.dtp-page-shell {
  width: min(1500px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

.dtp-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: 30px;
  padding: clamp(28px, 5vw, 68px);
  border: 1px solid rgba(13, 106, 99, 0.18);
  border-radius: 30px;
  background:
    radial-gradient(circle at 88% 15%, rgba(197, 116, 64, 0.2), transparent 28%),
    linear-gradient(135deg, rgba(247, 252, 249, 0.98), rgba(229, 243, 238, 0.96));
  box-shadow: 0 28px 80px rgba(29, 75, 73, 0.13);
}

.dtp-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -130px;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(13, 106, 99, 0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(13, 106, 99, 0.04), 0 0 0 78px rgba(13, 106, 99, 0.03);
  pointer-events: none;
}

.dtp-hero-copy,
.dtp-hero-side {
  position: relative;
  z-index: 1;
}

.dtp-hero-copy > p:first-child,
.dtp-course-intro > p:first-child {
  margin: 0 0 10px;
  color: #0b746b;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.dtp-hero h1 {
  max-width: 920px;
  margin: 0;
  color: #102b2c;
  font-size: clamp(2.25rem, 4.6vw, 5.25rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.dtp-hero-copy > p:not(:first-child) {
  max-width: 820px;
  margin: 24px 0 0;
  color: #496463;
  font-size: clamp(1rem, 1.4vw, 1.16rem);
  line-height: 1.85;
}

.dtp-hero-actions,
.dtp-locale-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dtp-hero-actions {
  margin-top: 28px;
}

.dtp-hero-actions a,
.dtp-locale-switch button,
.dtp-pager button,
.dtp-pager a {
  min-height: 42px;
  border: 1px solid rgba(13, 106, 99, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #115e59;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 780;
  text-decoration: none;
  cursor: pointer;
}

.dtp-hero-actions a {
  display: inline-flex;
  align-items: center;
  padding: 0 19px;
}

.dtp-hero .dtp-hero-actions > a.button.primary,
.dtp-hero .dtp-hero-actions > a.button.primary:link,
.dtp-hero .dtp-hero-actions > a.button.primary:visited {
  border-color: #0d6a63;
  background: #0d6a63;
  color: #fff;
}

.dtp-hero .dtp-hero-actions > a.button.primary:hover,
.dtp-hero .dtp-hero-actions > a.button.primary:focus-visible {
  border-color: #084f4a;
  background: #084f4a;
  color: #fff;
}

.dtp-hero-side {
  display: grid;
  align-content: start;
  gap: 14px;
}

.dtp-locale-switch {
  justify-content: flex-end;
}

.dtp-locale-switch button {
  padding: 0 16px;
}

.dtp-locale-switch button.is-active {
  border-color: #0d6a63;
  background: #0d6a63;
  color: #fff;
}

.dtp-hero-facts {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.dtp-hero-facts article {
  padding: 16px 18px;
  border: 1px solid rgba(13, 106, 99, 0.16);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.64);
}

.dtp-hero-facts strong,
.dtp-hero-facts span {
  display: block;
}

.dtp-hero-facts strong {
  color: #173f3e;
  font-size: 1rem;
}

.dtp-hero-facts span {
  margin-top: 5px;
  color: #617774;
  font-size: 0.86rem;
  line-height: 1.55;
}

.dtp-course-section {
  margin-top: 26px;
  padding: clamp(18px, 3vw, 34px);
  border: 1px solid rgba(13, 106, 99, 0.16);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 55px rgba(32, 75, 72, 0.08);
}

.dtp-course-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 14px 30px;
  margin-bottom: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(13, 106, 99, 0.14);
}

.dtp-course-intro > p:first-child {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.dtp-course-intro h2 {
  margin: 0;
  color: #123534;
  font-size: clamp(1.65rem, 2.6vw, 2.65rem);
  letter-spacing: -0.035em;
}

.dtp-course-intro > p:last-child {
  margin: 0;
  color: #5d7471;
  line-height: 1.75;
}

.dtp-course {
  --dtp-ink: #133636;
  --dtp-muted: #627774;
  --dtp-accent: #0c6d66;
  --dtp-rust: #a9572d;
  --dtp-line: rgba(13, 106, 99, 0.17);
  color: var(--dtp-ink);
}

