:root {
  --bone: #eae8e1;
  --paper: #f4f3ee;
  --ink: #171a17;
  --ink-soft: #4a4f49;
  --sage: #6e7b66;
  --sage-soft: #a9b3a0;
  --daylight: #c9cfcc;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Space Grotesk", -apple-system, Helvetica, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { background: var(--bone); }

body {
  background: var(--bone);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; }

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

/* ---------- chrome ---------- */

.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 100;
}
.progress span {
  display: block;
  height: 100%;
  background: var(--sage);
  transform-origin: 0 0;
  transform: scaleX(0);
}

.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  z-index: 90;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (prefers-reduced-motion: no-preference) {
  .grain { animation: grainShift 0.9s steps(4) infinite; }
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 1%); }
  50% { transform: translate(1%, -2%); }
  75% { transform: translate(-1%, -1%); }
  100% { transform: translate(0, 0); }
}

.masthead {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 80;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.8rem 3rem;
}
.wordmark {
  font-size: 0.82rem;
  letter-spacing: 0.42em;
  font-weight: 500;
  color: var(--ink);
}
.masthead-link {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(23, 26, 23, 0.35);
  padding-bottom: 3px;
}

/* ---------- acts ---------- */

.act { position: relative; }

/* Act 1 — hero: film at first paint */

.hero-stage {
  position: relative;
  height: 100vh;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(234, 232, 225, 0.28) 0%, rgba(234, 232, 225, 0) 30%),
    linear-gradient(0deg, rgba(23, 26, 23, 0.52) 0%, rgba(23, 26, 23, 0.12) 42%, rgba(23, 26, 23, 0) 65%);
}
.hero-type {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 3rem 10vh;
  color: var(--paper);
  text-shadow: 0 1px 24px rgba(23, 26, 23, 0.35);
}
.hero-kicker {
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(244, 243, 238, 0.85);
  margin-bottom: 1.8rem;
}
.hero-headline {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(3rem, 8.4vw, 7.8rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
}
/* visible at 0.0s — no entry animation; scroll only ever moves them OUT */
.hero-headline .line { display: block; overflow: hidden; }
.hero-headline .line > span { display: block; }
.hero-mid {
  position: absolute;
  left: 3rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--paper);
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.5rem, 3vw, 2.6rem);
  line-height: 1.3;
  opacity: 0;
}
.hero-wipe {
  position: absolute;
  inset: 0;
  background: var(--bone);
  transform: translateY(101%);
}

/* Act 2 — thesis */

.act-thesis { background: var(--bone); }
.thesis-stage {
  height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 3rem;
}
.thesis-type {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.2rem, 6.2vw, 5.8rem);
  line-height: 1.1;
  max-width: 21ch;
  color: var(--ink);
}
.thesis-type .tline { display: block; overflow: hidden; }
.thesis-type .tline > span { display: block; }
.thesis-type .accent > span { color: var(--sage); }

/* Act 3 — rooms: photographs in sequence */

.rooms-stage {
  position: relative;
  height: 100vh;
  overflow: hidden;
  background: var(--ink);
}
.room {
  position: absolute;
  inset: 0;
}
.room-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.room-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.08);
}
.room-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(23, 26, 23, 0.35) 0%, rgba(23, 26, 23, 0) 45%);
}
.room-caption {
  position: absolute;
  left: 3rem;
  bottom: 9vh;
  max-width: 36ch;
  background: var(--paper);
  color: var(--ink);
  padding: 1.8rem 2.2rem 1.9rem;
}
.room-index {
  display: block;
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 1rem;
}
.room-caption h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  margin-bottom: 0.8rem;
}
.room-caption p {
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.6;
}
.room-2, .room-3 { clip-path: inset(100% 0 0 0); }

/* Act 4 — chapters: full-bleed photographs */

.act-chapters { background: var(--ink); }
.chapters-stage {
  position: relative;
  height: 100vh;
  overflow: hidden;
}
.chapter-media { position: absolute; inset: 0; }
.chapter-plate {
  position: absolute;
  inset: 0;
  opacity: 0;
  overflow: hidden;
  transform: scale(1.05);
}
.chapter-plate img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.chapter-plate::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(23, 26, 23, 0.28) 0%, rgba(23, 26, 23, 0) 55%);
}
.chapter-plate.is-active { opacity: 1; }
.chapter-copy { position: absolute; inset: 0; }
.chapter {
  position: absolute;
  left: 3rem;
  bottom: 12vh;
  max-width: 38ch;
  background: var(--paper);
  padding: 2rem 2.4rem 2.2rem;
  opacity: 0;
  transform: translateY(30px);
}
.chapter-index {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  color: var(--sage);
  font-size: 1.1rem;
  margin-bottom: 1.4rem;
}
.chapter h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 5.4vw, 5rem);
  line-height: 1;
  margin-bottom: 1.2rem;
  color: var(--ink);
}
.chapter p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 30ch;
}

