/* Layout concept: the site is one engineering drawing sheet. A teal "general arrangement" hero,
   then detail callouts A/B/C (Build, Teach, Coach) on a whiteprint grid, closed by a drawing title block.
   Light = ink on machined-aluminum paper. Dark = pale ink on deep scrub teal. */
/* Palette: surgical-scrub teal for the bands, safety orange for the signal, machined-aluminum paper. */
:root {
  --paper: #eceeea;
  --paper-2: #dfe4df;
  --ink: #0f2321;
  --ink-soft: #4f625e;
  --accent: #c8461a;
  --on-accent: #ffffff;
  --signal: #ff6b2c;
  --on-signal: #0f2321;
  --rule: rgba(15, 35, 33, 0.17);
  --grid: rgba(15, 71, 67, 0.055);
  --band: #0e4743;
  --band-fg: #eef5f2;
  --band-soft: rgba(238, 245, 242, 0.74);
  --band-rule: rgba(238, 245, 242, 0.28);
  --band-grid: rgba(255, 255, 255, 0.06);
  --code-bg: #0f2321;
  --code-fg: #e3eeea;
  --code-dim: #87a29b;
  --code-hi: #8fe3d4;
  --plate-a: #0f2321;
  --plate-b: #0e4743;
  --plate-c: #c8461a;
  --plate-d: #6d7f7a;
  --steel: #a8b3b0;

  --f-display: "Big Shoulders Display", "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  --f-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --t-xs: 0.75rem;
  --t-sm: 0.875rem;
  --t-md: 1.0625rem;
  --t-lg: 1.25rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0b1716; --paper-2: #10201e; --ink: #e4ede9; --ink-soft: #98ada7;
    --accent: #ff7a3d; --on-accent: #0b1716; --rule: rgba(205, 235, 226, 0.15); --grid: rgba(205, 235, 226, 0.045);
    --band: #0d3f3b; --code-bg: #050e0d; --plate-a: #d9e4e0; --plate-b: #2f8a80; --plate-c: #ff7a3d; --plate-d: #6f8681; --steel: #5d6b68;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0b1716; --paper-2: #10201e; --ink: #e4ede9; --ink-soft: #98ada7;
  --accent: #ff7a3d; --on-accent: #0b1716; --rule: rgba(205, 235, 226, 0.15); --grid: rgba(205, 235, 226, 0.045);
  --band: #0d3f3b; --code-bg: #050e0d; --plate-a: #d9e4e0; --plate-b: #2f8a80; --plate-c: #ff7a3d; --plate-d: #6f8681; --steel: #5d6b68;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--ink);
  font: 400 var(--t-md)/1.6 var(--f-body);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--signal); color: var(--on-signal); padding: 8px 14px; font-weight: 600; }
.skip:focus { top: 12px; }

.label { font: 500 var(--t-xs)/1.3 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); }
.label-gap { margin-top: 2rem; }
.fine { font: 400 var(--t-xs)/1.5 var(--f-mono); color: var(--ink-soft); }
.display { font: 800 clamp(2.6rem, 7vw, 5.6rem)/0.9 var(--f-display); text-transform: uppercase; letter-spacing: -0.005em; }
.display-sm { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.hide-sm { }
@media (max-width: 640px) { .hide-sm { display: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em; min-height: 44px; padding: 0 1.15rem;
  font: 600 var(--t-sm)/1 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none;
  border: 1.5px solid currentColor; border-radius: 2px; background: transparent; cursor: pointer;
  transition: background-color .18s, color .18s, transform .18s;
}
.btn:hover { transform: translateY(-1px); }
.btn-small { min-height: 36px; padding: 0 0.85rem; font-size: var(--t-xs); }
.btn-solid { background: var(--signal); color: var(--on-signal); border-color: var(--signal); }
.btn-solid:hover { background: transparent; color: inherit; border-color: currentColor; }
.btn-ghost:hover { background: currentColor; }
.btn-ghost:hover > * , .btn-ghost:hover { }
.hero .btn-ghost:hover, .contact .btn-ghost:hover { background: var(--band-fg); color: var(--band); border-color: var(--band-fg); }
.tag-pdf { font-size: 0.65rem; padding: 2px 4px; border: 1px solid currentColor; border-radius: 2px; }
.chip { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; padding: 5px 7px; border: 1px solid var(--rule); color: var(--accent); }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  display: flex; align-items: center; gap: 1.5rem; height: 60px; padding-inline: var(--gutter);
  background: var(--paper); border-bottom: 1px solid var(--rule);
}
.mark { display: inline-flex; align-items: center; gap: 6px; font: 900 1.6rem/1 var(--f-display); text-decoration: none; color: var(--accent); }
.mark i { width: 18px; height: 2px; background: currentColor; }
.nav { display: flex; gap: 1.6rem; margin-left: auto; }
.nav a { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none; padding: 8px 0; border-bottom: 1.5px solid transparent; }
.nav a:hover { border-color: var(--accent); color: var(--accent); }
.topbar-tools { display: flex; align-items: center; gap: 0.6rem; }
.theme-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 10px; border: 1px solid var(--rule); background: transparent; cursor: pointer; border-radius: 2px; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; }
.theme-swatch { width: 14px; height: 14px; border-radius: 50%; background: linear-gradient(90deg, var(--ink) 50%, var(--paper) 50%); border: 1px solid var(--ink); }
@media (max-width: 860px) { .nav { display: none; } .topbar-tools { margin-left: auto; } }
@media (max-width: 420px) { .theme-label { display: none; } }

/* ---------- hero ---------- */
.hero {
  background-color: var(--band); color: var(--band-fg);
  background-image: linear-gradient(var(--band-grid) 1px, transparent 1px), linear-gradient(90deg, var(--band-grid) 1px, transparent 1px);
  background-size: 32px 32px;
}
.hero-inner { max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding: clamp(18px, 3vw, 32px) var(--gutter) clamp(28px, 4vw, 48px); display: grid; gap: clamp(20px, 3vw, 32px); }
.titleblock-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 18px; font: 500 0.6875rem/1 var(--f-mono); letter-spacing: 0.16em; color: var(--band-soft); padding-bottom: 12px; border-bottom: 1px solid var(--band-rule); }
.hero-head { display: grid; gap: clamp(20px, 3vw, 40px); align-items: end; }
.hero-name { font: 900 clamp(4.6rem, 27vw, 13.75rem)/0.84 var(--f-display); text-transform: uppercase; letter-spacing: -0.01em; display: grid; }
.hero-name .ln { display: block; }
.hero-name .ln:last-child { color: transparent; -webkit-text-stroke: 2px var(--band-fg); }
@supports not (-webkit-text-stroke: 2px white) { .hero-name .ln:last-child { color: var(--band-fg); } }
.hero-side { display: grid; gap: 1rem; max-width: 34rem; min-width: 0; }
.hero-role { font: 600 clamp(1.25rem, 2.2vw, 1.6rem)/1.25 var(--f-body); }
.hero-lede { color: var(--band-soft); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 0.4rem; }
@media (min-width: 1100px) { .hero-head { grid-template-columns: auto 1fr; } .hero-side { padding-bottom: 10px; } }

