:root {
  --paper: #f2efe7;
  --ink: #1c1b19;
  --ink-soft: #5d5a54;
  --rule: rgba(28, 27, 25, 0.28);
  --sun: #b4572b;
  --card: rgba(242, 239, 231, 0.93);
  --f-draw: "Barlow Condensed", "Arial Narrow", "Noto Sans TC", sans-serif;
  --f-text: "Barlow", "Noto Sans TC", system-ui, sans-serif;
  --f-display: "Newsreader", "Noto Sans TC", Georgia, serif;
  --gutter: clamp(16px, 2.4vw, 40px);
}
:root[lang="zh-Hant"] { --f-display: "Noto Sans TC", "Newsreader", serif; }

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); }
body { font-family: var(--f-text); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }

#gl { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100lvh; display: block; z-index: 0; }
#track { height: 1000vh; }

/* ---- top bar ---- */
.bar {
  position: fixed; z-index: 5; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: calc(var(--gutter) * 0.7) var(--gutter);
  font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.14em; font-size: 13px;
  pointer-events: none;
}
.bar > * { pointer-events: auto; }
.mark { color: var(--ink); text-decoration: none; display: flex; gap: 0.7em; align-items: baseline; background: var(--card); border: 1px solid var(--rule); padding: 6px 12px 7px; }
.mark b { font-weight: 600; letter-spacing: 0.06em; text-transform: none; font-size: 17px; }
.mark span { color: var(--ink-soft); }
.lang { display: flex; border: 1px solid var(--rule); background: var(--card); }
.walk {
  margin-left: auto; margin-right: 10px; color: var(--ink); text-decoration: none;
  background: var(--card); border: 1px solid var(--rule); padding: 8px 12px; min-height: 36px; display: inline-flex; align-items: center; gap: 0.4em;
}
.walk .short { display: none; }
.walk:hover, .walk:focus-visible { border-color: var(--ink); }
.walk:focus-visible, .cta:focus-visible, .mark:focus-visible { outline: 2px solid var(--sun); outline-offset: 2px; }
.motion {
  margin-right: 10px; font: inherit; letter-spacing: inherit; text-transform: inherit; color: var(--ink-soft);
  background: var(--card); border: 1px solid var(--rule); padding: 7px 12px; min-height: 36px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.55em;
}
.motion i { width: 9px; height: 9px; border-radius: 50%; border: 1px solid currentColor; }
.motion[aria-pressed="true"] { color: var(--paper); background: var(--ink); border-color: var(--ink); }
.motion[aria-pressed="true"] i { background: currentColor; }
.motion:focus-visible { outline: 2px solid var(--sun); outline-offset: 2px; }
#dip { position: fixed; inset: 0; z-index: 1; background: var(--paper); opacity: 0; pointer-events: none; }
.cta-row { margin: 1.4em 0 0; }
.cta {
  display: inline-flex; gap: 0.5em; align-items: center; padding: 12px 18px; min-height: 44px;
  background: var(--ink); color: var(--paper); text-decoration: none;
  font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.14em; font-size: 14px;
}
.cta:hover { background: #000; }
#still { position: fixed; inset: 0; z-index: 9; background: var(--paper); display: grid; place-content: center; gap: 16px; padding: 24px; text-align: center; }
#still[hidden] { display: none; }
#still img, .nogl img { max-width: min(1100px, 100%); height: auto; border: 1px solid var(--rule); }
#still a, .nogl a { color: var(--ink); }
.lang button {
  font: inherit; letter-spacing: inherit; color: var(--ink-soft); background: none; border: 0;
  padding: 7px 12px; min-height: 36px; cursor: pointer;
}
.lang button[aria-pressed="true"] { color: var(--paper); background: var(--ink); }
.lang button:focus-visible { outline: 2px solid var(--sun); outline-offset: 2px; }

/* ---- copy windows, driven by scroll ---- */
.copy-layer { position: fixed; inset: 0; z-index: 3; pointer-events: none; }
.copy { position: absolute; opacity: 0; visibility: hidden; will-change: opacity, transform; }

