/* macrostructure: two-engine-split (nav · hero-tray · problem-duo · engines-signature · proof · grounding-inkband · formats+pipeline · footer)
   slop-critique: P5 H5 E5 S5 R4 V5
   sweep: pass — visual(1-7) · structural(8-9, icon-beside not tiles) · micro(10-19, single hover, named transitions)
          · impl(22-27) · a11y(32-33 aria-hidden art) · layout(34-36, overflow-x clip)
          · contrast(41-42, body ≥5.4:1, white-on-persimmon 5.07, dark band flips ink) · chrome(48 real screenshots)
          · tokens(49 all colors tokenized) · mobile(50-57, minmax(0,1fr) on image grids, keep-all wrap)
   palette: celadon paper + soy ink + persimmon(brand/HWP-rhwp) + cheong-blue(PPT-Vision) — Korean-material derived */

:root {
  /* surfaces — celadon paper, tinted neutrals (no zero-chroma) */
  --paper: #e7ece4;
  --paper-2: #f2f5ef;
  --card: #ffffff;
  --ink-band: #1c221b;

  /* ink */
  --ink: #22261f;
  --ink-soft: #596054;
  --line: #cfd8cb;
  --line-2: #dde4d9;

  /* accents */
  --persimmon: #c63f27;      /* brand · HWP/rhwp lane · fills (white text = 5.07:1) */
  --persimmon-ink: #b0381f;  /* persimmon text/links on paper (5.10:1) */
  --vision: #2e6fb0;         /* PPT/Vision lane · fills */
  --vision-ink: #275f97;     /* vision text/links on paper (5.53:1) */
  --tint-persimmon: #fbece7;
  --tint-vision: #eaf1f8;
  --on-accent: #ffffff;
  --on-band: #e7ece4;
  --on-band-soft: #b9c2b4;
  --persimmon-light: #f0b3a4;      /* accent on the dark band */
  --ok-ink: #17603a;               /* "live" status text */
  --ok-bg: #dff0e5;                /* "live" status fill */
  --band-surface: rgba(231, 236, 228, 0.04);
  --band-surface-2: rgba(231, 236, 228, 0.08);
  --band-border: rgba(231, 236, 228, 0.14);
  --scrim: rgba(28, 34, 27, 0.86); /* lightbox backdrop */

  /* type */
  --font-display: "Bricolage Grotesque", "Pretendard", system-ui, sans-serif;
  --font-body: "Pretendard", "Segoe UI", system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Consolas", monospace;

  /* spacing scale — multiples of 4 */
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px; --s5: 24px;
  --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px; --s10: 128px;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --maxw: 1120px;
  --shadow: 0 18px 44px rgba(28, 34, 27, 0.10);
  --shadow-sm: 0 6px 18px rgba(28, 34, 27, 0.08);

  --z-nav: 50;
  --z-lightbox: 90;
}

* { box-sizing: border-box; }

html, body { overflow-x: clip; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(820px 520px at 90% -10%, color-mix(in srgb, var(--persimmon) 7%, transparent), transparent 60%),
    var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: keep-all; /* keep Korean words intact; break at spaces */
}

a { color: var(--persimmon-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--s5); }

:focus-visible {
  outline: 2px solid var(--persimmon);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--on-band);
  padding: var(--s3) var(--s4); border-radius: 0 0 var(--radius-sm) 0; z-index: 100;
}
.skip:focus { left: 0; }

/* ---------------- shared section rhythm ---------------- */
section { padding-block: clamp(56px, 6vw, 104px); }
.eyebrow {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--persimmon-ink);
  display: inline-flex; align-items: center; gap: var(--s2);
  margin: 0 0 var(--s4); line-height: 1.1;
}
.eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--persimmon); border-radius: 2px;
}
h2.sec {
  font-family: var(--font-display);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.08;
  font-size: clamp(1.7rem, 1.15rem + 2vw, 2.55rem);
  margin: 0 0 var(--s4); max-width: 22ch;
  overflow-wrap: anywhere; min-width: 0;
}
h3, h4 { overflow-wrap: anywhere; }
.sec-lead {
  font-size: clamp(1.02rem, 0.98rem + 0.4vw, 1.2rem);
  color: var(--ink-soft); max-width: 62ch; margin: 0 0 var(--s7);
}