.dtp-course *,
.dtp-course *::before,
.dtp-course *::after {
  box-sizing: border-box;
}

.dtp-course {
  display: grid;
  grid-template-columns: minmax(230px, 0.27fr) minmax(0, 0.73fr);
  gap: 22px;
}

.dtp-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--dtp-line);
  border-radius: 18px;
  background: #f3f8f5;
}

.dtp-sidebar-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 6px 13px;
  border-bottom: 1px solid var(--dtp-line);
}

.dtp-sidebar-heading span {
  color: var(--dtp-accent);
  font-size: 0.72rem;
  font-weight: 840;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.dtp-sidebar-heading strong {
  flex: 0 0 auto;
  color: var(--dtp-muted);
  font-size: 0.72rem;
}

.dtp-chapter-nav {
  display: grid;
  gap: 7px;
  margin-top: 10px;
}

.dtp-chapter-nav button {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  width: 100%;
  padding: 11px;
  border: 1px solid transparent;
  border-radius: 13px;
  background: transparent;
  color: var(--dtp-ink);
  text-align: left;
  cursor: pointer;
}

.dtp-chapter-nav button:hover,
.dtp-chapter-nav button:focus-visible {
  border-color: var(--dtp-line);
  background: rgba(255, 255, 255, 0.82);
}

.dtp-chapter-nav button.is-active {
  border-color: rgba(13, 106, 99, 0.28);
  background: #fff;
  box-shadow: 0 8px 24px rgba(21, 83, 77, 0.09);
}

.dtp-chapter-nav button > b {
  color: var(--dtp-rust);
  font-size: 0.78rem;
}

.dtp-chapter-nav button span,
.dtp-chapter-nav button strong,
.dtp-chapter-nav button small {
  display: block;
  min-width: 0;
}

.dtp-chapter-nav button strong {
  font-size: 0.9rem;
  line-height: 1.25;
}

.dtp-chapter-nav button small {
  margin-top: 4px;
  overflow: hidden;
  color: var(--dtp-muted);
  font-size: 0.72rem;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dtp-stage {
  min-width: 0;
  scroll-margin-top: 98px;
}

.dtp-stage-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--dtp-muted);
  font-size: 0.78rem;
}

.dtp-chapter {
  overflow: hidden;
  min-height: 620px;
  border: 1px solid var(--dtp-line);
  border-radius: 20px;
  background: #fff;
}

.dtp-chapter-head {
  padding: clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--dtp-line);
  background:
    linear-gradient(90deg, rgba(13, 106, 99, 0.09), transparent 62%),
    #fbfdfc;
}

.dtp-chapter-head p {
  margin: 0 0 9px;
  color: var(--dtp-accent);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dtp-chapter-head h3 {
  max-width: 950px;
  margin: 0;
  color: var(--dtp-ink);
  font-size: clamp(1.5rem, 2.35vw, 2.45rem);
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.dtp-chapter-body {
  padding: clamp(20px, 3vw, 38px);
}

.dtp-chapter-body p,
.dtp-chapter-body li {
  line-height: 1.72;
}

.dtp-lead {
  margin: 0 0 24px;
  color: #3d5d5a;
  font-size: 1.04rem;
}

.dtp-evidence-ladder {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.dtp-evidence-ladder article {
  position: relative;
  min-height: 152px;
  padding: 16px 13px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: linear-gradient(160deg, #f5faf7, #fff);
}

.dtp-evidence-ladder article:not(:last-child)::after {
  content: "›";
  position: absolute;
  z-index: 2;
  top: 50%;
  right: -8px;
  width: 16px;
  height: 22px;
  margin-top: -11px;
  color: var(--dtp-rust);
  background: #fff;
  font-size: 1.25rem;
  line-height: 20px;
  text-align: center;
}

.dtp-evidence-ladder b,
.dtp-evidence-ladder strong,
.dtp-evidence-ladder span {
  display: block;
}

