/* ═══════════ HELMHOLTZ — soft investment teaser ═══════════
   Blackshore brand: paper white + petrol #003C37, TSTAR MINIGRAM.
   Concept world lives in b/w-grey; petrol is the only voice of colour —
   copper & silver are reserved for the architect's volumes. */

@font-face {
  font-family: "TSTAR";
  src: url("fonts/TSTARMINIGRAM-Regular.otf") format("opentype");
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "TSTAR";
  src: url("fonts/TSTARMINIGRAM-Black.otf") format("opentype");
  font-weight: 900; font-display: swap;
}

:root {
  --petrol: #003C37;
  --petrol-soft: #0d5049;
  --mint: #7fe0d0;
  --copper: #b87343;
  --ink: #121715;
  --grey: #5f6663;
  --line: #d8dcd9;
  --paper: #ffffff;
  --paper-warm: #f4f4f1;
  --pad: clamp(1.4rem, 5vw, 6rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "TSTAR", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
h1, h2, h3 { font-weight: 900; line-height: 1.04; letter-spacing: -0.01em; }
h2 { font-size: clamp(2rem, 4.6vw, 4.2rem); margin: 0.9rem 0 1.4rem; }
p { max-width: 34em; }
button { font-family: inherit; }

/* reveal choreography */
[data-r] { opacity: 0; transform: translateY(26px); transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); }
.in [data-r] { opacity: 1; transform: none; }
.in [data-r]:nth-child(2) { transition-delay: 0.1s; }
.in [data-r]:nth-child(3) { transition-delay: 0.2s; }
.in [data-r]:nth-child(4) { transition-delay: 0.3s; }
.in [data-r]:nth-child(5) { transition-delay: 0.4s; }
.in [data-r]:nth-child(6) { transition-delay: 0.5s; }
@media (prefers-reduced-motion: reduce) { [data-r] { transition: none; opacity: 1; transform: none; } }

/* ── chrome ── */
.chrome {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 1.1rem var(--pad);
  mix-blend-mode: difference; color: #fff;
  pointer-events: none;
}
.wordmark { font-weight: 900; letter-spacing: 0.32em; font-size: 0.92rem; }
.conf { font-size: 0.78rem; font-weight: 900; letter-spacing: 0.26em; text-transform: uppercase; opacity: 1; }

.dots {
  position: fixed; right: 1.1rem; top: 50%; transform: translateY(-50%); z-index: 40;
  display: flex; flex-direction: column; gap: 0.75rem;
}
.dots a {
  width: 7px; height: 7px; border-radius: 50%;
  background: transparent; border: 1.5px solid var(--grey);
  display: block; position: relative; transition: all 0.3s;
}
.dots a.active { background: var(--petrol); border-color: var(--petrol); transform: scale(1.35); }
.dots a span {
  position: absolute; right: 1.2rem; top: 50%; transform: translateY(-50%);
  font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; white-space: nowrap;
  color: var(--petrol); opacity: 0; transition: opacity 0.25s; pointer-events: none;
  background: rgba(255,255,255,0.85); padding: 0.15rem 0.5rem;
}
.dots a:hover span { opacity: 1; }

/* cover invitation label */
.inv-label { margin-bottom: 0.4rem; }
.inv-label p {
  font-size: clamp(0.78rem, 1.2vw, 0.95rem); font-weight: 900;
  letter-spacing: 0.3em; text-transform: uppercase; color: #fff;
  text-shadow: 0 1px 14px rgba(0, 18, 16, 0.55);
}
.inv-label .inv-sender { margin-top: 0.85rem; opacity: 0.92; }

/* microlabels */
.microlabel {
  font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--petrol); font-weight: 400;
}
.microlabel.light { color: #fff; font-weight: 900; text-shadow: 0 1px 12px rgba(0,18,16,0.5); }

/* ── chapters ── */
.chapter { min-height: 100vh; position: relative; padding: clamp(5rem, 12vh, 9rem) var(--pad); }

