/* ============================================================
   Exponential Venture Capital — site styles
   Design direction per V2 brief §7:
   - institutional venture letter × editorial publication × restrained tech
   - warm off-white, deep charcoal, single restrained accent
   - serif headlines, humanist sans body
   - editorial asymmetry; no SaaS feature grids; no decorative gradients
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --bg: #f6f3ee; /* warm off-white */
  --bg-alt: #efebe3; /* slightly deeper warm tone for bands */
  --bg-dark: #111418; /* charcoal for dark sections */
  --surface: #ffffff;
  --border: #e4dfd5;
  --border-strong: #c9c2b3;
  --ink: #111418; /* primary type */
  --ink-soft: #2a2e35;
  --ink-mute: #56606b;
  --ink-quiet: #7a838f;
  --accent: #0c6e5a; /* deep, slightly desaturated teal */
  --accent-hover: #08534a;
  --on-dark: #f6f3ee;
  --on-dark-mute: #b8b5ad;

  --font-display: "Fraunces", "Tiempos Headline", "Georgia", serif;
  --font-body: "Inter", "Söhne", "Helvetica Neue", system-ui, sans-serif;

  --max: 1280px;
  --max-narrow: 760px;
  --max-wide: 1440px;
  --gutter: clamp(1.25rem, 5vw, 5rem);

  --radius: 2px; /* almost square — editorial, not soft */
  --shadow-sm: 0 1px 3px rgba(17, 20, 24, 0.06);
  --shadow-md: 0 8px 32px rgba(17, 20, 24, 0.08);

  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink-soft);
  line-height: 1.6;
  font-weight: 400;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
::selection {
  background: var(--ink);
  color: var(--bg);
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ---------- Typography ---------- */
.display,
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 400;
  font-style: normal;
  letter-spacing: -0.015em;
  line-height: 1.05;
}
h1,
.h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 400;
}
h2,
.h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
h3,
.h3 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.15;
}
h4,
.h4 {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
}
p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.lead {
  font-size: 1.25rem;
  line-height: 1.55;
  color: var(--ink-soft);
}
em {
  font-style: italic;
  font-family: var(--font-display);
  color: var(--ink);
}
strong {
  font-weight: 600;
  color: var(--ink);
}
small {
  font-size: 0.875rem;
  color: var(--ink-mute);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--ink-mute);
  display: inline-block;
}

/* ---------- Layout primitives ---------- */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.container--narrow {
  max-width: var(--max-narrow);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.container--wide {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: clamp(4rem, 9vw, 7rem);
}
.section--tight {
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.section--lg {
  padding-block: clamp(5rem, 11vw, 9rem);
}
.section--dark {
  background: var(--bg-dark);
  color: var(--on-dark);
}
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--on-dark);
}
.section--dark p {
  color: var(--on-dark-mute);
}
.section--dark em,
.section--dark strong {
  color: var(--on-dark);
}
.section--alt {
  background: var(--bg-alt);
}
.section--bordered {
  border-top: 1px solid var(--border);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
}
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1rem, 2vw, 2rem);
}
@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.offset-8 {
  grid-column: 1 / -1;
}
.offset-9 {
  grid-column: 1 / -1;
}
@media (min-width: 1024px) {
  .offset-8 {
    grid-column: 3 / span 8;
  }
  .offset-9 {
    grid-column: 2 / span 9;
  }
}

/* ---------- Buttons & links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition:
    transform 180ms var(--ease),
    background 180ms var(--ease),
    color 180ms var(--ease),
    border-color 180ms var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--ink);
  color: var(--bg);
}
.btn--primary:hover {
  background: var(--accent);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  border-color: var(--ink);
}
.btn--on-dark {
  background: var(--bg);
  color: var(--ink);
}
.btn--on-dark:hover {
  background: var(--accent);
  color: var(--bg);
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn .arrow,
.text-link .arrow {
  transition: transform 180ms var(--ease);
}
.btn:hover .arrow,
.text-link:hover .arrow {
  transform: translateX(3px);
}

