@layer product {
  /* ---- the Academy: "Dawn Links" frame (design system §2–§5) ----
     Every colour reads the shell's token when it exists and falls back to the
     approved value, so these pages stand on their own and follow the shell
     the moment it defines the same names. Bands alternate ink and bone; each
     band publishes its own --b-* roles and components only read those. */
  .academy {
    --ac-ink-0: var(--ink-0, #07130F); --ac-ink-1: var(--ink-1, #0C1D17); --ac-ink-2: var(--ink-2, #12291F);
    --ac-ink-line: var(--ink-line, #24402F); --ac-ink-grid: var(--ink-grid, #1B3226); --ac-ink-ui: var(--ink-ui, #5A7A64);
    --ac-on-ink: var(--on-ink, #EFE8D6); --ac-on-ink-2: var(--on-ink-2, #B9B29E); --ac-on-ink-3: var(--on-ink-3, #8E978A);
    --ac-bone-0: var(--bone-0, #EFE8D6); --ac-bone-1: var(--bone-1, #F7F2E6); --ac-bone-2: var(--bone-2, #E4DAC2);
    --ac-bone-rule: var(--bone-rule, #D3C8AE); --ac-bone-ui: var(--bone-ui, #847B66);
    --ac-on-bone: var(--on-bone, #12201A); --ac-on-bone-2: var(--on-bone-2, #4A5449);
    --ac-brass: var(--brass, #C9A25B); --ac-brass-bright: var(--brass-bright, #E6C98A); --ac-brass-deep: var(--brass-deep, #735621);
    --ac-turf-mid: var(--turf-mid, #1E4A2F); --ac-rough: var(--rough, #0E2519); --ac-sea: var(--sea, #8FD3B6);
    --ac-numf: var(--num, "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif);
    --ac-ease: cubic-bezier(.2, .7, .2, 1); --ac-ui: 220ms; --ac-chart: 700ms;
    --ac-gutter: clamp(1.25rem, .5rem + 3vw, 4rem);
    --ac-section: clamp(4.5rem, 3rem + 6vw, 9rem);
    --ac-display: clamp(2.375rem, 1.679rem + 2.857vw, 4.25rem);
    --ac-lede: clamp(1.125rem, 1.055rem + .286vw, 1.3125rem);
    --ac-num-xl: clamp(3rem, 2.4rem + 3vw, 5.5rem);
    --ac-num-l: clamp(2.25rem, 1.9rem + 1.6vw, 3.5rem);
    font-family: var(--sans);
  }
  .ac-wrap { width: min(100% - 2 * var(--ac-gutter), 82.5rem); margin-inline: auto; }
  .ac-wrap-wide { width: min(100% - 2 * var(--ac-gutter), 90rem); margin-inline: auto; }
  .ac-vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

  .ac-band { position: relative; isolation: isolate; padding-block: var(--ac-section); background: var(--b-bg); color: var(--b-fg); }
  .ac-band::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: url("/assets/grain.svg") 0 0 / 240px 240px; opacity: .07; }
  .ac-bone {
    --b-bg: var(--ac-bone-0); --b-fg: var(--ac-on-bone); --b-fg-2: var(--ac-on-bone-2); --b-fg-3: var(--ac-on-bone-2);
    --b-accent: var(--ac-brass-deep); --b-em: var(--ac-brass-deep); --b-rule: var(--ac-bone-rule); --b-ui: var(--ac-bone-ui);
    --b-card: var(--ac-bone-1); --b-strong: var(--ac-ink-1); --b-on-strong: var(--ac-on-ink); color-scheme: light;
  }
  .ac-bone::after { opacity: .11; mix-blend-mode: multiply; }
  .ac-bone-2 { --b-bg: var(--ac-bone-2); }
  .ac-ink, .ac-hero {
    --b-bg: var(--ac-ink-0); --b-fg: var(--ac-on-ink); --b-fg-2: var(--ac-on-ink-2); --b-fg-3: var(--ac-on-ink-3);
    --b-accent: var(--ac-brass); --b-em: var(--ac-brass-bright); --b-rule: var(--ac-ink-line); --b-ui: var(--ac-ink-ui);
    --b-card: var(--ac-ink-1); --b-strong: var(--ac-brass); --b-on-strong: var(--ac-ink-0); color-scheme: dark;
  }
  .ac-ink-1 { --b-bg: var(--ac-ink-1); --b-card: var(--ac-ink-0); }
  /* Dark mode is the ink field everywhere: bone bands turn to ink-1. */
  @media (prefers-color-scheme: dark) {
    .ac-bone, .ac-bone-2 {
      --b-bg: var(--ac-ink-1); --b-fg: var(--ac-on-ink); --b-fg-2: var(--ac-on-ink-2); --b-fg-3: var(--ac-on-ink-3);
      --b-accent: var(--ac-brass); --b-em: var(--ac-brass-bright); --b-rule: var(--ac-ink-line); --b-ui: var(--ac-ink-ui);
      --b-card: var(--ac-ink-0); --b-strong: var(--ac-brass); --b-on-strong: var(--ac-ink-0); color-scheme: dark;
    }
    .ac-bone::after { opacity: .07; mix-blend-mode: normal; }
  }
  .academy :focus-visible { outline: 2px solid var(--b-em, var(--ac-brass-bright)); outline-offset: 3px; border-radius: 2px; }
  .academy a { color: inherit; text-decoration-color: var(--b-accent); text-underline-offset: .22em; text-decoration-thickness: 1px; }
  .academy a:hover { text-decoration-thickness: 2px; }

