:root {
  --bg: #f7f9fb;
  --surface: #ffffff;
  --surface-strong: #eef5f5;
  --ink: #14252b;
  --muted: #617177;
  --line: #dbe5e7;
  --primary: #0f6d72;
  --primary-dark: #0b4d51;
  --accent: #d89530;
  --shadow: 0 18px 50px rgba(20, 37, 43, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-dark);
}

.navbar {
  background: rgba(247, 249, 251, 0.88);
  border-bottom: 1px solid rgba(219, 229, 231, 0.78);
  backdrop-filter: blur(18px);
  transition: box-shadow 220ms ease, background-color 220ms ease;
}

.navbar.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 28px rgba(20, 37, 43, 0.08);
}

.navbar-brand {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  background: var(--primary);
  border-radius: var(--radius);
  box-shadow: 0 10px 24px rgba(15, 109, 114, 0.24);
  color: #fff;
  display: inline-grid;
  font-size: 0.9rem;
  height: 38px;
  place-items: center;
  width: 38px;
}

.nav-link {
  color: #33464d;
  font-weight: 650;
  padding-inline: 0.85rem !important;
}

.nav-link.active,
.nav-link:hover {
  color: var(--primary);
}

.btn {
  align-items: center;
  border-radius: var(--radius);
  display: inline-flex;
  font-weight: 750;
  gap: 0.55rem;
  justify-content: center;
  letter-spacing: 0;
}

.btn-primary {
  --bs-btn-bg: var(--primary);
  --bs-btn-border-color: var(--primary);
  --bs-btn-hover-bg: var(--primary-dark);
  --bs-btn-hover-border-color: var(--primary-dark);
  --bs-btn-active-bg: var(--primary-dark);
  --bs-btn-active-border-color: var(--primary-dark);
  box-shadow: 0 12px 24px rgba(15, 109, 114, 0.2);
}

.btn-outline-dark {
  --bs-btn-color: var(--ink);
  --bs-btn-border-color: #9fb1b6;
  --bs-btn-hover-bg: var(--ink);
  --bs-btn-hover-border-color: var(--ink);
}

.project-hero {
  align-items: center;
  background:
    linear-gradient(90deg, rgba(15, 109, 114, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(15, 109, 114, 0.06) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  display: flex;
  min-height: 100vh;
  padding: 136px 0 96px;
}

.eyebrow,
.section-kicker {
  align-items: center;
  color: var(--primary);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 850;
  gap: 0.5rem;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.eyebrow::before,
.section-kicker::before {
  background: var(--accent);
  content: "";
  display: inline-block;
  height: 2px;
  width: 34px;
}

.project-hero h1 {
  color: var(--ink);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.96;
  margin-bottom: 1.25rem;
}

.hero-lead {
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.28rem);
  margin-bottom: 2rem;
  max-width: 680px;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.metric-strip {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2rem;
  max-width: 640px;
  padding-top: 1.35rem;
}

.metric-strip strong {
  color: var(--primary-dark);
  display: block;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1;
}

.metric-strip span {
  color: var(--muted);
  display: block;
  font-size: 0.9rem;
  margin-top: 0.35rem;
}

.product-board {
  background: var(--surface);
  border: 1px solid rgba(219, 229, 231, 0.96);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.board-header {
  align-items: center;
  background: var(--ink);
  color: #fff;
  display: flex;
  gap: 0.45rem;
  min-height: 54px;
  padding: 0.75rem 1rem;
}

.board-header span {
  background: rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  display: inline-flex;
  height: 10px;
  width: 10px;
}

.board-header strong {
  font-size: 0.9rem;
  margin-left: auto;
}

.board-grid {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  min-height: 460px;
}

.board-sidebar {
  background: #edf5f5;
  border-right: 1px solid var(--line);
  display: grid;
  gap: 0.6rem;
  align-content: start;
  padding: 1rem;
}

.board-sidebar span {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: #33464d;
  display: flex;
  font-size: 0.85rem;
  font-weight: 800;
  gap: 0.5rem;
  min-height: 40px;
  padding: 0.55rem 0.65rem;
}