.dtp-evidence-ladder b {
  color: var(--dtp-rust);
  font-size: 0.72rem;
}

.dtp-evidence-ladder strong {
  margin-top: 18px;
  font-size: 0.92rem;
}

.dtp-evidence-ladder span {
  margin-top: 7px;
  color: var(--dtp-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.dtp-callout {
  margin-top: 22px;
  padding: 17px 19px;
  border: 1px solid rgba(13, 106, 99, 0.23);
  border-left: 4px solid var(--dtp-accent);
  border-radius: 12px;
  background: rgba(13, 106, 99, 0.06);
}

.dtp-callout--caution {
  border-color: rgba(169, 87, 45, 0.25);
  border-left-color: var(--dtp-rust);
  background: rgba(169, 87, 45, 0.055);
}

.dtp-callout strong,
.dtp-callout p {
  display: block;
  margin: 0;
}

.dtp-callout p {
  margin-top: 5px;
  color: #4f6663;
}

.dtp-callout a,
.dtp-chapter-body a {
  color: #076d66;
  text-underline-offset: 3px;
}

.dtp-definition-grid,
.dtp-method-grid,
.dtp-question-grid,
.dtp-validation-matrix,
.dtp-progress-grid,
.dtp-method-bridge {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.dtp-definition-grid,
.dtp-method-bridge {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.dtp-method-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0;
}

.dtp-question-grid,
.dtp-validation-matrix,
.dtp-progress-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.dtp-definition-grid article,
.dtp-method-grid article,
.dtp-question-grid article,
.dtp-validation-matrix article,
.dtp-progress-grid article,
.dtp-method-bridge article {
  padding: 18px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: #fbfdfc;
}

.dtp-definition-grid span,
.dtp-method-grid span,
.dtp-validation-matrix span,
.dtp-progress-grid span {
  display: block;
  color: var(--dtp-rust);
  font-size: 0.71rem;
  font-weight: 830;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dtp-definition-grid strong,
.dtp-method-grid strong,
.dtp-question-grid strong,
.dtp-validation-matrix strong,
.dtp-progress-grid strong,
.dtp-method-bridge strong {
  display: block;
  margin-top: 7px;
  font-size: 1rem;
}

.dtp-definition-grid p,
.dtp-method-grid p,
.dtp-question-grid p,
.dtp-validation-matrix p,
.dtp-progress-grid p,
.dtp-method-bridge p {
  margin: 7px 0 0;
  color: var(--dtp-muted);
  font-size: 0.86rem;
}

.dtp-method-grid small {
  display: block;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--dtp-line);
  color: var(--dtp-accent);
  font-size: 0.76rem;
  line-height: 1.5;
}

.dtp-method-atlas {
  display: grid;
  grid-template-columns: minmax(210px, 0.24fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.dtp-method-selector {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 7px;
  padding: 12px;
  border: 1px solid var(--dtp-line);
  border-radius: 16px;
  background: linear-gradient(160deg, #f7fbf9, #eef7f3);
  box-shadow: 0 16px 38px rgba(25, 69, 67, 0.08);
}

.dtp-method-selector > p {
  margin: 2px 5px 8px;
  color: #4d6865;
  font-size: 0.74rem;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dtp-method-selector button {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  width: 100%;
  min-height: 62px;
  padding: 10px 11px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.74);
  color: #244846;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.dtp-method-selector button:hover,
.dtp-method-selector button:focus-visible {
  border-color: rgba(13, 106, 99, 0.42);
  background: #fff;
  transform: translateX(2px);
  outline: none;
}

.dtp-method-selector button.is-active,
.dtp-method-selector button.is-active:hover,
.dtp-method-selector button.is-active:focus-visible {
  border-color: #0d6a63;
  background: #0d6a63;
  color: #fff;
}

.dtp-method-selector button b {
  color: #a9572d;
  font-size: 0.72rem;
}

.dtp-method-selector button.is-active b {
  color: #ffe5d3;
}

.dtp-method-selector button span,
.dtp-method-selector button strong,
.dtp-method-selector button small {
  display: block;
  min-width: 0;
}

.dtp-method-selector button strong {
  color: inherit;
  font-size: 0.82rem;
  line-height: 1.38;
}

.dtp-method-selector button small {
  margin-top: 3px;
  overflow: hidden;
  color: #718986;
  font-size: 0.68rem;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dtp-method-selector button.is-active small {
  color: rgba(255, 255, 255, 0.82);
}