  /* ---- voices: tracked caps, light serif, condensed numerals ---- */
  .ac-label, .ac-eyebrow { font: 600 clamp(.6875rem, .664rem + .095vw, .75rem)/1.3 var(--sans); letter-spacing: .22em; text-transform: uppercase; }
  .ac-label { color: var(--b-fg-2); }
  .ac-eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .9em; color: var(--b-accent); }
  .ac-roman { font: 500 1.35em/1 var(--serif); letter-spacing: .04em; text-transform: none; }
  .ac-diamond { font-size: .8em; }
  .ac-rule { width: 2.5rem; height: 1px; background: currentColor; opacity: .6; }
  .ac-fine { font-size: .8125rem; line-height: 1.55; color: var(--b-fg-3); max-width: 52rem; }
  .ac-num { font-family: var(--ac-numf); font-weight: 600; font-variant-numeric: lining-nums tabular-nums; letter-spacing: .01em; }
  .ac-unit { font: 600 .6875rem/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; margin-left: .45em; color: var(--b-fg-2); }
  .ac-head { display: grid; gap: 1.25rem; max-width: 52rem; margin-bottom: clamp(2.5rem, 2rem + 3vw, 5rem); }
  .ac-head h2, .ac-lab-head h2, .ac-feature-copy h2 { font-size: var(--ac-display); font-weight: 300; line-height: 1.04; }
  .academy h2 em, .academy h1 em { font-style: italic; font-weight: 300; color: var(--b-em); }
  .ac-head p:not(.ac-eyebrow) { font-size: var(--ac-lede); line-height: 1.55; color: var(--b-fg-2); max-width: 40rem; }
  .ac-head-tight { margin-bottom: 2rem; }

  /* ---- buttons ---- */
  .ac-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 3rem; }
  .ac-btn { display: inline-flex; align-items: center; justify-content: center; gap: .7em; min-height: 3.25rem; padding: 0 1.6rem; border: 1px solid transparent; border-radius: 2px; font: 600 .8125rem/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; text-decoration: none; cursor: pointer; touch-action: manipulation; transition: background-color var(--ac-ui) var(--ac-ease), border-color var(--ac-ui) var(--ac-ease), color var(--ac-ui) var(--ac-ease); }
  .academy .ac-btn { text-decoration: none; }
  .ac-arrow { width: 1rem; height: 1rem; flex: none; transition: translate var(--ac-ui) var(--ac-ease); }
  .ac-btn:hover .ac-arrow, .ac-next:hover .ac-arrow { translate: 3px 0; }
  .academy .ac-btn-brass { background: var(--ac-brass); color: var(--ac-ink-0); }
  .academy .ac-btn-brass:hover { background: var(--ac-brass-bright); }
  .academy .ac-btn-ink { background: var(--b-strong); color: var(--b-on-strong); }
  .ac-btn-ink:hover { filter: brightness(1.15); }
  .academy .ac-btn-ghost { border-color: rgb(239 232 214 / .55); color: var(--ac-on-ink); background: rgb(7 19 15 / .18); }
  .ac-btn-ghost:hover { border-color: var(--ac-on-ink); background: rgb(7 19 15 / .4); }
  .ac-btn-small { min-height: 2.75rem; padding: 0 1.1rem; font-size: .75rem; }
  .ac-link-btn { justify-self: start; min-height: 44px; padding: 0; border: 0; background: none; cursor: pointer; font: 500 .8125rem/1 var(--sans); color: var(--b-fg-2); text-decoration: underline; text-decoration-color: var(--b-ui); text-underline-offset: .22em; }
  .ac-link-btn:disabled { cursor: default; text-decoration: none; opacity: .7; }

  /* ---- the photo band at the top of every Academy page ---- */
  .ac-hero { position: relative; isolation: isolate; overflow: clip; display: grid; align-items: end; min-height: clamp(30rem, 24rem + 22vw, 42rem); background: var(--ac-ink-0); color: var(--ac-on-ink); }
  .ac-hero-img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; max-width: none; object-fit: cover; object-position: var(--hero-focus, 50% 50%); }
  .ac-hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background:
    linear-gradient(to bottom, rgb(5 12 9 / .62) 0%, rgb(5 12 9 / .1) 30%, rgb(5 12 9 / .35) 55%, rgb(7 19 15 / .96) 100%),
    linear-gradient(to right, rgb(5 12 9 / .55) 0%, rgb(5 12 9 / 0) 65%); }
  .ac-hero-plate-links { --hero-focus: 50% 60%; }
  .ac-hero-plate-club { --hero-focus: 40% 55%; }
  .ac-hero-band-bag, .ac-hero-band-tee { --hero-focus: 78% 50%; }
  .ac-hero-body { display: grid; gap: 1.25rem; padding-block: clamp(5rem, 3rem + 6vw, 9rem) clamp(3rem, 2rem + 3vw, 6rem); }
  .ac-hero h1 { font-size: clamp(2.75rem, 1.6rem + 4.6vw, 5.75rem); font-weight: 300; line-height: .98; letter-spacing: -.01em; max-width: 15ch; color: var(--ac-on-ink); }
  .ac-lede { font-size: var(--ac-lede); line-height: 1.55; font-weight: 350; color: var(--ac-on-ink); opacity: .92; max-width: 38rem; }
  .ac-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; font: 500 .75rem/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ac-on-ink-2); }
  .ac-meta span { display: inline-flex; align-items: center; gap: 1.25rem; }
  .ac-meta span + span::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--ac-brass); }
  /* Phones wrap the line; a dot that lands at the start of a row reads as a stray bullet. */
  @media (max-width: 40rem) { .ac-meta { gap: .4rem 1rem; } .ac-meta span + span::before { content: none; } }
  .ac-hero .breadcrumbs { font: 500 .6875rem/1.3 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--ac-on-ink-2); }
  .ac-hero .breadcrumb-list li + li::before { color: var(--ac-brass); }
  .ac-hero .breadcrumb-list a { text-decoration: none; }
  .ac-hero .breadcrumb-list a:hover { color: var(--ac-on-ink); }

