/* Brand Elements — Figma 710:1189 */
body[data-chapter="elements"] { --dock-y: 168; --dock-x: 160; }

/* hero: navy field, white title (Figma) */
.fh.th-navy { color: #fff; }
.el-hero .fh__s img { filter: blur(var(--strip-blur, 8px)) saturate(1.25) brightness(1.05); }

/* ---------- 02 intro ---------- */
.el-intro__grid { display: grid; gap: var(--s-6); justify-items: start; }
.el-intro__shapes .shapes { font-size: clamp(20px, calc(31 * var(--fx)), 31px); }
.el-intro__lead { max-width: 1060px; font-size: clamp(18px, calc(32 * var(--fx)), 32px); line-height: 1.45; margin-top: var(--s-5); }

/* ---------- 03 materials: 3D stage ---------- */
@property --tint { syntax: '<color>'; inherits: true; initial-value: #C1CFF3; }
.el-mat { padding-top: 0; }
.es { display: grid; gap: var(--s-4); }
.es__view {
  position: relative; height: min(62svh, 760px); min-height: 400px; border-radius: var(--r-panel); overflow: hidden; isolation: isolate;
  background: radial-gradient(120% 90% at 50% 38%, #fff 0%, #F3F6FD 52%, #E4EAF8 100%);
  perspective: 1400px; touch-action: pan-y; transition: --tint .9s var(--ease);
}
.es__glow { position: absolute; left: 50%; top: 46%; width: 64%; aspect-ratio: 1; translate: -50% -50%; border-radius: 50%; background: radial-gradient(closest-side, var(--tint), transparent 72%); opacity: .55; filter: blur(30px); z-index: -1; pointer-events: none; }
.es__floor { position: absolute; left: 50%; bottom: 7%; width: 34%; height: 7%; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(14,19,60,.32), transparent); filter: blur(8px); pointer-events: none; }
.es__rig { position: absolute; inset: 0; transform-style: preserve-3d; will-change: transform; }
.es__obj { position: absolute; inset: 0; margin: 0; pointer-events: none;
  opacity: 0; transform: translateX(calc(var(--dir, 1) * 9%)) scale(.84) rotateY(calc(var(--dir, 1) * -34deg)); filter: blur(12px);
  transition: opacity .7s var(--ease), transform 1.2s var(--ease), filter .9s var(--ease);
}
.es__obj.is-on { opacity: 1; transform: none; filter: none; }
.es__obj.is-out { transform: translateX(calc(var(--dir, 1) * -9%)) scale(.9) rotateY(calc(var(--dir, 1) * 30deg)); }
.es__obj img, .es__sheen {
  position: absolute; left: 50%; top: 48%; width: min(78%, 64svh, 640px); aspect-ratio: 1; translate: -50% -50%;
}
.es__obj img { object-fit: contain; filter: drop-shadow(0 40px 40px rgba(14,19,60,.18)); user-select: none; -webkit-user-drag: none; }
.es__sheen {
  -webkit-mask-size: contain; mask-size: contain; -webkit-mask-position: center; mask-position: center; -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
  background: radial-gradient(circle at var(--sx, 32%) var(--sy, 26%), rgba(255,255,255,.75), rgba(255,255,255,0) 38%);
  mix-blend-mode: soft-light; opacity: .9; pointer-events: none;
}
.es__meta { position: absolute; left: var(--s-5); bottom: var(--s-4); display: grid; gap: .3em; color: var(--m-navy); }
.es__count { font: 600 var(--t-micro)/1 var(--font-display); letter-spacing: .16em; color: var(--fg-soft); }
.es__name { font: 600 var(--t-h4)/1.1 var(--font-display); letter-spacing: -.01em; }
.es__nav { position: absolute; right: var(--s-5); bottom: var(--s-4); display: flex; gap: 10px; }
.es__arrow { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.7); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); box-shadow: inset 0 0 0 1.5px var(--line); transition: box-shadow .25s, transform .4s var(--ease); }
.es__arrow svg { width: 20px; height: 20px; }
.es__arrow:hover { box-shadow: inset 0 0 0 1.5px var(--m-navy); }
#es-prev:hover { transform: translateX(-3px); } #es-next:hover { transform: translateX(3px); }

