/* 1. Global navigation shared by the center and every module. */
:root {
  --portal-stack: 126px;
}
html {
  scroll-padding-top: calc(var(--portal-stack) + 24px);
}
.portal-chrome {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #f9fafcf5;
  backdrop-filter: blur(18px);
}
.portal-topbar {
  height: 72px;
  padding: 12px max(32px, calc((100vw - 1344px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}
.portal-main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.portal-main-nav a {
  padding: 8px 17px;
  font-size: 13px;
  color: #78859a;
  border-radius: 8px;
}
.portal-main-nav a[aria-current] {
  background: #edf2fd;
  color: var(--blue);
  font-weight: 600;
}
.portal-prototype-link {
  color: #687ca5;
  font-size: 12px;
}
.portal-module-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  height: 54px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}
.portal-module-nav a {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 8px;
  padding: 0 16px;
  color: #68788e;
  font-size: 13px;
  border-bottom: 2px solid transparent;
}
.portal-module-nav a[aria-current] {
  color: var(--blue);
  background: linear-gradient(0deg, #e9effd, transparent);
  border-bottom-color: var(--blue);
  font-weight: 650;
}
.portal-module-nav small {
  font-size: 9px;
  color: #9aa4b4;
  font-weight: 400;
}
.module-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #b9c3d2;
}
.module-dot.draft {
  background: #6685da;
}
.portal-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 48px 72px;
}
.portal-eyebrow {
  display: block;
  font-size: 10px;
  letter-spacing: 1.5px;
  color: #8190a8;
  margin-bottom: 12px;
}
.portal-main h1 {
  margin-bottom: 16px;
  font-size: 42px;
  line-height: 1.25;
  letter-spacing: -1px;
}
.portal-main h2 {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 0;
  letter-spacing: -0.5px;
}
.portal-main h3 {
  font-size: 18px;
  line-height: 1.5;
}
.portal-main p {
  color: #718097;
  font-size: 14px;
  line-height: 1.9;
}
.portal-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding: 28px 24px;
  border-top: 1px solid var(--line);
  color: #92a0b3;
  font-size: 11px;
}
.portal-footer a {
  color: #7183a2;
}
.plan-state {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  line-height: 1.4;
  padding: 5px 8px;
  border-radius: 5px;
  white-space: nowrap;
  font-weight: 500;
}
.plan-state.draft {
  background: #edf2fe;
  color: #5b77bc;
}
.plan-state.planned {
  background: #f0f2f5;
  color: #909bad;
}
.plan-state.archived {
  background: #f5f0e7;
  color: #a08b65;
}
.panel-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
}
.panel-heading .portal-eyebrow {
  margin-bottom: 8px;
}
.quiet-label {
  font-size: 11px;
  color: #96a2b5;
  white-space: nowrap;
}

/* 2. Center overview: the same reading style, with space for all five modules. */
.hub-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 28px;
}
.hub-intro p {
  max-width: 690px;
  margin-bottom: 0;
}
.hub-history-link {
  flex: 0 0 auto;
  padding: 11px 16px;
  border: 1px solid #dce3ef;
  background: #fff;
  color: #64789f;
  border-radius: 9px;
  font-size: 12px;
}
.hub-summary {
  display: flex;
  align-items: center;
  gap: 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
  margin-bottom: 38px;
}
.hub-summary div {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.hub-summary strong {
  font-size: 25px;
  font-weight: 550;
  color: #526580;
}
.hub-summary span {
  font-size: 12px;
  color: #8895a9;
}
.hub-summary p {
  margin: 0 0 0 auto;
  font-size: 11px;
}
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.plan-card {
  border: 1px solid #e1e7f0;
  border-radius: 15px;
  background: #fff;
  padding: 25px;
  min-width: 0;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}
.plan-card:hover {
  border-color: #bdcdeb;
  box-shadow: 0 7px 22px #294d8d06;
}
.plan-card.featured {
  grid-column: span 2;
  display: flex;