  /* ---- lessons: sidebar curriculum, prose on bone, the foot ---- */
  .ac-answer { padding-block: clamp(4rem, 3rem + 4vw, 7rem); }
  .ac-lesson-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 3rem; }
  .ac-lesson-grid > * { min-width: 0; }
  @media (min-width: 1000px) {
    .ac-lesson-grid { grid-template-columns: 14rem minmax(0, 1fr); gap: clamp(3rem, 6vw, 7rem); }
    .ac-lessons { position: sticky; top: 2rem; align-self: start; }
  }
  .ac-body { max-width: 46rem; min-width: 0; }
  .academy .ac-lessons { display: block; } /* the catalogue shell makes every nav a flex row */
  .ac-lessons ol { list-style: none; margin: .75rem 0 1rem; padding: 0; border-top: 1px solid var(--b-ui); }
  .ac-lessons li { position: relative; border-bottom: 1px solid var(--b-rule); }
  .ac-lessons a { display: grid; grid-template-columns: 2rem 1fr auto; align-items: center; gap: .5rem; min-height: 2.9rem; text-decoration: none; color: var(--b-fg-2); font-size: .9375rem; }
  .ac-ln { font-family: var(--ac-numf); font-weight: 600; }
  .ac-lessons .is-current a { color: var(--b-fg); font-weight: 600; }
  .ac-lessons .is-current .ac-ln { color: var(--b-accent); }
  .ac-lessons a:hover { color: var(--b-fg); }
  @media (max-width: 999px) {
    .ac-lessons ol { display: flex; gap: .5rem; overflow-x: auto; border: 0; scrollbar-width: none; margin-inline: calc(-1 * var(--ac-gutter)); padding: 2px var(--ac-gutter); }
    .ac-lessons li { flex: none; border: 1px solid var(--b-rule); border-radius: 999px; }
    .ac-lessons a { grid-template-columns: auto auto auto; padding: 0 .9rem; min-height: 2.75rem; font-size: .875rem; }
    .ac-lessons .is-current { border-color: var(--b-fg); }
    .ac-lessons .ac-fine { display: none; }
  }
  .ac-tick { width: 16px; height: 16px; border: 1px solid var(--b-ui); border-radius: 50%; display: inline-grid; place-items: center; }
  .is-done .ac-tick, [aria-pressed="true"] > .ac-tick { background: var(--b-accent); border-color: var(--b-accent); }
  .is-done .ac-tick::after, [aria-pressed="true"] > .ac-tick::after { content: ""; width: 7px; height: 4px; border-left: 1.5px solid var(--b-bg); border-bottom: 1.5px solid var(--b-bg); rotate: -45deg; translate: 0 -1px; }

  .ac-prose { color: var(--b-fg); font-size: 1.0625rem; line-height: 1.7; }
  .ac-prose > * + * { margin-top: 1.5rem; }
  .ac-prose h2 { font-size: clamp(2rem, 1.6rem + 1.4vw, 2.75rem); font-weight: 400; line-height: 1.08; margin-top: 4rem; }
  .ac-prose h2:first-child { margin-top: 0; }
  .ac-prose h3 { font-size: 1.5rem; margin-top: 2rem; }
  .ac-prose ul, .ac-prose ol { padding-left: 1.2rem; }
  .ac-prose li + li { margin-top: .5rem; }
  .ac-prose li::marker { color: var(--b-accent); }
  .ac-prose strong { font-weight: 600; }
  /* The answer: the lead sentence of a lesson, set large; the rest of its paragraph reads as body. */
  .ac-lead > h2:first-child + p > strong:first-child, .ac-intro > p:first-child > strong:first-child { display: block; margin-bottom: .75rem; font: 400 clamp(1.5rem, 1.3rem + .9vw, 2rem)/1.3 var(--serif); }
  .ac-prose .table-wrap, .ac-table { overflow-x: auto; border: 1px solid var(--b-rule); background: var(--b-card); }
  .ac-prose table, .ac-table table { width: 100%; min-width: 34rem; border-collapse: collapse; font-size: .9375rem; line-height: 1.5; }
  .ac-table caption { text-align: start; padding: 1rem 1rem .75rem; font: 600 .6875rem/1.3 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--b-fg-2); }
  .ac-prose th, .ac-prose td, .ac-table th, .ac-table td { text-align: start; vertical-align: top; padding: .85rem 1rem; border-top: 1px solid var(--b-rule); }
  .ac-prose thead th, .ac-table thead th { font: 600 .6875rem/1.3 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--ac-on-ink); background: var(--ac-ink-1); border-top: 0; }
  .ac-table tbody th { font-weight: 600; white-space: nowrap; }
  .ac-table td:last-child { min-width: 15rem; }
  .ac-td-num { font-family: var(--ac-numf); font-weight: 600; font-size: 1.125rem; white-space: nowrap; }
  .ac-table-note { margin-top: 1rem; }
  .ac-body .sources, .ac-body .sf-limits { margin-top: 3rem; }

  .ac-foot { display: grid; gap: 1.5rem; margin-top: 5rem; padding-top: 2rem; border-top: 3px double var(--b-ui); }
  @media (min-width: 760px) { .ac-foot { grid-template-columns: 1fr 1fr; } .ac-plan { grid-column: 1 / -1; } }
  .ac-done { display: grid; gap: .75rem; align-content: start; }
  .ac-done .ac-btn { justify-self: start; }
  .ac-check { width: 14px; height: 14px; border: 1px solid currentColor; border-radius: 50%; display: inline-grid; place-items: center; }
  [aria-pressed="true"] .ac-check { background: var(--ac-brass); border-color: var(--ac-brass); }
  [aria-pressed="true"] .ac-check::after { content: ""; width: 6px; height: 3px; border-left: 1.5px solid var(--ac-ink-0); border-bottom: 1.5px solid var(--ac-ink-0); rotate: -45deg; translate: 0 -1px; }
  .academy .ac-next { display: grid; grid-template-columns: 1fr auto; gap: .35rem .75rem; align-items: end; padding: 1.5rem; background: var(--ac-ink-1); color: var(--ac-on-ink); text-decoration: none; transition: background-color var(--ac-ui); }
  .ac-next:hover { background: var(--ac-ink-2); }
  .ac-next .ac-label { grid-column: 1 / -1; color: var(--ac-brass); }
  .ac-next-title { font: 400 1.75rem/1.1 var(--serif); }
  .ac-next .ac-arrow { width: 1.25rem; height: 1.25rem; color: var(--ac-brass); }
  .ac-plan { font-size: .9375rem; color: var(--b-fg-2); }

  /* ---- the hub: the curriculum card, progress, featured band, weeks ---- */
  .ac-intro { max-width: 46rem; margin-bottom: clamp(3rem, 2rem + 4vw, 6rem); }
  .ac-head-split { max-width: none; }
  @media (min-width: 900px) { .ac-head-split { grid-template-columns: 7fr 5fr; align-items: end; gap: 4rem; } }
  .ac-head-split > div:first-child { display: grid; gap: 1.25rem; }
  .ac-progress { display: grid; gap: .5rem; padding: 1.5rem; background: var(--b-card); border: 1px solid var(--b-rule); }
  .ac-prog-fig { display: flex; align-items: baseline; gap: .6rem; }
  .ac-prog-fig .ac-num { font-size: var(--ac-num-l); line-height: .9; color: var(--b-accent); }
  .ac-prog-of { font: italic 400 1.375rem/1 var(--serif); }
  .ac-prog-bar { position: relative; height: 3px; background: var(--b-rule); overflow: clip; }
  .ac-prog-bar span { position: absolute; inset: 0; background: var(--b-accent); transform-origin: left; transform: scaleX(var(--p, 0)); transition: transform var(--ac-chart) var(--ac-ease); }

  .ac-curriculum { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--b-fg); }
  .ac-row { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 3rem; align-items: center; border-bottom: 1px solid var(--b-rule); }
  .academy .ac-row-link { display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: .75rem 1.25rem; align-items: start; padding: 1.5rem 0; text-decoration: none; color: var(--b-fg); transition: background-color var(--ac-ui); }
  .ac-row-link:hover { background: rgb(201 162 91 / .08); }
  .ac-row-n { font: 600 2.25rem/1 var(--ac-numf); color: var(--b-accent); }
  .ac-row-main { display: grid; gap: .3rem; }
  .ac-row-main .ac-label { color: var(--b-accent); }
  .ac-row-title { font: 400 clamp(1.625rem, 1.4rem + .9vw, 2.25rem)/1.05 var(--serif); }
  .ac-row-what { color: var(--b-fg-2); font-size: .9375rem; }
  .ac-row-meta, .ac-row-art { display: none; }
  .ac-row-state { justify-self: end; display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border: 0; background: none; cursor: pointer; color: var(--b-fg); }
  .ac-row-state .ac-tick { width: 22px; height: 22px; }
  @media (min-width: 900px) {
    .ac-row { grid-template-columns: minmax(0, 1fr) 3rem 15rem; gap: 0 1.5rem; }
    .academy .ac-row-link { grid-template-columns: 4.5rem minmax(0, 1fr) 9rem 6rem; align-items: center; }
    .ac-row-meta { display: grid; gap: .35rem; font-size: .875rem; color: var(--b-fg-2); }
    .ac-row-art { display: block; aspect-ratio: 8 / 5; margin-block: 1rem; background: var(--ac-ink-1); }
    .ac-row-art .ac-mini { width: 100%; height: 100%; }
  }
  .ac-note { margin-top: 2rem; max-width: 52rem; font-size: .9375rem; }
  .ac-note h2 { font-size: 1.5rem; }

  .ac-feature { display: grid; gap: 3rem; align-items: center; }
  @media (min-width: 900px) { .ac-feature { grid-template-columns: 7fr 5fr; gap: 6rem; } }
  .ac-feature-art { background: var(--ac-ink-1); border: 1px solid var(--ac-ink-line); outline: 1px solid rgb(201 162 91 / .25); outline-offset: 6px; }
  .ac-feature-art .ac-mini { width: 100%; height: auto; }
  .ac-feature-copy { display: grid; gap: 1.5rem; justify-items: start; }
  .ac-feature-copy p:not(.ac-eyebrow) { color: var(--b-fg-2); font-size: var(--ac-lede); line-height: 1.55; }

  .ac-weeks { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; }
  @media (min-width: 800px) { .ac-weeks { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
  .ac-weeks li { display: grid; gap: .75rem; padding: 1.5rem; background: var(--b-card); border: 1px solid var(--b-rule); border-top: 3px solid var(--b-accent); }
  .ac-week-n { font: 600 var(--ac-num-l)/.9 var(--ac-numf); color: var(--b-accent); }
  .ac-weeks h3 { font-size: 1.5rem; margin-bottom: .35rem; }
  .ac-weeks h3 a { text-decoration: none; }
  .ac-weeks p { color: var(--b-fg-2); font-size: .9375rem; }
  .ac-weeks p a { display: inline-block; min-height: 24px; }
  @media (prefers-reduced-motion: reduce) { .ac-prog-bar span, .ac-arrow { transition: none; } }
}

@layer product {
  /* ---- the Academy's instruments: dark field, one bright line, big
     numerals with small caps units, a written teaching-model note ---- */
  .ac-lab-head { display: grid; gap: 1rem; max-width: 46rem; margin-bottom: 3rem; }
  .ac-lab-intro, .ac-lab-head > p:not(.ac-eyebrow):not(.ac-fine) { color: var(--b-fg-2); font-size: var(--ac-lede); line-height: 1.55; }
  .ac-lab-intro p + p { margin-top: .75rem; }
  .ac-tr-0 { stop-color: #8E6F34; }
  .ac-tr-1 { stop-color: #E6C98A; }
  .ac-tr-2 { stop-color: #FFF4D6; }

  /* the hub's small diagrams */
  .mf-sky-0 { stop-color: #0C1D17; }
  .mf-sky-1 { stop-color: #5B4630; }
  .mf-ground { fill: var(--ac-rough); }
  .mf-fw { fill: #143523; }
  .mf-ring { fill: none; stroke: var(--ac-ink-line); stroke-width: 1; }
  .mf-target { stroke: rgb(239 232 214 / .3); stroke-dasharray: 3 5; }
  .mf-glow { fill: none; stroke: var(--ac-brass-bright); stroke-width: 7; opacity: .16; stroke-linecap: round; }
  .mf-tr { fill: none; stroke-width: 2.5; stroke-linecap: round; }
  .mf-land { fill: none; stroke: var(--ac-brass-bright); stroke-width: 1; }
  .mf-ball { fill: var(--ac-on-ink); }
  .mb-grid line { stroke: var(--ac-ink-grid); }
  .mb-ground { stroke: var(--ac-ink-ui); }
  .mb-up { stroke: var(--ac-on-ink-3); stroke-dasharray: 4 5; }
  .mb-face { stroke: var(--ac-on-ink-3); stroke-width: 1.5; opacity: .6; stroke-linecap: round; }
  .mb-face.is-sel { stroke: var(--ac-on-ink); stroke-width: 3; opacity: 1; }
  .mb-t { font: 600 12px var(--ac-numf); letter-spacing: .08em; fill: var(--ac-on-ink-3); }
  .mb-t.is-sel { fill: var(--ac-on-ink); }
  .mb-arc { fill: none; stroke: var(--ac-brass); stroke-width: 1.5; }
  .mb-deg { font: 600 24px var(--ac-numf); fill: var(--ac-brass-bright); }
  .mb-caps rect { fill: var(--ac-ink-2); stroke: var(--ac-ink-line); }
  .mb-caps rect.is-sel { fill: var(--ac-brass); stroke: var(--ac-brass); }
  .ms-target { stroke: var(--ac-brass); stroke-width: 1.2; stroke-dasharray: 6 5; }
  .ms-t { font: 600 11px var(--ac-numf); letter-spacing: .18em; fill: var(--ac-brass-bright); }
  .ms-foot { fill: var(--ac-ink-2); stroke: var(--ac-on-ink-3); stroke-width: 1.2; }
  .ms-mid { stroke: rgb(239 232 214 / .2); stroke-dasharray: 3 5; }
  .ms-ball { fill: none; stroke: var(--ac-on-ink-3); stroke-width: 1.3; }
  .ms-ball.is-sel { fill: var(--ac-on-ink); stroke: var(--ac-brass); stroke-width: 2; }
  .ms-bt { font: 600 12px var(--ac-numf); letter-spacing: .1em; fill: var(--ac-on-ink-3); }
  .ms-bt.is-sel { fill: var(--ac-brass-bright); }

