/* SGC: помощь новичку — общий стиль. Сначала телефон, затем шире. */

:root {
  --bg: #f4f6fb;
  --bg-deep: #e8ecf5;
  --surface: #ffffff;
  --surface-2: #f0f3f9;
  --text: #182033;
  --muted: #5a6478;
  --line: #d9dfeb;
  --accent: #b5620d;
  --accent-soft: #fbe9d4;
  --link: #1f5fbf;
  --focus: #1f5fbf;
  --placeholder-bg: #fff8e8;
  --placeholder-line: #e7c77d;
  --shadow: 0 1px 2px rgba(20, 30, 60, .06), 0 4px 16px rgba(20, 30, 60, .06);
  --radius: 14px;
  --wrap: 68rem;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1020;
    --bg-deep: #070b17;
    --surface: #131a2e;
    --surface-2: #19223a;
    --text: #e6eaf4;
    --muted: #9aa5bd;
    --line: #26304a;
    --accent: #f0a24a;
    --accent-soft: #2e2416;
    --link: #8db8ff;
    --focus: #8db8ff;
    --placeholder-bg: #1d1a12;
    --placeholder-line: #6b5523;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0b1020;
  --bg-deep: #070b17;
  --surface: #131a2e;
  --surface-2: #19223a;
  --text: #e6eaf4;
  --muted: #9aa5bd;
  --line: #26304a;
  --accent: #f0a24a;
  --accent-soft: #2e2416;
  --link: #8db8ff;
  --focus: #8db8ff;
  --placeholder-bg: #1d1a12;
  --placeholder-line: #6b5523;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
}

a { color: var(--link); text-underline-offset: .15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.25rem, 3.5vw, 1.6rem); margin-top: 1.6em; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--surface); padding: .5rem 1rem; z-index: 10;
}
.skip:focus { left: 16px; top: 8px; }

/* ---------- шапка ---------- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5;
}
.site-header .bar {
  display: flex; align-items: center; gap: 12px;
  min-height: 56px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none; font-weight: 700;
  margin-right: auto; min-width: 0;
}
.brand img { width: 30px; height: 30px; flex: none; }
.brand span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand small { display: none; color: var(--muted); font-weight: 400; }

.theme-toggle {
  flex: none;
  width: 40px; height: 40px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface-2); color: var(--text);
  cursor: pointer; font-size: 1.1rem;
}
.theme-toggle:hover { border-color: var(--accent); }
.theme-toggle .ico-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .ico-sun { display: inline; }
:root[data-theme="dark"] .theme-toggle .ico-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .ico-sun { display: inline; }
  :root:not([data-theme="light"]) .theme-toggle .ico-moon { display: none; }
}

.site-header .bar { flex-wrap: wrap; column-gap: 12px; row-gap: 0; }
.site-nav {
  order: 3; flex: 1 0 100%;
  margin: 0 -16px; padding: 0 16px;
  border-top: 1px solid var(--line);
  min-width: 0;
}
.site-nav ul {
  list-style: none; margin: 0; padding: 8px 0;
  display: flex; gap: 6px;
  overflow-x: auto; scrollbar-width: none;
}
.site-nav ul::-webkit-scrollbar { display: none; }
.site-nav a {
  display: block; white-space: nowrap;
  padding: 6px 12px; border-radius: 999px;
  color: var(--muted); text-decoration: none; font-size: .95rem;
}
.site-nav a:hover { color: var(--text); background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.site-nav .soon {
  font-size: .7rem; text-transform: uppercase; letter-spacing: .04em;
  margin-left: 4px; color: var(--accent);
}

/* ---------- основное ---------- */
main { flex: 1; padding: 24px 0 48px; }

.hero {
  background:
    radial-gradient(1px 1px at 12% 30%, rgba(255,255,255,.7), transparent 60%),
    radial-gradient(1px 1px at 78% 22%, rgba(255,255,255,.6), transparent 60%),
    radial-gradient(1.5px 1.5px at 62% 72%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(1px 1px at 32% 82%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(1px 1px at 90% 60%, rgba(255,255,255,.6), transparent 60%),
    radial-gradient(120% 140% at 85% 0%, #2a3a7a 0%, #141b3a 45%, #0a0f22 100%);
  color: #eef1fa;
  border-radius: var(--radius);
  padding: 28px 20px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}
.hero h1 { color: #fff; }
.hero p { color: #c9d1e6; max-width: 40rem; }
.hero .kicker {
  display: inline-block; margin-bottom: 10px;
  font-size: .8rem; letter-spacing: .06em; text-transform: uppercase;
  color: #f6c27f;
}
.btn {
  display: inline-block;
  padding: 10px 18px; border-radius: 10px;
  background: #f0a24a; color: #1b1205;
  font-weight: 600; text-decoration: none;
}
.btn:hover { background: #f6b665; }

.cards {
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
  padding: 0; margin: 0; list-style: none;
}
.card {
  display: flex; flex-direction: column; gap: 6px;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--text); text-decoration: none;
  box-shadow: var(--shadow);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .ico { font-size: 1.6rem; line-height: 1; }
.card h3 { margin: 4px 0 0; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card .tag {
  align-self: flex-start; margin-top: auto;
  font-size: .75rem; padding: 2px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
}
.card.muted { border-style: dashed; box-shadow: none; }

.page-head { margin-bottom: 20px; }
.crumbs { font-size: .9rem; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 44rem; }

.prose { max-width: 44rem; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: .3em; }

.placeholder {
  max-width: 44rem;
  background: var(--placeholder-bg);
  border: 1px dashed var(--placeholder-line);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.placeholder strong { display: block; margin-bottom: 4px; }
.placeholder p:last-child { margin-bottom: 0; }

.pager {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  margin-top: 36px; max-width: 44rem;
}
.pager a {
  flex: 1 1 12rem;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); text-decoration: none; color: var(--text);
}
.pager a:hover { border-color: var(--accent); }
.pager small { display: block; color: var(--muted); }
.pager .next { text-align: right; }

/* ---------- подвал ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
  color: var(--muted);
  font-size: .875rem;
  padding: 20px 0 28px;
}
.site-footer p { margin: 0 0 .4em; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 10px; }
.site-footer a { color: var(--muted); }

/* ---------- шире телефона ---------- */
@media (min-width: 40rem) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 40px 36px; }
  .brand small { display: inline; }
}

@media (min-width: 60rem) {
  .site-header .bar { min-height: 64px; flex-wrap: nowrap; }
  .brand { margin-right: 0; }
  .site-nav { order: 0; flex: 1 1 auto; margin: 0; padding: 0; border-top: 0; }
  .site-nav ul { justify-content: flex-end; }
  .cards { grid-template-columns: repeat(3, 1fr); }
  .hero { padding: 56px 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
  .card:hover { transform: none; }
}