:root {
  --bg: #f7f6f3;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --line: #e4e2dc;
  --accent: #c2410c;
  --accent-soft: #fde9dd;
  --green: #16a34a;
  --yellow: #ca8a04;
  --orange: #ea580c;
  --red: #dc2626;
  --menu: rgba(250, 250, 250, 0.92);
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111113;
    --surface: #1a1a1d;
    --text: #ececef;
    --muted: #9a9aa3;
    --line: #2a2a2f;
    --accent: #fb923c;
    --accent-soft: #3a2316;
    --menu: rgba(40, 40, 44, 0.92);
  }
}

* { box-sizing: border-box; }

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

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

.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }

header.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 0; gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 720; font-size: 18px; color: var(--text); letter-spacing: -0.02em; white-space: nowrap; flex: none; }
.brand:hover { text-decoration: none; }
.brand img { display: block; }
.brand b { color: var(--accent); font-weight: inherit; }
nav.top { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 4px 18px; }
nav.top a { color: var(--muted); font-size: 15px; white-space: nowrap; }
@media (max-width: 480px) { nav.top { gap: 2px 12px; } nav.top a { font-size: 14px; } }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; background: none; color: var(--muted); font: inherit; font-size: 14px; cursor: pointer; }
nav.top a.lang { font-size: 14px; }
a.lang:hover { text-decoration: none; color: var(--text); border-color: var(--muted); }

h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.08; letter-spacing: -0.03em; margin: 48px 0 16px; }
h2 { font-size: 26px; letter-spacing: -0.02em; margin: 56px 0 16px; }
h3 { font-size: 18px; margin: 0 0 6px; }
.lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }

.buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 10px; font-weight: 600;
  border: 1px solid var(--line); color: var(--text); background: var(--surface);
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:hover { text-decoration: none; filter: brightness(1.05); }

.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 820px) { .hero { grid-template-columns: 1fr; } }

/* Запись демо-режима приложения (выдуманные чаты) */
.demo { display: block; width: 100%; max-width: 442px; height: auto; margin: 0 auto; border-radius: 12px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18); background: var(--surface); }

/* Меню-иллюстрация: вымышленные чаты */
.menu {
  background: var(--menu); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18); padding: 8px 0; font-size: 14px;
  backdrop-filter: blur(20px);
}
.menu .bar { display: flex; justify-content: flex-end; gap: 14px; padding: 0 14px 8px; border-bottom: 1px solid var(--line); margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.menu .row { display: flex; align-items: center; gap: 8px; padding: 4px 14px; white-space: nowrap; overflow: hidden; }
.menu .row .pct { font-family: var(--mono); font-weight: 700; width: 40px; text-align: right; }
.menu .row .name { overflow: hidden; text-overflow: ellipsis; }
.menu .row .meta { color: var(--muted); font-size: 12px; margin-left: auto; padding-left: 10px; }
.menu .head { color: var(--muted); font-size: 12px; padding: 6px 14px 2px; }
.menu .sep { height: 1px; background: var(--line); margin: 6px 0; }
.menu .lim { font-family: var(--mono); font-size: 12.5px; padding: 3px 14px; color: var(--text); }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.g { background: var(--green); } .y { background: var(--yellow); } .o { background: var(--orange); } .r { background: var(--red); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .icon { font-size: 22px; margin-bottom: 8px; }

.note { background: var(--accent-soft); border-radius: var(--radius); padding: 16px 20px; color: var(--text); font-size: 15px; }

pre {
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; overflow-x: auto; font: 14px/1.5 var(--mono); margin: 10px 0 18px;
}
code { font-family: var(--mono); font-size: 0.92em; }
ol.steps { padding-left: 22px; }
ol.steps li { margin-bottom: 14px; }

.donate { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.coin { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; gap: 18px; align-items: center; }
.coin .qr { background: #fff; padding: 8px; border-radius: 8px; flex: none; width: 128px; height: 128px; }
.coin .qr img, .coin .qr canvas { width: 112px !important; height: 112px !important; }
.coin .addr { font-family: var(--mono); font-size: 13px; word-break: break-all; margin: 6px 0 10px; }
.coin .warn { font-size: 13px; color: var(--muted); margin-top: 8px; }
.copy { font: inherit; font-size: 13px; padding: 5px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg); color: var(--text); cursor: pointer; }
@media (max-width: 420px) { .coin { flex-direction: column; align-items: flex-start; } }

.projects { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-top: 24px; }
.project { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; color: var(--text); display: block; }
.project:hover { text-decoration: none; border-color: var(--accent); }
.project .tag { display: inline-block; font-size: 12px; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 2px 10px; margin-bottom: 10px; }
.project p { color: var(--muted); margin: 6px 0 0; font-size: 15px; }
.project.soon { opacity: 0.6; }

footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 72px; padding: 24px 0 40px; }


/* Полоса статистики */
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 0; }
.stats .s { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 8px 14px; min-width: 96px; }
.stats .s b { display: block; font-size: 19px; letter-spacing: -0.01em; }
.stats .s span { color: var(--muted); font-size: 12.5px; }

/* Проблема → решение (страница продукта) */
.ps { margin-top: 64px; scroll-margin-top: 16px; }
.ps h2 { margin: 4px 0 18px; }
.eyebrow { margin: 0; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.ps-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 16px; align-items: stretch; }
@media (max-width: 820px) { .ps-grid { grid-template-columns: 1fr; } }
.ps-problem, .ps-solution { border-radius: var(--radius); padding: 20px 22px; }
.ps-problem { background: var(--surface); border: 1px solid var(--line); }
.ps-problem ul { margin: 0; padding: 0; list-style: none; }
.ps-problem li { position: relative; padding-left: 22px; margin: 0 0 14px; color: var(--muted); font-size: 15.5px; }
.ps-problem li:last-child { margin-bottom: 0; }
.ps-problem li::before { content: "✕"; position: absolute; left: 0; top: 0; color: var(--red); font-weight: 700; }
.ps-problem b { color: var(--text); }
.ps-solution { background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
.ps-solution h3 { font-size: 19px; margin-bottom: 12px; }
ol.flow { margin: 0; padding: 0; list-style: none; counter-reset: step; }
ol.flow li { counter-increment: step; position: relative; padding-left: 38px; margin: 0 0 12px; font-size: 15.5px; }
ol.flow li::before { content: counter(step); position: absolute; left: 0; top: 1px; width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 14px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.ps-result { margin: 14px 0 0; padding-top: 12px; border-top: 1px solid color-mix(in srgb, var(--accent) 25%, transparent); font-size: 14.5px; color: var(--muted); }

/* Страж сети: четыре шага со значком из строки меню */
.gflow-title { margin: 28px 0 12px; font-size: 19px; }
.gflow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; counter-reset: g; position: relative; }
@media (max-width: 860px) { .gflow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .gflow { grid-template-columns: 1fr; } }
.gflow li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; counter-increment: g; position: relative; }
.gflow li::before { content: counter(g); position: absolute; top: 12px; right: 14px; font-size: 12px; font-weight: 700; color: var(--muted); }
.gflow li.bad { border-color: color-mix(in srgb, var(--red) 55%, transparent); background: color-mix(in srgb, var(--red) 7%, var(--surface)); }
.gflow p { margin: 12px 0 0; font-size: 14.5px; color: var(--muted); line-height: 1.5; }
.gflow p b { display: block; color: var(--text); font-size: 15.5px; margin-bottom: 2px; }
/* мини-строка меню macOS */
.mb { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 8px; background: #26262b; color: #f4f4f5; font: 600 14px/1 -apple-system, BlinkMacSystemFont, sans-serif; font-variant-numeric: tabular-nums; box-shadow: inset 0 0 0 1px rgba(255,255,255,.06); }
.mb b { font-weight: 600; }
.mb em { font-style: normal; color: #a1a1aa; }
.mb strong { color: #f87171; font-weight: 800; letter-spacing: .02em; }
.mb .d { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.mb .d.o { background: var(--orange); }

.demo-fig { margin: 20px 0 0; }
.demo.demo-wide { max-width: 798px; }
.demo-fig figcaption { margin-top: 10px; text-align: center; color: var(--muted); font-size: 14px; }

/* Проблема → решение, версия 2: номер, красная карточка, стрелка, зелёная карточка */
.ov { display: grid; gap: 12px; margin: 40px 0 0; }
.ov-item { display: grid; grid-template-columns: auto 1fr auto 1.3fr; align-items: center; gap: 16px; padding: 16px 20px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); color: var(--text); }
.ov-item:hover { text-decoration: none; border-color: var(--accent); }
.ov-p { font-weight: 700; color: var(--red); }
.ov-s { font-weight: 600; color: var(--green); }
.ov-arrow { font-size: 22px; color: var(--muted); }
@media (max-width: 640px) { .ov-item { grid-template-columns: auto 1fr; } .ov-arrow { display: none; } .ov-s { grid-column: 2; } }

.pb { margin-top: 72px; scroll-margin-top: 16px; }
.pb-head { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.pb-head h2 { margin: 0; }
.pb-num { flex: none; width: 40px; height: 40px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; font-size: 20px; display: inline-flex; align-items: center; justify-content: center; }
.pb-grid { display: grid; grid-template-columns: 1fr 44px 1fr; gap: 12px; align-items: stretch; }
.pb-arrow { display: flex; align-items: center; justify-content: center; font-size: 34px; font-weight: 700; color: var(--accent); }
@media (max-width: 820px) { .pb-grid { grid-template-columns: 1fr; } .pb-arrow { transform: rotate(90deg); height: 36px; } }
.pb-card { border-radius: var(--radius); padding: 20px 22px; background: var(--surface); border: 1px solid var(--line); }
.pb-problem { border-top: 5px solid var(--red); }
.pb-solution { border-top: 5px solid var(--green); }
.pb-label { margin: 0 0 12px; font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.pb-problem .pb-label { color: var(--red); }
.pb-solution .pb-label { color: var(--green); }
.pb-card ul, .pb-card ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.pb-card li { font-size: 16px; line-height: 1.45; color: var(--muted); }
.pb-card li b { color: var(--text); }
.pb-problem li { display: grid; grid-template-columns: 30px 1fr; }
.pb-problem li i { font-style: normal; }
.pb-solution ol { counter-reset: st; }
.pb-solution li { counter-increment: st; display: grid; grid-template-columns: 30px 1fr; }
.pb-solution li::before { content: counter(st); width: 22px; height: 22px; margin-top: 1px; border-radius: 50%; background: var(--green); color: #fff; font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.pb-result { margin: 14px 0 0; padding: 12px 18px; border-radius: 12px; background: color-mix(in srgb, var(--green) 10%, transparent); color: var(--text); font-weight: 600; font-size: 15.5px; }
.more { margin-top: 72px; }

/* Трекер донатов */
.donations { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; margin: 6px 0 18px; }
.dn-total { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 14px; }
.dn-total b { font-size: 34px; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.dn-total > span { color: var(--muted); }
.dn-coins { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.dn-coins span { font: 14px/1 var(--mono); background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
.dn-note { margin: 10px 0 0; color: var(--muted); font-size: 13.5px; }
@media (max-width: 640px) { .pb-head h2 { font-size: 22px; line-height: 1.25; } .pb { margin-top: 52px; } }

/* Главная: первый экран, флагман, принципы */
.hh { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding: 36px 0 12px; }
@media (max-width: 860px) { .hh { grid-template-columns: 1fr; gap: 28px; } }
.hh h1 { font-size: clamp(38px, 6.4vw, 64px); line-height: 1.02; letter-spacing: -0.04em; margin: 14px 0 18px; }
.hh h1 em { font-style: normal; background: linear-gradient(90deg, var(--accent), #f59e0b); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hh .lead { margin-bottom: 26px; }
.hh .stats { margin-top: 26px; }
.hh-visual { position: relative; display: flex; justify-content: center; }
.hh-glow { position: absolute; inset: 8% 6%; border-radius: 40px; background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 45%, transparent), transparent); filter: blur(30px); opacity: .7; }
.hh-visual video { position: relative; width: 100%; max-width: 400px; height: auto; border-radius: 16px; box-shadow: 0 30px 70px rgba(0,0,0,.28); border: 1px solid var(--line); background: var(--surface); }
.float { position: absolute; display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: 10px; background: #26262b; color: #f4f4f5; font: 600 14px/1 -apple-system, BlinkMacSystemFont, sans-serif; box-shadow: 0 10px 24px rgba(0,0,0,.25); animation: bob 5s ease-in-out infinite; }
.float .d { width: 9px; height: 9px; border-radius: 50%; background: var(--red); display: inline-block; }
.float.bad { color: #f87171; font-weight: 800; }
.f1 { top: 6%; left: 0; } .f2 { top: 30%; right: -2%; animation-delay: -1.2s; } .f3 { bottom: 22%; left: -3%; animation-delay: -2.4s; } .f4 { bottom: 6%; right: 4%; animation-delay: -3.6s; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@media (prefers-reduced-motion: reduce) { .float { animation: none; } }
@media (max-width: 480px) { .f2, .f3 { display: none; } }

.feat { margin-top: 72px; display: grid; grid-template-columns: 1fr 1.15fr; gap: 36px; align-items: center; padding: 32px; border-radius: 24px; background: linear-gradient(135deg, var(--surface), color-mix(in srgb, var(--accent) 7%, var(--surface))); border: 1px solid var(--line); }
@media (max-width: 860px) { .feat { grid-template-columns: 1fr; padding: 22px; } }
.feat h2 { display: flex; align-items: center; gap: 14px; margin: 8px 0 10px; font-size: 34px; }
.feat h2 img { border-radius: 10px; }
.feat-lead { font-size: 18px; color: var(--muted); margin: 0 0 18px; }
.feat-rows { display: grid; gap: 8px; margin-bottom: 22px; }
.fr { display: grid; grid-template-columns: 1fr auto 1.2fr; gap: 10px; align-items: center; padding: 10px 14px; border-radius: 12px; background: var(--bg); border: 1px solid var(--line); font-size: 15px; }
.fr-p { color: var(--red); font-weight: 700; } .fr-a { color: var(--muted); } .fr-s { color: var(--green); font-weight: 650; }
@media (max-width: 480px) { .fr { grid-template-columns: 1fr; gap: 2px; } .fr-a { display: none; } }
.feat-meta { margin: 14px 0 0; color: var(--muted); font-size: 13.5px; }
.feat-visual video { width: 100%; height: auto; border-radius: 14px; box-shadow: 0 20px 50px rgba(0,0,0,.22); display: block; }

.principles { margin-top: 72px; }
.pr-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
@media (max-width: 860px) { .pr-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .pr-grid { grid-template-columns: 1fr; } }
.pr { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.pr-i { font-size: 26px; margin-bottom: 10px; }
.pr h3 { font-size: 17px; margin: 0 0 6px; }
.pr p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.5; }

.next { margin-top: 56px; display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; padding: 24px 28px; border-radius: var(--radius); border: 1px dashed var(--line); }
.next h2 { margin: 0 0 6px; font-size: 22px; }
.next p { margin: 0; color: var(--muted); }