/* ==========================================================================
   Design System page (design-system.html)
   A living style guide. Samples reuse the site's real classes; everything
   prefixed .ds- is page chrome for presenting them.
   ========================================================================== */

.ds-page .page-hero { padding-bottom: var(--s-8); }
.ds-page .page-hero:has(.page-hero__mascot) .page-hero__title { padding-right: clamp(150px, 18vw, 260px); }

.ds-stats { display: flex; gap: var(--s-6); flex-wrap: wrap; }
.ds-stats div { min-width: 90px; }
.ds-stats dt { font-size: 14px; color: var(--n-600); margin-bottom: var(--s-1); }
.ds-stats dd { font-size: 40px; font-weight: 500; letter-spacing: var(--track-heading); line-height: 1; color: var(--blue); }

/* Layout: sticky nav on the left, sections on the right */
.ds {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: var(--s-8);
  align-items: start;
  padding-bottom: var(--s-10);
}
.ds-nav {
  position: sticky;
  top: calc(var(--header-h) + var(--s-4));
  padding-top: var(--s-2);
}
.ds-nav__label { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--n-500); margin-bottom: var(--s-4); }
.ds-nav ol { list-style: none; counter-reset: ds; display: grid; gap: 2px; }
.ds-nav li { counter-increment: ds; }
.ds-nav a {
  display: flex; gap: var(--s-3); align-items: baseline;
  padding: 7px 12px; margin-left: -12px;
  border-radius: var(--r-pill);
  font-size: 15px; color: var(--n-600);
  transition: color .3s, background-color .3s;
}
.ds-nav a::before { content: counter(ds, decimal-leading-zero); font-size: 12px; color: var(--n-400); font-variant-numeric: tabular-nums; }
.ds-nav a:hover { color: var(--ink); background: var(--n-100); }
.ds-nav a.is-current { color: var(--blue-text); background: var(--blue-wash); }
.ds-nav a.is-current::before { color: var(--blue); }

/* Sections */
.ds-sec { padding-top: var(--s-9); scroll-margin-top: var(--header-h); }
.ds-sec:first-child { padding-top: var(--s-4); }
.ds-sec__head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: var(--s-5);
  align-items: baseline;
  padding-bottom: var(--s-6);
  margin-bottom: var(--s-7);
  border-bottom: 1px solid rgba(16,18,35,.1);
}
.ds-sec__num { font-size: 15px; color: var(--blue); font-variant-numeric: tabular-nums; }
.ds-sec__title { font-size: clamp(40px, 5.4vw, 76px); font-weight: 500; letter-spacing: var(--track-display); line-height: 1.04; }
.ds-sec__lead { grid-column: 2; margin-top: var(--s-4); max-width: 38em; font-size: 18px; line-height: 1.55; color: var(--n-600); }

.ds-h3 { font-size: 20px; font-weight: 500; letter-spacing: var(--track-title); margin-bottom: var(--s-4); }
.ds-p { font-size: 16px; line-height: 1.55; color: var(--n-600); margin-bottom: var(--s-5); }
.ds-p--sm { font-size: 14px; margin: var(--s-4) 0 0; }
.ds-mt { margin-top: var(--s-8); }
.ds code, .ds-code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .86em; }
.ds :not(pre) > code { background: var(--n-100); color: var(--n-800); padding: 2px 7px; border-radius: 6px; }
.ds-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }
.ds-panel { border-radius: var(--r-lg); background: var(--n-100); padding: var(--s-6); }
.ds-list { list-style: none; display: grid; gap: var(--s-3); }
.ds-list li { position: relative; padding-left: 22px; font-size: 16px; line-height: 1.5; }
.ds-list li::before { content: ""; position: absolute; left: 2px; top: .6em; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.ds-list--cols { grid-template-columns: 1fr 1fr; column-gap: var(--s-7); }
.ds-kv { list-style: none; display: grid; gap: var(--s-3); }
.ds-kv li { display: flex; justify-content: space-between; gap: var(--s-4); font-size: 15px; padding-bottom: var(--s-3); border-bottom: 1px solid rgba(16,18,35,.08); }
.ds-kv li span { color: var(--n-600); text-align: right; }

