/* ClipChop site. Same theme as the app (src/app.css in the ClipChop repo):
   near-black chrome, #151515 panels, white accent, Instrument Sans, plus the
   tool colours (cut red, timelapse blue, frame amber, caption green) and the
   icon's cyan→green gradient.

   Scroll animation: main.js writes a 0→1 progress `--p` onto every
   [data-scroll] element; the CSS below derives each effect from it. */

@font-face {
  font-family: "Instrument Sans";
  src: url("assets/fonts/InstrumentSans.ttf") format("truetype");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("assets/fonts/InstrumentSans-Italic.ttf") format("truetype");
  font-weight: 400 700;
  font-style: italic;
  font-display: swap;
}

:root {
  color-scheme: dark;

  /* App theme */
  --bg: #0e0e0e;
  --panel: #151515;
  --panel2: #1c1c1c;
  --line: #232323;
  --line-strong: #2a2a2a;
  --txt: #ededed;
  --dim: #7d7d7d;
  --accent: #f5f5f5;

  /* Tool colours */
  --cut: #ff5f57;
  --speed: #5b8dff;
  --frame: #febc2e;
  --capt: #8ee6b8;
  --mcp: #28c840;
  --cyan: #17d4ea;
  --green: #2df98b;
  --grad: linear-gradient(120deg, var(--cyan), var(--green));

  --font: "Instrument Sans", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* The whole type scale: five sizes, nothing else. */
  --fs-1: 14px;
  --fs-2: 18px;
  --fs-3: 26px;
  --fs-4: 52px;
  --fs-5: 96px;

  --gutter: 32px;
  --max: 1200px;
  --amb: var(--cyan);
}
@media (max-width: 760px) {
  :root {
    --fs-3: 22px;
    --fs-4: 36px;
    --fs-5: 64px;
    --gutter: 16px;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  background: var(--bg);
  overflow-x: clip;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font);
  font-size: var(--fs-2);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
h1, h2, h3, p, ul, figure {
  margin: 0;
}
img, video {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}
.dim {
  color: var(--dim);
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 8px;
  font-size: var(--fs-1);
  font-weight: 600;
  text-decoration: none;
}
.skip:focus {
  top: 16px;
}

/* ---- Ambient colour wash (follows the section in view) ---- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.ambient i {
  position: absolute;
  width: 70vmax;
  height: 70vmax;
  border-radius: 50%;
  background: var(--amb);
  filter: blur(120px);
  opacity: 0.09;
  transition: background-color 1.2s var(--ease);
}
.ambient i:first-child {
  left: -30vmax;
  top: -25vmax;
}
.ambient i:last-child {
  right: -35vmax;
  bottom: -35vmax;
  opacity: 0.06;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--panel2);
  color: var(--txt);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  font-size: var(--fs-1);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition:
    border-color 0.2s var(--ease),
    transform 0.25s var(--ease-out),
    box-shadow 0.25s var(--ease-out);
}
.btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}
.btn.primary:hover {
  box-shadow: 0 8px 30px -8px color-mix(in srgb, var(--green) 60%, transparent);
}
.btn.sm {
  padding: 7px 14px;
}
.text-link {
  color: var(--dim);
  font-size: var(--fs-1);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-strong);
}
.text-link:hover {
  color: var(--txt);
}

/* ---- Top bar (appears after the hero) ---- */
.topbar {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  width: max-content;
  padding: 8px 8px 8px 14px;
  background: color-mix(in srgb, var(--panel) 80%, transparent);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 14px;
  transform: translate(-50%, -90px);
  transition: transform 0.5s var(--ease);
}
.topbar.show {
  transform: translate(-50%, 0);
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-1);
  font-weight: 600;
  text-decoration: none;
}