  /* ---- Know your bag ---- */
  .ac-tabs { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
  @media (min-width: 900px) { .ac-tabs { grid-template-columns: repeat(14, minmax(0, 1fr)); } }
  .ac-tab { display: grid; justify-items: center; gap: 4px; min-height: 60px; padding: 8px 2px 6px; background: var(--ac-ink-2); color: var(--ac-on-ink-2); border: 1px solid var(--ac-ink-line); border-radius: 2px; font: 600 .9375rem/1 var(--ac-numf); letter-spacing: .06em; cursor: pointer; touch-action: manipulation; transition: background-color var(--ac-ui), color var(--ac-ui), border-color var(--ac-ui); }
  .ac-tab:hover { color: var(--ac-on-ink); border-color: var(--ac-ink-ui); }
  .ac-tab[aria-selected="true"] { background: var(--ac-brass); color: var(--ac-ink-0); border-color: var(--ac-brass); }
  .ac-tab-glyph { width: 22px; height: 22px; }
  .tg-face { stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; }
  .tg-ground { stroke: currentColor; stroke-width: 1; opacity: .45; }
  .ac-bag-panel { margin-top: 1rem; padding: clamp(1.25rem, .8rem + 2vw, 2.5rem); background: var(--b-card); border: 1px solid var(--ac-ink-line); display: grid; gap: 1.5rem 3rem; grid-template-columns: minmax(0, 1fr); }
  @media (min-width: 760px) { .ac-bag-panel { grid-template-columns: minmax(0, 20rem) minmax(0, 1fr); } }
  .ac-bag-panel:focus-visible { outline-offset: -3px; }
  .ac-loft-fig { display: grid; gap: .5rem; }
  .ac-loft-svg { width: 100%; height: auto; overflow: visible; }
  .lf-grid line { stroke: var(--ac-ink-grid); }
  .lf-ground { stroke: var(--ac-ink-ui); }
  .lf-upright { stroke: var(--ac-on-ink-3); stroke-dasharray: 4 5; }
  .lf-arc { fill: none; stroke: var(--ac-brass); stroke-width: 1.5; }
  .lf-head { fill: var(--ac-ink-2); stroke: var(--ac-on-ink); stroke-width: 2; stroke-linejoin: round; }
  .lf-face { stroke: var(--ac-on-ink); stroke-width: 4; stroke-linecap: round; }
  .lf-shaft { stroke: var(--ac-on-ink-2); stroke-width: 3; stroke-linecap: round; }
  .lf-tgt { font: 600 10px var(--ac-numf); letter-spacing: .2em; fill: var(--ac-brass); }
  .lf-ball { fill: var(--ac-on-ink); opacity: .9; }
  .lf-deg { font: 600 26px var(--ac-numf); fill: var(--ac-brass-bright); }
  .ac-bag-read { display: grid; gap: .75rem; align-content: start; min-width: 0; }
  .ac-bag-read .ac-label { color: var(--ac-brass); }
  .ac-bag-name { font-size: clamp(2.25rem, 1.8rem + 2vw, 3.5rem); font-weight: 300; }
  .ac-bag-nums { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; padding-block: 1rem; border-block: 1px solid var(--ac-ink-line); }
  .ac-bag-nums dt { font: 600 .6875rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--ac-on-ink-3); margin-bottom: .5rem; }
  .ac-bag-nums dd { margin: 0; }
  .ac-num-xl { font-size: var(--ac-num-xl); line-height: .85; color: var(--ac-on-ink); white-space: nowrap; }
  .ac-sub { margin-top: .5rem !important; font-size: .8125rem; color: var(--ac-on-ink-2); }
  .ac-bag-purpose { font: italic 400 1.375rem/1.4 var(--serif); max-width: 30rem; }
  .ac-strip { grid-column: 1 / -1; padding-top: 1rem; border-top: 1px solid var(--ac-ink-line); }
  .ac-strip-svg { width: 100%; max-width: 46rem; height: auto; }
  .fs-ground, .fs-tick { stroke: var(--ac-ink-ui); }
  .fs-t { font: 600 11px var(--ac-numf); letter-spacing: .1em; fill: var(--ac-on-ink-3); }
  .fs-arc { fill: none; stroke: var(--ac-brass-bright); stroke-width: 2; stroke-dasharray: 1; stroke-linecap: round; }
  .fs-land { fill: none; stroke: var(--ac-brass-bright); stroke-width: 1.5; }
  .ac-carry { grid-column: 1 / -1; display: grid; gap: .75rem; min-width: 0; }
  .ac-carry-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: .75rem; }
  .ac-seven { display: inline-flex; align-items: center; gap: .75rem; font: 500 .8125rem/1.2 var(--sans); color: var(--ac-on-ink-2); }
  .ac-seven-field { display: inline-flex; align-items: baseline; gap: .25rem; border-bottom: 1px solid var(--ac-brass); }
  .ac-seven input { width: 4.2rem; min-height: 44px; background: none; border: 0; color: var(--ac-brass-bright); font: 600 1.75rem/1 var(--ac-numf); text-align: end; appearance: textfield; -moz-appearance: textfield; }
  .ac-seven input::-webkit-inner-spin-button, .ac-seven input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
  .ac-cap-plot, .ac-cap-axis { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: .5rem; }
  .ac-cap-names { list-style: none; margin: 0; padding: 0; font: 600 .8125rem/16px var(--ac-numf); letter-spacing: .06em; color: var(--ac-on-ink-3); }
  .ac-cap-names .is-current { color: var(--ac-on-ink); }
  .ac-cap-svg { width: 100%; height: 208px; overflow: visible; }
  .cap-grid { stroke: var(--ac-ink-grid); stroke-width: 1; }
  .cap-grid.major { stroke: var(--ac-ink-line); }
  .cap-range { stroke: var(--ac-ink-2); stroke-width: 10; stroke-linecap: round; }
  .cap-mid { stroke: var(--ac-on-ink-3); stroke-width: 2; opacity: .5; }
  .ac-cap.is-current .cap-range { stroke: var(--ac-brass); }
  .ac-cap.is-current .cap-mid { stroke: var(--ac-ink-0); opacity: 1; }
  .ac-cap-axis { font: 600 .75rem/1 var(--ac-numf); letter-spacing: .08em; color: var(--ac-on-ink-3); }
  .ac-axis-track { position: relative; height: 1.2em; }
  .ac-axis-track span { position: absolute; top: 0; translate: -50% 0; }
  .ac-axis-track .t0 { left: 0; translate: 0 0; }
  .ac-axis-track .t100 { left: 33.333%; }
  .ac-axis-track .t200 { left: 66.667%; }
  .ac-axis-track .t300 { right: 0; translate: 0 0; white-space: nowrap; }
  @media (forced-colors: active) { .ac-tab[aria-selected="true"] { outline: 3px solid CanvasText; } .ac-cap.is-current .cap-range { stroke: Highlight; } }

