/* ==========================================================================
   MAREN VOSS — PORTFOLIO DESIGN SYSTEM
   Editorial-premium visual language for startup-facing product design work.
   ========================================================================== */

/* ---------- 1. Fonts ---------- */
@font-face {
  font-family: 'Fraunces';
  src: local('Fraunces');
  font-display: swap;
}

/* ---------- 2. Tokens ---------- */
:root {
  /* Typography */
  --font-display: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --fs-display-xl: clamp(2.75rem, 3.4vw + 1.6rem, 6.25rem);
  --fs-display-l: clamp(2.25rem, 2.6vw + 1.4rem, 4.25rem);
  --fs-display-m: clamp(1.75rem, 1.6vw + 1.2rem, 2.75rem);
  --fs-display-s: clamp(1.375rem, 0.9vw + 1.05rem, 1.75rem);
  --fs-body-l: clamp(1.125rem, 0.3vw + 1.03rem, 1.3125rem);
  --fs-body-m: 1.0625rem;
  --fs-body-s: 0.9375rem;
  --fs-body-xs: 0.8125rem;
  --fs-eyebrow: 0.8125rem;

  --lh-tight: 1.05;
  --lh-snug: 1.25;
  --lh-normal: 1.55;
  --lh-relaxed: 1.7;

  --tracking-tight: -0.03em;
  --tracking-snug: -0.01em;
  --tracking-wide: 0.08em;
  --tracking-wider: 0.14em;

  /* Spacing (8px rhythm, fluid at section scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;
  --space-section: clamp(4.5rem, 6vw + 2rem, 9rem);
  --space-section-tight: clamp(3rem, 4vw + 1.5rem, 6rem);

  --container-max: 1280px;
  --container-text: 720px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  /* Radius — restrained, mostly sharp */
  --radius-xs: 2px;
  --radius-s: 4px;
  --radius-m: 6px;
  --radius-l: 10px;
  --radius-pill: 999px;

  /* Motion */
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-slow: 480ms;
  --dur-slower: 720ms;

  /* Elevation — border-led, whisper shadows */
  --shadow-s: 0 1px 2px rgba(20, 19, 15, 0.06);
  --shadow-m: 0 6px 24px -8px rgba(20, 19, 15, 0.14);
  --shadow-l: 0 20px 60px -16px rgba(20, 19, 15, 0.22);

  color-scheme: light;

  /* Light palette — warm neutral ground, single ochre accent */
  --c-bg: #F7F5F0;
  --c-bg-raised: #FFFFFF;
  --c-bg-sunken: #EFEBE3;
  --c-ink: #17140F;
  --c-ink-soft: #4A473F;
  --c-ink-faint: #6E6A5C;
  --c-border: rgba(23, 20, 15, 0.11);
  --c-border-strong: rgba(23, 20, 15, 0.22);
  --c-accent: #B4552E;
  --c-accent-ink: #FFF6EF;
  --c-accent-soft: #F1DCC9;
  --c-focus: #1D5FBF;
  --c-overlay: rgba(23, 20, 15, 0.5);
  --c-nav-bg: rgba(247, 245, 240, 0.78);

  --grain-opacity: 0.035;
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --c-bg: #131210;
  --c-bg-raised: #1B1917;
  --c-bg-sunken: #0D0C0B;
  --c-ink: #F4F1EA;
  --c-ink-soft: #C7C2B6;
  --c-ink-faint: #8B8779;
  --c-border: rgba(244, 241, 234, 0.13);
  --c-border-strong: rgba(244, 241, 234, 0.26);
  --c-accent: #E08347;
  --c-accent-ink: #1F1108;
  --c-accent-soft: #3A2418;
  --c-focus: #6FA3F5;
  --c-overlay: rgba(9, 8, 7, 0.65);
  --c-nav-bg: rgba(19, 18, 16, 0.72);
  --grain-opacity: 0.05;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --c-bg: #131210;
    --c-bg-raised: #1B1917;
    --c-bg-sunken: #0D0C0B;
    --c-ink: #F4F1EA;
    --c-ink-soft: #C7C2B6;
    --c-ink-faint: #8B8779;
    --c-border: rgba(244, 241, 234, 0.13);
    --c-border-strong: rgba(244, 241, 234, 0.26);
    --c-accent: #E08347;
    --c-accent-ink: #1F1108;
    --c-accent-soft: #3A2418;
    --c-focus: #6FA3F5;
    --c-overlay: rgba(9, 8, 7, 0.65);
    --c-nav-bg: rgba(19, 18, 16, 0.72);
    --grain-opacity: 0.05;
  }
}

