:root {
  --ink: #172235;
  --muted: #667085;
  --line: #d9e0ea;
  --line-strong: #bdc8d8;
  --paper: #ffffff;
  --canvas: #f2f5f7;
  --accent: #245b78;
  --accent-strong: #17465f;
  --accent-soft: #e8f1f6;
  --success: #137a52;
  --success-soft: #eaf7f1;
  --warning: #96620a;
  --warning-soft: #fff6dc;
  --danger: #b42318;
  --danger-soft: #fff0ee;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(16 24 40 / 4%), 0 12px 32px rgb(23 70 95 / 7%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--canvas);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid var(--accent);
  border-radius: 9px;
  padding: 0.55rem 0.9rem;
  color: #fff;
  background: var(--accent);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

button.secondary,
.button.secondary {
  border-color: var(--line-strong);
  color: var(--ink);
  background: var(--paper);
}

button.ghost,
.button.ghost {
  border-color: transparent;
  color: var(--accent);
  background: transparent;
}

button:hover,
.button:hover {
  filter: brightness(0.96);
}

:focus-visible {
  outline: 3px solid rgb(36 95 190 / 35%);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-150%);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  color: #fff;
  background: var(--ink);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  display: grid;
  min-height: 72px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.25rem;
  border-bottom: 1px solid rgb(217 224 234 / 90%);
  padding: 0.65rem clamp(1rem, 3vw, 3rem);
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 1px 0 rgb(16 24 40 / 2%);
  backdrop-filter: blur(16px);
}

.brand {
  color: var(--ink);
  font-size: 1.22rem;
  font-weight: 850;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.header-context {
  min-width: 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-actions form {
  margin: 0;
}

.page {
  width: min(1760px, 100%);
  margin: 0 auto;
  padding: clamp(1rem, 2.5vw, 2.5rem);
}

.page-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-heading h1,
.content-heading h1 {
  margin: 0;
  font-size: clamp(1.65rem, 2.4vw, 2.35rem);
  line-height: 1.14;
  letter-spacing: -0.035em;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.muted {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.24rem 0.58rem;
  color: var(--muted);
  background: var(--paper);
  font-size: 0.8rem;
  font-weight: 750;
  white-space: nowrap;
}

.badge.current,
.badge.done {
  border-color: #a6dfc7;
  color: var(--success);
  background: var(--success-soft);
}

.badge.changed {
  border-color: #f1cf79;
  color: var(--warning);
  background: var(--warning-soft);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr));
  gap: 1rem;
}

.card,
.project-card,
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.project-card {
  display: grid;
  min-height: 230px;
  align-content: space-between;
  gap: 1.25rem;
  padding: 1.45rem;
  color: inherit;
  text-decoration: none;
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 16px 38px rgb(23 70 95 / 12%);
  transform: translateY(-1px);
}

.project-card h2 {
  margin: 0.2rem 0 0.5rem;
  font-size: 1.25rem;
  line-height: 1.25;
}

.empty-state,
.narrow-page {
  max-width: 720px;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.project-meta,
.progress-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.project-open {
  margin-left: auto;
  color: var(--accent);
  font-weight: 800;
}

.review-layout {
  display: grid;
  width: min(1880px, 100%);
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  grid-template-columns: 292px minmax(560px, 1fr) minmax(330px, 370px);
}

.review-nav,
.review-rail {
  position: sticky;
  top: 72px;
  align-self: start;
  height: calc(100vh - 72px);
  overflow: auto;
  background: var(--paper);
}

.review-nav {
  border-right: 1px solid var(--line);
  padding: 1.45rem 1.1rem;
}

.review-rail {
  border-left: 1px solid var(--line);
  padding: 1.4rem;
  background: #fbfcfd;
}

.review-content {
  min-width: 0;
  padding: clamp(1.4rem, 2.7vw, 3rem);
}

.content-heading {
  max-width: 960px;
  margin: 0 auto 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.2rem, 2.4vw, 2rem);
  background:
    linear-gradient(120deg, rgb(232 241 246 / 88%), rgb(255 255 255 / 80%) 58%),
    var(--paper);
  box-shadow: 0 8px 24px rgb(23 70 95 / 5%);
}

.toc {
  display: grid;
  gap: 0.22rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.toc a {
  display: grid;
  grid-template-columns: 1.65rem minmax(0, 1fr);
  align-items: start;
  gap: 0.55rem;
  border-radius: 9px;
  padding: 0.56rem 0.62rem;
  color: var(--ink);
  font-size: 0.9rem;
  text-decoration: none;
}

