:root {
  --canvas: #080a0b;
  --surface: #101313;
  --ink: #f0f1ee;
  --muted: #a0a7a1;
  --signal: #b99a6c;
  --line: rgba(240, 241, 238, 0.15);
  --font-display: "Syne", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--canvas); }
body { margin: 0; color: var(--ink); background: var(--canvas); font-family: var(--font-body); }
button, a { font: inherit; }
button { color: inherit; }

.topbar {
  position: fixed; z-index: 10; top: 16px; left: 50%; display: grid; grid-template-columns: minmax(170px, 1fr) auto minmax(170px, 1fr); align-items: center;
  width: min(1120px, calc(100% - 36px)); min-height: 62px; padding: 7px 10px 7px 18px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px;
  color: #e7e8e4; background: rgba(10, 13, 13, .92); box-shadow: 0 20px 42px rgba(0,0,0,.3); backdrop-filter: blur(18px);
  transform: translateX(-50%);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: inherit; font-size: 12px; font-weight: 700; text-decoration: none; }
.brand img { width: 23px; height: 23px; }
.topnav { display: flex; align-items: center; gap: clamp(15px, 2vw, 30px); }
.topnav a { position: relative; padding: 12px 0; color: rgba(232,234,230,.57); font-size: 11px; text-decoration: none; }
.topnav a::after { position: absolute; right: 0; bottom: 7px; left: 0; height: 1px; content: ""; background: var(--signal); transform: scaleX(0); transition: transform .2s ease; }
.topnav a:hover, .topnav a.is-active { color: var(--ink); }
.topnav a.is-active::after { transform: scaleX(1); }
.return-link, .back-button { justify-self: end; display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 19px; border-radius: 999px; color: #101312; background: var(--ink); font-size: 11px; font-weight: 700; text-decoration: none; transition: transform .2s ease, background-color .2s ease; }
.return-link:hover, .back-button:hover { transform: translateY(-2px); background: #fff; }

.hero { display: grid; grid-template-columns: minmax(320px, .77fr) minmax(0, 1.23fr); min-height: min(860px, 100vh); padding: 128px max(6vw, 72px) 60px; gap: clamp(40px, 7vw, 130px); align-items: center; }
.hero-copy { max-width: 520px; }
.eyebrow { margin: 0 0 20px; color: var(--signal); font: 10px/1.2 var(--font-display); letter-spacing: .14em; }
h1, h2 { margin: 0; font-family: var(--font-display); font-weight: 600; letter-spacing: -.075em; }
h1 { max-width: 600px; font-size: clamp(52px, 6.1vw, 108px); line-height: .88; }
.hero-en { margin: 22px 0 0; color: rgba(240,241,238,.65); font: 10px/1.3 var(--font-display); letter-spacing: .12em; }
.hero-intro { max-width: 440px; margin: 35px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.hero-facts { display: grid; grid-template-columns: 1fr 1fr; margin: 34px 0 0; border-top: 1px solid var(--line); }
.hero-facts div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.hero-facts div + div { padding-left: 16px; border-left: 1px solid var(--line); }
.hero-facts dt { color: var(--muted); font: 8px/1.3 var(--font-display); letter-spacing: .11em; text-transform: uppercase; }
.hero-facts dd { margin: 6px 0 0; font-size: 13px; }
.hero-link { display: inline-flex; gap: 12px; margin-top: 32px; color: var(--ink); font-size: 12px; text-decoration: none; }
.hero-link span { color: var(--signal); }

.hero-image { position: relative; width: 100%; min-height: 0; aspect-ratio: 1.367; padding: 0; overflow: hidden; border: 1px solid var(--line); background: #151917; cursor: zoom-in; }
.hero-image::after, .accordion-panel::after { position: absolute; inset: 0; content: ""; pointer-events: none; }
.hero-image img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.hero-image:hover img { transform: scale(1.025); }
.image-caption { position: absolute; z-index: 1; right: 17px; bottom: 14px; left: 17px; display: flex; justify-content: space-between; color: #fff; font: 9px/1 var(--font-display); letter-spacing: .1em; }
.image-caption strong { font-weight: 600; }

