/* Design system · Quern: this page's own pieces. Tokens only (tokens.css).
   The swatches, token values and icon grid are filled by the page's own script from assets/ds/tokens.css and
   assets/ds/icons.svg. .seg, .tab and details are copied from home.css until they move into components.css. */

/* ---------- shared pieces this page needs (candidates for components.css) ---------- */
.seg { all: unset; box-sizing: border-box; padding: var(--space-3) var(--space-5); min-height: 44px; border-radius: var(--radius-pill);
  font-size: var(--text-small); font-weight: 500; cursor: pointer; display: inline-flex; align-items: center; gap: var(--space-2);
  transition: background var(--dur-calm) var(--ease-enter), color var(--dur-calm); }
.tab { all: unset; box-sizing: border-box; cursor: pointer; transition: background var(--dur-calm), border-color var(--dur-calm), color var(--dur-calm); }
@keyframes ds-spin { to { transform: rotate(360deg); } }
@keyframes ds-breath { 0%, 100% { opacity: .72; transform: scale(.96); } 50% { opacity: 1; transform: scale(1.04); } }
@keyframes ds-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes ds-rise { from { transform: translateY(12px); } }
@keyframes ds-draw { from { stroke-dashoffset: 140; } to { stroke-dashoffset: 0; } }
.ds-b1 { width: 720px; height: 540px; left: 42%; top: 4%; background: radial-gradient(closest-side, rgb(var(--sage-glow) / .2), transparent); animation: drift var(--dur-drift) ease-in-out infinite alternate; }
.ds-b2 { width: 440px; height: 440px; left: 4%; top: 26%; background: radial-gradient(closest-side, rgb(var(--ink-rgb) / .1), transparent); animation: drift 26s ease-in-out infinite alternate-reverse; }

/* ---------- hero ---------- */
.ds-hero { position: relative; padding: 128px 0 var(--space-24); }
.ds-hero__row { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; }
.ds-hero__words { flex: 1 1 620px; min-width: 0; display: flex; flex-direction: column; gap: 26px; }
.ds-h1 { margin: 0; font-weight: 500; font-size: clamp(52px, 7.4vw, 100px); line-height: .95; letter-spacing: -.035em; }
.ds-jump { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-2); }
.ds-jump a { display: inline-flex; align-items: center; min-height: 40px; padding: 0 var(--space-4); border-radius: var(--radius-pill);
  font-size: var(--text-small); color: var(--ink-2); text-decoration: none; border: 1px solid rgb(var(--fg) / .12); background: rgb(var(--fg) / .03);
  transition: color var(--dur-quick), background var(--dur-quick), border-color var(--dur-quick), transform var(--dur-calm) var(--ease-enter); }
.ds-jump a:hover { color: var(--ink-max); background: rgb(var(--glow) / .08); border-color: rgb(var(--glow) / .3); transform: translateY(-2px); }

.ds-stack { flex: 0 1 380px; display: grid; grid-template-columns: repeat(2, 168px); grid-auto-rows: 168px; gap: var(--space-4); justify-content: center; }
.ds-tile { position: relative; border-radius: var(--radius-card); padding: var(--space-5); display: flex; flex-direction: column; justify-content: space-between; animation: ds-float 7s ease-in-out infinite; }
.ds-tile .mono { font-size: 10.5px; letter-spacing: .12em; color: var(--ink-4); }
.ds-tile--type { rotate: -3deg; }
.ds-tile--type .disp { font-size: 76px; line-height: .9; font-weight: 500; letter-spacing: -.03em; color: var(--ink-head); }
.ds-tile--dots { animation-delay: -1.8s; rotate: 2deg; translate: 0 var(--space-6); }
.ds-tile--dots { display: grid; grid-template-columns: repeat(2, 1fr); align-content: start; gap: var(--space-3); }
.ds-tile--dots i { display: block; aspect-ratio: 1; border-radius: 50%; box-shadow: inset 0 1px 0 rgb(var(--fg) / .25); }
.ds-tile--dots i:first-child { box-shadow: 0 0 24px rgb(var(--glow) / .55); }
.ds-tile--dots .mono { grid-column: 1 / -1; align-self: end; }
.ds-tile--mark { animation-delay: -3.4s; display: grid; place-items: center; rotate: 2deg; }
.ds-tile--mark svg { width: 104px; height: 104px; filter: drop-shadow(0 0 28px rgb(var(--sage-mint-rgb) / .45)); }
.ds-spin { animation: ds-spin 16s linear infinite; transform-origin: 50% 50%; }
.ds-tile--curve { animation-delay: -5s; rotate: -2deg; translate: 0 var(--space-6); }
.ds-tile--curve svg { width: 100%; height: auto; }
.ds-draw { stroke-dasharray: 140; animation: ds-draw 2.4s var(--ease-enter) 600ms both; }

/* ---------- sections ---------- */
.ds-sec { position: relative; padding: 0 0 var(--space-24); }
.ds-sec.lit { padding: 0 var(--space-4) var(--space-24); }
.ds-head { display: flex; flex-direction: column; gap: var(--space-4); max-width: 760px; margin-bottom: var(--space-12); }
.ds-head__tools { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); margin-top: var(--space-2); }
.ds-note { font-size: var(--text-small); line-height: 1.6; color: var(--ink-4); margin: 0; }
.ds-sec code, .ds-hero code { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); }

/* ---------- colour ---------- */
.ds-colours { display: flex; flex-direction: column; gap: var(--space-16); min-height: 400px; }
.ds-cgroup__head { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: var(--space-1) var(--space-4); margin-bottom: var(--space-5);
  padding-bottom: var(--space-4); border-bottom: 1px solid rgb(var(--fg) / .08); }
.ds-cgroup__head h3 { margin: 0; font-size: 26px; font-weight: 500; letter-spacing: -.02em; color: var(--ink-head); }
.ds-cgroup__head p { margin: 0; grid-column: 1 / -1; grid-row: 2; font-size: 15px; color: var(--ink-3); max-width: 620px; }
.ds-cgroup__n { justify-self: end; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-4); }
.ds-swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(188px, 100%), 1fr)); gap: var(--space-3); }
.ds-sw { display: flex; flex-direction: column; border-radius: var(--radius-tile); overflow: hidden; background: var(--surface);
  border: 1px solid rgb(var(--fg) / .08); transition: transform var(--dur-calm) var(--ease-enter), border-color var(--dur-calm); }
.ds-sw:hover { transform: translateY(-3px); border-color: rgb(var(--glow) / .3); }
.ds-sw__live { position: relative; height: 92px; border-bottom: 1px solid rgb(var(--fg) / .08); }
.ds-sw__live--alpha { background: conic-gradient(rgb(var(--fg) / .1) 25%, transparent 0 50%, rgb(var(--fg) / .1) 0 75%, transparent 0) 0 0 / 14px 14px; }
.ds-sw__live span { position: absolute; inset: 0; transition: background var(--dur-screen) var(--ease-enter); }
.ds-sw__body { display: flex; flex-direction: column; gap: 6px; padding: var(--space-3) 14px 14px; flex: 1; }
.ds-sw__name { font-size: 12.5px !important; color: var(--ink) !important; font-weight: 500; word-break: break-all; }
.ds-sw__role { font-size: 13px; line-height: 1.45; color: var(--ink-3); }
.ds-sw__vals { display: flex; flex-direction: column; gap: var(--space-1); margin-top: auto; padding-top: 6px; }
.ds-sw__v { display: flex; align-items: center; gap: var(--space-2); min-width: 0; }
.ds-sw__v i { flex: none; width: 12px; height: 12px; border-radius: 50%; box-shadow: 0 0 0 1px rgb(var(--fg) / .18); }
.ds-sw__t { flex: none; width: 34px; font-size: 11px; color: var(--ink-4); }
.ds-sw__v code { font-size: 11px !important; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- type ---------- */
