/* Оформление презентации в HTML-контенте статьи. Все правила ограничены её обёрткой. */
.content .presentation {
    /* Основные цвета наследуются из палитры сайта в tags.css. */
    --presentation-primary: var(--color-design-blue, #336699);
    --presentation-deep: var(--color-logo-description, #113b63);
    --presentation-accent-light: #f5b494;
    --presentation-accent-ink: var(--color-b-header, #994015);
    --presentation-warm-surface: #fffaf6;
    --presentation-warm-line: #efc8b1;
    --presentation-ink: var(--color-secondary-link, #113b63);
    --presentation-muted: #586b7e;
    --presentation-accent: var(--color-logo, #ec7942);
    --presentation-line: #d6e1ec;
    --presentation-anchor-offset: 84px;
    isolation: isolate;
    color: var(--presentation-ink);
    font: 1.6rem/1.65 Arial, Helvetica, sans-serif;
    overflow-wrap: break-word;
}

.content .presentation *,
.content .presentation *::before,
.content .presentation *::after { box-sizing: border-box; }

.content .presentation :where(section, p, ul, ol, li, figure, h2, h3) { margin: 0; padding: 0; }
.content .presentation section { font-size: inherit; scroll-margin-top: var(--presentation-anchor-offset); background-color: transparent; }
.content .presentation section > :not(h2, h3) { margin-left: 0; width: auto; }
.content .presentation section > :first-child { margin-bottom: 0; }
.content .presentation h2 { color: inherit; font-size: 4.4rem; line-height: 1.12; letter-spacing: -1.5px; font-weight: 700; text-wrap: balance; }
.content .presentation h3 { color: inherit; font-size: 2.4rem; line-height: 1.3; letter-spacing: -.5px; font-weight: 700; }
.content .presentation p { margin: 0; }
.content .presentation a { color: inherit; text-underline-offset: 4px; }
.content .presentation button { font: inherit; cursor: pointer; }
.content .presentation :focus-visible { outline: 3px solid var(--presentation-primary); outline-offset: 5px; }
.content .presentation :is(.presentation-hero, .presentation-lightbox) :focus-visible { outline-color: var(--presentation-accent-light); }
.content .presentation img { outline: none; }
.content .presentation .presentation-icon { width: 22px; height: 22px; flex: 0 0 22px; vertical-align: middle; }
.content .presentation .presentation-eyebrow { display: flex; align-items: center; gap: 10px; font-size: 1.3rem; line-height: 1.6; text-transform: uppercase; letter-spacing: 1.8px; font-weight: 700; }
.content .presentation .presentation-status-dot { display: inline-block; width: 7px; height: 7px; flex: 0 0 7px; border-radius: 50%; background: var(--presentation-accent); box-shadow: 0 0 0 5px #ec794212; }