.dim { display: flex; align-items: center; gap: 10px; font: 500 0.6875rem/1 var(--f-mono); letter-spacing: 0.14em; color: var(--band-soft); }
.dim-line { flex: 1; height: 1px; background: var(--band-rule); position: relative; min-width: 12px; }
.dim-end { padding-inline: 6px; border-inline: 1px solid var(--band-rule); line-height: 18px; }
.dim-label { white-space: nowrap; }
@media (max-width: 520px) { .dim-label { white-space: normal; text-align: center; max-width: 12rem; } }

.triptych { display: flex; gap: 6px; height: clamp(300px, 46vw, 520px); }
.panel {
  position: relative; flex: 1 1 0; min-width: 0; padding: 0; border: 1px solid var(--band-rule); background: var(--band); overflow: hidden; cursor: pointer; text-align: left;
  transition: flex-grow .55s cubic-bezier(.2,.7,.2,1);
}
.panel[aria-pressed="true"] { flex-grow: 3.4; border-color: var(--band-fg); }
.panel img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.1); transition: filter .5s, transform .8s; transform: scale(1.04); }
.panel::after { content: ""; position: absolute; inset: 0; background: var(--band); mix-blend-mode: multiply; opacity: 0.7; transition: opacity .5s; }
.panel[aria-pressed="true"] img { filter: none; transform: scale(1); }
.panel[aria-pressed="true"]::after { opacity: 0; }
.panel:hover::after { opacity: 0.45; }
.panel[aria-pressed="true"]:hover::after { opacity: 0; }
.panel-tag, .panel-cap { position: absolute; z-index: 1; color: var(--band-fg); }
.panel-tag { top: 12px; left: 12px; display: inline-flex; align-items: center; gap: 10px; font: 800 1.6rem/1 var(--f-display); text-transform: uppercase; letter-spacing: .02em; text-shadow: 0 1px 12px rgba(0,0,0,.35); white-space: nowrap; }
.panel-tag b { display: grid; place-items: center; width: 30px; height: 30px; border: 1.5px solid currentColor; border-radius: 50%; font: 600 0.8rem/1 var(--f-mono); }
.panel-cap { left: 0; right: 0; bottom: 0; padding: 40px 14px 12px; font: 500 var(--t-sm)/1.4 var(--f-mono); background: linear-gradient(transparent, rgba(4, 22, 20, .85)); opacity: 0; transform: translateY(8px); transition: opacity .4s .15s, transform .4s .15s; }
.panel[aria-pressed="true"] .panel-cap { opacity: 1; transform: none; }
@media (max-width: 700px) {
  .triptych { height: 340px; gap: 4px; }
  .panel[aria-pressed="false"] .panel-tag { writing-mode: vertical-rl; flex-direction: column; font-size: 1.3rem; }
  .panel[aria-pressed="false"] .panel-tag b { writing-mode: horizontal-tb; }
}

/* ---------- bill of materials ---------- */
.bom { padding-block: clamp(40px, 6vw, 72px) 0; display: grid; gap: 14px; }
.bom-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.bom-table th { text-align: left; font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); padding: 10px 12px 10px 0; border-bottom: 1.5px solid var(--ink); }
.bom-table td { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: baseline; }
.bom-table td:last-child { font: 400 var(--t-xs)/1.4 var(--f-mono); color: var(--ink-soft); white-space: nowrap; text-align: right; padding-right: 0; }
.bom-table th:last-child { text-align: right; padding-right: 0; }
.bom-table .qty { width: 1%; white-space: nowrap; font: 800 clamp(2rem, 4vw, 2.8rem)/1 var(--f-display); color: var(--accent); padding-right: clamp(14px, 3vw, 36px); }
.bom-table .qty small { font: 500 0.7rem/1 var(--f-mono); letter-spacing: .1em; margin-left: 4px; text-transform: uppercase; }

/* ---------- section heads ---------- */
.sec-head { display: grid; gap: 14px; max-width: 46rem; }
.sec-lede { color: var(--ink-soft); max-width: 36rem; }

/* ---------- career ---------- */
.career { padding-block: clamp(64px, 9vw, 120px) clamp(48px, 7vw, 96px); display: grid; gap: 28px; }
.filters, .presets { display: flex; flex-wrap: wrap; gap: 8px; }
.filters button, .presets button {
  min-height: 38px; padding: 0 14px; border: 1px solid var(--rule); background: var(--paper); border-radius: 999px; cursor: pointer;
  font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase;
}
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.filters button:hover, .presets button:hover { border-color: var(--accent); }

.gantt { --label-w: 250px; display: grid; gap: 4px; }
.gantt-axis, .gantt-row { display: grid; grid-template-columns: var(--label-w) minmax(0, 1fr); column-gap: 18px; align-items: center; }
.gantt-axis { height: 28px; border-bottom: 1.5px solid var(--ink); }
.gantt-axis .ticks { position: relative; height: 100%; }
.gantt-axis .tick { position: absolute; bottom: 0; transform: translateX(-50%); font: 500 0.6875rem/1 var(--f-mono); color: var(--ink-soft); padding-bottom: 8px; }
.gantt-axis .tick:first-child { transform: none; }
.gantt-axis .tick:first-child::after { left: 0; }
.gantt-axis .tick::after { content: ""; position: absolute; left: 50%; bottom: -1px; width: 1px; height: 6px; background: var(--ink); }
.gantt-rows { display: grid; }
.gantt-row { min-height: 64px; padding: 8px 0; width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--rule); text-align: left; cursor: pointer; transition: opacity .25s; }
.gantt-row .g-label { display: grid; gap: 2px; min-width: 0; }
.gantt-row .g-co { font: 600 var(--t-md)/1.2 var(--f-body); }
.gantt-row .g-role { font: 400 var(--t-xs)/1.3 var(--f-mono); color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gantt-row .g-track { position: relative; height: 26px; background-image: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px calc(100% / 18.8)); }
.gantt-row .g-bar { position: absolute; top: 3px; bottom: 3px; border: 1.5px solid var(--accent); background: repeating-linear-gradient(135deg, transparent 0 5px, var(--rule) 5px 6px); display: flex; align-items: center; padding-inline: 8px; font: 500 0.6875rem/1 var(--f-mono); color: var(--accent); white-space: nowrap; overflow: visible; transition: background-color .25s, color .25s; }
.gantt-row .g-bar.end-right span { position: absolute; right: calc(100% + 8px); }
.gantt-row:hover .g-co { color: var(--accent); }
.gantt-row[aria-selected="true"] .g-bar { background: var(--accent); color: var(--on-accent); }
.gantt-row[aria-selected="true"] .g-bar.end-right { color: var(--accent); }
.gantt-row[aria-selected="true"] .g-bar.end-right span { color: var(--accent); }
.gantt-row[aria-selected="true"] .g-co::before { content: "▸ "; color: var(--accent); }
.gantt-row.dim { opacity: 0.28; }
.gantt .fine { margin-top: 8px; }
@media (max-width: 760px) {
  .gantt { --label-w: 0px; }
  .gantt-axis, .gantt-row { grid-template-columns: minmax(0, 1fr); column-gap: 0; }
  .gantt-axis > span:first-child { display: none; }
  .gantt-row { row-gap: 8px; }
  .gantt-axis .tick.minor { display: none; }
}