/* 01 Principles */
.ds-principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
.ds-principle { border-radius: var(--r-lg); background: var(--blue-wash); padding: var(--s-6) var(--s-5); transition: translate .5s var(--ease-out), background-color .4s; }
.ds-principle:hover { translate: 0 -6px; background: var(--blue-soft); }
.ds-principle__n { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; margin-bottom: var(--s-7); }
.ds-principle h3 { font-size: 22px; font-weight: 500; letter-spacing: var(--track-title); margin-bottom: var(--s-2); }
.ds-principle p { font-size: 15px; line-height: 1.55; color: var(--n-600); }

/* 02 Logo */
.ds-logos { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: var(--s-4); margin-bottom: var(--s-5); }
.ds-logo { border-radius: var(--r-lg); overflow: hidden; display: flex; flex-direction: column; }
.ds-logo__stage { flex: 1; min-height: 240px; display: grid; place-items: center; padding: var(--s-6); }
.ds-logo__lockup { width: min(260px, 80%); }
.ds-logo__icon { width: 110px; filter: drop-shadow(0 0 0 #fff); }
.ds-logo__mark { width: 76px; height: auto; color: #fff; }
.ds-logo figcaption { display: flex; justify-content: space-between; gap: var(--s-3); padding: var(--s-4) var(--s-5); font-size: 14px; background: rgba(255,255,255,.7); }
.ds-logo figcaption span { color: var(--n-600); }
.ds-logo--wash .ds-logo__stage { background: var(--blue-wash); }
.ds-logo--blue .ds-logo__stage { background: var(--blue); }
.ds-logo--blue .ds-logo__icon { width: 110px; border-radius: 50%; box-shadow: 0 0 0 6px rgba(255,255,255,.18); }
.ds-logo--ink .ds-logo__stage { background: var(--ink); }
.ds-logo--blue figcaption, .ds-logo--ink figcaption { background: var(--n-100); }

.ds-clear { display: grid; place-items: center; padding: var(--s-3) 0; }
.ds-clear__box { position: relative; padding: 36px; border: 1.5px dashed var(--blue); border-radius: 8px; background: repeating-linear-gradient(45deg, transparent 0 6px, rgba(15,23,240,.06) 6px 12px); }
.ds-clear__box img { width: 96px; position: relative; }
.ds-clear__box::after { content: ""; position: absolute; inset: 36px; background: #fff; border-radius: 50%; }
.ds-clear__x { position: absolute; font-size: 13px; font-style: italic; color: var(--blue); z-index: 1; }
.ds-clear__x--t { top: 8px; left: 50%; translate: -50% 0; }
.ds-clear__x--l { left: 12px; top: 50%; translate: 0 -50%; }
.ds-minsize { display: flex; align-items: flex-end; gap: var(--s-6); flex-wrap: wrap; }
.ds-minsize figure { display: grid; justify-items: center; gap: var(--s-2); }
.ds-minsize figcaption { font-size: 13px; color: var(--n-600); }

.ds-donts { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--s-4); }
.ds-dont__stage { position: relative; aspect-ratio: 1; border-radius: var(--r-md); background: var(--n-100); display: grid; place-items: center; overflow: hidden; }
.ds-dont__stage img { width: 46%; }
.ds-dont__stage::after { content: ""; position: absolute; top: 10px; right: 10px; width: 24px; height: 24px; border-radius: 50%; background: var(--red) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M7 7l10 10M17 7 7 17'/%3E%3C/svg%3E") center/14px no-repeat; }
.ds-dont__stage--busy { background: conic-gradient(from 30deg, #d67e19, #17a086, #ab1111, #ffd23f, #0f17f0, #d67e19); }
.ds-dont figcaption { font-size: 14px; margin-top: var(--s-2); color: var(--n-700); }

