@font-face { font-family: Manrope; font-weight: 200 800; font-display: swap; src: url(manrope-cyrillic-wght-normal.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: Manrope; font-weight: 200 800; font-display: swap; src: url(manrope-latin-wght-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  color-scheme: light;
  --bg: #f6f7fb; --fg: #0b1020; --fg2: #3f495c; --fg3: #6b7489;
  --glass: rgba(255,255,255,.66); --glass-strong: rgba(255,255,255,.9); --line: rgba(15,23,42,.09); --line-strong: rgba(15,23,42,.16);
  --teal: #0d9488; --teal-2: #14b8a6; --violet: #7c3aed; --violet-2: #a78bfa; --link: #0f766e;
  --cta-fg: #ffffff; --cta-a: #0f766e; --cta-b: #0e7490;
  --glow-a: rgba(20,184,166,.30); --glow-b: rgba(139,92,246,.24);
  --grid: rgba(15,23,42,.045);
  --shadow: 0 1px 0 rgba(255,255,255,.7) inset, 0 24px 60px -28px rgba(15,23,42,.25);
  --focus: #0d9488;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #05070d; --fg: #f5f7fb; --fg2: #b4bdcf; --fg3: #7d879c;
    --glass: rgba(255,255,255,.045); --glass-strong: rgba(13,18,30,.9); --line: rgba(255,255,255,.08); --line-strong: rgba(255,255,255,.16);
    --teal: #2dd4bf; --teal-2: #5eead4; --violet: #a78bfa; --violet-2: #c4b5fd; --link: #5eead4;
    --cta-fg: #04201d; --cta-a: #2dd4bf; --cta-b: #67e8f9;
    --glow-a: rgba(20,184,166,.24); --glow-b: rgba(124,58,237,.26);
    --grid: rgba(255,255,255,.03);
    --shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 30px 80px -30px rgba(0,0,0,.8);
    --focus: #5eead4;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
@media (max-width: 640px) { html { scroll-padding-top: 16px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; min-height: 100dvh; background: var(--bg); color: var(--fg); overflow-x: hidden;
  font: 16px/1.65 Manrope, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased;
  display: flex; flex-direction: column;
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 8px; }

.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 45% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 45% at 50% 0%, #000 20%, transparent 75%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(90px); }
.orb.a { width: 40vmax; height: 40vmax; left: -10vmax; top: -24vmax; background: var(--glow-a); }
.orb.b { width: 36vmax; height: 36vmax; right: -12vmax; top: -18vmax; background: var(--glow-b); }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* Шапка */
.top {
  position: sticky; top: 0; z-index: 20; border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--bg) 72%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
.top .wrap { display: flex; align-items: center; gap: 16px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -.02em; color: var(--fg); text-decoration: none; white-space: nowrap; }
.brand img { width: 26px; height: auto; }
.brand small { font-size: 13px; font-weight: 700; color: var(--fg3); padding: 2px 8px; border: 1px solid var(--line-strong); border-radius: 9999px; }
.menu { display: flex; gap: 4px; margin-left: auto; }
.menu a {
  display: inline-flex; align-items: center; height: 38px; padding: 0 14px; border-radius: 9999px; white-space: nowrap;
  color: var(--fg2); font-size: 14px; font-weight: 700; text-decoration: none;
}
.menu a:hover { color: var(--fg); background: var(--line); }
.menu a[aria-current="page"] { color: var(--fg); background: var(--glass); border: 1px solid var(--line); }
.menu a.cta { color: var(--cta-fg); background: linear-gradient(135deg, var(--cta-a), var(--cta-b)); margin-left: 6px; }
@media (max-width: 640px) {
  .top { position: static; }
  .top .wrap { height: auto; flex-wrap: wrap; padding-top: 12px; padding-bottom: 10px; row-gap: 8px; }
  .menu { margin-left: 0; width: 100%; overflow-x: auto; scrollbar-width: none; }
  .menu { gap: 2px; }
  .menu a { padding: 0 10px; font-size: 13.5px; height: 36px; }
  .top .wrap { position: relative; }
  .menu a.cta { position: absolute; top: 12px; right: 20px; padding: 0 16px; }
}