.role-card { display: grid; gap: 22px 48px; padding: clamp(20px, 3vw, 36px); background: var(--paper); border: 1.5px solid var(--ink); position: relative; }
.role-card::before { content: attr(data-index); position: absolute; top: -1px; right: -1px; font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; padding: 6px 8px; background: var(--ink); color: var(--paper); }
.role-card h3 { font: 800 clamp(2rem, 4.4vw, 3.2rem)/0.95 var(--f-display); text-transform: uppercase; }
.role-meta { display: grid; gap: 10px; align-content: start; }
.role-title { font-weight: 600; font-size: var(--t-lg); line-height: 1.3; }
.role-when { font: 500 var(--t-xs)/1.4 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.role-body { display: grid; gap: 14px; min-width: 0; }
.role-body ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.role-body li { padding-left: 22px; position: relative; }
.role-body li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 12px; height: 1.5px; background: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags span { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; padding: 6px 8px; border: 1px solid var(--rule); }
@media (min-width: 900px) { .role-card { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); } }

/* ---------- thesis band ---------- */
.thesis { background: var(--band); color: var(--band-fg); }
.thesis-inner { padding-block: clamp(56px, 8vw, 110px); display: grid; gap: clamp(32px, 5vw, 56px); }
.thesis-quote { font: 800 clamp(2.4rem, 7.4vw, 6.4rem)/0.92 var(--f-display); text-transform: uppercase; max-width: 15ch; text-wrap: balance; }
.thesis-quote em { font-style: normal; color: var(--signal); }
.principles { margin: 0; padding: 0; list-style: none; display: grid; gap: 24px; counter-reset: p; }
.principles li { counter-increment: p; padding-top: 16px; border-top: 1px solid var(--band-rule); color: var(--band-soft); }
.principles li::before { content: "0" counter(p); display: block; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .14em; margin-bottom: 12px; color: var(--signal); }
.principles b { display: block; color: var(--band-fg); font-weight: 600; margin-bottom: 4px; }
@media (min-width: 820px) { .principles { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; } }

/* ---------- detail sections ---------- */
.detail { padding-block: clamp(64px, 9vw, 120px); display: grid; gap: clamp(28px, 4vw, 48px); }
.detail-teach { display: block; background: var(--paper-2); border-block: 1px solid var(--rule); }
.detail-teach > .wrap { display: grid; gap: clamp(28px, 4vw, 48px); }
.detail-head { display: flex; align-items: center; gap: clamp(16px, 3vw, 28px); }
.detail-head > div { display: grid; gap: 12px; min-width: 0; }
.callout { flex: none; display: grid; place-items: center; width: clamp(64px, 9vw, 104px); aspect-ratio: 1; border: 2px solid var(--accent); border-radius: 50%; font: 800 clamp(2rem, 4.5vw, 3.4rem)/1 var(--f-display); color: var(--accent); position: relative; }
.callout::after { content: ""; position: absolute; left: 50%; top: 100%; width: 2px; height: 22px; background: var(--accent); }

.detail-grid { display: grid; gap: clamp(28px, 4vw, 56px); align-items: start; }
.detail-copy { display: grid; gap: 18px; max-width: 34rem; min-width: 0; }
@media (min-width: 960px) { .detail-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); } }

.photo { position: relative; display: block; width: 100%; padding: 0; border: 1px solid var(--rule); background: var(--paper-2); cursor: zoom-in; overflow: hidden; }
.photo img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; transition: transform .6s; }
.photo:hover img { transform: scale(1.03); }
.photo-zoom { position: absolute; right: 10px; bottom: 10px; font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; background: var(--paper); color: var(--ink); padding: 6px 8px; opacity: 0; transition: opacity .2s; }
.photo:hover .photo-zoom, .photo:focus-visible .photo-zoom { opacity: 1; }

.instrument { display: grid; gap: 16px; padding: clamp(16px, 2.4vw, 26px); background: var(--paper); border: 1.5px solid var(--ink); min-width: 0; }
.inst-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.inst-top .label { color: var(--ink); }
#robot-canvas { width: 100%; max-width: 420px; height: auto; aspect-ratio: 1; margin-inline: auto; touch-action: none; cursor: crosshair; }
.err-canvas { width: 100%; height: 64px; }
.readouts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--rule); }
.readouts div { padding: 10px 12px; display: grid; gap: 4px; }
.readouts div + div { border-left: 1px solid var(--rule); }
.readouts span { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.readouts output { font: 800 clamp(1.6rem, 3.6vw, 2.2rem)/1 var(--f-display); font-variant-numeric: tabular-nums; color: var(--accent); }
.controls { display: grid; gap: 8px; }
.controls label { display: flex; justify-content: space-between; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; }
.controls label output { color: var(--accent); font-variant-numeric: tabular-nums; }
.controls input[type="range"] { width: 100%; accent-color: var(--accent); margin: 0 0 10px; }
.code { margin: 0; padding: 14px 16px; background: var(--code-bg); color: var(--code-fg); font: 400 0.8rem/1.6 var(--f-mono); overflow-x: auto; border-radius: 2px; }
.code .c-k { color: var(--signal); }
.code .c-c { color: var(--code-dim); }
.code .c-c span { color: var(--code-hi); }
.inst-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }

/* ---------- teach ---------- */
.teach-grid { display: grid; gap: clamp(24px, 4vw, 48px); align-items: center; }
.teach-copy { display: grid; gap: 16px; max-width: 34rem; }
.photo-wide img { aspect-ratio: 16 / 10; object-position: 45% 30%; }
@media (min-width: 960px) { .teach-grid { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); } }

.process { display: grid; gap: 0; border: 1.5px solid var(--ink); background: var(--paper); }
.process-steps { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)) auto; border-bottom: 1.5px solid var(--ink); }
.process-steps button { display: grid; gap: 6px; justify-items: start; padding: 16px 14px; background: transparent; border: 0; border-right: 1px solid var(--rule); cursor: pointer; text-align: left; font: 800 clamp(1.15rem, 2vw, 1.6rem)/1 var(--f-display); text-transform: uppercase; transition: background-color .2s, color .2s; }
.process-steps button span { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; color: var(--ink-soft); }
.process-steps button:hover { background: var(--paper-2); }
.process-steps button[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.process-steps button[aria-selected="true"] span { color: inherit; }
.process-loop { display: grid; place-items: center; padding: 0 16px; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); white-space: nowrap; }
.process-panel { display: grid; gap: 20px 40px; padding: clamp(18px, 3vw, 32px); }
.process-panel > div { display: grid; gap: 8px; min-width: 0; }
.pp-text { font-size: var(--t-lg); line-height: 1.45; }
@media (min-width: 760px) { .process-panel { grid-template-columns: 1fr 1fr; } .process-panel > div + div { border-left: 1px solid var(--rule); padding-left: 40px; } }
@media (max-width: 760px) {
  .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .process-steps button { border-bottom: 1px solid var(--rule); }
  .process-steps button:nth-child(3n) { border-right: 0; }
  .process-loop { grid-column: 1 / -1; padding: 10px; }
}