  align-items: center;
  gap: 28px;
  padding-right: 30px;
  background: linear-gradient(120deg, #fff 45%, #edf2fc);
}
.plan-card-copy {
  flex: 1;
  min-width: 0;
}
.plan-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.module-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: #28364e;
}
.module-icon img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}
.plan-card h3 {
  font-size: 22px;
  margin-bottom: 8px;
}
.plan-card p {
  font-size: 13px;
  min-height: 48px;
  margin-bottom: 18px;
}
.plan-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 10px;
  color: #98a4b6;
  margin-bottom: 18px;
}
.plan-card-meta span {
  font-family: ui-monospace, monospace;
}
.plan-card-action {
  display: inline-flex;
  align-items: center;
  gap: 35px;
  color: #647ba4;
  font-size: 12px;
}
.featured .plan-card-action {
  background: #3e60c6;
  color: white;
  padding: 11px 16px;
  border-radius: 8px;
}
.secondary-card-link {
  margin-left: 18px;
  color: #7184a8;
  font-size: 11px;
}
.hub-phone-preview {
  width: 135px;
  height: 226px;
  object-fit: cover;
  border: 4px solid #293345;
  border-radius: 20px;
  box-shadow: 0 12px 22px #1928421c;
}
.hub-updates {
  margin-top: 46px;
}
.update-feature {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  align-items: center;
  gap: 30px;
  padding: 28px;
  background: #fff;
  border: 1px solid #e1e7f0;
  border-radius: 14px;
}
.revision-mark {
  color: #667fb9;
  font-size: 33px;
  letter-spacing: -2px;
  font-weight: 550;
}
.revision-mark span {
  display: block;
  margin-top: 3px;
  font-size: 10px;
  color: #8f9db5;
  letter-spacing: 0;
}
.update-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.update-heading h3 {
  margin: 0;
}
.update-feature p {
  font-size: 13px;
  margin: 12px 0;
}
.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  color: #587ab4;
  font-size: 11px;
}
.hub-guide {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 42px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hub-guide article > span {
  color: #929fb3;
  font-size: 10px;
}
.hub-guide h3 {
  font-size: 15px;
  margin: 10px 0 8px;
}
.hub-guide p {
  font-size: 12px;
  margin: 0;
}

/* 3. A module retains the established chapter navigation and reading area. */
.document-context {
  max-width: 1440px;
  margin: 0 auto;
  padding: 26px 48px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}
.breadcrumbs a,
.breadcrumbs > span {
  color: #91a0b5;
}
.breadcrumbs strong {
  color: #536681;
}
.context-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 9px;
  color: #8d9bb0;
  font-size: 11px;
}
.context-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.context-controls .audience-switch a {
  padding: 7px 18px;
  font-size: 12px;
}
.audience-unavailable {
  align-self: center;
  padding: 7px 12px;
  color: #a4adbc;
  font-size: 11px;
}
.version-picker {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  color: #8a98af;
}
.version-picker select,
.release-controls select,
.version-filter select {
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='m4 6 4 4 4-4' stroke='%23667898' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px 16px;
  min-height: 40px;
  cursor: pointer;
  transition: border-color 150ms ease;
}
.version-picker select:hover,
.version-filter select:hover,
.release-controls select:hover {
  border-color: #acbdd9;
}
.version-picker select:focus-visible,
.version-filter select:focus-visible,
.release-controls select:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.version-picker select,
.version-filter select {
  font: inherit;
  color: #60728e;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background-color: #fff;
  padding: 9px 44px 9px 12px;
  max-width: 100%;
}
.version-picker select {
  font-size: 11px;
}
.context-history {
  font-size: 11px;
  color: #7488ac;
  white-space: nowrap;
}
.context-latest {
  padding: 8px 12px;
  border: 1px solid #dce5fc;