.ds-type { display: flex; flex-direction: column; }
.ds-type__row { display: grid; grid-template-columns: 240px 1fr; gap: var(--space-8); align-items: center; padding: var(--space-8) 0; border-top: 1px solid rgb(var(--fg) / .08); }
.ds-type__row:last-child { border-bottom: 1px solid rgb(var(--fg) / .08); }
.ds-type__meta { display: flex; flex-direction: column; gap: 6px; }
.ds-type__role { font: 500 19px/1.2 var(--font-display); letter-spacing: -.01em; color: var(--ink-head); }
.ds-type__font { font-size: var(--text-small); color: var(--accent-2); }
.ds-type__size b { font-weight: 500; color: var(--ink-2); }
.ds-type__sample { margin: 0; min-width: 0; color: var(--ink); }
.ds-s-display { font-size: var(--text-hero); font-weight: 500; line-height: .95; letter-spacing: -.035em; color: var(--ink-head); }
.ds-s-display em { color: var(--accent); }
.ds-s-heading { font-size: var(--text-h2); font-weight: 500; line-height: 1.02; letter-spacing: -.04em; color: var(--ink-head); }
.ds-s-lede { margin: 0 0 var(--space-3); font-size: var(--text-lede); line-height: 1.6; color: var(--ink-2); max-width: 620px; }
.ds-s-body { margin: 0 0 var(--space-3); font-size: var(--text-body); line-height: 1.6; color: var(--ink-3); max-width: 620px; }
.ds-s-small { margin: 0; font-size: var(--text-small); color: var(--ink-4); }
.ds-s-labels { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4) var(--space-6); }
.ds-s-mono { font-size: var(--text-eyebrow); letter-spacing: .12em; color: var(--accent-2); }
.ds-s-mono--ink { color: var(--ink-3); padding: 6px var(--space-3); border-radius: var(--radius-pill); border: 1px solid rgb(var(--fg) / .14); }
.ds-s-hand { font-size: 40px; line-height: 1.1; color: var(--ink-2); rotate: -2deg; transform-origin: left center; }

/* ---------- space and corners ---------- */
.ds-space { padding: var(--space-8); display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--space-12); align-items: end; }
.ds-space__steps { display: flex; align-items: flex-end; gap: var(--space-3); flex-wrap: wrap; }
.ds-step { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); min-width: 32px; }
.ds-step i { display: block; border-radius: 3px; background: linear-gradient(180deg, rgb(var(--glow) / .55), rgb(var(--glow) / .22));
  box-shadow: inset 0 0 0 1px rgb(var(--glow) / .6); }
.ds-step b { font: 500 13px/1 var(--font-display); color: var(--ink); }
.ds-step code { font-size: 10.5px !important; color: var(--ink-4) !important; }
.ds-layout { display: flex; flex-direction: column; gap: var(--space-4); }
.ds-layout__row { display: grid; grid-template-columns: 112px 1fr auto; gap: var(--space-4); align-items: center; font-size: var(--text-small); color: var(--ink-2); }
.ds-layout__bar { height: 8px; border-radius: var(--radius-pill); background: rgb(var(--fg) / .06); overflow: hidden; }
.ds-layout__bar i { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--accent); transition: width 1200ms var(--ease-enter); }
.ds-corners { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); margin-top: var(--space-3); }
.ds-corner { margin: 0; padding: var(--space-6); border-radius: var(--radius-card); background: rgb(var(--fg) / .02); border: 1px solid rgb(var(--fg) / .07);
  display: flex; flex-direction: column; gap: var(--space-5); }
.ds-corner__shape { height: 132px; background: radial-gradient(90% 90% at 20% 0%, rgb(var(--glow) / .22), transparent 70%), rgb(var(--fg) / .03);
  border: 1.5px solid rgb(var(--glow) / .55); border-right-style: dashed; border-bottom-style: dashed; }