  /* ---- the ball flight lab ---- */
  .ac-lab { display: grid; gap: 2rem; }
  @media (min-width: 1080px) { .ac-lab { grid-template-columns: minmax(0, 1fr) 24rem; gap: 3rem; align-items: start; } }
  .ac-stage { display: grid; gap: 1rem; min-width: 0; }
  .ac-stage-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 1rem; }
  .ac-shape { font: italic 300 clamp(2.25rem, 1.7rem + 2.2vw, 3.75rem)/1 var(--serif); min-height: 1em; }
  .ac-toggle { display: inline-grid; grid-auto-flow: column; gap: 3px; padding: 3px; border: 1px solid var(--ac-ink-ui); border-radius: 999px; }
  .ac-toggle button { min-height: 40px; padding: 0 1.1rem; border: 0; border-radius: 999px; background: none; color: var(--ac-on-ink-2); cursor: pointer; font: 600 .6875rem/1 var(--sans); letter-spacing: .18em; text-transform: uppercase; transition: background-color var(--ac-ui), color var(--ac-ui); }
  .ac-toggle button[aria-pressed="true"] { background: var(--ac-on-ink); color: var(--ac-ink-0); }
  .ac-stage-frame { position: relative; overflow: clip; border: 1px solid var(--ac-ink-line); background: var(--ac-ink-1); }
  .ac-stage-svg { width: 100%; height: auto; }
  .sk-0 { stop-color: #07130F; } .sk-1 { stop-color: #233026; }
  .dw-0 { stop-color: #F0A35C; stop-opacity: 0; } .dw-1 { stop-color: #F0A35C; stop-opacity: .28; }
  .gr-0 { stop-color: #10291C; } .gr-1 { stop-color: #0A1C13; }
  .fw-0 { stop-color: #1B4229; } .fw-1 { stop-color: #2A6140; }
  .st-hills { fill: #0B1A14; }
  .st-ring { fill: none; stroke: #2B4A37; stroke-width: .9; }
  .st-ring.major { stroke: #3A5E47; stroke-width: 1.1; }
  .st-ring-t { font: 600 11px var(--ac-numf); letter-spacing: .12em; fill: var(--ac-on-ink-3); }
  .st-target { stroke: rgb(239 232 214 / .35); stroke-dasharray: 4 6; }
  .st-tee { fill: #2F6A46; }
  .st-rough { fill: var(--ac-rough); }
  .st-fw-top { fill: var(--ac-turf-mid); }
  .tr { fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1; stroke-dashoffset: 0; }
  .tr-glow { fill: none; stroke: var(--ac-brass-bright); stroke-width: 10; opacity: .2; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 0; }
  .tr-start { fill: none; stroke: var(--ac-on-ink); stroke-dasharray: 4 6; opacity: .45; }
  .tr-ghost { fill: none; stroke: var(--ac-on-ink-2); stroke-width: 1.5; opacity: .25; }
  .tr-ball { fill: var(--ac-on-ink); stroke: var(--ac-brass); stroke-width: 2; }
  .tr-land { fill: none; stroke: var(--ac-brass-bright); stroke-width: 1.5; }
  .tr-land2 { fill: none; stroke: var(--ac-brass-bright); opacity: .5; }
  .tr-apex line { stroke: var(--ac-brass-bright); stroke-width: 1.5; }
  @media (prefers-reduced-motion: no-preference) {
    .is-landed .tr-land2 { animation: ac-land 900ms var(--ac-ease) both; transform-box: fill-box; transform-origin: center; }
    @keyframes ac-land { from { opacity: .8; scale: .4; } to { opacity: 0; scale: 1.6; } }
  }
  .ac-impact { position: absolute; right: .75rem; bottom: .75rem; width: clamp(6.5rem, 5rem + 5vw, 9rem); display: grid; gap: .35rem; justify-items: center; margin: 0; }
  .ac-impact-svg { width: 100%; height: auto; }
  .im-bg { fill: rgb(7 19 15 / .82); stroke: var(--ac-ink-line); }
  .im-target { stroke: rgb(239 232 214 / .35); stroke-dasharray: 3 4; }
  .im-path { stroke: var(--ac-sea); stroke-width: 2.5; }
  .im-path-head { fill: var(--ac-sea); }
  .im-face { stroke: var(--ac-brass-bright); stroke-width: 5; stroke-linecap: round; }
  .im-normal { stroke: var(--ac-brass-bright); stroke-width: 1.5; stroke-dasharray: 2 3; }
  .im-ball { fill: var(--ac-on-ink); }
  .ac-impact figcaption { display: flex; flex-wrap: wrap; justify-content: center; gap: .2rem .6rem; font: 600 .5625rem/1.2 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--ac-on-ink-2); }
  .ac-k-face, .ac-k-path { display: inline-flex; align-items: center; gap: .3rem; }
  .ac-k-face::before, .ac-k-path::before { content: ""; width: 10px; height: 3px; background: var(--ac-brass-bright); }
  .ac-k-path::before { background: var(--ac-sea); }
  .ac-im-cap { flex-basis: 100%; text-align: center; color: var(--ac-on-ink-3); }
  @media (max-width: 600px) { .ac-stage-frame { display: grid; } .ac-impact { position: static; width: 7rem; justify-self: end; margin: -.5rem .75rem .75rem auto; } }
  .ac-reads { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; border-top: 1px solid var(--ac-ink-line); }
  .ac-reads div { padding: 1rem .75rem 0 0; min-width: 0; }
  .ac-reads div + div { padding-left: .75rem; border-left: 1px solid var(--ac-ink-line); }
  .ac-reads dt { font: 600 .625rem/1.2 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--ac-on-ink-3); margin-bottom: .5rem; }
  .ac-reads dd { margin: 0; white-space: nowrap; }
  .ac-reads .ac-num { font-size: var(--ac-num-l); line-height: .9; }
  @media (max-width: 600px) { .ac-reads { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 1rem; } .ac-reads div:nth-child(3) { padding-left: 0; border-left: 0; } }
  .ac-controls { display: grid; gap: 2rem; padding: 1.5rem; background: var(--ac-ink-1); border: 1px solid var(--ac-ink-line); }
  .ac-control { display: grid; gap: .25rem; }
  .ac-control-head { display: flex; justify-content: space-between; align-items: baseline; }
  .ac-control-head label { font: 600 .75rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; }
  .ac-control-head output { font-size: 2rem; line-height: 1; color: var(--ac-brass-bright); }
  .ac-control-ends { display: flex; justify-content: space-between; font: 500 .6875rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--ac-on-ink-3); }
  .ac-control input[type="range"] { --fill-a: 50%; --fill-b: 50%; appearance: none; -webkit-appearance: none; width: 100%; height: 44px; margin: 0; background: transparent; cursor: pointer; touch-action: pan-y; }
  .ac-control input[type="range"]::-webkit-slider-runnable-track { height: 2px; background: linear-gradient(to right, var(--ac-ink-ui) 0 var(--fill-a), var(--ac-brass) var(--fill-a) var(--fill-b), var(--ac-ink-ui) var(--fill-b)); }
  .ac-control input[type="range"]::-moz-range-track { height: 2px; background: linear-gradient(to right, var(--ac-ink-ui) 0 var(--fill-a), var(--ac-brass) var(--fill-a) var(--fill-b), var(--ac-ink-ui) var(--fill-b)); }
  .ac-control input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; margin-top: -9px; border-radius: 50%; background: var(--ac-on-ink); border: 2px solid var(--ac-brass); box-shadow: 0 0 0 6px rgb(201 162 91 / .12); }
  .ac-control input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--ac-on-ink); border: 2px solid var(--ac-brass); }
  .ac-control input[type="range"]:focus-visible { outline: none; }
  .ac-control input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px var(--ac-ink-0), 0 0 0 5px var(--ac-brass-bright); }
  .ac-control input[type="range"]:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 3px var(--ac-ink-0), 0 0 0 5px var(--ac-brass-bright); }
  .ac-presets { margin: 0; padding: 0; border: 0; min-width: 0; }
  .ac-presets legend { padding: 0; margin-bottom: .75rem; }
  .ac-preset-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; }
  .ac-preset { display: grid; justify-items: center; gap: .3rem; min-height: 44px; padding: .55rem .25rem .6rem; background: var(--ac-ink-0); border: 1px solid var(--ac-ink-line); border-radius: 2px; color: var(--ac-on-ink-2); cursor: pointer; font: 600 .6875rem/1.15 var(--sans); letter-spacing: .06em; touch-action: manipulation; transition: border-color var(--ac-ui), color var(--ac-ui), box-shadow var(--ac-ui); }
  .ac-preset:hover { border-color: var(--ac-ink-ui); color: var(--ac-on-ink); }
  .ac-preset[aria-pressed="true"] { border-color: var(--ac-brass); color: var(--ac-on-ink); box-shadow: 0 0 0 1px var(--ac-brass), 0 0 18px -4px rgb(201 162 91 / .55); }
  .ac-pt { width: 40px; height: 40px; }
  .pt-target { stroke: rgb(239 232 214 / .25); stroke-dasharray: 2 3; }
  .pt-curve { fill: none; stroke: var(--ac-on-ink-2); stroke-width: 2; stroke-linecap: round; }
  .pt-land { fill: var(--ac-on-ink-2); }
  .ac-preset[aria-pressed="true"] .pt-curve { stroke: var(--ac-brass-bright); }
  .ac-preset[aria-pressed="true"] .pt-land { fill: var(--ac-brass-bright); }
  .ac-controls [data-replay] { justify-self: start; }
  .ac-lab-note { margin-top: 1.5rem; }
  @media (forced-colors: active) { .tr { stroke: Highlight; } }

