@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-cyrillic.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(fonts/manrope-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
  color-scheme: dark;
  --bg: #101722; --surface: #172231; --text-primary: #f1f5fa;
  --text-secondary: #b4c0d0; --text-muted: #97a8bd; --accent: #83c1ff;
  --accent-glow: #83c1ff20; --glass-bg: #ffffff05; --glass-bg-2: #ffffff08;
  --glass-border: #d4e7ff22; --glass-border-strong: #d4e7ff38; --maxw: 1180px;
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f8fafc; --surface: #edf2f8; --text-primary: #182537;
  --text-secondary: #536276; --text-muted: #5f7086; --accent: #0868c5;
  --accent-glow: #0868c512; --glass-bg: #102e4e04; --glass-bg-2: #102e4e07;
  --glass-border: #132e4b1c; --glass-border-strong: #132e4b35;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { background: var(--bg); color: var(--text-primary); font: 400 16px/1.65 Manrope, system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
button, summary, select { cursor: pointer; }
a, button, select, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 32px; }
.skip-link { position: fixed; top: 10px; left: 20px; z-index: 100; padding: 10px 20px; background: var(--surface); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
nav { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--glass-border); }
.nav-inner { height: 76px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 23px; font-weight: 800; letter-spacing: -.8px; white-space: nowrap; }
.bolt { display: inline-flex; color: #ffcc22; }
.bolt svg { fill: currentColor; }
.nav-links { display: flex; gap: 21px; margin-inline: auto; }
.nav-links a { color: var(--text-secondary); font-size: 12px; white-space: nowrap; }
a:hover { color: var(--accent); }
.nav-tools { display: flex; gap: 10px; align-items: center; margin-inline-start: auto; }
.lang-select, .icon-btn { height: 36px; color: var(--text-secondary); background: var(--surface); border: 1px solid var(--glass-border); border-radius: 8px; }
.lang-select { font-size: 12px; padding: 0 7px; max-width: 106px; }
.icon-btn { width: 36px; display: grid; place-items: center; }
.sun, [data-theme="light"] .moon { display: none; }
[data-theme="light"] .sun { display: block; }
.btn { display: inline-flex; gap: 9px; align-items: center; justify-content: center; padding: 13px 21px; border-radius: 9px; font-size: 14px; line-height: 1.5; font-weight: 700; transition: background .15s, box-shadow .15s; }
.btn-primary { background: #1478d5; color: #fff; border: 1px solid #3898ee; }
.btn-primary:hover { color: #fff; background: #086bc6; box-shadow: 0 4px 18px #1376d329; }
.btn-ghost { color: var(--text-secondary); }
.nav-tools .btn { font-size: 12px; padding: 9px 13px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.17fr) minmax(0, 1fr); align-items: center; gap: 52px; padding-top: 60px; padding-bottom: 56px; }
.hero > * { min-width: 0; }
.pill { display: inline-block; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .025em; margin-bottom: 23px; }
.pill .bolt { display: none; }
.hero h1 { font-size: clamp(42px, 5.15vw, 66px); line-height: 1.08; font-weight: 800; letter-spacing: -.055em; }
.hero h1 .grad { color: var(--accent); }
:lang(ru) .hero h1 { font-size: clamp(40px, 4.5vw, 57px); }
.hero .lead { font-size: 17px; line-height: 1.8; max-width: 49ch; margin: 24px 0; color: var(--text-secondary); }
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 5px; }
.hero-note { max-width: 47ch; font-size: 12px; color: var(--text-muted); margin-top: 15px; }
.release-note { font-size: 10px; letter-spacing: .025em; color: var(--accent); margin-top: 28px; }
.trust { display: flex; flex-wrap: wrap; gap: 5px 15px; margin-top: 15px; font-size: 11px; color: var(--text-secondary); }
.trust .dot { color: var(--accent); font-size: 10px; }
.language-note { margin-top: 14px; font-size: 12px; color: var(--text-secondary); }
section { padding-block: 64px; }
.detail-section, #how, #faq { border-top: 1px solid var(--glass-border); }