.toc a:hover,
.toc a[aria-current="true"] {
  background: var(--accent-soft);
}

.toc-marker {
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: var(--muted);
  background: #fff;
  font-size: 0.72rem;
  font-weight: 850;
}

.toc-marker.active {
  border-color: #8fb8ca;
  color: var(--accent);
  background: var(--accent-soft);
}

.toc-marker.done {
  border-color: #a6dfc7;
  color: var(--success);
  background: var(--success-soft);
}

.toc-copy {
  display: grid;
  gap: 0.12rem;
}

.toc-status {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.view-switcher {
  display: grid;
  gap: 0.4rem;
  margin: 0.65rem 0 1.35rem;
}

.view-switcher a {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.62rem 0.7rem;
  color: var(--ink);
  background: #fff;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
}

.view-switcher a:hover,
.view-switcher a[aria-current="page"] {
  border-color: #9ebdcd;
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.content-block {
  position: relative;
  max-width: 960px;
  margin: 0 auto 1.25rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(1.2rem, 2.3vw, 2rem);
  background: var(--paper);
  box-shadow: var(--shadow);
  scroll-margin-top: 92px;
}

.content-block.accent-blue {
  border-left-color: var(--accent);
}

.content-block.accent-amber {
  border-left-color: var(--warning);
  background: #fffdf6;
}

.content-block.accent-purple {
  border-left-color: #7b4fb5;
}

.content-block.accent-green {
  border-left-color: var(--success);
}

.block-kicker {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

.block-index {
  display: grid;
  min-width: 2.25rem;
  height: 2.05rem;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--accent);
  font-size: 0.83rem;
  font-weight: 850;
}

.block-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.content-block h2,
.content-block h3 {
  margin: 0 0 0.75rem;
  line-height: 1.25;
  letter-spacing: -0.018em;
}

.content-block p:last-child {
  margin-bottom: 0;
}

.markdown-body {
  overflow-wrap: anywhere;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body > :last-child {
  margin-bottom: 0;
}

.markdown-body pre {
  max-width: 100%;
  overflow: auto;
  border-radius: 8px;
  padding: 0.85rem;
  background: #f1f4f8;
}

.markdown-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.6rem;
}

.source-excerpt,
.calculation-grid {
  margin-top: 1rem;
  border: 1px solid #c9dce6;
  border-radius: 11px;
  padding: 1.05rem;
  background: #f5f9fb;
}

.source-locator {
  display: inline-flex;
  margin: 0 0 0.9rem;
  border: 1px solid #b9d1dd;
  border-radius: 999px;
  padding: 0.26rem 0.62rem;
  color: var(--accent-strong);
  background: #fff;
  font-size: 0.82rem;
}

.source-integrity {
  margin: -0.35rem 0 0.9rem;
  color: var(--success);
  font-size: 0.82rem;
  font-weight: 700;
}

.source-integrity.warning {
  border-left: 3px solid #d39a2c;
  padding-left: 0.6rem;
  color: var(--warning);
}

.calculation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 1.25rem;
}

.calculation-grid dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.calculation-grid dd {
  margin: 0.1rem 0 0;
  font-variant-numeric: tabular-nums;
}

.calculation-panel,
.question-panel,
.block-review-actions {
  margin-top: 1.1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

.block-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.35rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

.block-pagination a {
  display: grid;
  gap: 0.15rem;
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  color: var(--ink);
  background: #fafcfd;
  font-size: 0.87rem;
  text-decoration: none;
}

.block-pagination a:hover {
  border-color: #9ebdcd;
  background: var(--accent-soft);
}

.block-pagination a.next {
  grid-column: 2;
  text-align: right;
}

.block-pagination span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.question-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.question-heading .markdown-body {
  font-weight: 700;
}

.block-review-actions {
  display: grid;
  gap: 0.9rem;
}

.review-comment,
.owner-note {
  margin: 1rem 0 0;
  border-left: 4px solid var(--accent);
  padding: 0.7rem 0.85rem;
  background: var(--accent-soft);
}

.owner-note {
  border-left-color: var(--warning);
  background: var(--warning-soft);
}

.release-meta {
  margin-top: 0.75rem;
}

.notice {
  margin-top: 1rem;
  border-color: var(--line-strong);
  color: var(--ink);
  background: var(--accent-soft);
}