/* desktop: placed by script on the empty field of the sheet, --zw is its width */
.hero { left: 61vw; top: 18vh; --zw: 420px; width: var(--zw); }
.kicker { font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.16em; font-size: 13px; color: var(--ink-soft); margin: 0 0 1.1em; }
.hero h1 { font-family: var(--f-display); font-weight: 400; font-size: min(calc(var(--zw) * 0.142), 84px); line-height: 0.98; letter-spacing: -0.015em; margin: 0 0 0.45em; }
.hero .h1 { font-family: var(--f-display); font-weight: 400; font-size: min(calc(var(--zw) * 0.142), 84px); line-height: 0.98; letter-spacing: -0.015em; margin: 0 0 0.45em; }
.hero h1 span, .hero h1 em, .hero .h1 span, .hero .h1 em { display: block; }
.hero h1 em, .hero .h1 em { font-style: italic; }
:root[lang="zh-Hant"] .hero h1 em, :root[lang="zh-Hant"] .hero .h1 em { font-style: normal; }
:root[lang="zh-Hant"] .hero h1, :root[lang="zh-Hant"] .hero .h1 { line-height: 1.14; letter-spacing: 0.02em; font-size: min(calc(var(--zw) * 0.122), 72px); word-break: keep-all; }
.lede { max-width: 30em; margin: 0; color: var(--ink); font-size: clamp(13.5px, calc(var(--zw) * 0.038), 17px); }
.tb { opacity: 0; }

.cap {
  left: var(--gutter); bottom: calc(var(--gutter) * 1.2); width: min(400px, calc(100vw - 2 * var(--gutter)));
  background: var(--card); border: 1px solid var(--rule); padding: 16px 18px 17px;
}
.cap .no { font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.14em; font-size: 13px; margin: 0 0 6px; color: var(--sun); }
.cap .say { margin: 0; font-size: 15.5px; }
.cap.lift { left: auto; right: var(--gutter); bottom: auto; top: 24vh; }

/* ---- title block readout ---- */
.tb {
  position: fixed; z-index: 4; right: var(--gutter); bottom: var(--gutter);
  display: grid; grid-template-columns: auto; min-width: 210px;
  font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.1em; font-size: 12px;
  background: var(--card); border: 1px solid var(--ink);
}
.tb > span { padding: 5px 10px; border-top: 1px solid var(--rule); }
.tb > span:first-child { border-top: 0; font-weight: 600; letter-spacing: 0.12em; }
.tb-row { display: flex; justify-content: space-between; gap: 16px; }
.tb-row i { font-style: normal; color: var(--ink-soft); }
.tb-row b { font-weight: 500; font-variant-numeric: tabular-nums; }
.tb-stage { color: var(--sun); }

/* ---- loader ---- */
#loader {
  position: fixed; inset: 0; z-index: 10; display: grid; place-content: center; gap: 12px; justify-items: center;
  background: var(--paper); font-family: var(--f-draw); text-transform: uppercase; letter-spacing: 0.18em; font-size: 13px;
  transition: opacity 0.6s ease;
}
#loader i { display: block; width: 180px; height: 1px; background: var(--rule); position: relative; }
#loader i::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: var(--p, 0%); background: var(--ink); }
#loader.done { opacity: 0; pointer-events: none; }
.record #loader.done { display: none; }
.nogl { position: fixed; inset: 0; display: grid; place-content: center; padding: 24px; text-align: center; }

/* ---- phone ---- */
@media (max-width: 760px) {
  .hero { left: var(--gutter); right: var(--gutter); width: auto; top: 84px; }
  .hero h1, .hero .h1 { font-size: clamp(36px, 10vw, 48px); }
  .lede { font-size: 15px; }
  .cap, .cap.lift { left: var(--gutter); right: var(--gutter); width: auto; top: auto; bottom: calc(var(--gutter) + 92px); }
  .tb { left: var(--gutter); right: var(--gutter); bottom: var(--gutter); grid-template-columns: 1fr 1fr; min-width: 0; }
  .tb > span:first-child, .tb-stage { grid-column: 1 / -1; }
  .tb > span { padding: 4px 8px; }
  .walk { padding: 7px 10px; margin-right: 8px; }
  .motion { padding: 7px 9px; margin-right: 6px; gap: 0.4em; }
  .lang button { padding: 7px 9px; }
  .walk .long { display: none; }
  .walk .short { display: inline; }
  .mark span { display: none; }
}
/* narrow phones: the header holds four controls, so everything tightens */
@media (max-width: 380px) {
  .bar { letter-spacing: 0.06em; font-size: 12px; }
  .mark { padding: 5px 8px 6px; }
  .mark b { font-size: 15px; letter-spacing: 0.02em; }
  .walk { padding: 7px 7px; margin-right: 5px; margin-left: auto; }
  .motion { padding: 7px 7px; margin-right: 5px; gap: 0.35em; }
  .lang button { padding: 7px 6px; }
}
@media (prefers-reduced-motion: reduce) {
  #loader { transition: none; }
}