/*
 * BIOTEN Developer V2.1
 * Four-domain-first developer platform.
 * Design read: technical editorial + packaging engineering workspace.
 * Dials: variance 6, motion 3, density 5.
 */

html { scroll-behavior: smooth; }

body.dv21-page,
body.dv21-domain-page {
  --dv21-shadow: 0 24px 60px rgba(7, 31, 49, .1);
  --dv21-dark: #092638;
  --dv21-dark-2: #12384b;
  --dv21-lime: #a9d35e;
}

[data-home-domain-panel][hidden] { display: none !important; }

.dv21-hero {
  overflow: hidden;
  border-bottom: 1px solid var(--dv2-line);
  background: var(--dv2-surface);
}

.dv21-hero__grid {
  display: grid;
  min-height: min(750px, calc(100dvh - 72px));
  grid-template-columns: minmax(0, 1.04fr) minmax(480px, .96fr);
  align-items: stretch;
}

.dv21-hero__copy {
  align-self: center;
  padding: 84px clamp(42px, 5vw, 78px) 76px 0;
}

html body.dv2-page #main-content .dv21-hero h1 {
  max-width: 690px !important;
  margin: 0 !important;
  color: var(--dv2-ink) !important;
  font-size: clamp(3.1rem, 4.15vw, 3.65rem) !important;
  font-weight: 590 !important;
  letter-spacing: -.052em !important;
  line-height: 1.04 !important;
  text-wrap: balance;
}

.dv21-hero__lead {
  max-width: 660px;
  margin: 26px 0 0;
  color: var(--dv2-copy);
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.78;
}

.dv21-hero__people {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 34px 0 0;
  color: var(--dv2-muted);
  font-family: var(--dv2-mono);
  font-size: .7rem;
  letter-spacing: .06em;
}

.dv21-hero__people span {
  position: relative;
  padding-left: 13px;
}

.dv21-hero__people span::before {
  position: absolute;
  top: .55em;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--dv2-accent-bright);
  content: "";
}

.dv21-hero__media {
  position: relative;
  min-height: 660px;
  margin: 0;
  overflow: hidden;
  background: #dbe3df;
}

.dv21-hero__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.dv21-hero__media::after {
  position: absolute;
  inset: 0;
  border-left: 1px solid rgba(7, 31, 49, .18);
  background: linear-gradient(90deg, rgba(7, 31, 49, .12), transparent 26%);
  content: "";
  pointer-events: none;
}

.dv21-hero__media figcaption {
  position: absolute;
  z-index: 1;
  right: 18px;
  bottom: 18px;
  max-width: 390px;
  padding: 10px 12px;
  background: rgba(7, 31, 49, .88);
  color: rgba(255, 255, 255, .82);
  font-size: .66rem;
  line-height: 1.55;
}

/* Four-domain selector */
.dv21-domain-explorer {
  padding: clamp(82px, 9vw, 132px) 0 clamp(88px, 10vw, 140px);
  background: var(--dv2-canvas);
  scroll-margin-top: 126px;
}

.dv21-section-intro {
  max-width: 900px;
  margin-bottom: 44px;
}

.dv21-section-intro h2 {
  max-width: 850px;
  margin: 0;
  color: var(--dv2-ink);
  font-size: clamp(2.5rem, 5vw, 5.1rem);
  font-weight: 560;
  letter-spacing: -.055em;
  line-height: 1.01;
}

.dv21-section-intro > p:last-child {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--dv2-copy);
  line-height: 1.76;
}

.dv21-section-intro--split {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(280px, .78fr);
  align-items: end;
  gap: clamp(40px, 7vw, 108px);
}

