/*
 * Specter Vision — Design System
 * Cinematic archive / visual research wing of the Mr. Specter world.
 *
 * Three energies, three sites:
 *   Chez Specter  — warm / material / elegant
 *   Specter Parts — dark / technical / trust
 *   Specter Vision — cinematic / archival / atmospheric
 *
 * This stylesheet layers over the Jepret base. All SV-specific rules
 * use .sv- prefix to avoid conflicts with the proofing portal.
 */

/* ============================================================
   TOKENS
   ============================================================ */
:root {
  /* Palette */
  --sv-black:        #0A0A0A;
  --sv-dark:         #141414;
  --sv-surface:      #1C1C1C;
  --sv-surface-mid:  #282828;
  --sv-surface-warm: #1E1A16;
  --sv-cream:        #F3EDE0;
  --sv-cream-mid:    #E8E0CE;
  --sv-cream-dark:   #D8CDB8;
  --sv-warm-white:   #FAF8F4;
  --sv-muted:        #7A7A70;
  --sv-muted-light:  #ADADAA;
  --sv-accent:       #C4AA82;
  --sv-accent-dark:  #9E8460;
  --sv-green:        #3B5740;
  --sv-green-light:  #4D7055;
  --sv-text:         #1A1A16;
  --sv-text-mid:     #3A3A32;

  /* Typography */
  --sv-font:         "Poppins", sans-serif;
  --sv-mono:         "Courier New", monospace;

  /* Scale */
  --sv-xs:   1.1rem;
  --sv-sm:   1.3rem;
  --sv-base: 1.6rem;
  --sv-md:   2.0rem;
  --sv-lg:   2.8rem;
  --sv-xl:   4.0rem;
  --sv-2xl:  5.6rem;
  --sv-3xl:  7.2rem;
  --sv-4xl:  10rem;

  /* Spacing */
  --sv-sp-xs:  8px;
  --sv-sp-sm:  16px;
  --sv-sp-md:  32px;
  --sv-sp-lg:  64px;
  --sv-sp-xl:  96px;
  --sv-sp-2xl: 140px;

  /* Layout */
  --sv-max:      1240px;
  --sv-max-read: 720px;
  --sv-max-nar:  480px;

  /* Transitions */
  --sv-ease:      cubic-bezier(0.16, 1, 0.3, 1);   /* spring deceleration */
  --sv-ease-out:  cubic-bezier(0.0, 0, 0.2, 1);
  --sv-ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --sv-dur:       0.4s;
  --sv-dur-slow:  1s;
  --sv-dur-xslow: 2s;

  --sv-focus-ring: rgba(196, 170, 130, 0.34);
}

/* ============================================================
   GLOBAL RESETS FOR SV PAGES
   ============================================================ */
.sv-page {
  background: var(--sv-black);
  color: var(--sv-warm-white);
  font-family: var(--sv-font);
}

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

.sv-page :where(img:not(.sv-study-card__img):not(.sv-artifact-card__img)) {
  display: block;
  max-width: 100%;
  height: auto;
}

.sv-study-card:focus-visible,
.sv-artifact-card:focus-visible,
.sv-note-row:focus-visible,
.sv-related-item:focus-visible,
.sv-world-door:focus-visible,
.sv-btn:focus-visible,
.sv-header__nav a:focus-visible,
.sv-footer__nav a:focus-visible,
.sv-footer__legal a:focus-visible,
.sv-footer__legal-button:focus-visible,
.sv-breadcrumb a:focus-visible,
.sv-header__logo:focus-visible,
.sv-footer__brand-link:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 1px rgba(196, 170, 130, 0.72),
    0 0 0 4px var(--sv-focus-ring);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.sv-container {
  max-width: var(--sv-max);
  margin: 0 auto;
  padding: 0 var(--sv-sp-md);
}

.sv-container--read {
  max-width: var(--sv-max-read);
  margin: 0 auto;
  padding: 0 var(--sv-sp-md);
}

.sv-container--narrow {
  max-width: var(--sv-max-nar);
  margin: 0 auto;
  padding: 0 var(--sv-sp-md);
}

.sv-row {
  display: flex;
  gap: var(--sv-sp-md);
}

.sv-col-2 { flex: 0 0 50%; max-width: 50%; }
.sv-col-3 { flex: 0 0 33.333%; max-width: 33.333%; }
.sv-col-4 { flex: 0 0 25%; max-width: 25%; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.sv-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sv-sp-md);
  height: 64px;
  background: transparent;
  transition: background var(--sv-dur) var(--sv-ease),
              border-color var(--sv-dur) var(--sv-ease);
}

.sv-header--scrolled {
  background: rgba(10, 10, 10, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-header--menu-open {
  background: var(--sv-black);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: opacity 0.5s var(--sv-ease);
}

.sv-header__logo:hover { opacity: 0.75; }

.sv-header__seal {
  display: block !important;
  height: 20px !important;
  width: auto !important;
  max-width: none !important;
  max-height: 20px !important;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.5s var(--sv-ease), transform 0.7s var(--sv-ease);
}

.sv-header__logo:hover .sv-header__seal {
  opacity: 1;
  transform: rotate(8deg) scale(1.1);
}

.sv-header__logo-text {
  font-size: var(--sv-sm);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sv-warm-white);
}

.sv-header__nav {
  display: flex;
  align-items: center;
  gap: var(--sv-sp-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.sv-header__nav a {
  position: relative;
  font-size: var(--sv-xs);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(250, 248, 244, 0.7);
  text-decoration: none;
  transition: color var(--sv-dur) var(--sv-ease),
              opacity var(--sv-dur) var(--sv-ease);
}

.sv-header__nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--sv-accent) 16%, var(--sv-accent) 84%, transparent 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s var(--sv-ease);
}

.sv-header__nav a:hover,
.sv-header__nav a.is-active {
  color: var(--sv-warm-white);
}

.sv-header__nav a:hover::after,
.sv-header__nav a.is-active::after,
.sv-header__nav a:focus-visible::after {
  transform: scaleX(1);
}

.sv-header__nav .sv-nav-cta a {
  color: var(--sv-accent);
  border: 1px solid rgba(196, 170, 130, 0.4);
  padding: 6px 16px;
  border-radius: 2px;
}

.sv-header__nav .sv-nav-cta a:hover {
  border-color: var(--sv-accent);
  background: rgba(196, 170, 130, 0.08);
}

/* ── Hamburger bars ─────────────────────────────────────────── */
.sv-header__bar {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--sv-warm-white);
  transition: transform 0.45s var(--sv-ease), opacity 0.3s, width 0.45s var(--sv-ease);
}

.sv-header__toggle.is-active .sv-header__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.sv-header__toggle.is-active .sv-header__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.sv-header__toggle.is-active .sv-header__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile hamburger */
.sv-header__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--sv-warm-white);
  font-size: 2rem;
}

/* ============================================================
   HERO — Full screen
   ============================================================ */
.sv-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100svh;
  height: 100dvh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  background: var(--sv-dark);
}

.sv-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.sv-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.sv-hero__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sv-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.88) 0%,
    rgba(10, 10, 10, 0.30) 50%,
    rgba(10, 10, 10, 0.10) 100%
  );
  z-index: 1;
}

.sv-hero__content {
  position: relative;
  z-index: 2;
  padding: var(--sv-sp-xl) var(--sv-sp-md);
  max-width: var(--sv-max);
  margin: 0 auto;
  width: 100%;
}

.sv-hero__eyebrow {
  font-size: var(--sv-xs);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--sv-accent);
  margin-bottom: var(--sv-sp-sm);
  display: block;
}

.sv-hero__title {
  font-size: clamp(4rem, 8vw, var(--sv-4xl));
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--sv-warm-white);
  margin: 0 0 var(--sv-sp-sm);
}

.sv-hero__subtitle {
  font-size: clamp(1.4rem, 2vw, var(--sv-md));
  font-weight: 300;
  color: rgba(250, 248, 244, 0.65);
  max-width: 540px;
  margin: 0 0 var(--sv-sp-lg);
  line-height: 1.6;
}

/* Scroll indicator */
.sv-hero__scroll {
  position: absolute;
  bottom: 32px;
  right: var(--sv-sp-md);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: var(--sv-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(250,248,244,0.4);
  writing-mode: vertical-rl;
}

.sv-hero__scroll::after {
  content: '';
  width: 1px;
  height: 48px;
  background: rgba(250,248,244,0.2);
}

/* ============================================================
   PAGE HEADER (non-hero pages)
   ============================================================ */
.sv-page-header {
  padding: 140px var(--sv-sp-md) var(--sv-sp-xl);
  background: var(--sv-dark);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-page-header__eyebrow {
  font-size: var(--sv-xs);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--sv-accent);
  display: block;
  margin-bottom: var(--sv-sp-sm);
}

.sv-page-header__title {
  font-size: clamp(3.2rem, 5vw, var(--sv-3xl));
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--sv-warm-white);
  margin: 0 0 var(--sv-sp-sm);
}

.sv-page-header__subtitle {
  font-size: var(--sv-base);
  font-weight: 300;
  color: var(--sv-muted-light);
  max-width: 580px;
  line-height: 1.65;
}

