:root {
  --ink: #171719;
  --muted: #727278;
  --line: #dedee2;
  --paper: #fbfbfa;
  --panel: #f1f1f3;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "Instrument Sans", Arial, sans-serif;
  --rail-width: clamp(260px, 23vw, 350px);
  --intro-progress: 0;
  --dock-progress: 0;
  --nav-width: 420px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }

.custom-cursor {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 16px;
  height: 16px;
  border: 1px solid rgb(255 255 255 / 92%);
  border-radius: 50%;
  background: rgb(72 72 72 / 34%);
  box-shadow: 0 3px 9px rgb(24 24 24 / 28%);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: opacity 120ms ease, background-color 160ms ease,
    box-shadow 160ms ease, transform 160ms cubic-bezier(.22, 1, .36, 1);
}

.custom-cursor.is-clicking {
  background: rgb(48 48 48 / 62%);
  box-shadow: 0 2px 7px rgb(18 18 18 / 34%);
  transform: translate(-50%, -50%) scale(.88);
}

@media (pointer: fine) {
  body, a, button, input, select, textarea { cursor: none; }
}

@media (pointer: coarse) {
  .custom-cursor { display: none; }
}

.concept-header {
  position: fixed;
  z-index: 50;
  top: 14px;
  left: 50%;
  right: auto;
  width: var(--nav-width);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 58px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  background: rgb(251 251 250 / calc(var(--dock-progress) * .72));
  box-shadow: 0 8px 30px rgb(24 24 28 / calc(var(--dock-progress) * .07));
  backdrop-filter: blur(calc(var(--dock-progress) * 20px)) saturate(1.2);
  -webkit-backdrop-filter: blur(calc(var(--dock-progress) * 20px)) saturate(1.2);
  transform: translateX(-50%);
  transition: background 360ms ease;
}

.concept-mark {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: -.03em;
  opacity: var(--dock-progress);
  filter: blur(calc((1 - var(--dock-progress)) * 8px));
  pointer-events: auto;
}

.concept-nav {
  justify-self: center;
  display: flex;
  gap: 28px;
  color: #7b7b80;
  font-family: var(--serif);
  font-size: 18px;
}

.concept-nav a { transition: color 180ms ease; }
.concept-nav a:hover, .concept-nav .is-active { color: var(--ink); }

.fallback-link {
  justify-self: end;
  color: #77777c;
  font-size: 12px;
  opacity: var(--dock-progress);
}

.concept-shell {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  gap: 18px;
  padding: 94px 28px 28px;
}

.identity-rail {
  position: sticky;
  top: 94px;
  align-self: start;
  height: calc(100vh - 122px);
  min-height: 610px;
  overflow: hidden;
  border-right: 0;
}

.portrait {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 4px;
  width: min(430px, 98%);
  height: min(690px, 76vh);
  opacity: 1;
  transform: translateX(-50%) scale(1.09);
  transform-origin: center bottom;
  transition: transform 80ms linear;
}

.portrait-canvas {
  width: 100%;
  height: 100%;
  opacity: 0;
  filter: blur(12px);
  transition: opacity 700ms ease, filter 800ms ease;
}

.portrait[data-glasses-hover="true"] .portrait-canvas { cursor: pointer; }

.portrait.is-model-ready .portrait-canvas { opacity: 1; filter: blur(0); }

.model-controls {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  width: 270px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 82%);
  border-radius: 18px;
  background: rgb(239 239 239 / 92%);
  box-shadow: 0 10px 30px rgb(35 35 35 / 14%);
  color: #292929;
  font-family: var(--sans);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.model-controls__toggle {
  display: flex;
  width: 100%;
  padding: 12px 14px;
  border: 0;
  justify-content: space-between;
  background: transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.model-controls__body {
  max-height: min(70vh, 590px);
  padding: 0 14px 14px;
  overflow: auto;
}

.model-controls.is-collapsed .model-controls__body { display: none; }

.model-controls label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 5px 10px;
  margin: 8px 0;
  font-size: 12px;
}

.model-controls output { color: #666; font-variant-numeric: tabular-nums; }
.model-controls input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: #7d9ed2; }

.model-controls fieldset {
  margin: 12px 0;
  padding: 8px 10px 6px;
  border: 1px solid rgb(50 50 50 / 12%);
  border-radius: 12px;
}

.model-controls legend { padding: 0 5px; font-size: 12px; font-weight: 600; }
.model-controls__color { align-items: center; }

.model-controls input[type="color"] {
  width: 42px;
  height: 27px;
  padding: 2px;
  border: 1px solid rgb(50 50 50 / 16%);
  border-radius: 7px;
  background: white;
}

.model-controls__reset {
  width: 100%;
  margin-top: 7px;
  padding: 8px;
  border: 1px solid rgb(50 50 50 / 15%);
  border-radius: 10px;
  background: rgb(255 255 255 / 64%);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.model-controls p { margin: 8px 0 0; color: #777; font-size: 10px; text-align: center; }

.rail-footer {
  position: absolute;
  z-index: 5;
  right: 24px;
  bottom: 10px;
  left: 12px;
  display: flex;
  justify-content: space-between;
  color: #77777d;
  font-size: 11px;
}