  border-radius: 8px;
  background: #edf2ff;
  color: #395edb;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.context-latest:hover {
  background: #e1eaff;
}
.context-latest:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.portal-shell .document-layout {
  padding-top: 24px;
  padding-bottom: 10px;
}
.portal-shell .reading-sidebar {
  top: calc(var(--portal-stack) + 24px);
  max-height: calc(100dvh - var(--portal-stack) - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
}
.portal-shell .document-layout .hero-section {
  gap: 32px;
}
.portal-shell .document-layout .section:last-of-type {
  margin-bottom: 45px;
}

/* 4. Reserved modules make missing business content explicit. */
.pending-main {
  padding-top: 22px;
}
.pending-hero {
  max-width: 760px;
  margin-bottom: 32px;
}
.pending-hero > p {
  margin: 18px 0 0;
}
.reserved-panel {
  padding: 30px;
  border: 1px solid #e0e6ef;
  background: #fff;
  border-radius: 14px;
}
.reserved-panel h2 {
  font-size: 22px;
}
.reserved-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.reserved-grid article {
  background: #f8f9fc;
  border: 1px dashed #dee5ef;
  border-radius: 9px;
  padding: 20px;
}
.reserved-grid article > span {
  color: #9babc2;
  font-size: 11px;
  font-family: ui-monospace, monospace;
}
.reserved-grid h3 {
  margin: 9px 0 8px;
  font-size: 15px;
}
.reserved-grid p {
  margin: 0;
  font-size: 12px;
}
.pending-bottom {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin: 22px 0;
}
.portal-panel {
  padding: 24px;
  border: 1px solid #e0e6ef;
  background: #fff;
  border-radius: 12px;
}
.portal-panel h2 {
  font-size: 18px;
}
.portal-panel p {
  font-size: 13px;
  margin: 12px 0;
}
.muted-state {
  font-size: 11px;
  color: #9aa6ba;
}

/* 5. Module versions, immutable historical links and plain-language changes. */
.iteration-panel {
  padding: 26px;
  margin: 30px 0;
  background: #edf2fc;
  border: 1px solid #e1e8f5;
  border-radius: 14px;
}
.iteration-panel h2 {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 21px;
}
.iteration-panel p {
  font-size: 12px;
  margin: 12px 0 18px;
}
.iteration-map {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}
.iteration-map a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-radius: 8px;
  padding: 13px 15px;
  background: #ffffffb0;
  font-size: 12px;
  color: #60799e;
}
.iteration-map strong {
  font-size: 11px;
  font-weight: 500;
  color: #95a5bf;
}
.version-filter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 30px 0 18px;
}
.version-filter label {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: #6c7f9b;
}
.version-filter select {
  min-width: 170px;
  font-size: 12px;
}
.version-filter > span {
  font-size: 11px;
  color: #9ba8ba;
}
.version-card {
  padding: 30px;
  margin-bottom: 20px;
  border: 1px solid #e0e6ef;
  border-radius: 14px;
  background: #fff;
}
.version-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.version-module-name {
  font-size: 11px;
  color: #95a2b8;
}
.version-card-head h2 {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin: 8px 0 0;
  font-size: 29px;
  color: #5c76af;
}
.version-card-head h2 > span {
  font-size: 19px;
  color: var(--ink);
  font-weight: 600;
}
.version-state {
  text-align: right;
  flex-shrink: 0;
}
.version-state small {
  display: block;
  margin-top: 8px;
  font-size: 10px;
  color: #9ca9bc;
}
.version-card > p {
  margin: 18px 0 12px;
  font-size: 13px;
}
.version-scope {
  padding: 10px 14px;
  background: #f7f9fc;
  border-left: 2px solid #d8e2f2;
  font-size: 12px;
  color: #8a99b0;
}
.version-artifacts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}
.version-artifacts a {
  padding: 8px 14px;
  border: 1px solid #dae4f3;
  color: #5d7bb6;
  font-size: 12px;
  border-radius: 7px;
}
.version-artifacts a:hover {
  background: #eff4fe;
}
.missing-artifact {
  color: #a1a9b7;
  font-size: 12px;
  padding: 9px 0;
}