/* Первый экран: модульная схема собрана из векторной графики и CSS. */
.content .presentation .presentation-hero {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    align-items: center;
    gap: 28px;
    padding: 66px 48px 58px;
    overflow: hidden;
    border-radius: 18px;
    color: #f4f8ff;
    background: radial-gradient(ellipse at 85% 35%, #336699a6, transparent 60%), var(--presentation-deep);
}
.content .presentation .presentation-hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(#ffffff03 1px, transparent 1px), linear-gradient(90deg, #ffffff03 1px, transparent 1px); background-size: 40px 40px; mask-image: linear-gradient(90deg, transparent, #000); }
.content .presentation .presentation-hero-copy { position: relative; z-index: 1; min-width: 0; }
.content .presentation .presentation-hero .presentation-eyebrow { color: #c1d5e9; }
.content .presentation .presentation-hero h2 { margin: 30px 0 22px; font-size: clamp(4.8rem, 4.2vw, 6rem); line-height: 1.05; letter-spacing: -2.6px; text-wrap: initial; }
.content .presentation .presentation-hero h2 > span { color: var(--presentation-accent-light); }
.content .presentation .presentation-lead { max-width: 450px; color: #cedceb; font-size: 1.7rem; line-height: 1.7; }
.content .presentation .presentation-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.content .presentation .presentation-button { display: inline-flex; justify-content: center; align-items: center; gap: 16px; min-height: 50px; padding: 13px 20px; border: 1px solid transparent; border-radius: 8px; background: var(--presentation-accent); color: #102c49; text-decoration: none; font-size: 1.5rem; line-height: 1.4; font-weight: 700; transition: background .2s, transform .2s, box-shadow .2s; }
.content .presentation .presentation-button:hover { background: #f59c71; transform: translateY(-2px); box-shadow: 0 7px 24px #113b6324; }
.content .presentation .presentation-button:active { transform: translateY(0); box-shadow: none; }
.content .presentation .presentation-button-ghost { background: transparent; border-color: #ffffff35; color: #f4f8ff; }
.content .presentation .presentation-button-ghost:hover { background: #ffffff0c; }
.content .presentation .presentation-hero-footnote { margin-top: 25px; color: #b0c6dd; font-size: 1.4rem; }
.content .presentation .presentation-hero-footnote strong { font-weight: 400; color: #eaf3fd; }
.content .presentation .presentation-system { position: relative; height: 430px; min-width: 0; }
.content .presentation .presentation-system-label { position: absolute; inset: 0 0 auto; display: flex; justify-content: space-between; font-size: 1.2rem; text-transform: uppercase; letter-spacing: 1.7px; color: #adc5df; }
.content .presentation .presentation-connections { position: absolute; inset: 10px 0 0; width: 100%; height: calc(100% - 30px); color: #81a7cc70; }
.content .presentation .presentation-orbit { position: absolute; top: 50%; left: 50%; border: 1px solid #81a7cc40; border-radius: 50%; transform: translate(-50%, -50%); }
.content .presentation .presentation-orbit-outer { width: 340px; height: 340px; }
.content .presentation .presentation-orbit-inner { width: 250px; height: 250px; border-style: dashed; }
.content .presentation .presentation-core { position: absolute; top: 50%; left: 50%; width: 142px; height: 142px; display: flex; flex-direction: column; align-items: center; justify-content: center; transform: translate(-50%, -50%) rotate(-7deg); border: 1px solid #b7d1eb66; border-radius: 32px; background: linear-gradient(140deg, #395773, #183f65); box-shadow: 0 0 80px #669acc26, 0 28px 50px #071d3566; }
.content .presentation .presentation-core-mark { color: #fff; font-size: 6.7rem; font-weight: 700; line-height: 1; letter-spacing: -5px; }
.content .presentation .presentation-core-mark > span { color: var(--presentation-accent); }
.content .presentation .presentation-core > strong { margin-top: 4px; font-size: 1.1rem; letter-spacing: 2px; }
.content .presentation .presentation-core > span:last-child { margin-top: 2px; color: #bdd0e5; font-size: 1.1rem; }
.content .presentation .presentation-node { position: absolute; display: flex; align-items: center; gap: 10px; padding: 14px 16px; background: #21486e; border: 1px solid #81a7cc59; border-radius: 12px; box-shadow: 0 12px 24px #081f3830; font-size: 1.4rem; line-height: 1.5; }
.content .presentation .presentation-node > .presentation-icon { color: var(--presentation-accent); }
.content .presentation .presentation-node small { display: block; color: #b6cce3; font-size: 1.2rem; }
.content .presentation .presentation-node-ads { top: 62px; left: 4px; transform: rotate(-5deg); }
.content .presentation .presentation-node-ai { top: 100px; right: -5px; transform: rotate(5deg); background: var(--color-logo, #ec7942); border-color: var(--color-logo, #ec7942); color: #102c49; }
.content .presentation .presentation-node-ai small { color: #102c49; }
.content .presentation .presentation-node-ai > .presentation-icon { color: #102c49; }
.content .presentation .presentation-node-pay { left: 10px; bottom: 72px; transform: rotate(3deg); }
.content .presentation .presentation-currency { color: var(--presentation-accent); font-size: 2.4rem; line-height: 1; }
.content .presentation .presentation-node-users { bottom: 51px; right: 0; transform: rotate(-4deg); }
.content .presentation .presentation-system-bottom { flex-wrap: wrap; position: absolute; right: 0; bottom: 0; left: 0; display: flex; align-items: center; gap: 10px; font-size: 1.2rem; color: #b8cce2; }
.content .presentation .presentation-system-bottom > span:last-child { margin-left: auto; border: 1px solid #81a7cc52; border-radius: 4px; padding: 2px 6px; }

.content .presentation .presentation-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); padding: 34px 22px; background: #f5f7fa; border-radius: 0 0 14px 14px; margin: -10px 12px 0; }
.content .presentation .presentation-stats > div { display: flex; flex-direction: column; padding: 0 28px; border-right: 1px solid var(--presentation-line); }
.content .presentation .presentation-stats > div:last-child { border: 0; }
.content .presentation .presentation-stats strong { color: var(--presentation-deep); font-size: 4rem; font-weight: 700; line-height: 1.1; letter-spacing: -1.5px; }
.content .presentation .presentation-stats strong > span { font-size: 2.8rem; color: var(--presentation-primary); }
.content .presentation .presentation-stats > div > span { margin-top: 9px; font-size: 1.4rem; color: var(--presentation-muted); }