/* ---------- coach ---------- */
.coach-grid { display: grid; gap: clamp(28px, 4vw, 56px); align-items: start; }
.coach-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.coach-photos { align-items: start; }
.coach-photos .photo img { height: auto; aspect-ratio: 3 / 4; }
.coach-copy { display: grid; gap: 18px; min-width: 0; }
.coach-copy > p { max-width: 34rem; }
@media (min-width: 960px) { .coach-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); } .coach-photos { position: sticky; top: 90px; } }

.vol-total { display: flex; align-items: end; gap: 14px; }
.vol-total output { font: 900 clamp(3.2rem, 8vw, 5.4rem)/0.85 var(--f-display); color: var(--accent); font-variant-numeric: tabular-nums; }
.vol-total span { font: 500 var(--t-xs)/1.35 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-soft); padding-bottom: 4px; }
.vol-chart { height: 180px; display: flex; align-items: end; gap: 6px; border-bottom: 1.5px solid var(--ink); padding-bottom: 2px; background-image: linear-gradient(var(--rule) 1px, transparent 1px); background-size: 100% 25%; }
.vol-set { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column-reverse; gap: 1px; height: 100%; justify-content: flex-start; position: relative; }
.vol-set i { display: block; flex: 0 0 auto; background: var(--accent); border-radius: 1px; transform-origin: bottom; animation: rep-in .35s both; }
.vol-set b { position: absolute; top: 0; left: 0; right: 0; text-align: center; font: 500 0.625rem/1 var(--f-mono); color: var(--ink-soft); }
@keyframes rep-in { from { transform: scaleY(0); } }
.vol-inputs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.stepper { display: grid; gap: 6px; min-width: 0; }
.stepper label { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.stepper > div { display: grid; grid-template-columns: 34px minmax(0, 1fr) 34px; border: 1px solid var(--ink); }
.stepper button { border: 0; background: var(--paper-2); cursor: pointer; font: 600 1.1rem/1 var(--f-mono); min-height: 42px; }
.stepper button:hover { background: var(--accent); color: var(--on-accent); }
.stepper input { width: 100%; min-width: 0; border: 0; border-inline: 1px solid var(--rule); background: var(--paper); color: var(--ink); text-align: center; font: 600 1rem/1 var(--f-mono); font-variant-numeric: tabular-nums; -moz-appearance: textfield; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* ---------- foundation ---------- */
.foundation { padding-block: clamp(48px, 7vw, 96px); display: grid; gap: clamp(40px, 6vw, 80px); border-top: 1px solid var(--rule); }
.found-col { display: grid; gap: 14px; align-content: start; min-width: 0; }
.edu { margin: 10px 0 0; display: grid; }
.edu div { padding: 14px 0; border-bottom: 1px solid var(--rule); display: grid; gap: 2px; }
.edu div:first-child { border-top: 1.5px solid var(--ink); }
.edu dt { font-weight: 600; }
.edu dd { margin: 0; color: var(--ink-soft); font-size: var(--t-sm); }
.toolchips { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.toolchips li { font: 500 var(--t-xs)/1 var(--f-mono); padding: 7px 9px; border: 1px solid var(--rule); background: var(--paper); }
.ahead > p { color: var(--ink-soft); max-width: 32rem; }
.ahead-list { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.ahead-list li { display: grid; gap: 4px; padding: 16px 18px; border: 1px dashed var(--accent); background: var(--paper); }
.ahead-list b { font: 800 1.5rem/1 var(--f-display); text-transform: uppercase; color: var(--accent); }
.ahead-list span { font-size: var(--t-sm); color: var(--ink-soft); }
@media (min-width: 900px) { .foundation { grid-template-columns: 1fr 1fr; } }

/* ---------- contact ---------- */
.contact { background: var(--band); color: var(--band-fg); background-image: linear-gradient(var(--band-grid) 1px, transparent 1px), linear-gradient(90deg, var(--band-grid) 1px, transparent 1px); background-size: 32px 32px; }
.contact .label, .contact .fine { color: var(--band-soft); }
.contact-inner { max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding: clamp(64px, 10vw, 140px) var(--gutter); display: grid; gap: 22px; justify-items: start; }
.contact-title { font: 900 clamp(3.4rem, 12vw, 10.5rem)/0.82 var(--f-display); text-transform: uppercase; max-width: 9ch; }
.contact-lede { color: var(--band-soft); max-width: 36rem; }
.email-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; padding-block: 18px; border-block: 1px solid var(--band-rule); width: 100%; }
.email { font: 600 clamp(1.1rem, 3.6vw, 2.2rem)/1.2 var(--f-body); text-decoration: none; overflow-wrap: anywhere; border-bottom: 2px solid var(--signal); user-select: all; min-width: 0; }
.email:hover { color: var(--signal); }

/* ---------- footer title block ---------- */
.titleblock { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border-top: 1.5px solid var(--ink); background: var(--paper); padding-bottom: env(safe-area-inset-bottom, 0px); }
.titleblock div { display: grid; gap: 6px; padding: 14px var(--gutter) 16px 16px; border-right: 1px solid var(--rule); min-width: 0; }
.titleblock div:first-child { padding-left: var(--gutter); }
.titleblock div:last-child { border-right: 0; }
.titleblock span { font: 500 0.625rem/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.titleblock b { font: 600 var(--t-sm)/1.2 var(--f-mono); }
@media (max-width: 860px) {
  .titleblock { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .titleblock div { padding-left: var(--gutter); border-bottom: 1px solid var(--rule); }
  .titleblock div:nth-child(2n) { border-right: 0; }
}