.render-archive { padding: 120px max(6vw, 72px) 140px; border-top: 1px solid var(--line); }
.archive-head { display: flex; gap: 40px; justify-content: space-between; align-items: end; max-width: 1280px; margin: 0 auto 56px; }
h2 { font-size: clamp(46px, 5vw, 84px); line-height: .91; }
.archive-head > p { max-width: 280px; margin: 0 0 4px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.case-accordion { display: flex; height: clamp(470px, 58vw, 760px); max-width: 1500px; gap: 8px; margin: 0 auto; }
.accordion-panel { position: relative; flex: 1 1 0; min-width: 0; height: 100%; padding: 0; overflow: hidden; border: 0; background: var(--surface); cursor: zoom-in; transition: flex .65s cubic-bezier(.2,.7,.2,1); }
.accordion-panel::after { border: 1px solid var(--line); }
.accordion-panel img { display: block; width: 100%; height: 100%; object-fit: cover; filter: saturate(.42) brightness(.56); transition: transform .8s cubic-bezier(.2,.7,.2,1), filter .4s ease-out; }
.accordion-panel.is-active { flex: 4.8 1 0; }
.accordion-panel.is-active img, .accordion-panel:hover img, .accordion-panel:focus-visible img { filter: saturate(1) brightness(1); transform: scale(1.012); }
.accordion-panel:focus-visible { z-index: 1; outline: 2px solid var(--signal); outline-offset: 4px; }
.panel-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,8,8,.32), rgba(6,8,8,.82)); transition: background .3s ease-out; }
.accordion-panel.is-active .panel-shade, .accordion-panel:hover .panel-shade, .accordion-panel:focus-visible .panel-shade { background: linear-gradient(180deg, rgba(6,8,8,.02), rgba(6,8,8,.6)); }
.panel-index, .panel-title { position: absolute; bottom: 18px; z-index: 1; white-space: nowrap; }
.panel-index { left: 16px; color: var(--signal); font: 10px/1 "DM Mono", monospace; letter-spacing: .1em; }
.panel-title { right: 18px; color: #fff; font-size: 13px; font-weight: 500; opacity: 0; transform: translateY(8px); transition: opacity .26s ease-out, transform .26s ease-out; }
.accordion-panel.is-active .panel-title, .accordion-panel:hover .panel-title, .accordion-panel:focus-visible .panel-title { opacity: 1; transform: translateY(0); }
.archive-readout { display: grid; grid-template-columns: 96px minmax(180px,.42fr) minmax(260px,.58fr); gap: 24px; align-items: start; max-width: 1500px; margin: 0 auto; padding: 24px 0; border-bottom: 1px solid var(--line); }
.archive-readout > span { color: var(--signal); font: 10px/1.5 "DM Mono", monospace; letter-spacing: .1em; }
.archive-readout strong { font-size: 17px; }
.archive-readout p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

footer { display: flex; gap: 24px; align-items: center; justify-content: space-between; padding: 32px max(6vw, 72px); border-top: 1px solid var(--line); color: var(--muted); }
footer p { margin: 0; font-size: 11px; }

@media (max-width: 850px) {
  .topbar { grid-template-columns: 1fr auto; }
  .topnav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 128px 24px 72px; }
  .hero-copy { max-width: none; }
  .render-archive { padding: 86px 24px; }
  .archive-head { display: block; margin-bottom: 36px; }
  .archive-head > p { margin-top: 22px; }
  footer { padding: 28px 24px; }
}

@media (max-width: 560px) {
  .topbar { top: 10px; width: calc(100% - 20px); min-height: 54px; padding: 5px 6px 5px 13px; }
  .brand { font-size: 11px; }
  .return-link { min-height: 38px; padding: 0 13px; font-size: 10px; }
  .hero { padding-top: 104px; }
  h1 { font-size: clamp(48px, 16vw, 72px); }
  .hero-facts { max-width: 100%; }
  .case-accordion { display: grid; height: auto; gap: 8px; }
  .accordion-panel { height: 92px; transition: height .52s cubic-bezier(.2,.7,.2,1); }
  .accordion-panel.is-active { height: min(72vw, 430px); }
  .panel-title { opacity: 1; transform: none; }
  .archive-readout { grid-template-columns: 1fr; gap: 10px; }
  footer { display: block; }
  .back-button { margin-top: 18px; }
}