/* A · cover */
.cover {
  display: flex; align-items: flex-end;
  min-height: 100svh; color: #fff; overflow: hidden;
}
.cover-img { position: absolute; inset: 0; z-index: 0; }
.cover-img svg {
  width: 100%; height: 100%; display: block;
  filter: grayscale(1) contrast(1.05) brightness(0.72);
  transform: scale(1.06);
  transition: transform 7.5s cubic-bezier(0.22, 0.6, 0.2, 1);
}
.cover.in .cover-img svg { transform: scale(1); }
.cover-img::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(15deg, rgba(0,25,22,0.85) 0%, rgba(0,25,22,0.12) 55%, rgba(0,25,22,0.3) 100%);
}
/* site highlight: dim outside, draw the boundary, let it breathe */
.site-dim { fill: rgba(2,14,12,0.52); opacity: 0; transition: opacity 2.2s ease 2.6s; }
.site-line {
  fill: none; stroke-linejoin: round; stroke-linecap: round;
  stroke-dasharray: 3441; stroke-dashoffset: 3441;
}
.site-line.core { stroke: #ffffff; stroke-width: 7; }
.site-line.glow { stroke: var(--mint); stroke-width: 22; opacity: 0.45; filter: blur(10px); }
.cover.in .site-dim { opacity: 1; }
.cover.in .site-line.core { animation: draw 4.6s cubic-bezier(0.6, 0.02, 0.25, 1) 1.35s forwards; }
.cover.in .site-line.glow { animation: draw 4.6s cubic-bezier(0.6, 0.02, 0.25, 1) 1.0s forwards, breathe 4.5s ease-in-out 6.4s infinite; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes breathe { 0%, 100% { opacity: 0.45; } 50% { opacity: 0.12; } }
.site-label {
  position: absolute; right: clamp(1rem, 4vw, 3rem); top: clamp(4.4rem, 10vh, 7rem); z-index: 2;
  font-size: 0.72rem; font-weight: 900; letter-spacing: 0.2em; text-transform: uppercase;
  color: #fff; background: rgba(2,20,18,0.78); backdrop-filter: blur(5px);
  padding: 0.55rem 0.8rem; border-left: 3px solid var(--mint);
  opacity: 0; transition: opacity 1s ease 6s;
}
.cover.in .site-label { opacity: 1; }
.site-label span { display: block; font-weight: 400; letter-spacing: 0.14em; margin-top: 0.3rem; opacity: 0.85; }
.site-label .sl-1 { font-weight: 900; letter-spacing: 0.2em; margin-top: 0; opacity: 1; font-size: 0.8rem; }
.cover-inner { position: relative; z-index: 1; padding-bottom: clamp(2rem, 8vh, 5rem); }
.display {
  font-size: clamp(4.2rem, 15vw, 13rem);
  letter-spacing: 0.02em; line-height: 0.92; margin: 1.2rem 0 1.6rem;
}
.tagline { font-size: clamp(1.05rem, 2vw, 1.5rem); font-weight: 400; opacity: 0.95; }
.tagline strong { font-weight: 900; }
.tagline2 { font-size: clamp(0.9rem, 1.5vw, 1.15rem); opacity: 0.72; margin-top: 0.5rem; }
.scrollcue {
  position: absolute; left: 50%; bottom: 1.4rem; transform: translateX(-50%); z-index: 2;
  width: 1px; height: 56px; overflow: hidden;
}
.scrollcue span {
  display: block; width: 1px; height: 100%; background: rgba(255,255,255,0.7);
  animation: cue 2.4s ease-in-out infinite;
}
@keyframes cue { 0% { transform: translateY(-100%); } 60% { transform: translateY(0); } 100% { transform: translateY(100%); } }