/* ---------- 3. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body { height: 100%; }
body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-ink);
  font-size: var(--fs-body-m);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--dur-slow) var(--ease-premium), color var(--dur-slow) var(--ease-premium);
  overflow-x: hidden;
}
img, picture, svg, video { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
h1, h2, h3, h4, h5, h6 { font-weight: inherit; }

@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;
    scroll-behavior: auto !important;
  }
}

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

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

.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-4);
  z-index: 999;
  background: var(--c-ink);
  color: var(--c-bg);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-s);
  transition: top var(--dur-base) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); }

/* ---------- 4. Typography ---------- */
.font-display { font-family: var(--font-display); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--c-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.eyebrow::before {
  content: '';
  width: 20px;
  height: 1px;
  background: currentColor;
  display: inline-block;
}
.eyebrow.no-rule::before { display: none; }

h1, .h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 480;
  font-size: var(--fs-display-xl);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
}
h2, .h2 {
  font-family: var(--font-display);
  font-weight: 460;
  font-size: var(--fs-display-l);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
}
h3, .h3 {
  font-family: var(--font-display);
  font-weight: 460;
  font-size: var(--fs-display-m);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-snug);
}
h4, .h4 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-display-s);
  line-height: var(--lh-snug);
}
.text-l { font-size: var(--fs-body-l); line-height: var(--lh-relaxed); color: var(--c-ink-soft); }
.text-m { font-size: var(--fs-body-m); color: var(--c-ink-soft); }
.text-s { font-size: var(--fs-body-s); color: var(--c-ink-faint); }
.text-xs { font-size: var(--fs-body-xs); color: var(--c-ink-faint); }
.text-mono { font-family: var(--font-mono); }
.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }

/* ---------- 5. Layout ---------- */
.wrap {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap-text { max-width: var(--container-text); }
section { position: relative; }
.section-pad { padding-block: var(--space-section); }
.section-pad-tight { padding-block: var(--space-section-tight); }
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.section-head-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.grid { display: grid; gap: var(--space-6); }
.hairline {
  border: none;
  border-top: 1px solid var(--c-border);
}
.vhairline { width: 1px; align-self: stretch; background: var(--c-border); }

/* ---------- 6. Buttons & links ---------- */
.btn {
  --btn-bg: var(--c-ink);
  --btn-fg: var(--c-bg);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--fs-body-s);
  font-weight: 600;
  letter-spacing: var(--tracking-snug);
  padding: 0.95rem 1.6rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  border-radius: var(--radius-s);
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: color var(--dur-base) var(--ease-premium), border-color var(--dur-base) var(--ease-premium), transform var(--dur-fast) var(--ease-out);
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c-accent);
  transform: translateY(102%);
  transition: transform var(--dur-slow) var(--ease-premium);
  z-index: -1;
}
.btn:hover::before, .btn:focus-visible::before { transform: translateY(0); }
.btn:hover, .btn:focus-visible { border-color: var(--c-accent); }
.btn:active { transform: scale(0.97); }
.btn svg { width: 16px; height: 16px; transition: transform var(--dur-base) var(--ease-premium); }
.btn:hover svg { transform: translate(3px, -3px); }

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--c-ink);
  border-color: var(--c-border-strong);
}
.btn-ghost::before { background: var(--c-ink); }
.btn-ghost:hover { --btn-fg: var(--c-bg); border-color: var(--c-ink); }
[data-theme='dark'] .btn-ghost:hover, .btn-ghost:hover { color: var(--c-bg); }

