:root {
  --br-blue: #2fc6f6;
  --br-blue-dark: #1a9fd4;
  --br-navy: #1e3a5f;
  --br-text: #333;
  --br-muted: #666;
  --br-bg: #fff;
  --br-section: #f5f8fb;
  --br-border: #e0e8ef;
  --br-radius: 8px;
  --br-shadow: 0 4px 24px rgba(30, 58, 95, 0.08);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  color: var(--br-text);
  background: var(--br-bg);
  line-height: 1.6;
}

a {
  color: var(--br-blue-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--br-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--br-navy);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}

.site-brand:hover {
  text-decoration: none;
}

.site-logo {
  height: 36px;
  width: auto;
}

.site-brand-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  line-height: 1;
}

.site-brand-tagline {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: var(--br-muted, #6b7280);
}

.site-header-right {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.site-nav a {
  color: var(--br-navy);
  font-weight: 500;
}

.site-auth {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  padding-left: 1.25rem;
  border-left: 1px solid var(--br-border);
}

.site-auth a {
  color: var(--br-blue-dark);
  font-weight: 600;
  white-space: nowrap;
}

.site-auth-sep {
  color: var(--br-muted);
  font-weight: 400;
  user-select: none;
}

.site-auth-user {
  color: var(--br-navy);
  font-weight: 500;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-nav-admin {
  color: var(--br-blue-dark) !important;
}

.site-nav-user {
  color: var(--br-navy);
  font-weight: 500;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-main {
  min-height: calc(100vh - 200px);
}

.hero {
  background: linear-gradient(135deg, #e8f7fc 0%, #fff 60%);
  padding: 4rem 0 3.5rem;
  text-align: center;
}

.hero-headline {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--br-navy);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--br-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.section {
  padding: 3rem 0;
}

.section:nth-child(even) {
  background: var(--br-section);
}

.section-title {
  text-align: center;
  font-size: 1.75rem;
  color: var(--br-navy);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 2rem;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--br-navy);
  margin: 2rem 0 1rem;
}

.page-title {
  font-size: 2rem;
  color: var(--br-navy);
  margin: 0 0 0.5rem;
}

.page-lead {
  color: var(--br-muted);
  margin: 0 0 2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--br-border);
  border-radius: var(--br-radius);
  padding: 1.5rem;
  box-shadow: var(--br-shadow);
}

.feature-card h3 {
  margin: 0 0 0.75rem;
  color: var(--br-navy);
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--br-muted);
  font-size: 0.95rem;
}

.section-providers .section-lead {
  max-width: 42rem;
  margin: 0 0 1.5rem;
  color: var(--br-muted);
}

.providers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.provider-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1.5rem;
  background: #fff;
  border: 1px solid var(--br-border);
  border-radius: var(--br-radius);
  box-shadow: var(--br-shadow);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.provider-card:hover {
  border-color: var(--br-accent);
  box-shadow: 0 4px 16px rgba(0, 40, 80, 0.08);
}

.provider-card-logo {
  object-fit: contain;
}

.provider-card-name {
  margin: 0;
  font-size: 1.1rem;
  color: var(--br-navy);
}

.provider-card-desc {
  margin: 0;
  flex: 1;
  font-size: 0.9rem;
  color: var(--br-muted);
}

.provider-card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--br-accent);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--br-radius);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--br-blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--br-blue-dark);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border-color: var(--br-blue);
  color: var(--br-blue-dark);
}

.tools-provider-filter .btn.is-active {
  background: var(--br-blue);
  border-color: var(--br-blue);
  color: #fff;
  font-weight: 600;
}

.section-cta .cta-inner {
  text-align: center;
}

.faq-accordion {
  max-width: 720px;
  margin: 0 auto;
}

.faq-accordion-item {
  border: 1px solid var(--br-border);
  border-radius: var(--br-radius);
  background: #fff;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.faq-accordion-trigger {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem 1.15rem;
  border: none;
  background: transparent;
  text-align: left;
  font: inherit;
  color: var(--br-navy);
  cursor: pointer;
}

.faq-accordion-trigger:hover {
  background: var(--br-section);
}

.faq-accordion-trigger:focus-visible {
  outline: 2px solid var(--br-blue);
  outline-offset: -2px;
}

.faq-accordion-icon {
  flex-shrink: 0;
  width: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--br-blue-dark);
}

.faq-accordion-question {
  flex: 1;
  font-weight: 600;
}

.faq-accordion-panel {
  padding: 0 1.15rem 1rem 2.9rem;
}

.faq-accordion-answer {
  color: var(--br-muted);
}

.faq-accordion-answer p {
  margin: 0 0 0.75rem;
}

.faq-accordion-answer p:last-child {
  margin-bottom: 0;
}

.contacts-grid p {
  margin: 0.5rem 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tool-card {
  display: block;
  position: relative;
  padding: 1.5rem;
  padding-bottom: 2.35rem;
  border: 1px solid var(--br-border);
  border-radius: var(--br-radius);
  background: #fff;
  box-shadow: var(--br-shadow);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

.tool-card:hover {
  border-color: var(--br-blue);
  transform: translateY(-2px);
  text-decoration: none;
}

.tool-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--br-navy);
}

.tool-card p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--br-muted);
}

.tool-card-meta {
  font-size: 0.8rem;
  color: var(--br-blue-dark);
}

.tool-card-provider-badge {
  position: absolute;
  right: 0.75rem;
  bottom: 0.65rem;
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.2;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--br-blue-dark);
  letter-spacing: 0.01em;
  pointer-events: none;
}

.tool-card[data-provider="bitrix24"] .tool-card-provider-badge {
  background: rgba(47, 199, 247, 0.14);
  color: #0b6e9e;
}

.tool-card[data-provider="jira"] .tool-card-provider-badge {
  background: rgba(0, 82, 204, 0.12);
  color: #0052cc;
}

.tools-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.tools-table th,
.tools-table td {
  border: 1px solid var(--br-border);
  padding: 0.6rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.tools-table th {
  background: var(--br-section);
  color: var(--br-navy);
}

.tools-table code {
  font-size: 0.85em;
  background: #f0f4f8;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.muted {
  color: var(--br-muted);
  font-size: 0.85em;
}

.breadcrumb {
  font-size: 0.9rem;
  margin-bottom: 1rem;
  color: var(--br-muted);
}

.prose.md-body h1,
.prose.md-body h2,
.prose.md-body h3 {
  color: var(--br-navy);
}

.prose.md-body pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: var(--br-radius);
  overflow-x: auto;
}

.code-block-wrap {
  position: relative;
  margin: 1rem 0;
}

.code-block-wrap pre {
  margin: 0;
  padding-top: 2.25rem;
}

.code-copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.code-copy-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}

.code-copy-btn:focus-visible {
  outline: 2px solid var(--br-blue);
  outline-offset: 2px;
}

.code-copy-btn--done {
  color: #86efac;
}

.prose.md-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.prose.md-body th,
.prose.md-body td {
  border: 1px solid var(--br-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.prose.md-body th {
  background: var(--br-section);
  color: var(--br-navy);
}

.site-footer {
  background: var(--br-navy);
  color: #c8d6e5;
  padding: 2.5rem 0;
  margin-top: 2rem;
}

.site-footer a {
  color: var(--br-blue);
}

.site-footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.site-footer strong {
  color: #fff;
  font-size: 1.1rem;
}

.site-footer p {
  margin: 0.35rem 0;
  font-size: 0.9rem;
}

.site-footer-brand {
  grid-column: 1 / -1;
  margin-bottom: 0.5rem;
}

.site-footer-brand .site-logo {
  max-height: 36px;
}

.pages-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}

.pages-list li {
  margin-bottom: 0.65rem;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 2rem;
  align-items: start;
}

.guide-toc {
  position: sticky;
  top: 5rem;
  font-size: 0.9rem;
  border-left: 2px solid var(--br-border);
  padding-left: 1rem;
}

.guide-toc-title {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--br-navy);
}

.guide-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.guide-toc-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.guide-toc-tree .guide-toc-tree {
  margin-top: 0.35rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--br-border);
}

.guide-toc-item {
  margin-bottom: 0.35rem;
}

.guide-toc-row {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
}

.guide-toc-toggle {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--br-blue-dark);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.guide-toc-toggle:focus-visible {
  outline: 2px solid var(--br-blue);
  outline-offset: 1px;
}

.guide-toc-link {
  color: var(--br-muted);
  text-decoration: none;
  line-height: 1.35;
}

.guide-toc-link:hover {
  color: var(--br-blue-dark);
}

.guide-toc-leaf {
  display: block;
  padding-left: 1.6rem;
}

.guide-toc-panel.hidden {
  display: none;
}

.guide-body h2,
.guide-body h3,
.guide-body h4 {
  scroll-margin-top: 5rem;
}

.tools-table td {
  vertical-align: top;
}

details.cap-ai-desc {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

details.cap-ai-desc summary {
  cursor: pointer;
  color: var(--muted, #6b7280);
  user-select: none;
}

details.cap-ai-desc p {
  margin: 0.35rem 0 0;
  white-space: pre-wrap;
}

details.cap-tech-id {
  margin-top: 0.25rem;
}

details.cap-tech-id summary {
  cursor: pointer;
  user-select: none;
}

details.prose-operator {
  margin-top: 2rem;
  border-top: 1px solid var(--border, #e5e7eb);
  padding-top: 1rem;
}

details.prose-operator > summary {
  cursor: pointer;
  list-style: none;
  margin-bottom: 1rem;
}

details.prose-operator > summary::-webkit-details-marker {
  display: none;
}

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

  .guide-toc {
    position: static;
    border-left: none;
    padding-left: 0;
    margin-bottom: 1.5rem;
  }
}

@media (max-width: 600px) {
  .site-header-inner {
    flex-wrap: wrap;
    align-items: flex-start;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }
  .site-header-right {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-left: 0;
  }
  .site-nav {
    gap: 0.75rem;
    font-size: 0.9rem;
    flex-wrap: wrap;
  }
  .site-auth {
    padding-left: 0;
    border-left: none;
    font-size: 0.9rem;
  }
  .site-brand-text {
    display: none;
  }
}

.site-narrow {
  max-width: 520px;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.site-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--br-border);
  border-radius: var(--br-radius);
}

.site-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
}

.site-form input {
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--br-border);
  border-radius: 6px;
  font: inherit;
}

.site-error {
  color: #c62828;
  font-size: 0.9rem;
  min-height: 1.2rem;
}

.site-success {
  color: #1b5e20;
  font-size: 0.9rem;
}

.hidden {
  display: none !important;
}