/* B · cluster — full-bleed live map + rail + detail view */
.place { padding: 0; min-height: 100vh; overflow: hidden; }
.geo-map { position: absolute; inset: 0; }
.geo-map .maplibregl-ctrl-bottom-right { opacity: 0.35; }
.map-grad {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background: linear-gradient(180deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0) 40%),
              linear-gradient(0deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0) 42%);
}
.place-card {
  position: relative; z-index: 2;
  max-width: min(520px, 88vw);
  margin: clamp(4.8rem, 10vh, 7rem) 0 0 var(--pad);
  background: rgba(255,255,255,0.96); backdrop-filter: blur(8px);
  border-top: 3px solid var(--petrol);
  box-shadow: 0 14px 44px rgba(0,20,18,0.14);
  padding: clamp(1.3rem, 2.4vw, 2.1rem);
}
.place-card h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); margin: 0.7rem 0 0.8rem; }
.place-card p { margin-bottom: 0.9rem; font-size: 0.95rem; }
.place-card em { color: var(--petrol); font-style: normal; font-weight: 900; }
.place-sub { color: var(--grey); font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0 !important; }
.poi-rail {
  position: absolute; z-index: 3; left: 0; right: 0; bottom: 0;
  display: flex; gap: 0.7rem; padding: 1rem var(--pad) 1.6rem;
  overflow-x: auto; scrollbar-width: none;
}
.poi-rail::-webkit-scrollbar { display: none; }
.pr-item {
  flex: 0 0 auto; width: min(240px, 66vw);
  background: rgba(255,255,255,0.94); backdrop-filter: blur(6px);
  border: 1px solid var(--line); border-top: 3px solid var(--line);
  padding: 0.85rem 1rem; text-align: left; cursor: pointer;
  transition: border-color 0.25s, transform 0.25s;
}
.pr-item:hover, .pr-item.active { border-top-color: var(--petrol); transform: translateY(-3px); }
.pr-item.pr-home { background: var(--petrol); color: #fff; border-color: var(--petrol); }
.pr-num {
  font-style: normal; font-size: 0.62rem; letter-spacing: 0.24em;
  color: var(--petrol); display: block; margin-bottom: 0.3rem;
}
.pr-home .pr-num { color: var(--mint); }
.pr-item strong { display: block; font-size: 0.88rem; line-height: 1.25; }
.pr-sub { display: block; font-size: 0.7rem; color: var(--grey); margin-top: 0.25rem; }
.pr-home .pr-sub { color: rgba(255,255,255,0.65); }

.poi-view {
  opacity: 0; transform: translateY(-54%) translateY(14px);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1);
  position: absolute; z-index: 4;
  right: clamp(1rem, 4vw, 3rem); top: 50%;
  width: min(430px, calc(100vw - 2rem));
  background: #fff; border-top: 3px solid var(--petrol);
  box-shadow: 0 18px 60px rgba(0,20,18,0.22);
  padding: 1.6rem 1.7rem 1.5rem;
}
.poi-view.open { opacity: 1; transform: translateY(-54%); }
.pv-close {
  position: absolute; top: 0.7rem; right: 0.7rem;
  background: none; border: 0; font-size: 0.9rem; cursor: pointer; color: var(--grey);
}
.pv-num { font-size: 0.62rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--petrol); }
.pv-name { font-size: 1.35rem; margin: 0.35rem 0 0.15rem; }
.pv-addr { font-size: 0.74rem; color: var(--grey); letter-spacing: 0.06em; margin-bottom: 0.8rem; }
.pv-read { font-size: 0.88rem; margin-bottom: 1rem; }
.pv-facts { display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 1rem; font-size: 0.78rem; border-top: 1px solid var(--line); padding-top: 0.9rem; }
.pv-facts dt { color: var(--petrol); letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.62rem; padding-top: 0.15rem; white-space: nowrap; }
.pv-facts dd { color: var(--ink); }
.pv-linkrow { margin-top: 1rem; }
.pv-link {
  display: inline-block; font-size: 0.72rem; font-weight: 900; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--petrol); text-decoration: none;
  border-bottom: 2px solid var(--petrol); padding-bottom: 0.15rem;
}

