/* Лендинг ОкнаПро — те же токены, что в программе (src/styles.css), светлая и тёмная тема */
:root {
  --bg: #f4f6fa;
  --bg-elev: #ffffff;
  --bg-sunken: #eef1f6;
  --line: #e2e8f0;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #8491a5;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #e4ecfd;
  --accent-text: #1e40af;
  --ok: #16a34a;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.16);
  --radius: 12px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --glass: #cfe3ff;
  --frame: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1018;
    --bg-elev: #131a25;
    --bg-sunken: #0f151f;
    --line: #243042;
    --text: #e5e9f0;
    --text-2: #aab4c5;
    --text-3: #6f7d94;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-soft: #1b2a4a;
    --accent-text: #93c5fd;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
    --glass: #1e3a66;
    --frame: #e5e9f0;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1018; --bg-elev: #131a25; --bg-sunken: #0f151f; --line: #243042;
  --text: #e5e9f0; --text-2: #aab4c5; --text-3: #6f7d94;
  --accent: #3b82f6; --accent-hover: #60a5fa; --accent-soft: #1b2a4a; --accent-text: #93c5fd;
  --glass: #1e3a66; --frame: #e5e9f0;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 760px; }
.section { padding: 72px 0; }
.section.alt { background: var(--bg-sunken); }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); text-align: center; }
.sub { text-align: center; color: var(--text-2); font-size: 17px; max-width: 680px; margin: 12px auto 40px; }
.sub.left { text-align: left; margin-left: 0; }
.eyebrow { color: var(--accent-text); background: var(--accent-soft); display: inline-block; font-size: 13px; font-weight: 600; padding: 4px 10px; border-radius: 999px; margin-bottom: 14px; }

/* Кнопки */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 16px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: var(--bg-elev); color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-text); }
.btn-light { background: #fff; color: var(--accent-text); }
.btn-light:hover { background: #eef3ff; }
.btn-lg { height: 48px; padding: 0 22px; font-size: 16px; }

/* Шапка */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: saturate(160%) blur(12px); -webkit-backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--line); }
.top-row { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-size: 20px; letter-spacing: -0.02em; }
.logo-mark { width: 28px; height: 28px; border-radius: 7px; background: var(--accent); position: relative; flex: none; }
.logo-mark::before { content: ''; position: absolute; inset: 5px; border: 2.5px solid #fff; }
.logo-mark::after { content: ''; position: absolute; left: 50%; top: 5px; bottom: 5px; width: 2.5px; background: #fff; transform: translateX(-50%); box-shadow: 0 0 0 0 transparent; }
.logo-text b { color: var(--accent); font-weight: 800; }
.logo.small { font-size: 17px; }
.logo.small .logo-mark { width: 22px; height: 22px; }
.nav { display: flex; gap: 22px; margin-left: 12px; font-size: 15px; color: var(--text-2); }
.nav a:hover { color: var(--text); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang { display: flex; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--bg-elev); }
.lang button { border: 0; background: transparent; color: var(--text-2); font: inherit; font-size: 13px; font-weight: 600; padding: 6px 9px; cursor: pointer; }
.lang button.on { background: var(--accent-soft); color: var(--accent-text); }
.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-elev); position: relative; cursor: pointer; }
.burger span, .burger span::before, .burger span::after { position: absolute; left: 11px; width: 18px; height: 2px; background: var(--text); border-radius: 2px; content: ''; }
.burger span { top: 19px; }
.burger span::before { top: -6px; left: 0; }
.burger span::after { top: 6px; left: 0; }
.mobile-menu { display: flex; flex-direction: column; gap: 6px; padding: 10px 16px 16px; border-top: 1px solid var(--line); background: var(--bg-elev); }
.mobile-menu a { padding: 10px 4px; font-size: 16px; }
.mobile-menu .btn { margin-top: 6px; }
.mobile-menu[hidden] { display: none; }

/* Первый экран */
.hero { padding: 64px 0 56px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(32px, 4.4vw, 50px); font-weight: 800; letter-spacing: -0.025em; }
.lead { font-size: 18px; color: var(--text-2); margin: 20px 0 28px; max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-points { margin-top: 26px; display: grid; gap: 8px; color: var(--text-2); font-size: 15px; }
.hero-points li::before, .checks li::before { content: '✓'; display: inline-block; width: 22px; color: var(--ok); font-weight: 700; }