/* Навигация остаётся в пределах статьи; мобильная шапка сайта имеет свой sticky. */
.content .presentation .presentation-nav { position: sticky; top: 0; z-index: 5; margin-top: 24px; background: #ffffffed; backdrop-filter: blur(14px); }
.content .presentation .presentation-nav-links { display: flex; gap: 28px; align-items: center; padding: 12px 24px; overflow-x: auto; scrollbar-width: thin; }
.content .presentation .presentation-nav a { flex: 0 0 auto; padding: 8px 0; font-size: 1.5rem; text-decoration: none; color: var(--presentation-muted); transition: color .2s, background .2s; }
.content .presentation .presentation-nav a:hover,
.content .presentation .presentation-nav a[aria-current="location"] { color: var(--presentation-deep); text-decoration: underline; text-decoration-color: var(--presentation-primary); text-underline-offset: 8px; text-decoration-thickness: 2px; }
.content .presentation .presentation-nav .presentation-nav-price { margin-left: auto; display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 6px; background: #fff2e9; font-weight: 700; color: var(--presentation-deep); }
.content .presentation .presentation-nav .presentation-nav-price:hover,
.content .presentation .presentation-nav .presentation-nav-price[aria-current="location"] { background: #fbe5d5; color: var(--presentation-accent-ink); }
.content .presentation .presentation-nav .presentation-icon { width: 16px; height: 16px; flex-basis: 16px; }
.content .presentation .presentation-progress { display: block; appearance: none; width: 100%; height: 2px; border: 0; background: #e1e8f0; color: var(--presentation-primary); }
.content .presentation .presentation-progress::-webkit-progress-bar { background: #e1e8f0; }
.content .presentation .presentation-progress::-webkit-progress-value { background: var(--presentation-primary); }
.content .presentation .presentation-progress::-moz-progress-bar { background: var(--presentation-primary); }

.content .presentation .presentation-section { padding: 68px 40px; }
.content .presentation .presentation-section-heading { max-width: 740px; }
.content .presentation .presentation-section-heading .presentation-eyebrow { margin-bottom: 18px; color: var(--presentation-primary); }
.content .presentation .presentation-section-lead { max-width: 640px; margin-top: 20px; color: var(--presentation-muted); font-size: 1.6rem; }
.content .presentation .presentation-features { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 34px; }
.content .presentation .presentation-feature { padding: 30px; border: 1px solid #c1ccda; border-radius: 14px; background: #edf2f8; box-shadow: 0 6px 20px #113b630a; transition: border-color .2s, box-shadow .2s; }
.content .presentation .presentation-feature:hover { border-color: #81a7cc; box-shadow: 0 12px 30px #113b631a; }
.content .presentation .presentation-feature-world { background: linear-gradient(135deg, var(--presentation-deep), var(--presentation-primary)); border-color: var(--presentation-primary); color: #fff; }
.content .presentation .presentation-feature-ai { background: #f1e5d8; border-color: #d7c4af; }
.content .presentation .presentation-feature-control { background: #283746; border-color: #283746; color: #fff; }
.content .presentation .presentation-feature-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 20px; border: 1px solid var(--presentation-primary); border-radius: 10px; color: #fff; background: var(--presentation-primary); }
.content .presentation .presentation-card-label { margin-bottom: 10px; font-size: 1.3rem; font-weight: 700; color: #395773; }
.content .presentation .presentation-feature h3 { max-width: 380px; margin-bottom: 14px; }
.content .presentation .presentation-feature > p:not(.presentation-card-label) { color: #3c4f61; font-size: 1.6rem; }
.content .presentation .presentation-language-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.content .presentation .presentation-language-cloud > span { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid #ffffff; border-radius: 50%; background: #ffffff9c; color: #395773; font-size: 1.3rem; font-weight: 700; }
.content .presentation .presentation-language-cloud > span:first-child { background: var(--presentation-primary); color: #fff; border-color: var(--presentation-primary); }
.content .presentation .presentation-feature-facts { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--presentation-line); color: var(--presentation-muted); font-size: 1.3rem; }
.content .presentation .presentation-feature-facts strong { display: block; color: var(--presentation-deep); font-size: 2rem; }
.content .presentation .presentation-checks { display: grid; gap: 10px; margin-top: 24px; font-size: 1.5rem; }
.content .presentation .presentation-checks > span { display: flex; align-items: center; gap: 10px; }
.content .presentation .presentation-checks .presentation-icon { width: 17px; height: 17px; flex-basis: 17px; color: var(--presentation-primary); }
.content .presentation .presentation-text-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 24px; font-size: 1.4rem; font-weight: 700; color: var(--presentation-primary); text-decoration: none; }
.content .presentation .presentation-text-link:hover { text-decoration: underline; }
.content .presentation .presentation-text-link .presentation-icon { width: 18px; height: 18px; flex-basis: 18px; }
.content .presentation :is(.presentation-feature-world, .presentation-feature-control) > p:not(.presentation-card-label) { color: #e1ebf5; }
.content .presentation :is(.presentation-feature-world, .presentation-feature-control) .presentation-feature-icon { background: #ffffff17; border-color: #ffffff40; color: #fff; }
.content .presentation :is(.presentation-feature-world, .presentation-feature-control) .presentation-text-link { color: #fff; text-decoration: underline; }
.content .presentation :is(.presentation-feature-world, .presentation-feature-control) :focus-visible { outline-color: #b8d7f4; }
.content .presentation .presentation-feature-world .presentation-card-label { color: #d2e2f2; }
.content .presentation .presentation-feature-world .presentation-language-cloud > span { background: #ffffff17; border-color: #ffffff40; color: #fff; }
.content .presentation .presentation-feature-world .presentation-language-cloud > span:first-child { background: #fff; border-color: #fff; color: var(--presentation-deep); }
.content .presentation .presentation-feature-world .presentation-feature-facts { border-color: #ffffff40; color: #d2e2f2; }
.content .presentation .presentation-feature-world .presentation-feature-facts strong { color: #fff; }
.content .presentation .presentation-spec-heading { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin: 38px 0 16px; }
.content .presentation .presentation-spec-heading h3 { font-size: 1.9rem; }
.content .presentation .presentation-spec-heading > span { font-size: 1.4rem; color: var(--presentation-muted); }