/* Первый экран */
.hero { padding: 64px 0 24px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 9999px;
  background: var(--glass); border: 1px solid var(--line); font-size: 13px; font-weight: 700; color: var(--fg2);
}
.hero h1 { margin: 18px 0 0; font-size: clamp(29px, 7.6vw, 64px); hyphens: auto; overflow-wrap: break-word; line-height: 1.04; letter-spacing: -.045em; font-weight: 800; max-width: 16em; }
.grad {
  background: linear-gradient(100deg, var(--teal) 0%, var(--teal-2) 35%, var(--violet) 75%, var(--violet-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { margin: 18px 0 0; font-size: clamp(17px, 2.1vw, 20px); color: var(--fg2); max-width: 36em; }
.hero .meta { margin-top: 14px; font-size: 14px; color: var(--fg3); }

/* Раскладка: оглавление + текст */
.layout { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 24px 0 64px; }
@media (min-width: 1040px) { .layout { grid-template-columns: 220px minmax(0, 1fr); gap: 56px; } }
.toc { display: none; }
@media (min-width: 1040px) {
  .toc { display: block; position: sticky; top: 96px; align-self: start; font-size: 14px; }
  .toc p { margin: 0 0 10px; font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--fg3); }
  .toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-strong); }
  .toc a { display: block; padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; color: var(--fg3); font-weight: 600; text-decoration: none; }
  .toc a:hover { color: var(--fg); }
  .toc a.active { color: var(--fg); border-left-color: var(--teal); }
}

/* Текст */
.prose { max-width: 760px; }
.prose section { padding-top: 8px; }
.prose section + section { margin-top: 40px; }
.prose h2 { margin: 0 0 14px; font-size: clamp(24px, 3.4vw, 30px); line-height: 1.2; letter-spacing: -.03em; font-weight: 800; }
.prose h3 { margin: 26px 0 8px; font-size: 18px; letter-spacing: -.015em; }
.prose p, .prose li { color: var(--fg2); }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { margin: 0 0 14px; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--teal); }
.prose strong { color: var(--fg); }

/* Карточки */
.cards { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 18px 0; }
@media (min-width: 640px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .cards.three { grid-template-columns: repeat(3, 1fr); } }
.card {
  padding: 20px; border-radius: 20px; background: var(--glass); border: 1px solid var(--line);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.card .ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; color: var(--teal); background: color-mix(in srgb, var(--teal) 14%, transparent); }
.card:nth-child(2n) .ic { color: var(--violet); background: color-mix(in srgb, var(--violet) 14%, transparent); }
.card .ic svg { width: 20px; height: 20px; }
.card h3 { margin: 14px 0 6px; font-size: 17px; color: var(--fg); }
.card p { margin: 0; font-size: 14.5px; }
.card ul { margin: 8px 0 0; padding-left: 18px; font-size: 14.5px; }

/* Выноска */
.callout {
  position: relative; margin: 22px 0; padding: 24px; border-radius: 24px; overflow: hidden;
  background: var(--glass-strong); border: 1px solid var(--line-strong); box-shadow: var(--shadow);
}
.callout::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: linear-gradient(180deg, var(--teal), var(--violet));
}
.callout h3 { margin: 0 0 8px; color: var(--fg); }
.callout p:last-child { margin-bottom: 0; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 22px; margin-top: 6px; border-radius: 16px;
  color: var(--cta-fg); background: linear-gradient(135deg, var(--cta-a), var(--cta-b)); font-weight: 800; text-decoration: none;
  box-shadow: 0 10px 30px -10px var(--glow-a); transition: transform .2s ease;
}
.btn svg { width: 20px; height: 20px; }
@media (hover: hover) { .btn:hover { transform: translateY(-2px); } }

.table { width: 100%; border-collapse: collapse; margin: 8px 0 18px; font-size: 14.5px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table th { color: var(--fg); font-weight: 800; width: 34%; }
.table td { color: var(--fg2); }
@media (max-width: 560px) {
  .table, .table tbody, .table tr, .table th, .table td { display: block; width: 100%; }
  .table tr { padding: 10px 0; border-bottom: 1px solid var(--line); }
  .table th, .table td { padding: 2px 0; border: 0; }
}

footer { border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; padding-top: 22px; padding-bottom: max(26px, env(safe-area-inset-bottom)); font-size: 13px; color: var(--fg3); }
footer a { color: var(--fg2); font-weight: 700; text-decoration: none; }
footer a:hover { color: var(--fg); }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }