@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #f8f9fa;
  --white: #ffffff;
  --blue: #4a7dff;
  --orange: #d98c45;
  --dark: #161b22;
  --text: #1a1a1a;
  --text-muted: #666666;
  --text-light: #9ca3af;
  --border: #e5e7eb;
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  --radius: 16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: clip;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 32px 32px;
  min-width: 0;
}

/* header */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
}

.logo-img {
  height: 64px;
  width: auto;
  display: block;
}

.back {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
}

.back:hover { text-decoration: underline; }

/* demo page header */
.page-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-bottom: 18px;
}

.demo-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange);
}

h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.03em;
}

.lead {
  font-size: 0.9rem;
  color: var(--text-muted);
  width: 100%;
  margin: 0;
}

/* grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.grid-2 > *,
.grid-3 > * {
  min-width: 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .pick-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .wrap { padding: 16px 20px 24px; }

  .top {
    flex-wrap: wrap;
    gap: 10px;
  }

  .logo-img {
    height: 48px;
  }

  h1 {
    font-size: 1.3rem;
  }

  .index-header h1 {
    font-size: 1.45rem;
  }

  .page-head {
    gap: 4px 10px;
    margin-bottom: 14px;
  }

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

  .runbook-frame {
    height: 55vh;
    min-height: 280px;
  }
}

@media (max-width: 640px) {
  .wrap { padding: 14px 16px 20px; }

  .top {
    margin-bottom: 14px;
    padding-bottom: 12px;
  }

  .back {
    font-size: 0.75rem;
  }

  .grid-2,
  .grid-3,
  .toc {
    grid-template-columns: 1fr;
  }

  .block {
    padding: 14px;
  }

  .block h2 {
    font-size: 0.7rem;
  }

  h1 {
    font-size: 1.15rem;
  }

  .index-header {
    margin-bottom: 18px;
  }

  .index-header h1 {
    font-size: 1.25rem;
  }

  .lead {
    font-size: 0.85rem;
  }

  .toc-item {
    padding: 12px 14px;
  }

  .toc-item h2 {
    font-size: 0.95rem;
  }

  .url-box,
  .url-box.live {
    font-size: 0.75rem;
    padding: 8px 10px;
  }

  .env-box {
    font-size: 0.62rem;
    padding: 10px 12px;
    -webkit-overflow-scrolling: touch;
  }

  .prompt {
    font-size: 0.8125rem;
    padding: 12px;
    line-height: 1.6;
  }

  .doc-table {
    font-size: 0.75rem;
  }

  .doc-table th,
  .doc-table td {
    padding: 6px 8px;
  }

  .accordion summary {
    padding: 14px;
    font-size: 0.75rem;
  }

  .accordion-body {
    padding: 0 14px 14px;
  }

  .cred {
    grid-template-columns: 1fr;
    gap: 2px 0;
  }

  .cred dt {
    margin-top: 8px;
  }

  .cred dt:first-of-type {
    margin-top: 0;
  }

  .block .btn-dl {
    display: block;
    text-align: center;
    margin-left: 0 !important;
  }

  .block .btn-dl + .btn-dl {
    margin-top: 8px;
  }

  footer {
    padding: 14px 12px;
    font-size: 0.7rem;
    line-height: 1.6;
  }
}

@media (max-width: 380px) {
  .wrap {
    padding: 12px;
  }

  .logo-img {
    height: 40px;
  }
}

/* blocks */
.block {
  background: var(--white);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,0.04);
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.grid-2 .block,
.grid-3 .block {
  margin-bottom: 0;
  height: 100%;
}

.block h2 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--orange);
  margin-bottom: 8px;
}

.block p, .block li {
  font-size: 0.875rem;
  color: var(--text);
}

.block ul, .block ol {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.block li { color: var(--text-muted); }

.block code {
  font-family: ui-monospace, monospace;
  font-size: 0.85em;
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-all;
  overflow-wrap: anywhere;
}

/* url / link placeholders */
.url-box {
  background: #f3f4f6;
  border: 1px dashed #c4c9d0;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 0.8125rem;
  font-family: ui-monospace, monospace;
  color: var(--text-light);
  word-break: break-all;
  margin-top: 6px;
}

.url-box a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}

.url-box a:hover { text-decoration: underline; }

/* prompt */
.prompt {
  background: var(--dark);
  color: #d1d5db;
  border-radius: 10px;
  padding: 16px;
  font-size: 0.875rem;
  line-height: 1.7;
  margin-top: 8px;
  border-left: 3px solid var(--orange);
}

/* qr */
.qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px;
  margin-top: 8px;
}

.qr {
  width: 180px;
  height: 180px;
  background: #e5e7eb;
  border: 2px dashed #c4c9d0;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.url-box.live {
  border-style: solid;
  border-color: var(--border);
  color: var(--text);
}

.cred {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 12px;
  margin-top: 8px;
  align-items: baseline;
}
.cred dt {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-light);
  margin-top: 0;
}
.cred dd {
  font-size: 0.8125rem;
  font-family: ui-monospace, monospace;
  word-break: break-all;
  color: var(--text);
  margin: 0;
}
.cred dd a { color: var(--blue); font-weight: 600; text-decoration: none; }
.cred dd a:hover { text-decoration: underline; }

.env-box {
  background: #1e1e1e;
  color: #d4d4d4;
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  padding: 12px 14px;
  border-radius: 8px;
  margin-top: 6px;
  white-space: pre-wrap;
  word-break: break-all;
  overflow-wrap: anywhere;
  line-height: 1.5;
  max-width: 100%;
  overflow-x: auto;
}

.btn-dl {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 16px;
  background: var(--blue);
  color: white;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
}
.btn-dl:hover { background: #3b6de0; }

.runbook-frame {
  width: 100%;
  height: 70vh;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 10px;
  background: var(--white);
}

/* guide / long-form content */
.guide-section { margin-bottom: 12px; }

.guide-section h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.block h4,
.guide-section h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
  margin: 14px 0 6px;
}

.block h4:first-of-type,
.guide-section h4:first-of-type {
  margin-top: 0;
}

.guide-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.guide-list {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.guide-list li {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.pick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 8px;
}

.pick-card {
  background: #f3f4f6;
  border-radius: 8px;
  padding: 12px;
  font-size: 0.8125rem;
}

a.pick-card {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}

a.pick-card:hover {
  background: #e8eaed;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.pick-card strong {
  display: block;
  color: var(--orange);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.warn-box {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.8125rem;
  color: #9a3412;
  margin-top: 8px;
}

.doc-table-wrap {
  overflow-x: auto;
  margin-top: 8px;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.doc-table th,
.doc-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-table th {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-light);
  background: #f9fafb;
}

.doc-table td code {
  font-size: 0.78rem;
}

.doc-table tr:last-child td {
  border-bottom: none;
}

.accordion {
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,0.04);
  margin-bottom: 0;
  min-width: 0;
  max-width: 100%;
}

.accordion summary {
  padding: 16px 18px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  color: var(--orange);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  user-select: none;
}

.accordion summary::-webkit-details-marker { display: none; }

.accordion summary::after {
  content: '+';
  float: right;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-light);
}

.accordion[open] summary::after { content: '−'; }

.accordion-body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--border);
  min-width: 0;
  overflow-x: auto;
}

.accordion-body .guide-section,
.accordion-body .block {
  box-shadow: none;
  border: none;
  padding: 16px 0 0;
  margin-bottom: 0;
  background: transparent;
}

.accordion-body .grid-2 {
  margin-bottom: 0;
}

.ascii-map {
  background: #1e1e1e;
  color: #d4d4d4;
  font-family: ui-monospace, monospace;
  font-size: 0.68rem;
  line-height: 1.45;
  padding: 14px;
  border-radius: 8px;
  overflow-x: auto;
  white-space: pre;
  margin: 8px 0;
}

.guide-ru h2,
.guide-ru h3 {
  color: var(--text);
}

.guide-ru .block-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--orange);
  margin: 18px 0 8px;
}

.guide-ru .block-title:first-child {
  margin-top: 0;
}

.qr-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

/* footer */
footer {
  text-align: center;
  padding: 16px;
  font-size: 0.75rem;
  color: var(--text-light);
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

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

footer a:hover {
  color: var(--blue);
  text-decoration: underline;
}

/* ── index: all materials page ── */

.index-header {
  text-align: center;
  margin-bottom: 24px;
}

.index-header h1 { font-size: 1.75rem; }

.toc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.toc-item {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--white);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 0;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,0.04);
  transition: box-shadow 0.15s;
}

.toc-item:hover {
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
}

.toc-item .tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.toc-item h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 4px 0 2px;
}

.toc-item p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* roadmap inline on index */
.roadmap-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.roadmap-list li {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.roadmap-list li:last-child { border-bottom: none; }

.roadmap-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--orange);
  color: white;
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.roadmap-list strong {
  display: block;
  color: var(--text);
  font-size: 0.9375rem;
}