.section-head { max-width: 720px; margin-bottom: 32px; }
.eyebrow { display: block; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; margin-bottom: 12px; }
h2 { font-size: clamp(30px, 3.4vw, 42px); line-height: 1.2; letter-spacing: -.04em; font-weight: 800; }
.section-head p { max-width: 68ch; margin-top: 16px; font-size: 15px; color: var(--text-secondary); }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; counter-reset: step; }
.step { border-top: 1px solid var(--glass-border-strong); padding-top: 20px; }
.step-top { margin-bottom: 18px; }
.step .num { font: 500 26px/1 ui-monospace, monospace; color: var(--accent); }
.step .num::before { counter-increment: step; content: '0' counter(step); }
.step-ico { display: none; }
.step h3 { font-size: 16px; margin-bottom: 10px; line-height: 1.4; }
.step p { font-size: 13px; color: var(--text-secondary); }
#privacy { padding-top: 10px; }
.privacy-box { display: grid; grid-template-columns: 42px .85fr 1.3fr; gap: 24px; align-items: start; padding: 32px; background: var(--surface); border: 1px solid var(--glass-border); border-radius: 14px; }
.shield { color: var(--accent); padding-top: 5px; }
.privacy-box h2 { font-size: 30px; }
.privacy-copy { min-width: 0; }
.privacy-copy p { font-size: 14px; color: var(--text-secondary); }
.privacy-copy > a { display: inline-block; font-size: 12px; margin-top: 18px; color: var(--accent); }
.privacy-detail { margin-top: 15px; }
.privacy-detail summary { font-size: 12px; font-weight: 700; }
.privacy-detail p { margin-top: 12px; font-size: 12px; }
.final { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px 32px; border-top: 1px solid var(--glass-border); padding-block: 46px; }
.final h2 { font-size: 34px; }
.final p { color: var(--text-secondary); font-size: 14px; }
.final .btn { grid-column: 2; grid-row: 1 / 3; }
footer { border-top: 1px solid var(--glass-border); padding: 30px 0 24px; }
.foot-inner { display: flex; align-items: start; gap: 44px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 20px; padding-top: 8px; }
.foot-links a { font-size: 11px; color: var(--text-secondary); }
.foot-links a:hover { color: var(--accent); }
.disclaimer { color: var(--text-muted); font-size: 10px; margin-top: 25px; max-width: 105ch; }
@media (max-width: 1050px) { .nav-links { gap: 14px; } .nav-links a[href="#privacy"], .nav-links a[href="#formats"] { display: none; } .hero { gap: 30px; } }
@media (max-width: 800px) {
 .nav-links { display: none; } .hero { grid-template-columns: minmax(0,1fr) minmax(0,.8fr); gap: 24px; padding-block: 40px; }
 .hero h1, :lang(ru) .hero h1 { font-size: 43px; } .hero .lead { font-size: 15px; }
 .steps { grid-template-columns: repeat(2, minmax(0,1fr)); }
 .privacy-box { grid-template-columns: 35px 1fr; } .privacy-copy { grid-column: 2; }
 .final { grid-template-columns: 1fr; } .final .btn { grid-column: 1; grid-row: auto; justify-self: start; margin-top: 12px; }
}
@media (max-width: 600px) {
 .wrap { padding-inline: 22px; } .nav-inner { height: 65px; gap: 12px; } .brand { font-size: 21px; } .nav-tools .btn { display: none; }
 .hero { grid-template-columns: 1fr; gap: 38px; } .hero h1, :lang(ru) .hero h1 { font-size: clamp(38px, 8.4vw, 50px); }
 .hero-cta .btn { padding-inline: 16px; font-size: 13px; } .hero .lead { font-size: 16px; }
 .release-note { margin-top: 20px; } .trust { font-size: 10px; gap: 5px 10px; }
 section { padding-block: 42px; } .section-head { margin-bottom: 26px; } h2 { font-size: 32px; }
 .privacy-box { padding: 22px; gap: 14px; } .privacy-box h2 { font-size: 27px; } .privacy-copy { grid-column: 1 / -1; }
 .foot-inner { display: block; } .foot-links { margin-top: 20px; }
 .final h2 { font-size: 30px; }
}
@media (max-width: 380px) { .steps { grid-template-columns: 1fr; gap: 24px; } .lang-select { max-width: 91px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
    /* ---------- public growth trajectory ---------- */
    #growth { border-top: 1px solid var(--glass-border); scroll-margin-top: 68px; }
    .growth-intro { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 48px; align-items: end; }