/* ============================================================
   MANIFESTO SECTION
   ============================================================ */
.sv-manifesto {
  background: var(--sv-surface-warm);
  padding: var(--sv-sp-2xl) var(--sv-sp-md);
}

.sv-manifesto__text {
  font-size: clamp(1.8rem, 2.5vw, var(--sv-lg));
  font-weight: 300;
  line-height: 1.65;
  color: var(--sv-cream);
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.sv-manifesto__text em {
  font-style: italic;
  color: var(--sv-accent);
}

/* ============================================================
   SECTION CHROME
   ============================================================ */
.sv-section {
  padding: var(--sv-sp-2xl) 0;
}

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

.sv-section--black {
  background: var(--sv-black);
}

.sv-section--cream {
  background: var(--sv-cream);
  color: var(--sv-text);
}

.sv-section--surface {
  background: var(--sv-surface);
}

.sv-section__header {
  margin-bottom: var(--sv-sp-lg);
}

.sv-section__cta {
  display: flex;
  justify-content: flex-end;
  padding-top: var(--sv-sp-md);
  padding-bottom: var(--sv-sp-sm);
}

.sv-section__eyebrow {
  font-size: var(--sv-xs);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--sv-accent);
  display: block;
  margin-bottom: var(--sv-sp-xs);
}

.sv-section__title {
  font-size: clamp(2.4rem, 3.5vw, var(--sv-2xl));
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--sv-warm-white);
  margin: 0;
}

.sv-section--cream .sv-section__title {
  color: var(--sv-text);
}

.sv-section__lead {
  font-size: var(--sv-base);
  font-weight: 300;
  color: var(--sv-muted-light);
  margin-top: var(--sv-sp-sm);
  max-width: 540px;
  line-height: 1.7;
}

.sv-section--cream .sv-section__lead {
  color: var(--sv-text-mid);
}

.sv-divider {
  width: 40px;
  height: 1px;
  background: var(--sv-accent);
  margin: var(--sv-sp-sm) 0;
}

/* ============================================================
   STUDY CARDS
   ============================================================ */
.sv-study-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2px;
}

.sv-study-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--sv-surface);
  cursor: pointer;
  isolation: isolate;
}

.sv-page .sv-study-card img.sv-study-card__img,
.sv-page .sv-study-card__img {
  position: absolute;
  inset: 0;
  display: block;
  max-width: none !important;
  min-height: 100%;
  min-width: 100%;
  width: 100%;
  height: 100% !important;
  object-fit: cover;
  transition: transform 0.7s var(--sv-ease);
}

.sv-study-card:hover .sv-study-card__img {
  transform: scale(1.04);
}

.sv-study-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,10,10,0.85) 0%,
    rgba(10,10,10,0.15) 60%,
    transparent 100%
  );
  transition: opacity var(--sv-dur) var(--sv-ease);
  z-index: 1;
}

.sv-study-card__body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sv-sp-md);
  z-index: 2;
}

.sv-study-card__type {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-accent);
  display: block;
  margin-bottom: 8px;
}

.sv-study-card__title {
  font-size: var(--sv-md);
  font-weight: 600;
  color: var(--sv-warm-white);
  line-height: 1.25;
  margin: 0 0 8px;
}

.sv-study-card__excerpt {
  font-size: var(--sv-sm);
  color: rgba(250,248,244,0.6);
  line-height: 1.5;
  display: none;
}

.sv-study-card:hover .sv-study-card__excerpt {
  display: block;
}

/* Large featured card */
.sv-study-card--featured {
  aspect-ratio: 16/9;
  grid-column: 1 / -1;
}

.sv-study-card--featured .sv-study-card__title {
  font-size: clamp(2.4rem, 4vw, var(--sv-xl));
}

/* ============================================================
   ARTIFACT GRID
   ============================================================ */
.sv-artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2px;
}

.sv-artifact-card {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--sv-surface);
  cursor: pointer;
  isolation: isolate;
}

.sv-page .sv-artifact-card img.sv-artifact-card__img,
.sv-page .sv-artifact-card__img {
  display: block;
  max-width: none !important;
  min-height: 100%;
  min-width: 100%;
  width: 100%;
  height: 100% !important;
  object-fit: cover;
  transition: transform 0.6s var(--sv-ease);
}

.sv-artifact-card:hover .sv-artifact-card__img {
  transform: scale(1.06);
}

.sv-artifact-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0);
  transition: background var(--sv-dur) var(--sv-ease);
  display: flex;
  align-items: flex-end;
  padding: var(--sv-sp-sm);
  z-index: 1;
}

.sv-artifact-card:hover .sv-artifact-card__overlay {
  background: rgba(10,10,10,0.6);
}

.sv-artifact-card__label {
  font-size: var(--sv-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sv-warm-white);
  opacity: 0;
  transition: opacity var(--sv-dur) var(--sv-ease);
}

.sv-artifact-card:hover .sv-artifact-card__label {
  opacity: 1;
}

/* ============================================================
   FIELD NOTES LIST
   ============================================================ */
.sv-notes-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.sv-note-row {
  position: relative;
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: var(--sv-sp-md);
  align-items: start;
  padding: var(--sv-sp-md) 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-decoration: none;
  color: inherit;
  transition: padding-left var(--sv-dur) var(--sv-ease);
}

.sv-note-row:hover {
  padding-left: var(--sv-sp-xs);
}

.sv-note-row__category {
  font-size: var(--sv-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sv-accent);
  padding-top: 4px;
}

.sv-note-row__title {
  font-size: var(--sv-md);
  font-weight: 500;
  color: var(--sv-warm-white);
  line-height: 1.3;
  margin: 0 0 var(--sv-sp-xs);
}

.sv-note-row__subtitle {
  font-size: var(--sv-sm);
  color: var(--sv-muted);
  font-weight: 300;
}

.sv-note-row__date {
  font-size: var(--sv-xs);
  color: var(--sv-muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   STUDY PAGE — Long-form layout
   ============================================================ */
.sv-study-header {
  padding: 130px 0 var(--sv-sp-xl);
  background: var(--sv-dark);
}

.sv-study-header__meta {
  display: flex;
  gap: var(--sv-sp-md);
  margin-bottom: var(--sv-sp-md);
  flex-wrap: wrap;
}

.sv-study-header__meta-item {
  font-size: var(--sv-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sv-muted);
}

.sv-study-header__meta-item strong {
  color: var(--sv-accent);
}

.sv-study-header__title {
  font-size: clamp(3.2rem, 5vw, var(--sv-3xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--sv-warm-white);
  margin: 0 0 var(--sv-sp-sm);
}

.sv-study-header__subtitle {
  font-size: var(--sv-md);
  font-weight: 300;
  color: rgba(250,248,244,0.55);
  max-width: 580px;
  line-height: 1.6;
}

.sv-hero--study {
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
}

.sv-hero--study .sv-hero__overlay {
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.9) 0%,
    rgba(10, 10, 10, 0.38) 48%,
    rgba(10, 10, 10, 0.12) 100%
  );
}

.sv-hero--study .sv-hero__content {
  padding-top: calc(64px + var(--sv-sp-lg));
  padding-bottom: clamp(44px, 8vw, 72px);
}

.sv-hero--study .sv-hero__title {
  max-width: 10ch;
  text-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
}

.sv-study-meta-bar {
  background: rgba(26, 26, 26, 0.94);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-study-meta-bar .sv-study-header__meta {
  margin: 0;
  padding: 18px 0 16px;
  gap: 28px;
}

.sv-study-header__meta-item {
  color: rgba(245, 241, 235, 0.5);
}

.sv-study-header__meta-item strong {
  color: rgba(245, 241, 235, 0.92);
  font-weight: 600;
}

.sv-study-header__meta-item a {
  color: rgba(245, 241, 235, 0.78);
  text-decoration: none;
  border-bottom: 1px solid rgba(196, 170, 130, 0.28);
  transition: color var(--sv-dur) var(--sv-ease),
              border-color var(--sv-dur) var(--sv-ease);
}

.sv-study-header__meta-item a:hover {
  color: var(--sv-warm-white);
  border-color: rgba(196, 170, 130, 0.58);
}

.sv-study-note {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.015) 100%
  );
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: clamp(72px, 9vw, 112px) var(--sv-sp-md) clamp(48px, 7vw, 72px);
}

.sv-study-note__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.sv-study-note__content {
  max-width: 700px;
  text-align: left;
  padding: clamp(28px, 4vw, 44px);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.035) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.22);
}

.sv-study-note__eyebrow {
  display: block;
  margin-bottom: 20px;
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(245, 241, 235, 0.46);
}

.sv-study-note__title {
  margin: 0 0 24px;
  color: var(--sv-warm-white);
  font-size: clamp(2.4rem, 4vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.sv-study-note__body {
  font-size: clamp(1.6rem, 1vw, 1.7rem);
  line-height: 1.88;
  color: rgba(245, 241, 235, 0.78);
}

.sv-study-note__body p {
  margin: 0 0 20px;
  color: rgba(245, 241, 235, 0.78);
}