.version-changes {
  margin-top: 26px;
  border-top: 1px solid #e4eaf3;
  padding-top: 18px;
}
.version-changes summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 550;
  color: #536e9c;
}
.version-changes summary span {
  color: #9aa9be;
  font-size: 10px;
  margin-left: 15px;
  font-weight: 400;
}
.version-changes > p {
  font-size: 11px;
  margin: 16px 0 0;
}
.change-table-wrap {
  margin-top: 15px;
  border: 1px solid #e3e8f1;
  border-radius: 9px;
  overflow: hidden;
}
.change-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 12px;
}
.change-table th,
.change-table td {
  padding: 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid #e6ebf3;
  color: #6d7d94;
  overflow-wrap: anywhere;
}
.change-table th {
  font-size: 10px;
  font-weight: 500;
  color: #8a99b0;
  background: #f5f7fb;
}
.change-table tr:last-child td {
  border: 0;
}
.change-table th:first-child {
  width: 25%;
}
.change-kind {
  display: inline-block;
  background: #eef3fc;
  color: #7791ba;
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 3px;
  margin-bottom: 7px;
}
.change-table td strong {
  display: block;
  font-weight: 550;
}
.version-card .archive-explanation {
  margin-bottom: 0;
  font-size: 11px;
  color: #9b9d9e;
}
.version-empty {
  padding: 55px 24px;
  background: #fff;
  border: 1px dashed #d4dfee;
  border-radius: 14px;
  text-align: center;
}
.empty-revision {
  display: block;
  color: #bac8db;
  font-size: 32px;
  margin-bottom: 10px;
}
.version-empty h2 {
  font-size: 21px;
}
.version-empty p {
  max-width: 500px;
  margin: 15px auto 24px;
  font-size: 13px;
}
.version-guide {
  margin-top: 52px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.version-rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 32px;
}
.version-rule-grid article > span {
  color: #97a6bd;
  font:
    11px ui-monospace,
    monospace;
}
.version-rule-grid h3 {
  font-size: 16px;
  margin: 9px 0 8px;
}
.version-rule-grid p {
  font-size: 12px;
  margin: 0;
}
.version-boundary {
  margin-top: 25px;
  padding: 20px 24px;
  background: #edf2fb;
  border-radius: 10px;
  color: #6e86b0;
  font-size: 13px;
}
.version-boundary p {
  font-size: 12px;
  margin: 8px 0 0;
}

/* 6. Tablet and mobile navigation use a compact top row and horizontal module bar. */
@media (max-width: 1100px) {
  .plan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .portal-prototype-link {
    display: none;
  }
  .context-controls {
    gap: 12px;
  }
  .context-date {
    display: none;
  }
}
@media (max-width: 1023px) {
  html[data-reading-page="document"] {
    scroll-padding-top: calc(var(--portal-stack) + 74px);
  }
  .portal-topbar {
    padding: 12px 26px;
  }
  .portal-module-nav {
    gap: 8px;
  }
  .portal-main {
    padding: 35px 28px 52px;
  }
  .portal-main h1 {
    font-size: 37px;
  }
  .document-context {
    padding: 22px 28px;
  }
  .context-controls {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .context-controls .audience-switch a {
    padding: 7px 12px;
  }
  .portal-shell .document-layout {
    padding-top: 0;
  }
  .portal-shell .reading-sidebar {
    top: var(--portal-stack);
    max-height: none;
    overflow-y: visible;
  }
  .hub-summary {
    gap: 26px;
  }
  .hub-summary p {
    display: none;
  }
  .reserved-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .iteration-map a {
    padding: 11px;
    flex-direction: column;
    gap: 4px;
  }
}
@media (max-width: 699px) {
  .portal-topbar {
    height: 64px;
    padding: 10px 18px;
    gap: 12px;
  }
  .portal-main-nav {
    gap: 0;
  }
  .portal-main-nav a {
    font-size: 11px;
    padding: 8px 10px;
    white-space: nowrap;
  }
  .portal-module-nav {
    justify-content: flex-start;
    height: 48px;
    gap: 3px;
    padding: 0 12px;
  }
  .portal-module-nav a {
    padding: 0 11px;
    font-size: 12px;
    gap: 6px;
  }
  .portal-module-nav small {
    font-size: 8px;
  }
  .module-dot {