.hero-visual { position: relative; }
.app-mock { background: var(--bg-elev); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-lg); overflow: hidden; font-size: 12px; }
.mock-bar { height: 34px; display: flex; align-items: center; gap: 7px; padding: 0 12px; background: var(--bg-sunken); border-bottom: 1px solid var(--line); }
.mock-bar span { width: 11px; height: 11px; border-radius: 50%; background: #e5e7eb; }
.mock-bar span:nth-child(1) { background: #fe5f57; } .mock-bar span:nth-child(2) { background: #febc2e; } .mock-bar span:nth-child(3) { background: #28c840; }
.mock-bar i { margin-left: auto; margin-right: auto; font-style: normal; color: var(--text-3); font-size: 12px; }
.mock-body { display: grid; grid-template-columns: 128px 1fr; min-height: 300px; }
.mock-side { background: var(--bg-sunken); border-right: 1px solid var(--line); padding: 10px 8px; display: grid; gap: 4px; align-content: start; }
.mock-nav { padding: 7px 10px; border-radius: 7px; color: var(--text-2); font-weight: 500; }
.mock-nav.on { background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.mock-main { display: grid; grid-template-columns: 1fr 170px; gap: 12px; padding: 14px; }
.mock-drawing { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; display: flex; align-items: center; justify-content: center; padding: 10px; }
.mock-drawing svg { width: 100%; max-width: 260px; height: auto; }
.mock-drawing .frame { fill: var(--frame); stroke: var(--text); stroke-width: 2; }
.mock-drawing .frame-in { fill: none; stroke: var(--text); stroke-width: 1.2; }
.mock-drawing .impost { stroke: var(--text); stroke-width: 3; }
.mock-drawing .sash { fill: none; stroke: var(--text); stroke-width: 1.4; }
.mock-drawing .glass { fill: var(--glass); opacity: .75; }
.mock-drawing .open { fill: none; stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 3 3; }
.mock-drawing .dim { font: 10px var(--mono); fill: var(--text-3); }
.mock-side-panel { display: grid; gap: 7px; align-content: start; }
.mock-row { display: flex; justify-content: space-between; gap: 8px; padding: 6px 8px; background: var(--bg); border: 1px solid var(--line); border-radius: 7px; color: var(--text-3); }
.mock-row b { color: var(--text); font-weight: 600; text-align: right; }
.mock-total { margin-top: 4px; padding: 8px; background: var(--accent-soft); border-radius: 7px; color: var(--accent-text); display: flex; justify-content: space-between; align-items: center; }
.mock-total b { font-size: 15px; }
.mock-btn { background: var(--accent); color: #fff; text-align: center; padding: 7px; border-radius: 7px; font-weight: 600; }
.float-card { position: absolute; background: var(--bg-elev); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow-lg); padding: 9px 13px; display: grid; gap: 1px; font-size: 13px; }
.float-card small { color: var(--text-3); font-size: 11px; }
.float-card b { font-weight: 600; }
.float-card.c1 { left: -22px; bottom: 36px; }
.float-card.c2 { right: -16px; top: 26px; }
.float-card.c2 b { color: var(--ok); }

/* Цифры */
.stats { padding: 8px 0 0; }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 12px; }
.stats-row div { text-align: center; display: grid; gap: 2px; }
.stats-row b { font-size: 30px; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; }
.stats-row span { color: var(--text-2); font-size: 14px; }

/* Карточки */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); display: grid; gap: 10px; align-content: start; }
.card .ico { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; font-size: 20px; font-weight: 700; }
.card h3 { font-size: 17px; }
.card p { color: var(--text-2); font-size: 15px; }

/* Шаги */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; counter-reset: s; }
.steps li { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 10px; align-content: start; }
.steps .num { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 700; }
.steps h3 { font-size: 17px; }
.steps p { color: var(--text-2); font-size: 15px; }

/* Роли */
.roles { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.role { background: var(--bg-elev); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius-sm); padding: 14px 16px; display: grid; gap: 4px; }
.role b { font-size: 16px; }
.role span { color: var(--text-2); font-size: 14px; }

/* Платформы */
.platforms { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.platforms h2 { text-align: left; }
.checks { display: grid; gap: 12px; font-size: 16px; color: var(--text-2); }

/* Тарифы */
.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; align-items: stretch; max-width: 820px; margin: 0 auto; }
.plan { position: relative; background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; display: grid; gap: 16px; align-content: start; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.plan .tag { position: absolute; top: -12px; left: 22px; background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.plan h3 { font-size: 19px; }
.price { display: grid; gap: 2px; }
.price b { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; }
.price span { color: var(--text-3); font-size: 14px; }
.plan ul { display: grid; gap: 8px; color: var(--text-2); font-size: 15px; }
.plan li::before { content: '•'; color: var(--accent); display: inline-block; width: 16px; }
.plan .btn { margin-top: auto; }
.note { text-align: center; color: var(--text-3); font-size: 14px; margin-top: 20px; }

/* Скоро */
.soon-row { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.soon h2 { text-align: left; }
.city-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.city-chips span { background: var(--bg-elev); border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px; font-size: 14px; color: var(--text-2); }

/* Вопросы */
details { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0 18px; margin-top: 10px; }
summary { cursor: pointer; padding: 15px 0; font-weight: 600; font-size: 16px; list-style: none; position: relative; padding-right: 30px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 2px; top: 11px; font-size: 22px; color: var(--text-3); }
details[open] summary::after { content: '−'; }
details p { color: var(--text-2); padding: 0 0 16px; font-size: 15px; }
#faq h2 { margin-bottom: 20px; }

/* Финальный призыв */
.cta-band { background: linear-gradient(135deg, var(--accent), #1e40af); color: #fff; padding: 56px 0; }
.cta-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); }
.cta-band p { opacity: .85; margin-top: 6px; font-size: 17px; }

/* Футер */
.foot { padding: 28px 0; border-top: 1px solid var(--line); }
.foot-row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot nav { display: flex; gap: 18px; font-size: 14px; color: var(--text-2); flex-wrap: wrap; }
.foot nav a:hover { color: var(--text); }
.copy { margin-left: auto; color: var(--text-3); font-size: 13px; }

/* Адаптив */
@media (max-width: 1000px) {
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
}
@media (max-width: 860px) {
  .hero { padding: 40px 0 36px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { padding: 0 4px; }
  .float-card.c1 { left: 0; bottom: -14px; }
  .float-card.c2 { right: 0; top: -14px; }
  .platforms, .soon-row { grid-template-columns: 1fr; gap: 28px; }
  .plans { grid-template-columns: 1fr; }
  .plan.featured { order: -1; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .top-actions .btn, .top-actions .lang { display: none; }
  .burger { display: block; }
  .section { padding: 52px 0; }
}
@media (max-width: 560px) {
  .grid3, .steps { grid-template-columns: 1fr; }
  .hero-cta .btn { width: 100%; }
  .mock-main { grid-template-columns: 1fr; }
  .mock-body { grid-template-columns: 96px 1fr; }
  .copy { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }