:root {
  --primary: #1a5fa8;
  --primary-dk: #0e3d6e;
  --primary-lt: #e8f0fb;
  --accent: #d97706;
  --accent-lt: #fff5e8;
  --green: #1a7a4a;
  --green-lt: #e6f4ec;
  --red: #c0392b;
  --red-lt: #fdecea;
  --gray-dk: #1e2a35;
  --gray-md: #4a5568;
  --gray-lt: #f6f8fa;
  --border: #dde3ea;
  --shadow: 0 2px 12px rgba(14,61,110,0.06);
  --shadow-lg: 0 8px 30px rgba(14,61,110,0.1);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.2s cubic-bezier(0.4,0,0.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter","BIZ UDPGothic","Yu Gothic","Meiryo",sans-serif;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-dk);
  background: #f0f3f8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== SITE HEADER ===== */
.site-header {
  background: linear-gradient(135deg, var(--primary-dk) 0%, var(--primary) 55%, #2a7fd4 100%);
  color: #fff;
  padding: 4px 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
}
.site-header .logo {
  grid-column: 1;
  grid-row: 1;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
  color: #fff;
}
.site-header .logo span { opacity: 0.7; font-weight: 400; font-size: 11px; margin-left: 8px; }
.site-nav {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  padding: 2px 0 4px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.site-nav a {
  color: rgba(255,255,255,0.78);
  text-decoration: none;
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 14px;
  transition: 0.15s;
  white-space: nowrap;
}
.site-nav a:hover, .site-nav a.active {
  background: rgba(255,255,255,0.18);
  color: #fff;
}

/* ===== HEADER SEARCH ===== */
.header-search {
  grid-column: 3;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  justify-self: end;
}
.header-search input {
  width: 160px;
  padding: 5px 12px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px 0 0 20px;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 12px;
  font-family: inherit;
  transition: 0.2s;
  outline: none;
}
.header-search input::placeholder { color: rgba(255,255,255,0.5); }
.header-search input:focus {
  width: 220px;
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
}
.header-search button {
  padding: 5px 12px;
  border: 1px solid rgba(255,255,255,0.3);
  border-left: none;
  border-radius: 0 20px 20px 0;
  background: rgba(255,255,255,0.18);
  color: #fff;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  transition: 0.15s;
}
.header-search button:hover { background: rgba(255,255,255,0.3); }

/* ===== PAGE WRAPPER ===== */
.page {
  max-width: 1320px;
  margin: 0 auto;
  padding: 28px 20px 72px;
}

/* ===== PAGE HERO ===== */
.hero {
  background: linear-gradient(135deg, var(--primary-dk) 0%, var(--primary) 50%, #2a7fd4 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  left: -40px; top: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent 70%);
}
.hero::after {
  content: "";
  position: absolute;
  right: -60px; bottom: -60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 70%);
}
.hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 12px;
}
.hero h1 { font-size: clamp(22px,3.5vw,34px); line-height: 1.3; margin-bottom: 10px; }
.hero p { color: rgba(255,255,255,0.88); max-width: 820px; font-size: 14px; }
.hero-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.hero-chip {
  background: rgba(255,255,255,0.13);
  border: 1px solid rgba(255,255,255,0.26);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
}

/* ===== LAYOUT ===== */
.layout { display: grid; grid-template-columns: 240px minmax(0,1fr); gap: 22px; }

/* ===== SIDEBAR ===== */
.sidebar {
  position: sticky;
  top: 72px;
  align-self: start;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 14px;
  box-shadow: var(--shadow);
}
.sidebar-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 6px;
  margin-bottom: 10px;
}
.toc { list-style: none; }
.toc li + li { margin-top: 2px; }
.toc a {
  display: block;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--gray-md);
  text-decoration: none;
  font-size: 13px;
  transition: 0.15s;
}
.toc a:hover { background: var(--primary-lt); color: var(--primary); }
.toc .toc-sub a { padding-left: 22px; font-size: 12px; }

/* ===== CARD ===== */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); }
.card:last-child { margin-bottom: 0; }
.card-title {
  font-size: 18px;
  color: var(--primary);
  border-left: 4px solid var(--primary);
  padding-left: 12px;
  margin-bottom: 16px;
  scroll-margin-top: 80px;
  letter-spacing: 0.02em;
}
.card-sub {
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-dk);
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
  margin: 20px 0 10px;
  scroll-margin-top: 80px;
}

/* ===== CALLOUTS ===== */
.callout {
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 12px 16px;
  margin: 12px 0;
  font-size: 13px;
  line-height: 1.7;
}
.callout-info  { background: var(--primary-lt); border-left: 4px solid var(--primary); color: #1a3a60; }
.callout-warn  { background: var(--accent-lt);  border-left: 4px solid var(--accent);  color: #6c3a00; }
.callout-ok    { background: var(--green-lt);   border-left: 4px solid var(--green);   color: #0e3d22; }
.callout strong { font-weight: 700; }

/* ===== TABLE ===== */
.tbl-wrap { overflow-x: auto; margin: 12px 0; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: var(--primary);
  color: #fff;
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; color: var(--gray-md); }
tbody tr:nth-child(even) { background: var(--gray-lt); }
tbody tr:hover { background: var(--primary-lt); }
tbody tr:last-child td { border-bottom: none; }
td strong { color: var(--gray-dk); }