.link-underline {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--dur-slow) var(--ease-premium);
}
.link-underline:hover, .link-underline:focus-visible { background-size: 100% 1px; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--fs-body-s);
  color: var(--c-ink);
}
.text-link svg { width: 14px; height: 14px; transition: transform var(--dur-base) var(--ease-premium); }
.text-link:hover svg { transform: translate(3px, -3px); }

/* ---------- 7. Navigation ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding-block: var(--space-4);
  background: var(--c-nav-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: transform var(--dur-slow) var(--ease-premium), border-color var(--dur-base) var(--ease-premium), background-color var(--dur-base);
}
.site-nav.is-scrolled { border-color: var(--c-border); }
.site-nav.is-hidden { transform: translateY(-100%); }
.nav-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }
.brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 600; letter-spacing: var(--tracking-snug); }
.brand-mark { width: 34px; height: 34px; color: var(--c-ink); flex-shrink: 0; }
.brand-mark path, .brand-mark circle { transition: stroke-dashoffset var(--dur-slow) var(--ease-premium); }
.brand-name { font-family: var(--font-display); font-size: 1.05rem; }
.brand-role { display: block; font-family: var(--font-mono); font-size: 0.6875rem; color: var(--c-ink-faint); letter-spacing: var(--tracking-wide); text-transform: uppercase; margin-top: 1px; }

.nav-links { display: flex; align-items: center; gap: var(--space-7); }
.nav-links a {
  position: relative;
  font-size: var(--fs-body-s);
  font-weight: 500;
  color: var(--c-ink-soft);
  padding-block: var(--space-1);
  transition: color var(--dur-base) var(--ease-premium);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-base) var(--ease-premium);
}
.nav-links a:hover, .nav-links a[aria-current='true'] { color: var(--c-ink); }
.nav-links a:hover::after, .nav-links a[aria-current='true']::after { transform: scaleX(1); transform-origin: left; }

.nav-actions { display: flex; align-items: center; gap: var(--space-4); }

.nav-cta { padding: 0.7rem 1.2rem; font-size: var(--fs-body-xs); white-space: nowrap; }

.theme-toggle {
  position: relative;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--c-border-strong);
  background: transparent;
  cursor: pointer;
  transition: border-color var(--dur-base), background-color var(--dur-base);
}
.theme-toggle:hover { border-color: var(--c-accent); background: var(--c-accent-soft); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme='dark'] .theme-toggle .icon-moon { display: none; }
[data-theme='dark'] .theme-toggle .icon-sun { display: block; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--c-border-strong);
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 210;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  width: 16px; height: 1px;
  background: var(--c-ink);
  transform: translate(-50%, -50%);
  transition: transform var(--dur-base) var(--ease-premium), opacity var(--dur-base);
}
.nav-toggle span::before { transform: translateY(-5px); top: 50%; left: 0; }
.nav-toggle span::after { transform: translateY(5px); top: 50%; left: 0; }
.nav-toggle span::before, .nav-toggle span::after { position: absolute; }
.nav-toggle[aria-expanded='true'] span { background: transparent; }
.nav-toggle[aria-expanded='true'] span::before { transform: rotate(45deg); }
.nav-toggle[aria-expanded='true'] span::after { transform: rotate(-45deg); }

.nav-progress {
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px;
  background: var(--c-accent);
  width: 0%;
}

.mobile-panel {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--c-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  justify-content: safe center;
  padding: var(--space-8) var(--gutter);
  padding-top: calc(var(--nav-h, 5rem) + var(--space-5) + env(safe-area-inset-top, 0px));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-premium), transform var(--dur-base) var(--ease-premium);
}
.mobile-panel.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-panel nav { display: flex; flex-direction: column; gap: var(--space-5); }
.mobile-panel a { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 3rem); }
.mobile-panel .mobile-foot { margin-top: var(--space-9); margin-bottom: var(--space-4); display: flex; gap: var(--space-6); flex-wrap: wrap; }
.mobile-panel .mobile-foot a { display: block; overflow-wrap: break-word; min-width: 0; max-width: 100%; }

