/* Patch Gap — patchgap.dev
   Palette: the channel's 3D world (indigo night) plus the brief's severity tokens.
   Red means failure, green means fixed, duck yellow is the one warm accent. */

:root {
  --night: #07061a;
  --deep: #120e38;
  --indigo: #231c66;
  --violet: #7c6cff;
  --lilac: #b7acff;
  --top: #3b3299;
  --face: #1e1958;
  --side: #130f3f;
  --depth: #3b2f95;
  --green: #34d399;
  --red: #ff3b5c;
  --amber: #f59e0b;
  --cyan: #38bdf8;
  --duck: #ffd23f;
  --manila: #f2c14e;
  --paper: #f4ebd0;
  --paper-ink: #2b2418;
  --text: #e6edf3;
  --muted: #a6a3cf;
  --line: rgba(183, 172, 255, 0.14);

  --f-title: "Space Grotesk", system-ui, sans-serif;
  --f-body: "Inter", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;

  --gutter: 24px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  color-scheme: dark;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
body {
  margin: 0;
  background: var(--night);
  color: var(--text);
  font: 400 17px/1.65 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
/* a fine grain over everything, like the paper grain in the art */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
.mono { font-family: var(--f-mono); }
.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 200; background: var(--duck); color: #000; padding: 8px 12px; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--duck); outline-offset: 3px; border-radius: 6px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  font: 600 16px/1 var(--f-body);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s, background 0.25s, border-color 0.25s;
}
.btn svg { width: 20px; height: 20px; fill: currentColor; flex: none; }
.btn-sub {
  background: var(--duck);
  color: #17120a;
  box-shadow: 0 0 0 0 rgba(255, 210, 63, 0.5), 0 10px 30px -10px rgba(255, 210, 63, 0.6);
}
.btn-sub:hover { transform: translateY(-2px); box-shadow: 0 0 0 6px rgba(255, 210, 63, 0.14), 0 16px 40px -12px rgba(255, 210, 63, 0.8); }
.btn-ghost { border: 1px solid rgba(183, 172, 255, 0.35); background: rgba(35, 28, 102, 0.35); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--lilac); transform: translateY(-2px); }
.btn.sm { padding: 9px 14px; font-size: 14px; border-radius: 10px; }
.btn.sm svg { width: 17px; height: 17px; }
.btn.lg { padding: 18px 28px; font-size: 18px; }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(7, 6, 26, 0.72); backdrop-filter: blur(14px) saturate(140%); border-color: var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 15px/1 var(--f-title); letter-spacing: 0.14em; }
.brand img { border-radius: 50%; box-shadow: 0 0 0 2px rgba(255, 210, 63, 0.4); }
.nav-links { display: flex; gap: 28px; }
.nav-links a { text-decoration: none; font-size: 14px; color: var(--muted); transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 110px 0 90px;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 70% at 50% 28%, #2b2378 0%, #18114c 42%, var(--night) 100%);
  isolation: isolate;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.beam {
  position: absolute;
  left: 50%;
  top: -12%;
  width: min(900px, 90vw);
  height: 95%;
  transform: translateX(calc(-50% + var(--mx, 0) * -12px));
  background: radial-gradient(ellipse 34% 100% at 50% 0%, rgba(160, 140, 255, 0.34), transparent 75%);
  filter: blur(18px);
  animation: beam 7s ease-in-out infinite alternate;
}
.beam-2 { width: min(420px, 50vw); background: radial-gradient(ellipse 40% 100% at 50% 0%, rgba(220, 210, 255, 0.2), transparent 70%); animation-duration: 5s; }
@keyframes beam { from { opacity: 0.75; } to { opacity: 1; } }
#bokeh { position: absolute; inset: 0; width: 100%; height: 100%; }
.floor {
  position: absolute;
  left: -60%;
  right: -60%;
  bottom: -8%;
  height: 58%;
  background-image:
    linear-gradient(rgba(124, 108, 255, 0.34) 1.5px, transparent 1.5px),
    linear-gradient(90deg, rgba(124, 108, 255, 0.34) 1.5px, transparent 1.5px);
  background-size: 90px 90px;
  transform: perspective(520px) rotateX(68deg);
  transform-origin: 50% 100%;
  -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  mask-image: linear-gradient(to top, #000 10%, transparent 85%);
  animation: floor 5s linear infinite;
}
@keyframes floor { to { background-position: 0 90px, 0 0; } }
.vignette { position: absolute; inset: 0; background: radial-gradient(ellipse 90% 80% at 50% 45%, transparent 55%, rgba(7, 6, 26, 0.85)); }