/* map pins */
.geo-pin { position: relative; width: 18px; height: 18px; }
.geo-pin .gp-core { position: absolute; inset: 3px; border-radius: 50%; background: #fff; border: 4px solid var(--petrol); display: block; }
.geo-pin .gp-pulse { position: absolute; inset: -14px; border-radius: 50%; display: block; border: 1.5px solid var(--petrol); animation: pulse 2.6s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(0.35); opacity: 0.9; } 100% { transform: scale(1.25); opacity: 0; } }
.geo-pin span {
  position: absolute; left: 24px; top: -2px; white-space: nowrap;
  font: 900 0.7rem/1 "TSTAR", sans-serif; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--petrol); background: rgba(255,255,255,0.9); padding: 0.28rem 0.5rem;
}
.poi-num-pin {
  width: 27px; height: 27px; border-radius: 50%;
  background: var(--petrol); color: #fff; cursor: pointer;
  font: 900 0.62rem/27px "TSTAR", sans-serif; text-align: center; letter-spacing: 0.04em;
  border: 2px solid #fff; box-shadow: 0 2px 10px rgba(0,20,18,0.3);
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), background 0.35s, opacity 0.4s ease;
}
.poi-num-pin:hover { transform: scale(1.2); }
.poi-num-pin.is-active {
  transform: scale(1.4); background: var(--mint); color: #06302b;
  box-shadow: 0 0 0 3px #fff, 0 6px 22px rgba(0,20,18,0.35);
}
/* focus mode — everything except the active pin & the card steps back
   (same grammar as savigny-hoefe-deck s-market view-open) */
.geo-pin, .place-card, .poi-rail { transition: opacity 0.45s ease; }
.place.view-open .poi-num-pin:not(.is-active) { opacity: 0; pointer-events: none; }
.place.view-open .geo-pin { opacity: 0.25; }
.place.view-open .place-card { opacity: 0; pointer-events: none; }
.place.view-open .poi-rail { opacity: 0; pointer-events: none; }
.place.view-open .map-grad { opacity: 0.35; }
.map-grad { transition: opacity 0.6s ease; }

/* C · hall — copy left, compare right */
.hall {
  display: grid; grid-template-columns: minmax(300px, 5fr) 7fr;
  gap: clamp(1.5rem, 4vw, 4rem); align-items: center;
  background: var(--paper-warm);
}
.hall-copy p { margin-bottom: 1rem; }
.hall .hint { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--petrol); margin-top: 1.6rem; }
.compare {
  position: relative; aspect-ratio: 1 / 0.96; overflow: hidden;
  cursor: ew-resize; user-select: none; touch-action: none;
  background: #dcdcd8;
}
.compare figure { position: absolute; inset: 0; }
.compare img { width: 100%; height: 100%; object-fit: cover; }
.cmp-over img { filter: grayscale(1) contrast(1.04); }
.cmp-over { clip-path: inset(0 calc(100% - var(--cmp, 55%)) 0 0); }
.cmp-handle { position: absolute; top: 0; bottom: 0; left: var(--cmp, 55%); width: 2px; background: var(--petrol); transform: translateX(-1px); }
.cmp-handle span { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 42px; height: 42px; border-radius: 50%; background: var(--petrol); }
.cmp-handle span::before, .cmp-handle span::after { content: ""; position: absolute; top: 50%; width: 0; height: 0; border: 5px solid transparent; }
.cmp-handle span::before { left: 8px; transform: translateY(-50%); border-right-color: #fff; }
.cmp-handle span::after { right: 8px; transform: translateY(-50%); border-left-color: #fff; }
.cmp-tag { position: absolute; bottom: 0.9rem; font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; background: rgba(255,255,255,0.88); color: var(--ink); padding: 0.3rem 0.6rem; }
.tag-today { left: 0.9rem; }
.tag-concept { right: 0.9rem; }

/* B · potential — massing study + big quiet numbers */
.potential {
  display: grid; grid-template-columns: minmax(320px, 5fr) 7fr;
  gap: clamp(1.5rem, 4vw, 4rem); align-items: center;
  background: var(--paper-warm);
}
.pot-copy p { margin-bottom: 1rem; }
.pot-stats { margin-top: clamp(1.2rem, 3vh, 2rem); }
.pot-stats > div { border-top: 1px solid var(--line); padding: 0.9rem 0 1rem; }
.pot-stats dt { font-size: 0.64rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--petrol); margin-bottom: 0.35rem; }
.pot-stats dd { font-weight: 900; font-size: clamp(1.5rem, 2.8vw, 2.4rem); line-height: 1.05; }
.pot-stats span { display: block; font-size: 0.78rem; color: var(--grey); margin-top: 0.35rem; max-width: 30em; }
.pot-note { font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey); margin-top: 1rem; }
.pot-img { position: relative; }
.pot-img img { width: 100%; height: auto; }
.spin { position: relative; aspect-ratio: 16 / 9; overflow: hidden; cursor: grab; touch-action: pan-y; background: #e8e8e4; }
.spin:active { cursor: grabbing; }
.spin img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.22s ease; user-select: none; -webkit-user-drag: none; }
.spin img.on { opacity: 1; }
.spin-hint {
  position: absolute; left: 50%; bottom: 0.8rem; transform: translateX(-50%); z-index: 2;
  font-size: 0.6rem; font-weight: 900; letter-spacing: 0.22em; text-transform: uppercase;
  color: #fff; background: rgba(2,20,18,0.6); backdrop-filter: blur(4px);
  padding: 0.35rem 0.7rem; pointer-events: none; transition: opacity 0.5s;
}
.spin.touched .spin-hint { opacity: 0; }
.pot-img figcaption { margin-top: 0.6rem; font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--grey); }

/* D · vision — petrol statement + tiles */
.vision { background: var(--petrol); color: #fff; display: flex; flex-direction: column; justify-content: center; gap: 1.8rem; }
.statement { font-size: clamp(1.9rem, 4.6vw, 4.2rem); max-width: 16em; }
.statement .soft { color: rgba(255,255,255,0.55); }
.v-tiles { display: flex; gap: 0.6rem; height: clamp(240px, 34vh, 360px); }
.v-tile { position: relative; flex: 1; overflow: hidden; cursor: pointer; transition: flex 0.7s cubic-bezier(0.3, 0.8, 0.3, 1); }
.v-tile:hover { flex: 2.4; }
.v-tile img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) brightness(0.82); transition: filter 0.7s; }
.v-tile img.vt-contain { object-fit: cover; object-position: center 30%; background: #f0f0ec; filter: grayscale(1) brightness(0.98) contrast(1.02); }
.v-tile.v-lab img { filter: grayscale(0.75) brightness(0.85); }
.v-tile.v-lab:hover img { filter: grayscale(0.1) brightness(0.95); }
.v-tile:hover img { filter: grayscale(0.15) brightness(0.92); }
.v-tile figcaption {
  position: absolute; inset: auto 0 0 0; padding: 1.6rem 1.1rem 1rem;
  background: linear-gradient(0deg, rgba(0,18,16,0.94) 0%, rgba(0,18,16,0.62) 55%, rgba(0,18,16,0) 100%);
}
.vt-k {
  display: block; font-size: 0.7rem; font-weight: 900; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--mint); margin-bottom: 0.35rem;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}
.vt-t {
  display: block; font-size: 0.85rem; line-height: 1.45; max-width: 32em; color: #fff;
  text-shadow: 0 1px 8px rgba(0,0,0,0.55);
  opacity: 0.92; transition: opacity 0.4s;
}
.v-tile:hover .vt-t { opacity: 1; }
.vision-why { font-weight: 900; font-size: clamp(1.15rem, 2.2vw, 1.7rem); border-left: 3px solid rgba(255,255,255,0.5); padding-left: 1.2rem; }

