/* ---------------------------------------------------------------------------
   Kaizen Styles — editorial layout with scroll-driven motion.

   No dependencies. Tokens live in :root; the olive accent is taken from the
   product itself (the Release 01 waistband and the Release 02 colourway), so
   the palette is the brand's rather than an invented one.
   --------------------------------------------------------------------------- */

:root {
  --ks-bg: #0a0a0b;
  --ks-bg-alt: #101012;
  --ks-surface: #17171a;
  --ks-ink: #f6f6f5;
  --ks-ink-muted: #a5a5a2;
  --ks-ink-faint: #7d7d7a;
  --ks-rule: #26262a;
  --ks-accent: #b9c78d;
  --ks-focus: #9cc2ff;

  --ks-chip-shipped-bg: #16301f;
  --ks-chip-shipped-ink: #9fe0b5;
  --ks-chip-planned-bg: #2e2716;
  --ks-chip-planned-ink: #e4cc92;

  --ks-font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;

  /* Fluid editorial scale */
  --ks-step--1: 0.8125rem;
  --ks-step-0: 1.0625rem;
  --ks-step-1: clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --ks-step-2: clamp(1.5rem, 1.25rem + 1.2vw, 2.25rem);
  --ks-step-3: clamp(2rem, 1.4rem + 3vw, 3.75rem);
  --ks-step-4: clamp(2.75rem, 1.6rem + 5.6vw, 6.5rem);

  --ks-space-1: 0.5rem;
  --ks-space-2: 1rem;
  --ks-space-3: 1.75rem;
  --ks-space-4: 3rem;
  --ks-space-5: 5rem;
  --ks-space-6: 8rem;

  --ks-gutter: 1.25rem;
  --ks-measure: 34rem;
}

@media (prefers-color-scheme: light) {
  :root {
    --ks-bg: #fbfaf8;
    --ks-bg-alt: #f3f2ee;
    --ks-surface: #ffffff;
    --ks-ink: #131315;
    --ks-ink-muted: #55555c;
    --ks-ink-faint: #6c6c73;
    --ks-rule: #e0ded8;
    --ks-accent: #56632c;
    --ks-focus: #1a5fb4;

    --ks-chip-shipped-bg: #e4f4e9;
    --ks-chip-shipped-ink: #1d5c33;
    --ks-chip-planned-bg: #f6eed9;
    --ks-chip-planned-ink: #6b5411;
  }
}

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

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

body {
  margin: 0;
  background: var(--ks-bg);
  color: var(--ks-ink);
  font-family: var(--ks-font-sans);
  font-size: var(--ks-step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--ks-focus);
  outline-offset: 3px;
  border-radius: 2px;
}

img { max-width: 100%; }

.ks-shell {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: var(--ks-gutter);
}

.ks-skip {
  position: absolute;
  left: -9999px;
}

.ks-skip:focus {
  left: var(--ks-gutter);
  top: var(--ks-space-2);
  z-index: 20;
  padding: 0.6em 1em;
  background: var(--ks-surface);
  color: var(--ks-ink);
  border-radius: 4px;
}

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

.js .ks-reveal {
  opacity: 0;
  transform: translateY(26px);
}

.js .ks-reveal {
  transition: opacity 0.85s cubic-bezier(0.22, 0.61, 0.25, 1),
              transform 0.85s cubic-bezier(0.22, 0.61, 0.25, 1);
}

.js .ks-reveal.is-visible {
  opacity: 1;
  transform: none;
}

.js .ks-reveal--delay-1 { transition-delay: 0.09s; }
.js .ks-reveal--delay-2 { transition-delay: 0.18s; }
.js .ks-reveal--delay-3 { transition-delay: 0.27s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .ks-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Masthead ------------------------------------------------------------ */

.ks-masthead {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 10;
  padding-block: 0.85rem;
  background: color-mix(in srgb, var(--ks-bg) 88%, transparent);
  border-bottom: 1px solid transparent;
  transform: translateY(-100%);
  transition: transform 0.4s ease, border-color 0.4s ease;
}

@supports (backdrop-filter: blur(8px)) {
  .ks-masthead { backdrop-filter: blur(10px); }
}

.ks-masthead.is-pinned {
  transform: none;
  border-bottom-color: var(--ks-rule);
}

.ks-masthead .ks-shell {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ks-space-2);
}

.ks-masthead__brand {
  font-size: var(--ks-step--1);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.ks-masthead__note {
  font-size: var(--ks-step--1);
  color: var(--ks-ink-faint);
  letter-spacing: 0.06em;
}

@media (prefers-reduced-motion: reduce) {
  .ks-masthead { transition: none; }
}

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

.ks-hero {
  min-height: 92svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: var(--ks-space-6) var(--ks-space-5);
  position: relative;
}

.ks-hero__eyebrow {
  margin: 0 0 var(--ks-space-3);
  font-size: var(--ks-step--1);
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ks-accent);
}

.ks-wordmark {
  margin: 0;
  font-size: var(--ks-step-4);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.ks-wordmark__second {
  display: block;
  color: var(--ks-accent);
}

.ks-hero__statement {
  margin: var(--ks-space-4) 0 0;
  max-width: 30rem;
  font-size: var(--ks-step-1);
  line-height: 1.45;
  color: var(--ks-ink-muted);
  text-wrap: balance;
}

.ks-hero__meta {
  margin: var(--ks-space-4) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--ks-space-1) var(--ks-space-3);
  font-size: var(--ks-step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ks-ink-faint);
}

/* --- Sections ------------------------------------------------------------ */

.ks-section {
  padding-block: var(--ks-space-5);
  border-top: 1px solid var(--ks-rule);
}

.ks-section--alt { background: var(--ks-bg-alt); }

.ks-label {
  margin: 0 0 var(--ks-space-3);
  font-size: var(--ks-step--1);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ks-ink-faint);
}

.ks-statement {
  margin: 0 0 var(--ks-space-3);
  max-width: 24ch;
  font-size: var(--ks-step-2);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.ks-statement em {
  font-style: normal;
  color: var(--ks-accent);
}

.ks-prose {
  margin: 0 0 var(--ks-space-2);
  max-width: var(--ks-measure);
  color: var(--ks-ink-muted);
}

.ks-prose:last-child { margin-bottom: 0; }

.ks-prose strong {
  color: var(--ks-ink);
  font-weight: 600;
}

/* --- Release ------------------------------------------------------------- */

.ks-release__head { margin-bottom: var(--ks-space-4); }

.ks-release__index {
  margin: 0;
  font-size: var(--ks-step--1);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ks-accent);
}

.ks-release__title {
  margin: var(--ks-space-1) 0 var(--ks-space-2);
  font-size: var(--ks-step-3);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.ks-chip {
  display: inline-block;
  padding: 0.3em 0.85em;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ks-chip--shipped {
  background: var(--ks-chip-shipped-bg);
  color: var(--ks-chip-shipped-ink);
}

.ks-chip--planned {
  background: var(--ks-chip-planned-bg);
  color: var(--ks-chip-planned-ink);
}

/* --- Figures ------------------------------------------------------------- */

.ks-figure { margin: var(--ks-space-4) 0 0; }

.ks-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  background: var(--ks-surface);
}

.ks-figure__caption {
  margin-top: var(--ks-space-2);
  max-width: 28rem;
  font-size: var(--ks-step--1);
  line-height: 1.5;
  color: var(--ks-ink-faint);
}

.ks-figure--bleed {
  margin-inline: calc(var(--ks-gutter) * -1);
}

.ks-figure--bleed img { border-radius: 0; }

.ks-figure--bleed .ks-figure__caption { padding-inline: var(--ks-gutter); }

/* --- Spec list ----------------------------------------------------------- */

.ks-spec {
  margin: var(--ks-space-4) 0 0;
  padding: 0;
  border-top: 1px solid var(--ks-rule);
}

.ks-spec__row {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding-block: var(--ks-space-2);
  border-bottom: 1px solid var(--ks-rule);
}

.ks-spec__key {
  font-size: var(--ks-step--1);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ks-accent);
}

.ks-spec__val {
  margin: 0;
  color: var(--ks-ink);
}

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

.ks-footer {
  border-top: 1px solid var(--ks-rule);
  padding-block: var(--ks-space-4) var(--ks-space-5);
  font-size: var(--ks-step--1);
  color: var(--ks-ink-muted);
}

.ks-footer p { margin: 0 0 var(--ks-space-1); }

.ks-footer a {
  color: var(--ks-ink);
  text-decoration-color: var(--ks-rule);
  text-underline-offset: 0.3em;
}

.ks-footer a:hover { text-decoration-color: currentColor; }

/* --- Wider viewports ----------------------------------------------------- */

@media (min-width: 48em) {
  :root { --ks-gutter: 2.5rem; }

  .ks-section { padding-block: var(--ks-space-6); }

  .ks-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: var(--ks-space-5);
    align-items: start;
  }

  .ks-split__sticky {
    position: sticky;
    top: 6rem;
  }

  .ks-figure { margin-top: 0; }

  .ks-figure--bleed { margin-inline: 0; }

  .ks-figure--bleed img { border-radius: 4px; }

  .ks-figure--bleed .ks-figure__caption { padding-inline: 0; }

  .ks-spec__row {
    flex-direction: row;
    align-items: baseline;
    gap: var(--ks-space-3);
  }

  .ks-spec__key { flex: 0 0 9.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ks-split__sticky { position: static; }
}