/* ---- Hero ---- */
.hero {
  padding: 14vh var(--gutter) 0;
  text-align: center;
}
.hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-icon {
  width: 96px;
  height: 96px;
  animation: icon-in 1.1s var(--ease-out) both;
}
@keyframes icon-in {
  from {
    opacity: 0;
    transform: translateY(20px) rotate(-25deg) scale(0.7);
  }
}
.wordmark {
  margin-top: 12px;
  font-size: var(--fs-5);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.1;
}
.wordmark,
.wavy-char {
  background: linear-gradient(180deg, #fff 30%, #9a9a9a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.wordmark.wavy {
  background: none;
}
/* The app's wavy letter effect (src/app.css .wavy-char). */
.wavy-char {
  display: inline-block;
  /* Room for glyph overhang (tight tracking pushes the last "p" past its box,
     and background-clip: text would crop it). */
  padding: 0 0.1em 0.12em;
  margin: 0 -0.1em -0.12em;
  background-clip: text;
  animation: wavy 4.2s ease-in-out infinite;
  animation-delay: calc(1.2s + var(--i) * 0.07s);
}
@keyframes wavy {
  0%, 20%, 100% { transform: translateY(0); }
  10% { transform: translateY(-10px); }
}
.tagline {
  margin-top: 20px;
  font-size: var(--fs-3);
  line-height: 1.3;
  font-weight: 500;
}
.dl-block {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.hero-text > * {
  animation: rise 0.9s var(--ease-out) both;
}
.hero-text > :nth-child(2) { animation-delay: 0.08s; }
.hero-text > :nth-child(3) { animation-delay: 0.16s; }
.hero-text > :nth-child(4) { animation-delay: 0.24s; }
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
}

/* Stacked (mobile/tablet): the video card tips back flat as it scrolls toward
   the middle of the screen. */
.hero-video {
  --t: clamp(0, (0.5 - var(--p, 0)) / 0.3, 1);
  margin: 9vh auto 0;
  max-width: var(--max);
  perspective: 1600px;
}

/* Desktop: text left, video right, one screen tall. The card swings in on
   load, then tips away as the hero scrolls off. */
@media (min-width: 1100px) {
  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: center;
    gap: 56px;
    max-width: 1440px;
    min-height: 100vh;
    min-height: 100svh;
    margin: 0 auto;
    padding: 96px var(--gutter) 64px;
    text-align: left;
  }
  .hero-text,
  .dl-block {
    align-items: flex-start;
  }
  .dl-block {
    flex-direction: row;
    align-items: center;
    gap: 20px;
  }
  .hero-video {
    --t: 0;
    --o: clamp(0, (var(--p, 0) - 0.5) / 0.4, 1);
    margin: 0;
    animation: card-in 1.3s 0.2s var(--ease-out) both;
  }
  .hero-video .video-card {
    transform-origin: 0% 50%;
    transform: rotateY(calc(var(--o) * -16deg)) rotateX(calc(var(--o) * 8deg)) scale(calc(1 - var(--o) * 0.08));
  }
}
@keyframes card-in {
  from {
    opacity: 0;
    transform: perspective(1600px) translateX(80px) rotateY(-28deg);
  }
}
.video-card {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  transform-origin: 50% 100%;
  transform: rotateX(calc(var(--t) * 26deg)) scale(calc(1 - var(--t) * 0.1));
  box-shadow:
    0 40px 120px -40px color-mix(in srgb, var(--cyan) 45%, transparent),
    0 30px 80px -30px #000;
  will-change: transform;
}
.video-card::after {
  /* gradient hairline */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, color-mix(in srgb, var(--cyan) 60%, transparent), transparent 40%, transparent 60%, color-mix(in srgb, var(--green) 50%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.video-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.play {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border: 0;
  background: radial-gradient(circle at 50% 50%, #0006, #0000 60%);
  color: var(--accent);
  font: 600 var(--fs-1) var(--font);
  cursor: pointer;
}
.play svg {
  width: 84px;
  height: 84px;
  padding: 24px 22px 24px 26px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid #ffffff30;
  transition: transform 0.35s var(--ease-out), background 0.2s;
}
.play:hover svg {
  transform: scale(1.08);
  background: color-mix(in srgb, var(--accent) 24%, transparent);
}
.play.hidden {
  display: none;
}

/* Launch video in focus (main.js moves the card to <body> and flies it). */
.video-card.focus {
  position: fixed;
  z-index: 91;
  margin: 0;
  transform: none;
  transform-origin: 0 0;
  box-shadow:
    0 40px 160px -30px color-mix(in srgb, var(--cyan) 40%, transparent),
    0 30px 100px -20px #000;
}
.video-ph {
  visibility: hidden;
}
.video-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgb(0 0 0 / 0.78);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  cursor: zoom-out;
  transition: opacity 0.5s var(--ease);
}
.video-scrim.on {
  opacity: 1;
  pointer-events: auto;
}
.scroll-locked,
.scroll-locked body {
  overflow: hidden;
}

/* ---- Pinned scenes ---- */
.scene.pin {
  height: 190vh;
}
.scene.pin.tall {
  height: 280vh;
}
.stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 0 var(--gutter);
  overflow: hidden;
  text-align: center;
}
.kinetic {
  font-size: var(--fs-4);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 16em;
}
.scene-sub {
  font-size: var(--fs-2);
  color: var(--dim);
}

/* Scene: cut. --a draws the red region over the filler words, --b closes the gap. */
#cut {
  --a: clamp(0, (var(--p) - 0.12) / 0.28, 1);
  --b: clamp(0, (var(--p) - 0.5) / 0.25, 1);
}
.cutspan {
  position: relative;
  display: inline-block;
  vertical-align: bottom;
  white-space: nowrap;
  overflow: hidden;
  max-width: calc((1 - var(--b)) * 9em);
  padding-right: calc((1 - var(--b)) * 0.28em);
  color: color-mix(in srgb, var(--dim) calc(var(--a) * 100%), var(--txt));
}
.cut-region {
  position: absolute;
  inset: 0.08em 0.12em 0.08em 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--cut);
  border-radius: 10px;
  background: repeating-linear-gradient(-45deg, #ff5f5755 0 10px, #ff5f5722 10px 20px);
  box-shadow: 0 0 40px -6px #ff5f5799;
  transform-origin: 0 50%;
  transform: scaleX(var(--a));
}
.cut-region b {
  font-size: var(--fs-1);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  opacity: clamp(0, (var(--a) - 0.7) * 4, 1);
}
.cut-saved {
  color: var(--cut);
  opacity: var(--b);
  transform: translateY(calc((1 - var(--b)) * 16px));
}

/* Scene: timelapse. Each extra "o" collapses in turn; the ruler races. */
#speed {
  --q: clamp(0, (var(--p) - 0.15) / 0.6, 1);
}
.slow-line .o {
  --k: clamp(0, (var(--q) - var(--i) * 0.09) / 0.12, 1);
  display: inline-block;
  vertical-align: bottom;
  overflow: hidden;
  max-width: calc((1 - var(--k)) * 0.62em);
  opacity: calc(1 - var(--k));
  color: color-mix(in srgb, var(--speed) calc(var(--k) * 100%), var(--txt));
  transform: translateY(calc(var(--k) * -0.2em));
}
.ruler {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 140px;
  transform: translateY(-50%);
  background:
    repeating-linear-gradient(90deg, #5b8dff55 0 2px, transparent 2px 120px) 0 0 / auto 100% repeat-x,
    repeating-linear-gradient(90deg, #5b8dff26 0 1px, transparent 1px 24px) 0 70% / auto 30% repeat-x;
  background-position-x: calc(var(--p) * var(--p) * -6000px), calc(var(--p) * var(--p) * -6000px);
  -webkit-mask: linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
  mask: linear-gradient(90deg, transparent, #000 20%, #000 80%, transparent);
  opacity: calc(0.3 + var(--q) * 0.7);
}
.speed-pill {
  position: relative;
  padding: 6px 18px;
  border: 2px solid var(--speed);
  border-radius: 10px;
  background: #5b8dff26;
  color: #fff;
  font-size: var(--fs-3);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 0 calc(var(--q) * 60px) -4px var(--speed);
}

/* Scene: captions. Words rise in, the current one glows green. */
#captions {
  --q: clamp(0, (var(--p) - 0.18) / 0.62, 1);
}
.cap-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-1);
  color: var(--dim);
}
.cap-status .track,
.render-bar {
  position: relative;
  width: 180px;
  height: 6px;
  border-radius: 999px;
  background: var(--line-strong);
  overflow: hidden;
}
.cap-status .track i,
.render-bar i {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--capt);
  transform-origin: 0 50%;
  transform: scaleX(var(--q));
}
.cap-status .pct {
  min-width: 3ch;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.cap-status.done {
  color: var(--capt);
}
.cap-plate {
  max-width: 15em;
  padding: 18px 28px;
  border-radius: 14px;
  background: #000c;
  font-size: var(--fs-4);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.cap-plate .w {
  --on: clamp(0, var(--q) * var(--n) * 1.05 - var(--i), 1);
  display: inline-block;
  opacity: calc(0.12 + var(--on) * 0.88);
  transform: translateY(calc((1 - var(--on)) * 0.35em));
  transition: color 0.25s, text-shadow 0.25s;
}
.cap-plate .w.hot {
  color: var(--capt);
  text-shadow: 0 0 30px #8ee6b880;
}
.wave {
  position: relative;
  display: flex;
  align-items: center;
  gap: 3px;
  width: min(720px, 100%);
  height: 64px;
}
.wave span:not(.wave-head) {
  flex: 1;
  border-radius: 2px;
  background: var(--capt);
  opacity: 0.35;
  height: var(--h);
}
.wave span.lit {
  opacity: 0.9;
}
.wave-head {
  position: absolute;
  top: -6px;
  bottom: -6px;
  width: 2px;
  background: #fff;
  left: calc(var(--q) * 100%);
  box-shadow: 0 0 12px #fff;
}

