/* Cutloom — cutloom.ai
   Palette fuses format connotations:
   MD manuscript amber · PPT orange · PDF rose · Video violet · Canvas teal */
:root {
  --bg: #f3efe8;
  --bg-deep: #141210;
  --ink: #1c1917;
  --ink-soft: #57534e;
  --ink-mute: #6b665e; /* ≥4.5:1 on --bg for small meta/hint text */
  --signal: #c2410c;       /* MD / loomd — warm manuscript */
  --signal-2: #9f1239;     /* PDF-leaning cut accent */
  --signal-hover: #9a3412;
  --c-md: #c2410c;
  --c-slides: #ea580c;     /* PPT */
  --c-slides-lit: #fb923c;
  --c-pdf: #e11d48;        /* PDF */
  --c-pdf-lit: #fb7185;
  --c-video: #7c3aed;      /* Video */
  --c-video-lit: #a78bfa;
  --c-canvas: #0f766e;     /* Canvas / HTML */
  --c-canvas-lit: #2dd4bf;
  --line: rgba(28, 25, 23, 0.1);
  --line-strong: rgba(28, 25, 23, 0.18);
  --shell: 72rem;
  --gutter: clamp(1.25rem, 3vw, 2.25rem);
  /* Latin self-hosted; CJK via system fonts (no multi‑MB webfont) */
  --font-display: "Syne", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "DM Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --skew: -8deg;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 2px;
}

/* ——— self-hosted latin faces (see site/fonts + scripts/fetch_fonts.py) ——— */
@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/syne-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/syne-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../fonts/syne-latin-800-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/dm-sans-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/dm-sans-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/dm-sans-latin-600-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/dm-sans-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

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

html {
  /* auto on load — smooth + scrollRestoration causes refresh jump */
  scroll-behavior: auto;
  scroll-padding-top: 4.5rem; /* sticky header clearance for #anchors */
}

html.is-smooth-scroll {
  scroll-behavior: smooth;
}

/* hide hero until GSAP owns opacity — kills refresh FOUC flash.
   Doc pages never run main.js / is-booted — keep logo word visible there. */
@media (prefers-reduced-motion: no-preference) {
  html.js body:not(.is-booted) .hero__copy > *,
  html.js body:not(.is-booted) .hero__stage,
  html.js body:not(.is-booted) .stage__hint,
  html.js body:not(.is-booted):not(.doc-page) .logo__word {
    opacity: 0;
  }
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.55;
  background:
    radial-gradient(42% 36% at 78% 10%, rgba(234, 88, 12, 0.09), transparent 58%),
    radial-gradient(36% 32% at 92% 42%, rgba(225, 29, 72, 0.06), transparent 55%),
    radial-gradient(40% 34% at 70% 78%, rgba(124, 58, 237, 0.06), transparent 55%),
    radial-gradient(34% 30% at 12% 72%, rgba(15, 118, 110, 0.05), transparent 55%),
    var(--bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

.shell {
  width: min(100% - var(--gutter) * 2, var(--shell));
  margin-inline: auto;
}

.noscript {
  margin: 0;
  padding: 0.75rem var(--gutter);
  background: var(--bg-deep);
  color: #f2f1ee;
  font-size: 0.9rem;
  text-align: center;
}
.noscript a {
  color: #fdba74;
  text-decoration: underline;
}

.skip {
  position: absolute;
  left: -999px;
}
.skip:focus,
.skip:focus-visible {
  left: var(--gutter);
  top: 1rem;
  z-index: 50;
  background: #fff;
  padding: 0.5rem 0.75rem;
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* Keyboard focus — mouse clicks stay quiet via :focus-visible */
:focus {
  outline: none;
}
:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}
.btn:focus-visible,
.lang__btn:focus-visible {
  outline-offset: 3px;
}

/* ——— top ——— */
.top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg);
  border-bottom: 1px solid transparent;
}

.top.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(28, 25, 23, 0.04);
}

.top__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  min-height: 4rem;
}

/* Brand lockup — mark + product name "cutloom".
   Domain cutloom.ai stays in title / crumb / title-attr — never as a colored ".ai" suffix.
   Ecosystem kinship: Trunk.IM keeps accent on ".IM" only. */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.logo__mark {
  width: 1.55rem;
  height: 1.55rem;
  flex: 0 0 auto;
  overflow: visible;
}

/* two lobes of one disc — the cut is the brand */
.logo__lobe {
  stroke: none;
}
.logo__lobe--a { fill: var(--ink); }
.logo__lobe--b { fill: var(--ink); }

.logo__knob {
  fill: var(--signal);
  stroke: var(--bg);
  stroke-width: 1.5;
}

.logo__word {
  display: inline-block;
  color: var(--ink);
}

.logo:hover .logo__lobe--b {
  fill: #3f3a36;
}

/* Parent-ecosystem TLD accent (Trunk.IM) — do not reuse on cutloom */
.brand-tld {
  color: var(--signal);
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 2.5vw, 1.75rem);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
}

.nav a {
  position: relative;
  padding: 0.25rem 0;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.nav a:hover::after { transform: scaleX(1); }

.top__end {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.lang__btn {
  appearance: none;
  border: 0;
  margin: 0;
  padding: 0.3rem 0.55rem;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
}

.lang__btn.is-active {
  background: var(--ink);
  color: #fff;
}

/* ——— buttons ——— */
.btn {
  --pad-x: 1.4rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 2.6rem;
  padding: 0.35rem var(--pad-x);
  border: 0;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transform: skewX(var(--skew));
  overflow: hidden;
  cursor: pointer;
  line-height: 1.35;
}

.btn-text {
  position: relative;
  display: flex;
  align-items: center;
  /* single-line clip box — char flip y±100% must leave this band */
  height: 1.35em;
  overflow: hidden;
  transform: skewX(calc(var(--skew) * -1));
  white-space: nowrap;
}

.btn-text--clone {
  position: absolute;
  left: var(--pad-x);
  top: 50%;
  height: 1.35em;
  margin: 0;
  overflow: hidden;
  pointer-events: none;
  /* counter-skew + vertical center — do not let GSAP overwrite this */
  transform: skewX(calc(var(--skew) * -1)) translateY(-50%);
}

.btn-text .char {
  display: inline-block;
  position: relative;
  will-change: transform;
}