.sv-study-note__body p:last-child {
  margin-bottom: 0;
}

.sv-study-note__body em {
  display: block;
  margin-top: 24px;
  color: rgba(245, 241, 235, 0.56);
  font-style: italic;
}

.sv-study-body {
  padding: 0 0 clamp(72px, 8vw, 112px);
  background: var(--sv-black);
}

.sv-study-series-nav {
  padding: clamp(44px, 7vw, 72px) 0 clamp(72px, 8vw, 104px);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.015) 0%,
    rgba(255, 255, 255, 0.03) 100%
  );
  border-top: 1px solid rgba(255,255,255,0.06);
}

.sv-study-series-nav__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: end;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.22);
}

.sv-study-series-nav__eyebrow {
  display: block;
  margin-bottom: 12px;
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(245, 241, 235, 0.5);
}

.sv-study-series-nav__title {
  margin: 0;
  font-size: clamp(2.4rem, 4vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--sv-warm-white);
}

.sv-study-series-nav__copy {
  margin: 16px 0 0;
  font-size: var(--sv-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(245, 241, 235, 0.58);
}

.sv-study-series-nav__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.sv-series-parts {
  padding: clamp(72px, 8vw, 112px) 0;
  background: var(--sv-black);
}

.sv-series-parts__cta {
  display: flex;
  justify-content: flex-end;
  padding-top: var(--sv-sp-lg);
}

/* ============================================================
   STREAM FIELD BLOCKS
   ============================================================ */

/* Full-Width Image */
.sv-block-full-image {
  margin: var(--sv-sp-xl) 0;
  position: relative;
}

.sv-block-full-image img {
  width: 100%;
  height: auto;
  display: block;
}

.sv-block-full-image figcaption {
  padding: var(--sv-sp-sm) var(--sv-sp-md);
  font-size: var(--sv-xs);
  color: var(--sv-muted);
  letter-spacing: 0.1em;
}

/* Full-Width Video */
.sv-block-full-video {
  margin: var(--sv-sp-xl) 0;
  position: relative;
  background: var(--sv-surface);
}

.sv-block-full-video__wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}

.sv-block-full-video__wrapper iframe,
.sv-block-full-video__wrapper video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Text Essay */
.sv-block-essay {
  padding: clamp(56px, 8vw, 96px) var(--sv-sp-md);
}

.sv-block-essay__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.sv-block-essay--left .sv-block-essay__heading,
.sv-block-essay--left .sv-block-essay__body,
.sv-block-essay--narrow .sv-block-essay__heading,
.sv-block-essay--narrow .sv-block-essay__body {
  max-width: 700px;
}

.sv-block-essay--center {
  text-align: center;
}

.sv-block-essay--center .sv-block-essay__heading,
.sv-block-essay--center .sv-block-essay__body {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.sv-block-essay__heading {
  font-size: clamp(2.4rem, 4vw, var(--sv-xl));
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--sv-warm-white);
  margin: 0 0 24px;
  line-height: 1;
}

.sv-block-essay__body {
  font-size: clamp(1.55rem, 1vw, 1.7rem);
  line-height: 1.9;
  color: rgba(245, 241, 235, 0.78);
}

.sv-block-essay__body p,
.sv-block-essay__body li,
.sv-block-essay__body blockquote {
  color: rgba(245, 241, 235, 0.78);
}

.sv-block-essay__body p { margin: 0 0 20px; }
.sv-block-essay__body h2 { font-size: var(--sv-lg); color: var(--sv-warm-white); margin: var(--sv-sp-lg) 0 var(--sv-sp-sm); }
.sv-block-essay__body h3 { font-size: var(--sv-md); color: var(--sv-warm-white); margin: var(--sv-sp-md) 0 var(--sv-sp-xs); }
.sv-block-essay__body a { color: var(--sv-accent); text-underline-offset: 3px; }
.sv-block-essay__body blockquote {
  border-left: 2px solid var(--sv-accent);
  padding-left: var(--sv-sp-md);
  color: rgba(245, 241, 235, 0.62);
  font-style: italic;
  margin: var(--sv-sp-md) 0;
}

/* Pull Quote */
.sv-block-pullquote {
  padding: var(--sv-sp-xl) var(--sv-sp-md);
  text-align: center;
}

.sv-block-pullquote__quote {
  font-size: clamp(2rem, 3.5vw, var(--sv-xl));
  font-weight: 300;
  font-style: italic;
  line-height: 1.4;
  color: var(--sv-cream);
  max-width: 800px;
  margin: 0 auto var(--sv-sp-sm);
}

.sv-block-pullquote__quote::before { content: '\201C'; }
.sv-block-pullquote__quote::after  { content: '\201D'; }

.sv-block-pullquote__attribution {
  font-size: var(--sv-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

/* Image Gallery */
.sv-block-gallery {
  padding: 0 var(--sv-sp-md) clamp(72px, 9vw, 120px);
}

.sv-block-gallery__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.sv-block-gallery__header {
  margin-bottom: clamp(22px, 3vw, 30px);
}

.sv-block-gallery__heading {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--sv-warm-white);
}

.sv-block-gallery__lead {
  margin: 0 0 10px;
  overflow: hidden;
  background: #111;
}

.sv-block-gallery__lead img {
  width: 100%;
  height: auto;
  display: block;
}

.sv-block-gallery__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 10px;
  align-items: start;
  grid-auto-flow: row;
}

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

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

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

.sv-block-gallery__item {
  margin: 0;
  overflow: hidden;
  background: #111;
  grid-column: span 1;
  min-width: 0;
  width: 100%;
}

.sv-block-gallery__grid:not(.sv-block-gallery__grid--2) .sv-block-gallery__item--wide,
.sv-block-gallery__grid:not(.sv-block-gallery__grid--2) .sv-block-gallery__item--large {
  grid-column: span 2;
}

.sv-block-gallery__grid--2 .sv-block-gallery__item--wide,
.sv-block-gallery__grid--2 .sv-block-gallery__item--large,
.sv-block-gallery__item--natural {
  grid-column: 1 / -1;
}

.sv-block-gallery__item--natural {
  width: 100%;
  max-width: 860px;
  justify-self: center;
}

.sv-block-gallery__item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Image Sequence (horizontal strip) */
.sv-block-sequence {
  padding: 0 var(--sv-sp-md) clamp(72px, 9vw, 112px);
  overflow: hidden;
}

.sv-block-sequence__track {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.sv-block-sequence__track::-webkit-scrollbar { display: none; }

.sv-block-sequence__item {
  flex: 0 0 auto;
  width: clamp(240px, 35vw, 520px);
  scroll-snap-align: start;
}

.sv-block-sequence__item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Study Split: Text + Image */
.sv-study-split {
  padding: clamp(56px, 8vw, 104px) var(--sv-sp-md);
}

.sv-study-split__inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(32px, 5vw, 88px);
  align-items: center;
}

.sv-study-split--image-left .sv-study-split__media {
  order: -1;
}

.sv-study-split__copy {
  max-width: 52ch;
  justify-self: start;
}

.sv-study-split__eyebrow {
  display: block;
  margin-bottom: var(--sv-sp-sm);
  font-size: var(--sv-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-study-split__heading {
  margin: 0;
  font-size: clamp(3.2rem, 4vw, var(--sv-xl));
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--sv-warm-white);
}

.sv-body-text {
  font-size: var(--sv-base);
  font-weight: 300;
  line-height: 1.8;
  color: rgba(250,248,244,0.9);
}

.sv-body-text > :first-child {
  margin-top: 0;
}

.sv-body-text > :last-child {
  margin-bottom: 0;
}

.sv-body-text p,
.sv-body-text ul,
.sv-body-text ol,
.sv-body-text blockquote {
  margin: 0 0 1.4em;
  color: rgba(250,248,244,0.9);
}

.sv-body-text ul,
.sv-body-text ol {
  padding-left: 1.25em;
}

.sv-body-text li + li {
  margin-top: 0.6em;
}

.sv-body-text li {
  color: rgba(250,248,244,0.9);
}

.sv-body-text h2,
.sv-body-text h3,
.sv-body-text h4 {
  margin: 0 0 0.75em;
  color: var(--sv-warm-white);
  line-height: 1.2;
}

.sv-body-text strong {
  color: var(--sv-warm-white);
}

.sv-body-text a {
  color: var(--sv-accent);
  text-underline-offset: 3px;
}

.sv-study-split__media {
  width: 100%;
  max-width: 420px;
  margin: 0;
  justify-self: center;
  padding: 0;
  background: transparent;
  border: 0;
}

.sv-study-split__media img {
  width: 100%;
  height: auto;
  display: block;
}

.sv-study-split__caption {
  font-size: var(--sv-xs);
  color: var(--sv-muted-light);
  margin-top: var(--sv-sp-sm);
  letter-spacing: 0.1em;
  line-height: 1.6;
}

.sv-body-artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--sv-sp-md);
  align-items: start;
}

.sv-body-artifact-grid__item {
  margin: 0;
}

.sv-body-artifact-grid__img {
  width: 100%;
  height: auto;
  display: block;
}

.sv-body-artifact-grid__caption {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: var(--sv-sp-xs);
}