/* Scene: frames. A frame draws over the path, fills black, then a title and sticker land. */
#frames {
  --a: clamp(0, (var(--p) - 0.1) / 0.25, 1);
  --b: clamp(0, (var(--p) - 0.38) / 0.12, 1);
  --c: clamp(0, (var(--p) - 0.55) / 0.12, 1);
  --d: clamp(0, (var(--p) - 0.68) / 0.12, 1);
}
.redact {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
  padding: 40px 0;
}
.path {
  position: relative;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: var(--fs-2);
  color: var(--txt);
  word-break: break-all;
  max-width: 100%;
}
.frame-box {
  position: absolute;
  left: -6px;
  top: -6px;
  bottom: -6px;
  width: calc((100% + 12px) * var(--a));
  border: 2px solid var(--frame);
  border-radius: 6px;
  background: rgb(0 0 0 / var(--b));
  box-shadow: 0 0 calc(var(--a) * 36px) -6px var(--frame);
  opacity: min(1, calc(var(--a) * 6));
}
.frame-box i {
  position: absolute;
  width: 9px;
  height: 9px;
  background: var(--frame);
  border-radius: 2px;
  opacity: calc(1 - var(--b));
}
.frame-box i:nth-child(1) { left: -5px; top: -5px; }
.frame-box i:nth-child(2) { right: -5px; top: -5px; }
.frame-box i:nth-child(3) { left: -5px; bottom: -5px; }
.frame-box i:nth-child(4) { right: -5px; bottom: -5px; }
.title-pop {
  font-size: var(--fs-4);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  opacity: var(--c);
  transform: scale(calc(0.6 + var(--c) * 0.4)) translateY(calc((1 - var(--c)) * 30px));
  filter: blur(calc((1 - var(--c)) * 8px));
}
.sticker {
  position: absolute;
  right: -40px;
  bottom: -50px;
  width: 190px;
  opacity: var(--d);
  transform: translate(calc((1 - var(--d)) * 160px), calc((1 - var(--d)) * -260px)) rotate(calc(12deg - (1 - var(--d)) * 120deg)) scale(calc(0.6 + var(--d) * 0.4));
  filter: drop-shadow(0 12px 24px #000a);
}
@media (max-width: 760px) {
  .sticker {
    right: -6px;
    bottom: -40px;
    width: 120px;
  }
}

