:root {
  color-scheme: dark;
  /* ground: dark blue */
  --chassis: #0A1324;
  --chassis-2: #0F1B31;
  --chassis-3: #15243F;
  --hover: #1C2E4D;
  --bezel: #07101F;
  --seam: #1B2B47;
  --seam-strong: #2A3F63;
  /* text */
  --legend: #E6EDF7;
  --legend-2: #B9C6D9;
  --legend-dim: #8A9AB3;
  --muted: #8A9AB3;
  --key-ink: #06101F;
  /* screens and grid */
  --crt: #050C19;
  --crt-2: #081226;
  --grat: rgba(80, 170, 255, 0.09);
  --grat-axis: rgba(80, 170, 255, 0.2);
  --grid-line: rgba(80, 170, 255, 0.13);
  /* neon */
  --neon: #7FD8FF;
  --neon-red: #FF8A96;
  --led: #74D27E;
  --ghost: #E5C454;
  --friend: #74D27E;
  --ch: var(--neon);

  --f-legend: "Michroma", "Eurostile", "Microgramma", "Arial", sans-serif;
  --f-display: "Sofia Sans Semi Condensed", "Arial Narrow", "Segoe UI", sans-serif;
  --f-body: "Sofia Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-data: "Martian Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --gutter: clamp(16px, 4vw, 44px);
  --max: 1200px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --icon-out: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M3.5 2.5h6v6M9.5 2.5 2.5 9.5' fill='none' stroke='%23000' stroke-width='1.5' stroke-linecap='square'/%3E%3C/svg%3E");
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; scrollbar-color: var(--seam-strong) var(--chassis); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--chassis);
  color: var(--legend);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  caret-color: var(--neon);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--neon); color: var(--key-ink); }
img, video, canvas { max-width: 100%; display: block; }
a { color: inherit; text-decoration-color: var(--seam-strong); text-underline-offset: 4px; }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--legend); outline-offset: 3px; border-radius: 3px; }

.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

/* legend: the short label voice */
.label, .legend {
  font-family: var(--f-legend);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--legend-dim);
  line-height: 1.5;
}
.mono { font-family: var(--f-body); font-size: 0.9375rem; letter-spacing: 0; }
.legend-long, .status, .project-main > .kicker, .figure > .label, .screen-bar > span:first-child, #pong-status {
  font-family: var(--f-display); font-weight: 700; font-size: 1rem; letter-spacing: 0.01em; text-transform: none;
}

h1, h2, h3 {
  font-family: var(--f-display);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin: 0;
  color: var(--legend);
}

.ico-out {
  display: inline-block; width: 0.7em; height: 0.7em; margin-left: 0.35em; vertical-align: 0.02em;
  background: currentColor; -webkit-mask: var(--icon-out) center / contain no-repeat; mask: var(--icon-out) center / contain no-repeat;
}

/* ---------- keys ---------- */
.btn, .tab, .seg button, .sbtn {
  font-family: var(--f-legend);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color .16s var(--ease), color .16s var(--ease), transform .08s linear, box-shadow .16s var(--ease);
}
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.72rem;
  padding: 13px 18px; border-radius: 4px; text-decoration: none;
  color: var(--legend); background: var(--chassis-3);
  border: 1px solid var(--seam-strong);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 4px 10px -4px rgba(0,0,0,0.7);
}
.btn:hover { background: var(--hover); }
.btn:active { transform: translateY(1px); background: var(--legend); color: var(--key-ink); box-shadow: inset 0 1px 3px rgba(0,0,0,0.3); }
.btn-solid { background: var(--legend); color: var(--key-ink); border-color: var(--legend); }
.btn-solid:hover { background: #FFFFFF; }
.btn-solid:active { background: #D2D5CF; }
.led { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--led); vertical-align: 0.05em; }

/* ---------- header ---------- */
.site-head {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bezel) 92%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--seam);
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  font-family: var(--f-legend); font-size: 0.72rem; letter-spacing: 0.06em;
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 1px solid var(--legend-2); border-radius: 4px; color: var(--legend);
}
.brand-name { font-family: var(--f-display); font-weight: 700; font-size: 1.125rem; letter-spacing: 0.01em; }
.nav { display: flex; align-items: center; gap: clamp(12px, 2.6vw, 30px); }
.nav a { text-decoration: none; font-family: var(--f-legend); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-2); }
.nav a:hover { color: var(--legend); }
.nav .btn { color: var(--legend); padding: 10px 14px; }
.nav .btn:hover { background: var(--hover); color: var(--legend); }
button.btn { font-weight: 400; line-height: 1.2; }
.btn[aria-busy="true"] { cursor: progress; opacity: 0.75; }
@media (max-width: 640px) { .nav .hide-sm { display: none; } .brand-name { display: none; } }