.sv-body-artifact-grid__label {
  font-size: var(--sv-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-body-artifact-grid__text {
  font-size: var(--sv-sm);
  line-height: 1.5;
  color: var(--sv-muted-light);
}

/* Technical Notes */
.sv-block-tech-notes {
  margin: var(--sv-sp-lg) auto;
  max-width: var(--sv-max-read);
  padding: var(--sv-sp-md);
  border: 1px solid rgba(255,255,255,0.08);
  background: var(--sv-surface);
}

.sv-block-tech-notes__heading {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-accent);
  margin-bottom: var(--sv-sp-sm);
}

.sv-block-tech-notes__body {
  font-size: var(--sv-sm);
  color: var(--sv-muted-light);
  line-height: 1.7;
  font-family: var(--sv-mono);
}

/* Instagram Embed */
.sv-block-instagram {
  padding: var(--sv-sp-lg) var(--sv-sp-md);
  text-align: center;
}

.sv-block-instagram__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sv-sp-sm);
  color: var(--sv-accent);
  font-size: var(--sv-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid rgba(196,170,130,0.3);
  padding: var(--sv-sp-sm) var(--sv-sp-md);
  transition: border-color var(--sv-dur), background var(--sv-dur);
}

.sv-block-instagram__link:hover {
  border-color: var(--sv-accent);
  background: rgba(196,170,130,0.06);
}

/* Related Platform */
.sv-block-platform {
  margin: var(--sv-sp-xl) var(--sv-sp-md);
  padding: var(--sv-sp-lg);
  border: 1px solid rgba(255,255,255,0.08);
  background: var(--sv-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sv-sp-md);
}

.sv-block-platform__label {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-accent);
  margin-bottom: var(--sv-sp-xs);
}

.sv-block-platform__heading {
  font-size: var(--sv-md);
  font-weight: 600;
  color: var(--sv-warm-white);
  margin: 0 0 var(--sv-sp-xs);
}

.sv-block-platform__desc {
  font-size: var(--sv-sm);
  color: var(--sv-muted-light);
  line-height: 1.6;
}

/* Credits */
.sv-block-credits {
  padding: var(--sv-sp-md) var(--sv-sp-md);
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: var(--sv-sp-xl);
}

.sv-block-credits__heading {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-muted);
  margin-bottom: var(--sv-sp-sm);
}

.sv-block-credits__body {
  font-size: var(--sv-sm);
  color: var(--sv-muted);
  line-height: 1.7;
}

/* CTA Section */
.sv-block-cta {
  padding: var(--sv-sp-2xl) var(--sv-sp-md);
  text-align: center;
}

.sv-block-cta--dark    { background: var(--sv-dark); }
.sv-block-cta--cream   { background: var(--sv-cream); color: var(--sv-text); }
.sv-block-cta--transparent { background: transparent; }

.sv-block-cta__heading {
  font-size: clamp(2.4rem, 4vw, var(--sv-2xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--sv-sp-sm);
}

.sv-block-cta--dark .sv-block-cta__heading    { color: var(--sv-warm-white); }
.sv-block-cta--cream .sv-block-cta__heading   { color: var(--sv-text); }

.sv-block-cta__subtext {
  font-size: var(--sv-base);
  font-weight: 300;
  color: var(--sv-muted-light);
  max-width: 480px;
  margin: 0 auto var(--sv-sp-md);
  line-height: 1.65;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.sv-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--sv-sp-xs);
  font-size: var(--sv-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 28px;
  border: 1px solid currentColor;
  transition: background var(--sv-dur) var(--sv-ease),
              color var(--sv-dur) var(--sv-ease),
              border-color var(--sv-dur) var(--sv-ease);
  cursor: pointer;
  background: transparent;
  overflow: hidden;
  isolation: isolate;
}

.sv-btn--light {
  color: var(--sv-warm-white);
  border-color: rgba(250,248,244,0.4);
}

.sv-btn--light:hover {
  background: var(--sv-warm-white);
  color: var(--sv-black);
  border-color: var(--sv-warm-white);
}

.sv-btn--accent {
  color: var(--sv-accent);
  border-color: rgba(196,170,130,0.5);
}

.sv-btn--accent:hover {
  background: var(--sv-accent);
  color: var(--sv-black);
  border-color: var(--sv-accent);
}

.sv-btn--dark {
  color: var(--sv-text);
  border-color: var(--sv-text-mid);
  background: transparent;
}

.sv-btn--dark:hover {
  background: var(--sv-text);
  color: var(--sv-warm-white);
}

.sv-btn--fill {
  background: var(--sv-accent);
  color: var(--sv-black);
  border-color: var(--sv-accent);
}

.sv-btn--fill:hover {
  background: var(--sv-accent-dark);
  border-color: var(--sv-accent-dark);
}

/* ============================================================
   WORLD DOORWAY — links between the three platforms
   ============================================================ */
.sv-world-doors {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.05);
}

.sv-world-door {
  position: relative;
  padding: var(--sv-sp-xl) var(--sv-sp-lg);
  background: var(--sv-surface);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--sv-sp-sm);
  transition: background var(--sv-dur) var(--sv-ease);
  overflow: hidden;
  isolation: isolate;
}

.sv-world-door:hover {
  background: var(--sv-surface-mid);
}

.sv-world-door__label {
  font-size: var(--sv-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-world-door__name {
  font-size: var(--sv-xl);
  font-weight: 700;
  color: var(--sv-warm-white);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.sv-world-door__desc {
  font-size: var(--sv-sm);
  color: var(--sv-muted);
  line-height: 1.6;
  font-weight: 300;
}

.sv-world-door__arrow {
  font-size: var(--sv-md);
  color: var(--sv-accent);
  margin-top: auto;
  transition: transform var(--sv-dur) var(--sv-ease);
}

.sv-world-door:hover .sv-world-door__arrow {
  transform: translateX(6px);
}

/* ============================================================
   INSTAGRAM STRIP
   ============================================================ */
.sv-instagram-strip {
  padding: var(--sv-sp-xl) 0;
  background: var(--sv-surface);
}

.sv-instagram-strip__heading {
  text-align: center;
  margin-bottom: var(--sv-sp-md);
}

.sv-instagram-strip__link {
  font-size: var(--sv-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sv-accent);
  text-decoration: none;
}

.sv-instagram-strip__link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ============================================================
   COLLABORATE / FORM
   ============================================================ */
.sv-form {
  display: flex;
  flex-direction: column;
  gap: var(--sv-sp-md);
}

.sv-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sv-sp-md);
}

.sv-field {
  display: flex;
  flex-direction: column;
  gap: var(--sv-sp-xs);
}

.sv-field label {
  font-size: var(--sv-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sv-muted-light);
}

.sv-field input,
.sv-field select,
.sv-field textarea {
  background: var(--sv-surface);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--sv-warm-white);
  font-family: var(--sv-font);
  font-size: var(--sv-base);
  padding: 12px 16px;
  transition: border-color var(--sv-dur);
  outline: none;
  width: 100%;
}

.sv-field input:focus,
.sv-field select:focus,
.sv-field textarea:focus {
  border-color: var(--sv-accent);
}

.sv-field select option {
  background: var(--sv-surface);
}

.sv-field--error input,
.sv-field--error textarea,
.sv-field--error select {
  border-color: #e05555;
}

.sv-field__error {
  font-size: var(--sv-xs);
  color: #e05555;
}

.sv-form-success {
  padding: var(--sv-sp-lg);
  border: 1px solid var(--sv-accent);
  text-align: center;
  color: var(--sv-cream);
}

/* ============================================================
   ARTIFACT PAGE
   ============================================================ */
.sv-artifact-header {
  padding: 130px var(--sv-sp-md) clamp(44px, 7vw, 72px);
  background:
    radial-gradient(circle at 50% 0%, rgba(196, 170, 130, 0.08), transparent 34%),
    var(--sv-dark);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-artifact-type-badge {
  display: inline-block;
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-black);
  background: var(--sv-accent);
  padding: 4px 12px;
  margin-bottom: var(--sv-sp-sm);
}

.sv-artifact-header__title {
  padding-top: 0;
  margin-bottom: 16px;
  max-width: 14ch;
}

.sv-artifact-header__subtitle {
  max-width: 56ch;
}

.sv-artifact-header__meta {
  margin-top: var(--sv-sp-md);
}

.sv-artifact-visual {
  background: linear-gradient(180deg, var(--sv-dark) 0%, var(--sv-black) 100%);
  padding: 0 0 clamp(20px, 4vw, 36px);
}

.sv-artifact-visual__frame {
  margin: 0;
}

.sv-artifact-visual__img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: min(76vh, 1120px);
  margin: 0 auto;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
}

.sv-artifact-visual__caption {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 18px;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sv-artifact-visual__caption-label {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-artifact-visual__caption-text {
  font-size: 1.35rem;
  line-height: 1.7;
  color: rgba(250,248,244,0.64);
}

.sv-artifact-supporting {
  padding: clamp(12px, 2vw, 18px) 0 clamp(36px, 6vw, 56px);
}

.sv-artifact-gallery {
  display: grid;
  gap: 16px;
  align-items: start;
}

.sv-artifact-gallery--1  { grid-template-columns: 1fr; }
.sv-artifact-gallery--2  { grid-template-columns: 1fr 1fr; }
.sv-artifact-gallery--3  { grid-template-columns: repeat(3, 1fr); }