  /* ---- setup: the grip switch (CSS :has() only) and the ball-position strip ---- */
  .ac-grip { display: grid; gap: 2rem; }
  @media (min-width: 860px) { .ac-grip { grid-template-columns: minmax(0, 1fr) 24rem; gap: 4rem; align-items: center; } }
  .ac-grip-fig { display: grid; gap: .75rem; margin: 0; padding: 1.5rem; background: var(--b-card); border: 1px solid var(--ac-ink-line); }
  .ac-grip-svg { width: 100%; max-width: 30rem; height: auto; margin-inline: auto; }
  .g-head, .g-body { fill: none; stroke: var(--ac-on-ink-3); stroke-width: 1.5; }
  .g-arm { stroke: var(--ac-on-ink-3); stroke-width: 1.5; }
  .g-shaft { stroke: var(--ac-on-ink); stroke-width: 4; stroke-linecap: round; }
  .g-lbl { font: 600 10px var(--ac-numf); letter-spacing: .22em; fill: var(--ac-on-ink-3); }
  .g-hand, .g-thumb { fill: var(--ac-ink-2); stroke: var(--ac-on-ink); stroke-width: 1.8; stroke-linecap: round; }
  .gk { fill: none; stroke: var(--ac-ink-ui); stroke-width: 2; stroke-linecap: round; }
  .gk.is-shown { stroke: var(--ac-brass-bright); stroke-width: 2.6; }
  .g-k { font: 600 16px var(--ac-numf); fill: var(--ac-brass-bright); }
  .g-v { fill: none; stroke: var(--ac-brass-bright); stroke-width: 2.4; stroke-linecap: round; }
  .g-v-line { stroke: var(--ac-brass); stroke-width: 1.2; stroke-dasharray: 4 4; }
  .g-v-target { fill: none; stroke: var(--ac-brass-bright); stroke-width: 1.5; }
  .g-set { opacity: 0; transition: opacity var(--ac-ui) var(--ac-ease); }
  .ac-grip-read { display: none; margin: 0; border-top: 1px solid var(--ac-ink-line); }
  .ac-grip:has(input[value="neutral"]:checked) .g-neutral, .ac-grip:has(input[value="strong"]:checked) .g-strong, .ac-grip:has(input[value="weak"]:checked) .g-weak { opacity: 1; }
  .ac-grip:has(input[value="neutral"]:checked) .ac-grip-read-neutral, .ac-grip:has(input[value="strong"]:checked) .ac-grip-read-strong, .ac-grip:has(input[value="weak"]:checked) .ac-grip-read-weak { display: grid; }
  @supports not selector(:has(*)) { .g-neutral { opacity: 1; } .ac-grip-read-neutral { display: grid; } }
  .ac-grip-side { display: grid; gap: 1.5rem; }
  .ac-grip-read div { display: grid; gap: .3rem; padding-block: .75rem; border-bottom: 1px solid var(--ac-ink-line); }
  .ac-grip-read dt, .ac-bp-reads dt { font: 600 .625rem/1.2 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--ac-brass); }
  .ac-grip-read dd, .ac-bp-reads dd { margin: 0; font: 400 1.375rem/1.3 var(--serif); color: var(--ac-on-ink); }
  .ac-seg { margin: 0; padding: 0; border: 0; min-width: 0; }
  .ac-seg legend { padding: 0; margin-bottom: .75rem; }
  .ac-seg-row { display: inline-grid; grid-auto-flow: column; gap: 3px; padding: 3px; border: 1px solid var(--ac-ink-ui); border-radius: 999px; }
  .ac-seg-opt { position: relative; display: grid; }
  .ac-seg-opt input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
  .ac-seg-opt span { display: inline-flex; align-items: center; min-height: 44px; padding: 0 1.2rem; border-radius: 999px; font: 600 .75rem/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--ac-on-ink-2); transition: background-color var(--ac-ui), color var(--ac-ui); }
  .ac-seg-opt input:checked + span { background: var(--ac-brass); color: var(--ac-ink-0); }
  .ac-seg-opt input:focus-visible + span { outline: 2px solid var(--ac-brass-bright); outline-offset: 2px; }