.btn-text .char--space {
  width: 0.35em;
  flex: 0 0 0.35em;
}

.btn--signal { background: var(--signal); color: #fff; }
.btn--signal:hover { background: var(--signal-hover); }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: #1c1d26; }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1.5px var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: #fff;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__copy .cta-row {
  /* room for skewX so buttons aren't clipped by neighbors */
  padding: 0.2rem 0.55rem 0.45rem 0.5rem;
  margin: 0 -0.35rem;
}

/* ——— hero ——— */
.hero {
  /* keep hint clearance, but don’t invent a tall empty band */
  padding: clamp(1.5rem, 3.5vh, 2.75rem) 0 clamp(2rem, 4.5vh, 3.25rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: clamp(1.5rem, 2.5vw, 2rem);
  /* do NOT force full viewport — that leaves a dead band under the composition */
  min-height: 0;
}

@media (min-width: 980px) {
  .hero__grid {
    /* same shell width as #outputs / header — left edges align */
    grid-template-columns: minmax(18rem, 28rem) minmax(0, 1fr);
    column-gap: clamp(1.5rem, 3vw, 2.75rem);
    align-items: center;
  }
}

.hero__copy {
  position: relative;
  z-index: 2;
  max-width: 28rem;
  min-width: 0;
  overflow: visible;
  padding-right: 0.25rem;
  padding-bottom: 0.25rem;
}

.eyebrow {
  margin: 0 0 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}

.hero__title { margin: 0 0 1.35rem; }

.brand-line {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.85rem, 5.6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  /* Syne's bold m needs sidebearing — never overflow:hidden here */
  padding-right: 0.14em;
  overflow: visible;
}

.headline {
  display: block;
  margin-top: 0.85rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.6vw, 2.05rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
  max-width: 16em;
  color: var(--ink);
}

.hero__lede {
  margin: 0 0 1.85rem;
  max-width: 30rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.65;
}

.triad {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}

.triad__chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem 0.45rem 0.45rem;
  color: var(--ink);
  background: rgba(194, 65, 12, 0.06);
  border: 1px solid rgba(194, 65, 12, 0.18);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.35s var(--ease), color 0.25s ease;
}

.triad__chip:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
  transform: translateY(-2px) skewX(-4deg);
}

.triad__icon {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  color: var(--signal);
  background: #fff;
  transition: color 0.25s ease, background 0.25s ease;
}

.triad__chip:hover .triad__icon {
  color: var(--signal);
  background: #fff;
}

.triad__icon svg {
  width: 1.05rem;
  height: 1.05rem;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.55rem;
  margin: 1.35rem 0 0;
  max-width: 28rem; /* stay in the copy column — never span the shell */
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.file-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.12em 0.45em;
  font-family: var(--font-mono);
  font-size: 0.86em;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.35;
  color: var(--c-md);
  background: rgba(194, 65, 12, 0.1);
  border: 1px solid rgba(194, 65, 12, 0.28);
  border-radius: var(--radius);
  text-transform: none;
  vertical-align: 0.05em;
  white-space: nowrap;
}

.band__head .file-badge {
  font-size: 0.78em;
  vertical-align: 0.12em;
}


.hero__stage {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 38rem;
  margin-inline: 0;
  aspect-ratio: 540 / 360;
  /* allow vertical page scroll on touch; desktop can capture for cut-drag */
  touch-action: pan-y;
  user-select: none;
  isolation: isolate;
}

@media (hover: hover) and (pointer: fine) {
  .hero__stage { touch-action: none; }
}

@media (min-width: 980px) {
  .hero__stage {
    justify-self: end; /* pin to shell’s right edge — matches #outputs rails */
    width: min(100%, 38rem);
  }
}

.hero__meta-brand {
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.hero__meta-brand:hover {
  border-bottom-color: rgba(28, 25, 23, 0.35);
}
.hero__meta-brand .brand-tld {
  color: var(--signal);
}

.loom {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  font-family: var(--font-mono);
}

.loom__grid line {
  stroke: rgba(18, 19, 26, 0.08);
  stroke-width: 1;
}

.loom__card {
  fill: #fff;
  stroke: var(--ink);
  stroke-width: 1.5;
  filter: drop-shadow(6px 10px 0 rgba(28, 25, 23, 0.06));
}

.loom__label {
  fill: var(--c-md);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.loom__label--mute {
  fill: var(--ink-mute);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.loom__skeleton rect {
  fill: rgba(18, 19, 26, 0.14);
}

.loom__scan {
  fill: rgba(194, 65, 12, 0.1);
  pointer-events: none;
}

.loom__compile-hit {
  cursor: pointer;
  outline: none;
}

.loom__compile-hit:focus-visible .loom__compile-bg {
  stroke: var(--ink);
  stroke-width: 2.5;
  paint-order: stroke fill;
}

.loom__compile-bg {
  fill: var(--signal);
  transition: fill 0.25s ease;
}

.loom__compile-fill {
  fill: var(--signal-hover);
  pointer-events: none;
}

.loom__compile-hit:hover .loom__compile-bg,
.loom__compile-hit.is-hot .loom__compile-bg,
.loom__compile-hit.is-compiling .loom__compile-bg {
  fill: #9a3412;
}

.loom__compile-hit text {
  fill: #fff;
  font-size: 10px;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.loom__cut {
  cursor: ew-resize;
}

.loom__cut-beam {
  stroke: var(--signal);
  stroke-width: 2;
  stroke-dasharray: 4 3;
}

.loom__cut-ticks line {
  stroke: var(--signal);
  stroke-width: 1.5;
  opacity: 0.7;
}

.loom__warp path {
  fill: none;
  stroke-width: 1.25;
}

.loom__cut-knob {
  fill: #fff;
  stroke: var(--ink);
  stroke-width: 2;
}

.loom__cut-tag {
  fill: var(--ink-mute);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.loom__rail {
  cursor: pointer;
  opacity: 1;
  transition: opacity 0.25s ease;
}

.loom__rail-track {
  fill: rgba(255, 255, 255, 0.55);
  stroke: rgba(28, 25, 23, 0.2);
  stroke-width: 1.25;
  stroke-dasharray: 5 4;
  transition: stroke 0.35s ease, fill 0.35s ease, stroke-dasharray 0.4s ease, filter 0.25s ease;
}

.loom__rail.is-building .loom__rail-track {
  fill: rgba(255, 255, 255, 0.4);
}

.loom__rail.is-ready .loom__rail-track {
  fill: rgba(255, 255, 255, 0.94);
  stroke-width: 1.5;
  stroke-dasharray: none;
}

.loom__rail.is-hot .loom__rail-track {
  stroke-width: 2;
}

.loom__rail.is-dim {
  opacity: 0.42;
}

.loom__rail-meta {
  opacity: 0;
  pointer-events: none;
}

.loom__glyph {
  /* outer group keeps SVG transform — never let GSAP own this node */
  pointer-events: none;
}

.loom__glyph-motion {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
}

.loom__rail.is-ready .loom__rail-meta {
  opacity: 1;
  pointer-events: auto;
}

.loom__rail.is-ready .loom__glyph {
  pointer-events: auto;
}

.loom__rail.is-ready .loom__glyph-motion {
  opacity: 1;
}

.loom__rail-ghost {
  fill: rgba(18, 19, 26, 0.22);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.loom__rail.is-ready .loom__rail-ghost {
  opacity: 0;
}

.loom__rail-ico {
  color: var(--signal);
  fill: none;
  stroke: currentColor;
}

.loom__rail-name {
  fill: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.loom__rail-sub {
  fill: var(--ink-mute);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.loom__glyph--slides rect,
.loom__glyph--pdf path,
.loom__glyph--video rect,
.loom__glyph--video path,
.loom__glyph--video line,
.loom__glyph--canvas rect,
.loom__glyph--canvas path,
.loom__glyph--canvas circle {
  fill: none;
  stroke-width: 1.45;
  stroke-linejoin: round;
}

/* solid backs so sand → glyph reveal never reads as tangled wire stacks */
.loom__glyph--slides rect:first-child {
  fill: #fff;
  stroke-width: 1.5;
}
.loom__glyph--pdf path:first-child {
  fill: #fff;
}
.loom__glyph--video rect:first-child {
  fill: #fff;
}
.loom__glyph--canvas rect:first-child {
  fill: #fff;
}
.loom__glyph--canvas circle {
  fill: currentColor;
  stroke: none;
}

.loom__sand-grain,
.loom__bit {
  opacity: 0.92;
  pointer-events: none;
}

.loom__bit.is-slides,
.loom__sand-grain.is-slides { fill: var(--c-slides); }
.loom__bit.is-slides.is-lit,
.loom__sand-grain.is-slides.is-lit { fill: var(--c-slides-lit); }

.loom__bit.is-pdf,
.loom__sand-grain.is-pdf { fill: var(--c-pdf); }
.loom__bit.is-pdf.is-lit,
.loom__sand-grain.is-pdf.is-lit { fill: var(--c-pdf-lit); }

.loom__bit.is-video,
.loom__sand-grain.is-video { fill: var(--c-video); }
.loom__bit.is-video.is-lit,
.loom__sand-grain.is-video.is-lit { fill: var(--c-video-lit); }

.loom__bit.is-canvas,
.loom__sand-grain.is-canvas { fill: var(--c-canvas); }
.loom__bit.is-canvas.is-lit,
.loom__sand-grain.is-canvas.is-lit { fill: var(--c-canvas-lit); }

.loom__rail[data-rail="slides"] .loom__rail-ico,
.loom__rail[data-rail="slides"].is-ready .loom__rail-name,
.loom__rail[data-rail="slides"] .loom__glyph { color: var(--c-slides); }
.loom__rail[data-rail="slides"] .loom__glyph--slides rect,
.loom__rail[data-rail="slides"] .loom__glyph--slides path,
.loom__rail[data-rail="slides"] .loom__glyph--slides line { stroke: var(--c-slides); }

.loom__rail[data-rail="pdf"] .loom__rail-ico,
.loom__rail[data-rail="pdf"].is-ready .loom__rail-name,
.loom__rail[data-rail="pdf"] .loom__glyph { color: var(--c-pdf); }
.loom__rail[data-rail="pdf"] .loom__glyph--pdf path,
.loom__rail[data-rail="pdf"] .loom__glyph--pdf line { stroke: var(--c-pdf); }

.loom__rail[data-rail="video"] .loom__rail-ico,
.loom__rail[data-rail="video"].is-ready .loom__rail-name,
.loom__rail[data-rail="video"] .loom__glyph { color: var(--c-video); }
.loom__rail[data-rail="video"] .loom__glyph--video rect,
.loom__rail[data-rail="video"] .loom__glyph--video path,
.loom__rail[data-rail="video"] .loom__glyph--video line { stroke: var(--c-video); }

.loom__rail[data-rail="canvas"] .loom__rail-ico,
.loom__rail[data-rail="canvas"].is-ready .loom__rail-name,
.loom__rail[data-rail="canvas"] .loom__glyph { color: var(--c-canvas); }
.loom__rail[data-rail="canvas"] .loom__glyph--canvas rect,
.loom__rail[data-rail="canvas"] .loom__glyph--canvas path,
.loom__rail[data-rail="canvas"] .loom__glyph--canvas line { stroke: var(--c-canvas); }
.loom__rail[data-rail="canvas"] .loom__glyph--canvas circle { fill: var(--c-canvas); }

.loom__rail[data-rail="slides"].is-hot .loom__rail-track,
.loom__rail[data-rail="slides"].is-ready .loom__rail-track {
  stroke: rgba(234, 88, 12, 0.55);
  filter: drop-shadow(0 6px 14px rgba(234, 88, 12, 0.1));
}
.loom__rail[data-rail="slides"].is-hot .loom__rail-track {
  fill: rgba(234, 88, 12, 0.08);
}
.loom__rail[data-rail="pdf"].is-hot .loom__rail-track,
.loom__rail[data-rail="pdf"].is-ready .loom__rail-track {
  stroke: rgba(225, 29, 72, 0.55);
  filter: drop-shadow(0 6px 14px rgba(225, 29, 72, 0.1));
}
.loom__rail[data-rail="pdf"].is-hot .loom__rail-track {
  fill: rgba(225, 29, 72, 0.08);
}
.loom__rail[data-rail="video"].is-hot .loom__rail-track,
.loom__rail[data-rail="video"].is-ready .loom__rail-track {
  stroke: rgba(124, 58, 237, 0.55);
  filter: drop-shadow(0 6px 14px rgba(124, 58, 237, 0.1));
}
.loom__rail[data-rail="video"].is-hot .loom__rail-track {
  fill: rgba(124, 58, 237, 0.08);
}
.loom__rail[data-rail="canvas"].is-hot .loom__rail-track,
.loom__rail[data-rail="canvas"].is-ready .loom__rail-track {
  stroke: rgba(15, 118, 110, 0.55);
  filter: drop-shadow(0 6px 14px rgba(15, 118, 110, 0.1));
}
.loom__rail[data-rail="canvas"].is-hot .loom__rail-track {
  fill: rgba(15, 118, 110, 0.08);
}

.loom__warp path[data-rail="slides"] { stroke: rgba(234, 88, 12, 0.45); }
.loom__warp path[data-rail="pdf"] { stroke: rgba(225, 29, 72, 0.45); }
.loom__warp path[data-rail="video"] { stroke: rgba(124, 58, 237, 0.45); }
.loom__warp path[data-rail="canvas"] { stroke: rgba(15, 118, 110, 0.45); }

.loom__rail[data-rail="slides"] .loom__rail-ghost { fill: rgba(234, 88, 12, 0.3); }
.loom__rail[data-rail="pdf"] .loom__rail-ghost { fill: rgba(225, 29, 72, 0.3); }
.loom__rail[data-rail="video"] .loom__rail-ghost { fill: rgba(124, 58, 237, 0.3); }
.loom__rail[data-rail="canvas"] .loom__rail-ghost { fill: rgba(15, 118, 110, 0.3); }

.loom__cut-beam,
.loom__cut-ticks line { stroke: var(--ink); }

.stage__hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1.35rem;
  z-index: 2;
  margin: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  pointer-events: none;
}

/* ——— bands ——— */
.band {
  padding: clamp(2.75rem, 6.5vh, 4.5rem) 0;
  border-top: 1px solid var(--line);
}

.band__head {
  max-width: 38rem;
  margin-bottom: 2.25rem;
}

.band__head h2 {
  margin: 0.4rem 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.4vw, 2.65rem);
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.band__head p:not(.index) {
  margin: 0;
  color: var(--ink-soft);
  max-width: 34rem;
}

.index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.band--ink {
  position: relative;
  z-index: 1;
  background: var(--bg-deep);
  color: #f2f1ee;
  border-top-color: transparent;
}

.band--ink .index { color: #fb923c; }
.band--ink .band__head p:not(.index) { color: rgba(242, 241, 238, 0.65); }

.rails {
  display: grid;
  gap: 2.25rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

@media (min-width: 860px) {
  .rails {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border-top: 0;
    padding-top: 0;
  }
}

.rail {
  min-height: 0;
}

@media (min-width: 860px) {
  .rail {
    padding: 0 1.1rem 1.35rem;
    border-right: 1px solid var(--line);
  }
  .rail:nth-child(2n) {
    border-right: 0;
    padding-right: 0;
  }
  .rail:nth-child(2n + 1) { padding-left: 0; }
  .rail:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
  .rail:nth-child(n + 3) {
    padding-top: 1.35rem;
    padding-bottom: 0;
  }
}

/* One panel per rail: chrome + play + foot live inside the stage */
.rail__stage {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 19.5rem;
  padding: 0.95rem 1rem 1.05rem;
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  cursor: default;
  transition: box-shadow 0.35s ease, transform 0.45s var(--ease);
}

@media (hover: hover) and (pointer: fine) {
  .rail__stage { touch-action: none; }
}

.rail--slides .rail__stage {
  background:
    radial-gradient(130% 90% at 12% 8%, rgba(234, 88, 12, 0.18), transparent 52%),
    linear-gradient(165deg, rgba(255, 247, 237, 0.95), rgba(255, 255, 255, 0.55) 55%, rgba(254, 243, 226, 0.65));
  box-shadow: inset 0 0 0 1px rgba(234, 88, 12, 0.18);
}
.rail--pdf .rail__stage {
  background:
    radial-gradient(120% 85% at 88% 10%, rgba(225, 29, 72, 0.16), transparent 52%),
    linear-gradient(165deg, rgba(255, 241, 242, 0.95), rgba(255, 255, 255, 0.55) 55%, rgba(255, 228, 230, 0.55));
  box-shadow: inset 0 0 0 1px rgba(225, 29, 72, 0.18);
}
.rail--video .rail__stage {
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(124, 58, 237, 0.18), transparent 55%),
    linear-gradient(165deg, rgba(245, 243, 255, 0.95), rgba(255, 255, 255, 0.55) 55%, rgba(237, 233, 254, 0.6));
  box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.18);
}
.rail--canvas .rail__stage {
  background:
    radial-gradient(120% 90% at 20% 0%, rgba(15, 118, 110, 0.16), transparent 55%),
    linear-gradient(165deg, rgba(240, 253, 250, 0.95), rgba(255, 255, 255, 0.55) 55%, rgba(204, 251, 241, 0.55));
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.18);
}

.rail:hover .rail__stage {
  transform: translateY(-2px);
}

.rail__chrome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  z-index: 2;
}

.rail__title {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  min-width: 0;
}

.rail__n {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  line-height: 1;
  flex-shrink: 0;
}

.rail--slides .rail__n { color: var(--c-slides); }
.rail--pdf .rail__n { color: var(--c-pdf); }
.rail--video .rail__n { color: var(--c-video); }
.rail--canvas .rail__n { color: var(--c-canvas); }

.rail__title h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 1.55vw, 1.32rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.rail__icon {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  flex-shrink: 0;
  transition: transform 0.45s var(--ease), background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.rail--slides .rail__icon {
  color: var(--c-slides);
  background: rgba(234, 88, 12, 0.12);
  box-shadow: inset 0 0 0 1px rgba(234, 88, 12, 0.24);
}
.rail--pdf .rail__icon {
  color: var(--c-pdf);
  background: rgba(225, 29, 72, 0.12);
  box-shadow: inset 0 0 0 1px rgba(225, 29, 72, 0.24);
}
.rail--video .rail__icon {
  color: var(--c-video);
  background: rgba(124, 58, 237, 0.12);
  box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.24);
}
.rail--canvas .rail__icon {
  color: var(--c-canvas);
  background: rgba(15, 118, 110, 0.12);
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.24);
}