/* 03 Colour */
.ds-swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: var(--s-4); }
.ds-swatches--brand { grid-template-columns: 2fr repeat(4, 1fr); }
.ds-swatch {
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 190px; padding: var(--s-4);
  border-radius: var(--r-lg); border: 1px solid rgba(16,18,35,.08);
  font: inherit; text-align: left; cursor: copy;
  transition: translate .4s var(--ease-out);
}
.ds-swatch:hover { translate: 0 -4px; }
.ds-swatch--big { min-height: 260px; }
.ds-swatch__name { display: block; font-size: 18px; font-weight: 500; letter-spacing: var(--track-title); }
.ds-swatch__use { display: block; font-size: 13px; opacity: .75; margin-top: 4px; line-height: 1.4; }
.ds-swatch__meta { display: grid; gap: 2px; font-size: 13px; }
.ds-swatch__meta code { background: none !important; padding: 0 !important; color: inherit !important; }
.ds-swatch__aa { display: flex; gap: 6px; margin-top: 6px; }
.ds-swatch__aa span { font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 99px; background: rgba(255,255,255,.22); }
.ds-swatch.is-light .ds-swatch__aa span { background: rgba(16,18,35,.08); }

.ds-ramp { display: grid; grid-template-columns: repeat(9, 1fr); border-radius: var(--r-lg); overflow: hidden; }
.ds-ramp .ds-swatch { border-radius: 0; border: 0; min-height: 150px; padding: var(--s-3); }
.ds-ramp .ds-swatch__name { font-size: 15px; }

.ds-ratio { display: flex; height: 72px; border-radius: var(--r-md); overflow: hidden; border: 1px solid rgba(16,18,35,.1); }
.ds-ratio span { display: grid; place-items: center; font-size: 13px; white-space: nowrap; overflow: hidden; }
.ds-pairs { display: grid; gap: var(--s-2); }
.ds-pair { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); padding: 10px 14px; border-radius: var(--r-sm); font-size: 15px; }
.ds-pair b { font-size: 12px; padding: 3px 8px; border-radius: 99px; background: rgba(255,255,255,.9); color: var(--ink); white-space: nowrap; }

/* 04 Type */
.ds-specimen { display: grid; grid-template-columns: auto 1fr; gap: var(--s-7); align-items: center; padding: var(--s-7); border-radius: var(--r-xl); background: var(--ink); color: #fff; overflow: hidden; }
.ds-specimen__aa { font-size: clamp(120px, 16vw, 230px); font-weight: 500; letter-spacing: var(--track-display); line-height: .9; color: var(--blue-soft); }
.ds-specimen__name { font-size: 32px; font-weight: 500; letter-spacing: var(--track-heading); }
.ds-specimen__meta { font-size: 14px; color: var(--n-400); margin: 4px 0 var(--s-5); }
.ds-specimen__glyphs { font-size: clamp(16px, 1.7vw, 22px); line-height: 1.5; letter-spacing: .02em; color: var(--n-200); word-break: break-all; }
.ds-weights { display: flex; gap: var(--s-5); flex-wrap: wrap; margin-top: var(--s-5); font-size: 18px; }

.ds-scale { border-top: 1px solid rgba(16,18,35,.1); }
.ds-scale__row { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: var(--s-5); align-items: center; padding: var(--s-4) 0; border-bottom: 1px solid rgba(16,18,35,.1); }
.ds-scale__meta { font-size: 13px; color: var(--n-600); line-height: 1.5; }
.ds-scale__meta b { display: block; font-size: 15px; color: var(--ink); font-weight: 500; }
.ds-scale__sample { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.15; padding-bottom: .08em; }

.ds-track { display: grid; gap: var(--s-4); }
.ds-track p { display: grid; gap: 2px; }
.ds-track span { font-size: 36px; font-weight: 500; line-height: 1.1; }
.ds-track code, .ds-track small { letter-spacing: 0; font-size: 13px; color: var(--n-600); }