.dtp-method-dossier {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--dtp-line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(26, 66, 64, 0.08);
}

.dtp-method-dossier:focus {
  outline: none;
}

.dtp-method-dossier-head {
  padding: clamp(22px, 3vw, 34px);
  border-bottom: 1px solid var(--dtp-line);
  background:
    radial-gradient(circle at 92% 14%, rgba(169, 87, 45, 0.14), transparent 24%),
    linear-gradient(135deg, #eef7f3, #fbfdfc 70%);
}

.dtp-method-dossier-head > span,
.dtp-method-section-head > span {
  display: block;
  color: #a9572d;
  font-size: 0.72rem;
  font-weight: 860;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.dtp-method-dossier-head h4 {
  max-width: 860px;
  margin: 9px 0 0;
  color: #173b3a;
  font-size: clamp(1.35rem, 2.1vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.dtp-method-dossier-head p {
  max-width: 940px;
  margin: 13px 0 0;
  color: #526b68;
  font-size: 0.94rem;
  line-height: 1.8;
}

.dtp-method-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 20px clamp(18px, 3vw, 30px) 0;
}

.dtp-method-facts article {
  display: grid;
  grid-template-columns: minmax(92px, 0.3fr) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 15px;
  border: 1px solid rgba(13, 106, 99, 0.14);
  border-radius: 12px;
  background: #f8fbfa;
}

.dtp-method-facts span {
  color: #0d6a63;
  font-size: 0.73rem;
  font-weight: 820;
}

.dtp-method-facts strong {
  color: #385653;
  font-size: 0.82rem;
  line-height: 1.55;
}

.dtp-method-literature,
.dtp-method-block,
.dtp-method-evidence {
  margin: 22px clamp(18px, 3vw, 30px) 0;
}

.dtp-method-literature {
  overflow: hidden;
  border: 1px solid rgba(13, 106, 99, 0.2);
  border-radius: 16px;
  background: #f8fbfa;
}

.dtp-method-section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
}

.dtp-method-literature > .dtp-method-section-head {
  padding: 17px 18px;
  border-bottom: 1px solid rgba(13, 106, 99, 0.15);
  background: #edf6f2;
}

.dtp-method-section-head > strong {
  color: #294d4a;
  font-size: 0.9rem;
  line-height: 1.5;
}

.dtp-method-literature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
  gap: 18px;
  align-items: stretch;
  padding: 18px;
}

.dtp-method-literature-grid > button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 340px;
  overflow: hidden;
  padding: 12px;
  border: 1px solid #d4e3df;
  border-radius: 13px;
  background: #fff;
  cursor: zoom-in;
}

.dtp-method-literature-grid > button:hover,
.dtp-method-literature-grid > button:focus-visible {
  border-color: #0d6a63;
  outline: 3px solid rgba(13, 106, 99, 0.16);
  outline-offset: 2px;
}

.dtp-method-literature-grid > button img {
  display: block;
  width: 100%;
  max-height: 610px;
  object-fit: contain;
}

.dtp-method-literature-grid > button span {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(13, 78, 73, 0.94);
  color: #fff;
  font-size: 0.74rem;
  font-weight: 800;
  box-shadow: 0 5px 16px rgba(10, 52, 49, 0.2);
}

.dtp-method-literature-grid ol {
  display: grid;
  align-content: center;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: method-figure;
}

.dtp-method-literature-grid li {
  position: relative;
  padding: 14px 14px 14px 46px;
  border: 1px solid #dce9e5;
  border-radius: 12px;
  background: #fff;
  counter-increment: method-figure;
}

.dtp-method-literature-grid li::before {
  content: counter(method-figure, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 14px;
  color: #a9572d;
  font-size: 0.7rem;
  font-weight: 880;
}

.dtp-method-literature-grid li b,
.dtp-method-literature-grid li p {
  display: block;
  margin: 0;
}

.dtp-method-literature-grid li b {
  color: #234a47;
  font-size: 0.82rem;
}

.dtp-method-literature-grid li p {
  margin-top: 5px;
  color: #5b716e;
  font-size: 0.78rem;
  line-height: 1.62;
}

.dtp-method-literature figcaption {
  padding: 13px 18px 16px;
  border-top: 1px solid #dce9e5;
  color: #607673;
  font-size: 0.74rem;
  line-height: 1.65;
}

