:root {
  --bg: #f4f7f6;
  --card: #fff;
  --text: #1a2b2e;
  --muted: #5f7174;
  --primary: #124b52;
  --primary-2: #1f6d77;
  --line: #dde7e5;
  --accent: #eef6f5;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary-2); }

.topbar {
  background: var(--primary);
  color: #fff;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.topbar strong { font-size: 18px; }
.topbar nav { display: flex; gap: 10px; flex-wrap: wrap; }
.topbar nav a {
  color: #fff;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  font-size: 14px;
}
.topbar nav a.active,
.topbar nav a:hover { background: rgba(255,255,255,.24); }

.wrap { max-width: 920px; margin: 0 auto; padding: 28px 20px 60px; }

.hero {
  background: linear-gradient(135deg, #124b52, #1f6d77);
  color: #fff;
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 24px;
}
.hero h1 { margin: 0 0 8px; font-size: 32px; }
.hero p {
  margin: 0;
  opacity: .92;
  max-width: 640px;
}
.hero code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: #fff;
  font-size: inherit;
  white-space: nowrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.role-block {
  margin-top: 20px;
}

.role-block:first-of-type {
  margin-top: 4px;
}

.role-title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.guide-card {
  display: block;
  background: var(--accent);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.guide-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(18, 75, 82, 0.1);
  border-color: var(--primary-2);
}

.guide-card strong {
  display: block;
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 10px;
}

.guide-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-2);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 10px;
}

.guide-card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

.guide-card li + li {
  margin-top: 4px;
}

.section-compact {
  padding: 20px 24px;
}

.compact-table {
  margin: 0 0 12px;
}

.compact-note {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  transition: transform .15s, box-shadow .15s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(18,75,82,.12);
}
.card h2 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

.section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
}

.section h2 {
  margin: 0 0 6px;
  font-size: 22px;
  color: var(--primary);
}

.section .lead {
  margin: 0 0 18px;
  color: var(--muted);
}

.section h3 {
  margin: 22px 0 10px;
  font-size: 17px;
}

figure {
  margin: 18px 0;
  background: var(--accent);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
}

figure img {
  display: block;
  width: 100%;
  height: auto;
}

figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
}

.step {
  margin: 22px 0 28px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.step-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.step-num {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.step-head p {
  margin: 4px 0 0;
}

.step figure {
  margin: 0;
}

.step figure img {
  border: 1px solid var(--line);
}

ol.steps { padding-left: 22px; }
ol.steps li { margin-bottom: 10px; }
ol.steps li strong { color: var(--primary); }

.tip, .warn {
  border-radius: 12px;
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 14px;
}
.tip { background: #eef6ff; border: 1px solid #c9dff5; }
.warn { background: #fff8e8; border: 1px solid #ecd99a; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0;
}
th, td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}
th { background: var(--accent); }

code {
  background: #eef2f1;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 13px;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 40px;
}

/* --- Install guide (PWA / push) --- */
.install-guide {
  padding: 0;
  overflow: hidden;
}

.install-guide-inner {
  padding: 28px 24px 8px;
}

.install-guide-hero {
  text-align: center;
  margin-bottom: 28px;
}

.install-guide-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 28px rgba(18, 75, 82, 0.22);
}

.install-guide-icon svg {
  width: 36px;
  height: 36px;
  fill: #fff;
}

.install-guide-hero h2 {
  margin: 0 0 8px;
  font-size: 24px;
  color: var(--primary);
}

.install-guide-hero p {
  margin: 0 auto;
  max-width: 520px;
  color: var(--muted);
  font-size: 15px;
}

.install-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.install-tab {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: default;
  opacity: 0.45;
}

.install-tab.active {
  opacity: 1;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.install-step {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 24px;
  border-top: 1px solid var(--line);
}

.install-step-icon {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--accent);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
}

.install-step-icon svg {
  width: 26px;
  height: 26px;
  fill: var(--primary);
}

.install-step-icon.app-icon {
  background: linear-gradient(135deg, #124b52, #1f6d77);
  border: none;
  color: #fff;
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.02em;
  line-height: 1.15;
  text-align: center;
  padding: 4px;
}

.install-step p {
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
}

.install-step strong {
  color: var(--primary);
}

.install-panel { display: none; }
.install-panel.active { display: block; }

.install-footer {
  padding: 16px 24px 24px;
  border-top: 1px solid var(--line);
  background: var(--accent);
}

.install-footer p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  background: #fff;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--primary);
}

.feature-card p {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.feature-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  transition: background 0.15s, border-color 0.15s;
}

.feature-link:hover {
  background: var(--primary-2);
  border-color: var(--primary-2);
  color: #fff;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 26px; }
  .hero p { overflow-x: auto; }
  .wrap { padding: 20px 14px 40px; }
  .install-step { padding: 16px 18px; gap: 14px; }
  .install-step p { font-size: 15px; }
  .guide-grid { grid-template-columns: 1fr; }
}