/* ---------- hero: 3D light-cycle grid (hero-race.js) ---------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(48px, 8vw, 112px) clamp(24px, 3vw, 40px);
  /* sky: a faint cyan glow from the top, settling to near-black at the horizon.
     hero-race.js sets --horizon to where the 3D ground actually meets the sky. */
  --horizon: 45%;
  background:
    radial-gradient(ellipse 120% var(--horizon) at 50% 0%, rgba(30, 130, 150, 0.16), transparent),
    linear-gradient(180deg, #0B2D37 0%, #041A21 var(--horizon), #030E14 var(--horizon));
  background-color: #030E14;
}
.hero-race { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }
/* keeps the copy readable when lightning lights up the clouds behind it */
.hero .status, .hero h1, .hero-lead { text-shadow: 0 1px 14px rgba(1, 7, 11, 0.9); }
.hero .readout { margin-top: clamp(150px, 22vw, 300px); }
.status {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--legend-2); line-height: 1.4;
}
.status i { width: 8px; height: 8px; background: var(--led); border-radius: 50%; display: block; flex: none; }
.hero h1 {
  margin-top: 26px;
  font-size: clamp(2.6rem, 6.8vw, 5.75rem);
  font-weight: 800;
  max-width: 15ch;
  letter-spacing: -0.015em;
}
.hero h1 em { font-style: normal; color: var(--neon); }
.hero-lead { margin-top: 24px; max-width: 62ch; font-size: clamp(1.0625rem, 1.5vw, 1.25rem); color: var(--legend-2); }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-links { display: flex; gap: 22px; margin-left: 10px; flex-wrap: wrap; }
.hero-links a { font-family: var(--f-legend); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-2); }
.hero-links a:hover { color: var(--legend); }

.readout {
  margin-top: clamp(64px, 9vw, 112px);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
}
.readout > div {
  display: grid; gap: 4px; align-content: start;
  padding: 12px 14px 12px;
  background: rgba(5, 12, 25, 0.86);
  border: 1px solid rgba(127, 216, 255, 0.18);
  border-radius: 3px;
  cursor: default;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.readout > div:hover { border-color: rgba(127, 216, 255, 0.45); background: rgba(5, 12, 25, 0.95); }
.readout b {
  font-family: var(--f-data); font-weight: 500;
  font-size: clamp(1.25rem, 2.2vw, 1.625rem); line-height: 1.1;
  font-variant-numeric: tabular-nums; color: var(--legend);
}
.readout b small { font-size: max(0.75rem, 0.62em); margin-left: 4px; color: var(--legend-2); }
.readout span { color: var(--legend-2); font-size: 0.9375rem; line-height: 1.4; }
.readout .label { font-size: 0.7rem; letter-spacing: 0.05em; color: var(--legend-dim); margin-top: 4px; }
@media (max-width: 900px) { .readout { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 440px) { .readout { grid-template-columns: 1fr; } }

/* ---------- sections ---------- */
.section { padding-block: clamp(64px, 9vw, 112px); border-top: 1px solid var(--seam); }
.section-head {
  display: grid; grid-template-columns: minmax(0, 1fr); align-items: start; gap: 14px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section-head h2 { font-size: clamp(2.1rem, 4.8vw, 3.6rem); max-width: 20ch; }
.section-head p { margin: 0; max-width: 60ch; color: var(--legend-2); }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 88px); }
.prose p { margin: 0 0 1.1em; max-width: 64ch; color: var(--legend-2); }
.prose p:first-child { font-size: 1.25rem; color: var(--legend); }
.spec { margin: 0; border-top: 1px solid var(--seam-strong); align-self: start; }
.spec > div { display: grid; grid-template-columns: 9rem 1fr; gap: 16px; padding-block: 14px; border-bottom: 1px solid var(--seam); }
.spec dt { font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-dim); padding-top: 4px; }
.spec dd { margin: 0; font-size: 1rem; line-height: 1.5; }
.spec dd small { display: block; color: var(--legend-dim); font-size: 0.9rem; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }
@media (max-width: 460px) { .spec > div { grid-template-columns: 1fr; gap: 4px; } }