/* Scene: AI. Prompt types, ten edits drop onto a mini timeline, then a tweak. */
#ai {
  --tl: clamp(0, (var(--p) - 0.3) / 0.36, 1);
  --f: clamp(0, (var(--p) - 0.76) / 0.14, 1);
}
.ai-head {
  font-size: var(--fs-4);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.ai-head .c-grad {
  display: inline;
}
.ai-prompt {
  display: flex;
  align-items: center;
  gap: 10px;
  width: min(760px, 100%);
  min-height: 56px;
  padding: 14px 18px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: var(--fs-2);
  text-align: left;
}
.ai-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--mcp);
  box-shadow: 0 0 12px var(--mcp);
}
.caret {
  width: 2px;
  height: 1.2em;
  background: var(--txt);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}
.mini-tl {
  position: relative;
  display: grid;
  gap: 8px;
  width: min(960px, 100%);
  padding: 16px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
}
.lane-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  align-items: center;
  gap: 12px;
}
.lbl {
  font-size: var(--fs-1);
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: left;
}
.lane {
  position: relative;
  height: 40px;
  border-radius: 8px;
  background: var(--panel2);
}
.lane.video {
  background: linear-gradient(180deg, #2a3350, #232a44);
}
.chip {
  --k: clamp(0, (var(--p) - var(--s)) / 0.035, 1);
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: var(--x);
  width: var(--w);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid;
  border-radius: 7px;
  font-size: var(--fs-1);
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  opacity: var(--k);
  transform: translateY(calc((1 - var(--k)) * -48px)) scale(calc(0.7 + var(--k) * 0.3));
}
.chip.cut {
  border-color: var(--cut);
  background: repeating-linear-gradient(-45deg, #ff5f5766 0 5px, #ff5f5722 5px 10px);
}
.chip.speed {
  border-color: var(--speed);
  background: #5b8dff40;
  box-shadow: 0 0 16px -2px #5b8dffaa;
}
.chip.frame {
  border-color: var(--frame);
  background: #000;
}
.chip.frame.title {
  background: #febc2e30;
  justify-content: flex-start;
  padding-left: 8px;
}
.chip.capt {
  border-color: #8ee6b8aa;
  background: #8ee6b830;
  border-width: 1px;
}
.chip.tweak-grow {
  width: calc(var(--w) + var(--f) * 4%);
  outline: 2px solid rgb(255 255 255 / calc(var(--f) * (1 - var(--f)) * 4));
  outline-offset: 2px;
}
.chip.tweak-move {
  left: calc(var(--x) - var(--f) * 5%);
  outline: 2px solid rgb(255 255 255 / calc(var(--f) * (1 - var(--f)) * 4));
  outline-offset: 2px;
}
.tl-head {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: calc(118px + (100% - 134px) * var(--tl));
  width: 2px;
  background: #fff;
  box-shadow: 0 0 10px #fff;
  opacity: calc(var(--tl) * 6 * (1 - var(--f)));
}
@media (max-width: 760px) {
  .lane-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .tl-head {
    left: calc(16px + (100% - 32px) * var(--tl));
  }
  .chip {
    font-size: 0;
  }
}
.ai-status {
  font-size: var(--fs-2);
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}
.ai-status.done {
  color: var(--mcp);
}

/* Scene: render */
#render {
  --q: clamp(0, (var(--p) - 0.1) / 0.65, 1);
}
.render-pct {
  font-size: var(--fs-5);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.render-bar {
  width: min(720px, 100%);
  height: 10px;
}
.render-bar i {
  background: var(--accent);
  transition: background 0.4s;
}
#render.done .render-bar i {
  background: var(--grad);
}
#render.done .render-pct {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
#render.done [data-render-status] {
  color: var(--green);
}

/* ---- Feature rows ---- */
.feature {
  display: grid;
  grid-template-columns: 5fr 7fr;
  align-items: center;
  gap: 64px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 18vh var(--gutter);
}
.feature.flip {
  grid-template-columns: 7fr 5fr;
}
.feature.flip .feature-text {
  order: 2;
}
.feature-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  transform: translateY(calc((var(--p, 0.5) - 0.5) * -60px));
}
.feature-text h2 {
  font-size: var(--fs-4);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.feature-text p {
  color: #bdbdbd;
}
.fine {
  font-size: var(--fs-1);
  color: var(--dim) !important;
}
.c-cut { color: var(--cut); }
.c-speed { color: var(--speed); }
.c-capt { color: var(--capt); }
.c-frame { color: var(--frame); }
.c-grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  list-style: none;
}
.chips li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: var(--fs-1);
  color: var(--txt);
}
.chips li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c, var(--dim));
  box-shadow: 0 0 8px var(--c, transparent);
}

/* Loop card: unfolds from a clipped sliver and swings flat as it crosses the screen. */
.loop-card {
  --e: clamp(0, var(--p, 0.5) / 0.38, 1);
  --dir: 1;
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 18px;
  background: var(--panel);
  transform: perspective(1400px) rotateY(calc((var(--p, 0.5) - 0.5) * var(--dir) * -34deg)) translateY(calc((0.5 - var(--p, 0.5)) * 50px));
  clip-path: inset(calc((1 - var(--e)) * 22%) calc((1 - var(--e)) * 8%) round 18px);
  will-change: transform, clip-path;
}
.feature.flip .loop-card {
  --dir: -1;
}
.loop-card::before {
  /* tinted glow from the section's tool colours */
  content: "";
  position: absolute;
  inset: 8% 6% -6%;
  z-index: -1;
  border-radius: 40px;
  background: linear-gradient(120deg, var(--tint), var(--tint2));
  filter: blur(60px);
  opacity: calc(var(--e) * 0.35);
}
.loop-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
}
@media (max-width: 900px) {
  .feature,
  .feature.flip {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 12vh var(--gutter);
  }
  .feature.flip .feature-text {
    order: 0;
  }
}