.dtp-method-variants {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
  margin-top: 11px;
}

.dtp-method-variants article {
  padding: 16px;
  border: 1px solid var(--dtp-line);
  border-radius: 13px;
  background: #fbfdfc;
}

.dtp-method-variants strong,
.dtp-method-variants p {
  display: block;
  margin: 0;
}

.dtp-method-variants strong {
  color: #234a47;
  font-size: 0.86rem;
}

.dtp-method-variants p {
  margin-top: 7px;
  color: #5a706d;
  font-size: 0.8rem;
  line-height: 1.65;
}

.dtp-method-workflow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 11px 0 0;
  padding: 0;
  list-style: none;
}

.dtp-method-workflow li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding: 15px;
  border: 1px solid rgba(13, 106, 99, 0.17);
  border-radius: 13px;
  background: linear-gradient(145deg, #f2f8f5, #fff);
}

.dtp-method-workflow li > b {
  color: #a9572d;
  font-size: 0.72rem;
}

.dtp-method-workflow strong,
.dtp-method-workflow p {
  display: block;
  margin: 0;
}

.dtp-method-workflow strong {
  color: #244b48;
  font-size: 0.84rem;
}

.dtp-method-workflow p {
  margin-top: 6px;
  color: #5a716e;
  font-size: 0.79rem;
  line-height: 1.62;
}

.dtp-method-evidence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.dtp-method-evidence section {
  padding: 17px 18px;
  border: 1px solid rgba(13, 106, 99, 0.2);
  border-radius: 14px;
  background: rgba(13, 106, 99, 0.045);
}

.dtp-method-evidence section:last-child {
  border-color: rgba(169, 87, 45, 0.24);
  background: rgba(169, 87, 45, 0.045);
}

.dtp-method-evidence ul {
  margin: 12px 0 0;
  padding-left: 19px;
  color: #4e6764;
  font-size: 0.81rem;
  line-height: 1.68;
}

.dtp-method-evidence li + li {
  margin-top: 6px;
}

.dtp-question-grid b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 24px;
  border-radius: 999px;
  background: rgba(169, 87, 45, 0.1);
  color: var(--dtp-rust);
  font-size: 0.72rem;
}

.dtp-progress-grid article {
  position: relative;
  padding-bottom: 52px;
}

.dtp-progress-grid article > a,
.dtp-progress-grid article > span:last-child {
  position: absolute;
  right: 18px;
  bottom: 17px;
  left: 18px;
  color: var(--dtp-accent);
  font-size: 0.76rem;
  font-weight: 720;
}

.dtp-progress-grid article > span:last-child {
  letter-spacing: 0;
  text-transform: none;
}

.dtp-timeline {
  position: relative;
  display: grid;
  gap: 13px;
}

.dtp-timeline::before {
  content: "";
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 62px;
  width: 1px;
  background: linear-gradient(var(--dtp-accent), rgba(13, 106, 99, 0.08));
}

.dtp-timeline article {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
}

.dtp-timeline time {
  position: relative;
  z-index: 1;
  align-self: start;
  padding: 7px 4px;
  border: 1px solid rgba(13, 106, 99, 0.26);
  border-radius: 999px;
  background: #fff;
  color: var(--dtp-accent);
  font-size: 0.72rem;
  font-weight: 820;
  text-align: center;
}

.dtp-timeline article > div {
  padding: 15px 17px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: #fbfdfc;
}

.dtp-timeline strong {
  display: block;
}

.dtp-timeline p {
  margin: 6px 0 9px;
  color: var(--dtp-muted);
  font-size: 0.86rem;
}

.dtp-timeline a {
  font-size: 0.78rem;
  font-weight: 720;
}

.dtp-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--dtp-line);
  border-radius: 15px;
}

.dtp-table {
  width: 100%;
  min-width: 960px;
  border-collapse: collapse;
  background: #fff;
}

.dtp-table th,
.dtp-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--dtp-line);
  color: #49625f;
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: left;
  vertical-align: top;
}

.dtp-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #edf5f1;
  color: var(--dtp-ink);
  font-weight: 820;
}