.rail__icon svg {
  width: 1.1rem;
  height: 1.1rem;
}

.rail--slides:hover .rail__icon { background: var(--c-slides); color: #fff; box-shadow: none; transform: rotate(-8deg) scale(1.06); }
.rail--pdf:hover .rail__icon { background: var(--c-pdf); color: #fff; box-shadow: none; transform: rotate(-8deg) scale(1.06); }
.rail--video:hover .rail__icon { background: var(--c-video); color: #fff; box-shadow: none; transform: rotate(-8deg) scale(1.06); }
.rail--canvas:hover .rail__icon { background: var(--c-canvas); color: #fff; box-shadow: none; transform: rotate(-8deg) scale(1.06); }

.rail__play {
  display: grid;
  place-items: center;
  min-height: 10.5rem;
  padding: 0.55rem 0 0.65rem;
}

.rail__foot {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 0.2rem;
  padding-top: 0.65rem;
  border-top: 1px solid rgba(28, 25, 23, 0.08);
}

.rail__foot p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.4;
  max-width: 32ch;
}

.rail__hint {
  margin: 0.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transform: translateY(3px);
  transition: opacity 0.3s ease, transform 0.3s var(--ease), max-height 0.3s ease;
  pointer-events: none;
  max-width: none !important;
}

.rail:hover .rail__hint,
.rail__stage:focus-within .rail__hint {
  opacity: 1;
  max-height: 2rem;
  transform: translateY(0);
}

/* ——— slides deck ——— */
.gap-slides {
  position: relative;
  width: min(12.4rem, 84%);
  height: 7.8rem;
  perspective: 720px;
  transform-style: preserve-3d;
}

.gap-slides__card {
  position: absolute;
  inset: 0;
  border: 1.5px solid rgba(234, 88, 12, 0.42);
  background:
    linear-gradient(180deg, #fff 0 1.35rem, transparent 1.35rem),
    #fffdfb;
  box-shadow: 0 14px 28px rgba(234, 88, 12, 0.1);
  transform-origin: 50% 100%;
  backface-visibility: hidden;
}

.gap-slides__card em {
  position: absolute;
  right: 0.55rem;
  bottom: 0.4rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: rgba(234, 88, 12, 0.45);
}

.gap-slides__card[data-deck="0"] {
  transform: translate(18px, -16px) rotate(-6deg);
  opacity: 0.34;
  filter: saturate(0.7);
}
.gap-slides__card[data-deck="1"] {
  transform: translate(9px, -8px) rotate(-2.5deg);
  opacity: 0.62;
}
.gap-slides__card.is-front {
  display: grid;
  align-content: start;
  gap: 0.38rem;
  padding: 1.55rem 0.9rem 0.85rem;
  z-index: 2;
}

.gap-slides__title {
  /* skeleton title bar — intentionally empty of glyphs */
  display: block;
  height: 6px;
  width: 58%;
  margin-bottom: 0.2rem;
  background: rgba(234, 88, 12, 0.55);
  border-radius: 1px;
}

.gap-slides__line {
  display: block;
  height: 3px;
  width: 82%;
  background: rgba(234, 88, 12, 0.28);
  border-radius: 1px;
}
.gap-slides__line--short { width: 46%; }

.gap-slides__bullet {
  display: block;
  height: 3px;
  width: 62%;
  margin-top: 0.15rem;
  background: rgba(234, 88, 12, 0.18);
  border-radius: 1px;
  box-shadow: inset 0.55rem 0 0 rgba(234, 88, 12, 0.45);
  padding-left: 0;
}
.gap-slides__bullet--b { width: 48%; }

.gap-slides__caret {
  position: absolute;
  left: 0.9rem;
  top: 2.55rem;
  width: 1.5px;
  height: 0.9rem;
  background: var(--c-slides);
  animation: caret-blink 1s steps(1) infinite;
}

.gap-slides__cursor {
  position: absolute;
  left: 58%;
  top: 42%;
  z-index: 4;
  width: 0.7rem;
  height: 0.7rem;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid transparent;
  border-right: 2px solid transparent;
  border-top: 2px solid transparent;
  transform: rotate(-28deg);
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.18));
  pointer-events: none;
  opacity: 0.85;
  transition: opacity 0.25s ease;
}

.rail--slides:not(:hover) .gap-slides__cursor { opacity: 0.35; }

@keyframes caret-blink {
  50% { opacity: 0; }
}

/* ——— pdf select ——— */
.gap-pdf {
  display: grid;
  grid-template-columns: 1.8rem 1fr;
  gap: 0.5rem;
  width: min(13rem, 90%);
  height: 8.6rem;
  align-items: stretch;
}

.gap-pdf__outline {
  display: grid;
  align-content: center;
  gap: 0.45rem;
  padding: 0.55rem 0.3rem;
  background: rgba(225, 29, 72, 0.06);
  box-shadow: inset 0 0 0 1px rgba(225, 29, 72, 0.14);
}

.gap-pdf__outline i {
  display: block;
  height: 3px;
  width: 70%;
  margin-inline: auto;
  background: rgba(225, 29, 72, 0.28);
  border-radius: 1px;
  transition: background 0.25s ease, width 0.25s ease;
}
.gap-pdf__outline i:nth-child(2) { width: 55%; }
.gap-pdf__outline i:nth-child(4) { width: 48%; }
.gap-pdf__outline i.is-on {
  width: 85%;
  background: var(--c-pdf);
}

.gap-pdf__page {
  position: relative;
  border: 1.5px solid rgba(225, 29, 72, 0.38);
  background: #fff;
  padding: 1.35rem 0.75rem 0.65rem 1rem;
  display: grid;
  align-content: start;
  gap: 0.4rem;
  box-shadow: 0 14px 28px rgba(225, 29, 72, 0.08);
  overflow: hidden;
}

.gap-pdf__mark {
  position: absolute;
  left: 0;
  top: 1.55rem;
  width: 0.32rem;
  height: 1.15rem;
  background: var(--c-pdf);
  border-radius: 0 2px 2px 0;
}

.gap-pdf__find {
  position: absolute;
  top: 0.35rem;
  right: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(225, 29, 72, 0.55);
  padding: 0.12rem 0.3rem;
  box-shadow: inset 0 0 0 1px rgba(225, 29, 72, 0.28);
  background: rgba(225, 29, 72, 0.06);
  opacity: 0.55;
  transition: opacity 0.3s ease, background 0.3s ease;
}