/* ===== LISTS ===== */
ul.doc-list, ol.doc-list { margin: 8px 0 12px 20px; color: var(--gray-md); }
ul.doc-list li, ol.doc-list li { margin-bottom: 4px; }
ul.check-list { list-style: none; margin: 8px 0 12px; }
ul.check-list li { padding: 5px 0 5px 26px; position: relative; color: var(--gray-md); border-bottom: 1px dotted var(--border); font-size: 13px; }
ul.check-list li:last-child { border-bottom: none; }
ul.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
ol.steps { list-style: none; counter-reset: step; margin: 8px 0 12px; }
ol.steps li {
  counter-increment: step;
  padding: 8px 12px 8px 44px;
  position: relative;
  margin-bottom: 6px;
  background: var(--gray-lt);
  border-radius: var(--radius);
  color: var(--gray-md);
  font-size: 13px;
}
ol.steps li::before {
  content: counter(step);
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  width: 24px; height: 24px;
  background: var(--primary); color: #fff;
  border-radius: 50%; font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* ===== GRID CARDS ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin: 12px 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; margin: 12px 0; }
.grid-4 { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin: 12px 0; }
.mini-card {
  background: var(--gray-lt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.mini-card .mc-label { font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--primary); margin-bottom: 6px; }
.mini-card .mc-value { font-size: 13px; color: var(--gray-dk); line-height: 1.6; }
.mini-card.accent { background: var(--accent-lt); border-color: #f0c070; }
.mini-card.accent .mc-label { color: var(--accent); }
.mini-card.green { background: var(--green-lt); border-color: #a0d8b8; }
.mini-card.green .mc-label { color: var(--green); }

/* ===== BADGE ===== */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}
.badge-blue   { background: var(--primary-lt); color: var(--primary); border: 1px solid #b0ccee; }
.badge-green  { background: var(--green-lt);   color: var(--green);   border: 1px solid #a0d8b8; }
.badge-amber  { background: var(--accent-lt);  color: var(--accent);  border: 1px solid #f0c070; }
.badge-gray   { background: #f0f2f5; color: var(--gray-md); border: 1px solid var(--border); }

/* ===== LANG TABS ===== */
.lang-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.lang-tab {
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #f0f2f5;
  color: var(--gray-md);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.15s;
  font-family: inherit;
}
.lang-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.lang-tab:hover:not(.active) { background: #dde3ea; }
.lang-panel { display: none; }
.lang-panel.active { display: block; }

/* ===== PROMPT BLOCK ===== */
.prompt-block {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 10px 0 18px;
  background: #fafbfe;
  overflow: hidden;
  transition: border-color var(--transition);
}
.prompt-block:hover { border-color: var(--primary); }
.prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #eef2f7;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}
.prompt-header .prompt-title { font-size: 13px; font-weight: 700; color: var(--primary); }
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.15s;
  white-space: nowrap;
  font-family: inherit;
}
.copy-btn:hover { background: var(--primary-dk); }
.copy-btn.copied { background: var(--green); }
.prompt-body {
  padding: 14px 16px;
  font-family: "Consolas","Courier New",monospace;
  font-size: 12.5px;
  line-height: 1.7;
  color: #2d3748;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 420px;
  overflow-y: auto;
}
.prompt-desc { font-size: 13px; color: var(--gray-md); margin-bottom: 8px; }
.prompt-section-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: #e8f0fb;
  padding: 4px 12px;
  border-top: 1px solid var(--border);
}

/* ===== FLOW STEPS ===== */
.flow { display: grid; gap: 10px; margin: 12px 0; }
.flow-step {
  display: grid;
  grid-template-columns: 60px minmax(0,1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}
.flow-no {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-dk), var(--primary));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow-step h3 { font-size: 15px; margin-bottom: 4px; }
.flow-step p  { font-size: 13px; color: var(--gray-md); margin: 0; }

/* ===== MD STRUCTURE ===== */
.md-tree {
  background: #1e2a3a;
  color: #a8d8f0;
  border-radius: var(--radius);
  padding: 16px 20px;
  font-family: "Consolas","Courier New",monospace;
  font-size: 13px;
  line-height: 1.8;
  white-space: pre;
  overflow-x: auto;
  margin: 10px 0;
}
.md-tree .dir  { color: #7ec8e3; font-weight: 700; }
.md-tree .file { color: #a8d8f0; }
.md-tree .note { color: #6a8fa8; font-style: italic; }

/* ===== HR ===== */
hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ===== SITE FOOTER ===== */
.site-footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 12px;
  color: var(--gray-md);
  border-top: 1px solid var(--border);
  margin-top: 40px;
  background: var(--gray-lt);
}
.site-footer a { color: var(--primary); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* ===== TOOL ICONS ===== */
.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.tool-icon.copilot { background: linear-gradient(135deg, #1a1a2e, #4a4a8a); }
.tool-icon.claude { background: linear-gradient(135deg, #d4764e, #e8956a); }
.tool-icon.amazonq { background: linear-gradient(135deg, #232f3e, #ff9900); }

/* ===== SECTION DIVIDER ===== */
.section-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 32px 0 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-md);
}
.section-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ===== COLLAPSIBLE ===== */
.collapsible-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: 12px 0;
  user-select: none;
}
.collapsible-header::after {
  content: "+";
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  transition: transform var(--transition);
}
.collapsible-header.open::after {
  content: "-";
}
.collapsible-body {
  display: none;
  padding-top: 8px;
}
.collapsible-body.open { display: block; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 720px) {
  .page { padding: 16px 12px 48px; }
  .hero { padding: 22px 18px; border-radius: 14px; }
  .card { padding: 18px 16px; border-radius: var(--radius); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .flow-step { grid-template-columns: 1fr; }
  .site-header { padding: 0 14px; }
  .header-search { display: none; }
}