:root {
  --navy-950: #050b18;
  --navy-900: #081225;
  --navy-850: #0b1830;
  --navy-800: #102033;
  --ink: #102033;
  --muted: #526174;
  --soft-muted: #6f8099;
  --bg: #f7fbff;
  --bg-blue: #eef7ff;
  --surface: #ffffff;
  --surface-blue: #f4f9ff;
  --line: #d7e4ff;
  --line-strong: #cbd8f2;
  --cyan: #45d7ff;
  --cyan-dark: #0879a5;
  --cyan-soft: #e8f7ff;
  --warning: #fff6e6;
  --warning-line: #ffd28a;
  --danger: #b8332a;
  --shadow: 0 20px 60px rgba(8, 18, 37, 0.12);
  --tight-shadow: 0 10px 28px rgba(8, 18, 37, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 0%, rgba(69, 215, 255, 0.18), transparent 34rem),
    radial-gradient(circle at 85% 10%, rgba(8, 121, 165, 0.12), transparent 28rem),
    var(--bg);
  color: var(--ink);
  font-family:
    "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo,
    sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 100;
  border-radius: 8px;
  background: var(--cyan);
  color: var(--navy-950);
  padding: 0.65rem 1rem;
  font-weight: 700;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-bottom: 1px solid rgba(217, 230, 255, 0.18);
  background: rgba(5, 11, 24, 0.94);
  color: #fff;
  padding: 0.9rem clamp(1rem, 4vw, 3rem);
  backdrop-filter: blur(18px);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
}

.logo-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--cyan);
}

.topnav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.topnav a,
.trial-link {
  border-radius: 8px;
  color: #d9e6ff;
  padding: 0.5rem 0.75rem;
  text-decoration: none;
}

.topnav a:hover,
.trial-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.trial-link {
  border: 1px solid rgba(69, 215, 255, 0.5);
  color: #fff;
  font-weight: 700;
}

.hero {
  background:
    linear-gradient(135deg, rgba(5, 11, 24, 0.98), rgba(8, 18, 37, 0.94)),
    radial-gradient(circle at 70% 20%, rgba(69, 215, 255, 0.22), transparent 24rem);
  color: #fff;
  padding: clamp(3rem, 7vw, 6rem) clamp(1rem, 4vw, 3rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  gap: clamp(2rem, 5vw, 4rem);
  max-width: 1280px;
  margin: 0 auto;
  align-items: center;
}

.hero-copy {
  display: grid;
  gap: 1.2rem;
}

.kicker-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.kicker-row span {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #d9e6ff;
  padding: 0.32rem 0.65rem;
  font-size: 0.84rem;
  font-weight: 700;
}

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

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.28;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.25rem, 5vw, 4.2rem);
  font-weight: 800;
}

h2 {
  margin-top: 0.25rem;
  font-size: clamp(1.65rem, 3vw, 2.55rem);
}

h3 {
  font-size: 1.08rem;
}

p {
  margin: 0;
}

.hero-lead {
  max-width: 780px;
  color: #d9e6ff;
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.4rem;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  min-height: 2.85rem;
  border-radius: 8px;
  padding: 0.75rem 1.05rem;
  font-weight: 800;
  text-decoration: none;
}

.primary-action {
  background: var(--cyan);
  color: var(--navy-950);
}

.secondary-action {
  border: 1px solid rgba(217, 230, 255, 0.3);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.hero-panel {
  display: grid;
  gap: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  padding: 1rem;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

.panel-title {
  color: #d9e6ff;
  font-weight: 800;
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.9rem;
  color: #fff;
  font-weight: 700;
}

.metric-number {
  color: var(--cyan);
  font-weight: 900;
}

.manual-shell {
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem);
}

.sidebar {
  position: sticky;
  top: 5rem;
  align-self: start;
  display: grid;
  gap: 1rem;
}

.search-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 0.9rem;
  box-shadow: var(--tight-shadow);
}

.search-box label {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

.search-box input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  color: var(--ink);
  font: inherit;
  padding: 0.7rem;
  outline: none;
}

.search-box input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(69, 215, 255, 0.22);
}

.sidebar nav {
  display: grid;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 0.55rem;
  box-shadow: var(--tight-shadow);
}

.sidebar nav a {
  border-radius: 6px;
  color: var(--muted);
  padding: 0.52rem 0.62rem;
  text-decoration: none;
}

.sidebar nav a:hover,
.sidebar nav a.active {
  background: var(--cyan-soft);
  color: var(--cyan-dark);
  font-weight: 700;
}

.content {
  display: grid;
  gap: 1.1rem;
}

.manual-section {
  scroll-margin-top: 5.8rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  padding: clamp(1.2rem, 3vw, 2.25rem);
  box-shadow: var(--shadow);
}