.dtp-table td:first-child {
  color: var(--dtp-ink);
  font-weight: 760;
}

.dtp-design-flow {
  display: grid;
  gap: 10px;
}

.dtp-design-flow article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 17px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: #fbfdfc;
}

.dtp-design-flow b {
  color: var(--dtp-rust);
  font-size: 0.76rem;
}

.dtp-design-flow strong {
  display: block;
}

.dtp-design-flow p {
  margin: 5px 0 0;
  color: var(--dtp-muted);
  font-size: 0.86rem;
}

.dtp-lipms-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr) 24px);
  align-items: stretch;
  gap: 6px;
}

.dtp-lipms-flow article {
  padding: 17px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: linear-gradient(150deg, #eff7f3, #fff);
}

.dtp-lipms-flow article:nth-of-type(4) {
  grid-column: 7 / 8;
}

.dtp-lipms-flow i {
  align-self: center;
  color: var(--dtp-rust);
  font-style: normal;
  font-size: 1.2rem;
  text-align: center;
}

.dtp-lipms-flow i:nth-of-type(3) {
  grid-column: 6 / 7;
}

.dtp-lipms-flow span,
.dtp-lipms-flow strong {
  display: block;
}

.dtp-lipms-flow span {
  color: var(--dtp-accent);
  font-size: 0.72rem;
  font-weight: 820;
}

.dtp-lipms-flow strong {
  margin-top: 15px;
  font-size: 0.9rem;
  line-height: 1.48;
}

.dtp-two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.dtp-two-column section {
  padding: 18px;
  border: 1px solid var(--dtp-line);
  border-radius: 14px;
  background: #fbfdfc;
}

.dtp-two-column section:last-child {
  border-color: rgba(169, 87, 45, 0.22);
  background: rgba(169, 87, 45, 0.035);
}

.dtp-section-label {
  display: block;
  color: var(--dtp-accent);
  font-size: 0.76rem;
  font-weight: 840;
}

.dtp-two-column ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--dtp-muted);
  font-size: 0.86rem;
}

.dtp-reference-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dtp-paper-figure {
  overflow: hidden;
  margin: 24px 0 0;
  border: 1px solid rgba(13, 106, 99, 0.2);
  border-radius: 16px;
  background: #f8fbf9;
}

.dtp-paper-figure-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--dtp-line);
  background: linear-gradient(90deg, rgba(13, 106, 99, 0.1), rgba(169, 87, 45, 0.055));
}

.dtp-paper-figure-head span {
  flex: 0 0 auto;
  color: var(--dtp-rust);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.dtp-paper-figure-head strong {
  color: var(--dtp-ink);
  font-size: 0.92rem;
  text-align: right;
}

.dtp-paper-figure-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 16px;
  padding: 16px;
}

.dtp-paper-figure-grid > button {
  position: relative;
  overflow: hidden;
  align-self: start;
  padding: 0;
  border: 1px solid var(--dtp-line);
  border-radius: 12px;
  background: #fff;
  cursor: zoom-in;
}

.dtp-paper-figure-grid > button img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: contain;
  background: #fff;
}

.dtp-paper-figure-grid > button span {
  position: absolute;
  right: 9px;
  bottom: 9px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(14, 55, 53, 0.88);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 760;
}

.dtp-paper-figure-grid ol {
  display: grid;
  align-content: start;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: figure-step;
}

.dtp-paper-figure-grid li {
  position: relative;
  padding: 13px 13px 13px 44px;
  border: 1px solid var(--dtp-line);
  border-radius: 11px;
  background: #fff;
  counter-increment: figure-step;
}

.dtp-paper-figure-grid li::before {
  content: counter(figure-step, decimal-leading-zero);
  position: absolute;
  top: 13px;
  left: 13px;
  color: var(--dtp-rust);
  font-size: 0.72rem;
  font-weight: 850;
}

.dtp-paper-figure-grid li b {
  display: block;
  color: var(--dtp-ink);
  font-size: 0.84rem;
}

.dtp-paper-figure-grid li p {
  margin: 5px 0 0;
  color: var(--dtp-muted);
  font-size: 0.78rem;
  line-height: 1.58;
}

.dtp-paper-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--dtp-line);
  color: var(--dtp-muted);
  font-size: 0.74rem;
  line-height: 1.55;
}

