:root {
  --color-ink: #171815;
  --color-charcoal: #252723;
  --color-stone: #686A63;
  --color-bone: #F4F0E8;
  --color-paper: #FAF8F3;
  --color-forest: #34483C;
  --color-moss: #667565;
  --color-lehua: #A63B35;
  --color-lava: #332B28;
  --color-sand: #D7C9B3;
  --color-white: #FFFFFF;

  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-sans: Inter, "Helvetica Neue", Arial, sans-serif;

  --text-xs: 0.78rem;
  --text-sm: 0.9rem;
  --text-base: 1rem;
  --text-lg: 1.2rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.75rem;
  --text-4xl: 4rem;
  --text-5xl: clamp(4.75rem, 8vw, 8rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;
  --space-11: 12rem;

  --content-width: 78rem;
  --reading-width: 46rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;

  --border-subtle: 1px solid rgba(23, 24, 21, 0.14);

  --transition-fast: 160ms ease;
  --transition-base: 260ms ease;
}

/* --------------------------------
   RESET / BASE
-------------------------------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

button,
input,
textarea,
select {
  font: inherit;
}

::selection {
  background: var(--color-sand);
  color: var(--color-ink);
}

/* --------------------------------
   TYPOGRAPHY
-------------------------------- */

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--space-5);
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(3.4rem, 8vw, 7rem);
}

h2 {
  font-size: clamp(2.6rem, 5vw, 4.8rem);
}

h3 {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
}

h4 {
  font-size: var(--text-xl);
}

p {
  margin: 0 0 var(--space-5);
}

.lead {
  max-width: 54rem;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.6;
}

.eyebrow {
  margin-bottom: var(--space-5);
  color: var(--color-forest);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.pullquote {
  max-width: 60rem;
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 4.7rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.reading-width {
  max-width: var(--reading-width);
}

/* --------------------------------
   LAYOUT
-------------------------------- */

.site-container {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 4rem);
}

.section {
  padding-block: clamp(5rem, 10vw, 10rem);
}

.section--compact {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.section--bone {
  background: var(--color-bone);
}

.section--dark {
  background: var(--color-charcoal);
  color: var(--color-paper);
}

.section--forest {
  background: var(--color-forest);
  color: var(--color-paper);
}

.grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 3rem);
}

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

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.stack > * + * {
  margin-top: var(--space-5);
}

/* --------------------------------
   HEADER
-------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(250, 248, 243, 0.94);
  backdrop-filter: blur(14px);
  transition:
    border-color var(--transition-base),
    padding var(--transition-base);
}

.site-header.is-scrolled {
  border-color: rgba(23, 24, 21, 0.1);
}

.site-header__inner {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  padding: 1.25rem clamp(1.25rem, 4vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 600;
  text-decoration: none;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 2rem);
}

.primary-nav a {
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
}

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

/* --------------------------------
   HERO
-------------------------------- */

.hero {
  min-height: min(82vh, 56rem);
  display: flex;
  align-items: flex-end;
  padding-block: clamp(8rem, 16vw, 13rem) clamp(5rem, 9vw, 8rem);
}

.hero__content {
  max-width: 68rem;
}

.hero h1 {
  max-width: 13ch;
}

.hero__copy {
  max-width: 45rem;
  margin-top: var(--space-6);
}

.hero--dark {
  background:
    linear-gradient(rgba(20, 20, 18, 0.42), rgba(20, 20, 18, 0.72)),
    var(--hero-image, none);
  background-position: center;
  background-size: cover;
  color: var(--color-paper);
}

/* --------------------------------
   BUTTONS
-------------------------------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.8rem 1.25rem;
  border: 1px solid var(--color-ink);
  background: var(--color-ink);
  color: var(--color-paper);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.button:hover,
.button:focus-visible {
  background: var(--color-forest);
  border-color: var(--color-forest);
  transform: translateY(-1px);
}

.button--outline {
  background: transparent;
  color: var(--color-ink);
}

.button--outline:hover,
.button--outline:focus-visible {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

.button--light {
  border-color: var(--color-paper);
  background: var(--color-paper);
  color: var(--color-ink);
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

/* --------------------------------
   CARDS
-------------------------------- */

.card {
  border-top: var(--border-subtle);
  padding-top: var(--space-5);
}

.card h3 {
  margin-bottom: var(--space-4);
}

.card__link {
  display: inline-block;
  margin-top: var(--space-4);
  color: var(--color-forest);
  font-weight: 700;
  text-decoration: none;
}

.card__link::after {
  content: " →";
}

/* --------------------------------
   SERVICE GRID
-------------------------------- */

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--border-subtle);
}

.service-grid__item {
  min-height: 20rem;
  padding: clamp(2rem, 4vw, 4rem);
  border-bottom: var(--border-subtle);
}

.service-grid__item:nth-child(odd) {
  border-right: var(--border-subtle);
}

.service-grid__item:hover {
  background: var(--color-bone);
}

/* --------------------------------
   ECOSYSTEM
-------------------------------- */

.ecosystem {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-7);
}

.ecosystem__item {
  position: relative;
  padding-top: var(--space-5);
  border-top: var(--border-subtle);
}

.ecosystem__number {
  margin-bottom: var(--space-4);
  color: var(--color-lehua);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
}

/* --------------------------------
   PROCESS
-------------------------------- */

.process-step {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-7);
  border-top: var(--border-subtle);
}

.process-step__number {
  color: var(--color-lehua);
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
}

/* --------------------------------
   FORMS
-------------------------------- */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field--full {
  grid-column: 1 / -1;
}

label {
  font-size: var(--text-sm);
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid rgba(23, 24, 21, 0.25);
  border-radius: 0;
  background: var(--color-white);
  color: var(--color-ink);
  padding: 0.9rem 1rem;
}

textarea {
  min-height: 11rem;
  resize: vertical;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-forest);
  outline-offset: 2px;
}

/* --------------------------------
   FOOTER
-------------------------------- */

.site-footer {
  background: var(--color-charcoal);
  color: var(--color-paper);
}

.site-footer__inner {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  padding: clamp(5rem, 8vw, 8rem) clamp(1.25rem, 4vw, 4rem);
}

.site-footer a {
  color: inherit;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: var(--space-7);
}

.site-footer__legal {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(244, 240, 232, 0.18);
  font-size: var(--text-sm);
  color: rgba(244, 240, 232, 0.72);
}

/* --------------------------------
   ACCESSIBILITY
-------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  background: var(--color-paper);
  color: var(--color-ink);
}

:focus-visible {
  outline: 2px solid var(--color-lehua);
  outline-offset: 3px;
}

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

/* --------------------------------
   RESPONSIVE
-------------------------------- */

@media (max-width: 960px) {
  .primary-nav {
    display: none;
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3,
  .split,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 700px) {
  .grid--2,
  .grid--3,
  .grid--4,
  .form-grid,
  .ecosystem,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-grid__item:nth-child(odd) {
    border-right: 0;
  }

  .process-step {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: clamp(3rem, 16vw, 5rem);
  }
}