/* Лендинг BeatSaver Helper Quest — https://bsh.lex1133srv.ru
   Внешних ресурсов нет вообще: шрифты системные, картинки локальные. */

:root {
  --bg: #0a0d12;
  --bg-soft: #0f141b;
  --card: #131a23;
  --card-2: #182130;
  --line: #23303f;
  --text: #e8eef7;
  --muted: #93a3b8;
  --blue: #4dc3ff;
  --red: #ff4d6d;
  --radius: 14px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, .sha code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;
  font-size: 0.9em;
}

code {
  background: #0c1117;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 5px;
  word-break: break-word;
}

pre {
  background: #0c1117;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  overflow-x: auto;
  /* Длинные строки (команда с именем файла, вывод sha256) переносим, а не
     прячем за горизонтальной прокруткой: в узких карточках она незаметна. */
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

pre code { background: none; border: 0; padding: 0; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.muted { color: var(--muted); }

/* ---------- шапка ---------- */

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 13, 18, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.top-in {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 62px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.2px;
}

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

.top-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  font-size: 15px;
}

.top-nav a { color: var(--muted); }
.top-nav a:hover { color: var(--text); text-decoration: none; }

/* ---------- кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card-2);
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-big {
  padding: 16px 28px;
  border: 0;
  background: linear-gradient(120deg, var(--red), #b44dff 48%, var(--blue));
  color: #fff;
  box-shadow: 0 10px 30px -12px rgba(77, 195, 255, 0.8),
              0 6px 22px -14px rgba(255, 77, 109, 0.9);
}

.btn-big:hover { box-shadow: 0 14px 36px -10px rgba(77, 195, 255, 0.9); }

.btn-txt { display: flex; flex-direction: column; text-align: left; }
.btn-txt strong { font-size: 17px; }
.btn-txt small { font-weight: 500; opacity: 0.85; font-size: 12.5px; }

.btn-ico { font-size: 22px; line-height: 1; }

.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--card-2); }

.btn-small { padding: 9px 16px; font-size: 14px; }

.btn-tiny {
  padding: 5px 10px;
  font-size: 12.5px;
  font-weight: 500;
  border-radius: 8px;
}

/* ---------- первый экран ---------- */

.hero {
  padding: 56px 0 40px;
  background:
    radial-gradient(900px 380px at 12% -10%, rgba(77, 195, 255, 0.16), transparent 70%),
    radial-gradient(700px 340px at 92% 0%, rgba(255, 77, 109, 0.14), transparent 70%);
}

.hero-in { display: block; }

.hero-text { max-width: 880px; }

.hero-icon { border-radius: 20px; margin-bottom: 18px; }

h1 {
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.1;
  margin: 0 0 14px;
  letter-spacing: -0.5px;
}

.lead {
  font-size: 18px;
  color: #c6d3e4;
  margin: 0 0 26px;
  max-width: 44em;
}

.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 22px 0 0;
}

.tags li {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  background: rgba(19, 26, 35, 0.7);
}

.meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 6px 26px;
  margin: 26px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.meta div { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.meta dt { color: var(--muted); font-size: 13.5px; min-width: 78px; }
.meta dd { margin: 0; font-size: 14.5px; }

.sha {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
  font-size: 13px;
}

.sha-label {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 11px;
}

.sha code { font-size: 12.5px; padding: 6px 9px; }

/* ---------- секции ---------- */

section { padding: 44px 0; }

.band { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  margin: 0 0 26px;
  letter-spacing: -0.3px;
}

h3 { font-size: 16.5px; margin: 0 0 8px; }

.cols3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px 20px;
}

.card p { margin: 0; color: #b9c7d9; font-size: 14.5px; }

/* ---------- скриншоты ---------- */

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}

.shots figure { margin: 0; }

.shots img {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #000;
}

.shots figcaption {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}

/* ---------- установка ---------- */

.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.steps > li {
  position: relative;
  counter-increment: step;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px 20px 18px 56px;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #06121b;
  background: linear-gradient(120deg, var(--blue), #8ce0ff);
}

.steps p { margin: 0 0 10px; color: #b9c7d9; font-size: 14.5px; }
.steps p:last-child { margin-bottom: 0; }
.steps pre { font-size: 12.5px; margin: 0 0 10px; }

.notice {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px 20px;
}

.notice p { margin: 0 0 10px; color: #b9c7d9; font-size: 14.5px; }
.notice p:last-child { margin-bottom: 0; }

/* ---------- вопросы ---------- */

.faq { display: grid; gap: 10px; max-width: 900px; }

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 14px 18px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}

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

.faq summary::before {
  content: "+";
  color: var(--blue);
  font-weight: 700;
  margin-right: 10px;
}

.faq details[open] summary::before { content: "–"; }

.faq p { margin: 10px 0 0; color: #b9c7d9; font-size: 14.5px; }

/* ---------- подвал ---------- */

.foot {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  background: #080b10;
}

.foot-in p { margin: 0 0 6px; font-size: 14px; }
.foot-in .muted { font-size: 13px; max-width: 70em; }

/* ---------- мобильные ---------- */

@media (max-width: 880px) {
  .top-nav { display: none; }
  .top-in { gap: 12px; }
  .brand span { display: none; }
  .brand { margin-right: auto; }
  .hero { padding: 36px 0 28px; }
  section { padding: 34px 0; }
}

@media (max-width: 480px) {
  .btn-big { width: 100%; }
  .cta .btn-ghost { width: 100%; }
}