.sv-artifact-gallery figure {
  margin: 0;
}

.sv-artifact-gallery__img {
  width: 100%;
  height: auto;
  display: block;
}

.sv-artifact-gallery__caption {
  padding-top: 10px;
  font-size: var(--sv-xs);
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: rgba(250,248,244,0.5);
}

.sv-artifact-story {
  background: var(--sv-black);
  padding: clamp(14px, 3vw, 28px) 0 clamp(64px, 8vw, 96px);
}

.sv-artifact-story__inner {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.sv-artifact-story__rail {
  position: sticky;
  top: calc(88px + var(--sv-sp-md));
  padding-top: 0;
}

.sv-artifact-story__eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: var(--sv-xs);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-artifact-story__facts {
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sv-artifact-story__facts > div + div {
  margin-top: 14px;
}

.sv-artifact-story__facts dt {
  margin: 0 0 6px;
  font-size: var(--sv-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(250,248,244,0.42);
}

.sv-artifact-story__facts dd {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.7;
  color: rgba(250,248,244,0.82);
}

.sv-artifact-story__main {
  min-width: 0;
}

.sv-artifact-story__body {
  max-width: 68ch;
  font-size: clamp(1.68rem, 1.2vw, 1.88rem);
  line-height: 2;
  color: rgba(245,241,235,0.84);
}

.sv-artifact-story__body > p:first-child {
  position: relative;
  padding-left: 22px;
  border-left: 2px solid rgba(196,170,130,0.52);
  font-size: clamp(1.95rem, 1.8vw, 2.3rem);
  line-height: 1.65;
  color: rgba(250,248,244,0.92);
  max-width: 40ch;
  margin-bottom: 22px;
}

.sv-artifact-story__body p {
  margin: 0 0 1.6em;
}

.sv-artifact-story__body p + p {
  margin-top: 0.35em;
}

.sv-artifact-endcap {
  border-top: 1px solid rgba(255,255,255,0.06);
}

.sv-artifact-endcap__shell {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.sv-artifact-endcap__intro {
  max-width: 58ch;
}

.sv-artifact-endcap__eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  font-size: var(--sv-xs);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-artifact-endcap__title {
  margin: 0 0 16px;
  font-size: clamp(2.4rem, 3.6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--sv-warm-white);
}

.sv-artifact-endcap__copy {
  margin: 0;
  max-width: 44ch;
  font-size: 1.55rem;
  line-height: 1.85;
  color: rgba(250,248,244,0.7);
}

.sv-artifact-endcap__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.sv-artifact-endcap__related {
  margin-top: clamp(44px, 6vw, 72px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* ============================================================
   FOOTER
   ============================================================ */
.sv-footer {
  background: var(--sv-black);
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* ── Statement bar ─────────────────────────────────────────── */
.sv-footer__statement {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(56px, 7vw, 76px) var(--sv-sp-md) clamp(44px, 5vw, 56px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sv-footer__statement span {
  font-size: clamp(0.72rem, 1vw, 0.92rem);
  font-weight: 300;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: rgba(245, 241, 235, 0.34);
  text-align: center;
}

/* ── Brand anchor (seal + wordmark stacked) ────────────────── */
.sv-footer__brand {
  display: flex;
  justify-content: center;
  padding: clamp(72px, 9vw, 104px) var(--sv-sp-md) clamp(44px, 6vw, 64px);
}

.sv-footer__brand-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sv-sp-sm);
  text-decoration: none;
  transition: opacity 0.5s var(--sv-ease);
}

.sv-footer__brand-link:hover { opacity: 0.8; }

.sv-footer__brand-link:hover .sv-footer__seal {
  transform: rotate(-3deg) scale(1.04);
}

.sv-footer__seal {
  display: block !important;
  height: 180px !important;
  width: auto !important;
  max-width: none !important;
  max-height: none !important;
  object-fit: contain;
  opacity: 0.82;
  transition: opacity 0.6s var(--sv-ease), transform 1.1s var(--sv-ease);
}

.sv-footer__wordmark {
  font-size: var(--sv-sm);
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--sv-warm-white);
  opacity: 0.55;
}

/* ── Thin rule ─────────────────────────────────────────────── */
.sv-footer__rule {
  height: 1px;
  background: rgba(255,255,255,0.06);
  max-width: var(--sv-max);
  margin: 0 auto;
  width: calc(100% - 2 * var(--sv-sp-md));
}

/* ── Centered nav ──────────────────────────────────────────── */
.sv-footer__nav-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(28px, 4vw, 40px) var(--sv-sp-md);
  text-align: center;
}

.sv-footer__nav {
  display: flex;
  gap: var(--sv-sp-xl);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.sv-footer__nav li {
  display: flex;
  justify-content: center;
}

.sv-footer__nav a {
  display: inline-flex;
  justify-content: center;
  font-size: var(--sv-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  text-decoration: none;
  transition: color var(--sv-dur);
}

.sv-footer__nav a:hover {
  color: var(--sv-warm-white);
}

/* ── Bottom bar ────────────────────────────────────────────── */
.sv-footer__bottom {
  max-width: var(--sv-max);
  margin: 0 auto;
  padding: 20px var(--sv-sp-md) clamp(28px, 4vw, 40px);
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sv-sp-md);
  flex-wrap: wrap;
}

.sv-footer__copy {
  font-size: var(--sv-xs);
  color: rgba(122,122,112,0.45);
}

.sv-footer__legal {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--sv-sp-md);
}

.sv-footer__legal a,
.sv-footer__legal-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--sv-xs);
  line-height: 1;
  letter-spacing: 0.04em;
  color: rgba(122,122,112,0.45);
  text-decoration: none;
  transition: color var(--sv-dur);
}

.sv-footer__legal-button {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  text-transform: none;
  cursor: pointer;
}

.sv-footer__legal a:hover,
.sv-footer__legal-button:hover {
  color: var(--sv-muted-light);
}

.sv-page--artifact .sv-footer__statement {
  padding: clamp(36px, 5vw, 48px) var(--sv-sp-md) clamp(28px, 4vw, 36px);
}

.sv-page--artifact .sv-footer__brand {
  padding: clamp(42px, 6vw, 64px) var(--sv-sp-md) clamp(28px, 4vw, 40px);
}

.sv-page--artifact .sv-footer__seal {
  height: 132px !important;
}

.sv-page--artifact .sv-footer__nav-wrap {
  padding: clamp(22px, 3vw, 30px) var(--sv-sp-md);
}

.sv-page--artifact .sv-footer__bottom {
  padding: 16px var(--sv-sp-md) clamp(22px, 3vw, 28px);
}

/* ============================================================
   LEGAL PAGES (Privacy Policy & Proofing Legal)
   ============================================================ */
.sv-legal {
  background: var(--sv-black);
  min-height: 100vh;
}

/* ── Hero ───────────────────────────────────────────────────── */
.sv-legal__hero {
  background: var(--sv-surface);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding: 140px var(--sv-sp-md) 80px;    /* 140px = clear the fixed header */
}

.sv-legal__hero-inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 80px;
  align-items: start;
  max-width: var(--sv-max);
  margin: 0 auto;
}

.sv-legal__title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 200;
  letter-spacing: -0.01em;
  color: var(--sv-warm-white);
  margin: 8px 0 24px;
  line-height: 1.1;
}

.sv-legal__intro {
  font-size: var(--sv-base);
  color: rgba(255,255,255,0.6);
  font-weight: 300;
  line-height: 1.75;
  max-width: 54ch;
  margin-bottom: 28px;
}

.sv-legal__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sv-legal__pill {
  font-size: var(--sv-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 5px 14px;
  border-radius: 2px;
}

/* ── Summary card ───────────────────────────────────────────── */
.sv-legal__summary {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.1);
  border-left: 3px solid var(--sv-accent);
  padding: 28px 32px;
  border-radius: 2px;
  margin-top: 8px;
}

.sv-legal__summary-label {
  font-size: var(--sv-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sv-accent);
  margin-bottom: 14px;
}

.sv-legal__summary-copy {
  font-size: var(--sv-sm);
  color: rgba(255,255,255,0.75);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 18px;
}

.sv-legal__summary-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sv-legal__summary-list li {
  font-size: var(--sv-xs);
  color: rgba(255,255,255,0.5);
  padding-left: 18px;
  position: relative;
  line-height: 1.5;
}

.sv-legal__summary-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--sv-accent);
}

/* ── Legal grid ─────────────────────────────────────────────── */
.sv-legal__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.06);
  margin: 80px 0 100px;
}

.sv-legal__card {
  background: var(--sv-black);
  padding: 48px 40px;
}

.sv-legal__card--full {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  gap: 60px;
  align-items: flex-start;
}

.sv-legal__card--full > * {
  flex: 1;
}

.sv-legal__card h2 {
  font-size: var(--sv-base);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--sv-warm-white);
  margin-bottom: 16px;
}

.sv-legal__card p {
  font-size: var(--sv-base);
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  font-weight: 300;
}