.rail--pdf:hover .gap-pdf__find,
.gap-pdf.is-finding .gap-pdf__find {
  opacity: 1;
  background: rgba(225, 29, 72, 0.12);
  color: var(--c-pdf);
}

.gap-pdf__hline {
  display: block;
  height: 4px;
  width: 42%;
  margin-bottom: 0.15rem;
  background: rgba(225, 29, 72, 0.45);
  border-radius: 1px;
}

.gap-pdf__line {
  display: block;
  height: 3px;
  width: 100%;
  background: rgba(225, 29, 72, 0.2);
  border-radius: 1px;
}
.gap-pdf__line--mid { width: 74%; }
.gap-pdf__line--sm { width: 58%; }

.gap-pdf__sel {
  position: absolute;
  left: 1rem;
  top: 2.35rem;
  height: 0.7rem;
  width: 0;
  background: rgba(225, 29, 72, 0.2);
  box-shadow: 0 0 0 1px rgba(225, 29, 72, 0.12);
  border-radius: 1px;
  pointer-events: none;
}

/* ——— video scrub ——— */
.gap-video {
  width: min(13.2rem, 92%);
  display: grid;
  gap: 0.45rem;
}

.gap-video__frame {
  position: relative;
  height: 5.5rem;
  border: 1.5px solid rgba(124, 58, 237, 0.4);
  background: rgba(124, 58, 237, 0.07);
  overflow: hidden;
  box-shadow: 0 14px 28px rgba(124, 58, 237, 0.1);
}

.gap-video__shot {
  position: absolute;
  inset: 0;
  opacity: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(120deg, rgba(124, 58, 237, 0.28), transparent 55%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 6px,
      rgba(124, 58, 237, 0.1) 6px,
      rgba(124, 58, 237, 0.1) 7px
    );
  transition: opacity 0.22s ease;
}
.gap-video__shot.is-on { opacity: 1; }
.gap-video__shot[data-shot="1"] {
  background:
    linear-gradient(200deg, rgba(167, 139, 250, 0.4), transparent 50%),
    repeating-linear-gradient(8deg, transparent, transparent 5px, rgba(124, 58, 237, 0.12) 5px, rgba(124, 58, 237, 0.12) 6px);
}
.gap-video__shot[data-shot="2"] {
  background:
    radial-gradient(42% 52% at 62% 42%, rgba(167, 139, 250, 0.5), transparent 70%),
    rgba(124, 58, 237, 0.16);
}

.gap-video__shot b {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.82);
  text-shadow: 0 1px 8px rgba(76, 29, 149, 0.35);
  letter-spacing: 0.04em;
}

.gap-video__tc {
  position: absolute;
  left: 0.45rem;
  bottom: 0.35rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(46, 16, 101, 0.45);
  padding: 0.12rem 0.35rem;
}

.gap-video__strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.28rem;
}

.gap-video__strip i {
  display: block;
  height: 0.85rem;
  background: rgba(124, 58, 237, 0.14);
  box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.22);
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.gap-video__strip i.is-on {
  background: rgba(124, 58, 237, 0.32);
  box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.55);
  transform: translateY(-1px);
}
.gap-video__strip i[data-clip="0"] {
  background-image: linear-gradient(120deg, rgba(124, 58, 237, 0.25), transparent);
}
.gap-video__strip i[data-clip="1"] {
  background-image: linear-gradient(200deg, rgba(167, 139, 250, 0.35), transparent);
}
.gap-video__strip i[data-clip="2"] {
  background-image: radial-gradient(60% 80% at 50% 50%, rgba(167, 139, 250, 0.4), transparent);
}

/* thin scrubber can own the gesture; card body stays pan-y for page scroll */
.gap-video__tl {
  touch-action: none;
  position: relative;
  height: 0.7rem;
  background: rgba(124, 58, 237, 0.1);
  border-radius: 1px;
  cursor: ew-resize;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.16);
}

.gap-video__wave {
  position: absolute;
  inset: 0.12rem 0.15rem;
  opacity: 0.55;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(124, 58, 237, 0.55) 0 2px,
      transparent 2px 5px
    );
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  pointer-events: none;
}

.gap-video__head {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: var(--c-video);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35);
  transform: translateX(-1px);
  pointer-events: none;
  z-index: 1;
}

.gap-canvas {
  display: grid;
  gap: 0.45rem;
  height: 100%;
  min-height: 9.5rem;
  align-content: stretch;
}

.gap-canvas__chrome {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.35rem 0.45rem;
  background: rgba(15, 118, 110, 0.08);
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.16);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  color: rgba(15, 118, 110, 0.75);
}

.gap-canvas__chrome i {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.28);
}
.gap-canvas__chrome i:nth-child(1) { background: #f87171; }
.gap-canvas__chrome i:nth-child(2) { background: #fbbf24; }
.gap-canvas__chrome i:nth-child(3) { background: #34d399; }
.gap-canvas__chrome span { margin-left: 0.35rem; }

.gap-canvas__stage {
  position: relative;
  flex: 1;
  min-height: 7.2rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(240, 253, 250, 0.55));
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.14);
  overflow: hidden;
}

.gap-canvas__block {
  position: absolute;
  left: 8%;
  top: 14%;
  width: 42%;
  height: 48%;
  background: rgba(15, 118, 110, 0.16);
  box-shadow: inset 0 0 0 1px rgba(15, 118, 110, 0.28);
  border-radius: 2px;
  transform-origin: center center;
}
.gap-canvas__block--b {
  left: 54%;
  top: 18%;
  width: 34%;
  height: 28%;
  background: rgba(45, 212, 191, 0.28);
}
.gap-canvas__block--c {
  left: 54%;
  top: 52%;
  width: 34%;
  height: 22%;
  background: rgba(15, 118, 110, 0.1);
}
.gap-canvas__block.is-pin {
  box-shadow:
    inset 0 0 0 1.5px rgba(15, 118, 110, 0.65),
    0 0 0 1px rgba(45, 212, 191, 0.35);
  background: rgba(15, 118, 110, 0.28);
}

.gap-canvas__cursor {
  position: absolute;
  left: 62%;
  top: 40%;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--c-canvas);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.18);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 2;
  opacity: 0.4;
  transition: opacity 0.25s ease;
}
.rail--canvas:hover .gap-canvas__cursor { opacity: 1; }

/* ——— 02 boundary: one cut through one board ——— */
.boundary {
  position: relative;
  margin-top: 0.35rem;
}