.hero-in { position: relative; }
.hero-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 40px);
  transform: translate(calc(var(--mx, 0) * 8px), calc(var(--my, 0) * 6px));
  transition: transform 0.4s var(--ease-out);
}
.duck-slot { position: relative; background: none; border: 0; padding: 0; cursor: pointer; display: block; }
.hero-duck {
  height: clamp(190px, 26vw, 360px);
  aspect-ratio: 589 / 696;
  flex: none;
  /* the painting's base rests just above the BUG → FIX line, never across it */
  margin-bottom: -14px;
  z-index: 2;
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.5));
  animation: rise 1s var(--ease-spring) 0.15s both;
}
@keyframes rise { from { opacity: 0; transform: translateY(40px) scale(0.92); } }

.eyebrow {
  margin: 0 0 6px;
  font: 600 clamp(12px, 1.3vw, 17px)/1 var(--f-mono);
  letter-spacing: 0.38em;
  color: var(--duck);
  min-height: 1em;
}
.type::after { content: "▍"; margin-left: 2px; animation: caret 1s steps(1) infinite; letter-spacing: 0; }
.type.done::after { opacity: 0; animation: none; }
@keyframes caret { 50% { opacity: 0; } }

.title3d {
  --k: 1;
  position: relative;
  margin: 0;
  font: 700 clamp(64px, 11.5vw, 172px)/0.92 var(--f-title);
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: #eef0ff;
  text-shadow:
    0.006em 0.009em 0 var(--depth), 0.012em 0.018em 0 var(--depth), 0.018em 0.027em 0 var(--depth),
    0.024em 0.036em 0 var(--depth), 0.03em 0.045em 0 var(--depth), 0.036em 0.054em 0 #33288a,
    0.042em 0.063em 0 #2e247d, 0.048em 0.072em 0 #291f70, 0 0 0.3em rgba(124, 108, 255, 0.45),
    0 0.12em 0.35em rgba(0, 0, 0, 0.6);
  animation: title-in 1.1s var(--ease-out) 0.35s both;
}
.title3d::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: transparent;
  text-shadow: none;
  background: linear-gradient(100deg, transparent 38%, rgba(255, 255, 255, 0.95) 48%, rgba(190, 180, 255, 0.7) 52%, transparent 62%);
  background-size: 300% 100%;
  background-position: 120% 0;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shine 6s ease-in-out 1.6s infinite;
  pointer-events: none;
}
@keyframes shine { 0% { background-position: 120% 0; } 35%, 100% { background-position: -30% 0; } }
@keyframes title-in { from { opacity: 0; transform: translateY(30px) rotateX(40deg); filter: blur(8px); } }
.tagline { margin: 14px 0 0; font: 500 clamp(17px, 1.9vw, 26px)/1.3 var(--f-body); color: #dcdaf5; animation: fade-up 0.9s var(--ease-out) 0.7s both; }
@keyframes fade-up { from { opacity: 0; transform: translateY(16px); } }

/* BUG ———— FIX */
.gapline {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  margin: 0 auto;
  max-width: 1100px;
  z-index: 1;
}
.node { position: relative; width: 34px; height: 34px; }
.node i {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 4px solid #0e0b2a;
  animation: node-in 0.6s var(--ease-spring) both;
}
.node.bug i { background: var(--red); box-shadow: 0 0 0 3px var(--red), 0 0 26px 6px rgba(255, 59, 92, 0.55); animation-delay: 0.9s; }
.node.fix i { background: var(--green); box-shadow: 0 0 0 3px var(--green), 0 0 26px 6px rgba(52, 211, 153, 0.5); animation-delay: 2.1s; }
.node b {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%);
  font: 600 18px/1 var(--f-mono);
  letter-spacing: 0.3em;
  padding-left: 0.3em;
  animation: fade-up 0.6s var(--ease-out) both;
}
.node.bug b { color: var(--red); animation-delay: 1s; }
.node.fix b { color: var(--green); animation-delay: 2.2s; }
@keyframes node-in { from { transform: scale(0); } }
.line { position: relative; height: 4px; margin: 0 -2px; }
.line .fill {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--red), #ff8a3d 35%, var(--amber) 55%, #a3d65a 78%, var(--green));
  box-shadow: 0 0 16px rgba(255, 140, 80, 0.45);
  transform-origin: left;
  animation: draw 1.3s cubic-bezier(0.65, 0, 0.35, 1) 1s both;
}
@keyframes draw { from { transform: scaleX(0); } }
.line .pulse {
  position: absolute;
  top: 50%;
  left: 0;
  width: 90px;
  height: 10px;
  margin-top: -5px;
  border-radius: 10px;
  background: radial-gradient(closest-side, #fff, rgba(255, 255, 255, 0));
  opacity: 0;
  animation: travel 3.2s cubic-bezier(0.5, 0, 0.5, 1) 2.6s infinite;
}
@keyframes travel { 0% { left: 0; opacity: 0; } 10% { opacity: 1; } 85% { opacity: 1; } 100% { left: calc(100% - 90px); opacity: 0; } }
.gap-label {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  font: 600 12px/1 var(--f-mono);
  letter-spacing: 0.4em;
  color: var(--muted);
  white-space: nowrap;
  animation: fade-up 0.6s var(--ease-out) 2.3s both;
}
.gap-label::before, .gap-label::after { content: "←"; margin-right: 10px; letter-spacing: 0; }
.gap-label::after { content: "→"; margin: 0 0 0 4px; }

