/* ============================================================
   WEBCRAFT STUDIO — DESIGN SYSTEM
   One system for the homepage and case studies.
   Paper ground, ink type, one accent, hairline structure.
   ============================================================ */

:root {
  --paper: #FAFAF8;
  --paper-2: #F3F2ED;
  --white: #FFFFFF;
  --ink: #171613;
  --ink-2: #3B3934;
  --muted: #6F6C63;
  --line: #E5E3DB;
  --accent: #B5471D;
  --dark: #141310;
  --dark-2: #1D1C18;
  --dark-line: rgba(250, 250, 248, 0.14);
  --dark-muted: rgba(250, 250, 248, 0.62);

  --font-display: 'Inter Tight', 'Inter', Arial, sans-serif;
  --font-body: 'Inter', Arial, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --wrap: 1240px;
  --gutter: 32px;
  --sec: clamp(88px, 12vw, 152px);

  --ease: cubic-bezier(0.22, 0.61, 0.21, 1);
}

/* ---------- Base ---------- */

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
}

p { margin: 0; }

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

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding-top: var(--sec); padding-bottom: var(--sec); }
.section--tight { padding-top: calc(var(--sec) * 0.7); padding-bottom: calc(var(--sec) * 0.7); }

/* ---------- Type system ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 14px;
}

.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
  flex: none;
}

.h-display {
  font-size: clamp(2.6rem, 5.6vw, 4.6rem);
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.h-section {
  font-size: clamp(2rem, 3.6vw, 3.1rem);
  letter-spacing: -0.03em;
  line-height: 1.06;
}

.serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 56ch;
}

.body-muted { color: var(--muted); }

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 15px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.btn .btn-arrow { transition: transform 0.3s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--accent); }

.btn--ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }

.btn--light { background: var(--paper); color: var(--ink); }
.btn--light:hover { background: var(--accent); color: var(--paper); }

.btn--outline-light { border-color: var(--dark-line); color: var(--paper); background: transparent; }
.btn--outline-light:hover { border-color: var(--paper); }

/* Text link with arrow */
.tlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.tlink:hover { color: var(--accent); border-color: var(--accent); }

.tlink .tlink-arrow { transition: transform 0.3s var(--ease); }
.tlink:hover .tlink-arrow { transform: translateX(3px); }

/* ---------- Navigation ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(250, 250, 248, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.nav-logo-sub {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.25s var(--ease);
}

.nav-link:hover { color: var(--ink); }

.nav-cta {
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--ink);
  color: var(--paper) !important;
  padding: 11px 22px;
  border-radius: 999px;
  transition: background 0.3s var(--ease);
}

.nav-cta:hover { background: var(--accent); color: var(--paper) !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 320;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.35s var(--ease), top 0.35s var(--ease);
}

.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { top: 26px; }

.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

/* Mobile panel */
.nav-panel {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 100px var(--gutter) 48px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease);
}

body.nav-open .nav-panel { opacity: 1; visibility: visible; }

.nav-panel-links { list-style: none; margin: 0; padding: 0; }

.nav-panel-links a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.nav-panel-links a span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.nav-panel-cta { margin-top: 36px; }

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

.hero {
  padding-top: calc(76px + clamp(56px, 9vw, 110px));
  padding-bottom: clamp(64px, 8vw, 110px);
}

.hero-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: end;
}

.hero-headline { margin-top: 28px; }

.hero-headline .serif { color: var(--accent); }

.hero-sub-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-bottom: 8px;
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-meta {
  display: flex;
  gap: 28px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.hero-meta dt { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.hero-meta dd { margin: 0; font-size: 0.88rem; font-weight: 500; }

/* Product wall */
.wall {
  margin-top: clamp(56px, 7vw, 96px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.wall-item:nth-child(2) { margin-top: clamp(28px, 4vw, 64px); }
.wall-item:nth-child(3) { margin-top: clamp(12px, 2vw, 32px); }