/* ---------- lightbox ---------- */
.lightbox { border: 0; padding: 0; background: transparent; max-width: min(1200px, 94vw); max-height: 92vh; overflow: visible; }
.lightbox::backdrop { background: rgba(4, 18, 17, 0.9); }
.lightbox figure { margin: 0; display: grid; gap: 10px; }
.lightbox img { max-height: 82vh; width: auto; margin-inline: auto; border: 1px solid rgba(242, 245, 255, .35); }
.lightbox figcaption { color: #f2f5ff; font: 500 var(--t-xs)/1.4 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; text-align: center; }
.lb-close { position: absolute; right: 0; top: -46px; color: #f2f5ff; }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero-name .ln { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
  .hero-name .ln:last-child { animation-delay: .08s; }
  .hero-side, .hero-open, .hero-cta, .dim { animation: fade .8s .25s both; }
  .triptych .panel { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
  .triptych .panel:nth-child(2) { animation-delay: .08s; }
  .triptych .panel:nth-child(3) { animation-delay: .16s; }
}
@keyframes rise { from { transform: translateY(24px); opacity: .001; } }
@keyframes fade { from { opacity: .001; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- round 2: rover, bar builder ---------- */
.build-grid { align-items: center; }
.build-grid .photo img { aspect-ratio: 16 / 10; }
.build-grid .rover { grid-column: 1 / -1; }
.tracks, .lifts { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--ink); width: fit-content; max-width: 100%; }
.tracks button, .lifts button { min-height: 38px; padding: 0 14px; border: 0; border-right: 1px solid var(--rule); background: transparent; cursor: pointer; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; }
.tracks button:last-child, .lifts button:last-child { border-right: 0; }
.tracks button:hover, .lifts button:hover { background: var(--paper-2); }
.tracks button[aria-pressed="true"], .lifts button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.floor { position: relative; border: 1px solid var(--rule); background: var(--paper-2); }
#rover-canvas { display: block; width: 100%; height: auto; aspect-ratio: 8 / 5; touch-action: none; cursor: crosshair; }
.floor-hint { position: absolute; inset: 0; display: grid; place-items: center; padding: 20px; text-align: center; pointer-events: none; font: 500 var(--t-sm)/1.5 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.floor-hint[hidden] { display: none; }
.rover .code { font-size: 0.74rem; }
.rover .err-canvas { width: 100%; height: 72px; display: block; }
.rover-side { display: grid; gap: 16px; align-content: start; min-width: 0; }
.readouts-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.readouts-4 output { font-size: clamp(1.3rem, 2.6vw, 1.9rem); }
.controls-3 { gap: 4px; }
.controls-3 > div { display: grid; gap: 8px; }
.toggle { display: inline-flex; align-items: center; gap: 8px; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; cursor: pointer; min-height: 36px; }
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; }
@media (min-width: 1100px) {
  .rover { grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); column-gap: 28px; }
  .rover > .inst-top, .rover > .tracks, .rover > .inst-foot, .rover > .fine { grid-column: 1 / -1; }
  .rover > .floor { grid-column: 1; grid-row: 3; }
  .rover > .err-canvas { grid-column: 1; grid-row: 4; }
  .rover > .rover-side { grid-column: 2; grid-row: 3 / span 2; }
}
@media (max-width: 560px) {
  .readouts-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .readouts-4 div:nth-child(3) { border-left: 0; }
  .readouts-4 div:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .tracks button, .lifts button { padding: 0 10px; }
}

.bar-inputs { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); align-items: end; }
.e1rm { display: grid; gap: 6px; padding: 0 0 2px 12px; border-left: 1px solid var(--rule); min-width: 0; }
.e1rm .label { font-size: 0.6875rem; }
.e1rm output { font: 800 2.2rem/0.9 var(--f-display); font-variant-numeric: tabular-nums; }
.bar-readout { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 6px 18px; padding-top: 12px; border-top: 1px solid var(--rule); }
.bar-weight { display: flex; align-items: end; gap: 12px; }
.bar-weight output { font: 900 clamp(3.4rem, 8vw, 5.4rem)/0.85 var(--f-display); color: var(--accent); font-variant-numeric: tabular-nums; }
.bar-weight span { font: 500 var(--t-xs)/1.3 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); padding-bottom: 4px; }
.bar-reps { font: 600 var(--t-sm)/1.3 var(--f-mono); padding-bottom: 4px; }
.barbell { width: 100%; height: auto; display: block; overflow: visible; }
.bb-shaft { fill: var(--steel); }
.bb-knurl { fill: none; stroke: var(--ink-soft); stroke-width: 1; stroke-dasharray: 2 3; opacity: .6; }
.bb-collar { fill: var(--ink); }
.bb-plate rect { stroke: var(--paper); stroke-width: 1; }
.bb-p45 rect { fill: var(--plate-a); }
.bb-p35 rect { fill: var(--plate-b); }
.bb-p25 rect { fill: var(--plate-c); }
.bb-p10 rect, .bb-p5 rect, .bb-p2h rect { fill: var(--plate-d); }
.bb-label { font: 700 12px var(--f-mono); fill: var(--paper); text-anchor: middle; dominant-baseline: central; }
.bb-plate.in-r { animation: plate-r .42s cubic-bezier(.2,.8,.2,1) both; }
.bb-plate.in-l { animation: plate-l .42s cubic-bezier(.2,.8,.2,1) both; }
@keyframes plate-r { from { transform: translateX(160px); opacity: 0; } }
@keyframes plate-l { from { transform: translateX(-160px); opacity: 0; } }
.plates-text { font: 500 var(--t-sm)/1.4 var(--f-mono); text-align: center; }
.zones { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); border: 1px solid var(--rule); }
.zones button { display: grid; gap: 4px; padding: 8px 4px; border: 0; border-right: 1px solid var(--rule); background: transparent; cursor: pointer; font: 500 0.6875rem/1 var(--f-mono); font-variant-numeric: tabular-nums; color: var(--ink-soft); }
.zones button:last-child { border-right: 0; }
.zones button b { font: 800 1rem/1 var(--f-display); color: var(--ink); }
.zones button:hover { background: var(--paper-2); }
.zones button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.zones button[aria-pressed="true"] b { color: inherit; }
@media (max-width: 560px) { .zones { grid-template-columns: repeat(4, minmax(0, 1fr)); } .zones button:nth-child(4) { border-right: 0; } .zones button:nth-child(n+5) { border-top: 1px solid var(--rule); } .bar-inputs { grid-template-columns: 1fr 1fr; } .e1rm { grid-column: 1 / -1; border-left: 0; padding-left: 0; } }

/* ---------- AI for schools & teams ---------- */
.ai { background-color: var(--band); color: var(--band-fg); background-image: linear-gradient(var(--band-grid) 1px, transparent 1px), linear-gradient(90deg, var(--band-grid) 1px, transparent 1px); background-size: 32px 32px; }
.ai .label, .ai .fine { color: var(--band-soft); }
.ai-inner { padding-block: clamp(64px, 9vw, 120px); display: grid; gap: clamp(32px, 5vw, 56px); }
.ai-head { display: grid; gap: 20px; justify-items: start; max-width: 50rem; }
.ai-new { display: inline-block; margin-right: 10px; padding: 4px 7px; background: var(--signal); color: var(--on-signal); letter-spacing: .12em; }
.ai-title { font: 900 clamp(3.2rem, 10vw, 8.4rem)/0.84 var(--f-display); text-transform: uppercase; }
.ai-title span { color: transparent; -webkit-text-stroke: 2px var(--band-fg); }
@supports not (-webkit-text-stroke: 2px white) { .ai-title span { color: var(--signal); } }
.ai-lede { color: var(--band-soft); font-size: var(--t-lg); line-height: 1.5; max-width: 40rem; }
.ai .btn-solid:hover { color: var(--band-fg); }
.ai-tabs { display: grid; gap: 0; border: 1px solid var(--band-rule); }
.ai-switch { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--band-rule); }
.ai-switch button { min-height: 56px; padding: 0 18px; border: 0; background: transparent; color: var(--band-soft); cursor: pointer; text-align: left; font: 800 clamp(1.3rem, 2.6vw, 1.9rem)/1 var(--f-display); text-transform: uppercase; transition: background-color .2s, color .2s; }
.ai-switch button + button { border-left: 1px solid var(--band-rule); }
.ai-switch button:hover { color: var(--band-fg); }
.ai-switch button[aria-selected="true"] { background: var(--band-fg); color: var(--band); }
.ai-list { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.ai-list li { display: grid; gap: 8px; align-content: start; padding: clamp(18px, 2.4vw, 28px); border-right: 1px solid var(--band-rule); border-bottom: 1px solid var(--band-rule); margin: 0 -1px -1px 0; }
.ai-list b { font-weight: 600; font-size: var(--t-lg); color: var(--band-fg); }
.ai-list span { color: var(--band-soft); font-size: var(--t-sm); line-height: 1.55; }
.ai-panel { overflow: hidden; animation: fade .35s both; }
.ai-steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); position: relative; }
.ai-steps::before { content: ""; position: absolute; left: 0; right: 0; top: 14px; height: 1px; background: var(--band-rule); }
.ai-steps li { position: relative; display: grid; align-content: start; gap: 6px; padding-right: 16px; color: var(--band-soft); font-size: var(--t-sm); line-height: 1.45; }
.ai-steps span { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 50%; background: var(--band); border: 1.5px solid var(--signal); color: var(--signal); font: 600 0.6875rem/1 var(--f-mono); margin-bottom: 8px; position: relative; }
.ai-steps b { font: 800 1.6rem/1 var(--f-display); text-transform: uppercase; color: var(--band-fg); }
@media (max-width: 760px) {
  .ai-steps { grid-template-columns: 1fr; gap: 18px; }
  .ai-steps::before { left: 14px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .ai-steps li { grid-template-columns: 29px 1fr; column-gap: 14px; padding-right: 0; }
  .ai-steps span { grid-row: 1 / span 2; margin: 0; }
}
.ai-why { display: grid; gap: 14px; padding-top: 24px; border-top: 1px solid var(--band-rule); }
.ai-why ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px 36px; }
.ai-why li { padding-left: 24px; position: relative; color: var(--band-fg); }
.ai-why li::before { content: "+"; position: absolute; left: 0; top: -1px; color: var(--signal); font: 600 1.1rem/1.5 var(--f-mono); }
@media (min-width: 900px) { .ai-why ul { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.ahead-link { color: var(--accent); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }
.ahead-link:hover { color: var(--ink); }