.hero-foot { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 26px; margin-top: 64px; animation: fade-up 0.9s var(--ease-out) 1.3s both; }
.lede { max-width: 640px; margin: 0; color: var(--muted); font-size: 18px; }
.ctas { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

.scroll-cue { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); width: 26px; height: 42px; border: 2px solid rgba(183, 172, 255, 0.35); border-radius: 14px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--lilac); animation: wheel 1.8s ease-in-out infinite; }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(14px); opacity: 0; } 100% { opacity: 0; } }

/* ---------- sections ---------- */
.sec { position: relative; padding: clamp(90px, 12vw, 150px) 0; overflow-x: clip; }
.sec h2 { margin: 0 0 20px; font: 700 clamp(36px, 5.4vw, 66px)/1.02 var(--f-title); letter-spacing: -0.025em; text-wrap: balance; }
.kicker { margin: 0 0 16px; font: 600 13px/1 var(--f-mono); letter-spacing: 0.32em; text-transform: uppercase; color: var(--duck); display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.sec-lede { max-width: 720px; margin: 0; font-size: 19px; color: var(--muted); }

.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out); transition-delay: var(--d, 0s); }
.js [data-reveal].in { opacity: 1; transform: none; }

/* ---------- the gap track ---------- */
.gap { background: linear-gradient(180deg, var(--night), #0b0926 60%, var(--night)); }
.track { position: relative; margin-top: 90px; padding-top: 70px; }
.rail { position: relative; height: 6px; border-radius: 6px; background: rgba(124, 108, 255, 0.16); margin: 0 9px; }
.rail-fill {
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--red), #ff8a3d 40%, var(--amber) 66.6%, var(--green));
  background-size: calc(100% / max(var(--p), 0.001)) 100%;
  width: calc(var(--p) * 100%);
  box-shadow: 0 0 18px rgba(255, 140, 80, 0.4);
}
.stops { list-style: none; margin: 0; padding: 0; position: relative; height: 0; }
.stops li {
  position: absolute;
  top: -21px;
  left: calc(9px + var(--at) * (100% - 18px));
  width: 210px;
  transform: translateX(-50%);
  text-align: center;
}
.stops li:first-child { transform: translateX(-9px); text-align: left; }
.stops li:last-child { transform: translateX(calc(-100% + 9px)); text-align: right; }
.stops i {
  display: block;
  width: 18px;
  height: 18px;
  margin: 0 auto 0;
  border-radius: 50%;
  background: #15113f;
  border: 3px solid rgba(183, 172, 255, 0.35);
  transition: background 0.35s, border-color 0.35s, box-shadow 0.35s, transform 0.35s var(--ease-spring);
}
.stops li:first-child i { margin-left: 0; }
.stops li:last-child i { margin-right: 0; }
.stops li.lit i { transform: scale(1.25); }
.stops li:nth-child(1).lit i { background: var(--red); border-color: #ffd0d8; box-shadow: 0 0 20px var(--red); }
.stops li:nth-child(2).lit i { background: #ff8a3d; border-color: #ffe0c8; box-shadow: 0 0 20px #ff8a3d; }
.stops li:nth-child(3).lit i { background: var(--amber); border-color: #ffeab8; box-shadow: 0 0 20px var(--amber); }
.stops li:nth-child(4).lit i { background: var(--green); border-color: #c9f7e6; box-shadow: 0 0 20px var(--green); }
.stops b { display: block; margin-top: 22px; font: 700 20px/1.2 var(--f-title); opacity: 0.4; transition: opacity 0.4s; }
.stops span { display: block; margin-top: 6px; font-size: 15px; color: var(--muted); opacity: 0.4; transition: opacity 0.4s; }
.stops li.lit b, .stops li.lit span { opacity: 1; }
.brackets { position: absolute; top: 0; left: 9px; right: 9px; height: 50px; }
.bracket {
  position: absolute;
  top: 18px;
  height: 22px;
  border: 2px solid currentColor;
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s, transform 0.6s var(--ease-out);
}
.bracket span { position: absolute; bottom: calc(100% + 10px); left: 50%; transform: translateX(-50%); white-space: nowrap; font: 600 12px/1 var(--f-mono); letter-spacing: 0.22em; }
.bracket.b1 { left: 0; width: calc(66.67% - 6px); color: #ff7a6a; }
.bracket.b2 { left: calc(66.67% + 6px); right: 0; color: var(--green); }
.bracket.on { opacity: 1; transform: none; }

/* ---------- case file 1 ---------- */
.case { background: radial-gradient(ellipse 60% 70% at 25% 50%, rgba(59, 50, 153, 0.35), transparent 70%), var(--night); }
.case-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.case-copy h2 { font-size: clamp(34px, 4.4vw, 56px); }
.case-copy > p { color: var(--muted); font-size: 18px; margin: 0 0 26px; }
.pill { padding: 6px 10px; border-radius: 999px; background: rgba(255, 210, 63, 0.12); border: 1px solid rgba(255, 210, 63, 0.4); font-size: 11px; letter-spacing: 0.2em; }
.pill::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 50%; background: var(--duck); vertical-align: 1px; animation: blink 1.4s ease-in-out infinite; }
@keyframes blink { 50% { opacity: 0.25; } }

.receipt {
  margin: 0 0 28px;
  padding: 18px 22px 14px;
  background: #fffdf6;
  color: #1c1a16;
  border-radius: 10px;
  transform: rotate(-1.2deg);
  box-shadow: 0 22px 50px -18px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(0, 0, 0, 0.05);
}
.receipt blockquote { margin: 0; font: 500 clamp(16px, 1.6vw, 20px)/1.5 var(--f-body); }
.receipt mark { background: linear-gradient(transparent 8%, #ffe9a8 8%, #ffe9a8 92%, transparent 92%); color: inherit; padding: 0 2px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.receipt .ring { position: relative; font-style: normal; white-space: nowrap; }
.receipt .ring::after {
  content: "";
  position: absolute;
  inset: -5px -7px;
  border: 3px solid var(--red);
  border-radius: 10px;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.45s var(--ease-out) 0.5s;
}
.receipt.in .ring::after { clip-path: inset(0 0 0 0); }
.receipt figcaption { margin-top: 10px; font: 400 13px/1 var(--f-mono); color: #6b675c; letter-spacing: 0.04em; }

.chapters { counter-reset: ch; list-style: none; margin: 0 0 30px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 22px; font-size: 15px; }
.chapters li { counter-increment: ch; display: flex; gap: 10px; color: #d4d1f3; }
.chapters li::before { content: counter(ch, decimal-leading-zero); font: 600 12px/1.9 var(--f-mono); color: var(--violet); }
.case-copy .ctas { justify-content: flex-start; }

/* the 3D scene: designed at 920×470, scaled to fit (never above 1) */
.case-visual { position: relative; }
.scene-wrap { position: relative; width: 100%; max-width: 920px; margin: 0 auto; aspect-ratio: 920 / 470; }
.scene {
  position: absolute;
  left: 0;
  top: 0;
  width: 920px;
  height: 470px;
  transform: scale(var(--k, 1));
  transform-origin: 0 0;
  perspective: 1250px;
  perspective-origin: 50% 10%;
}
.headline {
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  text-align: center;
  font: 700 76px/1 var(--f-title);
  letter-spacing: -0.02em;
  z-index: 5;
  opacity: 0;
  transform: scale(1.7);
  pointer-events: none;
}
.headline .w { color: #eef0ff; text-shadow: 2px 3px 0 var(--depth), 4px 6px 0 var(--depth), 6px 9px 0 #2b2180, 0 10px 30px rgba(0, 0, 0, 0.6); }
.headline .r { color: var(--red); text-shadow: 2px 3px 0 #8f1630, 4px 6px 0 #8f1630, 6px 9px 0 #6d0f24, 0 0 34px rgba(255, 59, 92, 0.55); }
.scene.reset, .scene.reset * { transition: none !important; animation: none !important; }
.s-head .headline { opacity: 1; transform: scale(1); transition: transform 0.45s var(--ease-spring), opacity 0.2s; }

.plane {
  position: absolute;
  left: 134px;
  top: 150px;
  width: 680px;
  height: 280px;
  transform-style: preserve-3d;
  transform: rotateX(58deg) rotateZ(-3deg);
}
.slab {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  border-radius: 4px;
  background:
    linear-gradient(rgba(124, 108, 255, 0.2) 2px, transparent 2px) 0 0 / 68px 70px,
    linear-gradient(90deg, rgba(124, 108, 255, 0.2) 2px, transparent 2px) 0 0 / 68px 70px,
    radial-gradient(ellipse 70% 90% at 50% 45%, #3a2f9a, var(--indigo) 60%, #1a1452);
  box-shadow: inset 0 0 0 2px rgba(183, 172, 255, 0.55), inset 0 0 60px rgba(124, 108, 255, 0.35), 0 0 80px rgba(124, 108, 255, 0.25);
  opacity: 0;
  transition: opacity 0.6s;
}
.slab-front { position: absolute; left: 0; right: 0; top: 100%; height: 18px; transform-origin: top; transform: rotateX(-90deg); background: linear-gradient(180deg, var(--lilac) 0, #3b2f95 3px, #1c1658 40%, #0c0a2a); }
.s-on .slab { opacity: 1; }
.pool { position: absolute; width: 220px; height: 170px; border-radius: 50%; opacity: 0; transition: opacity 0.6s; }
.pool-red { background: radial-gradient(closest-side, rgba(255, 59, 92, 0.75), transparent); }
.pool-green { background: radial-gradient(closest-side, rgba(52, 211, 153, 0.6), transparent); }
.s-red .pool-red, .s-green .pool-green { opacity: 1; }
.shock { position: absolute; width: 120px; height: 120px; border-radius: 50%; border: 4px solid var(--red); box-shadow: 0 0 24px var(--red); opacity: 0; }
.s-red .shock { animation: shock 1s var(--ease-out) forwards; }
@keyframes shock { 0% { opacity: 1; transform: scale(0.3); } 100% { opacity: 0; transform: scale(5); } }

.cube {
  --w: 108px;
  --d: 108px;
  --h: 104px;
  --c-top: #5a4fd0;
  --c-band: var(--violet);
  --c-face: #241d6e;
  --c-side: #16114a;
  --c-text: #eef0ff;
  position: absolute;
  width: var(--w);
  height: var(--d);
  transform-style: preserve-3d;
  transform: scaleZ(0.001);
  transition: transform 0.75s var(--ease-spring);
}
.s-on .cube { transform: scaleZ(1); transition-delay: calc(var(--i) * 0.11s + 0.25s); }
.cube .f { position: absolute; transition: background 0.4s; backface-visibility: hidden; }
.cube .top { inset: 0; background: linear-gradient(135deg, color-mix(in srgb, var(--c-top) 100%, #fff 18%), var(--c-top)); transform: translateZ(var(--h)); transform-style: preserve-3d; box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.18); }
.cube .front {
  left: 0;
  top: calc(var(--d) - var(--h));
  width: var(--w);
  height: var(--h);
  transform-origin: 50% 100%;
  transform: rotateX(-90deg);
  background: var(--c-face);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cube .front .mon { width: 100%; padding: 5px 0 4px; text-align: center; background: var(--c-band); color: #120e38; font: 600 12px/1 var(--f-mono); letter-spacing: 0.3em; padding-left: 0.3em; transition: background 0.4s; }
.cube .front .day { flex: 1; display: flex; align-items: center; font: 700 52px/1 var(--f-title); color: var(--c-text); letter-spacing: -0.03em; }
.cube .right { left: calc(var(--w) - var(--h)); top: 0; width: var(--h); height: var(--d); transform-origin: 100% 50%; transform: rotateY(90deg); background: var(--c-side); }
.cube .left { left: 0; top: 0; width: var(--h); height: var(--d); transform-origin: 0 50%; transform: rotateY(-90deg); background: var(--c-side); }
.cube.red { --c-top: #ff5a76; --c-band: #ff9aab; --c-face: #d82a4b; --c-side: #8f1630; }
.cube.green { --c-top: #3fe0a8; --c-band: #a7f3d0; --c-face: #0f9e72; --c-side: #0a6b4e; }
.cube.shake { animation: shake 0.5s linear; }
@keyframes shake {
  0%, 100% { transform: scaleZ(1) translate(0, 0); }
  15% { transform: scaleZ(1) translate(-7px, 3px); }
  30% { transform: scaleZ(1) translate(6px, -4px); }
  45% { transform: scaleZ(1) translate(-5px, -2px); }
  60% { transform: scaleZ(1) translate(4px, 3px); }
  80% { transform: scaleZ(1) translate(-2px, -1px); }
}
.tag {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  transform: rotateX(-90deg);
}
.tag > div {
  position: absolute;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.35s, transform 0.5s var(--ease-spring);
}
.tag .pole { width: 3px; height: 92px; background: #fff; border-radius: 2px; box-shadow: 0 0 10px rgba(255, 255, 255, 0.6); }
.tag .flag { margin-left: 0; padding: 7px 11px; font: 600 14px/1 var(--f-mono); letter-spacing: 0.06em; white-space: nowrap; border-radius: 0 6px 6px 0; color: #04261a; }
.green .tag .flag { background: var(--green); box-shadow: 0 0 24px rgba(52, 211, 153, 0.7); }
.red .tag .flag { background: var(--red); color: #fff; box-shadow: 0 0 24px rgba(255, 59, 92, 0.7); }
.red .tag > div { flex-direction: row-reverse; }
.red .tag > div { left: auto; right: 0; }
.red .tag .flag { border-radius: 6px 0 0 6px; }
.cube.flagged .tag > div { opacity: 1; transform: none; }

.arcwall {
  position: absolute;
  left: 72px;
  top: calc(86px + 54px - 240px);
  width: 536px;
  height: 240px;
  transform-origin: 50% 100%;
  transform: rotateX(-90deg);
  pointer-events: none;
}
.arcwall svg { width: 100%; height: 100%; overflow: visible; }
.arcwall path { fill: none; stroke: var(--red); stroke-width: 5; stroke-linecap: round; filter: drop-shadow(0 0 6px var(--red)); stroke-dasharray: 1; stroke-dashoffset: 1; }
.s-arc .arcwall path { transition: stroke-dashoffset 1s cubic-bezier(0.65, 0, 0.35, 1); stroke-dashoffset: 0; }

.probe { position: absolute; width: 16px; height: 16px; margin: -8px 0 0 -8px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px var(--red), 0 0 30px 8px var(--red); opacity: 0; z-index: 6; left: 0; top: 0; }
.probe.fly { animation: probe 0.6s cubic-bezier(0.55, 0, 0.9, 0.4) forwards; }
@keyframes probe { 0% { opacity: 0; transform: translate(var(--x0), var(--y0)) scale(0.5); } 15% { opacity: 1; } 95% { opacity: 1; } 100% { opacity: 0; transform: translate(var(--x1), var(--y1)) scale(1.3); } }

.replay { position: absolute; right: 6px; bottom: -8px; display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line); background: rgba(18, 14, 56, 0.7); color: var(--muted); font: 600 12px/1 var(--f-mono); letter-spacing: 0.1em; cursor: pointer; transition: color 0.2s, border-color 0.2s; }
.replay:hover { color: var(--text); border-color: var(--lilac); }
.replay svg { width: 14px; height: 14px; fill: currentColor; }

/* ---------- method ---------- */
.method { background: linear-gradient(180deg, var(--night), #0d0a2c 50%, var(--night)); }
.desk { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 64px; }
.slip {
  position: relative;
  padding: 26px 22px 24px;
  border-radius: 8px;
  background: var(--paper);
  color: var(--paper-ink);
  transform: rotate(var(--r));
  box-shadow: 0 24px 50px -20px rgba(0, 0, 0, 0.85);
  transition: transform 0.7s var(--ease-out), opacity 0.5s;
  transition-delay: calc(var(--n) * 0.12s);
}
.slip::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: repeating-linear-gradient(0deg, transparent 0 27px, rgba(43, 36, 24, 0.07) 27px 28px); pointer-events: none; }
.js .desk:not(.in) .slip { transform: rotate(var(--r)) translateY(40px); opacity: 0; }
.slip p { margin: 0; font-size: 15px; line-height: 1.55; }
.slip p b { font-family: var(--f-title); }
.stamp { height: 92px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.stamp svg { height: 84px; width: auto; max-width: 100%; opacity: 0; transform: scale(2.2) rotate(var(--sr, -8deg)); mix-blend-mode: multiply; }
.slip.thud .stamp svg { animation: thud 0.32s cubic-bezier(0.5, 0, 0.75, 0) forwards; }
.slip.thud { animation: knock 0.35s ease-out 0.28s; }
@keyframes thud { 0% { opacity: 0; transform: scale(2.2) rotate(var(--sr)); } 60% { opacity: 1; } 100% { opacity: 1; transform: scale(1) rotate(var(--sr)); } }
@keyframes knock { 0%, 100% { translate: 0 0; } 30% { translate: 0 4px; } 60% { translate: 0 -1px; } }

.rules { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 56px; }
.rule { padding: 22px; border-radius: 14px; background: linear-gradient(180deg, rgba(35, 28, 102, 0.55), rgba(18, 14, 56, 0.5)); border: 1px solid var(--line); }
.rule svg { width: 26px; height: 26px; fill: var(--cyan); margin-bottom: 14px; }
.rule b { display: block; font: 700 18px/1.25 var(--f-title); margin-bottom: 6px; }
.rule span { color: var(--muted); font-size: 15px; line-height: 1.5; }
.never { margin: 64px 0 0; text-align: center; font: 700 clamp(24px, 3.4vw, 40px)/1.2 var(--f-title); letter-spacing: -0.02em; }
.never span { color: var(--duck); }

/* ---------- season board ---------- */
.season { background: radial-gradient(ellipse 70% 60% at 50% 60%, rgba(59, 50, 153, 0.3), transparent 70%), var(--night); }
.board { display: grid; grid-template-columns: repeat(5, 1fr); gap: 34px 22px; margin-top: 64px; perspective: 1200px; }
.folder {
  position: relative;
  display: block;
  padding-top: 22px;
  color: inherit;
  text-decoration: none;
  transition: transform 0.8s var(--ease-out), opacity 0.6s;
  transition-delay: calc(var(--i) * 0.06s);
  cursor: default;
}
.js .board:not(.in) .folder { opacity: 0; transform: translateY(40px) rotateX(25deg); }
.folder.open { cursor: pointer; }
.folder .tab {
  position: absolute;
  top: 0;
  left: 14px;
  height: 26px;
  padding: 6px 14px 0;
  border-radius: 8px 8px 0 0;
  background: #c99a2e;
  font: 600 13px/1 var(--f-mono);
  color: #3a2a06;
  letter-spacing: 0.1em;
}
.folder .sheet {
  position: relative;
  aspect-ratio: 4 / 4.6;
  padding: 18px 16px 16px;
  border-radius: 4px 10px 10px 10px;
  background: linear-gradient(160deg, #f6cd64, var(--manila) 45%, #d9a838);
  color: #3a2a06;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4) inset, 0 20px 40px -18px rgba(0, 0, 0, 0.9);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s;
}
.folder:hover .sheet { transform: translateY(-8px) rotate(-1.2deg); box-shadow: 0 1px 0 rgba(255, 255, 255, 0.4) inset, 0 30px 50px -18px rgba(0, 0, 0, 0.95), 0 0 0 2px rgba(255, 210, 63, 0.5); }
.folder .kind { align-self: flex-start; padding: 4px 8px; border-radius: 6px; background: rgba(58, 42, 6, 0.12); font: 600 10.5px/1.2 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; }
.folder h3 { margin: 4px 0 0; font: 700 22px/1.1 var(--f-title); letter-spacing: -0.01em; }
.folder p { margin: 0; font-size: 13.5px; line-height: 1.45; }
.redact { display: block; height: 14px; border-radius: 2px; background: #141019; margin-top: 4px; }
.redact.w50 { width: 50%; } .redact.w60 { width: 60%; } .redact.w70 { width: 70%; } .redact.w80 { width: 80%; } .redact.w90 { width: 90%; }
.folder .status {
  margin-top: auto;
  align-self: flex-start;
  padding: 5px 9px 4px;
  border: 2.5px solid #8f1630;
  border-radius: 5px;
  font: 700 13px/1 var(--f-title);
  letter-spacing: 0.18em;
  color: #8f1630;
  transform: rotate(-6deg);
  mix-blend-mode: multiply;
}
.folder.open .status { border-color: #12833f; color: #12833f; }
.folder.open .sheet { background: linear-gradient(160deg, #fff3c8, #ffe28a 50%, #f6c94f); box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 20px 40px -18px rgba(0, 0, 0, 0.9), 0 0 40px -6px rgba(255, 210, 63, 0.55); }
.folder.open .tab { background: var(--duck); }
.folder.nope .sheet { animation: nope 0.4s; }
@keyframes nope { 20% { transform: translateX(-6px) rotate(-1deg); } 40% { transform: translateX(5px); } 60% { transform: translateX(-3px); } 80% { transform: translateX(2px); } }

/* ---------- duck ---------- */
.duck { background: linear-gradient(180deg, var(--night), #0e0b30 55%, var(--night)); overflow: hidden; }
.duck-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 80px); align-items: center; }
.duck-copy > p { color: var(--muted); font-size: 18px; margin: 0 0 30px; max-width: 520px; }
.poses { display: flex; flex-wrap: wrap; gap: 10px; }
.poses button {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(35, 28, 102, 0.4);
  color: var(--muted);
  font: 600 13px/1 var(--f-mono);
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}
.poses button:hover { color: var(--text); border-color: var(--lilac); transform: translateY(-2px); }
.poses button[aria-selected="true"] { background: var(--duck); color: #17120a; border-color: var(--duck); box-shadow: 0 8px 24px -8px rgba(255, 210, 63, 0.7); }
.duck-stage { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; min-height: 520px; }
.duck-stage .spot { position: absolute; left: 50%; bottom: 40px; width: 380px; height: 90px; transform: translateX(-50%); border-radius: 50%; background: radial-gradient(closest-side, rgba(124, 108, 255, 0.55), transparent); filter: blur(4px); }
.duck-stage::before { content: ""; position: absolute; left: 50%; top: -60px; bottom: 60px; width: 420px; transform: translateX(-50%); background: radial-gradient(ellipse 50% 100% at 50% 0%, rgba(160, 140, 255, 0.22), transparent 80%); pointer-events: none; }
.pose-duck { height: 380px; aspect-ratio: 608 / 687; margin-bottom: 64px; cursor: pointer; filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.5)); }
.pose-duck.pop { animation: pop 0.5s var(--ease-spring); }
@keyframes pop { from { transform: translateY(24px) scale(0.9); opacity: 0.2; } }
.bubble {
  position: absolute;
  top: 10px;
  right: 2%;
  z-index: 3;
  max-width: 260px;
  padding: 14px 18px;
  border-radius: 16px 16px 16px 4px;
  background: #fff;
  color: #120e38;
  font: 600 16px/1.35 var(--f-mono);
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.7);
}
.bubble span::after { content: "▍"; animation: caret 1s steps(1) infinite; color: var(--violet); }
.badge-strip { position: absolute; bottom: 0; display: flex; align-items: center; gap: 12px; padding: 9px 16px; border-radius: 8px; background: #0b0920; border: 1px solid var(--line); font: 600 12px/1 var(--f-mono); letter-spacing: 0.24em; color: var(--muted); }
.badge-strip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); animation: blink 1.6s infinite; }

/* the rig: painted plate with moving eyes and beak */
.rig { position: absolute; left: 0; top: 0; transform-origin: 0 0; pointer-events: none; }
.rig .breathe { position: absolute; inset: 0; transform-origin: 50% 100%; }
.rig img, .rig .part { position: absolute; }
.rig img { width: 100%; height: 100%; user-select: none; -webkit-user-drag: none; }