.wall-caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-top: 14px;
}

.wall-caption strong { font-size: 0.92rem; font-weight: 600; letter-spacing: -0.01em; }
.wall-caption span { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

/* Browser frame */
.frame {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(23, 22, 19, 0.04), 0 12px 32px -18px rgba(23, 22, 19, 0.18);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

a.frame-link { display: block; }
a.frame-link:hover .frame { transform: translateY(-4px); box-shadow: 0 2px 3px rgba(23,22,19,0.05), 0 24px 48px -20px rgba(23, 22, 19, 0.26); }

.frame-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.frame-dots { display: flex; gap: 5px; flex: none; }
.frame-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }

.frame-url {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: var(--paper-2);
  border-radius: 99px;
  padding: 3px 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.frame-img { aspect-ratio: 16 / 10; overflow: hidden; }
.frame-img img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform 0.7s var(--ease); }
a.frame-link:hover .frame-img img { transform: scale(1.025); }

/* ---------- Section headers ---------- */

.sec-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: clamp(44px, 6vw, 72px);
}

.sec-head-note { max-width: 34ch; font-size: 0.95rem; color: var(--muted); text-align: right; }

/* ---------- Work ---------- */

.work-row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
  align-items: center;
  padding: clamp(40px, 5vw, 64px) 0;
  border-top: 1px solid var(--line);
}

.work-row:last-of-type { border-bottom: 1px solid var(--line); }

.work-media { grid-column: 1 / span 7; }
.work-info { grid-column: 8 / span 5; }

.work-row--flip .work-media { grid-column: 6 / span 7; order: 2; }
.work-row--flip .work-info { grid-column: 1 / span 5; order: 1; }

.work-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  display: block;
  margin-bottom: 18px;
}

.work-client {
  font-size: clamp(1.7rem, 2.6vw, 2.3rem);
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.work-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

.work-desc { color: var(--ink-2); font-size: 1rem; max-width: 44ch; margin-bottom: 26px; }

.work-links { display: flex; flex-wrap: wrap; gap: 22px; align-items: center; }

/* Index list (secondary projects) */
.work-indexlist { margin-top: clamp(40px, 5vw, 64px); }

.work-indexrow {
  display: grid;
  grid-template-columns: 56px minmax(0, 1.4fr) minmax(0, 1fr) 90px 24px;
  align-items: center;
  gap: 20px;
  padding: 22px 4px;
  border-top: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}

.work-indexrow:last-child { border-bottom: 1px solid var(--line); }
.work-indexrow:hover { background: var(--paper-2); }

.work-indexrow .ri-num { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); }
.work-indexrow .ri-name { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: -0.02em; }
.work-indexrow .ri-cat { font-size: 0.88rem; color: var(--muted); }
.work-indexrow .ri-year { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); text-align: right; }
.work-indexrow .ri-arrow { color: var(--muted); transition: transform 0.3s var(--ease), color 0.3s var(--ease); }
.work-indexrow:hover .ri-arrow { transform: translateX(4px); color: var(--accent); }

/* ---------- Services ---------- */

.services-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 0;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 16px 28px;
  margin-bottom: clamp(44px, 6vw, 72px);
  width: fit-content;
  max-width: 100%;
}

.services-strip b { color: var(--ink); font-weight: 500; }
.services-strip .strip-sep { width: 40px; height: 1px; background: var(--accent); display: inline-block; margin: 0 16px; flex: none; }

.service-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1.1fr) minmax(0, 1.6fr);
  gap: clamp(20px, 3vw, 48px);
  padding: clamp(32px, 4vw, 48px) 0;
  border-top: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}

.service-row:last-child { border-bottom: 1px solid var(--line); }

.service-num { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em; color: var(--muted); padding-top: 8px; transition: color 0.3s var(--ease); }
.service-row:hover .service-num { color: var(--accent); }

.service-title { font-size: clamp(1.4rem, 2.2vw, 1.9rem); letter-spacing: -0.025em; }