/* ---- Personal note ---- */
.note {
  padding: 22vh var(--gutter);
}
.note-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.avatar {
  width: 64px;
  height: 64px;
  padding: 10px;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--line);
}
.note h2 {
  font-size: var(--fs-4);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.reveal {
  font-size: var(--fs-3);
  line-height: 1.45;
  font-weight: 500;
  --q: clamp(0, (var(--p, 1) - 0.18) / 0.42, 1);
}
.reveal .rw {
  --on: clamp(0, var(--q) * var(--n) - var(--i), 1);
  opacity: calc(0.16 + var(--on) * 0.84);
}
.sig {
  color: var(--dim);
}

/* ---- Get ClipChop ---- */
.get {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16vh var(--gutter) 22vh;
  text-align: center;
}
.get-title {
  --g: clamp(0, (var(--p, 0.5) - 0.1) / 0.32, 1);
  font-size: var(--fs-5);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1;
  white-space: nowrap;
}
@media (max-width: 560px) {
  .get-title {
    white-space: normal;
  }
}
.get-title .half {
  display: inline-block;
}
.get-title .l {
  transform: translateX(calc((1 - var(--g)) * -24vw));
}
.get-title .r {
  transform: translateX(calc((1 - var(--g)) * 24vw));
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.get-lead {
  margin-top: 24px;
  color: var(--dim);
}
.platforms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
  text-align: left;
}
.plat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: transform 0.4s var(--ease-out), border-color 0.3s;
}
.plat:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.plat.mine {
  border-color: transparent;
  background:
    linear-gradient(var(--panel), var(--panel)) padding-box,
    var(--grad) border-box;
  box-shadow: 0 30px 80px -40px color-mix(in srgb, var(--green) 60%, transparent);
}
.plat.mine::after {
  content: "Your system";
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: var(--fs-1);
  color: var(--green);
}
.plat-icon {
  width: 32px;
  height: 32px;
  color: var(--txt);
}
.plat h3 {
  font-size: var(--fs-3);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.plat-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
@media (max-width: 900px) {
  .platforms {
    grid-template-columns: 1fr;
  }
}

/* ---- Footer ---- */
.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px var(--gutter) 96px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-1);
  color: var(--dim);
}
.footer a {
  text-decoration: none;
}
.footer a:hover {
  color: var(--txt);
}
.footer .sp {
  flex: 1;
}

/* ---- Scrubber: the page as a timeline ---- */
.scrubber {
  position: fixed;
  left: 50%;
  bottom: 14px;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(760px, calc(100vw - 32px));
  padding: 10px 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  transform: translate(-50%, 90px);
  transition: transform 0.5s var(--ease);
}
.scrubber.show {
  transform: translate(-50%, 0);
}
.tc {
  font-size: var(--fs-1);
  font-variant-numeric: tabular-nums;
}
.scrub-track {
  position: relative;
  flex: 1;
  height: 18px;
  display: flex;
  gap: 2px;
}
.scrub-seg {
  position: relative;
  height: 100%;
  border-radius: 4px;
  background: color-mix(in srgb, var(--c) 22%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 55%, transparent);
  transition: background 0.3s;
}
.scrub-seg:hover,
.scrub-seg.on {
  background: color-mix(in srgb, var(--c) 50%, transparent);
}
.scrub-seg span {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translate(-50%, 4px);
  padding: 4px 8px;
  border-radius: 7px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: var(--fs-1);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s var(--ease-out);
}
.scrub-seg:hover span,
.scrub-seg:focus-visible span {
  opacity: 1;
  transform: translate(-50%, 0);
}
.scrub-head {
  position: absolute;
  top: -5px;
  bottom: -5px;
  left: 0;
  z-index: 1;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 10px #fff;
  pointer-events: none;
}
.scrub-head::before {
  content: "";
  position: absolute;
  top: -6px;
  left: -5px;
  border: 6px solid transparent;
  border-top: 7px solid #fff;
}
@media (max-width: 760px) {
  .scrubber .tc.dim {
    display: none;
  }
}

/* ---- Reduced motion: no scrubbing, no pinning, final states shown ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .scene.pin,
  .scene.pin.tall {
    height: auto;
  }
  .stage {
    position: static;
    height: auto;
    padding-block: 14vh;
  }
  .video-card,
  .loop-card,
  .feature-text,
  .get-title .half {
    transform: none !important;
    clip-path: none !important;
  }
}