/* Нативные details доступны с клавиатуры и без JavaScript. */
.content .presentation .presentation-detail { border-top: 1px solid var(--presentation-line); scroll-margin-top: var(--presentation-anchor-offset); }
.content .presentation .presentation-detail:last-child { border-bottom: 1px solid var(--presentation-line); }
.content .presentation .presentation-detail > summary { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 20px 12px; border-radius: 8px; list-style: none; cursor: pointer; transition: background .2s; }
.content .presentation .presentation-detail > summary:hover,
.content .presentation .presentation-detail[open] > summary { background: #33669909; }
.content .presentation .presentation-detail > summary::-webkit-details-marker { display: none; }
.content .presentation .presentation-detail > summary strong { font-size: 1.8rem; font-weight: 700; }
.content .presentation .presentation-detail-note { display: block; margin-top: 3px; color: var(--presentation-muted); font-size: 1.4rem; }
.content .presentation .presentation-plus { position: relative; width: 30px; height: 30px; flex: 0 0 30px; border: 1px solid var(--presentation-line); color: var(--presentation-primary); border-radius: 50%; transition: transform .2s, background .2s; }
.content .presentation .presentation-plus::before,
.content .presentation .presentation-plus::after { content: ""; position: absolute; top: 13px; left: 9px; width: 10px; height: 1px; background: currentColor; }
.content .presentation .presentation-plus::after { transform: rotate(90deg); }
.content .presentation .presentation-detail[open] .presentation-plus { transform: rotate(45deg); background: #e8f0fe; color: var(--presentation-deep); }
.content .presentation .presentation-detail > summary:hover .presentation-plus { background: #e8f0fe; }
.content .presentation .presentation-detail-body { max-width: 860px; padding: 14px 12px 28px; font-size: 1.6rem; line-height: 1.8; color: #3c536a; }
.content .presentation .presentation-detail-body > :last-child { margin-bottom: 0; }
.content .presentation .presentation-detail-body p { margin-bottom: 16px; }
.content .presentation .presentation-detail-body ul { margin: 0; padding-left: 20px; list-style: disc outside; }
.content .presentation .presentation-detail-body li { margin: 12px 0; padding-left: 5px; }
.content .presentation .presentation-detail-body li::marker { color: #669acc; }
.content .presentation .presentation-detail-body b { color: var(--presentation-ink); }
.content .presentation .presentation-detail-body h2 { margin: 12px 0 20px; font-size: 2rem; line-height: 1.4; letter-spacing: 0; text-wrap: initial; }
.content .presentation .presentation-detail-body code { background: #33669915; border-radius: 3px; padding: 1px 4px; overflow-wrap: anywhere; }

