:root {
  --bg: #0a0a0b; --card: #131315; --line: #222225;
  --text: #f3f2ef; --text-2: #d7d6d2; --muted: #8b8a90;
  --field: #1d1d20; --accent: #3ddc97; --on-accent: #06140d; --warn: #f2c66d; --topbar: rgba(10,10,11,.82); --hover-line: #3a3a3f;
  --r: 16px;
  --font: "Inter", "SF Pro Text", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color-scheme: light dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Шапка */
.top { position: sticky; top: 0; z-index: 10; background: var(--topbar); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 16px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; text-decoration: none; letter-spacing: -.01em; }
.brand img { width: 28px; height: 28px; }
.nav { display: flex; gap: 20px; margin-left: auto; font-size: 14px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--text); }
.langs { display: flex; gap: 2px; background: var(--field); border-radius: 999px; padding: 3px; }
.langs button { border: 0; background: none; color: var(--muted); font: 600 12px var(--font); padding: 5px 10px; border-radius: 999px; cursor: pointer; }
.langs button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }

/* Кнопки */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font: 600 15px var(--font); text-decoration: none; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; }
.btn:hover { background: var(--field); }
.btn.primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn svg { width: 18px; height: 18px; }

/* Первый экран */
.hero { padding: 72px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(34px, 6vw, 60px); line-height: 1.05; letter-spacing: -.03em; margin: 0 auto 18px; max-width: 14ch; }
.hero p.lead { color: var(--text-2); font-size: clamp(17px, 2.2vw, 20px); max-width: 40ch; margin: 0 auto 30px; }
.cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.free { color: var(--muted); font-size: 13px; margin-top: 14px; }

/* Секции */
section.block { padding: 72px 0; border-top: 1px solid var(--line); }
h2 { font-size: clamp(26px, 4vw, 38px); letter-spacing: -.02em; margin: 0 0 10px; }
.sub { color: var(--muted); margin: 0 0 36px; max-width: 60ch; }

.feat { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 64px; }
.feat:last-child { margin-bottom: 0; }
.feat:nth-child(even) .pic { order: 2; }
.feat .pic img { border-radius: 12px; border: 1px solid var(--line); }
.feat h3 { font-size: 24px; margin: 0 0 10px; letter-spacing: -.01em; }
.feat p { color: var(--text-2); margin: 0; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; }
.tile b { display: block; margin-bottom: 6px; }
.tile span { color: var(--muted); font-size: 14px; }

.install { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.store { display: flex; align-items: center; gap: 16px; padding: 22px; text-decoration: none; }
.store svg { width: 40px; height: 40px; flex: none; }
.store b { display: block; font-size: 17px; }
.store span { color: var(--muted); font-size: 14px; }
.store:hover { border-color: var(--hover-line); }

/* Донаты */
.donate .tile { display: flex; flex-direction: column; gap: 14px; }
.wallets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.coin { display: flex; align-items: center; gap: 10px; }
.coin i { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 700 12px var(--font); font-style: normal; color: #fff; flex: none; }
.coin b { margin: 0; font-size: 15px; }
.coin small { display: block; color: var(--muted); font-size: 12px; }
.qr { background: #fff; border-radius: 12px; padding: 10px; }
.qr img { width: 100%; height: auto; image-rendering: pixelated; }
.addr { font: 12.5px/1.45 ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace; color: var(--text-2); word-break: break-all; background: var(--field); border-radius: 10px; padding: 9px 10px; user-select: all; }
.copy { width: 100%; justify-content: center; padding: 10px; font-size: 14px; }
.copy.done { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.warn { color: var(--warn); font-size: 13px; margin: 18px 0 0; }
.thanks { color: var(--muted); font-size: 14px; margin-top: 8px; }

footer.foot { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 14px; }
footer.foot .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; }
footer.foot a { color: var(--muted); }

/* Политика */
.doc { max-width: 720px; padding: 56px 20px 80px; }
.doc h1 { font-size: 34px; letter-spacing: -.02em; }
.doc p, .doc li { color: var(--text-2); }

