:root {
  --bg: #ffffff;
  --soft: #f4f6f5;
  --surface: #ffffff;
  --ink: #111816;
  --muted: #5b6661;
  --line: #e2e7e4;
  --green: #1f7a4d;
  --green-dark: #165c3a;
  --green-soft: #e9f2ed;
  --term-bg: #0f1714;
  --term-ink: #d6e2db;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1311;
    --soft: #141b18;
    --surface: #141b18;
    --ink: #e7ece9;
    --muted: #9aa7a0;
    --line: #26302b;
    --green: #3fa872;
    --green-dark: #5cc08c;
    --green-soft: #17271f;
    --term-bg: #0a0f0d;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green-dark); }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* шапка */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.logo img { width: 28px; height: 28px; }
.nav { display: flex; gap: 24px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current] { color: var(--ink); }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; background: var(--green); color: #fff; font-weight: 600; text-decoration: none; border: 1px solid var(--green); cursor: pointer; font-size: 15px; }
.btn:hover { background: var(--green-dark); border-color: var(--green-dark); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); }
.menu-toggle { display: none; }

/* первый экран */
.hero { padding: 80px 0 64px; border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.badge { display: inline-block; padding: 4px 12px; border: 1px solid var(--line); border-radius: 99px; font-size: 13px; color: var(--muted); margin-bottom: 20px; }
.badge b { color: var(--green-dark); font-weight: 600; }
h1 { font-size: 46px; line-height: 1.1; letter-spacing: -.025em; font-weight: 700; margin: 0 0 18px; }
h2 { font-size: 30px; line-height: 1.2; letter-spacing: -.015em; font-weight: 700; margin: 0 0 12px; }
h3 { font-size: 17px; margin: 0 0 6px; }
.lead { font-size: 18px; color: var(--muted); max-width: 36em; margin: 0 0 28px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* карточка сервера в первом экране */
.term { background: var(--term-bg); color: var(--term-ink); border-radius: var(--radius); font: 14px/1.7 var(--mono); overflow: hidden; border: 1px solid #1d2a24; }
.term-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid #1d2a24; }
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3a32; }
.term-body { padding: 16px 18px; }
.term .p { color: #5cc08c; }
.term .c { color: #7d8f86; }
.term .ok { color: #5cc08c; }

/* секции */
section { padding: 64px 0; }
section.alt { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 42em; margin-bottom: 28px; }
.section-head p { color: var(--muted); margin: 0; }
.grid { display: grid; gap: 16px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p { color: var(--muted); margin: 0; font-size: 15px; }
.label { display: block; font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--green-dark); margin-bottom: 12px; }
.steps { counter-reset: step; }
.steps .card::before { counter-increment: step; content: "0" counter(step); display: block; font: 600 13px/1 var(--mono); color: var(--green-dark); margin-bottom: 12px; }

/* тарифы */
.plans { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.plan { position: relative; display: flex; flex-direction: column; gap: 4px; }
.plan.popular { border-color: var(--green); box-shadow: inset 0 0 0 1px var(--green); }
.plan .tag { position: absolute; top: -10px; left: 18px; background: var(--green); color: #fff; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 4px; letter-spacing: .02em; }
.plan .name { font-weight: 700; font-size: 18px; }
.plan .ru { color: var(--muted); font-size: 13px; font-family: var(--mono); }
.plan .price { font-size: 26px; font-weight: 700; margin: 10px 0 2px; font-variant-numeric: tabular-nums; }
.plan .price small { font-size: 14px; font-weight: 500; color: var(--muted); }
.plan ul { list-style: none; padding: 0; margin: 6px 0 10px; font-size: 14px; }
.plan li { padding: 5px 0; border-bottom: 1px solid var(--line); }
.plan .note { font-size: 13px; color: var(--muted); flex: 1; margin-bottom: 10px; }
.plan .btn { text-align: center; }

/* калькулятор */
.calc { display: grid; grid-template-columns: 1.3fr .7fr; gap: 20px; align-items: start; }
.field { margin-bottom: 22px; }
.field label { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 8px; font-size: 15px; }
.field output { color: var(--green-dark); font-family: var(--mono); }
.field input[type=range] { width: 100%; accent-color: var(--green); }
.field .hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
.periods { display: flex; gap: 8px; flex-wrap: wrap; }
.periods label { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; cursor: pointer; font-size: 14px; }
.periods input { margin-right: 6px; accent-color: var(--green); }
.total { position: sticky; top: 84px; }
.total .sum { font-size: 38px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.total dl { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; font-size: 14px; color: var(--muted); margin: 14px 0 18px; }
.total dd { margin: 0; text-align: right; color: var(--ink); font-family: var(--mono); }

/* вопросы */
details { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 8px; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

/* текстовые страницы */
.prose { max-width: 780px; }
.prose p, .prose li { color: var(--muted); }
.prose h2 { margin-top: 36px; font-size: 24px; }
.notice { background: var(--soft); border: 1px solid var(--line); border-left: 3px solid var(--green); border-radius: 6px; padding: 12px 16px; margin: 20px 0; font-size: 15px; }

/* юридические документы */
.legal p { color: var(--ink); }
.legal h2 { font-size: 20px; }
.legal table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 12px 0; }
.legal th, .legal td { text-align: left; vertical-align: top; padding: 10px; border-bottom: 1px solid var(--line); }
.legal th { color: var(--muted); font-weight: 600; }
a.card.doc { text-decoration: none; color: var(--ink); }
a.card.doc:hover { border-color: var(--green); }

/* подвал */
footer { border-top: 1px solid var(--line); padding: 40px 0 48px; font-size: 14px; color: var(--muted); background: var(--soft); }
footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
footer h4 { color: var(--ink); margin: 0 0 10px; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
footer a { color: var(--muted); text-decoration: none; display: block; padding: 2px 0; }
footer a:hover { color: var(--ink); }

/* адаптив */
@media (max-width: 960px) {
  .plans { grid-template-columns: repeat(2, 1fr); }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .calc, .hero .wrap { grid-template-columns: 1fr; }
  .total { position: static; }
}
@media (max-width: 720px) {
  h1 { font-size: 34px; }
  h2 { font-size: 24px; }
  .hero { padding: 48px 0; }
  .g3, .g4, .plans, footer .wrap { grid-template-columns: 1fr; }
  .menu-toggle { display: block; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; color: var(--ink); font-size: 18px; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--line); padding: 16px 20px; }
  .nav.open { display: flex; }
  .top .btn { display: none; }
}