:root {
  --hall: #151a3b;
  --hall-deep: #0e1230;
  --screen: #f3f5fc;
  --stage: #ffb547;
  --stage-ink: #2a1a00;
  --mist: #9aa3c7;
  --line: rgba(243, 245, 252, 0.14);
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --measure: 62ch;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--hall);
  color: var(--screen);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, video { max-width: 100%; display: block; }
a { color: var(--stage); text-underline-offset: 3px; }
a:hover { color: #ffd08a; }
:focus-visible { outline: 3px solid var(--stage); outline-offset: 3px; border-radius: 4px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--stage); color: var(--stage-ink); padding: 8px 14px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 16px; }

h1, h2, h3 { font-family: var(--display); line-height: 1.08; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 4.4vw, 3.7rem); font-weight: 800; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.7rem); font-weight: 700; margin-bottom: 1.6rem; }
h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.45rem; }
p { margin: 0 0 1rem; max-width: var(--measure); }
.fine { font-size: 0.92rem; color: var(--mist); }

section { padding: clamp(4rem, 9vw, 7.5rem) clamp(1rem, 5vw, 4rem); max-width: 1240px; margin: 0 auto; }

/* nav */
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem clamp(1rem, 5vw, 4rem); max-width: 1240px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--screen); text-decoration: none; font: 800 1.35rem var(--display); }
.nav nav { display: flex; align-items: center; gap: clamp(0.8rem, 2.5vw, 1.8rem); }
.nav nav a { color: var(--mist); text-decoration: none; font-size: 0.98rem; }
.nav nav a:hover { color: var(--screen); }
.nav nav .nav-cta { color: var(--stage); font-weight: 700; }
@media (max-width: 640px) { .nav nav a:not(.nav-cta) { display: none; } }

/* buttons */
.btn-primary {
  display: inline-block; background: var(--stage); color: var(--stage-ink);
  font: 700 1.08rem var(--body); text-decoration: none; padding: 0.95rem 1.5rem; border-radius: 10px;
  box-shadow: 0 8px 30px rgba(255, 181, 71, 0.28);
}
.btn-primary:hover { background: #ffc46b; color: var(--stage-ink); }
.btn-primary.big { font-size: 1.2rem; padding: 1.1rem 1.8rem; }
.btn-quiet { color: var(--screen); text-decoration: none; padding: 0.95rem 0.4rem; font-weight: 700; }
.btn-quiet:hover { color: var(--stage); }

/* hero: darkened hall + projector */
.hero {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center; padding-top: clamp(2.5rem, 6vw, 5rem); padding-bottom: clamp(3rem, 7vw, 6rem);
}
.hero-text h1 { margin-bottom: 1.4rem; }
.lede { font-size: 1.2rem; color: #d6dbf0; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem 1.2rem; margin-bottom: 1.2rem; }

.projector { position: relative; margin: 0; }
.hero { overflow-x: clip; overflow-y: visible; }
.beam {
  position: absolute; inset: -18% -10% -6%; z-index: 0; pointer-events: none;
  background: radial-gradient(60% 55% at 50% 45%, rgba(190, 205, 255, 0.20), rgba(190, 205, 255, 0.05) 55%, transparent 75%);
  filter: blur(6px);
}
.screen {
  position: relative; z-index: 1; aspect-ratio: 16 / 9; background: #05071a; border-radius: 6px; overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 30px 80px rgba(2, 4, 20, 0.7), 0 0 120px rgba(170, 190, 255, 0.18);
}
.screen video { width: 100%; height: 100%; object-fit: cover; background: #05071a; }
.projector figcaption { position: relative; z-index: 1; margin-top: 0.9rem; color: var(--mist); font-size: 0.92rem; text-align: center; }

/* the one orchestrated moment: the screen "warms up" like a projector */
@media (prefers-reduced-motion: no-preference) {
  .screen { animation: projector-on 1.4s ease-out 0.2s both; }
  .beam { animation: beam-on 1.8s ease-out 0.2s both; }
}
@keyframes projector-on { 0% { opacity: 0; filter: brightness(2.2) saturate(0); } 35% { opacity: 1; } 100% { opacity: 1; filter: none; } }
@keyframes beam-on { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
}

/* how it works: a film strip, because it is a real sequence */
.how h2 { max-width: 20ch; }
.filmstrip {
  list-style: none; margin: 0; padding: 22px 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  background: var(--hall-deep); border-radius: 8px; position: relative;
}
.filmstrip::before, .filmstrip::after {
  content: ""; position: absolute; left: 12px; right: 12px; height: 10px;
  background: repeating-linear-gradient(90deg, rgba(243, 245, 252, 0.16) 0 14px, transparent 14px 30px);
  border-radius: 2px;
}
.filmstrip::before { top: 6px; }
.filmstrip::after { bottom: 6px; }
.filmstrip li { padding: 1.4rem 1.2rem; border-left: 1px solid var(--line); }
.filmstrip li:first-child { border-left: 0; }
.frame-no { display: block; font: 800 2.4rem/1 var(--display); color: var(--stage); margin-bottom: 0.7rem; }
.filmstrip p { font-size: 0.98rem; color: #cfd5ee; margin: 0; }
@media (max-width: 960px) {
  .filmstrip { grid-template-columns: 1fr; padding: 22px 0; }
  .filmstrip li { border-left: 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 3rem 1fr; column-gap: 0.6rem; }
  .filmstrip li:first-child { border-top: 0; }
  .frame-no { grid-row: span 2; font-size: 2rem; }
}

