/* ─────────────────────────────────────────────
   Spotter — styles
   Palette: chalk + iron, with weight-plate colours
   marking equipment (IWF plate colours).
   ───────────────────────────────────────────── */

@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/barlow-400.woff2') format('woff2'); }
@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/barlow-500.woff2') format('woff2'); }
@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 600; font-display: swap; src: url('fonts/barlow-600.woff2') format('woff2'); }
@font-face { font-family: 'Barlow Condensed'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/barlow-condensed-500.woff2') format('woff2'); }
@font-face { font-family: 'Barlow Condensed'; font-style: normal; font-weight: 600; font-display: swap; src: url('fonts/barlow-condensed-600.woff2') format('woff2'); }
@font-face { font-family: 'Barlow Condensed'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/barlow-condensed-700.woff2') format('woff2'); }

:root {
  --bg: #F1F3F2;
  --surface: #FFFFFF;
  --surface-2: #E6E9E7;
  --ink: #15181B;
  --ink-2: #444B52;
  --muted: #69717A;
  --line: #D6DAD8;
  --line-strong: #B8BDBA;
  --on-ink: #FFFFFF;
  --demo-bg: #1A1D20;
  --demo-ink: #E8EBE9;
  --demo-line: #3A4046;
  --focus: #2458C6;

  /* plate colours = equipment */
  --plate-machine: #2458C6;   /* 20 kg blue   */
  --plate-cable: #D9A300;     /* 15 kg yellow */
  --plate-dumbbell: #1F8A55;  /* 10 kg green  */
  --plate-barbell: #CC3328;   /* 25 kg red    */
  --plate-body: #FFFFFF;      /*  5 kg white  */
  --plate-body-edge: #9AA19D;

  --warn-bg: #FFF4D6;
  --warn-ink: #6B4E00;

  --font-body: 'Barlow', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Barlow Condensed', 'Arial Narrow', ui-sans-serif, system-ui, sans-serif;

  --radius: 10px;
  --radius-sm: 6px;
  --gutter: clamp(16px, 4vw, 32px);
  --measure: 68ch;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F1113;
    --surface: #171A1D;
    --surface-2: #22262A;
    --ink: #ECEEEC;
    --ink-2: #BAC0C4;
    --muted: #8B9298;
    --line: #2B3035;
    --line-strong: #40464C;
    --on-ink: #0F1113;
    --demo-bg: #0B0D0E;
    --demo-line: #30363B;
    --focus: #7EA2F5;
    --plate-machine: #5D8DF2;
    --plate-cable: #F2C230;
    --plate-dumbbell: #3DBA7A;
    --plate-barbell: #F0584C;
    --plate-body: #ECEEEC;
    --plate-body-edge: #ECEEEC;
    --warn-bg: #2E2710;
    --warn-ink: #F2D27A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0F1113;
  --surface: #171A1D;
  --surface-2: #22262A;
  --ink: #ECEEEC;
  --ink-2: #BAC0C4;
  --muted: #8B9298;
  --line: #2B3035;
  --line-strong: #40464C;
  --on-ink: #0F1113;
  --demo-bg: #0B0D0E;
  --demo-line: #30363B;
  --focus: #7EA2F5;
  --plate-machine: #5D8DF2;
  --plate-cable: #F2C230;
  --plate-dumbbell: #3DBA7A;
  --plate-barbell: #F0584C;
  --plate-body: #ECEEEC;
  --plate-body-edge: #ECEEEC;
  --warn-bg: #2E2710;
  --warn-ink: #F2D27A;
  color-scheme: dark;
}

/* ───────── base ───────── */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.02; margin: 0; text-wrap: balance; letter-spacing: 0.005em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: 100%; max-width: 1120px; margin-inline: auto; padding-inline: var(--gutter); }
.wrap-narrow { max-width: 860px; }

.eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ───────── header ───────── */
.top {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 58px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { display: inline-flex; align-items: center; gap: 2px; height: 22px; }
.brand-mark i { display: block; width: 5px; border-radius: 2px; }
.brand-mark i:nth-child(1) { height: 22px; background: var(--plate-barbell); }
.brand-mark i:nth-child(2) { height: 19px; background: var(--plate-machine); }
.brand-mark i:nth-child(3) { height: 15px; background: var(--plate-cable); }
.brand-mark i:nth-child(4) { height: 11px; background: var(--plate-dumbbell); }
.brand-mark b { display: block; width: 10px; height: 3px; background: var(--ink); border-radius: 2px; }
.brand-word { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; letter-spacing: 0.16em; text-transform: uppercase; }
.nav { display: flex; gap: 4px; }
.nav a {
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  white-space: nowrap;
}
.nav a:hover { color: var(--ink); background: var(--surface-2); }
.nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--ink); border-radius: 0; }

main { padding-block: 28px 64px; min-height: 60vh; }

/* ───────── home ───────── */
.hero { display: grid; gap: 18px; padding-block: 12px 36px; }
.hero h1 { font-size: clamp(3rem, 11vw, 6.2rem); text-transform: uppercase; line-height: 0.9; letter-spacing: -0.005em; }
.hero h1 span { display: block; }
.hero h1 span:last-child { color: var(--muted); }
.lede { font-size: 1.12rem; color: var(--ink-2); max-width: 54ch; }

.step { display: grid; gap: 14px; padding-block: 22px; border-top: 1px solid var(--line); }
.step-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.step-num {
  font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--ink); color: var(--on-ink); flex: none; transform: translateY(-2px);
}
.step h2 { font-size: 1.7rem; text-transform: uppercase; }
.step-note { color: var(--muted); font-size: 0.95rem; }

.kits { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.kit {
  display: grid; gap: 8px; align-content: start; text-align: left; cursor: pointer;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px 16px;
}
.kit:hover { border-color: var(--line-strong); }
.kit[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.kit-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.kit-name { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; text-transform: uppercase; letter-spacing: 0.02em; }
.kit-check { width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong); display: grid; place-items: center; flex: none; }
.kit[aria-pressed="true"] .kit-check { background: var(--ink); border-color: var(--ink); }
.kit[aria-pressed="true"] .kit-check::after { content: ''; width: 9px; height: 5px; border: 2px solid var(--on-ink); border-top: 0; border-right: 0; transform: rotate(-45deg) translate(1px, -1px); }
.kit-blurb { color: var(--ink-2); font-size: 0.95rem; }
.kit-has { display: flex; flex-wrap: wrap; gap: 4px 10px; color: var(--muted); font-size: 0.85rem; }
.kit-has li { list-style: none; }
.kit-plates { display: flex; gap: 4px; }

.seg { display: inline-flex; background: var(--surface-2); border-radius: 999px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.seg a, .seg button {
  border: 0; background: transparent; cursor: pointer; text-decoration: none;
  font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: 0.04em; text-transform: uppercase;
  padding: 7px 14px; border-radius: 999px; color: var(--ink-2); white-space: nowrap;
}
.seg a:hover, .seg button:hover { color: var(--ink); }
.seg [aria-pressed="true"], .seg [aria-current="true"] { background: var(--ink); color: var(--on-ink); }
.level-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.level-blurb { color: var(--ink-2); max-width: 52ch; }

.sessions { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 700px) { .sessions { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.session-card {
  display: grid; gap: 10px; align-content: start; text-decoration: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px 18px; position: relative;
}
.session-card:hover { border-color: var(--ink); }
.session-card h4 { font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; line-height: 1.02; text-transform: uppercase; padding-right: 28px; margin: 0; }
.ses-groups { display: grid; gap: 26px; }
.ses-group { display: grid; gap: 10px; }
.ses-group-head { display: flex; align-items: baseline; gap: 4px 14px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.ses-group-head h3 { font-size: 1.3rem; letter-spacing: 0.06em; text-transform: uppercase; }
.ses-group-head p { color: var(--muted); font-size: 0.95rem; }
.session-card .go { position: absolute; right: 16px; top: 18px; font-size: 1.3rem; line-height: 1; }
.session-card p { color: var(--ink-2); }
.tag {
  justify-self: start;
  font-family: var(--font-display); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-2); border: 1px solid var(--line-strong); border-radius: 999px; padding: 2px 9px;
}
.tag-strong { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }
.meta { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--muted); font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.meta b { color: var(--ink); font-weight: 600; }
.moves { display: flex; flex-wrap: wrap; gap: 4px 6px; }
.moves li { list-style: none; font-size: 0.84rem; color: var(--ink-2); background: var(--surface-2); border-radius: 4px; padding: 1px 7px; }