.service-body p { color: var(--ink-2); font-size: 1rem; max-width: 58ch; }

.service-tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; }

.service-tags li {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
}

/* ---------- Process ---------- */

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 3vw, 40px);
}

.process-step {
  border-top: 2px solid var(--ink);
  padding-top: 24px;
  transition: border-color 0.35s var(--ease);
}

.process-step:hover { border-top-color: var(--accent); }

.process-step-num { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em; color: var(--muted); display: block; margin-bottom: 40px; }

.process-step h3 { font-size: 1.35rem; letter-spacing: -0.02em; margin-bottom: 12px; }
.process-step p { font-size: 0.95rem; color: var(--muted); }

/* ---------- Differentiators (dark) ---------- */

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

.diff-head { margin-bottom: clamp(48px, 6vw, 80px); }
.diff-head .eyebrow { color: var(--dark-muted); }

.diff-list { border-top: 1px solid var(--dark-line); }

.diff-item {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 64px);
  align-items: baseline;
  padding: clamp(30px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--dark-line);
}

.diff-item h3 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  letter-spacing: -0.025em;
}

.diff-item p { color: var(--dark-muted); font-size: 1rem; max-width: 52ch; }

/* ---------- Technology ---------- */

.tech-row {
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.tech-item {
  flex: 1 1 auto;
  min-width: 150px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 22px 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}

.tech-item:hover { color: var(--accent); background: var(--paper-2); }

.tech-note { margin-top: 24px; font-size: 0.95rem; color: var(--muted); max-width: 52ch; }

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(36px, 6vw, 88px);
  align-items: center;
}

.about-portrait {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 4.6;
}

.about-portrait img { width: 100%; height: 100%; object-fit: cover; object-position: center 22%; }

.about-copy .h-section { margin: 24px 0 28px; }
.about-copy p + p { margin-top: 18px; }
.about-copy p { color: var(--ink-2); max-width: 56ch; }

.about-sig {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: baseline;
}

.about-sig strong { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: -0.01em; }
.about-sig span { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

/* ---------- Closing CTA ---------- */

.cta-final { text-align: left; }

.cta-final .eyebrow { color: var(--dark-muted); margin-bottom: 28px; }

.cta-final h2 {
  font-size: clamp(2.4rem, 5.4vw, 4.4rem);
  letter-spacing: -0.035em;
  line-height: 1.04;
}

.cta-final .serif { color: var(--dark-muted); display: block; margin-top: 6px; }

.cta-final-actions { margin-top: 44px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.cta-final-note { margin-top: 28px; font-size: 0.9rem; color: var(--dark-muted); }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.contact-details { margin-top: 36px; display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }

.contact-details > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.contact-details dt { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.contact-details dd { margin: 0; font-weight: 500; }
.contact-details a:hover { color: var(--accent); }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 30px; }

.form-field { display: flex; flex-direction: column; gap: 8px; }

.form-field label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.form-field input,
.form-field textarea {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 10px 0 14px;
  border-radius: 0;
  transition: border-color 0.3s var(--ease);
}

.form-field textarea { resize: vertical; min-height: 110px; line-height: 1.6; }

.form-field input:focus,
.form-field textarea:focus { outline: none; border-bottom-color: var(--ink); }

.form-field input::placeholder,
.form-field textarea::placeholder { color: #B9B6AC; }

.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }

.form-submit { align-self: flex-start; margin-top: 6px; }

.form-status { font-size: 0.95rem; min-height: 1.4em; }
.form-status .error-msg, .form-status p { margin: 0; }
.form-status.has-success { color: var(--ink); font-weight: 500; }

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

.footer { background: var(--dark); color: var(--paper); padding: clamp(64px, 8vw, 104px) 0 40px; }

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--dark-line);
}

.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.footer-wordmark span { font-family: var(--font-mono); font-weight: 400; font-size: 0.62rem; letter-spacing: 0.22em; color: var(--dark-muted); }

.footer-tagline { margin-top: 16px; color: var(--dark-muted); font-size: 0.95rem; max-width: 30ch; }