    .growth-intro .section-head { margin-bottom: 0; }
    .growth-disclosure { max-width: 46ch; padding: 0 0 5px 18px; border-left: 1px solid var(--glass-border-strong); color: var(--text-muted); font-size: 12.5px; line-height: 1.7; }
    .growth-disclosure strong { color: var(--text-secondary); font-weight: 700; }
    .growth-kpis { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 30px; border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border); }
    .growth-kpi { min-width: 0; padding: 18px 20px 20px; border-right: 1px solid var(--glass-border); }
    .growth-kpi:last-child { border-right: 0; }
    .growth-kpi span { display: block; color: var(--text-muted); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
    .growth-kpi strong { display: block; margin-top: 5px; font-size: clamp(23px, 3vw, 32px); line-height: 1.1; letter-spacing: -1.2px; font-variant-numeric: tabular-nums; }
    .growth-kpi small { display: block; margin-top: 7px; color: var(--text-muted); font-size: 11px; line-height: 1.45; }
    .growth-panel { margin-top: 26px; padding: 22px 22px 18px; border: 1px solid var(--glass-border); border-radius: 16px; background: rgba(255,255,255,.018); }
    :root[data-theme="light"] .growth-panel { background: rgba(255,255,255,.34); }
    .growth-toolbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
    .growth-toolbar h3 { font-size: 15px; font-weight: 700; }
    .growth-toolbar p { margin-top: 3px; color: var(--text-muted); font-size: 11.5px; }
    .horizon-switch { display: inline-flex; flex: none; padding: 3px; border: 1px solid var(--glass-border); border-radius: 9px; }
    .horizon-switch button, .model-toggle { appearance: none; border: 0; color: var(--text-muted); background: transparent; font: inherit; cursor: pointer; transition: color .2s, background .2s, transform .1s; }
    .horizon-switch button { padding: 7px 11px; border-radius: 6px; font-size: 11.5px; font-weight: 700; }
    .horizon-switch button[aria-pressed="true"] { color: var(--text-primary); background: var(--glass-bg-2); }
    .horizon-switch button:active, .model-toggle:active { transform: scale(.97); }
    .growth-chart-wrap { position: relative; min-height: 360px; }
    #growthChart { display: block; width: 100%; height: auto; overflow: visible; }
    .chart-grid { stroke: var(--glass-border); stroke-width: 1; vector-effect: non-scaling-stroke; }
    .chart-axis-label { fill: var(--text-muted); font: 11px "Manrope", sans-serif; }
    .chart-history, .chart-ensemble, .chart-model { fill: none; vector-effect: non-scaling-stroke; stroke-linecap: round; stroke-linejoin: round; }
    .chart-history { stroke: var(--text-primary); stroke-width: 2.3; }
    .chart-ensemble { stroke: var(--accent); stroke-width: 2.5; }
    .chart-model { stroke: var(--text-secondary); stroke-width: 1.35; opacity: .58; }
    .chart-model[data-model="power"] { stroke-dasharray: 7 5; }
    .chart-model[data-model="gompertz"] { stroke-dasharray: 2 5; }
    .chart-band { fill: var(--accent); opacity: .1; }
    .chart-divider { stroke: var(--glass-border-strong); stroke-width: 1; stroke-dasharray: 4 5; vector-effect: non-scaling-stroke; }
    .chart-now-dot { fill: var(--accent); stroke: var(--text-primary); stroke-width: 2; vector-effect: non-scaling-stroke; }
    .growth-legend { display: flex; flex-wrap: wrap; gap: 7px 16px; margin-top: 8px; }
    .legend-item, .model-toggle { display: inline-flex; align-items: center; gap: 7px; color: var(--text-muted); font-size: 11.5px; }
    .legend-line { width: 20px; height: 2px; background: var(--text-primary); }
    .legend-line.forecast { background: var(--accent); }
    .legend-band { width: 20px; height: 9px; background: var(--accent-glow); border: 1px solid var(--accent); opacity: .7; }
    .model-toggle { padding: 3px 0; }
    .model-toggle::before { content: ""; width: 16px; height: 0; border-top: 1px dashed var(--text-muted); }
    .model-toggle[aria-pressed="true"] { color: var(--text-primary); }
