@font-face {
  font-family: 'Instrument Serif';
  src: url('assets/fonts/instrument-serif-regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Instrument Serif';
  src: url('assets/fonts/instrument-serif-italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('assets/fonts/manrope-regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Manrope';
  src: url('assets/fonts/manrope-bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Space Grotesk';
  src: url('assets/fonts/space-grotesk-bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #EAE6DD;
  --bg-glass: rgba(234, 230, 221, 0.86);
  --surface: #F4F1EA;
  --surface-2: #E2DDD2;
  --ink: #141413;
  --ink-soft: #57534C;
  --ink-muted: #5F5A51;
  --dark-bg: #141413;
  --dark-surface: #1D1C1A;
  --dark-ink: #EAE6DD;
  --dark-muted: #B6AFA3;
  --accent: #D94E1F;
  --accent-bright: #FF6B35;
  --accent-soft: rgba(217, 78, 31, 0.1);
  --line: rgba(20, 20, 19, 0.14);
  --line-strong: rgba(20, 20, 19, 0.34);
  --line-dark: rgba(234, 230, 221, 0.18);
  --font-display: 'Space Grotesk', 'Manrope', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-cjk-serif: 'Instrument Serif', 'Songti SC', 'Source Han Serif SC', 'Noto Serif SC', 'STSong', 'SimSun', Georgia, serif;
  --font-sans: 'Manrope', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --container: 1360px;
  --gutter: clamp(18px, 3.2vw, 48px);
  --header-h: 72px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: clip;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[data-motion="off"] {
  scroll-behavior: auto;
}

html[data-preloader="active"] body,
body.modal-open,
body.drawer-open {
  overflow: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--ink);
  overflow-x: clip;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.container {
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 700;
  transition: top 0.2s var(--ease-out);
}

.skip-link:focus {
  top: 16px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.eyebrow__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent);
  flex: none;
}

.eyebrow--light {
  color: var(--dark-muted);
}

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

main section[id] {
  scroll-margin-top: calc(var(--header-h) + 8px);
}

main section#gallery {
  scroll-margin-top: 0;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    transform 0.25s var(--ease-out),
    background-color 0.25s var(--ease-out),
    border-color 0.25s var(--ease-out),
    color 0.25s var(--ease-out);
}

.btn--primary {
  background-color: var(--ink);
  color: var(--bg);
  border: 1px solid var(--ink);
}

.btn--primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn--ghost {
  background-color: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}

.btn--ghost:hover {
  background-color: var(--surface);
  border-color: var(--ink);
  transform: translateY(-2px);
}

.btn--light {
  background-color: var(--dark-ink);
  color: var(--dark-bg);
  border: 1px solid var(--dark-ink);
}

.btn--light:hover {
  background-color: var(--accent-bright);
  border-color: var(--accent-bright);
  color: var(--dark-bg);
  transform: translateY(-2px);
}

/* ===========================
   Magnetic Custom Cursor (Fine pointer + Motion on)
   =========================== */
.cursor {
  display: none;
}

@media (min-width: 960px) and (hover: hover) and (pointer: fine) {
  html[data-motion="on"][data-custom-cursor="on"],
  html[data-motion="on"][data-custom-cursor="on"] *,
  html[data-motion="on"][data-custom-cursor="on"] *::before,
  html[data-motion="on"][data-custom-cursor="on"] *::after {
    cursor: none !important;
  }

  html[data-motion="on"] .cursor {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 990;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
  }

  html[data-motion="on"] .cursor.is-visible {
    opacity: 1;
  }

  .cursor__dot {
    position: absolute;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--accent);
    transform: translate(-50%, -50%);
    transition: transform 0.2s var(--ease-out), opacity 0.2s ease;
  }

  .cursor__ring {
    position: absolute;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(20, 20, 19, 0.36);
    transform: translate(-50%, -50%);
    transition:
      width 0.28s var(--ease-out),
      height 0.28s var(--ease-out),
      background-color 0.28s var(--ease-out),
      border-color 0.28s var(--ease-out);
  }

  body.modal-open .cursor__ring,
  html[data-preloader="active"] .cursor__ring {
    border-color: rgba(234, 230, 221, 0.52);
  }