.footer-col h4 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dark-muted);
  margin-bottom: 18px;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.95rem; color: rgba(250,250,248,0.85); transition: color 0.25s var(--ease); }
.footer-col a:hover { color: var(--paper); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 32px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark-muted);
}

/* ---------- Case study pages ---------- */

.case-hero { padding-top: calc(76px + clamp(56px, 9vw, 110px)); padding-bottom: clamp(48px, 6vw, 80px); }

.case-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.case-hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.case-hero-meta dt { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.case-hero-meta dd { margin: 0; font-size: 0.9rem; font-weight: 500; }

.case-hero-img { border-radius: 16px; overflow: hidden; border: 1px solid var(--line); }
.case-hero-img img { width: 100%; aspect-ratio: 21 / 10; object-fit: cover; object-position: top center; }

.case-section {
  max-width: var(--wrap);
  margin-left: auto;
  margin-right: auto;
  padding: clamp(48px, 7vw, 96px) var(--gutter);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(28px, 5vw, 80px);
}

.case-section .wrap { display: contents; }

.case-section-label { display: flex; flex-direction: column; gap: 10px; }

.case-section-label .cs-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.case-section-label h2 { font-size: clamp(1.5rem, 2.4vw, 2rem); letter-spacing: -0.025em; }

.case-prose { max-width: 62ch; }
.case-prose p + p { margin-top: 18px; }
.case-prose p { color: var(--ink-2); }

.case-prose ul { margin: 18px 0 0; padding-left: 20px; color: var(--ink-2); display: flex; flex-direction: column; gap: 8px; }

.case-figure { margin: 0; }
.case-figure img { border-radius: 14px; border: 1px solid var(--line); width: 100%; }

.case-result {
  background: var(--dark);
  color: var(--paper);
  border-radius: 16px;
  padding: clamp(36px, 5vw, 64px);
}

.case-result .cs-num { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em; color: var(--accent); display: block; margin-bottom: 14px; }
.case-result h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); letter-spacing: -0.025em; margin-bottom: 18px; }
.case-result p { color: var(--dark-muted); max-width: 60ch; }
.case-result p + p { margin-top: 14px; }

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 40px 0 0;
  border-top: 1px solid var(--line);
}

.case-nav a { display: flex; flex-direction: column; gap: 6px; }
.case-nav a span { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.case-nav a strong { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: -0.02em; transition: color 0.25s var(--ease); }
.case-nav a:hover strong { color: var(--accent); }
.case-nav .case-next { text-align: right; align-items: flex-end; }

/* ---------- Reveal ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .frame, .frame-img img, .btn, .tlink, .work-indexrow, .tech-item { transition: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .hero-top { grid-template-columns: 1fr; gap: 36px; align-items: start; }
  .wall { grid-template-columns: repeat(2, 1fr); }
  .wall-item:nth-child(3) { display: none; }
  .work-row, .work-row--flip { grid-template-columns: 1fr; }
  .work-media, .work-info, .work-row--flip .work-media, .work-row--flip .work-info { grid-column: 1 / -1; order: initial; }
  .work-row--flip .work-media { order: -1; }
  .service-row { grid-template-columns: 48px 1fr; }
  .service-body { grid-column: 2; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step-num { margin-bottom: 24px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-portrait { max-width: 440px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  :root { --gutter: 22px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 18px; }
  .sec-head-note { text-align: left; }
  .diff-item { grid-template-columns: 1fr; gap: 12px; }
  .case-section { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 640px) {
  body { font-size: 1rem; }
  .wall { grid-template-columns: 1fr; }
  .wall-item:nth-child(2) { margin-top: 0; }
  .work-indexrow { grid-template-columns: 40px 1fr 24px; }
  .work-indexrow .ri-cat, .work-indexrow .ri-year { display: none; }
  .services-strip { padding: 14px 20px; }
  .services-strip .strip-sep { margin: 0 10px; width: 22px; }
  .process-grid { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .hero-meta { flex-wrap: wrap; gap: 18px 24px; }
  .contact-details > div { grid-template-columns: 90px 1fr; }
}