/* PEFL 2.5 — install guide (Yandex / Chrome) */
:root {
  --accent: #c62828;
  --accent-soft: #ffebee;
  --ink: #263238;
  --muted: #546e7a;
  --card: #fff;
  --line: #e0e6ea;
  --warn-bg: #fff3e0;
  --warn-line: #ffcc80;
  --ok-bg: #e8f5e9;
  --ok-line: #a5d6a7;
  --step: #fc3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font: 16px/1.55 "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--step) 0%, #ffdb4d 28%, #fff 72%);
}

body.theme-chrome {
  --accent: #2e7d32;
  --accent-soft: #e8f5e9;
  --step: #c8e6c9;
  background: linear-gradient(180deg, #e8f5e9 0%, #f1f8e9 40%, #fff 80%);
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.92rem;
}

.topbar a {
  color: var(--accent);
  text-decoration: none;
}

.topbar a:hover { text-decoration: underline; }

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 10px 32px rgba(38, 50, 56, 0.1);
}

h1 {
  margin: 0 0 6px;
  font-size: 1.55rem;
  line-height: 1.25;
}

.lead {
  margin: 0 0 20px;
  color: var(--muted);
}

.meta {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.download-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 0 0 24px;
  padding: 14px 16px;
  background: #f5f7f8;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover { filter: brightness(1.06); }

.btn-secondary {
  background: #455a64;
}

.steps { margin: 0; padding: 0; list-style: none; }

.step {
  margin: 0 0 28px;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
}

.step:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.step-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.step-num {
  flex: 0 0 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 32px;
  text-align: center;
}

.step h2 {
  margin: 2px 0 0;
  font-size: 1.08rem;
  color: var(--accent);
}

.step p {
  margin: 0 0 10px;
}

.step ul {
  margin: 0 0 10px;
  padding-left: 1.25rem;
}

.step li { margin-bottom: 6px; }

.shot {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fafafa;
}

.caption {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.callout {
  margin: 12px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.callout-warn {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
}

.callout-important {
  background: var(--accent-soft);
  border: 1px solid #ef9a9a;
}

.callout-ok {
  background: var(--ok-bg);
  border: 1px solid var(--ok-line);
}

code, kbd {
  background: #f5f7f8;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

footer {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 520px) {
  .card { padding: 20px 16px; }
  h1 { font-size: 1.35rem; }
}