.manual-section.is-hidden {
  display: none;
}

.manual-section > p:not(.section-label),
.manual-section > ul,
.manual-section > ol {
  margin-top: 0.9rem;
}

.intro-section {
  background:
    linear-gradient(180deg, rgba(232, 247, 255, 0.72), rgba(255, 255, 255, 0.96));
}

.scope-grid,
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.1rem;
}

.scope-grid > div,
.command-card,
.diagnostic-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 1rem;
}

ul,
ol {
  margin: 0.7rem 0 0;
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

.timeline {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.2rem;
  padding: 0;
}

.timeline li {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 1rem;
  list-style: none;
}

.step-no,
.card-index {
  color: var(--cyan-dark);
  font-weight: 900;
}

.step-no {
  font-size: 1.2rem;
}

.card-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.1rem;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card-grid article,
.settings-list > div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 1rem;
}

.card-grid article h3,
.settings-list h3 {
  margin-top: 0.2rem;
  margin-bottom: 0.45rem;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.1rem;
}

.process-line > div {
  position: relative;
  border-top: 4px solid var(--cyan);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 1rem;
}

.note,
.warning {
  margin-top: 1rem;
  border-radius: 8px;
  padding: 1rem;
}

.note {
  border: 1px solid rgba(69, 215, 255, 0.5);
  background: var(--cyan-soft);
}

.warning {
  border: 1px solid var(--warning-line);
  background: var(--warning);
}

.dense-list {
  columns: 2;
  column-gap: 2rem;
}

.command-card dl {
  margin: 0.8rem 0 0;
}

.command-card dt {
  color: var(--cyan-dark);
  font-weight: 900;
}

.command-card dd {
  margin: 0.1rem 0 0.65rem;
  color: var(--muted);
}

table {
  width: 100%;
  margin-top: 0.9rem;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.78rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: #e8f7ff;
  color: var(--cyan-dark);
  font-size: 0.92rem;
}

tr:last-child td {
  border-bottom: 0;
}

.settings-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.1rem;
}

.checklist {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.1rem;
}

.checklist label {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 0.9rem;
}

.checklist input {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.3rem;
  accent-color: var(--cyan-dark);
}

.faq {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.1rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 0.9rem 1rem;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin-top: 0.6rem;
  color: var(--muted);
}

.glossary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.glossary div {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 0.8rem;
}

.glossary strong {
  color: var(--cyan-dark);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  background: var(--navy-950);
  color: #d9e6ff;
  padding: 1.4rem clamp(1rem, 4vw, 3rem);
}

.footer div:first-child {
  display: grid;
  gap: 0.2rem;
}

.document-home,
.simple-page {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 3rem);
}

.doc-home-hero h1 {
  max-width: 760px;
}

.doc-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.1rem;
}

.doc-card {
  display: grid;
  align-content: start;
  min-height: 15rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  color: var(--ink);
  padding: 1rem;
  text-decoration: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.doc-card:hover {
  border-color: rgba(69, 215, 255, 0.75);
  box-shadow: var(--tight-shadow);
  transform: translateY(-2px);
}

.doc-card.primary-doc {
  background:
    linear-gradient(135deg, rgba(232, 247, 255, 0.95), rgba(255, 255, 255, 0.96));
  border-color: rgba(69, 215, 255, 0.75);
}

.doc-card h3 {
  margin: 0.2rem 0 0.5rem;
}

.card-link {
  align-self: end;
  display: inline-flex;
  width: fit-content;
  margin-top: 1rem;
  border-radius: 8px;
  background: var(--navy-950);
  color: #fff;
  padding: 0.45rem 0.7rem;
  font-size: 0.9rem;
  font-weight: 800;
}

.release-entry {
  margin-top: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-blue);
  padding: 1rem;
}

.release-date {
  display: inline-flex;
  margin-bottom: 0.45rem;
  border-radius: 999px;
  background: var(--cyan-soft);
  color: var(--cyan-dark);
  padding: 0.2rem 0.55rem;
  font-size: 0.82rem;
  font-weight: 900;
}

.no-results {
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  padding: 1.4rem;
  text-align: center;
}

@media (max-width: 1100px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topnav {
    flex-wrap: wrap;
  }

  .hero-grid,
  .manual-shell,
  .scope-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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

  .card-grid.three,
  .process-line {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .hero,
  .manual-shell {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .topnav,
  .trial-link {
    display: none;
  }

  .sidebar nav,
  .card-grid.three,
  .doc-card-grid,
  .card-grid.two,
  .settings-list,
  .process-line,
  .glossary {
    grid-template-columns: 1fr;
  }

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

  .dense-list {
    columns: 1;
  }

  .glossary div {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}