.boundary__cut {
  display: none;
  position: absolute;
  top: 1.65rem; /* under legend */
  bottom: 0;
  left: 50%;
  width: 0;
  z-index: 0;
  pointer-events: none;
}

@media (min-width: 820px) {
  .boundary__cut { display: block; }
}

.boundary__cut-beam {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(251, 146, 60, 0.55) 12%,
    rgba(251, 146, 60, 0.75) 50%,
    rgba(251, 146, 60, 0.55) 88%,
    transparent 100%
  );
  transform: scaleY(0);
  transform-origin: top center;
}

.boundary__cut-knob {
  position: absolute;
  top: 0;
  left: 0;
  width: 7px;
  height: 7px;
  margin: -3px -3px 0;
  border-radius: 50%;
  background: #fb923c;
  box-shadow: 0 0 0 3px rgba(251, 146, 60, 0.12);
  opacity: 0;
  transform: scale(0.4);
}

.boundary__legend {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 0.75rem 1rem;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.boundary__h--is { color: #fb923c; }
.boundary__h--cut {
  color: rgba(242, 241, 238, 0.32);
  text-align: center;
  min-width: 2.5rem;
}
.boundary__h--not {
  color: rgba(242, 241, 238, 0.38);
  text-align: right;
}

.boundary__rows {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0;
}

.boundary__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
  padding: 1.05rem 0;
  border-top: 1px solid rgba(242, 241, 238, 0.1);
}

@media (min-width: 820px) {
  .boundary__row {
    grid-template-columns: 1fr 2.5rem 1fr;
    align-items: center;
    gap: 1rem;
    padding: 1.15rem 0;
  }
}

.boundary__row:last-child {
  border-bottom: 1px solid rgba(242, 241, 238, 0.1);
}

.boundary__is,
.boundary__not {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.05rem, 1.55vw, 1.28rem);
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.boundary__is { color: #f2f1ee; }
.boundary__not {
  position: relative;
  display: inline-block;
  justify-self: start;
  color: rgba(242, 241, 238, 0.4);
  text-decoration: line-through;
  text-decoration-color: rgb(242 241 238 / var(--strike, 0));
  text-decoration-thickness: 1px;
  transition: color 0.3s ease;
}

@media (min-width: 820px) {
  .boundary__not {
    justify-self: end;
    text-align: right;
  }
}

.boundary__tick {
  display: none;
  width: 9px;
  height: 1px;
  margin-inline: auto;
  background: rgba(251, 146, 60, 0.7);
  opacity: 0;
  transform: scaleX(0);
  transform-origin: center;
}

@media (min-width: 820px) {
  .boundary__tick { display: block; }
}

.boundary__row:hover .boundary__is { color: #fff; }
.boundary__row:hover .boundary__not { color: rgba(242, 241, 238, 0.28); }

.eighty {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin: 2.5rem 0 0;
  padding: 1.35rem 0 0;
  border-top: 1px solid rgba(242, 241, 238, 0.12);
  color: rgba(242, 241, 238, 0.72);
  font-size: 0.95rem;
}

.eighty__pair {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 0.75rem;
}

.eighty__n {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  letter-spacing: -0.04em;
  color: #fb923c;
  line-height: 1;
}

.eighty__pair--mute .eighty__n {
  color: rgba(242, 241, 238, 0.38);
}

.eighty__rule {
  display: none;
  width: 1px;
  height: 1.75rem;
  background: rgba(242, 241, 238, 0.18);
}

@media (min-width: 640px) {
  .eighty__rule { display: block; }
}

/* ——— 03 proofboard: source → compile → three contracts → theme ——— */
.proofboard {
  display: grid;
  gap: 1.75rem;
}

.proof-src {
  max-width: 34rem;
  padding-bottom: 0.25rem;
}

/* same hierarchy as band eyebrow → title → lede; .loomd is the type label, not a peer to 源稿 */
.proof-src::before {
  content: "";
  display: block;
  width: 1.75rem;
  height: 2px;
  margin-bottom: 0.95rem;
  background: var(--c-md);
}

.proof-src__ext {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--c-md);
}

.proof-src__k {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--ink);
}

.proof-src__v {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.5;
}

.proof-flow {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
}

.proof-flow__cut {
  flex-shrink: 0;
  padding: 0.3rem 0.65rem;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: #fff;
}

.proof-flow__rail {
  position: relative;
  display: block;
  flex: 1;
  height: 1px;
  background: var(--line);
  overflow: hidden;
}

.proof-flow__rail::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--signal), transparent);
  transform: scaleX(var(--rail, 0));
  transform-origin: left center;
}

.proof-outs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 860px) {
  .proof-outs {
    grid-template-columns: repeat(2, 1fr);
  }
}

.proof-out {
  position: relative;
  padding: 1.35rem 0 1.45rem;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}

@media (min-width: 860px) {
  .proof-out {
    padding: 1.35rem 1.25rem 1.45rem;
    border-bottom: none;
  }
  .proof-out:nth-child(2n + 1) { padding-left: 0; }
  .proof-out:nth-child(2n) {
    border-left: 1px solid var(--line);
  }
  .proof-out:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }
}

.proof-out::before {
  content: "";
  display: block;
  width: 1.75rem;
  height: 2px;
  margin-bottom: 1rem;
  background: var(--signal);
  transition: width 0.4s var(--ease);
}

.proof-out--slides::before { background: var(--c-slides); }
.proof-out--pdf::before { background: var(--c-pdf); }
.proof-out--video::before { background: var(--c-video); }
.proof-out--canvas::before { background: var(--c-canvas); }

.proof-out:hover::before { width: 2.75rem; }

.proof-out__head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.7rem;
}

.proof-out__ico {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
}

.proof-out__ico svg {
  width: 1.15rem;
  height: 1.15rem;
}

.proof-out--slides .proof-out__ico { color: var(--c-slides); }
.proof-out--pdf .proof-out__ico { color: var(--c-pdf); }
.proof-out--video .proof-out__ico { color: var(--c-video); }
.proof-out--canvas .proof-out__ico { color: var(--c-canvas); }

.proof-out__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.proof-out__yes {
  margin: 0 0 0.4rem;
  color: var(--ink);
  font-size: 0.98rem;
  line-height: 1.4;
}