.text-link {
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 2px;
  transition:
    border-color 180ms var(--ease),
    color 180ms var(--ease);
}
.text-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.text-link--quiet {
  color: var(--ink-mute);
  border-bottom-color: transparent;
}
.text-link--quiet:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 243, 238, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition:
    border-color 180ms var(--ease),
    box-shadow 180ms var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem var(--gutter);
  gap: 1.5rem;
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  white-space: nowrap;
}
.wordmark em {
  font-style: italic;
}
.nav-list {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
}
.nav-list a {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  font-weight: 450;
  transition: color 180ms var(--ease);
}
.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--ink);
}
.nav-list a[aria-current="page"] {
  font-weight: 500;
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-toggle {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
}
.nav-toggle__bars {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--ink);
  position: relative;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: var(--ink);
}
.nav-toggle__bars::before {
  top: -5px;
}
.nav-toggle__bars::after {
  top: 5px;
}
@media (min-width: 960px) {
  .nav-list {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 60;
  transform: translateY(-100%);
  transition: transform 280ms var(--ease);
  display: flex;
  flex-direction: column;
  padding: 5.5rem var(--gutter) 2rem;
}
.drawer.is-open {
  transform: translateY(0);
}
.drawer__close {
  position: absolute;
  top: 1.125rem;
  right: var(--gutter);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 1.25rem;
  color: var(--ink);
}
.drawer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.drawer__list a {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.drawer__cta {
  margin-top: 2rem;
}
@media (min-width: 960px) {
  .drawer {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(5rem, 12vw, 9rem) clamp(4rem, 9vw, 7rem);
}
.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.hero h1 {
  max-width: 18ch;
  margin-block: 1.25rem 1.5rem;
}
.hero .lead {
  max-width: 56ch;
  color: var(--ink-soft);
}
.hero__creed {
  margin-top: 2rem;
  max-width: 56ch;
}
.hero__creed p {
  margin-top: 1rem;
}
.hero__creed p:first-child {
  margin-top: 0;
}
.hero__ctas {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}
.hero__locations {
  margin-top: 3rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.hero__locations span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.hero__locations span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Trust strip ---------- */
.trust {
  border-block: 1px solid var(--border);
  background: var(--bg);
}
.trust__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-block: 2.5rem;
  align-items: start;
}
@media (min-width: 720px) {
  .trust__inner {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
  }
}
.trust__stat {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.trust__stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 3.6vw, 3rem);
  color: var(--ink);
  font-feature-settings:
    "tnum" 1,
    "ss01" 1;
  letter-spacing: -0.02em;
  line-height: 1;
}
.trust__stat-label {
  font-size: 0.875rem;
  color: var(--ink-mute);
  line-height: 1.45;
  max-width: 36ch;
}
.trust__note {
  font-size: 0.8125rem;
  color: var(--ink-quiet);
  font-style: italic;
  padding-block: 1.5rem 0;
  border-top: 1px solid var(--border);
}

/* ---------- Editorial list (numbered, no cards) ---------- */
.edlist {
  list-style: none;
  display: grid;
  gap: 2rem;
}
.edlist > li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.edlist__num {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink-mute);
  font-feature-settings: "tnum" 1;
}
.edlist__title {
  color: var(--ink);
  font-weight: 500;
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}
.edlist__body {
  color: var(--ink-soft);
  font-size: 1.0625rem;
  line-height: 1.65;
}

/* ---------- Three statements (homepage Section A) ---------- */
.statements {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-top: 3rem;
}
@media (min-width: 900px) {
  .statements {
    grid-template-columns: repeat(3, 1fr);
    gap: 3.5rem;
  }
}
.statement__verb {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.statement__body {
  color: var(--ink-soft);
}

/* ---------- Diagram styling ---------- */
.diagram {
  margin-block: clamp(2.5rem, 6vw, 4.5rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.diagram--dark {
  background: var(--bg-dark);
  border-color: rgba(255, 255, 255, 0.08);
}
.diagram svg {
  width: 100%;
  height: auto;
}
.diagram__caption {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9375rem;
  color: var(--ink-mute);
  font-style: italic;
}
.diagram__legend {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem 2rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.9375rem;
}
@media (min-width: 720px) {
  .diagram__legend {
    grid-template-columns: 1fr 1fr;
  }
}
.diagram__legend dt {
  font-weight: 600;
  color: var(--ink);
  display: inline;
  margin-right: 0.5rem;
  font-family: var(--font-body);
  letter-spacing: 0.02em;
}
.diagram__legend dd {
  display: inline;
  color: var(--ink-soft);
}
.diagram__legend > div {
  padding: 0.25rem 0;
}