  .cursor__label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #fff;
    opacity: 0;
    transition: opacity 0.2s ease;
    white-space: nowrap;
  }

  .cursor.is-interactive .cursor__dot {
    transform: translate(-50%, -50%) scale(1.25);
  }

  .cursor.is-interactive .cursor__ring {
    width: 44px;
    height: 44px;
    border-color: var(--accent);
    background-color: rgba(217, 78, 31, 0.1);
  }

  .cursor.is-active .cursor__dot {
    opacity: 0;
  }

  .cursor.is-active .cursor__ring {
    width: 68px;
    height: 68px;
    background-color: rgba(20, 20, 19, 0.88);
    border-color: var(--accent);
  }

  .cursor.is-active .cursor__label {
    opacity: 1;
  }
}

/* ===========================
   Preloader Curtain
   =========================== */
.preloader {
  display: none;
}

html[data-preloader="active"] .preloader,
.preloader.is-visible {
  position: fixed;
  inset: 0;
  z-index: 980;
  display: flex;
  background-color: var(--dark-bg);
  color: var(--dark-ink);
  clip-path: inset(0% 0% 0% 0%);
}

.preloader__inner {
  width: min(var(--container), calc(100% - var(--gutter) * 2));
  margin: auto;
  min-height: min(620px, 84vh);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 0;
}

.preloader__top,
.preloader__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.preloader__brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.preloader__meta {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--dark-muted);
}

.preloader__center {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.preloader__index {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--accent-bright);
}

.preloader__counter {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 18vw, 11rem);
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  color: var(--dark-ink);
}

.preloader__bar {
  flex: 1;
  height: 1px;
  background-color: var(--line-dark);
  overflow: hidden;
}

.preloader__fill {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--accent-bright);
  transform-origin: left center;
  transform: scaleX(0);
}

.preloader__skip {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  color: var(--dark-ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ===========================
   Header Navigation & Mobile Drawer
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 800;
  height: var(--header-h);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}

.brand__mark {
  display: grid;
  place-items: center;
  flex: none;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.015em;
}

.brand__sub {
  padding-left: 10px;
  border-left: 1px solid var(--line-strong);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.6vw, 34px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 40px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  height: 1px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.28s var(--ease-out);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

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

.menu-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 700;
}

.menu-toggle__lines {
  display: grid;
  gap: 4px;
  width: 16px;
}

.menu-toggle__lines span {
  display: block;
  height: 1.5px;
  background-color: var(--ink);
}

.mobile-drawer {
  position: fixed;
  inset: 0;
  z-index: 900;
  background-color: var(--dark-bg);
  color: var(--dark-ink);
  overflow-y: auto;
}

.mobile-drawer[hidden] {
  display: none;
}

.mobile-drawer__inner {
  min-height: 100%;
  padding-block: 24px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
}

.mobile-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-dark);
}

.mobile-drawer__head .eyebrow {
  margin-bottom: 0;
}

.drawer-close {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  color: var(--dark-ink);
}

.mobile-drawer__nav {
  display: grid;
  margin-block: auto;
}

.drawer-link {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: clamp(1.45rem, 6vw, 2.2rem);
  font-weight: 700;
}

.drawer-link__num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--dark-muted);
}

.drawer-link--accent {
  color: var(--accent-bright);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
  position: relative;
  z-index: 1;
  background-color: var(--bg);
  overflow: clip;
  padding-block: clamp(36px, 5.5vh, 72px) clamp(44px, 6.5vh, 84px);
  border-bottom: 1px solid var(--line);
}

.hero__shader {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.55;
  -webkit-mask-image: linear-gradient(to bottom, #000 58%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 58%, transparent 100%);
  z-index: 0;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
  align-items: center;
  gap: clamp(28px, 4.5vw, 72px);
}