.dv21-section-intro--split > p {
  margin: 0 0 7px !important;
}

.dv21-section-intro--compact h2 { font-size: clamp(2.2rem, 4.2vw, 4.25rem); }

.dv21-domain-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--dv2-line-strong);
  background: var(--dv2-line);
  gap: 1px;
}

html body.dv2-page #main-content button.dv21-domain-tab {
  position: relative !important;
  isolation: isolate !important;
  min-width: 0 !important;
  min-height: 332px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  justify-content: flex-start !important;
  gap: 0 !important;
  padding: 0 0 22px !important;
  overflow: hidden !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: var(--dv2-surface) !important;
  color: var(--dv2-ink) !important;
  -webkit-text-fill-color: currentColor !important;
  text-align: left !important;
  text-shadow: none !important;
  box-shadow: none !important;
  appearance: none !important;
  transform: none !important;
  transition: background .18s ease, color .18s ease !important;
}

html body.dv2-page #main-content button.dv21-domain-tab::before,
html body.dv2-page #main-content button.dv21-domain-tab::after {
  display: none !important;
  content: none !important;
}

html body.dv2-page #main-content button.dv21-domain-tab:hover {
  background: #f8fbfc !important;
  transform: none !important;
}

html body.dv2-page #main-content button.dv21-domain-tab[aria-selected="true"] {
  background: var(--dv21-dark) !important;
  color: #fff !important;
  box-shadow: inset 0 -5px 0 var(--dv21-lime) !important;
}

html body.dv2-page #main-content button.dv21-domain-tab:focus-visible {
  z-index: 2 !important;
  outline: 3px solid var(--dv2-focus) !important;
  outline-offset: -4px !important;
}

.dv21-domain-tab__media {
  height: 150px;
  display: block;
  margin-bottom: 20px;
  overflow: hidden;
  background: #dbe3df;
}

.dv21-domain-tab__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(.88) contrast(.98);
  transform: scale(2.55);
  transition: transform .22s ease, filter .22s ease;
}

[data-home-domain-tab="food"] .dv21-domain-tab__media img { transform-origin: 0 50%; }
[data-home-domain-tab="beauty"] .dv21-domain-tab__media img { transform-origin: 38% 50%; }
[data-home-domain-tab="medical"] .dv21-domain-tab__media img { transform-origin: 65% 50%; }
[data-home-domain-tab="specialty"] .dv21-domain-tab__media img { transform-origin: 100% 50%; }

.dv21-domain-tab:hover .dv21-domain-tab__media img { transform: scale(2.62); }
.dv21-domain-tab[aria-selected="true"] .dv21-domain-tab__media img { filter: saturate(1) contrast(1.04); }

.dv21-domain-tab__number,
.dv21-domain-tab > strong,
.dv21-domain-tab__copy {
  margin-inline: 22px;
}

.dv21-domain-tab__number {
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .66rem;
  font-weight: 760;
  letter-spacing: .08em;
}

.dv21-domain-tab[aria-selected="true"] .dv21-domain-tab__number { color: var(--dv21-lime); }

.dv21-domain-tab > strong {
  margin-top: 8px;
  font-size: clamp(1.02rem, 1.4vw, 1.22rem);
  font-weight: 680;
  line-height: 1.32;
}

.dv21-domain-tab__copy {
  margin-top: 10px;
  color: var(--dv2-muted);
  font-size: .78rem;
  line-height: 1.62;
}

.dv21-domain-tab[aria-selected="true"] .dv21-domain-tab__copy { color: rgba(255, 255, 255, .68); }

.dv21-domain-panels { margin-top: 24px; }

.dv21-domain-panel {
  padding: clamp(30px, 4vw, 54px);
  border: 1px solid var(--dv2-line);
  background: var(--dv2-surface);
  box-shadow: var(--dv21-shadow);
  animation: dv21-panel-in .18s ease both;
}

@keyframes dv21-panel-in {
  from { opacity: .55; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.dv21-domain-panel__intro {
  display: grid;
  grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr);
  align-items: end;
  gap: clamp(34px, 6vw, 90px);
  padding-bottom: 34px;
  border-bottom: 1px solid var(--dv2-line);
}

.dv21-domain-panel__intro h3 {
  margin: 12px 0 0;
  font-size: clamp(1.75rem, 3vw, 3rem);
  font-weight: 580;
  letter-spacing: -.04em;
  line-height: 1.08;
}

.dv21-domain-panel__intro > p {
  max-width: 780px;
  margin: 0;
  color: var(--dv2-ink-2);
  font-size: clamp(1.08rem, 1.65vw, 1.42rem);
  line-height: 1.62;
}