/* ---------- Split CTA band ---------- */
.split-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border-block: 1px solid var(--border);
  margin-top: 0;
}
@media (min-width: 900px) {
  .split-cta {
    grid-template-columns: 1fr 1fr;
  }
}
.split-cta__card {
  background: var(--bg);
  padding: clamp(2.5rem, 5vw, 4.5rem) clamp(1.5rem, 4vw, 3.5rem);
}
.split-cta__card:hover {
  background: var(--bg-alt);
  transition: background 220ms var(--ease);
}
.split-cta__eyebrow {
  color: var(--ink-mute);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.split-cta__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  color: var(--ink);
  margin-block: 1rem 1rem;
  max-width: 22ch;
  letter-spacing: -0.01em;
}
.split-cta__body {
  color: var(--ink-soft);
  margin-bottom: 1.75rem;
  max-width: 38ch;
}
.split-cta__quiet {
  text-align: center;
  padding: 2rem var(--gutter);
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.split-cta__quiet a {
  color: var(--ink);
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 2px;
}
.split-cta__quiet a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Partner cards (Team page) ---------- */
.partner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-block: clamp(2.5rem, 4vw, 3.5rem);
  border-top: 1px solid var(--border);
}
@media (min-width: 800px) {
  .partner {
    grid-template-columns: 200px 1fr;
    gap: 3rem;
    align-items: start;
  }
}
.partner__portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--ink-quiet);
  letter-spacing: -0.02em;
  filter: grayscale(1);
  overflow: hidden;
  position: relative;
}
.partner__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.18);
  transform-origin: center 22%;
  transition: transform 600ms var(--ease);
}
.partner__portrait--salim img {
  object-position: center 24%;
  transform-origin: center 24%;
}
.partner__portrait--james img {
  object-position: center 18%;
  transform-origin: center 20%;
}
.partner__role {
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 0.5rem;
}
.partner__name {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.4vw, 2.25rem);
  color: var(--ink);
  letter-spacing: -0.015em;
  margin-bottom: 1.25rem;
}
.partner__bio {
  color: var(--ink-soft);
  max-width: 64ch;
}
.partner__bio + .partner__bio {
  margin-top: 0.875rem;
}

/* AI partner card variant — no portrait, schematic mark */
.ai-partner {
  border-top: 1px solid var(--border);
  padding-block: clamp(2.5rem, 4vw, 3rem);
}
.ai-partner__mark {
  width: 60px;
  height: 60px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.ai-partner__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--ink);
  margin-bottom: 0.75rem;
}
.ai-partner__body {
  color: var(--ink-soft);
  max-width: 64ch;
}

/* ---------- Three-block paths (Community page) ---------- */
.paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-top: 3rem;
}
@media (min-width: 900px) {
  .paths {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
  }
}
.path__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  color: var(--ink);
  margin-bottom: 0.75rem;
}
.path__body {
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
}

/* ---------- Three doors (Contact page) ---------- */
.doors {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--border);
  border-block: 1px solid var(--border);
  margin-block: 3rem 4rem;
}
@media (min-width: 900px) {
  .doors {
    grid-template-columns: repeat(3, 1fr);
  }
}
.door {
  background: var(--bg);
  padding: clamp(2rem, 4vw, 3rem);
}
.door:hover {
  background: var(--bg-alt);
  transition: background 220ms var(--ease);
}
.door__eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.door__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--ink);
  margin-block: 0.875rem 1rem;
}
.door__body {
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
  min-height: 4.5rem;
}

/* ---------- Forms ---------- */
.form {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
}
.field {
  display: grid;
  gap: 0.5rem;
}
.field--inline {
  grid-template-columns: 1fr;
}
.field label {
  font-size: 0.875rem;
  color: var(--ink);
  font-weight: 500;
}
.field .help {
  font-size: 0.8125rem;
  color: var(--ink-mute);
}
.field .required {
  color: var(--accent);
  margin-left: 2px;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="url"],
.field textarea,
.field select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.75rem 0.875rem;
  font-size: 1rem;
  color: var(--ink);
  transition:
    border-color 180ms var(--ease),
    background 180ms var(--ease);
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--ink);
}
.field textarea {
  min-height: 7rem;
  resize: vertical;
  font-family: var(--font-body);
  line-height: 1.55;
}
.field .radio-group {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.25rem;
}
.field .radio {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}
.field .radio input {
  accent-color: var(--accent);
}
.form__submit {
  display: flex;
  justify-content: flex-start;
  margin-top: 0.5rem;
}
.form__note {
  font-size: 0.8125rem;
  color: var(--ink-mute);
}
.form__success {
  display: none;
  padding: 1.5rem;
  border: 1px solid var(--accent);
  background: rgba(12, 110, 90, 0.06);
  color: var(--ink);
  border-radius: var(--radius);
}
.form__success.is-visible {
  display: block;
}
.form.is-submitted .form__fields {
  display: none;
}