.dtp-figure-dialog {
  width: min(1500px, calc(100vw - 28px));
  max-width: none;
  max-height: calc(100vh - 28px);
  margin: auto;
  padding: 12px;
  border: 1px solid rgba(13, 106, 99, 0.25);
  border-radius: 18px;
  background: #f8fbf9;
  box-shadow: 0 34px 100px rgba(10, 45, 43, 0.3);
}

.dtp-figure-dialog::backdrop {
  background: rgba(18, 38, 36, 0.72);
  backdrop-filter: blur(4px);
}

.dtp-figure-dialog button {
  position: sticky;
  z-index: 2;
  top: 0;
  float: right;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: #0d6a63;
  color: #fff;
  font: inherit;
  font-size: 1.25rem;
  cursor: pointer;
}

.dtp-figure-dialog img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 105px);
  margin: 0 auto;
  object-fit: contain;
  background: #fff;
}

.dtp-figure-dialog p {
  margin: 9px 48px 0 8px;
  color: #405d5a;
  font-size: 0.82rem;
}

.dtp-reference-list li {
  display: grid;
  grid-template-columns: minmax(130px, 0.22fr) minmax(0, 0.62fr) minmax(90px, 0.16fr);
  gap: 12px;
  align-items: start;
  padding: 14px 15px;
  border: 1px solid var(--dtp-line);
  border-radius: 12px;
  background: #fbfdfc;
}

.dtp-reference-list span {
  color: var(--dtp-rust);
  font-size: 0.76rem;
  font-weight: 800;
}

.dtp-reference-list strong {
  font-size: 0.82rem;
  line-height: 1.5;
}

.dtp-reference-list a {
  justify-self: end;
  font-size: 0.76rem;
  font-weight: 750;
  white-space: nowrap;
}

.dtp-pager {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) auto minmax(120px, 1fr);
  gap: 12px;
  align-items: center;
  margin-top: 13px;
}

.dtp-pager button,
.dtp-pager a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 17px;
}

.dtp-pager button:first-child {
  justify-self: start;
}

.dtp-pager button:last-child {
  justify-self: end;
  border-color: var(--dtp-accent);
  background: var(--dtp-accent);
  color: #fff;
}

.dtp-pager button:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

.dtp-pager span,
.dtp-pager a {
  color: var(--dtp-muted);
  font-size: 0.78rem;
}

.dtp-crosslinks {
  display: grid;
  grid-template-columns: minmax(0, 1fr) repeat(3, minmax(160px, 0.32fr));
  gap: 12px;
  margin-top: 22px;
}

.dtp-crosslinks > div,
.dtp-crosslinks > a {
  padding: 18px;
  border: 1px solid rgba(13, 106, 99, 0.17);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.84);
  color: #173f3e;
  text-decoration: none;
}

.dtp-crosslinks strong,
.dtp-crosslinks span {
  display: block;
}

.dtp-crosslinks span {
  margin-top: 6px;
  color: #627774;
  font-size: 0.84rem;
  line-height: 1.55;
}

.dtp-embedded-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin: 26px 0 14px;
  padding: 18px 20px;
  border: 1px solid rgba(13, 106, 99, 0.2);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(13, 106, 99, 0.08), rgba(169, 87, 45, 0.045));
}

.dtp-embedded-intro p,
.dtp-embedded-intro h3 {
  margin: 0;
}

.dtp-embedded-intro p {
  color: #0c6d66;
  font-size: 0.76rem;
  font-weight: 820;
}

.dtp-embedded-intro h3 {
  margin-top: 5px;
  color: #173f3e;
  font-size: 1.12rem;
}

.dtp-embedded-intro a {
  flex: 0 0 auto;
  color: #0c6d66;
  font-size: 0.82rem;
  font-weight: 760;
}

.dtp-course--embedded {
  grid-template-columns: minmax(210px, 0.25fr) minmax(0, 0.75fr);
  margin-bottom: 30px;
}

.dtp-course--embedded .dtp-sidebar {
  top: 112px;
}

.dtp-course--embedded .dtp-chapter {
  min-height: 540px;
}

@media (max-width: 1100px) {
  .dtp-hero {
    grid-template-columns: 1fr;
  }

  .dtp-hero-side {
    grid-template-columns: minmax(200px, 0.35fr) minmax(0, 0.65fr);
  }