.ds-corner__shape--pill { height: 64px; margin: 34px 0; }
.ds-corner figcaption { display: flex; flex-direction: column; gap: var(--space-1); }
.ds-corner b, .ds-curve b, .ds-move figcaption b, .ds-comp figcaption b, .ds-lane-group__label b { font: 500 16px/1.3 var(--font-display); color: var(--ink); }

/* ---------- motion ---------- */
.ds-motion { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: var(--space-3); }
.ds-curves { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-6); }
.ds-curve { margin: 0; display: grid; grid-template-columns: 112px 1fr; gap: var(--space-5); align-items: center; }
.ds-curve svg { width: 112px; height: 112px; border-radius: var(--radius-tile); background: rgb(var(--fg) / .03); border: 1px solid rgb(var(--fg) / .07); }
.ds-curve__grid { stroke: rgb(var(--fg) / .16); stroke-width: 1; }
.ds-curve__line { stroke-width: 2.6; stroke-linecap: round; stroke-dasharray: 160; stroke-dashoffset: 160; }
.go .ds-curve__line { animation: ds-draw 1400ms var(--ease-enter) forwards; stroke-dasharray: 160; }
.ds-curve figcaption { display: flex; flex-direction: column; gap: var(--space-1); }
.ds-curve figcaption > span { font-size: var(--text-small); line-height: 1.5; color: var(--ink-3); }
.ds-lanes { padding: var(--space-6) var(--space-8); display: flex; flex-direction: column; gap: var(--space-5); justify-content: center; }
.ds-lanes__key { display: flex; gap: var(--space-5); font-size: 13px; color: var(--ink-3); }
.ds-lanes__key span { display: inline-flex; align-items: center; gap: var(--space-2); }
.ds-key { width: 10px; height: 10px; border-radius: 50%; }
.ds-key--enter { background: var(--accent); box-shadow: 0 0 10px rgb(var(--glow) / .7); }
.ds-key--exit { background: var(--ink-2); }
.ds-lane-group { display: grid; grid-template-columns: 196px 1fr; grid-template-rows: auto auto; column-gap: var(--space-6); row-gap: 10px; align-items: center; }
.ds-lane-group__label { grid-row: span 2; display: flex; flex-direction: column; gap: 2px; }
.ds-lane-group__label span { font-size: 12.5px; color: var(--ink-4); line-height: 1.4; }
.ds-lane { position: relative; height: 18px; border-radius: var(--radius-pill); background: rgb(var(--fg) / .05); box-shadow: inset 0 0 0 1px rgb(var(--fg) / .06); }
.ds-lane i { position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgb(var(--glow) / .8); }
.ds-lane--exit i { background: var(--ink-2); box-shadow: none; }
.go .ds-lane i { left: calc(100% - 16px); transition: left var(--d) var(--e), opacity var(--d) var(--e); }
.go .ds-lane--exit i { opacity: .15; }
.ds-moves { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); }
.ds-move { margin: 0; padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-4); }
.ds-move__stage { height: 168px; border-radius: var(--radius-tile); display: grid; place-items: center; overflow: hidden; position: relative;
  background: radial-gradient(80% 70% at 50% 30%, rgb(var(--glow) / .1), transparent 70%), rgb(var(--fg) / .02); border: 1px solid rgb(var(--fg) / .06); }
.ds-move figcaption { display: flex; flex-direction: column; gap: var(--space-1); padding: 0 var(--space-1) var(--space-1); }
.ds-move figcaption > span { font-size: var(--text-small); line-height: 1.5; color: var(--ink-3); }
.ds-develop { width: 200px; padding: 14px; border-radius: 16px; background: var(--mist); color: var(--paper-ink); display: flex; flex-direction: column; gap: 7px;
  box-shadow: 0 16px 40px rgb(var(--shade) / calc(.4 * var(--shade-k))); }
.ds-develop b { font-size: 17px; font-weight: 500; }