.dv21-domain-status {
  display: inline-flex;
  padding: 6px 9px;
  border: 1px solid var(--dv2-line-strong);
  color: var(--dv2-copy);
  font-family: var(--dv2-mono);
  font-size: .65rem;
  font-weight: 760;
  letter-spacing: .06em;
}

.dv21-domain-panel__body {
  display: grid;
  grid-template-columns: minmax(220px, .66fr) minmax(0, 1.34fr);
  gap: clamp(32px, 5vw, 72px);
  padding-top: 34px;
}

.dv21-problem-list > strong {
  display: block;
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .7rem;
  letter-spacing: .09em;
}

.dv21-problem-list ul {
  display: grid;
  gap: 10px;
  margin: 17px 0 0;
  padding: 0;
  list-style: none;
}

.dv21-problem-list li {
  position: relative;
  padding-left: 17px;
  color: var(--dv2-copy);
  font-size: .86rem;
  line-height: 1.55;
}

.dv21-problem-list li::before {
  position: absolute;
  top: .72em;
  left: 0;
  width: 6px;
  height: 1px;
  background: var(--dv2-accent);
  content: "";
}

.dv21-domain-path,
.dv21-progressive-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.dv21-domain-path li {
  position: relative;
  min-width: 0;
  padding: 0 15px 0 0;
}

.dv21-domain-path li:not(:last-child)::after {
  position: absolute;
  top: 8px;
  right: 8px;
  color: var(--dv2-line-strong);
  content: "→";
}

.dv21-domain-path span,
.dv21-progressive-steps span {
  display: block;
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .63rem;
  font-weight: 760;
  letter-spacing: .08em;
}

.dv21-domain-path strong {
  display: block;
  margin-top: 12px;
  font-size: .88rem;
}

.dv21-domain-path small {
  display: block;
  margin-top: 7px;
  color: var(--dv2-muted);
  font-size: .72rem;
  line-height: 1.54;
}

.dv21-domain-panel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--dv2-line);
}

.dv21-boundary-note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--dv2-accent);
  color: var(--dv2-muted);
  font-size: .76rem;
  line-height: 1.6;
}

/* Progressive path and participation */
.dv21-progressive {
  padding: clamp(84px, 10vw, 142px) 0;
  background: var(--dv21-dark);
  color: #fff;
}

.dv21-progressive .dv2-kicker { color: var(--dv21-lime); }
.dv21-progressive .dv21-section-intro h2 { color: #fff; }
.dv21-progressive .dv21-section-intro > p { color: rgba(255, 255, 255, .65); }

.dv21-progressive-steps {
  border-top: 1px solid rgba(255, 255, 255, .2);
}

.dv21-progressive-steps li {
  min-height: 210px;
  padding: 28px 26px 18px 0;
  border-right: 1px solid rgba(255, 255, 255, .14);
}

.dv21-progressive-steps li:not(:first-child) { padding-left: 24px; }
.dv21-progressive-steps span { color: var(--dv21-lime); }

.dv21-progressive-steps strong {
  display: block;
  margin-top: 40px;
  font-size: 1.08rem;
}

.dv21-progressive-steps p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, .62);
  font-size: .82rem;
  line-height: 1.65;
}

.dv21-principles {
  padding: clamp(80px, 9vw, 128px) 0;
  border-block: 1px solid var(--dv2-line);
  background: var(--dv2-surface-3);
}

.dv21-principles__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--dv2-line-strong);
  background: var(--dv2-line);
  gap: 1px;
}

.dv21-principles__grid article {
  min-height: 180px;
  padding: 24px 20px;
  background: var(--dv2-surface);
}

.dv21-principles__grid strong {
  display: block;
  font-size: .9rem;
  line-height: 1.45;
}

.dv21-principles__grid span {
  display: block;
  margin-top: 38px;
  color: var(--dv2-muted);
  font-size: .76rem;
  line-height: 1.62;
}

.dv21-network-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr 1fr;
  border-top: 1px solid var(--dv2-line-strong);
}

.dv21-network-grid article {
  min-height: 300px;
  padding: 30px 30px 26px 0;
  border-right: 1px solid var(--dv2-line);
}

.dv21-network-grid article:not(:first-child) { padding-left: 30px; }
.dv21-network-grid article:last-child { border-right: 0; }

.dv21-network-grid span {
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .68rem;
  font-weight: 760;
  letter-spacing: .1em;
}

.dv21-network-grid h3 {
  margin: 46px 0 0;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 590;
  letter-spacing: -.025em;
}

.dv21-network-grid p {
  margin: 14px 0 28px;
  color: var(--dv2-copy);
  line-height: 1.72;
}

/* Domain detail pages */
.dv21-domain-page #main-content { background: var(--dv2-canvas); }

.dv21-domain-hero {
  padding: 34px 0 clamp(70px, 8vw, 112px);
  border-bottom: 1px solid var(--dv2-line);
  background:
    linear-gradient(115deg, rgba(255,255,255,.98) 0 56%, rgba(220,231,234,.9) 56% 100%);
}

.dv21-domain-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, .88fr);
  align-items: end;
  gap: clamp(54px, 8vw, 120px);
  padding-top: clamp(58px, 8vw, 110px);
}

.dv21-domain-hero__copy .dv2-status { margin-bottom: 20px; }

html body.dv21-domain-page #main-content .dv21-domain-hero h1 {
  max-width: 800px !important;
  margin: 0 !important;
  color: var(--dv2-ink) !important;
  font-size: clamp(3.05rem, 5.7vw, 5.7rem) !important;
  font-weight: 560 !important;
  letter-spacing: -.058em !important;
  line-height: 1 !important;
}

.dv21-domain-summary {
  border-top: 3px solid var(--dv2-accent);
  background: var(--dv21-dark);
  color: #fff;
}

.dv21-domain-summary article {
  padding: 24px 26px;
  border-bottom: 1px solid rgba(255,255,255,.16);
}

.dv21-domain-summary article:last-child { border-bottom: 0; }

.dv21-domain-summary span {
  display: block;
  color: var(--dv21-lime);
  font-family: var(--dv2-mono);
  font-size: .65rem;
  font-weight: 760;
  letter-spacing: .08em;
}

.dv21-domain-summary strong {
  display: block;
  margin-top: 9px;
  font-size: .9rem;
  font-weight: 570;
  line-height: 1.6;
}

.dv21-domain-switch {
  position: sticky;
  z-index: 17;
  top: var(--header-height, 74px);
  border-bottom: 1px solid var(--dv2-line);
  background: rgba(247, 250, 251, .97);
  backdrop-filter: blur(16px);
}

.dv21-domain-switch .dv2-shell {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.dv21-domain-switch a {
  min-width: 0;
  padding: 18px 20px;
  border-right: 1px solid var(--dv2-line);
  color: var(--dv2-copy);
  font-size: .77rem;
  font-weight: 700;
  text-decoration: none;
}

.dv21-domain-switch a:first-child { border-left: 1px solid var(--dv2-line); }

.dv21-domain-switch a span {
  margin-right: 9px;
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .63rem;
}

.dv21-domain-switch a[aria-current="page"] {
  background: var(--dv21-dark);
  color: #fff;
  box-shadow: inset 0 -3px 0 var(--dv21-lime);
}

.dv21-domain-switch a[aria-current="page"] span { color: var(--dv21-lime); }

.dv21-domain-switch a:focus-visible,
.dv21-deep-links a:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid var(--dv2-focus);
  outline-offset: -4px;
}

.dv21-problem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--dv2-line);
  background: var(--dv2-line);
  gap: 1px;
}

.dv21-problem-grid article {
  min-height: 250px;
  padding: 25px;
  background: var(--dv2-surface);
}

.dv21-problem-grid article > span,
.dv21-deep-links a > span {
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .65rem;
  font-weight: 760;
  letter-spacing: .08em;
}

.dv21-problem-grid h3 {
  margin: 48px 0 0;
  font-size: 1.1rem;
  font-weight: 620;
}