@media (max-width: 960px) {
  .wallets { grid-template-columns: 1fr 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 16px; }
  .nav { display: none; }
  .langs { margin-left: auto; }
  .feat, .install { grid-template-columns: 1fr; gap: 18px; }
  .feat:nth-child(even) .pic { order: 0; }
  .grid { grid-template-columns: 1fr; }
  .wallets { grid-template-columns: 1fr; }
  .qr { max-width: 220px; margin: 0 auto; }
  .hero { padding-top: 48px; }
  section.block { padding: 56px 0; }
}
.doc h2 { font-size: 20px; margin: 32px 0 8px; }
.doc .muted-date { color: var(--muted); font-size: 14px; margin-top: -8px; }
.doc a { color: var(--text); }
.brand + .langs { margin-left: auto; }
.hero.small { padding: 64px 0 8px; }
section.block.first { border-top: 0; padding-top: 32px; }
.store .emoji { font-size: 34px; line-height: 1; flex: none; }
.note { color: var(--muted); font-size: 14px; margin: 18px 0 0; }
.note a { color: var(--text); }
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--text-2); margin: 10px 0 0; }
.fb-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.fb-cta .sub { margin-bottom: 0; }
.fb-form { display: flex; flex-direction: column; gap: 16px; max-width: 720px; padding: 24px; }
.seg { display: inline-flex; gap: 2px; background: var(--field); border-radius: 999px; padding: 3px; align-self: flex-start; flex-wrap: wrap; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 7px 16px; border-radius: 999px; color: var(--muted); font-weight: 600; font-size: 14px; }
.seg input:checked + span { background: var(--accent); color: var(--on-accent); }
.seg input:focus-visible + span { outline: 2px solid var(--text); outline-offset: 2px; }
.fld { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--text-2); }
.fld textarea, .fld input { font: 15px/1.5 var(--font); color: var(--text); background: var(--field); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; resize: vertical; }
.fld textarea:focus, .fld input:focus { outline: none; border-color: var(--accent); }
.fb-form .btn { align-self: flex-start; }
.fb-form .btn:disabled { opacity: .6; cursor: default; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; }
.fb-status { margin: 0; font-size: 14px; color: var(--muted); min-height: 1.4em; }
.fb-status.ok { color: #7ddc8a; }
.fb-status.err { color: var(--warn); }
.fb-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.fb-grid .fb-form { max-width: none; }
.fb-side { display: flex; flex-direction: column; gap: 12px; }
.fb-side h3 { margin: 4px 0 4px; font-size: 18px; color: var(--text-2); }
.fb-side .note { margin-top: 4px; }
.faq { max-width: none; }
@media (max-width: 860px) { .fb-grid { grid-template-columns: 1fr; } }
.fb-status:empty { display: none; }

/* Светлая тема по системным настройкам */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f6f3; --card: #ffffff; --line: #e3e2dd;
    --text: #141416; --text-2: #34343a; --muted: #6b6a70;
    --field: #ecebe7; --accent: #12a66a; --on-accent: #ffffff; --warn: #9a6400;
    --topbar: rgba(246,246,243,.85); --hover-line: #c9c8c2;
  }
  .fb-status.ok { color: #12a66a; }
}

/* Демонстрация до/после */
.demo { margin: 56px auto 0; max-width: 960px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; text-align: left; }
.demo .tile { padding: 16px 18px 14px; position: relative; overflow: hidden; }
.demo .tile.after { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); box-shadow: 0 0 60px -20px var(--accent); }
.demo-h { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.demo-h b { margin: 0; }
.demo-h small { color: var(--muted); font-size: 13px; }
.demo canvas { display: block; width: 100%; height: 150px; }
.demo-legend { display: flex; gap: 18px; justify-content: center; color: var(--muted); font-size: 13px; margin-top: 12px; grid-column: 1 / -1; }
.demo-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

/* Значки возможностей и шаги */
.ico { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 14px; background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.ico svg { width: 22px; height: 22px; }
.grid .tile b { font-size: 17px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; counter-reset: step; }
.steps .tile::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; margin-bottom: 14px; }
.store-badge { font-size: 12px; color: var(--muted); }
@media (max-width: 680px) {
  .demo, .steps { grid-template-columns: 1fr; }
}

/* Ещё от автора (как на сайте Snapt) */
.apps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
@media (max-width: 820px) { .apps { grid-template-columns: 1fr; } }
.app { --a: #ff7a8a; --b: #a98bff; padding: 0; overflow: hidden; display: flex; flex-direction: column; transition: transform .15s, box-shadow .15s, border-color .15s; }
.app-snapt { --a: #8b5cf6; --b: #c084fc; }
.app:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--a) 45%, var(--line)); box-shadow: 0 18px 44px color-mix(in srgb, var(--a) 18%, transparent); }
.app .shot { display: block; position: relative; background: #0b0b0d; border-bottom: 1px solid var(--line); }
.app .shot::after { content: ""; position: absolute; inset: auto 0 0; height: 3px; background: linear-gradient(90deg, var(--a), var(--b)); }
.app-video-glow .shot::after { background: linear-gradient(90deg, #ffb36b, #ff7a8a 45%, #a98bff 75%, #5fb4ff); }
.app .shot img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; }
.app-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.app header { display: flex; align-items: center; gap: 14px; }
.app header img { width: 52px; height: 52px; border-radius: 13px; flex: none; box-shadow: 0 6px 18px color-mix(in srgb, var(--a) 30%, transparent); }
.app header h3 { margin: 0; font-size: 21px; }
.app header span { color: var(--muted); font-size: 14px; }
.app p { margin: 14px 0 16px; color: var(--text-2); }
.chips { list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: 13px; font-weight: 600; padding: 4px 11px; border-radius: 999px; background: color-mix(in srgb, var(--a) 13%, transparent); color: color-mix(in srgb, var(--a) 70%, var(--text)); }
.app-links { margin-top: auto; display: flex; flex-wrap: wrap; gap: 10px; }
.btn-app { display: inline-flex; align-items: center; gap: 7px; padding: 9px 15px; border-radius: 10px; border: 1px solid var(--line); color: var(--text); text-decoration: none; font-weight: 600; font-size: 14px; }
.btn-app:hover { border-color: var(--a); }
.btn-app svg { width: 15px; height: 15px; }
.btn-app.primary { border-color: transparent; color: #0b0d10; background: linear-gradient(90deg, var(--a), var(--b)); }
.btn-app.primary:hover { filter: brightness(1.06); }
@media (prefers-reduced-motion: reduce) { .app { transition: none; } .app:hover { transform: none; } }
.btn-app span { color: inherit; font-size: inherit; }