/* features: screenshots as tilted polaroids (the app's own frame style) */
.feature {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center; margin-bottom: clamp(3.5rem, 7vw, 6rem);
}
.feature.flip { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); }
.feature.flip .polaroid { order: 2; }
.polaroid {
  margin: 0; background: #fbfbf7; padding: 12px 12px 0; border-radius: 3px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25), 0 24px 50px rgba(2, 4, 20, 0.55);
}
.polaroid img { width: 100%; height: auto; aspect-ratio: 1600 / 950; object-fit: cover; background: #dde1ee; }
.polaroid figcaption { color: #3a3f55; font: 500 1rem var(--display); text-align: center; padding: 0.7rem 0 0.85rem; }
.tilt-l { transform: rotate(-1.6deg); }
.tilt-r { transform: rotate(1.4deg); }
.tilt-s { transform: rotate(-0.8deg); }
.feature-text p { color: #d6dbf0; }
@media (max-width: 900px) {
  .feature { grid-template-columns: 1fr; }
  .feature.flip { grid-template-columns: 1fr; }
  .feature.flip .polaroid { order: 0; }
}

.also {
  list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem 3rem;
  border-top: 1px solid var(--line); padding-top: 2.5rem;
}
.also li { color: #cfd5ee; max-width: 52ch; }
.also strong { color: var(--screen); }
@media (max-width: 760px) { .also { grid-template-columns: 1fr; } }

/* story */
.story { text-align: left; }
.story p { font-size: 1.22rem; color: #d6dbf0; max-width: 58ch; }

/* download */
.download-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 2.5rem; align-items: start; }
.download-main .btn-primary { margin-bottom: 1.2rem; }
.warning-help { background: var(--hall-deep); border-radius: 10px; padding: 1.5rem 1.6rem; border: 1px solid var(--line); }
.warning-help ol { margin: 0; padding-left: 1.2rem; color: #cfd5ee; }
.warning-help li { margin-bottom: 0.6rem; }
@media (max-width: 860px) { .download-grid { grid-template-columns: 1fr; } }

/* faq */
.faq details { border-top: 1px solid var(--line); padding: 1.1rem 0; max-width: 780px; }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font: 700 1.15rem var(--display); list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--stage); font-size: 1.5rem; line-height: 1; transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0.8rem 0 0; color: #cfd5ee; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 2.5rem clamp(1rem, 5vw, 4rem) 3rem; max-width: 1240px; margin: 0 auto; }
.foot p { max-width: none; }

/* guide page */
.guide-intro {
  display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 4rem);
  align-items: start; padding-top: clamp(2.5rem, 6vw, 4.5rem); padding-bottom: clamp(2rem, 5vw, 4rem); overflow-x: clip;
}
.guide-intro h1 { margin-bottom: 1.2rem; }
.toc { margin: 0; padding: 0; list-style: none; counter-reset: toc; columns: 2; column-gap: 1.5rem; }
.toc li { counter-increment: toc; break-inside: avoid; padding: 0.3rem 0; }
.toc li::before { content: counter(toc); display: inline-block; width: 1.8rem; font: 800 1rem var(--display); color: var(--stage); }
.toc a { color: var(--screen); text-decoration: none; }
.toc a:hover { color: var(--stage); text-decoration: underline; }
@media (max-width: 900px) { .guide-intro { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .toc { columns: 1; } }

.guide { padding-top: clamp(1rem, 3vw, 2rem); }
.step {
  display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start; padding: clamp(2.5rem, 5vw, 4rem) 0; border-top: 1px solid var(--line); scroll-margin-top: 1rem;
}
.step:first-child { border-top: 0; }
.step h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: 1rem; }
.step-text p, .step-text li { color: #d6dbf0; }
.step-text .frame-no { margin-bottom: 0.6rem; }
.step-text strong { color: var(--screen); }
.areas { padding-left: 1.1rem; margin: 0 0 1rem; }
.areas li { margin-bottom: 0.45rem; }
.tip { background: var(--hall-deep); border-left: 3px solid var(--stage); padding: 0.8rem 1rem; border-radius: 0 8px 8px 0; font-size: 0.98rem; }
kbd { font: 700 0.85rem var(--body); background: #262c55; border: 1px solid #3a4275; border-bottom-width: 2px; border-radius: 5px; padding: 0.05rem 0.4rem; color: var(--screen); }
code { font-size: 0.92em; background: #262c55; border-radius: 4px; padding: 0.05rem 0.35rem; }
.shot { margin: 0; background: #0b0e26; border-radius: 8px; padding: 6px; box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 20px 50px rgba(2,4,20,0.55); }
.shot img { border-radius: 4px; width: 100%; height: auto; }
.folder-tree, .callout { background: var(--hall-deep); border: 1px solid var(--line); border-radius: 10px; padding: 1.4rem 1.6rem; align-self: center; }
.folder-tree { font-size: 1.05rem; }
.tree-root { font-weight: 700; margin-bottom: 0.4rem; }
.folder-tree ul { list-style: none; margin: 0 0 0 0.9rem; padding: 0 0 0 1rem; border-left: 1px dashed rgba(243,245,252,0.25); }
.folder-tree li { padding: 0.3rem 0; }
.folder-tree li span { color: var(--mist); font-size: 0.92rem; }
.tree-note { margin: 0.9rem 0 0; font-size: 0.92rem; color: var(--mist); }
.callout p { margin: 0; color: #d6dbf0; }
@media (max-width: 900px) { .step { grid-template-columns: 1fr; } }
.guide-end { text-align: left; padding-top: clamp(2rem, 5vw, 3rem); }
.guide-end p { color: #d6dbf0; margin-bottom: 1.6rem; }
.nav nav a[aria-current="page"] { color: var(--screen); }