.hero__title {
  margin: 0;
  font-size: clamp(3.3rem, 7.6vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.hero__sans {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
}

.hero__serif {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.hero__lead {
  margin: clamp(18px, 2.6vh, 28px) 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  line-height: 1.75;
  color: var(--ink-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.2vh, 34px);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: clamp(28px, 4.2vh, 48px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.meta-cell dt {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.meta-cell dd {
  margin: 4px 0 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
}

.hero__stage {
  display: flex;
  justify-content: flex-end;
}

.plinth-frame {
  width: 100%;
  max-width: 540px;
  margin: 0;
  padding: 14px 16px 16px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 54px rgba(20, 20, 19, 0.08);
  transition: transform 0.35s var(--ease-out);
}

.plinth-frame__marks,
.plinth-frame__caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.plinth-frame__marks {
  margin-bottom: 10px;
}

.plinth-frame__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--surface-2);
  aspect-ratio: 4 / 3;
}

.plinth-frame__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
  transition: transform 0.45s var(--ease-out);
  will-change: transform;
}

.plinth-frame__caption {
  margin-top: 12px;
}

/* ===========================
   Horizontal Exhibition Gallery
   =========================== */
.gallery-section {
  position: relative;
  z-index: 2;
  background-color: var(--bg);
  border-bottom: 1px solid var(--line);
}

.gallery-stage {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(32px, 4.5vh, 52px);
  background-color: var(--bg);
}

@media (min-width: 960px) {
  html[data-motion="on"] .gallery-section {
    height: var(--gallery-runway, auto);
  }

  html[data-motion="on"] .gallery-stage {
    position: sticky;
    top: 0;
    height: 100vh;
    min-height: 620px;
    padding-top: calc(var(--header-h) + 22px);
    padding-bottom: 28px;
    overflow: hidden;
  }
}

.gallery-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.section-title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.section-title .serif-em {
  font-size: 1.08em;
  color: var(--accent);
  padding-left: 0.08em;
}

.gallery-head__right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.gallery-hint {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.gallery-controls {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.gallery-counter {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  min-width: 58px;
  text-align: right;
}

.gallery-arrows {
  display: inline-flex;
  gap: 8px;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background-color: var(--surface);
  color: var(--ink);
  font-size: 1.05rem;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s var(--ease-out);
}

.icon-btn:hover {
  background-color: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
  transform: translateY(-1px);
}

.gallery-progress {
  position: relative;
  height: 1px;
  margin-top: 18px;
  margin-bottom: clamp(20px, 3vh, 30px);
  background-color: var(--line);
  overflow: hidden;
}

.gallery-progress__fill {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform-origin: left center;
  transform: scaleX(0.166);
}

.gallery-viewport {
  position: relative;
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  scrollbar-width: none;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.gallery-viewport::-webkit-scrollbar {
  display: none;
}

@media (min-width: 960px) {
  html[data-motion="on"] .gallery-viewport {
    overflow: hidden;
    scroll-snap-type: none;
    cursor: grab;
  }

  html[data-motion="on"] .gallery-viewport.is-dragging {
    cursor: grabbing;
  }
}

.gallery-track {
  display: flex;
  align-items: stretch;
  gap: clamp(18px, 2.4vw, 32px);
  width: max-content;
  padding-inline: max(var(--gutter), calc((100vw - var(--container)) / 2));
  will-change: transform;
}

.gallery-card {
  flex: 0 0 min(82vw, 380px);
  scroll-snap-align: start;
}

@media (min-width: 720px) {
  .gallery-card {
    flex: 0 0 clamp(320px, min(33vw, 54vh), 460px);
  }
}

.gallery-card__trigger {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 14px;
  text-align: left;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition:
    transform 0.35s var(--ease-out),
    border-color 0.35s ease,
    box-shadow 0.35s var(--ease-out);
  will-change: transform;
}

.gallery-card__trigger:hover {
  transform: translateY(-5px);
  border-color: var(--ink);
  box-shadow: 0 22px 46px rgba(20, 20, 19, 0.1);
}