/* ---------- Subscribe widget ---------- */
.subscribe {
  display: grid;
  gap: 0.75rem;
  max-width: 440px;
}
.subscribe__label {
  font-size: 0.875rem;
  color: var(--ink);
  font-weight: 500;
}
.subscribe__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}
.subscribe input {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.75rem 0.875rem;
  font-size: 0.9375rem;
  color: var(--ink);
}
.subscribe input:focus {
  outline: none;
  border-color: var(--ink);
}
.subscribe button {
  background: var(--ink);
  color: var(--bg);
  padding: 0.75rem 1.25rem;
  font-size: 0.9375rem;
  border-radius: var(--radius);
  transition: background 180ms var(--ease);
}
.subscribe button:hover {
  background: var(--accent);
}
.subscribe__success {
  font-size: 0.875rem;
  color: var(--accent);
  display: none;
}
.subscribe.is-done .subscribe__row {
  display: none;
}
.subscribe.is-done .subscribe__success {
  display: block;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--on-dark-mute);
  padding-block: clamp(4rem, 7vw, 6rem) 2rem;
}
.site-footer__brand {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
@media (min-width: 900px) {
  .site-footer__brand {
    grid-template-columns: 1.4fr 1fr;
    gap: 4rem;
  }
}
.site-footer .wordmark {
  color: var(--on-dark);
  font-size: 1.5rem;
}
.site-footer__tagline {
  color: var(--on-dark-mute);
  max-width: 48ch;
  margin-top: 1rem;
  font-size: 1.0625rem;
}
.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 2rem;
  padding-block: 3rem;
}
@media (min-width: 720px) {
  .site-footer__cols {
    grid-template-columns: repeat(4, 1fr);
  }
}
.site-footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-dark-mute);
  font-weight: 500;
  margin-bottom: 1.25rem;
}
.site-footer__col ul {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}
.site-footer__col a {
  color: var(--on-dark);
  font-size: 0.9375rem;
  transition: color 180ms var(--ease);
}
.site-footer__col a:hover {
  color: var(--accent);
}
.site-footer__base {
  display: grid;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  color: var(--on-dark-mute);
}
@media (min-width: 720px) {
  .site-footer__base {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}
.site-footer__social {
  display: flex;
  gap: 1.25rem;
}
.site-footer__social a {
  color: var(--on-dark-mute);
}
.site-footer__social a:hover {
  color: var(--accent);
}
.site-footer .subscribe {
  max-width: none;
}
.site-footer .subscribe__label {
  color: var(--on-dark);
}
.site-footer .subscribe input {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.16);
  color: var(--on-dark);
}
.site-footer .subscribe input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}
.site-footer .subscribe button {
  background: var(--bg);
  color: var(--ink);
}
.site-footer .subscribe button:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ---------- Living-book iframe ---------- */
.book-frame {
  margin-block: 3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.book-frame__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--ink-mute);
}
.book-frame iframe {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: none;
  display: block;
}

/* ---------- Routing modal (Talk to us) ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(17, 20, 24, 0.55);
  z-index: 70;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--gutter);
}
.modal.is-open {
  display: flex;
}
.modal__card {
  background: var(--bg);
  max-width: 480px;
  width: 100%;
  padding: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
}
.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-mute);
  font-size: 1.25rem;
}
.modal h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.modal p {
  color: var(--ink-mute);
  margin-bottom: 1.75rem;
  font-size: 0.9375rem;
}
.modal__choices {
  display: grid;
  gap: 0.625rem;
}
.modal__choice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--ink);
  font-weight: 500;
  transition:
    border-color 180ms var(--ease),
    background 180ms var(--ease);
}
.modal__choice:hover {
  border-color: var(--ink);
  background: var(--bg-alt);
}
.modal__choice span:last-child {
  color: var(--ink-mute);
}

/* ---------- Utility ---------- */
.center {
  text-align: center;
}
.muted {
  color: var(--ink-mute);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
[hidden] {
  display: none !important;
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 600ms var(--ease),
    transform 600ms var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ---------- Compact CTA row ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  margin-top: 1.5rem;
  align-items: center;
}

/* ---------- Stub page ---------- */
.stub {
  padding-block: clamp(6rem, 14vw, 10rem);
  text-align: left;
}
.stub h1 {
  max-width: 22ch;
  margin-bottom: 1.5rem;
}
.stub p {
  max-width: 54ch;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}

/* ---------- Video band (Salim on Moonshots) ---------- */
.section--video {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-alt);
}
.video-band {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.video-band__head {
  max-width: 60ch;
  margin-inline: auto;
}
.video-band__title {
  margin-top: 0.75rem;
}
.video-band__kicker {
  margin-top: 0.5rem;
  color: var(--ink-mute);
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}
.video-figure {
  width: 100%;
  max-width: 1100px;
  margin: 2.25rem auto 0;
  border-radius: 8px;
  overflow: hidden;
  background: #000;
  box-shadow:
    0 24px 64px -24px rgba(17, 20, 24, 0.4),
    0 2px 6px rgba(17, 20, 24, 0.08);
}
.video-player {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: #000;
  outline: none;
}
.video-player:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}