/* Act 5 — method */

.act-method { background: var(--bone); }
.method-stage {
  position: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 0 3rem;
}
.method-label {
  position: absolute;
  top: 12vh;
  left: 3rem;
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--sage);
}
.method-number {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(10rem, 30vw, 26rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(110, 123, 102, 0.4);
  user-select: none;
  flex: 0 0 auto;
}
.method-steps {
  position: relative;
  flex: 1;
  margin-left: 4vw;
  min-height: 12rem;
}
.mstep {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  transform: translateY(24px);
}
.mstep h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 1;
  margin-bottom: 1rem;
  color: var(--ink);
}
.mstep p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 36ch;
}

/* Act 6 — practitioners */

.act-practitioners {
  padding: 24vh 3rem;
  background: var(--paper);
}
.section-label {
  display: block;
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 6rem;
}
.pract-list { list-style: none; }
.pract {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2rem;
  align-items: baseline;
  padding: 2.6rem 0;
  border-top: 1px solid rgba(23, 26, 23, 0.12);
}
.pract:last-child { border-bottom: 1px solid rgba(23, 26, 23, 0.12); }
.pract-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  color: var(--ink);
}
.pract-role {
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
}
.pract-cred {
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.reveal { opacity: 0; transform: translateY(28px); }

/* Act 7 — close */

.act-close { background: var(--bone); }
.close-stage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 16vh 3rem 0;
}
.close-kicker {
  font-size: 0.66rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 2.4rem;
}
.close-headline {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.6rem, 7vw, 6.4rem);
  line-height: 1.08;
  margin-bottom: 5rem;
  color: var(--ink);
}
.close-headline .cline { display: block; overflow: hidden; }
.close-headline .cline > span { display: block; }
.cta {
  display: inline-block;
  color: var(--paper);
  background: var(--sage);
  text-decoration: none;
  border: 1px solid var(--sage);
  border-radius: 999px;
  padding: 1.35rem 3.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
  will-change: transform;
}
.cta:hover {
  background: var(--ink);
  border-color: var(--ink);
}
.cta-inner { display: inline-block; will-change: transform; }
.close-footer {
  margin-top: auto;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 4rem 0 2.5rem;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(23, 26, 23, 0.45);
}

/* ---------- responsive ---------- */

@media (max-width: 820px) {
  .masthead { padding: 1.3rem 1.4rem; }
  .hero-type { padding: 0 1.4rem 10vh; }
  .hero-mid { left: 1.4rem; right: 1.4rem; }
  .thesis-stage, .method-stage { padding: 0 1.4rem; }
  .room-caption { left: 1.4rem; right: 1.4rem; padding: 1.4rem 1.6rem 1.5rem; }
  .chapter {
    left: 1.4rem; right: 1.4rem;
    max-width: none;
    padding: 1.6rem;
  }
  .method-number { display: none; }
  .method-steps { margin-left: 0; }
  .act-practitioners { padding: 18vh 1.4rem; }
  .pract { grid-template-columns: 1fr; gap: 0.5rem; }
  .close-stage { padding: 14vh 1.4rem 0; }
  .close-footer { flex-direction: column; gap: 0.6rem; align-items: center; }
}

/* ---------- reduced motion: freeze on poster ---------- */

@media (prefers-reduced-motion: reduce) {
  .reveal, .chapter, .mstep { opacity: 1; transform: none; }
  .hero-mid { position: relative; top: auto; left: 3rem; transform: none; opacity: 1; color: var(--ink); margin: 4rem 0; }
  .room-2, .room-3 { clip-path: none; position: relative; height: 100vh; }
  .room-1 { position: relative; height: 100vh; }
  .rooms-stage { height: auto; }
  .room-media img { transform: none; }
  .chapters-stage { height: auto; }
  .chapter-media { display: none; }
  .chapter-plate { transform: none; }
  .chapter-copy { position: relative; inset: auto; }
  .chapter { position: relative; margin: 4rem 1.4rem; bottom: auto; }
  .act-chapters { background: var(--paper); }
  .mstep { position: relative; margin: 3rem 0; }
  .method-stage { height: auto; padding-top: 16vh; padding-bottom: 16vh; }
}