/* E · layers — sticky splat stage + text stepper */
.layers { padding: 0; height: 340vh; background: var(--paper); }
.layers-sticky {
  position: sticky; top: 0; height: 100vh; overflow: hidden;
  display: flex; flex-direction: column;
  padding: clamp(4.4rem, 9vh, 6.5rem) var(--pad) clamp(1.4rem, 4vh, 3rem);
}
.layers-head h2 { font-size: clamp(1.8rem, 3.6vw, 3.2rem); margin: 0.6rem 0 0; }
.layers-stage {
  flex: 1; min-height: 0; margin-top: clamp(1rem, 3vh, 2.2rem);
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(1.2rem, 3vw, 3rem);
}
.splat-wrap { position: relative; background: #10201c; min-height: 0; overflow: hidden; }
.lframe {
  position: absolute; margin: 0; opacity: 0;
  transition: opacity 0.9s ease;
  pointer-events: none;
}
.lframe.on { opacity: 1; }
.lring { fill: none; stroke: rgba(2, 32, 29, 0.75); stroke-width: 2px; }
.lframe.on .lring { animation: lring-draw 1.7s ease 0.55s forwards; }
@keyframes lring-draw { to { stroke-dashoffset: 0; } }
.lframe img {
  position: absolute; inset: 0; width: 100%; height: 100%; display: block;
  opacity: 0; transition: opacity 0.7s ease;
}
.lframe.ready img { opacity: 1; }
.llines { position: absolute; inset: 0; width: 100%; height: 100%; }
.llines line { stroke: rgba(2, 32, 29, 0.6); stroke-width: 1.5px; }
.ldot {
  position: absolute; width: 11px; height: 11px; border-radius: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent, var(--copper)); border: 2px solid #fff;
  box-shadow: 0 0 0 4px rgba(2, 32, 29, 0.18);
}
.lframe.on .ldot { animation: lpulse 2.6s ease-in-out infinite; }
@keyframes lpulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(2, 32, 29, 0.18); }
  50%      { box-shadow: 0 0 0 9px rgba(2, 32, 29, 0.05); }
}
.lchip {
  position: absolute; transform: translate(-50%, -50%) translateY(10px);
  background: rgba(2, 32, 29, 0.78);
  -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px);
  border-left: 2px solid var(--accent, var(--mint));
  color: #fff; font-size: 0.6rem; font-weight: 900;
  letter-spacing: 0.16em; text-transform: uppercase; line-height: 1.45;
  padding: 0.5rem 0.75rem; white-space: nowrap;
  opacity: 0; transition: opacity 0.5s ease, transform 0.5s ease;
}
.lchip.wide {
  white-space: normal; max-width: 21em;
  font-weight: 400; text-transform: none; letter-spacing: 0.05em;
  font-size: 0.72rem; line-height: 1.55;
}
.lframe.on .lchip {
  opacity: 1; transform: translate(-50%, -50%);
  transition-delay: var(--d, 0.4s), var(--d, 0.4s);
}
.lpanel { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.lstep {
  position: absolute; inset: 0 0 auto 0; top: 50%; transform: translateY(-58%) translateY(18px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.lstep.active { opacity: 1; transform: translateY(-58%); pointer-events: auto; }
.lstep .lnum { font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--petrol); margin-bottom: 0.5rem; }
.lstep h3 { font-size: clamp(1.5rem, 2.6vw, 2.3rem); margin-bottom: 0.7rem; }
.lstep .ltags { margin-top: 0.9rem; font-size: 0.8rem; color: var(--grey); letter-spacing: 0.04em; }
.lprogress { position: absolute; bottom: 3.4rem; left: 0; display: flex; gap: 1.4rem; }
.lprogress button {
  display: flex; align-items: center; gap: 0.45rem;
  background: none; border: 0; cursor: pointer;
  font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--grey);
  transition: color 0.3s;
}
.lprogress button i { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--grey); transition: all 0.3s; }
.lprogress button.active { color: var(--petrol); font-weight: 900; }
.lprogress button.active i { background: var(--petrol); border-color: var(--petrol); }
.layers-coda { position: absolute; bottom: 0; left: 0; font-weight: 900; font-size: 0.92rem; line-height: 1.3; color: var(--petrol); }