.board-sidebar span.active {
  background: #fff;
  border-color: rgba(15, 109, 114, 0.22);
  color: var(--primary-dark);
}

.board-main {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.status-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.status-row div,
.answer-card,
.flow-line {
  background: #f8fbfb;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.status-row div {
  padding: 0.85rem;
}

.status-row span {
  color: var(--muted);
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.status-row strong {
  color: var(--primary-dark);
  display: block;
  font-size: 1.45rem;
}

.flow-line {
  align-items: center;
  display: grid;
  gap: 0.45rem;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  padding: 1rem;
  text-align: center;
}

.flow-line span {
  background: #fff;
  border: 1px solid rgba(15, 109, 114, 0.15);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 850;
  padding: 0.65rem 0.4rem;
}

.flow-line i {
  color: var(--accent);
}

.answer-card {
  align-self: stretch;
  padding: 1rem;
}

.answer-card strong {
  color: var(--ink);
  display: block;
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.answer-card p {
  color: var(--muted);
  margin-bottom: 1rem;
}

.citation-row {
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #33464d;
  display: flex;
  font-size: 0.88rem;
  font-weight: 750;
  justify-content: space-between;
  padding: 0.65rem 0.75rem;
}

.citation-row + .citation-row {
  margin-top: 0.6rem;
}

.section-pad {
  padding: 104px 0;
}

.section-muted {
  background: var(--surface-strong);
}

.section-heading {
  margin-bottom: 2.5rem;
  max-width: 820px;
}

.section-heading h2,
.section-title {
  color: var(--ink);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.04;
  margin-bottom: 1rem;
}

.section-heading p,
.section-text {
  color: var(--muted);
  font-size: 1.05rem;
}

.value-card,
.timeline-item,
.integration-grid article,
.governance-grid article,
.closing-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.value-card {
  height: 100%;
  padding: 1.5rem;
}

.value-card i,
.integration-grid i {
  align-items: center;
  background: rgba(15, 109, 114, 0.1);
  border-radius: var(--radius);
  color: var(--primary);
  display: inline-flex;
  font-size: 1.4rem;
  height: 46px;
  justify-content: center;
  margin-bottom: 1.1rem;
  width: 46px;
}

.value-card h2,
.timeline-item h3,
.integration-grid h3 {
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 850;
  margin-bottom: 0.7rem;
}

.value-card p,
.timeline-item p,
.integration-grid p,
.governance-grid p,
.closing-panel p {
  color: var(--muted);
  margin-bottom: 0;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  gap: 1rem;
  grid-template-columns: auto minmax(0, 1fr);
  padding: 1.2rem;
}

.timeline-item > span {
  align-items: center;
  background: var(--primary);
  border-radius: var(--radius);
  color: #fff;
  display: inline-flex;
  font-weight: 900;
  height: 46px;
  justify-content: center;
  width: 46px;
}

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

.integration-grid article,
.governance-grid article {
  height: 100%;
  padding: 1.3rem;
}

.governance-grid strong {
  color: var(--ink);
  display: block;
  font-size: 1.05rem;
  font-weight: 850;
  margin-bottom: 0.55rem;
}

.docs-intro {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(15, 109, 114, 0.1), transparent 42%),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  padding: 1.5rem;
}

.docs-intro i {
  align-items: center;
  background: rgba(15, 109, 114, 0.1);
  border-radius: var(--radius);
  color: var(--primary);
  display: inline-flex;
  font-size: 1.4rem;
  height: 46px;
  justify-content: center;
  margin-bottom: 1rem;
  width: 46px;
}

.docs-intro h3 {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 850;
  margin-bottom: 0.6rem;
}

.docs-intro p {
  color: var(--muted);
  margin-bottom: 0;
  max-width: 760px;
}

.docs-intro-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.markdown-body {
  background: #fff;
  color: var(--ink);
  margin: 0;
  padding: clamp(1rem, 3vw, 2rem);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  color: var(--ink);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.12;
}

.markdown-body h1 {
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin: 0 0 1.25rem;
  padding-bottom: 1rem;
}

.markdown-body h2 {
  color: var(--primary-dark);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  margin: 2rem 0 0.75rem;
}