.callout {
  display: grid; gap: 14px; background: var(--ink); color: var(--on-ink); border-radius: var(--radius);
  padding: 22px clamp(18px, 4vw, 32px); margin-top: 28px;
}
.callout h2 { font-size: clamp(1.8rem, 5vw, 2.4rem); text-transform: uppercase; }
.callout ol { display: grid; gap: 6px; padding-left: 1.3em; }
.callout li::marker { font-family: var(--font-display); font-weight: 700; }
.callout a.btn { justify-self: start; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 10px 16px; border-radius: 999px; background: var(--ink); color: var(--on-ink); border: 1.5px solid var(--ink);
}
.callout .btn { background: var(--on-ink); color: var(--ink); border-color: var(--on-ink); }

.build-card {
  display: grid; gap: 12px; margin-bottom: 26px;
  background: var(--surface); border: 1.5px solid var(--ink); border-radius: var(--radius); padding: 16px 18px 18px;
}
.build-card h3 { font-size: 1.7rem; text-transform: uppercase; }
.build-card p { color: var(--ink-2); margin-top: 4px; }
.chip-strong { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }
.chip-strong:hover { color: var(--on-ink); }

.tip {
  display: grid; gap: 4px; margin-block: 14px 4px; padding: 12px 14px;
  background: var(--surface-2); border-radius: var(--radius);
}
.tip-label { font-family: var(--font-display); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.tip p { color: var(--ink); max-width: var(--measure); }
.hero + .tip { margin-block: 0 22px; }

/* ───────── plate dots ───────── */
.plate { display: inline-block; width: 10px; height: 10px; border-radius: 50%; flex: none; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); }
.plate-machine { background: var(--plate-machine); }
.plate-cable { background: var(--plate-cable); }
.plate-dumbbell { background: var(--plate-dumbbell); }
.plate-barbell { background: var(--plate-barbell); }
.plate-body { background: var(--plate-body); box-shadow: inset 0 0 0 1.5px var(--plate-body-edge); }
.eq-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-2);
}

/* ───────── session page ───────── */
.back { display: inline-flex; gap: 6px; color: var(--muted); text-decoration: none; font-family: var(--font-display); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.9rem; }
.back:hover { color: var(--ink); }
.page-head { display: grid; gap: 12px; padding-block: 10px 20px; }
.page-head h1 { font-size: clamp(2.6rem, 9vw, 4.4rem); text-transform: uppercase; line-height: 0.92; }
.page-head .lede { font-size: 1.05rem; }

.controls { display: grid; gap: 10px; padding: 14px 0; border-block: 1px solid var(--line); }
.control { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.control-label { font-family: var(--font-display); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); width: 4rem; flex: none; }

.effort {
  display: grid; gap: 4px; margin-block: 18px 6px; padding: 12px 14px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.effort p { color: var(--ink-2); }
.effort strong { color: var(--ink); }

.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-top: 34px; margin-bottom: 12px; }
.section-head h2 { font-size: 1.9rem; text-transform: uppercase; }
.section-head span { color: var(--muted); font-variant-numeric: tabular-nums; }

.glance { display: grid; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.glance a { display: grid; grid-template-columns: 1.8rem minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 10px 14px; text-decoration: none; border-top: 1px solid var(--line); }
.glance a:first-child { border-top: 0; }
.glance a:hover { background: var(--surface-2); }
.g-n { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; line-height: 1; font-variant-numeric: tabular-nums; }
.g-name { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; min-width: 0; }
.g-rx { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; font-variant-numeric: tabular-nums; color: var(--ink-2); text-align: right; }

.mini-list { display: grid; gap: 8px; }
.mini {
  display: grid; grid-template-columns: 112px 1fr; gap: 14px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px;
}
.mini .demo { border-radius: var(--radius-sm); }
.mini .demo-tag { display: none; }
.mini-name { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.02em; }
.mini-name a { text-decoration: none; }
.mini-name a:hover { text-decoration: underline; }
.mini-text { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.hint { color: var(--muted); font-size: 0.93rem; margin-top: 10px; max-width: var(--measure); }