/* F · voices */
.voices { background: var(--paper-warm); }
.voices-sub { color: var(--grey); margin-bottom: 2.4rem; }
.voice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.8rem); }
.voice {
  background: var(--paper); padding: clamp(1.4rem, 2.4vw, 2.2rem);
  border-top: 3px solid var(--line); transition: border-color 0.3s, transform 0.3s;
  display: flex; flex-direction: column;
}
.voice:hover { border-top-color: var(--petrol); transform: translateY(-4px); }
.voice.featured { grid-column: 1 / -1; background: var(--petrol); color: #fff; border-top-color: var(--petrol); }
.voice.featured .v-quote { font-size: clamp(1.25rem, 2.6vw, 2rem); font-weight: 900; line-height: 1.3; max-width: 26em; }
.v-quote { flex: 1; margin-bottom: 1.4rem; }
.v-name { font-weight: 900; letter-spacing: 0.08em; }
.v-role { font-size: 0.78rem; color: var(--grey); }
.voice.featured .v-role { color: rgba(255,255,255,0.65); }

/* G · professor */
.professor { background: var(--ink); color: #fff; display: flex; flex-direction: column; justify-content: center; gap: 2rem; }
.professor blockquote { position: relative; max-width: 46rem; }
.professor blockquote::before {
  content: "\201C"; position: absolute; left: -0.6rem; top: -3.2rem;
  font: 900 9rem/1 "TSTAR", sans-serif; color: var(--petrol-soft);
}
.p-quote { font-size: clamp(1.5rem, 3.4vw, 2.9rem); font-weight: 900; line-height: 1.22; max-width: 22em; }
.p-name { margin-top: 1.6rem; letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.78rem; }
.p-context { opacity: 0.7; max-width: 38em; }

/* H · invite */
.invite { text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.1rem; overflow: hidden; }
.invite > * { position: relative; z-index: 1; }
.invite-bg { position: absolute; inset: 0; z-index: 0 !important; }
.invite-bg img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) brightness(1.12) contrast(0.92); opacity: 0.16; }
.arabic { font-size: clamp(1.6rem, 3.4vw, 2.6rem); color: var(--petrol); font-family: "Geeza Pro", "Amiri", serif; }
.invite-sub { margin: 0 auto; color: var(--grey); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 3vw, 2.5rem); margin: 2.6rem 0; text-align: left; max-width: 900px; position: relative; }
.steps::before { content: ""; position: absolute; top: 1.05rem; left: 8%; right: 8%; height: 1px; background: var(--line); }
.steps li { position: relative; padding-top: 2.6rem; }
.steps .s-num { position: absolute; top: 0; left: 0; width: 2.1rem; height: 2.1rem; border-radius: 50%; background: var(--petrol); color: #fff; font-weight: 900; font-size: 0.75rem; display: grid; place-items: center; letter-spacing: 0.05em; }
.steps h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.steps p { font-size: 0.85rem; color: var(--grey); }
.cta { display: inline-block; background: var(--petrol); color: #fff; text-decoration: none; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.8rem; padding: 1.05rem 2.4rem; transition: background 0.3s, transform 0.3s; }
.cta:hover { background: var(--petrol-soft); transform: translateY(-2px); }

.invite-statement { font-weight: 900; font-size: clamp(1.15rem, 2.2vw, 1.7rem); color: var(--petrol); margin-top: 0.4rem; }

/* I · contact */
.contact { background: var(--paper-warm); display: flex; align-items: flex-end; min-height: 88vh; }
.contact-inner { width: 100%; }
.wordmark-big { font-weight: 900; font-size: clamp(2.4rem, 9vw, 7rem); letter-spacing: 0.06em; color: var(--petrol); margin-bottom: 2.2rem; line-height: 1; }
.contact-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 320px)); gap: 2rem; border-top: 1px solid var(--line); padding-top: 1.8rem; font-size: 0.9rem; }
.c-label { font-size: 0.66rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--petrol); margin-bottom: 0.5rem; }
.c-disclaimer { font-size: 0.72rem; color: var(--grey); margin-top: 2.4rem; max-width: 52em; }