.es__picker { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-3); }
.es__pick {
  display: grid; justify-items: center; gap: 10px; padding: var(--s-3) var(--s-2) var(--s-2); border-radius: var(--r-card);
  box-shadow: inset 0 0 0 1.5px transparent; transition: box-shadow .3s, background .3s;
}
.es__pick img { width: min(100%, 150px); aspect-ratio: 1; object-fit: contain; transition: transform .7s var(--ease); }
.es__pick span { font: 500 var(--t-small)/1.2 var(--font-display); color: var(--fg-soft); }
.es__pick:hover { box-shadow: inset 0 0 0 1.5px var(--line); }
.es__pick:hover img { transform: translateY(-6px) rotate(-4deg); }
.es__pick[aria-selected="true"] { box-shadow: inset 0 0 0 2px var(--m-navy); }
.es__pick[aria-selected="true"] span { color: var(--m-navy); font-weight: 600; }

/* ---------- 04 gallery: bento (Figma proportions) ---------- */
.el-gal { padding-top: var(--s-6); }
.el-gal__bar { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); flex-wrap: wrap; margin-bottom: var(--s-4); }
.el-gal__bar .seg button[aria-checked="true"] { background: var(--fg); color: var(--bg); }
.eg { display: grid; }
.eg__top { display: grid; grid-template-columns: 1520fr 1940fr; aspect-ratio: 3460 / 1076; }
.eg__glass { display: grid; grid-template-rows: 244fr 832fr; min-height: 0; }
.eg__strip { display: grid; grid-template-columns: 196fr 244fr 246fr 314fr 246fr 274fr; min-height: 0; background: #000; }
.eg__quad { display: grid; grid-template-columns: 758fr 760fr; grid-template-rows: 1fr 1fr; min-height: 0; }
.eg__puffy { display: grid; grid-template-columns: 966fr 970fr; grid-template-rows: 534fr 542fr; min-height: 0; }
.eg__bot { display: grid; grid-template-columns: 1748fr 716fr 992fr; aspect-ratio: 3456 / 976; }
.eg__t { position: relative; display: block; width: 100%; height: 100%; min-height: 0; overflow: hidden; background: #07081A; }
.eg__t img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease), opacity .6s var(--ease), filter .6s var(--ease); }
.eg__t:hover img { transform: scale(1.06); }
.eg__t:focus-visible { outline-offset: -4px; outline-color: #fff; z-index: 1; }
.eg__t.is-dim { pointer-events: none; }
.eg__t.is-dim img { opacity: .14; filter: grayscale(1); transform: scale(.98); }

@media (max-width: 900px) {
  .es__view { height: 62svh; min-height: 360px; }
  .es__meta { left: var(--s-3); }
  .es__nav { right: var(--s-3); }
  .es__arrow { width: 44px; height: 44px; }
  .es__picker { gap: 6px; }
  .es__pick { padding: 8px 4px; }
  .es__pick span { font-size: 12px; }
  .eg__top { grid-template-columns: 1fr; aspect-ratio: auto; }
  .eg__glass { aspect-ratio: 1520 / 1076; }
  .eg__puffy { aspect-ratio: 1940 / 1076; }
  .eg__bot { grid-template-columns: 716fr 992fr; aspect-ratio: auto; }
  .eg__bot .eg__t:first-child { grid-column: 1 / -1; aspect-ratio: 1748 / 976; }
  .eg__bot .eg__t:nth-child(2) { aspect-ratio: 716 / 976; }
  .eg__bot .eg__t:nth-child(3) { aspect-ratio: 992 / 976; }
}
.eg > *, .eg__top > *, .eg__glass > *, .eg__strip > *, .eg__quad > *, .eg__puffy > *, .eg__bot > * { min-width: 0; }