.version-picker {
  margin-bottom: 1.5rem;
}

.toc-heading {
  margin-top: 1.25rem;
}

.owner-summary h3 {
  margin: 1rem 0 0.5rem;
  font-size: 0.9rem;
}

.summary-entry {
  margin-top: 0.75rem;
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.summary-entry p {
  margin: 0.25rem 0 0;
}

.rail-section + .rail-section {
  margin-top: 1.25rem;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.rail-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.form-stack {
  display: grid;
  gap: 0.8rem;
}

label {
  display: block;
  color: var(--ink);
  font-weight: 700;
}

input[type="email"],
input[type="text"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  color: var(--ink);
  background: var(--paper);
}

textarea {
  min-height: 112px;
  resize: vertical;
}

.choice {
  display: grid;
  grid-template-columns: 1.2rem minmax(0, 1fr);
  align-items: start;
  gap: 0.5rem;
  font-weight: 500;
}

.alert {
  border: 1px solid #f4b4ae;
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--danger);
  background: var(--danger-soft);
}

.auth-page {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 100vh;
  place-items: center;
  overflow-x: hidden;
  overflow-y: auto;
  padding: clamp(1.25rem, 4vw, 3rem);
  background:
    radial-gradient(circle at 10% 10%, rgb(84 145 173 / 20%) 0, transparent 32%),
    radial-gradient(circle at 90% 88%, rgb(36 91 120 / 15%) 0, transparent 34%),
    linear-gradient(145deg, #f7fafb 0%, #eaf0f3 100%);
}

.auth-page::before,
.auth-page::after {
  position: fixed;
  z-index: -1;
  border: 1px solid rgb(36 91 120 / 12%);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.auth-page::before {
  width: min(46vw, 640px);
  height: min(46vw, 640px);
  top: -28vw;
  right: -12vw;
}

.auth-page::after {
  width: min(34vw, 460px);
  height: min(34vw, 460px);
  bottom: -22vw;
  left: -10vw;
}

.auth-shell {
  z-index: 1;
  display: grid;
  width: min(470px, 100%);
  place-items: center;
}

.auth-card {
  width: 100%;
  border: 1px solid rgb(189 200 216 / 85%);
  border-radius: 22px;
  padding: clamp(1.65rem, 5vw, 2.75rem);
  background: var(--paper);
  box-shadow:
    0 2px 4px rgb(16 24 40 / 5%),
    0 24px 64px rgb(23 70 95 / 12%);
}

.auth-mark {
  display: grid;
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: linear-gradient(145deg, #2e7396, var(--accent-strong));
  box-shadow: 0 10px 24px rgb(36 91 120 / 24%);
  font-size: 1.35rem;
  font-weight: 850;
  letter-spacing: -0.04em;
}

.auth-card h1 {
  margin: 0;
  text-align: center;
  font-size: clamp(1.85rem, 5vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.auth-intro {
  max-width: 34ch;
  margin: 0.8rem auto 0;
  color: var(--muted);
  text-align: center;
}

.auth-form {
  margin-top: 1.75rem;
}

.auth-form input {
  min-height: 50px;
  border-radius: 10px;
  padding: 0.72rem 0.85rem;
  background: #fcfdfe;
}

.auth-form input::placeholder {
  color: #98a2b3;
}

.auth-form button {
  width: 100%;
  min-height: 48px;
  margin-top: 0.2rem;
  border-radius: 10px;
  box-shadow: 0 8px 18px rgb(36 91 120 / 16%);
}

.otp-input {
  text-align: center;
  font-size: 1.28rem;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
  letter-spacing: 0.3em;
}

.auth-secondary {
  margin-top: 0.8rem;
}

button.button-link {
  min-height: auto;
  margin: 0 auto;
  border-color: transparent;
  padding: 0.4rem 0.6rem;
  color: var(--accent);
  background: transparent;
  box-shadow: none;
  font-weight: 700;
}

.auth-wide-action {
  width: 100%;
  margin-top: 1rem;
}

@media (max-width: 1320px) {
  .review-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .review-rail {
    position: static;
    grid-column: 2;
    height: auto;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-context {
    display: none;
  }

  .review-layout {
    display: block;
  }

  .review-nav,
  .review-rail {
    position: static;
    width: auto;
    height: auto;
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .review-content {
    padding: 1rem;
  }

  .content-heading {
    padding: 1.15rem;
  }

  .block-pagination {
    grid-template-columns: 1fr;
  }

  .block-pagination a.next {
    grid-column: 1;
    text-align: left;
  }

  .calculation-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}