@media (max-height: 640px) {
  .mobile-panel nav { gap: var(--space-3); }
  .mobile-panel a { font-size: clamp(1.5rem, 7vw, 2.25rem); }
  .mobile-panel .mobile-foot { margin-top: var(--space-6); }
}

/* ---------- 8. Hero — quiet, centered, typographic ----------
   Apple-style minimalism: one thesis statement, huge whitespace, a single
   warm tonal shift (bg-sunken) instead of a hard color break, and the
   accent reserved for the smallest possible marks so it never competes
   with the headline for attention. */
.hero {
  min-height: 86vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: clamp(8rem, 10vw, 10rem);
  padding-bottom: clamp(4rem, 6vw, 6rem);
  background: var(--c-bg-sunken);
  position: relative;
}
.hero-inner { max-width: 860px; margin-inline: auto; display: flex; flex-direction: column; align-items: center; }
.hero-kicker { margin-bottom: var(--space-6); justify-content: center; }
.hero-headline {
  max-width: 15ch;
  font-size: clamp(2.75rem, 4.6vw + 1.4rem, 5.25rem);
  color: var(--c-ink-soft);
  font-weight: 460;
}
.hero-sub {
  margin-top: var(--space-6);
  max-width: 42ch;
  margin-inline: auto;
}
.hero-actions {
  margin-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.hero-meta-line {
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--fs-body-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--c-ink-faint);
}
.hero-meta-line span + span::before { content: '·'; margin-inline: var(--space-3); color: var(--c-border-strong); }

.hero-scrollcue {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--c-ink-faint);
  opacity: 0.75;
  transition: opacity var(--dur-base) var(--ease-premium);
}
.hero-scrollcue:hover { opacity: 1; color: var(--c-ink); }
.hero-scrollcue svg { width: 14px; height: 14px; animation: hero-bob 2.4s var(--ease-in-out) infinite; }
@keyframes hero-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
@media (prefers-reduced-motion: reduce) { .hero-scrollcue svg { animation: none; } }

@media (max-width: 560px) {
  .hero { min-height: auto; padding-top: clamp(6.5rem, 16vw, 8rem); }
}

.marquee {
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  overflow: hidden;
  padding-block: var(--space-5);
}
.marquee-track {
  display: flex;
  gap: var(--space-9);
  width: max-content;
  animation: marquee 32s linear infinite;
}
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee-item {
  font-family: var(--font-mono);
  font-size: var(--fs-body-s);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--c-ink-faint);
  display: flex;
  align-items: center;
  gap: var(--space-9);
  white-space: nowrap;
}
.marquee-item strong { color: var(--c-ink-soft); font-weight: 600; }
.marquee-item .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--c-border-strong); }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- 9. Reveal animation ----------
   Gated behind .js-reveal (added by JS only once IntersectionObserver is
   confirmed available). If JS fails to load or run, [data-reveal] elements
   have no opacity rule applied and remain fully visible by default — the
   page fails open, never closed. */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slower) var(--ease-out), transform var(--dur-slower) var(--ease-out);
}
.js-reveal [data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-group] > * { transition-delay: calc(var(--i, 0) * 90ms); }
@media (prefers-reduced-motion: reduce) {
  .js-reveal [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ---------- 10. About ---------- */
.about-grid {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: start;
}
.about-lede { font-family: var(--font-display); font-size: var(--fs-display-s); line-height: var(--lh-snug); letter-spacing: var(--tracking-snug); }
.about-body { margin-top: var(--space-6); max-width: 56ch; }
.about-body p + p { margin-top: var(--space-4); }
.about-list { margin-top: var(--space-7); display: grid; gap: var(--space-5); }
.about-list li { display: grid; grid-template-columns: auto 1fr; gap: var(--space-4); align-items: start; }
.about-list .num { font-family: var(--font-mono); font-size: var(--fs-body-s); color: var(--c-accent); padding-top: 2px; }
.about-list h4 { margin-bottom: var(--space-1); }