/* ---------------- nav ---------------- */
.nav {
  position: sticky; top: 0; z-index: var(--z-nav);
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px; position: relative;
}
.brand { display: inline-flex; align-items: center; gap: var(--s3); font-weight: 800; letter-spacing: -0.01em; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand .mark { width: 34px; height: 34px; flex: none; display: block; }
.brand b { font-size: 1.02rem; line-height: 1; }
.brand .sub { display: block; font-size: 0.68rem; font-weight: 600; color: var(--ink-soft); letter-spacing: 0.01em; margin-top: 3px; }
.nav-right { display: flex; align-items: center; gap: var(--s3); }

.lang {
  display: inline-flex; align-items: center; gap: 2px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px;
}
.lang button {
  font: inherit; font-size: 0.78rem; font-weight: 700; line-height: 1;
  border: 0; background: transparent; color: var(--ink-soft);
  padding: var(--s2) var(--s3); border-radius: 999px; cursor: pointer;
  transition: color .15s ease, background-color .15s ease;
}
.lang button:hover { color: var(--ink); }
.lang button.active { background: var(--ink); color: var(--on-band); }
.lang button:focus-visible { outline: 2px solid var(--persimmon); outline-offset: 2px; }

.nav-gh {
  display: inline-flex; align-items: center; gap: var(--s2); line-height: 1;
  font-size: 0.85rem; font-weight: 700; color: var(--ink);
  padding: var(--s2) var(--s3); border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); transition: border-color .15s ease;
}
.nav-gh:hover { border-color: var(--ink); text-decoration: none; }
.nav-gh svg { width: 16px; height: 16px; }

.nav-progress {
  position: absolute; left: 0; bottom: -1px; height: 2px; width: 0;
  background: var(--persimmon); border-radius: 0 2px 2px 0;
}

/* ---------------- buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  font: inherit; font-weight: 700; line-height: 1;
  min-height: 46px; padding: 0 var(--s5); border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; white-space: nowrap;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .12s ease, box-shadow .18s ease;
}
.btn svg { width: 17px; height: 17px; }
.btn.primary { background: var(--persimmon); color: var(--on-accent); box-shadow: var(--shadow-sm); }
.btn.primary:hover { background: var(--persimmon-ink); text-decoration: none; }
.btn.primary:active { transform: translateY(1px); }
.btn.primary:focus-visible { outline: 2px solid var(--persimmon); outline-offset: 3px; }
.btn.ghost { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); text-decoration: none; }
.btn.ghost:active { transform: translateY(1px); }
.btn.ghost:focus-visible { outline: 2px solid var(--persimmon); outline-offset: 3px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ---------------- hero ---------------- */
.hero { padding-block: clamp(40px, 4vw, 60px) clamp(64px, 7vw, 112px); }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(var(--s6), 5vw, var(--s9)); align-items: center;
}
.badge {
  display: inline-flex; align-items: center; gap: var(--s2);
  font-size: 0.78rem; font-weight: 700; color: var(--ink-soft);
  background: var(--card); border: 1px solid var(--line);
  padding: var(--s2) var(--s3); border-radius: 999px; margin-bottom: var(--s5); line-height: 1;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--persimmon); }
.hero h1 {
  font-family: var(--font-display);
  font-weight: 800; letter-spacing: -0.025em; line-height: 1.05;
  font-size: clamp(2.25rem, 1.5rem + 3.3vw, 3.9rem);
  margin: 0 0 var(--s5); white-space: pre-line;
  overflow-wrap: anywhere; min-width: 0;
}
.hero h1 .hl { color: var(--persimmon-ink); }
.hero .lead {
  font-size: clamp(1.06rem, 1rem + 0.5vw, 1.26rem);
  color: var(--ink-soft); max-width: 52ch; margin: 0 0 var(--s6);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--s3); align-items: center; }

/* naming chain — honest, motivated micro-strip */
.chain {
  margin-top: var(--s7); padding-top: var(--s5); border-top: 1px dashed var(--line);
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--s2) var(--s3);
  font-size: 0.92rem; color: var(--ink-soft);
}
.chain b { color: var(--ink); }
.chain .arrow { color: var(--persimmon); font-weight: 700; }

/* hero tray visual */
.tray { position: relative; }
.tray-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: clamp(var(--s5), 3vw, var(--s7));
}
.tray-title {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s3);
  font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; margin-bottom: var(--s5);
}
.tray-title .plate { display: inline-flex; align-items: center; gap: var(--s2); }
.tray-title .plate svg { width: 20px; height: 20px; color: var(--persimmon); }
.tray-slots { display: grid; gap: var(--s4); }
.slot {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: center;
  gap: var(--s4); padding: var(--s4); border-radius: var(--radius-sm);
  border: 1px solid var(--line-2); background: var(--paper-2);
}
.slot .fmt {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.68rem; font-weight: 700; color: var(--on-accent);
}
.slot.ppt .fmt { background: var(--vision); }
.slot.hwp .fmt { background: var(--persimmon); }
.slot .eng { font-size: 0.82rem; color: var(--ink-soft); }
.slot .eng b { display: block; color: var(--ink); font-size: 0.95rem; }
.slot .via {
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  padding: var(--s1) var(--s2); border-radius: 6px; white-space: nowrap; line-height: 1.4;
}
.slot.ppt .via { color: var(--vision-ink); background: var(--tint-vision); }
.slot.hwp .via { color: var(--persimmon-ink); background: var(--tint-persimmon); }
.tray-foot {
  margin-top: var(--s5); padding-top: var(--s4); border-top: 1px dashed var(--line);
  display: flex; align-items: center; flex-wrap: wrap; gap: var(--s2) var(--s3); font-size: 0.84rem; color: var(--ink-soft);
}
.tray-foot svg { width: 18px; height: 18px; }
.tray-foot .arrow-down { color: var(--persimmon); flex: none; }
.tray-foot b { color: var(--ink); }

/* ---------------- problem duo ---------------- */
.problem { background: var(--paper-2); border-block: 1px solid var(--line); }
.duo { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s5); }
.pcard {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(var(--s5), 2.5vw, var(--s7)); box-shadow: var(--shadow-sm);
}
.pcard .ptag {
  display: inline-flex; align-items: center; gap: var(--s2);
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700;
  padding: var(--s1) var(--s3); border-radius: 999px; margin-bottom: var(--s4); line-height: 1.5;
}
.pcard.ppt .ptag { color: var(--vision-ink); background: var(--tint-vision); }
.pcard.hwp .ptag { color: var(--persimmon-ink); background: var(--tint-persimmon); }
.pcard h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; letter-spacing: -0.01em; margin: 0 0 var(--s3); }
.pcard p { margin: 0; color: var(--ink-soft); }
.pcard .miss {
  margin-top: var(--s4); padding-top: var(--s4); border-top: 1px solid var(--line-2);
  display: flex; gap: var(--s2); align-items: flex-start; font-size: 0.9rem; color: var(--ink);
}
.pcard .miss svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: var(--persimmon); }

/* ---------------- two-engine signature ---------------- */
.engine-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s5); }
.engine {
  position: relative; border-radius: var(--radius-lg); padding: clamp(var(--s5), 3vw, var(--s7));
  border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.engine::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; }
.engine.vision::before { background: var(--vision); }
.engine.rhwp::before { background: var(--persimmon); }
.engine .ehead { display: flex; align-items: center; gap: var(--s4); margin-bottom: var(--s5); }
.engine .eic { width: 52px; height: 52px; flex: none; border-radius: 14px; display: grid; place-items: center; }
.engine.vision .eic { background: var(--tint-vision); color: var(--vision-ink); }
.engine.rhwp .eic { background: var(--tint-persimmon); color: var(--persimmon-ink); }
.engine .eic svg { width: 28px; height: 28px; }
.engine .elabel { font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; line-height: 1.2; }
.engine.vision .elabel { color: var(--vision-ink); }
.engine.rhwp .elabel { color: var(--persimmon-ink); }
.engine h3 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.35rem, 1.1rem + 1vw, 1.8rem); letter-spacing: -0.02em; margin: 4px 0 0; overflow-wrap: anywhere; }
.engine .verb { font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; }
.engine p { color: var(--ink-soft); margin: 0 0 var(--s4); }
.engine ul { list-style: none; margin: 0 0 var(--s5); padding: 0; display: grid; gap: var(--s2); }
.engine li { display: flex; gap: var(--s3); align-items: flex-start; font-size: 0.94rem; }
.engine li svg { width: 17px; height: 17px; flex: none; margin-top: 3px; }
.engine.vision li svg { color: var(--vision); }
.engine.rhwp li svg { color: var(--persimmon); }
.engine .efoot {
  display: flex; align-items: center; gap: var(--s4); flex-wrap: wrap;
  padding-top: var(--s4); border-top: 1px solid var(--line-2);
}
.stat { display: inline-flex; flex-direction: column; }
.stat .n { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; letter-spacing: -0.02em; line-height: 1; }
.engine.vision .stat .n { color: var(--vision-ink); }
.engine.rhwp .stat .n { color: var(--persimmon-ink); }
.stat .l { font-size: 0.76rem; color: var(--ink-soft); margin-top: 4px; }
.chip-link {
  display: inline-flex; align-items: center; gap: var(--s2); line-height: 1;
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700;
  padding: var(--s2) var(--s3); border-radius: 999px; border: 1px solid var(--line);
  color: var(--ink); background: var(--paper-2); transition: border-color .15s ease;
}
.chip-link:hover { border-color: var(--persimmon); text-decoration: none; }
.chip-link svg { width: 14px; height: 14px; }

