:root {
  color-scheme: dark;
  --font-display: "Inter Tight", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Inter", "Avenir Next", "Segoe UI", sans-serif;
  --font-label: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --container: min(1240px, 100% - 2.5rem);
  --radius-sm: 6px;
  --radius-md: 10px;
  --section-pad: clamp(1.25rem, 3vw, 3rem);
  --nav-height: 68px;

  --bg: #131410;
  --surface: #0b0b0b;
  --surface-raised: #121212;
  --surface-muted: #1b1b1b;
  --text: #f4f1ea;
  --text-muted: #9b9b9b;
  --line: #2a2a2a;
  --line-strong: #3a3a3a;
  --accent: #3f5f73;
  --accent-soft: #6f8796;
  --chip-bg: #111111;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #faf8f2;
  --surface: #faf8f2;
  --surface-raised: #ffffff;
  --surface-muted: #eeeae1;
  --text: #111111;
  --text-muted: #5f6366;
  --line: #c9c2b4;
  --line-strong: #bdb7aa;
  --accent: #3f5f73;
  --accent-soft: #6f675c;
  --chip-bg: #f0ece3;
  --shadow: 0 16px 34px rgba(35, 35, 35, 0.08);

  --btn-primary-bg: #2f4f62;
  --btn-primary-text: #f8f6f0;
  --btn-primary-border: #2f4f62;
  --btn-primary-hover-bg: #243e4d;
  --btn-primary-hover-text: #ffffff;
  --btn-primary-hover-border: #243e4d;

  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: #111111;
  --btn-secondary-border: #d8d2c4;
  --btn-secondary-hover-bg: #f4f1ea;
  --btn-secondary-hover-text: #050505;
  --btn-secondary-hover-border: #beb7a8;

}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: none;
}

html::-webkit-scrollbar {
  width: 0;
  height: 0;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
  scrollbar-width: none;
}

body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

@supports (color: color-mix(in srgb, #000 10%, #fff)) {
  body {
    background: radial-gradient(circle at 90% 5%, color-mix(in srgb, var(--accent) 9%, transparent) 0, transparent 30%),
      radial-gradient(circle at 10% 95%, color-mix(in srgb, var(--accent-soft) 10%, transparent) 0, transparent 36%),
      var(--bg);
  }
}

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  background: rgba(11, 11, 11, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transform: translateY(-115%);
  opacity: 0;
  pointer-events: none;
  transition: transform 520ms cubic-bezier(0.2, 0.85, 0.2, 1), opacity 380ms ease;
}

body.nav-visible .site-nav {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

:root[data-theme="light"] .site-nav {
  background: rgba(250, 248, 242, 0.9);
}

@supports (color: color-mix(in srgb, #000 10%, #fff)) {
  .site-nav {
    background: color-mix(in srgb, var(--surface) 86%, transparent);
  }
}

.nav-inner {
  width: var(--container);
  margin: 0 auto;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.025em;
  color: var(--text);
  text-decoration: none;
}

.brand:visited,
.brand:hover,
.brand:focus-visible,
.brand:active {
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.2rem;
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.68rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 220ms ease;
}

.nav-links a.is-active {
  color: var(--text);
}

.nav-links a#nav-philosophy {
  position: relative;
}

.nav-links a#nav-philosophy::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.34rem;
  width: 100%;
  height: 1px;
  background: var(--accent-soft);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 340ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.nav-links a#nav-philosophy.is-active::after {
  transform: scaleX(1);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
}

.nav-link-underline {
  position: relative;
}

.nav-link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.34rem;
  width: 100%;
  height: 1px;
  background: var(--accent-soft);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 340ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.nav-link-underline:hover::after,
.nav-link-underline:focus-visible::after {
  transform: scaleX(1);
}

.viewport {
  scroll-snap-type: y mandatory;
  overscroll-behavior-y: contain;
  scrollbar-width: none;
  touch-action: pan-y;
}

.viewport::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.panel {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: grid;
  align-items: center;
  padding: calc(var(--nav-height) + var(--section-pad)) 0 var(--section-pad);
}

.panel-inner {
  width: var(--container);
  margin: 0 auto;
}

.panel-intro {
  padding-top: var(--section-pad);
}

.panel-grid {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 2.75rem);
}

.panel-grid.columns {
  grid-template-columns: 1fr;
}

.eyebrow {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.hero-title {
  margin: 0;
  max-width: 15ch;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.hero-copy,
.body-copy {
  max-width: 62ch;
  color: var(--text-muted);
  font-size: clamp(1rem, 2.1vw, 1.24rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.82rem 1.1rem;
  font-family: var(--font-label);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #f7f7f7;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-soft);
}

.btn-secondary {
  background: var(--surface-raised);
  border-color: var(--line);
  color: var(--text);
}

:root[data-theme="light"] .btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-border);
}

:root[data-theme="light"] .btn-primary:hover,
:root[data-theme="light"] .btn-primary:focus-visible {
  background: var(--btn-primary-hover-bg);
  color: var(--btn-primary-hover-text);
  border-color: var(--btn-primary-hover-border);
}

:root[data-theme="light"] .btn-secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--btn-secondary-border);
}