.ds-tester { border-radius: var(--r-xl); border: 1px solid rgba(16,18,35,.12); padding: var(--s-6); }
.ds-tester__bar { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); flex-wrap: wrap; margin-bottom: var(--s-5); }
.ds-tester__bar label { display: flex; align-items: center; gap: var(--s-3); font-size: 15px; }
.ds-tester__bar input[type="range"] { width: 200px; accent-color: var(--blue); }
.ds-tester__bar output { min-width: 48px; font-variant-numeric: tabular-nums; color: var(--n-600); }
.ds-tester__text { font-size: 64px; line-height: 1.08; letter-spacing: var(--track-display); outline: none; overflow-wrap: anywhere; min-height: 1.1em; }
.ds-tester__text .accent { color: var(--blue); }
.ds-tester__hint { font-size: 13px; color: var(--n-500); margin-top: var(--s-3); }

/* 05 Layout */
.ds-space { display: grid; gap: var(--s-2); }
.ds-space__row { display: grid; grid-template-columns: 90px 60px minmax(0, 1fr); align-items: center; gap: var(--s-4); font-size: 14px; }
.ds-space__row code { justify-self: start; }
.ds-space__row span { color: var(--n-600); font-variant-numeric: tabular-nums; }
.ds-space__bar { height: 22px; border-radius: 4px; background: var(--blue); transform-origin: left; max-width: 100%; }
.ds-space__row:nth-child(n+7) .ds-space__bar { background: var(--blue-deep); }

.ds-radii { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--s-4); }
.ds-radii div { aspect-ratio: 1; background: var(--blue-soft); border: 2px solid var(--blue); }
.ds-radii .ds-radii__pill { aspect-ratio: 2 / 1; margin-top: 25%; }
.ds-radii figcaption { font-size: 13px; color: var(--n-600); margin-top: var(--s-2); line-height: 1.5; }

.ds-container-demo { display: grid; grid-template-columns: 34px 1fr 34px; height: 120px; margin-bottom: var(--s-5); border-radius: var(--r-md); overflow: hidden; background: #fff; }
.ds-container-demo__g { display: grid; place-items: center; writing-mode: vertical-rl; font-size: 11px; color: var(--n-500); background: repeating-linear-gradient(45deg, transparent 0 4px, rgba(16,18,35,.06) 4px 8px); }
.ds-container-demo__cols { display: grid; grid-template-columns: repeat(12, 1fr); gap: 6px; padding: 10px 0; }
.ds-container-demo__cols i { background: rgba(15,23,240,.12); border-radius: 3px; }

.ds-bps { list-style: none; display: grid; gap: 6px; }
.ds-bps li { display: flex; gap: var(--s-4); align-items: center; padding: 9px 12px; border-radius: var(--r-sm); font-size: 15px; transition: background-color .3s, color .3s; }
.ds-bps b { min-width: 58px; font-weight: 500; font-variant-numeric: tabular-nums; }
.ds-bps span { color: var(--n-600); }
.ds-bps li.is-now { background: var(--blue); color: #fff; }
.ds-bps li.is-now span { color: rgba(255,255,255,.8); }

.ds-elev { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-5); }
.ds-elev div { height: 130px; border-radius: var(--r-lg); background: #fff; }
.ds-elev figcaption { font-size: 13px; color: var(--n-600); margin-top: var(--s-4); line-height: 1.5; }
.ds-elev figcaption b { display: block; color: var(--ink); font-weight: 500; font-size: 15px; }

/* 06 Icons */
.ds-icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: var(--s-3); }
.ds-icon { border: 0; display: grid; justify-items: center; gap: var(--s-3); padding: var(--s-5) var(--s-2) var(--s-4); border-radius: var(--r-md); background: var(--n-100); color: var(--ink); font: inherit; cursor: copy; transition: background-color .3s, color .3s; }
.ds-icon:hover { background: var(--blue); color: #fff; }
.ds-icon svg { width: 24px; height: 24px; }
.ds-icon span { font-size: 12px; opacity: .7; }