.converge {
  margin-top: var(--s5); display: flex; flex-direction: column; align-items: center; text-align: center;
}
.converge .lines { width: 100%; max-width: 640px; height: 38px; color: var(--line); }
.converge .lines svg { width: 100%; height: 100%; display: block; }
.copilot-node {
  display: inline-flex; align-items: center; gap: var(--s3);
  background: var(--ink); color: var(--on-band); border-radius: 999px;
  padding: var(--s3) var(--s5); font-weight: 700; box-shadow: var(--shadow-sm);
}
.copilot-node svg { width: 20px; height: 20px; flex: none; }
.copilot-node .tag { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; color: var(--on-band-soft); }

/* ---------------- proof (before/after) ---------------- */
.demo { border: 1px solid var(--line); background: var(--card); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); overflow: hidden; }
.demo + .demo { margin-top: var(--s6); }
.demo-head { padding: clamp(var(--s5), 2.5vw, var(--s6)); border-bottom: 1px solid var(--line-2); }
.demo-head .kind {
  display: inline-block; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700;
  color: var(--persimmon-ink); background: var(--tint-persimmon);
  padding: var(--s1) var(--s3); border-radius: 999px; margin-bottom: var(--s3); line-height: 1.5;
}
.demo-head h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; letter-spacing: -0.01em; margin: 0 0 var(--s2); overflow-wrap: anywhere; }
.demo-head p { margin: 0; color: var(--ink-soft); max-width: 74ch; font-size: 0.96rem; }
.demo-grid {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: var(--s5);
  padding: clamp(var(--s5), 2.5vw, var(--s6));
}
figure { margin: 0; }
.demo-src img, .ba-card img {
  width: 100%; height: auto; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: var(--paper-2);
}
.zoom img { cursor: zoom-in; transition: box-shadow .2s ease; }
.zoom img:hover { box-shadow: var(--shadow); }
figcaption { margin-top: var(--s3); font-size: 0.86rem; color: var(--ink-soft); }
.ba { display: grid; gap: var(--s6); align-content: start; }
.ba-card { position: relative; }
.ba-tag {
  position: absolute; top: var(--s3); left: var(--s3);
  font-size: 0.74rem; font-weight: 700; padding: var(--s1) var(--s3); border-radius: 999px;
  color: var(--on-accent); line-height: 1.5; box-shadow: var(--shadow-sm);
}
.ba-card.before .ba-tag { background: var(--ink-soft); }
.ba-card.after .ba-tag { background: var(--persimmon); }
.ba-card figcaption { display: grid; gap: 4px; }
.ba-card figcaption b { font-weight: 800; }
.ba-card .fail { color: var(--persimmon-ink); }
.ba-card .ok { color: var(--vision-ink); }

/* ---------------- grounding (ink band) ---------------- */
.grounding { background: var(--ink-band); color: var(--on-band); }
.grounding .eyebrow { color: var(--persimmon-light); }
.grounding .eyebrow::before { background: var(--persimmon); }
.grounding h2.sec { color: var(--on-band); }
.grounding .sec-lead { color: var(--on-band-soft); }
.gsteps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s5); }
.gstep {
  border: 1px solid var(--band-border); border-radius: var(--radius);
  padding: var(--s5); background: var(--band-surface);
  display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: var(--s4); align-items: center;
}
.gstep .gic { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: var(--band-surface-2); color: var(--persimmon-light); }
.gstep .gic svg { width: 22px; height: 22px; }
.gstep h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.12rem; margin: 0; color: var(--on-band); }
.gstep p { grid-column: 1 / -1; margin: var(--s3) 0 0; color: var(--on-band-soft); font-size: 0.92rem; }