.sv-legal__card p + p {
  margin-top: 14px;
}

.sv-legal__actions {
  margin-top: 24px;
}

.sv-legal__contact {
  margin-top: 14px;
  line-height: 2;
}

.sv-legal__contact a,
.sv-legal__inline-link {
  color: var(--sv-accent);
  text-decoration: none;
  font-size: var(--sv-sm);
  transition: opacity var(--sv-dur);
}

.sv-legal__contact a:hover,
.sv-legal__inline-link:hover { opacity: 0.7; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 960px) {
  .sv-legal__hero { padding: 100px var(--sv-sp-md) 60px; }
  .sv-legal__hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .sv-legal__grid { grid-template-columns: 1fr; }
  .sv-legal__card--full { grid-column: 1; flex-direction: column; gap: 24px; }
  .sv-legal__card { padding: 36px 24px; }
}

/* ============================================================
   RELATED CONTENT RAIL
   ============================================================ */
.sv-related {
  padding: var(--sv-sp-xl) var(--sv-sp-md);
  background: var(--sv-surface);
}

.sv-related__heading {
  font-size: var(--sv-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sv-accent);
  margin-bottom: var(--sv-sp-md);
}

.sv-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sv-sp-md);
}

.sv-related-item {
  position: relative;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--sv-sp-xs);
}

.sv-related-item__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--sv-surface-mid);
}

.sv-related-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--sv-ease);
}

.sv-related-item:hover .sv-related-item__img img {
  transform: scale(1.05);
}

.sv-related-item__type {
  font-size: var(--sv-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sv-accent);
}

.sv-related-item__title {
  font-size: var(--sv-base);
  font-weight: 500;
  color: var(--sv-warm-white);
  line-height: 1.35;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.sv-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--sv-sp-xs);
  font-size: var(--sv-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sv-muted);
  margin-bottom: var(--sv-sp-md);
}

.sv-breadcrumb a {
  color: var(--sv-muted);
  text-decoration: none;
  transition: color var(--sv-dur);
}

.sv-breadcrumb a:hover {
  color: var(--sv-warm-white);
}

.sv-breadcrumb__sep {
  color: rgba(122,122,112,0.4);
}

/* ============================================================
   MOBILE
   ============================================================ */
@media (max-width: 960px) {
  .sv-artifact-header {
    padding-top: 112px;
    padding-bottom: 40px;
  }

  .sv-artifact-header__title {
    max-width: none;
  }

  .sv-artifact-visual__caption {
    grid-template-columns: 1fr;
  }

  .sv-artifact-visual__caption {
    gap: 6px;
  }

  .sv-artifact-supporting {
    padding: 8px 0 28px;
  }

  .sv-artifact-gallery {
    gap: 16px;
  }

  .sv-artifact-gallery--2,
  .sv-artifact-gallery--3 {
    grid-template-columns: 1fr;
  }

  .sv-artifact-story {
    padding-top: 0;
  }

  .sv-artifact-story__inner,
  .sv-artifact-endcap__shell {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .sv-artifact-story__rail {
    position: static;
    top: auto;
  }

  .sv-artifact-story__body,
  .sv-artifact-story__body > p:first-child,
  .sv-artifact-endcap__copy {
    max-width: none;
  }

  .sv-artifact-story__body > p:first-child {
    padding-left: 16px;
  }

  .sv-artifact-story__body {
    line-height: 1.9;
  }

  .sv-artifact-endcap__actions {
    width: 100%;
  }

  .sv-artifact-endcap__actions .sv-btn {
    width: 100%;
    justify-content: center;
  }

  .sv-page--artifact .sv-footer__statement {
    padding-top: 28px;
    padding-bottom: 22px;
  }

  .sv-page--artifact .sv-footer__brand {
    padding-top: 28px;
    padding-bottom: 22px;
  }

  .sv-page--artifact .sv-footer__seal {
    height: 96px !important;
  }

  .sv-header__nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: var(--sv-sp-lg);
    position: fixed;
    inset: 0;
    width: 100vw;
    min-height: 100dvh;
    padding: calc(64px + var(--sv-sp-lg)) var(--sv-sp-md) var(--sv-sp-xl);
    background: var(--sv-black);
    z-index: 1000;
    overflow-y: auto;
    /* closed state */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.45s var(--sv-ease),
                visibility 0.45s,
                transform 0.45s var(--sv-ease);
  }

  .sv-header__nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  /* Staggered link reveal */
  .sv-header__nav li {
    width: 100%;
    text-align: center;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.4s var(--sv-ease), transform 0.4s var(--sv-ease);
  }
  .sv-header__nav.is-open li:nth-child(1) { opacity:1; transform:none; transition-delay: 0.08s; }
  .sv-header__nav.is-open li:nth-child(2) { opacity:1; transform:none; transition-delay: 0.13s; }
  .sv-header__nav.is-open li:nth-child(3) { opacity:1; transform:none; transition-delay: 0.18s; }
  .sv-header__nav.is-open li:nth-child(4) { opacity:1; transform:none; transition-delay: 0.23s; }
  .sv-header__nav.is-open li:nth-child(5) { opacity:1; transform:none; transition-delay: 0.28s; }
  .sv-header__nav.is-open li:nth-child(6) { opacity:1; transform:none; transition-delay: 0.33s; }
  .sv-header__nav.is-open li:nth-child(7) { opacity:1; transform:none; transition-delay: 0.38s; }

  .sv-header__nav a {
    font-size: clamp(1.6rem, 7vw, 2.6rem);
    font-weight: 200;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--sv-warm-white);
    text-shadow: 0 1px 0 rgba(0,0,0,0.25);
  }

  .sv-header__nav .sv-nav-cta a {
    border-color: rgba(196,170,130,0.5);
    padding: 10px 28px;
  }

  .sv-language-switcher {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
  }

  .sv-language-switcher a,
  .sv-language-switcher span {
    color: rgba(250,248,244,0.92) !important;
  }

  .sv-header__toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    position: relative;
    padding: 8px;
    cursor: pointer;
  }

  .sv-study-grid {
    grid-template-columns: 1fr;
  }

  .sv-study-card--featured {
    aspect-ratio: 4/3;
  }

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

  .sv-world-doors {
    grid-template-columns: 1fr;
  }

  .sv-row {
    flex-direction: column;
  }

  .sv-col-2,
  .sv-col-3,
  .sv-col-4 {
    flex: none;
    max-width: 100%;
    width: 100%;
  }

  .sv-note-row {
    grid-template-columns: 1fr;
  }

  .sv-note-row__date {
    display: none;
  }

  .sv-form__row {
    grid-template-columns: 1fr;
  }

  .sv-footer__inner {
    grid-template-columns: 1fr;
  }

  .sv-hero--study .sv-hero__content {
    padding-bottom: 40px;
  }

  .sv-study-meta-bar .sv-study-header__meta {
    gap: 14px 20px;
    padding: 14px 0;
  }

  .sv-study-note {
    padding: 56px var(--sv-sp-md) 40px;
  }

  .sv-study-note__content {
    padding: 24px;
  }

  .sv-study-note__title {
    font-size: clamp(2.1rem, 9vw, 4rem);
    margin-bottom: 18px;
  }

  .sv-study-note__body {
    font-size: 1.45rem;
    line-height: 1.8;
  }

  .sv-study-series-nav__inner {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .sv-study-series-nav__actions,
  .sv-series-parts__cta {
    justify-content: flex-start;
  }

  .sv-study-split {
    padding: var(--sv-sp-lg) var(--sv-sp-md);
  }

  .sv-study-split__inner {
    grid-template-columns: 1fr;
    gap: var(--sv-sp-md);
  }

  .sv-study-split__copy,
  .sv-study-split__media {
    max-width: 100%;
  }

  .sv-study-split__media {
    order: 2;
  }

  .sv-block-essay {
    padding: 48px var(--sv-sp-md);
  }

  .sv-block-gallery {
    padding: 0 var(--sv-sp-md) 64px;
  }

  .sv-block-gallery__grid,
  .sv-block-gallery__grid--2,
  .sv-block-gallery__grid--3,
  .sv-block-gallery__grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sv-block-gallery__item--wide,
  .sv-block-gallery__item--large,
  .sv-block-gallery__item--natural {
    grid-column: 1 / -1;
  }

  .sv-block-sequence {
    padding: 0 var(--sv-sp-md) 64px;
  }

  .sv-block-sequence__track {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    overflow: visible;
    scroll-snap-type: none;
    -webkit-overflow-scrolling: auto;
  }

  .sv-block-sequence__item {
    width: 100%;
  }

  .sv-footer__brand {
    padding-top: 64px;
  }

  .sv-footer__seal {
    height: 136px !important;
  }
}

@media (max-width: 600px) {
  .sv-hero__title {
    font-size: clamp(3.2rem, 10vw, 4.8rem);
  }

  .sv-artifact-grid {
    grid-template-columns: 1fr;
  }

  .sv-study-note {
    padding: 48px 20px 32px;
  }

  .sv-study-note__content {
    padding: 20px;
  }

  .sv-study-note__body {
    font-size: 1.35rem;
  }

  .sv-study-series-nav {
    padding-top: 36px;
    padding-bottom: 56px;
  }

  .sv-study-series-nav__inner {
    padding: 20px;
  }

  .sv-study-series-nav__actions,
  .sv-series-parts__cta {
    width: 100%;
  }

  .sv-study-series-nav__actions .sv-btn,
  .sv-series-parts__cta .sv-btn {
    width: 100%;
    justify-content: center;
  }