.project-field { min-width: 0; }

.project-field__intro {
  display: grid;
  min-height: 0;
  padding: 24px 3vw 30px 2px;
  align-content: start;
}

.project-memo {
  max-width: 1000px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 3.2vw, 48px);
  font-weight: 400;
  line-height: .92;
  letter-spacing: -.035em;
  opacity: calc(1 - (var(--intro-progress) * .88));
  filter: blur(calc(var(--intro-progress) * 10px));
  transform: translateY(calc(var(--intro-progress) * -44px));
  transition: opacity 60ms linear, filter 60ms linear;
}

.project-memo em {
  background: linear-gradient(90deg, #7197d4, #e7bc8b);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  font-weight: 400;
}

.project-memo__name {
  display: inline-block;
  opacity: calc(1 - var(--dock-progress));
  filter: blur(calc(var(--dock-progress) * 9px));
  will-change: opacity, filter;
}

.project-memo u {
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px 18px;
}

.concept-card {
  display: grid;
  align-content: start;
  min-width: 0;
  opacity: 0;
  filter: blur(9px);
  transform: translateY(22px);
  transition:
    opacity 900ms cubic-bezier(.22, 1, .36, 1),
    filter 900ms cubic-bezier(.22, 1, .36, 1),
    transform 900ms cubic-bezier(.22, 1, .36, 1);
  will-change: filter, opacity, transform;
}

.concept-card.is-visible { opacity: 1; filter: blur(0); transform: translateY(0); }

.concept-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 0;
  border-radius: 14px;
  background: var(--panel);
}

.concept-card__media img,
.concept-card__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(.22, 1, .36, 1), opacity 350ms ease;
}

.concept-card__media--unwritten img { object-fit: cover; }
.concept-card__media video { position: absolute; inset: 0; opacity: 0; }

.concept-card:hover .concept-card__media {
  transform: none;
  box-shadow: none;
}

.concept-card:hover .concept-card__media img { transform: scale(1.025); }
.concept-card:hover .concept-card__media--video video,
.concept-card:hover .concept-card__media--unwritten video { opacity: 1; }
.concept-card:hover .concept-card__media--video img,
.concept-card:hover .concept-card__media--unwritten img { opacity: 0; }

.concept-card__copy { display: grid; gap: 6px; padding: 12px 2px 0; }

.concept-card__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.1;
}

.concept-card__heading > span { color: #8a8a90; font-weight: 400; }

.concept-card__description {
  min-height: 1.2em;
  color: rgb(45 45 45 / 58%);
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.2;
}

.concept-card__tags { display: none; }
.concept-card__tags i { color: #85858a; font-size: 10px; font-style: normal; text-transform: uppercase; letter-spacing: .04em; }

.concept-card__tags .tag {
  padding: 5px 8px;
  border-radius: 999px;
  color: #343439;
  letter-spacing: 0;
  text-transform: none;
}

.tag--life { background: #dce8dc; }
.tag--play { background: #f7d7c5; }
.tag--curiosity { background: #dbe5f5; }

.concept-card--cavlry { cursor: none; }

.concept-cursor-note {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  padding: 8px 12px;
  border: 1px solid rgb(80 80 84 / 16%);
  border-radius: 999px;
  background: rgb(250 250 250 / 88%);
  box-shadow: 0 8px 24px rgb(20 20 24 / 10%);
  color: #4f4f54;
  font-family: var(--sans);
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(5px) scale(.96);
  transition: opacity 180ms ease, transform 220ms cubic-bezier(.22, 1, .36, 1);
  backdrop-filter: blur(12px);
}

.concept-cursor-note.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.concept-end {
  display: flex;
  margin: 110px 0 18px;
  padding: 28px 2px 10px;
  border-top: 1px solid var(--line);
  align-items: end;
  justify-content: space-between;
  gap: 30px;
}

.concept-end p {
  max-width: 520px;
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1;
}

.concept-end a { font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 980px) {
  :root { --rail-width: 250px; }
  .concept-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .concept-header { top: 10px; left: 10px; right: 10px; width: auto; transform: none; grid-template-columns: 1fr auto; height: 54px; padding: 0 16px; }
  .concept-mark { opacity: 1; filter: none; transform: none; pointer-events: auto; }
  .concept-nav { justify-self: end; gap: 16px; font-size: 16px; }
  .fallback-link { display: none; }
  .concept-shell { display: block; padding: 78px 18px 24px; }
  .identity-rail { position: relative; top: auto; height: 720px; min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .portrait { bottom: 8px; width: 310px; height: 500px; transform: translateX(-50%); }
  .rail-footer { display: none; }
  .project-field__intro { min-height: 480px; padding: 50px 0; }
  .project-memo { font-size: 50px; opacity: 1; filter: none; transform: none; }
  .project-memo__name { opacity: 1; filter: none; }
  .concept-grid { gap: 46px; }
  .concept-card__media { border-radius: 16px; aspect-ratio: 4 / 3; }
  .concept-end { display: grid; margin-top: 80px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}