.gallery-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--surface-2);
}

.gallery-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 0.6s var(--ease-out);
  will-change: transform;
}

.gallery-card__trigger:hover .gallery-card__media img {
  transform: scale(1.1);
}

.gallery-card__meta {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 16px 4px 6px;
}

.gallery-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.gallery-card__num {
  color: var(--accent);
  font-family: var(--font-display);
}

.gallery-card__title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
}

.gallery-card__title {
  margin: 0;
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.gallery-card__sub {
  font-size: 0.82rem;
  color: var(--ink-muted);
  white-space: nowrap;
}

.gallery-card__desc {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.gallery-card__foot {
  margin-top: auto;
  padding-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  margin-top: 16px;
  font-size: 0.8rem;
  font-weight: 700;
}

.gallery-card__platform {
  color: var(--ink-muted);
}

.gallery-card__cta {
  color: var(--accent);
  transition: transform 0.25s var(--ease-out);
}

.gallery-card__trigger:hover .gallery-card__cta {
  transform: translateX(3px);
}

/* ===========================
   Architectural GitHub Ledger Section
   =========================== */
.ledger-section {
  padding-block: clamp(56px, 8vh, 96px);
  background-color: var(--bg);
}

.ledger-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-tab {
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background-color: var(--surface);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--ink-soft);
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}

.filter-tab span {
  font-weight: 400;
  opacity: 0.78;
}

.filter-tab:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.filter-tab.is-active {
  background-color: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

.ledger-columns {
  display: grid;
  grid-template-columns: 58px minmax(190px, 1.15fr) minmax(220px, 1.45fr) minmax(180px, 1.05fr) 118px;
  gap: 18px;
  padding: 0 14px 12px;
  border-bottom: 1px solid var(--line-strong);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.ledger-list {
  display: grid;
}

.ledger-row {
  display: grid;
  grid-template-columns: 58px minmax(190px, 1.15fr) minmax(220px, 1.45fr) minmax(180px, 1.05fr) 118px;
  align-items: center;
  gap: 18px;
  padding: 20px 14px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.24s ease, padding-inline 0.24s var(--ease-out);
}

.ledger-row:hover {
  background-color: var(--surface);
  padding-inline: 20px;
}

.ledger-row__num {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.ledger-row__title-wrap {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.ledger-row__title {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.ledger-row__sub {
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.ledger-row__summary-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ledger-row__short {
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.ledger-row__platform {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.ledger-row__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background-color: var(--bg);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink-soft);
}

.ledger-row__action {
  text-align: right;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.2s ease, transform 0.24s var(--ease-out);
}

.ledger-row:hover .ledger-row__action {
  color: var(--accent);
  transform: translateX(3px);
}

.ledger-endnote {
  margin-top: 26px;
  padding: 18px 20px;
  background-color: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  font-size: 0.86rem;
  color: var(--ink-soft);
}

.ledger-endnote a {
  font-weight: 700;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* ===========================
   Dark Contrast About & Footer
   =========================== */
.about-section {
  background-color: var(--dark-bg);
  color: var(--dark-ink);
  padding-block: clamp(64px, 9vh, 108px);
}

.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(32px, 5vw, 84px);
  align-items: start;
}

.about__left {
  position: sticky;
  top: calc(var(--header-h) + 32px);
}

.about__title {
  margin: 0;
  font-size: clamp(2.1rem, 4.2vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.about__title .serif-em {
  color: var(--accent-bright);
  padding-inline: 0.08em;
}

.about__text {
  margin: 0 0 20px;
  font-size: clamp(1rem, 1.25vw, 1.12rem);
  line-height: 1.85;
  color: var(--dark-muted);
}

.about__text strong {
  color: var(--dark-ink);
}

.about__specs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 34px 0;
  padding-block: 22px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.spec-item dt {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--dark-muted);
}

.spec-item dd {
  margin: 6px 0 0;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--dark-ink);
}