.dv21-problem-grid p {
  margin: 13px 0 0;
  color: var(--dv2-copy);
  font-size: .84rem;
  line-height: 1.7;
}

.dv21-domain-stages {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--dv2-line-strong);
  list-style: none;
}

.dv21-domain-stages li {
  display: grid;
  grid-template-columns: 95px minmax(0, 1fr);
  gap: 28px;
  padding: 27px 0;
  border-bottom: 1px solid var(--dv2-line);
}

.dv21-domain-stages li > span {
  color: var(--dv2-accent);
  font-family: var(--dv2-mono);
  font-size: .72rem;
  font-weight: 760;
}

.dv21-domain-stages strong { font-size: 1.08rem; }

.dv21-domain-stages p {
  max-width: 820px;
  margin: 8px 0 0;
  color: var(--dv2-copy);
  line-height: 1.66;
}

.dv21-deep-links {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--dv2-line);
  background: var(--dv2-line);
  gap: 1px;
}

.dv21-deep-links a {
  min-height: 280px;
  padding: 25px 22px;
  background: var(--dv2-surface);
  color: var(--dv2-ink);
  text-decoration: none;
  transition: background .18s ease, color .18s ease;
}

.dv21-deep-links a:hover {
  background: var(--dv21-dark);
  color: #fff;
}

.dv21-deep-links strong {
  display: block;
  margin-top: 48px;
  font-size: 1rem;
  line-height: 1.42;
}

.dv21-deep-links p {
  margin: 13px 0 0;
  color: var(--dv2-copy);
  font-size: .78rem;
  line-height: 1.66;
}

.dv21-deep-links a:hover p { color: rgba(255,255,255,.66); }
.dv21-deep-links a:hover > span { color: var(--dv21-lime); }

.dv21-boundary {
  display: grid;
  grid-template-columns: minmax(300px, .85fr) minmax(0, 1.15fr);
  gap: clamp(50px, 8vw, 110px);
}

.dv21-boundary h2 {
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 4rem);
  font-weight: 560;
  letter-spacing: -.05em;
  line-height: 1.05;
}

.dv21-boundary > div:last-child {
  padding-top: 8px;
  color: var(--dv2-copy);
  line-height: 1.76;
}