.stat-card {
  background: var(--c-bg-raised);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-l);
  padding: var(--space-7);
}
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.stat-grid .stat-num { font-family: var(--font-display); font-size: clamp(2rem, 2.4vw, 2.75rem); letter-spacing: var(--tracking-tight); }
.stat-grid .stat-num sup { font-size: 0.5em; top: -0.6em; color: var(--c-accent); }
.stat-grid .stat-label { margin-top: var(--space-2); font-size: var(--fs-body-xs); color: var(--c-ink-faint); text-transform: uppercase; letter-spacing: var(--tracking-wide); }
.pull-quote {
  margin-top: var(--space-7);
  padding-top: var(--space-7);
  border-top: 1px solid var(--c-border);
  font-family: var(--font-display);
  font-size: var(--fs-display-s);
  line-height: var(--lh-snug);
}
.pull-quote cite { display: block; margin-top: var(--space-4); font-family: var(--font-mono); font-style: normal; font-size: var(--fs-body-xs); color: var(--c-ink-faint); text-transform: uppercase; letter-spacing: var(--tracking-wide); }

/* ---------- 11. Case studies (featured) ---------- */
.case-list { display: flex; flex-direction: column; }
.case-card {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--space-6);
  padding-block: var(--space-8);
  border-top: 1px solid var(--c-border);
  text-decoration: none;
  color: inherit;
  position: relative;
}
.case-list .case-card:last-child { border-bottom: 1px solid var(--c-border); }
.case-index { font-family: var(--font-mono); font-size: var(--fs-body-s); color: var(--c-ink-faint); padding-top: var(--space-1); }
.case-body { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-8); align-items: center; }
.case-copy .case-tags { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-4); }
.tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-pill);
  color: var(--c-ink-faint);
}
.case-copy h3 { transition: color var(--dur-base) var(--ease-premium); }
.case-card:hover .case-copy h3 { color: var(--c-accent); }
.case-copy p { margin-top: var(--space-3); max-width: 48ch; }
.case-meta { margin-top: var(--space-5); display: flex; gap: var(--space-6); flex-wrap: wrap; }
.case-meta div dt { font-family: var(--font-mono); font-size: 0.6875rem; text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--c-ink-faint); }
.case-meta div dd { margin-top: var(--space-1); font-weight: 600; font-size: var(--fs-body-s); }
.case-cta { margin-top: var(--space-6); }

.case-visual {
  aspect-ratio: 5/4;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--c-border);
  position: relative;
  background: var(--c-bg-sunken);
}
.case-visual svg { width: 100%; height: 100%; transition: transform var(--dur-slower) var(--ease-premium); }
.case-card:hover .case-visual svg { transform: scale(1.045); }
.case-visual::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.08));
  pointer-events: none;
}

@media (min-width: 900px) {
  .case-card { padding-block: var(--space-9); }
}

/* ---------- 12. Selected work archive ---------- */
.archive-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.archive-card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-l);
  padding: var(--space-6);
  background: var(--c-bg-raised);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: border-color var(--dur-base) var(--ease-premium), transform var(--dur-base) var(--ease-premium), box-shadow var(--dur-base) var(--ease-premium);
}
.archive-card:hover { border-color: var(--c-border-strong); transform: translateY(-4px); box-shadow: var(--shadow-m); }
.archive-thumb { aspect-ratio: 16/10; border-radius: var(--radius-m); overflow: hidden; background: var(--c-bg-sunken); border: 1px solid var(--c-border); }
.archive-thumb svg { width: 100%; height: 100%; }
.archive-card h4 { display: flex; justify-content: space-between; gap: var(--space-3); align-items: baseline; }
.archive-card h4 span.yr { font-family: var(--font-mono); font-size: var(--fs-body-xs); color: var(--c-ink-faint); font-weight: 400; }
.archive-card .role { font-size: var(--fs-body-s); color: var(--c-ink-faint); }
.archive-card .tags { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- 13. Process ---------- */
.process-list { counter-reset: step; }
.process-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-6);
  padding-block: var(--space-7);
  border-top: 1px solid var(--c-border);
  position: relative;
}
.process-list .process-item:last-child { border-bottom: 1px solid var(--c-border); }
.process-num { font-family: var(--font-mono); font-size: var(--fs-body-m); color: var(--c-accent); }
.process-content { display: grid; grid-template-columns: 1fr; gap: var(--space-3); }
.process-content h3 { transition: transform var(--dur-base) var(--ease-premium); }
.process-item:hover .process-content h3 { transform: translateX(6px); }
.process-content p { max-width: 60ch; }
.process-detail {
  margin-top: var(--space-2);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (min-width: 900px) {
  .process-content { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