/* ---------- project index ---------- */
.index { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--seam-strong); }
.index li { border-bottom: 1px solid var(--seam); }
.index a {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) auto; gap: 22px; align-items: center;
  padding: 20px 12px; text-decoration: none;
  transition: background-color .18s var(--ease);
}
.index a:hover { background: var(--chassis-2); }
.index a:hover strong { color: var(--neon); }
.index strong { font-family: var(--f-display); font-weight: 700; font-size: 1.375rem; line-height: 1.15; }
.index span { color: var(--legend-2); }
.index em { font-style: normal; font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--legend-dim); white-space: nowrap; }
@media (max-width: 860px) { .index a { grid-template-columns: 1fr; gap: 6px; } }

/* ---------- project ---------- */
.project { padding-block: clamp(64px, 9vw, 104px); }
.project + .project { border-top: 1px solid var(--seam); }
.project-grid { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); }
.rail { align-self: start; position: sticky; top: 92px; display: grid; gap: 18px; }
.rail dl { margin: 0; display: grid; gap: 16px; }
.rail dt { font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-dim); }
.rail dd { margin: 4px 0 0; font-size: 0.96875rem; line-height: 1.45; color: var(--legend); }
.rail .links { display: grid; gap: 10px; padding-top: 18px; border-top: 1px solid var(--seam); }
.rail .links a { font-weight: 700; font-size: 0.96875rem; color: var(--legend); text-decoration: none; }
.rail .links a::after {
  content: ""; display: inline-block; width: 0.62em; height: 0.62em; margin-left: 0.4em; vertical-align: 0.04em;
  background: var(--ch); -webkit-mask: var(--icon-out) center / contain no-repeat; mask: var(--icon-out) center / contain no-repeat;
}
.rail .links a:hover { color: var(--ch); }
.project-main { display: flex; flex-direction: column; min-width: 0; }
.project-main > * { order: 2; }
.project-main > h3 { order: 0; font-size: clamp(2.2rem, 4.6vw, 3.5rem); }
.project-main > .kicker { order: 1; margin-top: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; color: var(--legend-2); font-size: 1.125rem; }
.project .summary { margin: 20px 0 0; max-width: 62ch; font-size: 1.1875rem; color: var(--legend-2); }
.project .story { margin: 14px 0 0; max-width: 62ch; color: var(--legend-2); }
.note { margin: 14px 0 0; max-width: 78ch; font-size: 0.9375rem; color: var(--legend-dim); }
@media (max-width: 900px) {
  .project-grid { grid-template-columns: 1fr; }
  .rail { position: static; order: 2; }
  .rail dl { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
}

/* ---------- screens ---------- */
.screen {
  position: relative;
  margin-top: 36px;
  padding: 8px;
  background: var(--bezel);
  border-radius: 12px;
  color: var(--legend);
  box-shadow: inset 0 0 0 1px var(--seam), 0 14px 24px -14px rgba(0, 0, 0, 0.85);
}
.screen-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 6px 6px 12px 10px;
  font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-dim);
}
.screen-bar > span:first-child { color: var(--legend-2); font-size: 0.9375rem; }
.screen-bar > span:first-child::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--ch); margin-right: 10px; vertical-align: 0.05em; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tab {
  font-size: 0.7rem;
  color: var(--legend-2); background: var(--chassis-3);
  border: 1px solid var(--seam-strong);
  padding: 8px 12px 7px; border-radius: 3px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
  display: inline-flex; align-items: center; gap: 8px;
}
.tab:hover { color: var(--legend); background: var(--hover); }
.tab[aria-selected="true"] { color: var(--key-ink); background: var(--legend); border-color: var(--legend); box-shadow: none; }
.stage { position: relative; aspect-ratio: 16 / 9; background: var(--crt); overflow: hidden; border-radius: 6px; }
.stage::after { content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.8), inset 0 5px 14px rgba(0,0,0,0.45); }
.stage > img, .stage > video, .stage > canvas { width: 100%; height: 100%; object-fit: cover; }
.stage canvas { cursor: crosshair; touch-action: manipulation; }
.stage-play > img { position: absolute; inset: 0; opacity: 0.55; }
.stage-play > iframe { display: block; width: 100%; height: 100%; border: 0; }
.play-cover { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 16px; text-align: center; }
@media (max-width: 640px) { .stage-play { aspect-ratio: 4 / 5; } }
.stage-pong { aspect-ratio: 800 / 644; max-width: 780px; margin-inline: auto; }
.panel[hidden] { display: none !important; }
.screen-foot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; justify-content: space-between;
  padding: 14px 10px 8px; min-height: 46px;
  font-size: 0.9375rem; color: var(--legend-2);
}
.screen-foot strong { color: var(--legend); font-weight: 700; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; }
.seg { display: inline-flex; gap: 4px; }
.controls:has(> .reel) { flex: 1 1 100%; min-width: 0; }
.seg.reel { flex-wrap: wrap; min-width: 0; }
.seg.reel button { white-space: nowrap; }
.seg button {
  font-size: 0.7rem; padding: 9px 12px 8px;
  background: var(--chassis-3); color: var(--legend-2);
  border: 1px solid var(--seam-strong); border-radius: 3px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.seg button:hover { color: var(--legend); background: var(--hover); }
.seg button[aria-pressed="true"] { background: var(--legend); color: var(--key-ink); border-color: var(--legend); box-shadow: none; }
.ctl { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--legend-dim); }
.ctl output { font-family: var(--f-data); font-size: 0.8125rem; letter-spacing: 0; text-transform: none; color: var(--legend); min-width: 4.5ch; font-variant-numeric: tabular-nums; }
.ctl input[type="range"] { width: clamp(90px, 16vw, 160px); accent-color: var(--ch); }
.ctl input[type="range"]:disabled { opacity: 0.4; }
.sbtn {
  font-size: 0.7rem; padding: 9px 12px 8px;
  background: var(--chassis-3); color: var(--legend);
  border: 1px solid var(--seam-strong); border-radius: 3px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.sbtn:hover { background: var(--hover); }
.sbtn:active { background: var(--legend); color: var(--key-ink); transform: translateY(1px); }
.hint { font-size: 0.875rem; color: var(--legend-dim); }
#pong-log { font-family: var(--f-data); font-size: 0.75rem; color: var(--legend-2); }