    display: none;
  }
  .portal-main {
    padding: 30px 20px 42px;
  }
  .portal-main h1 {
    font-size: 32px;
  }
  .portal-main h2 {
    font-size: 21px;
  }
  .portal-main p {
    font-size: 13px;
  }
  .hub-intro {
    display: block;
  }
  .hub-history-link {
    display: inline-block;
    margin-top: 18px;
    padding: 8px 12px;
    font-size: 11px;
  }
  .hub-summary {
    gap: 0;
    justify-content: space-between;
    padding: 16px 0;
    margin-bottom: 30px;
  }
  .hub-summary div {
    gap: 7px;
  }
  .hub-summary strong {
    font-size: 22px;
  }
  .hub-summary span {
    font-size: 11px;
  }
  .panel-heading {
    align-items: start;
    gap: 12px;
  }
  .quiet-label {
    display: none;
  }
  .plan-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }
  .plan-card,
  .plan-card.featured {
    grid-column: auto;
    padding: 22px;
  }
  .plan-card.featured {
    gap: 14px;
  }
  .hub-phone-preview {
    width: 95px;
    height: 160px;
    border-width: 3px;
    border-radius: 15px;
  }
  .plan-card-top {
    margin-bottom: 14px;
    gap: 8px;
  }
  .featured .module-icon {
    display: none;
  }
  .plan-card h3 {
    font-size: 21px;
  }
  .plan-card p {
    font-size: 12px;
    min-height: auto;
  }
  .plan-card-meta {
    font-size: 9px;
  }
  .plan-card-meta span {
    display: none;
  }
  .plan-card-action {
    gap: 18px;
  }
  .featured .plan-card-action {
    font-size: 11px;
    padding: 10px 12px;
    gap: 16px;
  }
  .secondary-card-link {
    display: block;
    margin: 12px 0 0;
  }
  .hub-updates {
    margin-top: 34px;
  }
  .update-feature {
    padding: 22px;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
  .revision-mark {
    font-size: 26px;
    display: flex;
    gap: 12px;
    align-items: baseline;
  }
  .update-heading h3 {
    font-size: 17px;
  }
  .update-feature p {
    font-size: 12px;
  }
  .hub-guide {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    margin-top: 30px;
    padding-top: 26px;
  }
  .document-context {
    display: block;
    padding: 20px;
  }
  .context-identity {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }
  .context-meta {
    margin: 0;
    gap: 7px;
    font-size: 10px;
  }
  .context-controls {
    margin-top: 16px;
    gap: 12px;
    justify-content: space-between;
  }
  .context-controls .audience-switch {
    padding: 3px;
  }
  .context-controls .audience-switch a {
    font-size: 10px;
    padding: 7px 10px;
  }
  .audience-unavailable {
    padding: 7px 8px;
    font-size: 9px;
  }
  .version-picker {
    gap: 5px;
    font-size: 9px;
  }
  .version-picker select {
    font-size: 10px;
    padding: 8px 42px 8px 10px;
  }
  .context-history {
    font-size: 10px;
  }
  .context-controls .version-picker + .context-history {
    width: 100%;
    text-align: right;
    margin-top: -2px;
  }
  .pending-main {
    padding-top: 10px;
  }
  .pending-hero {
    margin-bottom: 24px;
  }
  .pending-hero .plan-state {
    font-size: 9px;
  }
  .reserved-panel {
    padding: 22px;
  }
  .reserved-panel h2 {
    font-size: 20px;
  }
  .reserved-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
  .reserved-grid article {
    padding: 18px;
  }
  .pending-bottom {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }
  .portal-panel {
    padding: 22px;
  }
  .portal-panel h2 {
    font-size: 17px;
  }
  .iteration-panel {
    padding: 22px 18px;
  }
  .iteration-panel h2 {
    font-size: 20px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .iteration-map {
    gap: 5px;
  }
  .iteration-map a {
    padding: 10px 3px;
    font-size: 10px;
  }
  .iteration-map strong {
    font-size: 9px;
  }
  .version-filter {
    gap: 10px;
  }
  .version-filter label {
    gap: 10px;
    font-size: 11px;
  }
  .version-filter select {
    min-width: 110px;
    font-size: 11px;
  }
  .version-filter > span {
    font-size: 9px;
  }
  .version-card {