/* ---------- 14. Credibility / logos ---------- */
.credibility-grid {
  grid-template-columns: repeat(2, 1fr);
}
.logo-grid {
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--c-border);
  border-left: 1px solid var(--c-border);
}
.logo-cell {
  border-right: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-7) var(--space-5);
  display: grid;
  place-items: center;
  min-height: 110px;
}
.logo-cell svg { height: 22px; width: auto; color: var(--c-ink-faint); transition: color var(--dur-base); }
.logo-cell:hover svg { color: var(--c-ink); }

.credibility-copy .about-list { margin-top: var(--space-6); }

/* ---------- 16. Contact / CTA ---------- */
.contact-section {
  background: var(--c-ink);
  color: var(--c-bg);
  border-radius: var(--radius-l);
  margin-inline: var(--gutter);
  padding: clamp(3rem, 6vw, 6rem) clamp(1.5rem, 5vw, 5rem);
  position: relative;
  overflow: hidden;
}
[data-theme='dark'] .contact-section { background: var(--c-bg-raised); border: 1px solid var(--c-border-strong); }
.contact-section .eyebrow { color: var(--c-accent); }
.contact-headline { max-width: 20ch; color: var(--c-bg); }
[data-theme='dark'] .contact-headline { color: var(--c-ink); }
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-8); align-items: end; }
.contact-sub { margin-top: var(--space-5); max-width: 48ch; color: rgba(247,245,240,0.72); }
[data-theme='dark'] .contact-sub { color: var(--c-ink-soft); }
.contact-actions { display: flex; flex-direction: row; flex-wrap: wrap; gap: var(--space-5); align-items: center; }
.contact-section .btn { --btn-bg: var(--c-bg); --btn-fg: var(--c-ink); }
[data-theme='dark'] .contact-section .btn { --btn-bg: var(--c-ink); --btn-fg: var(--c-bg); }
.contact-section .btn::before { background: var(--c-accent); }
.contact-section .btn-ghost { --btn-bg: transparent; --btn-fg: var(--c-bg); border-color: rgba(247,245,240,0.35); }
.contact-section .btn-ghost::before { background: var(--c-bg); }
.contact-section .btn-ghost:hover { --btn-fg: var(--c-ink); border-color: var(--c-bg); }
[data-theme='dark'] .contact-section .btn-ghost { --btn-bg: transparent; --btn-fg: var(--c-ink); border-color: var(--c-border-strong); }
[data-theme='dark'] .contact-section .btn-ghost::before { background: var(--c-ink); }
[data-theme='dark'] .contact-section .btn-ghost:hover { --btn-fg: var(--c-bg); }
.contact-details { display: flex; flex-direction: column; gap: var(--space-4); }
.contact-details a { color: rgba(247,245,240,0.85); font-size: var(--fs-body-s); display: inline-flex; align-items: center; gap: var(--space-2); }
[data-theme='dark'] .contact-details a { color: var(--c-ink-soft); }
.contact-details a:hover { color: var(--c-bg); }
[data-theme='dark'] .contact-details a:hover { color: var(--c-ink); }
.contact-social { display: flex; gap: var(--space-4); margin-top: var(--space-2); }
.contact-social a { width: 40px; height: 40px; border-radius: 50%; border: 1px solid rgba(247,245,240,0.24); display: grid; place-items: center; transition: border-color var(--dur-base), background-color var(--dur-base); }
[data-theme='dark'] .contact-social a { border-color: var(--c-border-strong); }
.contact-social a:hover { border-color: var(--c-accent); background: rgba(180,85,46,0.18); }
.contact-social svg { width: 16px; height: 16px; }