/* ---------- project body ---------- */
.body-grid { margin-top: 48px; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 56px); }
.built { margin: 0; padding: 0; list-style: none; display: grid; gap: 20px; }
.built li { display: grid; gap: 4px; padding-left: 22px; position: relative; }
.built li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 8px; height: 8px; border-radius: 1px; background: var(--ch); }
.built b { font-weight: 700; color: var(--legend); font-size: 1.0625rem; }
.built span { color: var(--legend-2); font-size: 1rem; }
.metrics { margin: 0; align-self: start; background-color: var(--crt);
  background-image:
    linear-gradient(90deg, var(--grat) 1px, transparent 1px),
    linear-gradient(0deg, var(--grat) 1px, transparent 1px);
  background-size: 10% 100%, 100% 12.5%;
  border-radius: 3px; padding: 6px 18px; box-shadow: inset 0 0 0 1px var(--seam), inset 0 5px 12px rgba(0,0,0,0.5); }
.metrics > div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-block: 13px; border-bottom: 1px dashed rgba(127, 216, 255, 0.16); }
.metrics > div:last-child { border-bottom: 0; }
.metrics dt { color: var(--legend-2); font-size: 0.9375rem; line-height: 1.35; }
.metrics dd {
  margin: 0; text-align: right; white-space: nowrap;
  font-family: var(--f-data); font-weight: 500; font-size: 1.0625rem; color: var(--ch);
  font-variant-numeric: tabular-nums;
}
.metrics dd small { font-size: max(0.75rem, 0.75em); color: var(--legend-dim); margin-left: 3px; }
@media (max-width: 900px) { .body-grid { grid-template-columns: 1fr; } }

.figure { margin: 56px 0 0; }
.figure figcaption { margin-top: 14px; color: var(--legend-dim); font-size: 0.9375rem; max-width: 70ch; }
.figure > .label { margin-bottom: 16px; display: block; color: var(--legend); font-size: 1.125rem; }

/* pipeline */
.pipe { display: grid; grid-template-columns: 1.25fr auto 1.1fr auto 1fr auto 1.05fr; align-items: stretch; }
.pipe .node { background: var(--chassis-2); border: 1px solid var(--seam); padding: 14px 16px; border-radius: 3px; display: grid; gap: 6px; align-content: start; }
.pipe .node b { font-family: var(--f-data); font-size: 0.8125rem; font-weight: 500; color: var(--ch); }
.pipe .node span { font-size: 0.9375rem; color: var(--legend-2); line-height: 1.4; }
.pipe .stack { display: grid; gap: 8px; }
.pipe .arrow { display: grid; place-items: center; padding-inline: 8px; color: var(--legend-dim); }
.pipe .arrow svg { width: 22px; height: 12px; }
@media (max-width: 860px) {
  .pipe { grid-template-columns: 1fr; }
  .pipe .arrow { padding-block: 6px; }
  .pipe .arrow svg { transform: rotate(90deg); }
}