    padding: 22px 18px;
  }
  .version-card-head {
    gap: 15px;
    align-items: flex-start;
  }
  .version-card-head h2 {
    font-size: 26px;
    flex-wrap: wrap;
    gap: 5px;
  }
  .version-card-head h2 > span {
    flex-basis: 100%;
    font-size: 17px;
  }
  .version-card > p,
  .version-scope {
    font-size: 12px;
  }
  .version-state small {
    font-size: 9px;
  }
  .version-artifacts {
    gap: 7px;
  }
  .version-artifacts a {
    font-size: 10px;
    padding: 8px 10px;
  }
  .version-changes summary {
    font-size: 12px;
  }
  .version-changes summary span {
    font-size: 9px;
  }
  .change-table,
  .change-table tbody,
  .change-table tr,
  .change-table td {
    display: block;
    width: 100%;
  }
  .change-table thead {
    display: none;
  }
  .change-table tr {
    border-bottom: 1px solid #dfe6f2;
    padding: 5px 0;
  }
  .change-table tr:last-child {
    border-bottom: 0;
  }
  .change-table td {
    border: 0;
    padding: 10px 13px;
    font-size: 11px;
  }
  .change-table td:first-child {
    background: #f5f8fc;
  }
  .change-table td:not(:first-child)::before {
    content: attr(data-label);
    display: block;
    font-size: 9px;
    color: #9aa9c0;
    margin-bottom: 5px;
  }
  .version-rule-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }
  .version-boundary {
    padding: 20px;
    font-size: 12px;
  }
  .version-boundary p {
    font-size: 11px;
  }
  .portal-footer {
    font-size: 10px;
    gap: 12px 20px;
  }
}
@media (max-width: 359px) {
  .portal-topbar {
    padding: 10px 14px;
  }
  .portal-topbar .brand-icon {
    display: none;
  }
  .portal-main,
  .document-context {
    padding-left: 16px;
    padding-right: 16px;
  }
  .portal-main h1 {
    font-size: 29px;
  }
  .plan-card.featured {
    gap: 10px;
    padding: 20px 17px;
  }
  .hub-phone-preview {
    width: 78px;
    height: 132px;
  }
  .featured .plan-card-action {
    gap: 8px;
    font-size: 10px;
  }
  .context-controls {
    gap: 10px 6px;
  }
  .context-controls .audience-switch a {
    padding: 7px 8px;
  }
  .version-picker {
    font-size: 0;
    gap: 0;
  }
  .version-filter select {
    min-width: 100px;
  }
}
@media print {
  .portal-chrome,
  .portal-footer,
  .context-controls,
  .hub-history-link,
  .version-filter {
    display: none !important;
  }
  .portal-main,
  .document-context {
    max-width: none;
    padding: 0;
  }
  .document-context {
    margin-bottom: 20px;
  }
  .plan-card,
  .version-card,
  .reserved-panel,
  .update-feature {
    break-inside: avoid;
    box-shadow: none;
  }
  .hub-phone-preview {
    display: none;
  }
  .portal-shell .reading-sidebar {
    display: none;
  }
}

/* 7. A major version owns its revision timeline; modules are a secondary filter. */
.release-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 30px 0 18px;
}
.release-controls label {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #667a99;
  font-size: 12px;
}
.release-controls select {
  min-width: 250px;
  padding: 11px 44px 11px 14px;
  border: 1px solid #dce4f1;
  border-radius: 9px;
  color: #425f93;
  background-color: #fff;
  font: inherit;
}
.release-controls > span {
  color: #95a4b9;
  font-size: 11px;
}
.release-workspace {
  border: 1px solid #dce5f3;
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}
#release-summary {
  padding: 30px 32px 26px;
  background: linear-gradient(120deg, #edf3ff, #f8faff);
  border-bottom: 1px solid #dfe7f3;
}
.release-summary-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 32px;
}
.release-title-line {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 12px;
}
.release-title-line h2 {
  font-size: 46px;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: #34579e;
  font-weight: 600;
}
.release-summary-head h3 {
  font-size: 17px;
  margin-bottom: 10px;
}
.release-summary-head p {
  font-size: 13px;
  max-width: 680px;
  margin: 0;
}
.release-latest {