.ds-develop i { display: block; height: 5px; border-radius: 3px; background: var(--paper-line); }
.ds-develop .ds-pill { align-self: flex-start; padding: 3px 8px; font-size: 9.5px; }
.ds-develop--go > * { animation: develop var(--dur-screen) var(--ease-enter) both; }
.ds-develop--go > :nth-child(2) { animation-duration: 900ms; animation-delay: 40ms; }
.ds-develop--go > :nth-child(3) { animation-duration: 900ms; animation-delay: 80ms; }
.ds-develop--go > :nth-child(4) { animation-duration: 900ms; animation-delay: 120ms; }
.ds-develop--go > :nth-child(5) { animation-duration: 900ms; animation-delay: 160ms; }
.ds-orb { width: 96px; height: 96px; border-radius: 50%; position: relative; background: radial-gradient(circle at 35% 30%, var(--k-a7d3c3), var(--k-4e9282) 55%, var(--k-23574b));
  box-shadow: 0 0 48px rgb(var(--glow) / .45); animation: ds-breath var(--dur-breath) ease-in-out infinite; }
.ds-orb span { position: absolute; inset: -8px; border-radius: 50%; border: 1.5px solid transparent; border-top-color: rgb(var(--glow) / .9); animation: ds-spin 3s linear infinite; }
.ds-drift { position: absolute; width: 140px; height: 140px; left: 10%; top: 4%; border-radius: 50%; filter: blur(20px);
  background: radial-gradient(closest-side, rgb(var(--sage-glow) / .8), transparent); animation: drift calc(var(--dur-drift) / 4) ease-in-out infinite alternate; }
.ds-press { min-height: 48px; }
.ds-press:active { transform: scale(var(--press)); }

/* ---------- components ---------- */
.ds-comps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); }
.ds-comp { margin: 0; padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-4); }
.ds-comp--wide { grid-column: span 2; }
.ds-comp--full { grid-column: 1 / -1; }
.ds-comp__stage { min-height: 168px; flex: 1; border-radius: var(--radius-tile); display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; justify-content: center;
  padding: var(--space-6); position: relative; background: rgb(var(--fg) / .02); border: 1px solid rgb(var(--fg) / .06); }
.ds-comp__stage--col { flex-direction: column; flex-wrap: nowrap; gap: var(--space-3); }
.ds-comp__stage--well { background: radial-gradient(80% 70% at 50% 20%, rgb(var(--glow) / .1), transparent 70%), rgb(var(--fg) / .02); }
.ds-comp figcaption { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-1) var(--space-3); padding: 0 var(--space-1) var(--space-1); font-size: 13px; color: var(--ink-4); }
.ds-pill { background: var(--accent-soft); color: var(--on-accent-soft); }
.ds-pill--ocean { background: var(--ocean-soft); color: var(--ocean); }
.ds-pill--plum { background: var(--plum-soft); color: var(--plum); }
.ds-mini-h { font-size: 28px; font-weight: 500; letter-spacing: -.03em; color: var(--ink-head); text-align: center; }
.ds-demo-card { width: 100%; max-width: 260px; padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-1); border-radius: var(--radius-tile); }
.ds-demo-card b { font-size: 15px; font-weight: 600; margin-top: var(--space-2); }
.ds-demo-card > span:last-child { font-size: var(--text-small); color: var(--ink-3); }
.ds-demo-card__ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: rgb(var(--glow) / .1); }
.ds-demo-paper { width: 100%; max-width: 240px; padding: 18px; display: flex; flex-direction: column; gap: var(--space-2); border-radius: var(--radius-tile); rotate: -2deg; }
.ds-demo-paper .mono { font-size: 10px; letter-spacing: .12em; color: var(--sage-600); }
.ds-demo-paper b { font-size: 19px; font-weight: 500; }
.ds-demo-paper i { display: block; height: 5px; border-radius: 3px; background: var(--paper-line); }