.circuit-note {
  display: flex; gap: 10px 18px; flex-wrap: wrap; align-items: baseline;
  background: var(--ink); color: var(--on-ink); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 12px;
}
.circuit-note b { font-family: var(--font-display); font-size: 1.4rem; letter-spacing: 0.03em; text-transform: uppercase; }

.ex-list { display: grid; gap: 16px; counter-reset: ex; }
.ex {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; display: grid; gap: 14px; scroll-margin-top: 76px;
}
.ex-head { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; }
.ex-num {
  font-family: var(--font-display); font-weight: 700; font-size: 2.6rem; line-height: 0.8;
  font-variant-numeric: tabular-nums; min-width: 1.2ch; color: var(--ink);
}
.ex-move { font-family: var(--font-display); font-weight: 600; font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.ex-name { font-size: clamp(1.55rem, 5vw, 2rem); text-transform: uppercase; margin-top: 2px; }
.ex-name a { text-decoration: none; }
.ex-name a:hover { text-decoration: underline; }

.swap { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.swap-label { font-family: var(--font-display); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tab {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg); border-radius: 999px;
  padding: 4px 11px 4px 8px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.92rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-2);
}
.tab:hover { border-color: var(--line-strong); color: var(--ink); }
.tab[aria-pressed="true"] { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }
.tab.off-kit { opacity: 0.62; }
.tab.off-kit[aria-pressed="true"] { opacity: 1; }

.ex-body { display: grid; gap: 16px; }
@media (min-width: 760px) {
  .ex-body { grid-template-columns: minmax(0, 46%) minmax(0, 1fr); align-items: start; }
}
.ex-info { display: grid; gap: 12px; align-content: start; }

.rx { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: var(--radius-sm); margin: 0; overflow: hidden; }
.rx > div { padding: 8px 10px 9px; display: grid; gap: 1px; }
.rx > div + div { border-left: 1px solid var(--line); }
.rx dt { font-family: var(--font-display); font-weight: 600; font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.rx dd { margin: 0; font-family: var(--font-display); font-weight: 700; font-size: 1.65rem; line-height: 1; font-variant-numeric: tabular-nums; }
.rx dd small { font-size: 0.9rem; font-weight: 600; color: var(--ink-2); letter-spacing: 0.02em; }

.works { color: var(--muted); font-size: 0.92rem; }
.weight { color: var(--ink-2); font-size: 0.95rem; }
.weight b { color: var(--ink); font-weight: 600; margin-right: 4px; }
.effort .newhere { margin-top: 6px; }
.works b { color: var(--ink-2); font-weight: 500; }
.setup { color: var(--ink); }
.setup::before { content: 'Set up · '; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.steps { display: grid; gap: 6px; padding-left: 1.45em; color: var(--ink-2); }
.steps li::marker { font-family: var(--font-display); font-weight: 700; color: var(--ink); }
.badges { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font-size: 0.82rem; padding: 2px 8px; border-radius: 4px; background: var(--warn-bg); color: var(--warn-ink); }
.also { display: flex; gap: 6px 10px; flex-wrap: wrap; align-items: baseline; font-size: 0.92rem; color: var(--muted); }
.linkish { background: none; border: 0; padding: 0; cursor: pointer; color: var(--ink); text-decoration: underline; text-underline-offset: 3px; font: inherit; }

details.more { border-top: 1px solid var(--line); padding-top: 10px; }
details.more summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.92rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2);
}
details.more summary::-webkit-details-marker { display: none; }
details.more summary::before { content: '+'; font-size: 1.1rem; width: 1ch; }
details.more[open] summary::before { content: '–'; }
.more-body { display: grid; gap: 12px; padding-top: 10px; }
.more-body h4 { font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-bottom: 4px; }
.more-body ul { padding-left: 1.2em; display: grid; gap: 4px; color: var(--ink-2); }
.ez { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ez > div { background: var(--bg); border-radius: var(--radius-sm); padding: 8px 10px; color: var(--ink-2); font-size: 0.95rem; }
.ez b { display: block; font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); }
@media (max-width: 420px) { .ez { grid-template-columns: 1fr; } }

.after { margin-top: 34px; display: grid; gap: 10px; padding: 18px; border: 1.5px dashed var(--line-strong); border-radius: var(--radius); }
.after h2 { font-size: 1.5rem; text-transform: uppercase; }
.after p { color: var(--ink-2); max-width: var(--measure); }
.after .next-up { color: var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; letter-spacing: 0.02em; text-transform: uppercase; }