  flex-shrink: 0;
  min-width: 110px;
  padding-top: 5px;
  text-align: right;
}
.release-latest span {
  display: block;
  font-size: 10px;
  color: #8b9ab3;
}
.release-latest strong {
  display: block;
  font-size: 21px;
  color: #5d7bb1;
  margin: 6px 0;
  font-weight: 550;
}
.release-latest small {
  font-size: 10px;
  color: #8f9fb8;
}
.release-metrics {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin: 22px 0 18px;
  font-size: 11px;
  color: #8a9ab4;
}
.release-metrics strong {
  color: #5a74a0;
  font-size: 15px;
  font-weight: 550;
  margin-right: 4px;
}
.release-module-map a {
  background: #ffffffd9;
}
.release-revisions {
  padding: 30px 32px;
}
.revision-section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}
.revision-section-heading .portal-eyebrow {
  margin-bottom: 6px;
}
.revision-section-heading h2 {
  font-size: 24px;
}
.revision-section-heading p {
  color: #94a2b6;
  font-size: 11px;
  margin-bottom: 0;
}
.release-revisions .version-filter {
  margin: 22px 0 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid #edf0f5;
}
.revision-item {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: start;
  gap: 20px;
  padding-bottom: 26px;
}
.revision-item::before {
  position: absolute;
  content: "";
  top: 36px;
  left: 17px;
  bottom: 0;
  border-left: 1px solid #dfe7f5;
}
.revision-item:last-child {
  padding-bottom: 0;
}
.revision-item:last-child::before {
  display: none;
}
.revision-marker {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid #dbe4f3;
  border-radius: 50%;
  color: #93a4bf;
  background: #f7f9fd;
  font:
    11px ui-monospace,
    monospace;
}
.revision-marker.latest {
  background: #eaf0ff;
  border-color: #bfcff2;
  color: #4b6abb;
}
.revision-record {
  border: 1px solid #e0e7f2;
  border-radius: 12px;
  padding: 25px;
  min-width: 0;
}
.revision-record-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 22px;
}
.revision-parent {
  color: #7e94b8;
  font-size: 11px;
}
.revision-record h3 {
  margin: 7px 0 0;
  font-size: 19px;
}
.revision-record-state {
  flex-shrink: 0;
  text-align: right;
}
.revision-record-state time {
  display: block;
  margin-top: 8px;
  color: #95a4ba;
  font-size: 10px;
}
.revision-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 15px 0 12px;
  font-size: 10px;
  color: #94a3b9;
}
.revision-record .revision-description {
  font-size: 13px;
  margin-bottom: 14px;
}
.revision-artifact-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.revision-artifact-group > span {
  min-width: 35px;
  font-size: 11px;
  color: #8092b1;
}
.revision-artifact-group .version-artifacts {
  margin: 0;
}
.revision-overview-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 11px;
  color: #6b84b1;
}
.revision-record .archive-explanation,
.revision-record .revision-initial-note {
  margin: 18px 0 0;
  color: #98a2b0;
  font-size: 11px;
}
.release-update-mark {
  font-size: 29px;
  letter-spacing: -1px;
}
.context-controls .version-picker select {
  max-width: 230px;
}
@media (max-width: 699px) {
  .release-controls {
    gap: 10px;
    margin-top: 22px;
  }
  .release-controls label {
    gap: 10px;
    font-size: 11px;
  }
  .release-controls select {
    min-width: 0;
    width: 185px;
    padding: 10px 42px 10px 12px;
  }
  .release-controls > span {
    font-size: 9px;
  }
  #release-summary {
    padding: 24px 18px;
  }
  .release-summary-head {
    gap: 12px;
  }
  .release-title-line {
    gap: 10px;
  }
  .release-title-line h2 {
    font-size: 36px;
  }
  .release-summary-head h3 {
    font-size: 15px;
  }
  .release-summary-head p {
    font-size: 12px;
  }
  .release-latest {
    min-width: 64px;
  }
  .release-latest strong {
    font-size: 15px;
  }
  .release-latest small {
    font-size: 9px;
  }
  .release-metrics {
    gap: 8px 15px;
    font-size: 10px;
    margin: 18px 0 15px;
  }
  .release-metrics strong {
    font-size: 13px;
  }
  .release-revisions {