/* ---------- CTA ---------- */
.cta { text-align: center; overflow: hidden; padding-bottom: clamp(140px, 16vw, 200px); background: radial-gradient(ellipse 60% 70% at 50% 100%, rgba(124, 108, 255, 0.35), transparent 70%), var(--night); }
.cta::before { content: ""; position: absolute; left: -40%; right: -40%; bottom: 0; height: 45%; background-image: linear-gradient(rgba(124, 108, 255, 0.28) 1.5px, transparent 1.5px), linear-gradient(90deg, rgba(124, 108, 255, 0.28) 1.5px, transparent 1.5px); background-size: 80px 80px; transform: perspective(500px) rotateX(65deg); transform-origin: 50% 100%; -webkit-mask-image: linear-gradient(to top, #000, transparent); mask-image: linear-gradient(to top, #000, transparent); }
.cta-in { position: relative; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.title3d.small { font-size: clamp(48px, 9vw, 128px); animation: none; }
.cta-in p { margin: 0; max-width: 560px; color: var(--muted); font-size: 19px; }
.peek { position: absolute; right: clamp(-40px, -2vw, 0px); bottom: -70px; width: clamp(150px, 18vw, 240px); transform: scaleX(-1) translateY(30%) rotate(-6deg); transition: transform 0.8s var(--ease-spring); }
.peek.in { transform: scaleX(-1) translateY(0) rotate(-6deg); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); background: #05041a; }
.foot-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot p { margin: 0; font-size: 14px; color: var(--muted); }
.foot a { color: var(--text); text-decoration: none; }
.foot a:hover { color: var(--duck); }
.utc { letter-spacing: 0.12em; color: var(--cyan) !important; }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .nav-links { display: none; }
  .case-grid, .duck-grid { grid-template-columns: 1fr; }
  .desk, .rules { grid-template-columns: repeat(2, 1fr); }
  .board { grid-template-columns: repeat(3, 1fr); }
  .duck-stage { min-height: 480px; }
}
@media (max-width: 720px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .hero { padding-top: 90px; }
  .hero-row { flex-direction: column; gap: 4px; text-align: center; }
  .hero-duck { height: 200px; margin-bottom: 0; }
  .title3d { font-size: clamp(52px, 17vw, 96px); }
  .gapline { margin-top: 56px; }
  .node { width: 26px; height: 26px; }
  .node b { font-size: 14px; }
  .gap-label { font-size: 10px; letter-spacing: 0.25em; }
  .hero-foot { margin-top: 56px; }
  .lede { font-size: 16px; }
  .ctas { flex-direction: column; align-items: stretch; width: 100%; }
  .ctas .btn { justify-content: center; }
  .case-copy .ctas { align-items: stretch; }
  .sec-lede { font-size: 17px; }
  /* the track turns vertical on phones */
  .track { margin-top: 56px; padding-top: 0; }
  .brackets { display: none; }
  .rail { position: absolute; left: 6px; top: 12px; bottom: 40px; width: 6px; height: auto; margin: 0; }
  .rail-fill { width: 100%; height: calc(var(--p) * 100%); background: linear-gradient(180deg, var(--red), #ff8a3d 40%, var(--amber) 66.6%, var(--green)); background-size: 100% calc(100% / max(var(--p), 0.001)); }
  .stops { height: auto; display: flex; flex-direction: column; gap: 30px; padding-left: 42px; }
  .stops li, .stops li:first-child, .stops li:last-child { position: relative; top: auto; left: auto; width: auto; transform: none; text-align: left; }
  .stops i, .stops li:first-child i, .stops li:last-child i { position: absolute; left: -42px; top: 3px; margin: 0; }
  .stops b { margin-top: 0; font-size: 19px; }
  .stops li:nth-child(1)::after, .stops li:nth-child(3)::after { display: block; margin-top: 18px; font: 600 11px/1 var(--f-mono); letter-spacing: 0.2em; opacity: 0.35; transition: opacity 0.4s; }
  .stops li:nth-child(1)::after { content: "↓ THE GAP BEFORE THE FIX"; color: #ff7a6a; }
  .stops li:nth-child(3)::after { content: "↓ THE GAP AFTER IT"; color: var(--green); }
  .stops li.lit::after { opacity: 1; }
  .chapters { grid-template-columns: 1fr; }
  .desk, .rules { grid-template-columns: 1fr; }
  .board { grid-template-columns: repeat(2, 1fr); gap: 28px 14px; }
  .folder .sheet { padding: 14px 12px; }
  .folder h3 { font-size: 19px; }
  .duck-stage { min-height: 420px; }
  .pose-duck { height: 280px; }
  .bubble { right: 0; top: 0; font-size: 14px; max-width: 200px; }
  .foot-in { flex-direction: column; align-items: flex-start; }
  .cta { padding-bottom: 200px; }
  .peek { width: 130px; right: 12px; bottom: -36px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; transition-delay: 0s !important; }
  html { scroll-behavior: auto; }
  .line .pulse { display: none; }
}