/* ---------------- formats + pipeline ---------------- */
.fmt-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(var(--s6), 4vw, var(--s8)); align-items: start; }
.panel-label { font-family: var(--font-mono); font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); margin: 0 0 var(--s4); }
.formats table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.formats th, .formats td { text-align: left; padding: var(--s3) var(--s3); border-bottom: 1px solid var(--line); vertical-align: middle; }
.formats thead th { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); font-weight: 700; }
.formats td .fname { font-weight: 700; }
.formats td .ext { font-family: var(--font-mono); font-size: 0.82rem; color: var(--ink-soft); }
.tag { display: inline-block; font-size: 0.74rem; font-weight: 700; padding: 4px var(--s3); border-radius: 999px; white-space: nowrap; line-height: 1.5; }
.tag.ok { color: var(--ok-ink); background: var(--ok-bg); }
.tag.plan { color: var(--ink-soft); background: var(--paper-2); border: 1px solid var(--line); }
.via-mini { font-family: var(--font-mono); font-size: 0.8rem; }
.via-mini.v { color: var(--vision-ink); }
.via-mini.h { color: var(--persimmon-ink); }

.pipeline { display: grid; gap: var(--s4); }
.pstep { display: grid; grid-template-columns: 40px minmax(0,1fr); gap: var(--s4); align-items: start; }
.pstep .pn {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 0.86rem;
  background: var(--card); border: 1px solid var(--line); color: var(--ink);
}
.pstep.k .pn { background: var(--ink); color: var(--on-band); border-color: var(--ink); }
.pstep h4 { margin: 6px 0 2px; font-size: 1rem; font-weight: 700; }
.pstep p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.pstep .split { display: flex; gap: var(--s2); flex-wrap: wrap; margin-top: var(--s2); }
.pstep .split span { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; padding: 4px var(--s2); border-radius: 6px; line-height: 1.4; }
.pstep .split .v { color: var(--vision-ink); background: var(--tint-vision); }
.pstep .split .h { color: var(--persimmon-ink); background: var(--tint-persimmon); }

/* ---------------- footer ---------------- */
footer { background: var(--paper-2); border-top: 1px solid var(--line); padding-block: var(--s8) var(--s7); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--s7); }
.foot-brand .brand { margin-bottom: var(--s4); }
.foot-brand p { color: var(--ink-soft); max-width: 52ch; font-size: 0.92rem; margin: 0 0 var(--s4); }
.foot-links { display: flex; flex-direction: column; gap: var(--s3); align-items: flex-start; }
.foot-links a { font-weight: 600; color: var(--ink); display: inline-flex; align-items: center; gap: var(--s2); }
.foot-links a:hover { color: var(--persimmon-ink); }
.foot-links a svg { width: 15px; height: 15px; flex: none; }
.foot-meta { margin-top: var(--s7); padding-top: var(--s4); border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: var(--s3) var(--s5); justify-content: space-between; color: var(--ink-soft); font-size: 0.84rem; }
.crew b { color: var(--ink); }

/* ---------------- lightbox ---------------- */
.lightbox {
  position: fixed; inset: 0; z-index: var(--z-lightbox);
  background: var(--scrim);
  display: none; align-items: center; justify-content: center; padding: var(--s5);
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 94vw; max-height: 92vh; width: auto; border-radius: var(--radius-sm); box-shadow: 0 30px 80px rgba(0,0,0,.5); }

/* ---------------- reveal ---------------- */
[data-reveal] { opacity: 0; transform: translateY(16px); }
[data-reveal].is-in { opacity: 1; transform: none; transition: opacity .55s ease, transform .55s ease; }

/* ---------------- responsive ---------------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--s7); }
  .tray { order: 2; }
  .fmt-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .duo { grid-template-columns: 1fr; }
  .engine-grid { grid-template-columns: 1fr; }
  .gsteps { grid-template-columns: 1fr; }
  .demo-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: var(--s6); }
  .brand .sub { display: none; }
  .converge .lines { display: none; }
}
@media (max-width: 460px) {
  .slot { grid-template-columns: 40px minmax(0,1fr); }
  .slot .via { grid-column: 2; justify-self: start; }
  .nav-gh span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .zoom img:hover { transform: none; }
}