/* 07 Components */
.ds-comp { border: 1px solid rgba(16,18,35,.1); border-radius: var(--r-xl); padding: var(--s-5); margin-bottom: var(--s-5); }
.ds-comp__head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s-4); flex-wrap: wrap; margin-bottom: var(--s-4); }
.ds-comp__head .ds-h3 { margin: 0; }
.ds-comp__head code { font-size: 13px !important; }
.ds-comp__stage { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-4); padding: var(--s-6); border-radius: var(--r-lg); background: var(--n-100); }
.ds-comp__stage + .ds-comp__stage { margin-top: var(--s-3); }
.ds-comp__stage--ink { background: var(--ink); }
.ds-comp__stage--block { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: var(--s-6); align-items: start; background: #fff; border: 1px solid rgba(16,18,35,.06); }
.ds-comp__stage--block:has(.section-head) { display: flex; }
.ds-comp__stage--pills { position: relative; min-height: 180px; overflow: hidden; align-content: center; }
.ds-comp__stage--pills .pill { cursor: grab; touch-action: none; }
.ds-comp__stage--pills .pill:active { cursor: grabbing; }
.ds-comp__stage--project { display: block; background: #fff; border: 1px solid rgba(16,18,35,.06); }
.ds-comp__stage--project .card { position: relative; top: auto; }
.ds-comp__stage--plans { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); padding-top: 90px; background: #fff; border: 1px solid rgba(16,18,35,.06); }
.ds-anatomy { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-3) var(--s-5); margin-top: var(--s-5); font-size: 14px; line-height: 1.5; color: var(--n-600); }
.ds-anatomy b { display: block; color: var(--ink); font-weight: 500; }
.ds-anatomy--side { grid-template-columns: 1fr; margin: 0; }
.ds-status { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; }
.ds-status i { width: 9px; height: 9px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(23,160,134,.2); }

.ds-arts { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-3); }
.ds-art { position: relative; aspect-ratio: 4 / 3; border-radius: var(--r-md); overflow: hidden; border: 0; padding: 0; cursor: pointer; background: var(--n-100); }
.ds-art svg { width: 100%; height: 100%; display: block; transition: scale .6s var(--ease-out); }
.ds-art:hover svg { scale: 1.06; }
.ds-art span { position: absolute; left: 10px; bottom: 10px; font-size: 12px; padding: 4px 10px; border-radius: 99px; background: rgba(255,255,255,.92); color: var(--ink); font-family: ui-monospace, Menlo, monospace; }

/* 08 Mascot */
.ds-turn { display: grid; grid-template-columns: repeat(4, 1fr); align-items: end; padding: var(--s-7) var(--s-5) var(--s-5); border-radius: var(--r-xl); background: var(--blue-soft); }
.ds-turn figure { display: grid; justify-items: center; gap: var(--s-3); }
.ds-turn .mascot { width: min(170px, 100%); }
.ds-turn figcaption { font-size: 14px; color: var(--n-700); }
.ds-mascot-play { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: var(--s-6); align-items: center; }
.ds-mascot-play__stage { display: grid; place-items: end center; min-height: 420px; padding: var(--s-6); border-radius: var(--r-xl); background: radial-gradient(circle at 50% 70%, var(--blue-wash), var(--n-100) 70%); }
.ds-mascot-play__stage .mascot { width: min(230px, 80%); }
.ds-mascot-play__ctrl .chips { margin-bottom: var(--s-4); }
.ds-mascot-play__ctrl .chip { height: 36px; padding: 0 14px; font-size: 14px; }
.ds-mascot-play__ctrl .ds-list { margin: var(--s-5) 0 var(--s-6); }
.ds-code { padding: var(--s-4) var(--s-5); border-radius: var(--r-md); background: var(--ink); color: #e9eaff; font-size: 13px; line-height: 1.6; overflow-x: auto; white-space: pre; }

/* 09 Motion */
.ds-eases { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
.ds-ease { border-radius: var(--r-lg); background: var(--n-100); padding: var(--s-5); display: grid; gap: var(--s-3); }
.ds-ease__name { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s-2); }
.ds-ease__name b { font-size: 16px; font-weight: 500; }
.ds-ease__name small { font-size: 12px; color: var(--n-600); }
.ds-ease svg { width: 100%; height: auto; background: #fff; border-radius: var(--r-sm); overflow: visible; }
.ds-ease__track { position: relative; height: 34px; border-radius: 99px; background: #fff; }
.ds-ease__dot { position: absolute; top: 5px; left: 5px; width: 24px; height: 24px; border-radius: 50%; background: var(--blue); }
.ds-ease p { font-size: 13px; line-height: 1.45; color: var(--n-600); }
.ds-ease button, .ds-replay { justify-self: start; height: 34px; padding: 0 14px; border-radius: 99px; border: 1px solid rgba(16,18,35,.18); background: #fff; font: inherit; font-size: 13px; cursor: pointer; transition: border-color .3s, color .3s; }
.ds-ease button:hover, .ds-replay:hover { border-color: var(--blue); color: var(--blue); }

.ds-reveals { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
.ds-reveal-demo { border-radius: var(--r-lg); background: var(--n-100); padding: var(--s-4); display: grid; gap: var(--s-3); }
.ds-reveal-demo__stage { height: 150px; border-radius: var(--r-md); background: #fff; display: grid; place-items: center; align-content: center; gap: 8px; overflow: hidden; padding: var(--s-4); }
.ds-block { display: block; width: 120px; height: 18px; border-radius: 6px; background: var(--blue-soft); }
.ds-block:first-child { background: var(--blue); width: 90px; }
.ds-reveal-demo__text { font-size: 22px; font-weight: 500; letter-spacing: var(--track-title); line-height: 1.15; text-align: center; }
.ds-reveal-demo__art { width: 100%; height: 118px; border-radius: var(--r-sm); background: linear-gradient(135deg, var(--blue), var(--blue-deep)); }
.ds-reveal-demo__num { font-size: 64px; font-weight: 500; letter-spacing: var(--track-display); color: var(--blue); font-variant-numeric: tabular-nums; }

/* 10 Voice */
.ds-traits { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
.ds-traits div { padding: var(--s-5); border-radius: var(--r-lg); background: var(--blue); color: #fff; }
.ds-traits b { display: block; font-size: 28px; font-weight: 500; letter-spacing: var(--track-heading); }
.ds-traits span { font-size: 15px; opacity: .75; }
.ds-dodont { display: grid; gap: var(--s-3); }
.ds-dodont__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }
.ds-do, .ds-dont-say { position: relative; padding: var(--s-4) var(--s-5) var(--s-4) 56px; border-radius: var(--r-md); font-size: 17px; line-height: 1.45; }
.ds-do { background: rgba(23,160,134,.1); }
.ds-dont-say { background: rgba(171,17,17,.07); color: var(--n-600); }
.ds-do::before, .ds-dont-say::before { position: absolute; left: 18px; top: var(--s-4); width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-size: 13px; font-weight: 700; }
.ds-do::before { content: "✓"; background: var(--teal); }
.ds-dont-say::before { content: "✕"; background: var(--red); }

/* 11 Accessibility */
.ds-a11y { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
.ds-a11y__k { display: block; font-size: 40px; font-weight: 500; letter-spacing: var(--track-heading); color: var(--blue); margin-bottom: var(--s-5); }
.ds-a11y .ds-p { margin: 0; }
.ds-page :is(a, button, input, select, textarea, [contenteditable]):focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* 12 Checklist */
.ds-check { list-style: none; display: grid; gap: var(--s-2); }
.ds-check label { display: flex; gap: var(--s-4); align-items: flex-start; padding: var(--s-4) var(--s-5); border-radius: var(--r-md); background: var(--n-100); font-size: 16px; line-height: 1.5; cursor: pointer; transition: background-color .3s; }
.ds-check input { flex: none; width: 20px; height: 20px; margin-top: 2px; accent-color: var(--blue); }
.ds-check label:has(input:checked) { background: var(--blue-wash); }
.ds-check label:has(input:checked) span { color: var(--n-500); text-decoration: line-through; text-decoration-color: var(--blue); }
.ds-check__done { margin-top: var(--s-5); font-size: 22px; font-weight: 500; color: var(--teal); }