/* ---------- business page (ai.html) ---------- */
.biz-mark { gap: 8px; }
.biz-mark small { font: 600 0.8125rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink); }
.biz-label { color: var(--band-soft); }
.biz-hero-grid { display: grid; gap: clamp(28px, 4vw, 56px); align-items: start; }
.biz-hero .ai-title { text-box: trim-both cap alphabetic; }
.biz-hero-copy { display: grid; gap: 22px; justify-items: start; min-width: 0; }
.biz-hero .ai-title { font-size: clamp(3.4rem, 11vw, 8rem); }
.biz-hero-photo { margin: 0; display: grid; gap: 10px; min-width: 0; }
.biz-hero-photo img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: 44% 30%; border: 1px solid var(--band-rule); }
.biz-hero-photo figcaption { display: flex; gap: 12px; font: 500 var(--t-xs)/1.4 var(--f-mono); color: var(--band-soft); }
.biz-hero-photo figcaption span { color: var(--signal); white-space: nowrap; }
@media (max-width: 999px) {
  .biz-hero .ai-title span { display: block; }
  .biz-hero-photo { order: 1; }
  .biz-hero-copy { order: 2; }
}
@media (min-width: 1000px) {
  .biz-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); row-gap: clamp(36px, 3.4vw, 52px); align-items: stretch; }
  .biz-hero .hero-inner { container-type: inline-size; }
  .biz-hero .ai-title { grid-column: 1 / -1; font-size: calc(100cqi / 11.12); white-space: nowrap; }
  .biz-hero-copy { grid-template-rows: auto 1fr auto; align-content: stretch; }
  .biz-hero-copy .hero-facts { align-self: end; }
  .biz-hero .ai-lede { font-size: clamp(1.2rem, 1.55vw, 1.5rem); max-width: 34ch; }
  .biz-hero-photo { grid-template-rows: minmax(0, 1fr) auto; }
  .biz-hero-frame { position: relative; }
  .biz-hero-frame::before { content: ""; display: block; padding-top: 62.5%; }
  .biz-hero-frame img { position: absolute; inset: 0; height: 100%; aspect-ratio: auto; }
}
.anchor { display: block; position: relative; top: -72px; height: 0; }

.biz-gaps, .biz-process, .biz-offers, .biz-faq { padding-block: clamp(64px, 9vw, 112px); display: grid; gap: clamp(28px, 4vw, 44px); }
.gap-list { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); counter-reset: g; border-top: 1.5px solid var(--ink); }
.gap-list li { counter-increment: g; display: grid; gap: 8px; align-content: start; padding: 22px 22px 22px 0; border-bottom: 1px solid var(--rule); }
.gap-list li::before { content: "✕ 0" counter(g); font: 600 var(--t-xs)/1 var(--f-mono); letter-spacing: .12em; color: var(--accent); }
.gap-list b { font-weight: 600; font-size: var(--t-lg); line-height: 1.3; }
.gap-list span { color: var(--ink-soft); font-size: var(--t-sm); }

.biz-aud-head h2 { color: var(--band-fg); }

.stepper-x { border: 1.5px solid var(--ink); background: var(--paper); }
.sx-rail { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-bottom: 1.5px solid var(--ink); }
.sx-rail button { display: grid; gap: 6px; justify-items: start; padding: 18px 16px 22px; background: transparent; border: 0; border-right: 1px solid var(--rule); cursor: pointer; text-align: left; font: 800 clamp(1.2rem, 2.4vw, 1.8rem)/1 var(--f-display); text-transform: uppercase; color: var(--ink-soft); transition: color .2s, background-color .2s; }
.sx-rail button:last-of-type { border-right: 0; }
.sx-rail button span { font: 500 0.6875rem/1 var(--f-mono); letter-spacing: .12em; }
.sx-rail button:hover { background: var(--paper-2); color: var(--ink); }
.sx-rail button.done { color: var(--ink); }
.sx-rail button[aria-selected="true"] { color: var(--accent); }
.sx-progress { position: absolute; left: 0; bottom: -1.5px; height: 4px; width: calc((var(--p, 0) * 80% + 20%)); background: var(--accent); transition: width .45s cubic-bezier(.2,.7,.2,1); }
.sx-panel { display: grid; gap: 20px 40px; padding: clamp(18px, 3vw, 32px); }
.sx-panel > div { display: grid; gap: 10px; align-content: start; min-width: 0; }
.sx-get { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.sx-get li { padding-left: 22px; position: relative; }
.sx-get li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--f-mono); }
@media (min-width: 760px) { .sx-panel { grid-template-columns: 1.1fr 1fr; } .sx-panel > div + div { border-left: 1px solid var(--rule); padding-left: 40px; } }
@media (max-width: 640px) { .sx-rail button { padding: 14px 8px 18px; font-size: 1rem; } }

.offers { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 16px; }
.offer { display: grid; gap: 12px; align-content: start; padding: clamp(20px, 2.6vw, 28px); border: 1px solid var(--rule); background: var(--paper); }
.offer-main { border: 1.5px solid var(--ink); }
.offer-tag { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.offer h3 { font: 800 clamp(1.8rem, 3vw, 2.4rem)/0.95 var(--f-display); text-transform: uppercase; }
.offer p { color: var(--ink-soft); }
.offer .offer-fit { margin-top: 6px; padding-top: 12px; border-top: 1px dashed var(--rule); font: 500 var(--t-xs)/1.4 var(--f-mono); color: var(--ink); }

.biz-who { background: var(--paper-2); border-block: 1px solid var(--rule); }
.biz-who-grid { padding-block: clamp(56px, 8vw, 104px); display: grid; gap: clamp(28px, 4vw, 56px); align-items: center; }
.biz-who-photo { margin: 0; min-width: 0; }
.biz-who-photo img { width: 100%; height: auto; object-position: 30% 50%; aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--rule); }
.biz-who-copy { display: grid; gap: 16px; justify-items: start; max-width: 36rem; min-width: 0; }
.text-link { color: var(--accent); font: 600 var(--t-sm)/1 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; text-underline-offset: 4px; }
@media (min-width: 900px) { .biz-who-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); } }

.faq { display: grid; border-top: 1.5px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; padding: 20px 0; font-weight: 600; font-size: var(--t-lg); line-height: 1.3; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 500 1.4rem/1 var(--f-mono); color: var(--accent); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--ink-soft); max-width: 44rem; }
.faq { overflow: hidden; } .faq summary::after { flex: none; }
.hero-open { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: baseline; font: 500 var(--t-xs)/1.5 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--band-fg); padding-top: 12px; border-top: 1px solid var(--band-rule); }
.hero-open span { color: var(--on-signal); background: var(--signal); padding: 3px 6px; letter-spacing: .12em; }
.hero-id { display: flex; align-items: flex-end; gap: clamp(14px, 1.6vw, 20px); }
.hero-portrait { margin: 0; flex: none; width: clamp(96px, 8vw, 124px); border: 0; background: none; }
.hero-portrait .photo-zoom { right: 6px; bottom: 6px; font-size: 0.5625rem; padding: 4px 5px; }
.hero-portrait img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 5 !important; object-fit: cover; object-position: 50% 18%; border: 1px solid var(--band-rule); }
.hero-badge { display: grid; gap: 6px; padding-bottom: 2px; font: 500 var(--t-xs)/1.3 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--band-soft); }
.hero-badge b { font-weight: 600; color: var(--band-fg); }
.hero-badge .hb-fig { color: var(--signal); }
.biz-who-photo img.portrait { aspect-ratio: 4 / 5; object-position: 50% 22%; max-width: 440px; justify-self: center; }
.biz-who-photo:has(.portrait) { display: grid; justify-items: center; }
.portrait-frame { position: relative; width: calc(100% - 18px); max-width: 420px; margin: 0 18px 18px 0; isolation: isolate; }
.portrait-frame::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; z-index: -1; background: linear-gradient(150deg, var(--accent), color-mix(in srgb, var(--accent) 35%, transparent)); }
.portrait-frame::after { content: ""; position: absolute; inset: -10px auto auto -10px; width: 56px; height: 56px; border-top: 2px solid var(--ink); border-left: 2px solid var(--ink); pointer-events: none; }
.biz-who-photo .portrait-frame img.portrait { display: block; max-width: none; border: 0; box-shadow: 0 24px 48px -28px rgba(0, 0, 0, .55); }
.portrait-tag { position: absolute; left: 0; bottom: 18px; display: flex; gap: 8px; padding: 8px 12px; background: var(--paper); color: var(--ink); font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; }
.portrait-tag b { color: var(--accent); font-weight: 500; }
img[data-zoom] { cursor: zoom-in; transition: filter .2s; }
img[data-zoom]:hover { filter: brightness(1.06); }
img[data-zoom]:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.ahead-promo { display: grid; margin-top: 14px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); text-decoration: none; overflow: hidden; }
.ahead-promo img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: 55% 35%; display: block; transition: transform .4s ease; }
.ahead-promo span { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; padding: 12px 16px; font-size: var(--t-sm); color: var(--ink-soft); border-top: 1px solid var(--rule); }
.ahead-promo b { font: 800 1.25rem/1 var(--f-display); text-transform: uppercase; color: var(--accent); }
.ahead-promo i { font-style: normal; color: var(--accent); margin-left: auto; }
.ahead-promo:hover img { transform: scale(1.03); }
.ahead-promo:hover b { color: var(--ink); }
.projects { padding-block: clamp(56px, 8vw, 104px); display: grid; gap: clamp(28px, 4vw, 44px); border-top: 1px solid var(--rule); }
.sec-lede { color: var(--ink-soft); max-width: 36rem; }
.proj-grid { display: grid; gap: clamp(16px, 2vw, 24px); }
@media (min-width: 900px) { .proj-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.proj { display: grid; grid-template-rows: auto 1fr; border: 1px solid var(--rule); background: var(--paper); min-width: 0; }
.proj-shot { border: 0; border-bottom: 1px solid var(--rule); }
.proj-shot img { aspect-ratio: 16 / 10; object-position: 0 0; }
.proj-body { display: grid; gap: 12px; align-content: start; padding: 18px 20px 22px; }
.proj-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 10px; }
.proj-top .chip { white-space: nowrap; }
.proj-top h3 { font: 800 1.6rem/1 var(--f-display); text-transform: uppercase; }
.proj-body p { font-size: var(--t-sm); color: var(--ink-soft); }
.biz-kids { padding-block: clamp(64px, 9vw, 112px); }
.kids-grid { display: grid; gap: clamp(28px, 4vw, 56px); align-items: center; }
@media (min-width: 960px) { .kids-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); } }
.kids-copy { display: grid; gap: 18px; min-width: 0; }
.kids-list { margin: 6px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); border-top: 1.5px solid var(--ink); }
.kids-list li { display: grid; gap: 6px; align-content: start; padding: 16px 16px 16px 0; border-bottom: 1px solid var(--rule); }
.kids-list b { font-weight: 600; }
.kids-list span { font-size: var(--t-sm); color: var(--ink-soft); line-height: 1.55; }
.kids-fit { font: 500 var(--t-xs)/1.5 var(--f-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.kids-photo { margin: 0; display: grid; gap: 10px; min-width: 0; }
.kids-photo img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border: 1px solid var(--rule); }
.kids-photo figcaption { display: flex; gap: 12px; font: 500 var(--t-xs)/1.4 var(--f-mono); color: var(--ink-soft); }
.kids-photo figcaption span { color: var(--accent); white-space: nowrap; }
.concepts { display: grid; gap: clamp(20px, 3vw, 32px); padding-top: clamp(16px, 3vw, 32px); border-top: 1px solid var(--rule); }
.concepts-head { display: grid; gap: 10px; max-width: 60ch; }
.concepts-head p:last-child { margin: 0; color: var(--ink-soft); }
.concepts-title { margin: 0; font: 900 clamp(1.9rem, 4vw, 3rem)/0.95 var(--f-display); text-transform: uppercase; }
.concepts-grid { margin: 0; padding: 0; list-style: none; display: grid; gap: clamp(16px, 2vw, 24px); }
@media (min-width: 720px) { .concepts-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.concept { display: grid; gap: 10px; min-width: 0; }
.concept img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border: 1px solid var(--rule); }
.concept p { margin: 0; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; font: 500 var(--t-xs)/1.4 var(--f-mono); color: var(--ink-soft); }
.concept p span { color: var(--accent); }
.concept p b { font: 700 1rem/1.2 var(--f-body); color: var(--ink); }
.offers-photo { margin: 0; display: grid; gap: 10px; min-width: 0; }
.offers-photo img { width: 100%; height: auto; aspect-ratio: 21 / 9; object-fit: cover; object-position: 50% 6%; border: 1px solid var(--rule); }
@media (max-width: 700px) { .offers-photo img { aspect-ratio: 4 / 3; } }
.offers-photo figcaption { display: flex; gap: 12px; font: 500 var(--t-xs)/1.4 var(--f-mono); color: var(--ink-soft); }
.offers-photo figcaption span { color: var(--accent); white-space: nowrap; }
.mark-word { position: relative; display: block; width: clamp(150px, 15vw, 200px); aspect-ratio: 419 / 86; flex: none; }
.mark-word .wm { position: absolute; inset: 0; -webkit-mask: center / contain no-repeat; mask: center / contain no-repeat; }
.mark-word .wm-t { background: var(--ink); -webkit-mask-image: url(images/wordmark-text.png); mask-image: url(images/wordmark-text.png); transition: background .2s; }
.mark-word .wm-a { background: var(--accent); -webkit-mask-image: url(images/wordmark-accent.png); mask-image: url(images/wordmark-accent.png); }
.mark-word:hover .wm-t { background: var(--accent); }
.mark-gta { width: clamp(150px, 15vw, 196px); aspect-ratio: 828 / 135; }
.mark-gta .wm-t { -webkit-mask-image: url(images/gta-text.png); mask-image: url(images/gta-text.png); }
.mark-gta .wm-a { -webkit-mask-image: url(images/gta-accent.png); mask-image: url(images/gta-accent.png); }
@media (max-width: 420px) { .mark-gta { width: 132px; } }
.hero-open { max-width: 34rem; }
@media (min-width: 1100px) {
  .hero-head { row-gap: clamp(18px, 2vw, 28px); }
  .hero-name { grid-column: 1; grid-row: 1; font-size: min(13.75rem, 15.5vw); align-self: start; text-box: trim-both cap alphabetic; }
  .hero-side { grid-column: 2; grid-row: 1; align-self: stretch; align-content: space-between; padding-bottom: 0; }
  .hero-head > .hero-cta { grid-column: 1; grid-row: 2; align-self: end; margin-top: 0; }
  .hero-head > .hero-open { grid-column: 2; grid-row: 2; align-self: end; }
}
/* Student-first business page */
.enroll-pill { display: inline-flex; align-items: center; gap: 8px; }
.enroll-pill i { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 0 currentColor; animation: enroll-pulse 1.8s ease-out infinite; }
.enroll-pill-plain { color: var(--signal); letter-spacing: .14em; }
@keyframes enroll-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, currentColor 60%, transparent); } 100% { box-shadow: 0 0 0 9px transparent; } }
@media (prefers-reduced-motion: reduce) { .enroll-pill i { animation: none; } }
.hero-facts { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); width: 100%; border-block: 1px solid var(--band-rule); }
.hero-facts li { display: grid; gap: 4px; padding: 12px 14px 12px 0; }
.hero-facts li + li { border-left: 1px solid var(--band-rule); padding-left: 14px; }
.hero-facts span { font: 500 var(--t-xs)/1.2 var(--f-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--signal); }
.hero-facts b { font-weight: 600; color: var(--band-fg); }
@media (max-width: 520px) { .hero-facts { grid-template-columns: 1fr; } .hero-facts li + li { border-left: 0; padding-left: 0; border-top: 1px solid var(--band-rule); } }
.biz-kids { display: grid; gap: clamp(28px, 4vw, 48px); }
.gd-steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr)); border: 1px solid var(--rule); background: var(--paper); }
.gd-steps li { display: grid; gap: 6px; align-content: start; padding: 18px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); margin: 0 -1px -1px 0; }
.gd-steps span { font: 600 var(--t-xs)/1 var(--f-mono); color: var(--accent); letter-spacing: .1em; }
.gd-steps b { font: 800 1.5rem/1 var(--f-display); text-transform: uppercase; }
.gd-steps p { font-size: var(--t-sm); color: var(--ink-soft); line-height: 1.5; }
.enroll-inner { padding-block: clamp(56px, 8vw, 96px); display: grid; gap: clamp(20px, 3vw, 40px); align-items: end; }
@media (min-width: 900px) { .enroll-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
.enroll-copy { display: grid; gap: 20px; justify-items: start; color: var(--band-soft); font-size: var(--t-lg); line-height: 1.5; max-width: 36rem; }
.topbar .btn-solid.btn-small { white-space: nowrap; }

/* ---------- Greg Teaches AI inquiry form ---------- */
.biz-contact .contact-inner { gap: clamp(36px, 5vw, 64px); align-items: start; justify-items: stretch; }
.contact-intro { display: grid; gap: 22px; justify-items: start; min-width: 0; }
.biz-contact .contact-title { font-size: clamp(3.2rem, 9vw, 7rem); }
.biz-contact .email { font-size: clamp(1rem, 2vw, 1.25rem); }
@media (min-width: 1000px) { .biz-contact .contact-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); } }
.inquiry { display: grid; gap: 18px; width: 100%; min-width: 0; padding: clamp(20px, 3vw, 36px); background: rgba(0, 0, 0, .16); border: 1px solid var(--band-rule); }
.inquiry .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.inq-row { display: grid; gap: 18px; }
@media (min-width: 560px) { .inq-row { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: 7px; min-width: 0; }
.field > span, .inq-topic legend { font: 500 var(--t-xs)/1.2 var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--band-soft); }
.field em { font-style: normal; opacity: .7; text-transform: none; letter-spacing: .02em; }
.field input, .field select, .field textarea { width: 100%; min-width: 0; font: 400 1rem/1.4 var(--f-body); color: var(--band-fg); background: rgba(255, 255, 255, .06); border: 1px solid var(--band-rule); border-radius: 0; padding: 12px 14px; }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--band-soft) 50%), linear-gradient(135deg, var(--band-soft) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 36px; }
.field select option { color: #10201e; }
.field textarea { resize: vertical; min-height: 110px; }
.field input::placeholder, .field textarea::placeholder { color: var(--band-soft); opacity: .7; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--signal); outline-offset: 0; border-color: transparent; }
.inq-topic { margin: 0; padding: 0; border: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.inq-topic legend { margin-bottom: 9px; padding: 0; }
.inq-topic label { position: relative; cursor: pointer; }
.inq-topic input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.inq-topic span { display: block; padding: 9px 14px; border: 1px solid var(--band-rule); font: 500 var(--t-xs)/1.2 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--band-fg); transition: background .15s, color .15s; }
.inq-topic input:checked + span { background: var(--signal); border-color: var(--signal); color: #10201e; }
.inq-topic input:focus-visible + span { outline: 2px solid var(--band-fg); outline-offset: 2px; }
.inq-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.inq-status { margin: 0; color: var(--band-fg) !important; }