.site-footer {
  background-color: var(--dark-bg);
  color: var(--dark-muted);
  border-top: 1px solid var(--line-dark);
  padding-block: 22px;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

.footer__left {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.footer__actions {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-btn {
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-dark);
  color: var(--dark-ink);
  font-size: 0.82rem;
  font-weight: 700;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.footer-btn:hover {
  border-color: var(--accent-bright);
  color: var(--accent-bright);
}

/* ===========================
   Obsidian FLIP Curtain Modal
   =========================== */
.curtain-modal[hidden] {
  display: none;
}

.curtain-modal {
  position: fixed;
  inset: 0;
  z-index: 940;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.curtain-modal__backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 20, 19, 0.94);
  backdrop-filter: blur(10px);
}

.curtain-modal__shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin: auto;
  height: 100%;
  max-height: 100vh;
  overflow-y: auto;
  padding: clamp(18px, 3vw, 38px) clamp(18px, 3.5vw, 48px) 42px;
  color: var(--dark-ink);
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vh, 32px);
}

.curtain-modal__topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 0 14px;
  background-color: rgba(20, 20, 19, 0.92);
  border-bottom: 1px solid var(--line-dark);
}

.curtain-modal__crumb {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--dark-muted);
}

.curtain-modal__nav {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-nav-btn,
.modal-close-btn {
  min-height: 40px;
  padding: 0 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-dark);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dark-ink);
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.modal-nav-btn:hover {
  border-color: var(--dark-ink);
}

.modal-close-btn {
  background-color: var(--dark-surface);
  border-color: rgba(255, 107, 53, 0.48);
  color: var(--accent-bright);
}

.modal-close-btn:hover {
  background-color: var(--accent-bright);
  color: var(--dark-bg);
}

.curtain-modal__body {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  margin-block: auto;
}

.curtain-modal__stage {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-dark);
  background-color: var(--dark-surface);
  aspect-ratio: 4 / 3;
  transform-origin: top left;
  will-change: transform;
}

.curtain-modal__stage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.curtain-modal__artnote {
  margin: 12px 0 0;
  font-size: 0.78rem;
  color: var(--dark-muted);
}

.curtain-modal__platform {
  margin: 0 0 10px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent-bright);
}

.curtain-modal__title {
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 3.1rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.curtain-modal__subtitle {
  margin: 8px 0 0;
  font-size: 1.05rem;
  color: var(--dark-muted);
}

.curtain-modal__desc {
  margin: 22px 0 0;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--dark-ink);
}

.curtain-modal__block {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.curtain-modal__block h3 {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--dark-muted);
}

.curtain-modal__features {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: var(--dark-ink);
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-tag {
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-dark);
  background-color: var(--dark-surface);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--dark-ink);
}

.curtain-modal__footer {
  margin-top: 30px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 20px;
}

.curtain-modal__repo-id {
  font-family: var(--font-display);
  font-size: 0.84rem;
  color: var(--dark-muted);
}

/* ===========================
   Responsive Breakpoints
   =========================== */
@media (max-width: 959px) {
  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero__stage {
    justify-content: flex-start;
  }

  .plinth-frame {
    max-width: 100%;
  }

  .ledger-columns {
    display: none;
  }

  .ledger-row {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 10px 14px;
    padding: 18px 8px;
  }

  .ledger-row:hover {
    padding-inline: 12px;
  }

  .ledger-row__summary-wrap,
  .ledger-row__tags,
  .ledger-row__action {
    grid-column: 2 / -1;
    text-align: left;
  }

  .about__grid {
    grid-template-columns: 1fr;
  }

  .about__left {
    position: static;
  }

  .curtain-modal__body {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 639px) {
  .brand__sub {
    display: none;
  }

  .hero__title {
    font-size: clamp(2.85rem, 13.5vw, 4.4rem);
  }

  .hero__meta,
  .about__specs {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .gallery-card {
    flex-basis: min(85vw, 330px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .preloader {
    display: none !important;
  }
}