/* ── touch devices: no hover-gated content ── */
@media (hover: none) {
  .vt-t { opacity: 1; transform: none; }
  .v-tile img { filter: grayscale(0.6) brightness(0.85); }
  .dots a span { display: none; }
  .compare { cursor: default; }
}

/* ── tablet (iPad Pro portrait ~1024px) ── */
@media (max-width: 1180px) and (min-width: 901px) {
  :root { --pad: clamp(1.4rem, 4vw, 3rem); }
  .voice-grid { grid-template-columns: repeat(2, 1fr); }
  .layers-stage { gap: 1.4rem; }
  .lstep h3 { font-size: 1.6rem; }
  .place-card { max-width: 460px; }
  .poi-view { width: min(400px, 44vw); }
  .pot-stats dd { font-size: clamp(1.4rem, 2.4vw, 2rem); }
}

/* ── iOS safe areas & dynamic toolbars ── */
.layers-sticky { height: 100svh; }
.scrollcue { bottom: calc(1.4rem + env(safe-area-inset-bottom)); }
.poi-rail { padding-bottom: calc(1.6rem + env(safe-area-inset-bottom)); }

/* ── responsive ── */
@media (max-width: 900px) {
  .hall { grid-template-columns: 1fr; }
  .potential { grid-template-columns: 1fr; }
  .voice-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 1.6rem; }
  .steps::before { display: none; }
  .contact-cols { grid-template-columns: 1fr; }
  .dots { display: none; }
  .v-tiles { flex-direction: column; height: auto; }
  .v-tile { min-height: 130px; }
  .v-tile .vt-t { opacity: 1; transform: none; }
  /* layers: no sticky theatre on small screens — plain stack */
  .layers { height: auto; padding: clamp(4rem, 10vh, 6rem) var(--pad); }
  .layers-sticky { position: static; height: auto; padding: 0; overflow: visible; }
  .layers-stage { grid-template-columns: 1fr; }
  .splat-wrap { aspect-ratio: 16 / 10; }
  .lchip { font-size: 0.55rem; padding: 0.42rem 0.6rem; letter-spacing: 0.13em; }
  .lchip.wide { font-size: 0.64rem; max-width: 18em; }
  .lstep, .lstep.active { position: static; transform: none; opacity: 1; pointer-events: auto; margin-bottom: 2rem; }
  .lprogress { display: none; }
  .layers-coda { position: static; margin-top: 1rem; }
  .poi-view { top: auto; bottom: calc(7.6rem + env(safe-area-inset-bottom)); transform: none; }
  .poi-view.open { transform: none; }
  .place-card { margin-right: var(--pad); padding: 1.1rem 1.2rem; }
  .place-card h2 { font-size: 1.45rem; }
  .place-card p { font-size: 0.86rem; }
  .contact-cols { grid-template-columns: 1fr; }
  .site-label { top: 4rem; right: 1rem; font-size: 0.56rem; max-width: 76vw; padding: 0.45rem 0.6rem; }
  .site-label span { letter-spacing: 0.1em; }
  .pr-item { width: min(210px, 62vw); }
  .compare { aspect-ratio: 1 / 1.05; }
  .steps { text-align: center; }
  .steps li { padding-top: 2.9rem; }
  .steps .s-num { left: 50%; transform: translateX(-50%); }
  .cta { font-size: 0.68rem; padding: 0.95rem 1.3rem; max-width: 92vw; line-height: 1.5; }
  .spin-hint { bottom: 0.55rem; font-size: 0.54rem; }
}

@media (max-width: 480px) {
  .chrome { padding: 0.9rem 1.2rem; }
  .wordmark { font-size: 0.74rem; letter-spacing: 0.24em; }
  .conf { font-size: 0.58rem; letter-spacing: 0.18em; }
  .display { font-size: clamp(3.6rem, 17vw, 5.2rem); }
  .site-label { top: 3.4rem; }
}