:root[data-theme="light"] .btn-secondary:hover,
:root[data-theme="light"] .btn-secondary:focus-visible {
  background: var(--btn-secondary-hover-bg);
  color: var(--btn-secondary-hover-text);
  border-color: var(--btn-secondary-hover-border);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  background: var(--surface-raised);
  border-radius: var(--radius-md);
  padding: clamp(1rem, 2vw, 1.8rem);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform 320ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 320ms ease, border-color 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover,
.card:focus-within {
  transform: scale(1.055);
  border-color: var(--accent-soft);
  box-shadow: 0 22px 48px rgba(63, 95, 115, 0.32), var(--shadow);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  letter-spacing: -0.02em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
}

.rule {
  width: 3.25rem;
  height: 1px;
  background: var(--accent-soft);
  margin-bottom: 0.9rem;
  transition: width 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover .rule,
.card:focus-within .rule {
  width: 4.25rem;
}

.pillar-card__title {
  margin: 0 0 0.7rem;
}

.pillar-card__body {
  margin: 0;
}

:root[data-theme="light"] .pillar-card {
  position: relative;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid #d8d0c2;
  box-shadow:
    0 1px 0 rgba(17, 17, 17, 0.04),
    0 18px 42px rgba(17, 17, 17, 0.055);
  transition:
    border-color 170ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 170ms cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="light"] .pillar-card:hover,
:root[data-theme="light"] .pillar-card:focus-within {
  transform: none;
  border-color: #b8afa0;
  box-shadow:
    0 1px 0 rgba(17, 17, 17, 0.05),
    0 24px 56px rgba(17, 17, 17, 0.085);
}

:root[data-theme="light"] .pillar-card::after {
  content: "";
  position: absolute;
  left: 32px;
  right: 32px;
  bottom: 0;
  height: 1px;
  background: rgba(111, 103, 92, 0.22);
}

:root[data-theme="light"] .pillar-card__title {
  color: #111111;
}

:root[data-theme="light"] .pillar-card__body {
  color: #5f5a52;
}

:root[data-theme="light"] .pillar-card .rule {
  width: 3.25rem;
  background: #6f675c;
  transition:
    width 170ms cubic-bezier(0.16, 1, 0.3, 1),
    background-color 170ms cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="light"] .pillar-card:hover .rule,
:root[data-theme="light"] .pillar-card:focus-within .rule {
  width: 4.25rem;
  background: #2f4f62;
}

.quote-shell {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

@supports (color: color-mix(in srgb, #000 10%, #fff)) {
  .quote-shell {
    background: color-mix(in srgb, var(--surface) 84%, transparent);
  }
}

.quote-title {
  max-width: 20ch;
  margin: 0 auto 1.1rem;
  text-align: center;
  font-family: var(--font-display);
  line-height: 1;
  letter-spacing: -0.04em;
  font-size: clamp(1.9rem, 6vw, 4.1rem);
}

.quote-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
  color: var(--text-muted);
  text-align: center;
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.inline-chip {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  background: var(--chip-bg);
  color: var(--accent);
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
}

.footer {
  border-top: 1px solid var(--line-strong);
  padding: 1.45rem 0 1.6rem;
}

.footer-inner {
  width: min(680px, calc(100% - 2.5rem));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.95rem;
  align-items: center;
  justify-items: center;
  text-align: center;
}

.footer-meta,
.footer a {
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.65rem;
  color: var(--text-muted);
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  will-change: transform, opacity;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
  transition: transform 1150ms cubic-bezier(0.2, 0.9, 0.2, 1), opacity 1050ms cubic-bezier(0.2, 0.9, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.delay-1 { --reveal-delay: 260ms; }
.reveal.delay-2 { --reveal-delay: 560ms; }
.reveal.delay-3 { --reveal-delay: 900ms; }

/* Keep staggered reveal, but never delay card hover border/shadow timing. */
.card.reveal.visible {
  transition-property: transform, opacity, border-color, box-shadow;
  transition-duration: 1150ms, 1050ms, 170ms, 170ms;
  transition-timing-function: cubic-bezier(0.2, 0.9, 0.2, 1), cubic-bezier(0.2, 0.9, 0.2, 1), cubic-bezier(0.16, 1, 0.3, 1), cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms), var(--reveal-delay, 0ms), 0ms, 0ms;
}

@media (min-width: 900px) {
  .panel-grid.columns {
    grid-template-columns: 1.1fr 2fr;
  }
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 0.95rem;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  :root {
    --container: min(980px, 100% - 4rem);
    --section-pad: clamp(1.5rem, 2.8vw, 2.35rem);
  }

  .nav-links {
    display: flex;
    gap: 1rem;
    font-size: 0.64rem;
    letter-spacing: 0.12em;
  }

  .hero-title {
    font-size: clamp(2rem, 5.8vw, 4rem);
    max-width: 17ch;
  }

  .hero-copy,
  .body-copy {
    font-size: clamp(0.98rem, 1.65vw, 1.14rem);
    max-width: 58ch;
  }

  .panel-grid.columns {
    grid-template-columns: minmax(160px, 0.9fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .footer-inner {
    width: min(740px, calc(100% - 4rem));
  }
}

@media (max-width: 780px) {
  .nav-links {
    display: none;
  }
  .actions {
    width: 100%;
  }
  .actions .btn {
    width: 100%;
    text-align: center;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .viewport {
    scroll-snap-type: y proximity;
  }
  .reveal,
  .reveal.visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}