    .model-toggle[aria-pressed="false"] { opacity: .46; }
    .growth-methods { display: grid; grid-template-columns: repeat(3, 1fr); align-items: start; gap: 0; margin-top: 18px; border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border); }
    .growth-method { min-width: 0; border-right: 1px solid var(--glass-border); }
    .growth-method:last-child { border-right: 0; }
    .growth-method summary { display: grid; grid-template-columns: minmax(0, 1fr) 18px; align-items: center; gap: 12px; min-height: 66px; padding: 12px 16px; list-style: none; cursor: pointer; transition: background .2s; }
    .growth-method summary::-webkit-details-marker { display: none; }
    .growth-method summary:hover { background: var(--glass-bg); }
    .growth-method h3 { font-size: 13px; font-weight: 700; }
    .growth-method-simple { margin-top: 2px; overflow: hidden; color: var(--text-muted); font-size: 11.5px; line-height: 1.45; text-overflow: ellipsis; white-space: nowrap; }
    .growth-method-chevron { width: 8px; height: 8px; border-right: 1.5px solid var(--text-muted); border-bottom: 1.5px solid var(--text-muted); transform: rotate(45deg) translate(-2px, -2px); transition: transform .2s, border-color .2s; }
    .growth-method[open] .growth-method-chevron { border-color: var(--accent); transform: rotate(225deg) translate(-1px, -1px); }
    .growth-method-detail { padding: 13px 16px 16px; border-top: 1px solid var(--glass-border); animation: method-in .2s ease-out both; }
    @keyframes method-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
    .growth-formula { margin: 0 0 9px; overflow-x: auto; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11.5px; white-space: nowrap; }
    .growth-method-detail p { color: var(--text-muted); font-size: 11.5px; line-height: 1.6; }
    .growth-method-stats { margin-top: 8px; }
    .growth-method strong { color: var(--text-secondary); font-variant-numeric: tabular-nums; }
    .growth-note { margin: 12px 0 0; color: var(--text-muted); font-size: 11.5px; line-height: 1.65; }
    .growth-error { display: none; padding: 38px 20px; color: var(--text-secondary); text-align: center; }

/* Product imagery, data reference and progressive disclosure. */
.product-preview { margin: 0; }
.product-stage { position: relative; min-height: 524px; border: 1px solid var(--glass-border); border-radius: 18px; background: var(--surface); padding: 46px 28px 28px; display: flex; justify-content: center; }
.stage-label { position: absolute; top: 17px; left: 24px; font-size: 9px; font-weight: 700; letter-spacing: .14em; color: var(--text-muted); }
.product-window { width: 263px; overflow: hidden; border-radius: 12px; border: 1px solid var(--glass-border-strong); box-shadow: 0 18px 34px #00000024; }
.product-window img { display: block; width: 100%; height: auto; }
.product-light, [data-theme="light"] .product-dark { display: none !important; }
[data-theme="light"] .product-light { display: block !important; }
.output-slip { position: absolute; bottom: 26px; right: -13px; display: flex; align-items: center; gap: 13px; padding: 15px 18px; border-radius: 11px; border: 1px solid var(--glass-border-strong); background: var(--bg); box-shadow: 0 8px 32px #00000018; }
.output-check { display: grid; place-items: center; width: 32px; height: 38px; border-radius: 5px; color: var(--accent); background: var(--accent-glow); font-size: 22px; }
.output-slip strong { display: block; font: 500 12px ui-monospace, monospace; }
.output-slip div span { display: block; margin-top: 5px; color: var(--text-muted); font-size: 10px; }
.output-extension { font: 500 9px ui-monospace, monospace; color: var(--accent); margin-left: 8px; }
.product-preview figcaption { font-size: 10px; color: var(--text-muted); margin: 13px 4px 0; }
.data-cards { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.data-cards article { display: flex; flex-direction: column; border: 1px solid var(--glass-border); background: var(--glass-bg); border-radius: 12px; padding: 25px; }