/* wire format: bus decode */
.wire-scroll { overflow-x: auto; padding: 18px; background: var(--crt); border-radius: 8px; box-shadow: inset 0 0 0 1px var(--seam), inset 0 5px 12px rgba(0,0,0,0.5); }
.wire {
  display: flex; flex-wrap: wrap; gap: 6px 3px; width: 100%;
  filter: drop-shadow(1px 0 0 var(--seam-strong)) drop-shadow(-1px 0 0 var(--seam-strong)) drop-shadow(0 1px 0 var(--seam-strong)) drop-shadow(0 -1px 0 var(--seam-strong));
}
.wire > div {
  --hx: 10px;
  flex: 1 0 auto;
  padding: 12px calc(var(--hx) + 8px) 10px;
  display: grid; gap: 2px; align-content: center; text-align: center;
  background: var(--crt-2);
  clip-path: polygon(var(--hx) 0, calc(100% - var(--hx)) 0, 100% 50%, calc(100% - var(--hx)) 100%, var(--hx) 100%, 0 50%);
}
.wire .hdr { background: color-mix(in srgb, var(--ch) 20%, var(--crt)); }
.wire b { font-family: var(--f-data); font-size: 0.78rem; font-weight: 500; color: var(--legend); line-height: 1.25; white-space: nowrap; }
.wire span { font-family: var(--f-data); font-size: 0.75rem; color: var(--legend-dim); line-height: 1.25; white-space: nowrap; }
.encode { margin-top: 14px; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(440px, 100%), 1fr)); gap: 10px; }
.encode code { display: block; font-family: var(--f-data); font-size: 0.8125rem; padding: 12px 14px; border: 1px solid var(--seam); border-radius: 6px; background: var(--chassis-2); color: var(--legend-2); overflow-x: auto; white-space: nowrap; }
.encode code b { color: var(--ch); font-weight: 500; }
@media (max-width: 700px) { .encode { grid-template-columns: 1fr; } }

/* chart screen */
.chart-wrap {
  position: relative; padding: 14px 14px 8px;
  background-color: var(--crt);
  background-image:
    linear-gradient(90deg, var(--grat) 1px, transparent 1px),
    linear-gradient(0deg, var(--grat) 1px, transparent 1px);
  background-size: 10% 100%, 100% 12.5%;
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px var(--seam), inset 0 5px 12px rgba(0,0,0,0.5);
}
.chart-wrap svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart-tip {
  position: absolute; pointer-events: none; transform: translate(-50%, -100%);
  background: var(--legend); color: var(--key-ink); padding: 8px 12px; border-radius: 3px;
  font-family: var(--f-data); font-size: 0.75rem; white-space: nowrap; line-height: 1.4;
  box-shadow: 0 8px 20px -6px rgba(0,0,0,0.7);
}
.chart-tip[hidden] { display: none; }
details.table-view { margin-top: 12px; }
details.table-view summary { cursor: pointer; font-family: var(--f-legend); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--legend-2); }
.tv-scroll { max-height: 260px; overflow: auto; margin-top: 10px; border: 1px solid var(--seam); border-radius: 6px; }
.tv-scroll table { border-collapse: collapse; width: 100%; font-family: var(--f-data); font-size: 0.8125rem; font-variant-numeric: tabular-nums; }
.tv-scroll th, .tv-scroll td { padding: 7px 14px; border-bottom: 1px solid var(--seam); text-align: left; }
.tv-scroll td:last-child, .tv-scroll th:last-child { text-align: right; }
.tv-scroll th { position: sticky; top: 0; background: var(--chassis-2); color: var(--legend-dim); font-weight: 500; }

/* ---------- contact ---------- */
.contact { padding-block: clamp(72px, 10vw, 128px); border-top: 1px solid var(--seam); background: var(--chassis-2); }
.contact h2 { font-size: clamp(2.4rem, 6vw, 4.8rem); max-width: 16ch; }
.contact p { max-width: 58ch; color: var(--legend-2); margin: 22px 0 0; font-size: 1.1875rem; }
.contact .hero-actions { margin-top: 32px; }
.foot { padding-block: 26px 44px; background: var(--chassis-2); border-top: 1px solid var(--seam); color: var(--legend-dim); font-size: 0.875rem; }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

/* résumé status toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 40; transform: translateX(-50%);
  width: min(560px, calc(100% - 32px));
  padding: 14px 18px; border-radius: 6px;
  background: var(--chassis-3); color: var(--legend);
  border: 1px solid var(--seam-strong);
  box-shadow: 0 16px 32px -16px rgba(0, 0, 0, 0.9);
  font-size: 0.9375rem; line-height: 1.45;
}
.toast[hidden] { display: none; }