list ul {
  color: var(--ink-soft);
  line-height: 2;
  padding-left: 1.5rem;
}