  .dtp-locale-switch {
    justify-content: flex-start;
  }

  .dtp-course,
  .dtp-course--embedded {
    grid-template-columns: 1fr;
  }

  .dtp-sidebar,
  .dtp-course--embedded .dtp-sidebar {
    position: static;
    max-height: none;
    overflow: hidden;
  }

  .dtp-chapter-nav {
    display: flex;
    overflow-x: auto;
    padding-bottom: 6px;
    scroll-snap-type: x mandatory;
  }

  .dtp-chapter-nav button {
    flex: 0 0 220px;
    scroll-snap-align: start;
  }

  .dtp-evidence-ladder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .dtp-evidence-ladder article:not(:last-child)::after {
    display: none;
  }

  .dtp-crosslinks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .dtp-method-atlas {
    grid-template-columns: 1fr;
  }

  .dtp-method-selector {
    position: static;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }

  .dtp-method-selector > p {
    display: none;
  }

  .dtp-method-selector button {
    flex: 0 0 220px;
    scroll-snap-align: start;
  }

  .dtp-method-selector button:hover,
  .dtp-method-selector button:focus-visible {
    transform: translateY(-1px);
  }

  .dtp-method-literature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .dtp-page-shell {
    width: min(100% - 18px, 1500px);
    padding-top: 12px;
  }

  .dtp-hero {
    padding: 24px 20px;
    border-radius: 20px;
  }

  .dtp-hero h1 {
    font-size: clamp(2.2rem, 12vw, 3.8rem);
  }

  .dtp-hero-side,
  .dtp-course-intro,
  .dtp-definition-grid,
  .dtp-method-grid,
  .dtp-question-grid,
  .dtp-validation-matrix,
  .dtp-progress-grid,
  .dtp-method-bridge,
  .dtp-two-column,
  .dtp-crosslinks {
    grid-template-columns: 1fr;
  }

  .dtp-paper-figure-grid {
    grid-template-columns: 1fr;
  }

  .dtp-method-facts,
  .dtp-method-workflow,
  .dtp-method-evidence {
    grid-template-columns: 1fr;
  }

  .dtp-method-facts article {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .dtp-method-literature-grid > button {
    min-height: 240px;
  }

  .dtp-course-intro > p:first-child {
    grid-column: auto;
  }

  .dtp-course-section {
    padding: 12px;
    border-radius: 18px;
  }

  .dtp-stage-meta span:last-child {
    display: none;
  }

  .dtp-chapter {
    min-height: 0;
    border-radius: 16px;
  }

  .dtp-evidence-ladder {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dtp-lipms-flow {
    grid-template-columns: 1fr;
  }

  .dtp-lipms-flow article,
  .dtp-lipms-flow article:nth-of-type(4),
  .dtp-lipms-flow i,
  .dtp-lipms-flow i:nth-of-type(3) {
    grid-column: auto;
  }

  .dtp-lipms-flow i {
    transform: rotate(90deg);
  }

  .dtp-reference-list li {
    grid-template-columns: 1fr;
  }

  .dtp-reference-list a {
    justify-self: start;
  }

  .dtp-pager {
    grid-template-columns: 1fr 1fr;
  }

  .dtp-pager span,
  .dtp-pager a {
    grid-column: 1 / -1;
    grid-row: 1;
    justify-self: center;
    text-align: center;
  }

  .dtp-pager button:first-child,
  .dtp-pager button:last-child {
    width: 100%;
    grid-row: 2;
  }

  .dtp-embedded-intro {
    display: grid;
    align-items: start;
  }

  .dtp-paper-figure-head {
    display: grid;
  }

  .dtp-paper-figure-head strong {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .dtp-evidence-ladder {
    grid-template-columns: 1fr;
  }

  .dtp-chapter-head,
  .dtp-chapter-body {
    padding: 19px 16px;
  }

  .dtp-timeline::before {
    left: 26px;
  }

  .dtp-timeline article {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dtp-course *,
  .dtp-course *::before,
  .dtp-course *::after {
    scroll-behavior: auto !important;
  }
}