.contact-form {
  margin-top: var(--space-9);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(247,245,240,0.16);
  max-width: 640px;
}
[data-theme='dark'] .contact-form { border-top-color: var(--c-border); }
.contact-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.contact-field { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-5); }
.contact-form-row .contact-field { margin-top: 0; }
.contact-field label {
  font-family: var(--font-mono);
  font-size: var(--fs-body-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: rgba(247,245,240,0.6);
}
[data-theme='dark'] .contact-field label { color: var(--c-ink-faint); }
.contact-field input, .contact-field textarea {
  background: rgba(247,245,240,0.06);
  border: 1px solid rgba(247,245,240,0.22);
  border-radius: var(--radius-s);
  padding: 0.75rem 1rem;
  color: var(--c-bg);
  font-family: var(--font-body);
  font-size: var(--fs-body-m);
  resize: vertical;
  transition: border-color var(--dur-base) var(--ease-premium);
}
.contact-field input::placeholder, .contact-field textarea::placeholder { color: rgba(247,245,240,0.4); }
.contact-field input:focus, .contact-field textarea:focus { border-color: var(--c-accent); }
[data-theme='dark'] .contact-field input, [data-theme='dark'] .contact-field textarea {
  background: var(--c-bg);
  border-color: var(--c-border-strong);
  color: var(--c-ink);
}
[data-theme='dark'] .contact-field input::placeholder, [data-theme='dark'] .contact-field textarea::placeholder { color: var(--c-ink-faint); }
.contact-form .btn { margin-top: var(--space-6); }

/* ---------- 17. Footer ---------- */
.site-footer { padding-block: var(--space-9) var(--space-7); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-8); padding-bottom: var(--space-8); }
.footer-brand p { margin-top: var(--space-4); max-width: 34ch; }
.footer-col h5 { font-family: var(--font-mono); font-size: var(--fs-body-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--c-ink-faint); margin-bottom: var(--space-4); }
.footer-col ul { display: grid; gap: var(--space-3); }
.footer-col a { font-size: var(--fs-body-s); color: var(--c-ink-soft); }
.footer-col a:hover { color: var(--c-ink); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-6); border-top: 1px solid var(--c-border); gap: var(--space-4); flex-wrap: wrap; }
.footer-bottom .text-xs { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.back-to-top { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--fs-body-xs); color: var(--c-ink-faint); }
.back-to-top svg { width: 14px; height: 14px; transition: transform var(--dur-base) var(--ease-premium); }
.back-to-top:hover svg { transform: translateY(-3px); }

/* ---------- 18. Case study detail page ---------- */
.cs-hero { padding-top: clamp(7rem, 10vw, 9rem); padding-bottom: var(--space-8); }
.cs-hero-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-8); }
.cs-hero-meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--c-border); }
.cs-hero-meta dt { font-family: var(--font-mono); font-size: var(--fs-body-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--c-ink-faint); }
.cs-hero-meta dd { margin-top: var(--space-2); font-weight: 600; }
.cs-cover { margin-top: var(--space-8); border-radius: var(--radius-l); overflow: hidden; border: 1px solid var(--c-border); aspect-ratio: 16/9; background: var(--c-bg-sunken); }
.cs-cover svg { width: 100%; height: 100%; }

.cs-body { display: grid; grid-template-columns: 200px 1fr; gap: var(--space-9); align-items: start; }
.cs-toc { position: sticky; top: 7rem; display: flex; flex-direction: column; gap: var(--space-3); }
.cs-toc a { font-size: var(--fs-body-xs); text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--c-ink-faint); font-family: var(--font-mono); padding-left: var(--space-3); border-left: 2px solid transparent; transition: color var(--dur-base), border-color var(--dur-base); }
.cs-toc a:hover, .cs-toc a.is-active { color: var(--c-ink); border-color: var(--c-accent); }

.cs-block { padding-block: var(--space-8); border-top: 1px solid var(--c-border); }
.cs-block:first-child { border-top: none; padding-top: 0; }
.cs-block h2 { max-width: 24ch; }
.cs-block .text-l { margin-top: var(--space-5); max-width: 68ch; }
.cs-block p + p { margin-top: var(--space-4); }
.cs-cols { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--space-6); margin-top: var(--space-6); }
.cs-cols .cs-col { border: 1px solid var(--c-border); border-radius: var(--radius-l); padding: var(--space-6); background: var(--c-bg-raised); }
.cs-cols .cs-col h4 { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-3); }
.cs-cols .cs-col h4 .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); }
.cs-image { margin-top: var(--space-7); border-radius: var(--radius-l); overflow: hidden; border: 1px solid var(--c-border); background: var(--c-bg-sunken); }
.cs-image svg { width: 100%; height: auto; display: block; }
.cs-image figcaption { padding: var(--space-4) var(--space-5); font-family: var(--font-mono); font-size: var(--fs-body-xs); color: var(--c-ink-faint); border-top: 1px solid var(--c-border); }
.cs-outcome-grid { grid-template-columns: repeat(3, 1fr); margin-top: var(--space-6); }
.cs-outcome { border: 1px solid var(--c-border); border-radius: var(--radius-l); padding: var(--space-6); }
.cs-outcome .stat-num { font-family: var(--font-display); font-size: 2.25rem; }
.cs-outcome .stat-label { margin-top: var(--space-2); font-size: var(--fs-body-s); color: var(--c-ink-faint); }
.cs-list { display: grid; gap: var(--space-3); margin-top: var(--space-5); }
.cs-list li { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--fs-body-m); color: var(--c-ink-soft); }
.cs-list li svg { width: 16px; height: 16px; margin-top: 4px; flex-shrink: 0; color: var(--c-accent); }

.cs-next { padding-block: var(--space-9); border-top: 1px solid var(--c-border); }
.cs-next a { display: grid; gap: var(--space-2); }
.cs-next .eyebrow { margin-bottom: var(--space-2); }
.cs-next h3 { max-width: 20ch; transition: transform var(--dur-base) var(--ease-premium); }
.cs-next a:hover h3 { transform: translateX(8px); color: var(--c-accent); }

/* ---------- 19. Responsive ---------- */
@media (max-width: 1080px) {
  .about-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .credibility-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .cs-body { grid-template-columns: 1fr; }
  .cs-toc { position: static; flex-direction: row; flex-wrap: wrap; gap: var(--space-5); padding-bottom: var(--space-6); border-bottom: 1px solid var(--c-border); }
  .cs-toc a { border-left: none; border-bottom: 2px solid transparent; padding-left: 0; padding-bottom: 4px; }
  .cs-toc a:hover, .cs-toc a.is-active { border-color: var(--c-accent); }
}

@media (max-width: 900px) {
  .case-body { grid-template-columns: 1fr; }
  .case-visual { order: -1; aspect-ratio: 16/10; }
  .case-card { grid-template-columns: 40px 1fr; }
  .process-item { grid-template-columns: 40px 1fr; }
  .cs-outcome-grid { grid-template-columns: 1fr; }
  .cs-hero-meta { grid-template-columns: 1fr 1fr; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 780px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-row { flex-wrap: wrap; row-gap: var(--space-2); gap: var(--space-3); }
  .nav-actions { gap: var(--space-2); }
  .brand-mark { width: 28px; height: 28px; }
  .nav-cta { padding: 0.55rem 0.85rem; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form-row { grid-template-columns: 1fr; }
  .contact-actions { flex-direction: column; align-items: stretch; }
  .contact-actions .btn { justify-content: center; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .contact-section { margin-inline: var(--space-4); }
}

@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn, .hero-actions .text-link { justify-content: center; }
}

/* ---------- 20. Utility ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.no-scroll { overflow: hidden; }
[data-cursor-glow] { position: fixed; width: 420px; height: 420px; border-radius: 50%; pointer-events: none; z-index: 1; opacity: 0; transition: opacity var(--dur-base); background: radial-gradient(circle, var(--c-accent-soft), transparent 70%); filter: blur(10px); mix-blend-mode: var(--glow-blend, normal); }