.dv21-boundary ul { padding-left: 1.2em; }

@media (max-width: 1080px) {
  .dv21-hero__grid { grid-template-columns: minmax(0, 1fr) minmax(410px, .86fr); }
  .dv21-hero__copy { padding-right: 42px; }
  .dv21-domain-tab__copy { font-size: .73rem; }
  .dv21-domain-path { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px 0; }
  .dv21-domain-path li:not(:last-child)::after { display: none; }
  .dv21-progressive-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dv21-progressive-steps li { border-bottom: 1px solid rgba(255,255,255,.14); }
  .dv21-deep-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  .dv21-hero__grid { min-height: 0; grid-template-columns: 1fr; }
  .dv21-hero__copy { padding: 76px 0 58px; }
  .dv21-hero__media { min-height: 500px; }
  .dv21-domain-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dv21-domain-panel__intro,
  .dv21-domain-panel__body,
  .dv21-section-intro--split,
  .dv21-domain-hero__layout,
  .dv21-boundary { grid-template-columns: 1fr; }
  .dv21-domain-panel__intro { align-items: start; gap: 22px; }
  .dv21-domain-panel__body { gap: 34px; }
  .dv21-principles__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dv21-network-grid { grid-template-columns: 1fr; }
  .dv21-network-grid article { min-height: 220px; padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--dv2-line); }
  .dv21-network-grid article:not(:first-child) { padding-left: 0; }
  .dv21-domain-hero__layout { align-items: start; gap: 48px; }
  .dv21-domain-summary { max-width: 680px; }
  .dv21-domain-switch .dv2-shell { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dv21-domain-switch a { border-bottom: 1px solid var(--dv2-line); }
  .dv21-problem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  html { scroll-behavior: auto; }
  .dv21-hero__copy { padding: 58px 0 44px; }
  html body.dv2-page #main-content .dv21-hero h1 {
    font-size: clamp(2.65rem, 12.4vw, 3.7rem) !important;
    line-height: 1.03 !important;
  }
  .dv21-hero__lead { font-size: .97rem; }
  .dv21-hero__people { gap: 8px 14px; }
  .dv21-hero__media { min-height: 390px; }
  .dv21-hero__media figcaption { right: 12px; bottom: 12px; left: 12px; max-width: none; }
  .dv21-domain-explorer { padding-block: 72px 92px; }
  .dv21-section-intro { margin-bottom: 30px; }
  .dv21-section-intro h2 { font-size: clamp(2.35rem, 11vw, 3.5rem); }
  html body.dv2-page #main-content button.dv21-domain-tab { min-height: 222px !important; padding-bottom: 16px !important; }
  .dv21-domain-tab__media { height: 105px; margin-bottom: 14px; }
  .dv21-domain-tab__number,
  .dv21-domain-tab > strong,
  .dv21-domain-tab__copy { margin-inline: 14px; }
  .dv21-domain-tab__number { font-size: .57rem; }
  .dv21-domain-tab > strong { font-size: .93rem; }
  .dv21-domain-tab__copy { display: none; }
  .dv21-domain-panel { padding: 25px 20px; }
  .dv21-domain-panel__intro { padding-bottom: 25px; }
  .dv21-domain-panel__intro h3 { font-size: 1.72rem; }
  .dv21-domain-panel__intro > p { font-size: 1rem; }
  .dv21-domain-path { grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--dv2-line); }
  .dv21-domain-path li { padding: 17px 0; border-bottom: 1px solid var(--dv2-line); }
  .dv21-domain-path strong { margin-top: 7px; }
  .dv21-domain-path small { max-width: 36ch; }
  .dv21-domain-panel__actions { align-items: flex-start; flex-direction: column; }
  .dv21-progressive-steps { grid-template-columns: 1fr; }
  .dv21-progressive-steps li,
  .dv21-progressive-steps li:not(:first-child) { min-height: 0; padding: 24px 0; border-right: 0; }
  .dv21-progressive-steps strong { margin-top: 20px; }
  .dv21-principles__grid { grid-template-columns: 1fr; }
  .dv21-principles__grid article { min-height: 150px; }
  .dv21-principles__grid span { margin-top: 24px; }
  html body.dv21-domain-page #main-content .dv21-domain-hero h1 { font-size: clamp(2.6rem, 12.6vw, 4rem) !important; }
  .dv21-domain-hero { padding-top: 22px; }
  .dv21-domain-hero__layout { padding-top: 48px; gap: 38px; }
  .dv21-domain-switch { position: static; }
  .dv21-domain-switch a { min-height: 62px; padding: 14px 12px; font-size: .72rem; }
  .dv21-domain-switch a span { display: block; margin: 0 0 4px; }
  .dv21-problem-grid { grid-template-columns: 1fr; }
  .dv21-problem-grid article { min-height: 205px; }
  .dv21-domain-stages li { grid-template-columns: 52px minmax(0, 1fr); gap: 14px; }
  .dv21-deep-links { grid-template-columns: 1fr; }
  .dv21-deep-links a { min-height: 230px; }
}

@media (max-width: 380px) {
  .dv21-domain-tab__media { height: 88px; }
  html body.dv2-page #main-content button.dv21-domain-tab { min-height: 205px !important; }
  .dv21-domain-tab > strong { font-size: .86rem; }
  .dv21-domain-panel { padding-inline: 16px; }
  .dv21-domain-switch .dv2-shell { width: 100%; }
  .dv21-domain-switch a { padding-inline: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .dv21-domain-panel { animation: none; }
  .dv21-domain-tab__media img,
  .dv21-deep-links a { transition: none; }
  .dv21-domain-tab:hover .dv21-domain-tab__media img { transform: scale(2.55); }
}

@media (forced-colors: active) {
  .dv21-domain-tab,
  .dv21-domain-panel,
  .dv21-domain-switch a,
  .dv21-domain-summary,
  .dv21-deep-links a { forced-color-adjust: auto; }
}