/* ───────── demo (the "GIF") ───────── */
.demo {
  position: relative; margin: 0; aspect-ratio: 3 / 2; width: 100%; max-width: 100%;
  background: var(--demo-bg); border-radius: var(--radius-sm); overflow: hidden;
}
.demo > img, .demo > svg {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain;
}
.demo-b { animation: demo-swap 3.2s ease-in-out infinite; }
.demo-tag {
  position: absolute; left: 8px; bottom: 8px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: #fff; background: rgba(0,0,0,.55); border-radius: 4px; padding: 2px 7px;
  display: grid;
}
.demo-tag span { grid-area: 1 / 1; }
.demo-tag .t-b { animation: demo-swap 3.2s ease-in-out infinite; }
.demo-tag .t-a { animation: demo-swap-inv 3.2s ease-in-out infinite; }
@keyframes demo-swap { 0%, 40% { opacity: 0; } 50%, 90% { opacity: 1; } 100% { opacity: 0; } }
@keyframes demo-swap-inv { 0%, 40% { opacity: 1; } 50%, 90% { opacity: 0; } 100% { opacity: 1; } }
.demo:hover .demo-b, .demo:hover .demo-tag span { animation-play-state: paused; }
.demo-note { color: var(--muted); font-size: 0.86rem; margin-top: 6px; }
.art-stroke { stroke: var(--demo-ink); }
.art-floor { stroke: var(--demo-line); }
.art-head { fill: var(--demo-ink); }

@media (prefers-reduced-motion: reduce) {
  .demo { aspect-ratio: 3 / 1; }
  .demo > img, .demo > svg { width: 50%; }
  .demo > .demo-a { left: 0; right: auto; }
  .demo > .demo-b { left: 50%; right: auto; animation: none; opacity: 1; }
  .demo-tag { display: none; }
}

/* ───────── library ───────── */
.filters { display: grid; gap: 10px; padding-block: 6px 18px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
  border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 5px 12px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-2);
}
.chip:hover { border-color: var(--line-strong); color: var(--ink); }
.chip[aria-current="true"] { background: var(--ink); color: var(--on-ink); border-color: var(--ink); }
.group-head { display: flex; align-items: baseline; gap: 10px; margin: 28px 0 12px; }
.group-head h2 { font-size: 1.8rem; text-transform: uppercase; }
.group-head span { color: var(--muted); font-variant-numeric: tabular-nums; }
.lib { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.lib-card {
  display: grid; gap: 8px; align-content: start; text-decoration: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 8px 12px;
}
.lib-card:hover { border-color: var(--ink); }
.lib-card .thumb { aspect-ratio: 3 / 2; width: 100%; object-fit: contain; background: var(--demo-bg); border-radius: var(--radius-sm); }
.lib-card .thumb-art { aspect-ratio: 3 / 2; background: var(--demo-bg); border-radius: var(--radius-sm); overflow: hidden; }
.lib-card .thumb-art svg { width: 100%; height: 100%; display: block; }
.lib-card h3 { font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.02em; padding-inline: 4px; }
.lib-card .eq-chip { padding-inline: 4px; }
.empty { color: var(--muted); padding: 24px 0; }

/* ───────── exercise page ───────── */
.x-grid { display: grid; gap: 22px; }
@media (min-width: 860px) { .x-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: start; } }
.x-info { display: grid; gap: 16px; }
.x-info h2 { font-size: 1.2rem; letter-spacing: 0.08em; text-transform: uppercase; }
.x-block { display: grid; gap: 8px; }
.x-block ul { padding-left: 1.2em; display: grid; gap: 4px; color: var(--ink-2); }
.dose-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.dose-table th, .dose-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.dose-table th { font-family: var(--font-display); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.related { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.related .lib-card h3 { font-size: 1.05rem; }
.used-in { display: flex; flex-wrap: wrap; gap: 6px; }

/* ───────── guide ───────── */
.guide { display: grid; gap: 0; }
.guide-toc { display: flex; flex-wrap: wrap; gap: 6px; padding-block: 4px 12px; }
.g-sec { display: grid; gap: 14px; padding-block: 28px; border-top: 1px solid var(--line); }
.g-sec > h2 { font-size: clamp(1.8rem, 5vw, 2.3rem); text-transform: uppercase; }
.g-sec > p, .g-sec li { max-width: var(--measure); color: var(--ink-2); }
.g-sec > p strong, .g-sec li strong { color: var(--ink); }
.g-sec ul { padding-left: 1.2em; display: grid; gap: 6px; }
.rules { list-style: none; padding: 0 !important; display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); counter-reset: rule; }
.rules li { counter-increment: rule; display: grid; grid-template-columns: 2.2rem 1fr; gap: 8px; padding: 12px 14px; border-top: 1px solid var(--line); color: var(--ink) !important; max-width: none !important; }
.rules li:first-child { border-top: 0; }
.rules li::before { content: counter(rule); font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; line-height: 1; }
.rules li span { color: var(--ink-2); display: block; }

.road { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.road li { display: grid; grid-template-columns: 7.2rem 1fr; gap: 14px; max-width: none !important; padding: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.road .when { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; text-transform: uppercase; line-height: 1.1; color: var(--ink); }
.road .when small { display: block; font-size: 0.8rem; letter-spacing: 0.12em; color: var(--muted); font-weight: 600; }
.road h3 { font-size: 1.35rem; text-transform: uppercase; margin-bottom: 4px; }
@media (max-width: 480px) { .road li { grid-template-columns: 1fr; gap: 6px; } }

.rir { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; max-width: 640px; padding: 3px; }
.rir div { display: grid; gap: 2px; justify-items: center; text-align: center; padding: 10px 4px; border-radius: var(--radius-sm); background: var(--surface-2); color: var(--ink-2); font-size: 0.78rem; line-height: 1.2; }
.rir b { font-family: var(--font-display); font-size: 1.7rem; line-height: 1; color: var(--ink); }
.rir .pro { outline: 2px solid var(--ink); outline-offset: 2px; background: var(--surface); }
.rir .beg { background: var(--ink); color: var(--on-ink); }
.rir .beg b { color: var(--on-ink); }
.rir-key { display: flex; gap: 16px; flex-wrap: wrap; font-size: 0.9rem; color: var(--muted); }
.rir-key span { display: inline-flex; align-items: center; gap: 6px; }
.rir-key i { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }
.rir-key .k-beg { background: var(--ink); }
.rir-key .k-pro { outline: 2px solid var(--ink); outline-offset: 1px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.table th, .table td { font-size: 0.95rem; }
.table th, .table td { text-align: left; padding: 10px clamp(8px, 2vw, 12px); border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table th { font-family: var(--font-display); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.table td.num { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.table tr.up td { background: color-mix(in srgb, var(--plate-dumbbell) 12%, transparent); }

.gloss { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; margin: 0; }
.gloss div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.gloss dt { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; text-transform: uppercase; letter-spacing: 0.02em; }
.gloss dd { margin: 2px 0 0; color: var(--ink-2); font-size: 0.95rem; }

.closing { font-family: var(--font-display); font-weight: 600; font-size: 1.45rem; line-height: 1.25; color: var(--ink) !important; max-width: 40ch !important; text-wrap: balance; }
.note-box { background: var(--warn-bg); color: var(--warn-ink); border-radius: var(--radius); padding: 14px 16px; max-width: var(--measure); }

/* ───────── footer ───────── */
.foot { border-top: 1px solid var(--line); padding-block: 22px 36px; color: var(--muted); font-size: 0.86rem; }
.foot-in { display: grid; gap: 6px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 6px; }

@media (max-width: 640px) {
  .lib { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lib-card h3 { font-size: 1.05rem; }
}
@media (max-width: 520px) {
  .kits { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .kit { padding: 12px; gap: 6px; }
  .kit-name { font-size: 1.12rem; }
  .kit-blurb { display: none; }
  .kit-has { font-size: 0.8rem; gap: 2px 8px; }
  .brand-word { font-size: 1.15rem; letter-spacing: 0.12em; }
  .nav a { padding: 8px 7px; font-size: 0.9rem; }
  .ex { padding: 14px 12px; }
  .ex-num { font-size: 2.2rem; }
  .rx dd { font-size: 1.45rem; }
  .control-label { width: 100%; }
  .mini { grid-template-columns: 92px 1fr; }
}