/* Copy toast */
.ds-toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 80;
  translate: -50% 0;
  padding: 12px 20px; border-radius: var(--r-pill);
  background: var(--ink); color: #fff; font-size: 14px;
  opacity: 0; pointer-events: none; transition: opacity .3s, translate .4s var(--ease-out);
}
.ds-toast.is-on { opacity: 1; translate: -50% -6px; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1100px) {
  .ds { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .ds-nav { position: static; margin: 0 calc(var(--gutter) * -1) var(--s-4); padding: 0 var(--gutter); overflow-x: auto; scrollbar-width: none; }
  .ds-nav::-webkit-scrollbar { display: none; }
  .ds-nav__label { display: none; }
  .ds-nav ol { display: flex; gap: var(--s-2); width: max-content; }
  .ds-nav a { margin: 0; border: 1px solid rgba(16,18,35,.12); white-space: nowrap; }
  .ds-principles, .ds-eases, .ds-reveals { grid-template-columns: repeat(2, 1fr); }
  .ds-swatches--brand { grid-template-columns: repeat(3, 1fr); }
  .ds-swatches--brand .ds-swatch--big { grid-column: span 3; min-height: 200px; }
  .ds-arts { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .ds-page .page-hero:has(.page-hero__mascot) .page-hero__title { padding-right: 0; }
  .ds-grid-2, .ds-logos, .ds-mascot-play, .ds-comp__stage--block, .ds-comp__stage--plans, .ds-dodont__row, .ds-list--cols { grid-template-columns: minmax(0, 1fr); }
  .ds-comp__stage--plans { row-gap: 100px; }
  .ds-specimen { grid-template-columns: 1fr; gap: var(--s-4); padding: var(--s-6); }
  .ds-ramp { grid-template-columns: repeat(3, 1fr); }
  .ds-radii { grid-template-columns: repeat(3, 1fr); }
  .ds-elev, .ds-traits, .ds-a11y { grid-template-columns: repeat(2, 1fr); }
  .ds-donts { grid-template-columns: repeat(3, 1fr); }
  .ds-anatomy { grid-template-columns: 1fr 1fr; }
  .ds-turn { grid-template-columns: repeat(2, 1fr); row-gap: var(--s-5); }
  .ds-mascot-play__stage { min-height: 340px; }
  .ds-scale__row { grid-template-columns: 1fr; gap: var(--s-2); }
  .ds-sec__head { grid-template-columns: 1fr; }
  .ds-sec__lead { grid-column: 1; }
  .ds-sec__num { margin-bottom: var(--s-2); }
}
@media (max-width: 600px) {
  .ds-sec { padding-top: var(--s-8); }
  .ds-principles, .ds-eases, .ds-reveals, .ds-a11y, .ds-anatomy { grid-template-columns: 1fr; }
  .ds-swatches, .ds-swatches--brand { grid-template-columns: repeat(2, 1fr); }
  .ds-swatches--brand .ds-swatch--big { grid-column: span 2; }
  .ds-swatch { min-height: 160px; }
  .ds-arts { grid-template-columns: repeat(2, 1fr); }
  .ds-donts { grid-template-columns: repeat(2, 1fr); }
  .ds-comp { padding: var(--s-4); border-radius: var(--r-lg); }
  .ds-comp__stage { padding: var(--s-4); }
  .ds-tester { padding: var(--s-4); }
  .ds-tester__bar input[type="range"] { width: 130px; }
  .ds-panel { padding: var(--s-5); }
  .ds-stats { gap: var(--s-5); }
  .ds-stats dd { font-size: 32px; }
  .ds-ratio span { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .ds-principle, .ds-swatch, .ds-art svg, .ds-toast { transition: none; }
}