.data-index { font: 500 10px ui-monospace, monospace; letter-spacing: .04em; color: var(--accent); }
.data-cards h3 { font-size: 22px; line-height: 1.3; letter-spacing: -.025em; margin: 24px 0 13px; }
.data-cards p { font-size: 13px; color: var(--text-secondary); margin-bottom: 24px; }
.data-fields { display: flex; flex-wrap: wrap; gap: 5px; margin-top: auto; }
.data-fields span { font: 400 10px ui-monospace, monospace; padding: 4px 7px; border-radius: 4px; color: var(--text-muted); background: var(--glass-bg-2); }
.export-controls { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; margin-top: 30px; padding: 0 4px; }
.export-controls h3 { font-size: 13px; margin-bottom: 8px; }
.export-controls p { font-size: 12px; color: var(--text-secondary); }
.editorial-note { font-size: 11px; color: var(--text-muted); border-left: 2px solid var(--glass-border-strong); padding-left: 12px; margin-top: 28px; max-width: 110ch; }
.format-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 28px; }
.format-card { border-top: 1px solid var(--glass-border-strong); padding-top: 22px; }
.format-extension { color: var(--accent); font: 500 25px ui-monospace, monospace; }
.format-card h3 { font-size: 15px; margin: 17px 0 10px; }
.format-card p { font-size: 13px; color: var(--text-secondary); }
#faq { display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; }
.faq-grid details { border-top: 1px solid var(--glass-border); }
.faq-grid details:last-child { border-bottom: 1px solid var(--glass-border); }
.faq-grid summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; list-style: none; padding: 20px 0; font-size: 14px; font-weight: 700; line-height: 1.5; }
.faq-grid summary::-webkit-details-marker, .growth-archive > summary::-webkit-details-marker { display: none; }
.faq-grid summary::after { content: '+'; font-size: 23px; font-weight: 400; color: var(--accent); flex-shrink: 0; }
.faq-grid details[open] summary::after { content: '−'; }
.faq-grid p { color: var(--text-secondary); font-size: 13px; padding: 0 30px 22px 0; }
#growth { padding-block: 0; border: 0; }
.growth-archive { border-top: 1px solid var(--glass-border); }
.growth-archive > summary { display: flex; justify-content: space-between; gap: 20px; list-style: none; padding-block: 23px; font-size: 12px; color: var(--text-secondary); }
.growth-archive > summary::after { content: '↓'; color: var(--accent); }
.growth-archive[open] > summary::after { content: '↑'; }
.archive-content { padding: 20px 0 42px; }
.growth-intro { grid-template-columns: 1.2fr .8fr; gap: 36px; }
.growth-intro h2 { font-size: 30px; }
.growth-note a { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 920px) {
 .data-cards { gap: 12px; } .data-cards article { padding: 20px; } .data-cards h3 { font-size: 20px; }
 .format-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
 #faq { gap: 32px; } .product-stage { padding-inline: 20px; } .output-slip { right: -8px; padding: 12px; }
 .growth-intro, .growth-methods { grid-template-columns: 1fr; }
 .growth-method { border-right: 0; border-bottom: 1px solid var(--glass-border); }
 .growth-kpis { grid-template-columns: 1fr 1fr; } .growth-kpi:nth-child(2) { border-right: 0; }
}
@media (max-width: 600px) {
 .product-preview { width: 100%; max-width: 400px; margin-inline: auto; }
 .product-stage { min-height: 0; padding: 45px 26px 48px; } .product-window { width: 250px; }
 .output-slip { right: 10px; bottom: 22px; } .output-extension { display: none; }
 .data-cards { grid-template-columns: 1fr; } .data-cards article { padding: 23px; } .data-cards h3 { margin-top: 16px; }
 .export-controls { grid-template-columns: 1fr; gap: 22px; } .export-controls h3 { margin-bottom: 5px; }
 #faq { display: block; } .faq-grid summary { font-size: 14px; }
 .growth-toolbar { align-items: stretch; flex-direction: column; gap: 12px; }
 .growth-chart-wrap { overflow-x: auto; } #growthChart { min-width: 680px; }
 .growth-panel { padding: 15px 10px; }
}
@media (max-width: 380px) { .format-grid { gap: 22px 17px; } .format-card h3 { font-size: 13px; } .format-card p { font-size: 12px; } }