  .sv-block-gallery__grid--2,
  .sv-block-gallery__grid--3,
  .sv-block-gallery__grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .sv-block-gallery__grid,
  .sv-block-gallery__item,
  .sv-block-gallery__item--wide,
  .sv-block-gallery__item--tall,
  .sv-block-gallery__item--large,
  .sv-block-gallery__item--natural {
    grid-column: 1 / -1 !important;
    justify-self: stretch !important;
    width: 100% !important;
    max-width: none !important;
  }

  .sv-footer__statement {
    padding: 40px 20px 32px;
  }

  .sv-footer__brand {
    padding: 56px 20px 36px;
  }
}

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes sv-kenburns {
  from { transform: scale(1.0) translate(0, 0); }
  to   { transform: scale(1.07) translate(-1%, -1%); }
}

@keyframes sv-scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { transform: scaleY(1); transform-origin: top; opacity: 0; }
}

@keyframes sv-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

@keyframes sv-shimmer-slide {
  0%   { background-position: -300% center; }
  100% { background-position:  300% center; }
}

/* ============================================================
   ANIMATIONS  (respects prefers-reduced-motion)
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {

  /* ── Hero media: slow ken-burns drift ─────────────────────── */
  .sv-hero__media img,
  .sv-hero__media video {
    animation: sv-kenburns 22s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate;
    transform-origin: center center;
    will-change: transform;
  }

  /* ── Hero scroll indicator ──────────────────────────────────── */
  .sv-hero__scroll::after {
    animation: sv-scroll-line 2.4s var(--sv-ease-in) infinite;
  }

  /* ── Reveal atoms ───────────────────────────────────────────── */

  /* fade-up: main scroll reveal — blur softens into sharp as it rises */
  .sv-fade-up {
    opacity: 0;
    transform: translateY(40px);
    filter: blur(8px);
    transition:
      opacity   1.1s var(--sv-ease),
      transform 1.1s var(--sv-ease),
      filter    0.9s var(--sv-ease);
  }
  .sv-fade-up.is-visible {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }

  /* fade-in: pure opacity, no movement */
  .sv-fade-in {
    opacity: 0;
    transition: opacity 1.4s var(--sv-ease);
  }
  .sv-fade-in.is-visible { opacity: 1; }

  /* reveal-left: slides in from left */
  .sv-reveal-left {
    opacity: 0;
    transform: translateX(-32px);
    transition: opacity 1s var(--sv-ease), transform 1s var(--sv-ease);
  }
  .sv-reveal-left.is-visible { opacity: 1; transform: none; }

  /* ── Manual timing offsets ───────────────────────────────────── */
  [data-sv-delay="1"] { transition-delay:  80ms !important; }
  [data-sv-delay="2"] { transition-delay: 200ms !important; }
  [data-sv-delay="3"] { transition-delay: 340ms !important; }
  [data-sv-delay="4"] { transition-delay: 500ms !important; }
  [data-sv-delay="5"] { transition-delay: 680ms !important; }

  /* ── Stagger: parent gets .is-visible, children cascade ─────── */
  .sv-stagger > * {
    opacity: 0;
    transform: translateY(28px);
    filter: blur(4px);
    transition:
      opacity   0.9s var(--sv-ease),
      transform 0.9s var(--sv-ease),
      filter    0.7s var(--sv-ease);
  }
  .sv-stagger.is-visible > *:nth-child(1)  { opacity:1; transform:none; filter:blur(0); transition-delay:   0ms; }
  .sv-stagger.is-visible > *:nth-child(2)  { opacity:1; transform:none; filter:blur(0); transition-delay:  90ms; }
  .sv-stagger.is-visible > *:nth-child(3)  { opacity:1; transform:none; filter:blur(0); transition-delay: 180ms; }
  .sv-stagger.is-visible > *:nth-child(4)  { opacity:1; transform:none; filter:blur(0); transition-delay: 270ms; }
  .sv-stagger.is-visible > *:nth-child(5)  { opacity:1; transform:none; filter:blur(0); transition-delay: 360ms; }
  .sv-stagger.is-visible > *:nth-child(6)  { opacity:1; transform:none; filter:blur(0); transition-delay: 450ms; }

  /* ── Divider line-draw ───────────────────────────────────────── */
  .sv-divider {
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 1.4s var(--sv-ease);
  }
  .sv-divider.is-visible { transform: scaleX(1); }

  /* ── Image card hovers ───────────────────────────────────────── */
  .sv-study-card {
    transition: box-shadow 0.9s var(--sv-ease);
    will-change: transform;
  }
  .sv-study-card:hover {
    box-shadow: 0 28px 64px rgba(0,0,0,0.55);
  }
  .sv-study-card__img {
    transition: transform 1.4s var(--sv-ease) !important;
  }
  .sv-study-card:hover .sv-study-card__img {
    transform: scale(1.05) !important;
  }

  .sv-artifact-card {
    transition: box-shadow 0.9s var(--sv-ease);
    will-change: transform;
  }
  .sv-artifact-card:hover {
    box-shadow: 0 24px 56px rgba(0,0,0,0.5);
  }
  .sv-artifact-card__img {
    transition: transform 1.3s var(--sv-ease) !important;
  }
  .sv-artifact-card:hover .sv-artifact-card__img {
    transform: scale(1.05) !important;
  }

  /* ── Button: lift + glow ─────────────────────────────────────── */
  .sv-btn {
    transition:
      background    0.65s var(--sv-ease),
      color         0.65s var(--sv-ease),
      border-color  0.65s var(--sv-ease),
      transform     0.45s var(--sv-ease),
      box-shadow    0.65s var(--sv-ease) !important;
  }
  .sv-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(196, 170, 130, 0.15);
  }
  .sv-btn:active { transform: translateY(0); }

  /* ── World door ──────────────────────────────────────────────── */
  .sv-world-door {
    transition:
      background  0.85s var(--sv-ease),
      box-shadow  0.85s var(--sv-ease) !important;
  }
  .sv-world-door:hover {
    box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  }
  .sv-world-door__arrow {
    transition: transform 0.75s var(--sv-ease) !important;
  }
  .sv-world-door:hover .sv-world-door__arrow {
    transform: translateX(10px);
  }

  /* ── Note row ────────────────────────────────────────────────── */
  .sv-note-row {
    transition:
      padding-left 0.75s var(--sv-ease),
      border-color 0.75s var(--sv-ease) !important;
  }

  /* ── Nav links ───────────────────────────────────────────────── */
  .sv-header__nav a {
    transition:
      color          0.5s var(--sv-ease),
      letter-spacing 0.5s var(--sv-ease) !important;
  }
  .sv-header__nav a:hover { letter-spacing: 0.18em; }

  /* ── Header transition ───────────────────────────────────────── */
  .sv-header {
    transition:
      background     0.6s var(--sv-ease),
      border-color   0.6s var(--sv-ease),
      backdrop-filter 0.6s var(--sv-ease) !important;
  }

  /* ── Accent eyebrow shimmer on hover ─────────────────────────── */
  .sv-section__eyebrow,
  .sv-page-header__eyebrow,
  .sv-hero__eyebrow {
    transition: letter-spacing 0.8s var(--sv-ease);
  }

  /* ── Parallax: hero media moves slower than scroll ───────────── */
  .sv-hero__media {
    transform: translateY(var(--sv-parallax, 0px));
    transition: transform 0.05s linear;
    will-change: transform;
  }

}

@media (max-width: 960px), (pointer: coarse), (prefers-reduced-motion: reduce) {
  /* On mobile and reduced-motion contexts, never leave reveal targets hidden
     while waiting for JavaScript or intersection timing. */
  .sv-fade-up,
  .sv-fade-in,
  .sv-reveal-left {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }

  .sv-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition-delay: 0ms !important;
  }

  .sv-divider {
    transform: scaleX(1) !important;
  }
}

@media (prefers-reduced-motion: no-preference) and (hover: hover) and (pointer: fine) {
  .sv-study-card,
  .sv-artifact-card,
  .sv-world-door,
  .sv-related-item {
    transform:
      perspective(1400px)
      rotateX(var(--sv-tilt-y, 0deg))
      rotateY(var(--sv-tilt-x, 0deg))
      translate3d(0, 0, 0);
    transform-style: preserve-3d;
    will-change: transform, box-shadow;
    transition:
      transform 0.72s var(--sv-ease),
      box-shadow 0.72s var(--sv-ease),
      border-color 0.72s var(--sv-ease),
      background 0.72s var(--sv-ease);
  }

  .sv-study-card::before,
  .sv-artifact-card::before,
  .sv-world-door::before,
  .sv-related-item::before,
  .sv-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
    transition:
      opacity 0.4s var(--sv-ease),
      transform 0.55s var(--sv-ease);
  }