.ds-comp__stage--glass { overflow: hidden; }
.ds-glass-blob { position: absolute; width: 150px; height: 150px; left: 18%; top: 10%; border-radius: 50%; background: radial-gradient(circle at 35% 35%, var(--accent), rgb(var(--sage-glow) / .3) 60%, transparent 72%);
  animation: drift 7s ease-in-out infinite alternate; }
.ds-demo-glass { position: relative; padding: var(--space-4) var(--space-5); border-radius: var(--radius-tile); border: 1px solid rgb(var(--fg) / .12); box-shadow: inset 0 1px 0 rgb(var(--fg) / .12);
  display: flex; align-items: center; gap: 10px; font-size: var(--text-small); color: var(--ink); }
.ds-demo-glass__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px rgb(var(--glow) / .9); }
.ds-comp__stage--tip { padding-top: 72px; }
.ds-demo-term { margin: 0; font-size: 17px; line-height: 1.6; color: var(--ink-2); text-align: center; }
.ds-segs { display: inline-flex; gap: var(--space-1); padding: var(--space-1); border-radius: var(--radius-pill); background: rgb(var(--fg) / .05); border: 1px solid rgb(var(--fg) / .1); }
.ds-seg-off { color: var(--ink-3); }
.ds-seg-off:hover { color: var(--ink-max); }
.ds-seg-on { background: var(--ink); color: var(--paper-ink-flip-2); }
.ds-seg-on--accent { background: var(--accent); color: var(--on-accent); }
.ds-seg-says { font-size: 13px; color: var(--ink-3); animation: develop var(--dur-screen) var(--ease-enter) both; }
.ds-comp__stage--tabs { flex-direction: column; align-items: stretch; justify-content: center; gap: var(--space-4); }
.ds-tabs { display: flex; gap: var(--space-1); padding: var(--space-1); border-radius: var(--radius-pill); background: rgb(var(--fg) / .04); border: 1px solid rgb(var(--fg) / .08); align-self: flex-start; }
.ds-tab { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; padding: 0 var(--space-5); border-radius: var(--radius-pill); font: 500 15px/1 var(--font-display); color: var(--ink-3); border: 1px solid transparent; }
.ds-tab .mono { font-size: 11px; color: var(--ink-4); }
.ds-tab:hover { color: var(--ink-max); background: rgb(var(--fg) / .05); }
.ds-tab--on { color: var(--ink-max); background: rgb(var(--fg) / .08); border-color: rgb(var(--fg) / .14); }
.ds-tab--on .mono { color: var(--accent); }
.ds-tabpanel p { margin: 0; font-size: 17px; line-height: 1.6; color: var(--ink-2); max-width: 560px; }
.ds-comp__stage--faq { display: block; padding: 0 var(--space-6); }
.ds-faq { border-bottom: 1px solid rgb(var(--fg) / .08); }
.ds-faq:last-child { border-bottom: 0; }
.ds-faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--space-5); padding: 22px var(--space-1);
  font: 500 18px/1.35 var(--font-sans); color: var(--ink); }
.ds-faq summary::-webkit-details-marker { display: none; }
.ds-faq .plus { flex: none; width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgb(var(--fg) / .14); display: grid; place-items: center; color: var(--ink);
  transition: transform var(--dur-calm) var(--ease-enter), background var(--dur-calm); }
.ds-faq[open] .plus { transform: rotate(45deg); background: rgb(var(--ink-rgb) / .12); }
.ds-faq p { margin: 0 0 22px; padding: 0 var(--space-1); color: var(--ink-3); font-size: var(--text-body); line-height: 1.65; animation: develop 500ms var(--ease-enter) both; }

/* ---------- icons ---------- */
.ds-icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: var(--space-2); }
.ds-icon { margin: 0; aspect-ratio: 1; border-radius: var(--radius-tile); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--space-3);
  background: rgb(var(--fg) / .025); border: 1px solid rgb(var(--fg) / .07); color: var(--ink-1); padding: var(--space-2);
  animation: ds-rise var(--dur-screen) var(--ease-enter) backwards; animation-delay: calc(var(--i, 0) * 20ms);
  transition: color var(--dur-quick), background var(--dur-calm), border-color var(--dur-calm), transform var(--dur-calm) var(--ease-enter); }
.ds-icon:hover { color: var(--accent); background: rgb(var(--glow) / .07); border-color: rgb(var(--glow) / .3); transform: translateY(-3px); }
.ds-icon svg { display: block; }
.ds-icon figcaption { font-size: 10.5px; color: var(--ink-4); text-align: center; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ds-empty { grid-column: 1 / -1; margin: 0; padding: var(--space-12) var(--space-6); border-radius: var(--radius-card); text-align: center; font-size: var(--text-body); color: var(--ink-3);
  border: 1.5px dashed rgb(var(--fg) / .14); }

/* ---------- the brand ---------- */
.ds-brand { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-3); }
.ds-anatomy { padding: var(--space-8); display: flex; flex-direction: column; align-items: center; gap: var(--space-8); }
.ds-anatomy__svg { width: min(300px, 100%); height: auto; overflow: visible; filter: drop-shadow(0 0 40px rgb(var(--sage-mint-rgb) / .3)); }
.ds-anatomy__box { fill: none; stroke: rgb(var(--fg) / .3); stroke-width: .6; stroke-dasharray: 2 2; }
.ds-anatomy__ring { fill: none; stroke: var(--accent); stroke-width: .5; stroke-dasharray: 1.5 1.5; opacity: .8; }
@keyframes ds-march { to { stroke-dashoffset: -12; } }
.ds-anatomy__ring { animation: ds-march 2.4s linear infinite; }
.ds-anatomy__key { list-style: none; margin: 0; padding: 0; width: 100%; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4) var(--space-6); }
.ds-anatomy__key li { display: grid; grid-template-columns: 16px 1fr; column-gap: 10px; align-items: center; }
.ds-anatomy__key i { width: 14px; height: 14px; border-radius: 50%; box-shadow: 0 0 0 1px rgb(var(--fg) / .2); }
.ds-anatomy__key i.ds-anatomy__dash { border-radius: 3px; box-shadow: none; border: 1px dashed rgb(var(--fg) / .45); }
.ds-anatomy__key b { font: 500 15px/1.3 var(--font-display); color: var(--ink); }
.ds-anatomy__key span { grid-column: 2; font-size: 13px; color: var(--ink-3); }
.ds-brand__side { display: flex; flex-direction: column; gap: var(--space-3); }
.ds-sizes { padding: var(--space-8) var(--space-6) var(--space-6); display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.ds-size { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.ds-size svg { display: block; transition: transform var(--dur-screen) var(--ease-enter); }
.ds-size:hover svg { transform: rotate(-30deg) scale(1.06); }
.ds-size code { font-size: 11px !important; color: var(--ink-4) !important; }
.ds-lockups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.ds-lockup { padding: var(--space-8) var(--space-6) var(--space-5); display: flex; flex-direction: column; align-items: center; gap: var(--space-6); border-radius: var(--radius-card); }
.ds-lockup__row { display: flex; align-items: center; gap: 10px; }
.ds-lockup__row .serif { font-size: 40px; font-weight: 500; letter-spacing: -.02em; line-height: 1; }
.ds-lockup--ground .serif { color: var(--ink); }
.ds-lockup--paper { background: var(--mist); }
.ds-lockup--paper .serif { color: var(--paper-ink); }
.ds-lockup--paper code { color: var(--paper-ink-2) !important; }
.ds-brand__rule { padding: 0 var(--space-2); }

/* ---------- light theme ---------- */
:root[data-theme="light"] .ds-sw { background: #FFFFFF; }
:root[data-theme="light"] .ds-tile--mark svg, :root[data-theme="light"] .ds-anatomy__svg { filter: drop-shadow(0 10px 24px rgb(var(--sage-600-rgb) / .22)); }
:root[data-theme="light"] .ds-develop { box-shadow: 0 0 0 1px rgb(var(--ink-light-rgb) / .08), 0 16px 40px rgb(var(--ink-light-rgb) / .1); }
:root[data-theme="light"] .ds-orb { box-shadow: 0 0 40px rgb(var(--sage-400-rgb) / .35); }
:root[data-theme="light"] .ds-orb span { border-top-color: var(--accent); }
:root[data-theme="light"] .ds-drift { background: radial-gradient(closest-side, rgb(var(--sage-400-rgb) / .55), transparent); }
:root[data-theme="light"] .ds-glass-blob { background: radial-gradient(circle at 35% 35%, rgb(var(--sage-400-rgb) / .9), rgb(var(--sage-400-rgb) / .25) 60%, transparent 72%); }

/* ---------- narrower screens ---------- */
@media (max-width: 1080px) {
  .ds-comp--full { grid-column: 1 / -1; }
  .ds-motion { grid-template-columns: 1fr; }
  .ds-moves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ds-comps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ds-brand { grid-template-columns: 1fr; }
  .ds-space { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .ds-corners { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ds-type__row { grid-template-columns: 1fr; gap: var(--space-4); }
  .ds-stack { display: none; }
}
@media (max-width: 640px) {
  .ds-hero { padding: var(--space-16) 0 var(--space-16); }
  .ds-sec { padding-bottom: var(--space-16); }
  .ds-sec.lit { padding: 0 var(--space-2) var(--space-16); }
  .ds-sec.lit > .wrap { border-radius: var(--radius-card); padding-top: var(--space-12); padding-bottom: var(--space-12); }
  .ds-head { margin-bottom: var(--space-8); }
  .ds-swatches { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); }
  .ds-sw__live { height: 72px; }
  .ds-sw__t { width: 30px; }
  .ds-comps, .ds-lockups { grid-template-columns: 1fr; }
  .ds-moves { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); }
  .ds-move { padding: var(--space-3); gap: var(--space-3); }
  .ds-move__stage { height: 128px; }
  .ds-develop { scale: .72; }
  .ds-orb { width: 72px; height: 72px; }
  .ds-press { min-height: 44px; padding: 0 var(--space-4); font-size: var(--text-small); }
  .ds-comp--wide, .ds-comp--full { grid-column: auto; }
  .ds-space { padding: var(--space-5); }
  .ds-space__steps { gap: var(--space-2); }
  .ds-step { min-width: 22px; }
  .ds-step:nth-child(n+9) { display: none; }
  .ds-layout__row { grid-template-columns: 96px 1fr; }
  .ds-layout__row code { grid-column: 2; margin-top: calc(-1 * var(--space-3)); }
  .ds-corners { gap: var(--space-2); }
  .ds-corner { padding: var(--space-4); }
  .ds-lanes { padding: var(--space-5); }
  .ds-lane-group { grid-template-columns: 1fr; }
  .ds-lane-group__label { grid-row: auto; flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: var(--space-2); }
  .ds-curves { padding: var(--space-5); }
  .ds-curve { grid-template-columns: 88px 1fr; gap: var(--space-4); }
  .ds-curve svg { width: 88px; height: 88px; }
  .ds-anatomy { padding: var(--space-6) var(--space-5); }
  .ds-anatomy__key { grid-template-columns: 1fr; }
  .ds-sizes { justify-content: space-between; gap: var(--space-3); flex-wrap: nowrap; }
  .ds-size:last-child { display: none; }
  .ds-comp__stage--faq { padding: 0 var(--space-4); }
  .ds-tabs { align-self: stretch; }
  .ds-tab { flex: 1; justify-content: center; padding: 0 var(--space-3); }
  .ds-icons { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  .ds-tile, .ds-spin, .ds-anatomy__ring, .ds-orb, .ds-orb span, .ds-drift, .ds-glass-blob, .ds-b1, .ds-b2 { animation: none !important; }
  .ds-curve__line { stroke-dashoffset: 0; }
}