  .ac-bp { display: grid; gap: 1.5rem; padding: clamp(1.25rem, .8rem + 2vw, 2.5rem); background: var(--ac-ink-1); border: 1px solid var(--ac-ink-line); }
  .ac-pills { display: flex; flex-wrap: wrap; gap: 6px; }
  .ac-pill { min-height: 44px; padding: 0 1.1rem; border: 1px solid var(--ac-ink-ui); border-radius: 999px; background: none; color: var(--ac-on-ink-2); cursor: pointer; font: 600 .75rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; touch-action: manipulation; transition: background-color var(--ac-ui), color var(--ac-ui), border-color var(--ac-ui); }
  .ac-pill:hover { color: var(--ac-on-ink); border-color: var(--ac-on-ink-3); }
  .ac-pill[aria-pressed="true"] { background: var(--ac-brass); border-color: var(--ac-brass); color: var(--ac-ink-0); }
  .ac-bp-svg { width: 100%; height: auto; }
  .bp-grid line { stroke: var(--ac-ink-grid); }
  .bp-target { stroke: var(--ac-brass); stroke-width: 1.4; stroke-dasharray: 8 6; }
  .bp-arrow { fill: var(--ac-brass); }
  .bp-t { font: 600 11px var(--ac-numf); letter-spacing: .2em; fill: var(--ac-brass-bright); }
  .bp-t.dim { fill: var(--ac-on-ink-3); }
  .bp-mid { stroke: rgb(239 232 214 / .22); stroke-dasharray: 3 6; }
  .bp-foot rect { fill: var(--ac-ink-2); stroke: var(--ac-on-ink-2); stroke-width: 1.5; }
  .bp-ball-dot { fill: var(--ac-on-ink); stroke: var(--ac-brass); stroke-width: 2.5; }
  .bp-ball-ring { fill: none; stroke: var(--ac-brass-bright); opacity: .5; }
  .is-placed .bp-move { transform: translateX(var(--x)); }
  .is-live .bp-move { transition: transform var(--ac-chart) var(--ac-ease); }
  .ac-bp-reads { display: grid; margin: 0; border-top: 1px solid var(--ac-ink-line); }
  @media (min-width: 760px) { .ac-bp-reads { grid-template-columns: 1fr 1fr 1.4fr; } .ac-bp-reads div + div { padding-left: 1rem; border-left: 1px solid var(--ac-ink-line); } }
  .ac-bp-reads div { display: grid; gap: .35rem; align-content: start; padding: 1rem 1rem .5rem 0; }
  @media (max-width: 600px) { .bp-t { font-size: 20px; } .st-ring-t { font-size: 18px; } .lf-tgt { font-size: 14px; } .fs-t { font-size: 20px; } }
  .ac-table-ink { margin-top: 3rem; }
  .ac-table-ink caption, .ac-table-ink td { color: var(--ac-on-ink-2); }
  .ac-table-ink thead th { background: var(--ac-ink-2); color: var(--ac-on-ink); }
  @media (prefers-reduced-motion: reduce) { .is-live .bp-move, .g-set { transition: none; } }
}