.proof-out__no {
  margin: 0;
  color: var(--ink-mute);
  font-size: 0.86rem;
  line-height: 1.4;
  text-decoration: line-through;
  text-decoration-color: rgba(28, 25, 23, 0.28);
}

.proof-theme {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.65rem 1rem;
  margin: 0.25rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
  position: relative;
}

.proof-theme::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: var(--theme-line, 0%);
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--c-slides),
    var(--c-pdf),
    var(--c-video),
    var(--c-canvas)
  );
}

.proof-theme__k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}

.proof-theme__v {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.triad__chip--slides { border-color: rgba(234, 88, 12, 0.28); background: rgba(234, 88, 12, 0.06); }
.triad__chip--slides .triad__icon { color: var(--c-slides); }
.triad__chip--slides:hover { background: var(--c-slides); border-color: var(--c-slides); }
.triad__chip--pdf { border-color: rgba(225, 29, 72, 0.28); background: rgba(225, 29, 72, 0.06); }
.triad__chip--pdf .triad__icon { color: var(--c-pdf); }
.triad__chip--pdf:hover { background: var(--c-pdf); border-color: var(--c-pdf); }
.triad__chip--video { border-color: rgba(124, 58, 237, 0.28); background: rgba(124, 58, 237, 0.06); }
.triad__chip--video .triad__icon { color: var(--c-video); }
.triad__chip--video:hover { background: var(--c-video); border-color: var(--c-video); }

/* ——— 04 close: same shell as every band ——— */
.band--close {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(42% 55% at 12% 80%, rgba(234, 88, 12, 0.1), transparent 60%),
    radial-gradient(36% 48% at 88% 20%, rgba(225, 29, 72, 0.07), transparent 55%),
    radial-gradient(30% 40% at 70% 90%, rgba(124, 58, 237, 0.06), transparent 55%),
    var(--bg);
}

.close {
  display: grid;
  gap: 1.5rem;
  align-items: end;
}

@media (min-width: 860px) {
  .close {
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 2rem;
  }

  .close .band__head {
    margin-bottom: 0;
  }
}

.close .cta-row {
  flex-wrap: wrap;
  /* same skew clearance as hero CTAs */
  padding: 0.2rem 0.55rem 0.45rem 0.5rem;
  margin: 0 -0.35rem;
}

.foot {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2.2rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.foot__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  align-items: baseline;
}

.foot strong {
  display: inline-block;
  margin-right: 0.65rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.foot__brand {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-bottom: 1px solid rgba(28, 25, 23, 0.28);
}
.foot__brand:hover {
  border-bottom-color: var(--ink);
  text-decoration: none;
}
.foot__brand .brand-tld {
  color: var(--signal);
}

.foot nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.35rem;
}

.foot nav a:hover {
  color: var(--ink);
  text-decoration: underline;
}

/* only when user toggles language — never on first paint */
body.is-lang-switching [data-i18n] {
  opacity: 0.3;
  transition: opacity 0.12s ease;
}

@media (max-width: 860px) {
  .top__inner {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 0.35rem 0.75rem;
    min-height: 0;
    padding-block: 0.55rem 0.65rem;
  }
  .logo { grid-column: 1; grid-row: 1; }
  .top__end { grid-column: 2; grid-row: 1; }
  /* keep anchors reachable — horizontal strip instead of hiding nav */
  .nav {
    display: flex;
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    gap: 1rem;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0.15rem 0 0.2rem;
    mask-image: linear-gradient(90deg, #000 85%, transparent);
  }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { flex: 0 0 auto; }
  .top .btn--ink {
    --pad-x: 0.85rem;
    min-height: 2.25rem;
    font-size: 0.64rem;
    letter-spacing: 0.1em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transform: none; }
  .btn-text { transform: none; }
  .rail:hover .rail__icon { transform: none; }
  .triad__chip:hover { transform: none; }
  .gap-slides__caret { animation: none; }
  .proof-out:hover::before { width: 1.75rem; }
  .proof-flow__rail { --rail: 1; }
  .proof-theme { --theme-line: 100%; }
  .boundary__not { --strike: 1; }
  .boundary__cut-beam { transform: scaleY(1); }
  .boundary__cut-knob { opacity: 1; transform: none; top: 72%; }
  .boundary__tick { opacity: 1; transform: none; }
}

@media print {
  .band__head,
  .rail,
  .close .cta-row,
  .boundary__legend,
  .boundary__row,
  .boundary__is,
  .boundary__not,
  .eighty,
  .proof-src,
  .proof-flow,
  .proof-out,
  .proof-theme {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
  }
  .boundary__not { --strike: 1; }
  .boundary__cut-beam { transform: scaleY(1) !important; }
  .proof-flow__rail { --rail: 1; }
  .proof-theme { --theme-line: 100%; }
  .tbd { display: none !important; }
}

/* ——— docs TBD toast ——— */
.tbd {
  position: fixed;
  inset: auto 0 1.35rem;
  z-index: 80;
  display: flex;
  justify-content: center;
  padding: 0 var(--gutter);
  pointer-events: none;
}

.tbd[hidden] { display: none !important; }

/* No-JS fallback: packed CTAs use href="#tbd" — :target reveals the toast */
.tbd:target {
  display: flex !important;
}
.tbd:target .tbd__card {
  opacity: 1;
  transform: none;
}

.tbd__card {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  max-width: 28rem;
  width: min(100%, 28rem);
  padding: 0.85rem 0.95rem 0.85rem 1rem;
  background: var(--bg-deep);
  color: #f2f1ee;
  border: 1px solid rgba(242, 241, 238, 0.12);
  border-radius: var(--radius);
  opacity: 0;
  transform: translateY(0.75rem);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}

.tbd.is-on .tbd__card {
  opacity: 1;
  transform: translateY(0);
}

.tbd__knob {
  flex: 0 0 auto;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(194, 65, 12, 0.22);
}

.tbd__copy { min-width: 0; flex: 1; }

.tbd__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fb923c;
}

.tbd__v {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
  line-height: 1.4;
  color: rgba(242, 241, 238, 0.82);
}

.tbd__x {
  appearance: none;
  border: 0;
  margin: 0;
  padding: 0.15rem 0.4rem;
  background: transparent;
  color: rgba(242, 241, 238, 0.45);
  font: inherit;
  font-size: 1.15rem;
  line-height: 1;
  cursor: pointer;
}

.tbd__x:hover { color: #fff; }

[data-tbd] { cursor: pointer; }