  .sv-study-card::before,
  .sv-artifact-card::before,
  .sv-world-door::before,
  .sv-related-item::before {
    background:
      radial-gradient(circle at var(--sv-hover-x, 50%) var(--sv-hover-y, 50%), rgba(250, 248, 244, 0.16), transparent 42%);
    transform: scale(0.94);
  }

  .sv-study-card:hover,
  .sv-study-card.is-hovering,
  .sv-study-card:focus-visible {
    box-shadow: 0 30px 72px rgba(0, 0, 0, 0.52);
  }

  .sv-study-card:hover::before,
  .sv-study-card.is-hovering::before,
  .sv-study-card:focus-visible::before,
  .sv-artifact-card:hover::before,
  .sv-artifact-card.is-hovering::before,
  .sv-artifact-card:focus-visible::before,
  .sv-world-door:hover::before,
  .sv-world-door.is-hovering::before,
  .sv-world-door:focus-visible::before,
  .sv-related-item:hover::before,
  .sv-related-item.is-hovering::before,
  .sv-related-item:focus-visible::before {
    opacity: 1;
    transform: scale(1);
  }

  .sv-study-card__img {
    transition: transform 1.2s var(--sv-ease) !important;
  }

  .sv-study-card:hover .sv-study-card__img,
  .sv-study-card.is-hovering .sv-study-card__img,
  .sv-study-card:focus-visible .sv-study-card__img {
    transform: scale(1.075) translateZ(0) !important;
  }

  .sv-study-card__body {
    transform: translateY(0);
    transition: transform 0.55s var(--sv-ease);
  }

  .sv-study-card:hover .sv-study-card__body,
  .sv-study-card.is-hovering .sv-study-card__body,
  .sv-study-card:focus-visible .sv-study-card__body {
    transform: translateY(-6px);
  }

  .sv-study-card__type,
  .sv-study-card__title {
    transition:
      color 0.45s var(--sv-ease),
      transform 0.45s var(--sv-ease);
  }

  .sv-study-card:hover .sv-study-card__type,
  .sv-study-card.is-hovering .sv-study-card__type,
  .sv-study-card:focus-visible .sv-study-card__type {
    transform: translateY(-2px);
  }

  .sv-study-card:hover .sv-study-card__title,
  .sv-study-card.is-hovering .sv-study-card__title,
  .sv-study-card:focus-visible .sv-study-card__title {
    color: var(--sv-cream);
  }

  .sv-study-card__excerpt {
    display: block;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(10px);
    transition:
      max-height 0.5s var(--sv-ease),
      opacity 0.4s var(--sv-ease),
      transform 0.4s var(--sv-ease);
  }

  .sv-study-card:hover .sv-study-card__excerpt,
  .sv-study-card.is-hovering .sv-study-card__excerpt,
  .sv-study-card:focus-visible .sv-study-card__excerpt {
    max-height: 120px;
    opacity: 1;
    transform: translateY(0);
  }

  .sv-artifact-card:hover,
  .sv-artifact-card.is-hovering,
  .sv-artifact-card:focus-visible {
    box-shadow: 0 24px 58px rgba(0, 0, 0, 0.46);
  }

  .sv-artifact-card__img {
    transition: transform 1.1s var(--sv-ease) !important;
  }

  .sv-artifact-card:hover .sv-artifact-card__img,
  .sv-artifact-card.is-hovering .sv-artifact-card__img,
  .sv-artifact-card:focus-visible .sv-artifact-card__img {
    transform: scale(1.08) translateZ(0) !important;
  }

  .sv-artifact-card__overlay {
    transition:
      background 0.5s var(--sv-ease),
      opacity 0.5s var(--sv-ease);
  }

  .sv-artifact-card:hover .sv-artifact-card__overlay,
  .sv-artifact-card.is-hovering .sv-artifact-card__overlay,
  .sv-artifact-card:focus-visible .sv-artifact-card__overlay {
    background: linear-gradient(to top, rgba(10, 10, 10, 0.72) 0%, rgba(10, 10, 10, 0.08) 72%);
  }

  .sv-artifact-card__label {
    transform: translateY(10px);
    transition:
      opacity 0.35s var(--sv-ease),
      transform 0.35s var(--sv-ease);
  }

  .sv-artifact-card:hover .sv-artifact-card__label,
  .sv-artifact-card.is-hovering .sv-artifact-card__label,
  .sv-artifact-card:focus-visible .sv-artifact-card__label {
    opacity: 1;
    transform: translateY(0);
  }

  .sv-related-item {
    padding-bottom: 2px;
  }

  .sv-related-item__img img {
    transition: transform 0.85s var(--sv-ease);
  }

  .sv-related-item:hover .sv-related-item__img img,
  .sv-related-item.is-hovering .sv-related-item__img img,
  .sv-related-item:focus-visible .sv-related-item__img img {
    transform: scale(1.08);
  }

  .sv-related-item__title {
    transition:
      color 0.4s var(--sv-ease),
      transform 0.4s var(--sv-ease);
  }

  .sv-related-item:hover .sv-related-item__title,
  .sv-related-item.is-hovering .sv-related-item__title,
  .sv-related-item:focus-visible .sv-related-item__title {
    color: var(--sv-cream);
    transform: translateY(-2px);
  }

  .sv-btn {
    transition:
      background 0.65s var(--sv-ease),
      color 0.65s var(--sv-ease),
      border-color 0.65s var(--sv-ease),
      transform 0.45s var(--sv-ease),
      box-shadow 0.65s var(--sv-ease);
  }

  .sv-btn::before {
    inset: -1px;
    background: linear-gradient(115deg, transparent 14%, rgba(250, 248, 244, 0.16) 46%, transparent 72%);
    transform: translateX(-120%);
  }

  .sv-btn:hover,
  .sv-btn:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 14px 36px rgba(196, 170, 130, 0.16);
  }

  .sv-btn:hover::before,
  .sv-btn:focus-visible::before {
    opacity: 1;
    transform: translateX(120%);
    transition-duration: 0.95s;
  }

  .sv-btn:active {
    transform: translateY(0);
  }

  .sv-world-door {
    transition:
      background 0.75s var(--sv-ease),
      transform 0.75s var(--sv-ease),
      box-shadow 0.75s var(--sv-ease);
  }

  .sv-world-door:hover,
  .sv-world-door.is-hovering,
  .sv-world-door:focus-visible {
    background: linear-gradient(180deg, rgba(40, 40, 40, 0.96), rgba(28, 28, 28, 1));
    box-shadow: 0 26px 64px rgba(0, 0, 0, 0.44);
  }

  .sv-world-door__arrow,
  .sv-world-door__name,
  .sv-world-door__desc {
    transition:
      transform 0.55s var(--sv-ease),
      color 0.55s var(--sv-ease);
  }

  .sv-world-door:hover .sv-world-door__name,
  .sv-world-door.is-hovering .sv-world-door__name,
  .sv-world-door:focus-visible .sv-world-door__name {
    color: var(--sv-cream);
    transform: translateY(-2px);
  }

  .sv-world-door:hover .sv-world-door__desc,
  .sv-world-door.is-hovering .sv-world-door__desc,
  .sv-world-door:focus-visible .sv-world-door__desc {
    color: rgba(250, 248, 244, 0.78);
  }

  .sv-world-door:hover .sv-world-door__arrow,
  .sv-world-door.is-hovering .sv-world-door__arrow,
  .sv-world-door:focus-visible .sv-world-door__arrow {
    transform: translateX(10px);
  }

  .sv-note-row {
    transition:
      padding-left 0.5s var(--sv-ease),
      border-color 0.5s var(--sv-ease),
      transform 0.5s var(--sv-ease);
  }

  .sv-note-row::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 18px;
    height: 1px;
    background: rgba(196, 170, 130, 0.68);
    transform: translateY(-50%) scaleX(0);
    transform-origin: left center;
    transition: transform 0.45s var(--sv-ease);
  }

  .sv-note-row:hover,
  .sv-note-row:focus-visible {
    padding-left: 14px;
    border-color: rgba(196, 170, 130, 0.22);
  }

  .sv-note-row:hover::before,
  .sv-note-row:focus-visible::before {
    transform: translateY(-50%) scaleX(1);
  }

  .sv-note-row__title,
  .sv-note-row__subtitle,
  .sv-note-row__date {
    transition:
      color 0.4s var(--sv-ease),
      transform 0.4s var(--sv-ease);
  }

  .sv-note-row:hover .sv-note-row__title,
  .sv-note-row:focus-visible .sv-note-row__title {
    color: var(--sv-cream);
    transform: translateX(4px);
  }

  .sv-note-row:hover .sv-note-row__subtitle,
  .sv-note-row:focus-visible .sv-note-row__subtitle {
    color: rgba(250, 248, 244, 0.68);
  }

  .sv-note-row:hover .sv-note-row__date,
  .sv-note-row:focus-visible .sv-note-row__date {
    color: var(--sv-accent);
  }

  .sv-header__nav a {
    transition:
      color 0.5s var(--sv-ease),
      opacity 0.5s var(--sv-ease);
  }

  .sv-header__nav a:hover,
  .sv-header__nav a:focus-visible {
    letter-spacing: 0.12em !important;
    opacity: 1;
  }
}