.markdown-body h3,
.markdown-body h4 {
  font-size: 1.1rem;
  margin: 1.35rem 0 0.6rem;
}

.markdown-body p,
.markdown-body li {
  color: #405259;
  font-size: 1rem;
}

.markdown-body p {
  margin-bottom: 0.9rem;
}

.markdown-body ul,
.markdown-body ol {
  margin: 0.3rem 0 1rem;
  padding-left: 1.35rem;
}

.markdown-body li + li {
  margin-top: 0.35rem;
}

.markdown-body code {
  background: rgba(20, 37, 43, 0.08);
  border-radius: 4px;
  color: var(--primary-dark);
  font-size: 0.9em;
  padding: 0.12rem 0.3rem;
}

.docs-page {
  background: #eef5f5;
}

.docs-hero {
  background:
    linear-gradient(90deg, rgba(15, 109, 114, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(15, 109, 114, 0.06) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  padding: 136px 0 72px;
}

.docs-hero-inner {
  max-width: 920px;
}

.docs-hero h1 {
  color: var(--ink);
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.98;
  margin-bottom: 1rem;
}

.docs-hero p {
  color: var(--muted);
  font-size: clamp(1.04rem, 2vw, 1.25rem);
  margin-bottom: 2rem;
  max-width: 820px;
}

.docs-shell {
  padding: 48px 0 104px;
}

.docs-layout {
  align-items: start;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 280px minmax(0, 1fr);
}

.docs-toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(20, 37, 43, 0.08);
  padding: 1rem;
  position: sticky;
  top: 96px;
}

.docs-toc strong {
  color: var(--ink);
  display: block;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.docs-toc nav {
  display: grid;
  gap: 0.35rem;
}

.docs-toc a {
  border-radius: var(--radius);
  color: #405259;
  display: block;
  font-size: 0.92rem;
  font-weight: 750;
  line-height: 1.25;
  padding: 0.55rem 0.65rem;
}

.docs-toc a:hover {
  background: rgba(15, 109, 114, 0.08);
  color: var(--primary-dark);
}

.docs-article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(20, 37, 43, 0.1);
}

.closing-section {
  background:
    linear-gradient(135deg, rgba(216, 149, 48, 0.09), transparent 38%),
    var(--bg);
}

.closing-panel {
  align-items: center;
  box-shadow: var(--shadow);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  padding: 2rem;
}

.closing-panel h2 {
  color: var(--ink);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.06;
  margin-bottom: 0.85rem;
}

.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.76);
  padding: 1.4rem 0;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a,
.back-to-top {
  align-items: center;
  border-radius: var(--radius);
  display: inline-flex;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.footer-social a {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--ink);
}

.back-to-top {
  background: var(--primary);
  border: 0;
  bottom: 92px;
  box-shadow: 0 12px 28px rgba(15, 109, 114, 0.28);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  position: fixed;
  right: 30px;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 1000;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 120ms;
}

.delay-2 {
  transition-delay: 220ms;
}

.delay-3 {
  transition-delay: 320ms;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-top: 0.8rem;
    padding: 1rem;
  }

  .project-hero {
    min-height: auto;
    padding-top: 124px;
  }

  .section-pad {
    padding: 84px 0;
  }

  .closing-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .docs-intro {
    align-items: flex-start;
    flex-direction: column;
  }

  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-toc {
    position: static;
  }
}

@media (max-width: 767.98px) {
  .board-grid {
    grid-template-columns: 1fr;
  }

  .board-sidebar {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .status-row,
  .metric-strip,
  .integration-grid,
  .governance-grid {
    grid-template-columns: 1fr;
  }

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

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

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575.98px) {
  .hero-actions .btn,
  .closing-actions .btn,
  .docs-intro-actions .btn {
    width: 100%;
  }

  .project-hero h1 {
    font-size: 3rem;
  }

  .board-sidebar {
    grid-template-columns: 1fr;
  }

  .board-main,
  .closing-panel {
    padding: 1rem;
  }

  .back-to-top {
    bottom: 88px;
    right: 26px;
  }
}