    padding: 24px 14px;
  }
  .revision-section-heading {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
  .revision-section-heading h2 {
    font-size: 21px;
  }
  .revision-section-heading p {
    font-size: 10px;
  }
  .release-revisions .version-filter {
    margin: 18px 0 24px;
    padding-bottom: 18px;
  }
  .revision-item {
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
    padding-bottom: 20px;
  }
  .revision-marker {
    width: 26px;
    height: 26px;
    font-size: 9px;
  }
  .revision-item::before {
    top: 26px;
    left: 12px;
  }
  .revision-record {
    padding: 17px 14px;
  }
  .revision-record-head {
    flex-direction: column;
    gap: 12px;
  }
  .revision-record h3 {
    font-size: 17px;
  }
  .revision-record-state {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
  }
  .revision-record-state time {
    margin: 0;
    font-size: 9px;
  }
  .revision-meta {
    gap: 7px;
    font-size: 9px;
  }
  .revision-meta span:last-child {
    flex-basis: 100%;
  }
  .revision-record .revision-description {
    font-size: 12px;
  }
  .revision-record .version-scope {
    padding: 10px;
    font-size: 11px;
  }
  .revision-artifact-group {
    gap: 8px;
  }
  .revision-artifact-group > span {
    flex-basis: 100%;
  }
  .revision-artifact-group .version-artifacts {
    gap: 6px;
  }
  .revision-artifact-group .version-artifacts a {
    font-size: 9px;
    padding: 7px;
  }
  .revision-record .version-changes summary {
    font-size: 11px;
  }
  .revision-record .version-changes summary span {
    display: block;
    margin: 7px 0 0;
    font-size: 9px;
  }
  .revision-record .change-table td {
    padding: 10px;
  }
  .revision-record .archive-explanation {
    font-size: 10px;
  }
  .context-controls .version-picker select {
    max-width: 195px;
  }
  .context-controls .audience-switch {
    flex-shrink: 0;
  }
}
@media (max-width: 359px) {
  .release-controls {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
  .release-summary-head {
    display: block;
  }
  .release-latest {
    margin-top: 14px;
    padding: 12px 0 0;
    display: flex;
    text-align: left;
    align-items: center;
    gap: 10px;
    border-top: 1px solid #e0e8f5;
  }
  .release-latest strong {
    margin: 0;
  }
  .revision-item {
    grid-template-columns: minmax(0, 1fr);
  }
  .revision-item::before {
    display: none;
  }
  .revision-marker {
    display: none;
  }
  .context-controls .version-picker {
    flex-basis: 100%;
  }
  .context-controls .version-picker select {
    width: 100%;
    max-width: none;
  }
}
@media print {
  .release-controls,
  .release-revisions .version-filter {
    display: none;
  }
  .release-workspace {
    overflow: visible;
  }
  .revision-record {
    break-inside: avoid;
  }
}

/* 智能体方案：普通阅读版的并列说明与入口目录。 */
.agent-plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 24px 0;
}
.agent-plan-card {
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  margin-bottom: 18px;
  min-width: 0;
}
.agent-plan-grid .agent-plan-card {
  margin: 0;
}
.agent-plan-card h3 {
  font-size: 17px;
  margin-bottom: 12px;
}
.agent-plan-card p,
.agent-plan-steps {
  font-size: 14px;
  line-height: 1.95;
  color: #617087;
  overflow-wrap: anywhere;
}
.agent-plan-steps {
  padding-left: 20px;
}
.agent-plan-steps li + li {
  margin-top: 10px;
}
.agent-model-roster {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 24px 0;
}
.agent-model-roster span {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid #dbe2ef;
  background: #f1f5fc;
  border-radius: 12px;
  padding: 14px;
  font-size: 13px;
  min-width: 0;
  overflow-wrap: anywhere;
}
.agent-model-roster small {
  color: #7e94b9;
  font-size: 10px;
}
@media (max-width: 700px) {
  .agent-plan-grid {
    grid-template-columns: 1fr;
  }
  .agent-plan-card {
    padding: 20px;
  }
  .agent-model-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}