.content .presentation .presentation-income { padding: 52px 40px 36px; margin: 0 12px; background: linear-gradient(120deg, #faf9f7, #f3f3f0); color: var(--presentation-ink); border-radius: 16px; }
.content .presentation .presentation-income .presentation-eyebrow { color: var(--presentation-primary); }
.content .presentation .presentation-income h2 > span { color: var(--presentation-accent-ink); }
.content .presentation .presentation-income .presentation-section-lead { color: var(--presentation-muted); }
.content .presentation .presentation-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin: 34px 0 28px; list-style: none; }
.content .presentation .presentation-flow li { position: relative; margin: 0; padding: 0; }
.content .presentation .presentation-step-number { display: inline-grid; place-items: center; width: 36px; height: 36px; margin-bottom: 18px; border: 1px solid var(--presentation-line); background: #e8eef6; border-radius: 50%; color: var(--presentation-deep); font-size: 1.3rem; }
.content .presentation .presentation-flow li:not(:last-child)::after { content: ""; position: absolute; top: 18px; left: 50px; right: 0; height: 1px; background: linear-gradient(90deg, #81a7cc70, #81a7cc15); }
.content .presentation .presentation-flow h3 { margin-bottom: 10px; font-size: 1.9rem; letter-spacing: 0; }
.content .presentation .presentation-flow p { color: var(--presentation-muted); font-size: 1.6rem; }
.content .presentation .presentation-income-extra { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding: 22px 0; border-top: 1px solid var(--presentation-line); font-size: 1.4rem; }
.content .presentation .presentation-income-extra > span { color: var(--presentation-muted); }
.content .presentation .presentation-income-extra > strong { font-weight: 400; color: var(--presentation-ink); }
.content .presentation .presentation-income .presentation-detail { border-color: var(--presentation-line); }
.content .presentation .presentation-income .presentation-detail-note { color: var(--presentation-muted); }
.content .presentation .presentation-income .presentation-plus { border-color: var(--presentation-line); }
.content .presentation .presentation-income .presentation-detail[open] .presentation-plus,
.content .presentation .presentation-income summary:hover .presentation-plus { background: #e8f0fe; color: var(--presentation-deep); }
.content .presentation .presentation-income .presentation-detail-body { color: #3c536a; }
.content .presentation .presentation-income .presentation-detail-body b { color: var(--presentation-ink); }

.content .presentation .presentation-engineering { display: grid; grid-template-columns: 1.1fr 1fr; gap: 42px; align-items: center; margin-top: 34px; }
.content .presentation .presentation-code-window { min-width: 0; overflow: hidden; background: #142f4b; border: 1px solid #395773; border-radius: 12px; color: #cfdef0; box-shadow: 0 18px 35px #113b6314; }
.content .presentation .presentation-window-bar { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-bottom: 1px solid #ffffff10; font-size: 1.2rem; color: #acc1d8; }
.content .presentation .presentation-window-bar > span:last-child { margin-left: auto; }
.content .presentation .presentation-window-dots { display: flex; gap: 5px; }
.content .presentation .presentation-window-dots i { width: 6px; height: 6px; border-radius: 50%; background: #81a7cc; }
.content .presentation .presentation-window-dots i:first-child { background: #ec7942; }
.content .presentation .presentation-window-dots i:last-child { background: #669acc; }
.content .presentation .presentation-code-content { padding: 24px 18px; font-family: Consolas, "Liberation Mono", monospace; font-size: 1.4rem; line-height: 2.25; }
.content .presentation .presentation-code-content p { margin: 0; white-space: pre-wrap; }
.content .presentation .presentation-code-content p > span { display: inline-block; width: 25px; margin-right: 12px; color: #9bb4ce; }
.content .presentation .presentation-code-content b { color: #9ecaf4; font-weight: 400; }
.content .presentation .presentation-code-content em { color: #f5b494; font-style: normal; }
.content .presentation .presentation-code-content i { color: #9db9d7; font-style: normal; }
.content .presentation .presentation-code-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 14px 18px; background: #ffffff05; border-top: 1px solid #ffffff10; font-size: 1.2rem; color: #b3cbe5; }
.content .presentation .presentation-code-footer > span:last-child { margin-left: auto; }
.content .presentation .presentation-code-footer .presentation-icon { width: 16px; height: 16px; flex-basis: 16px; }
.content .presentation .presentation-engineering-copy { display: grid; gap: 30px; }
.content .presentation .presentation-mini-label { font-size: 1.3rem; color: var(--presentation-primary); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.content .presentation .presentation-engineering-copy h3 { margin: 8px 0 12px; font-size: 2.6rem; }
.content .presentation .presentation-engineering-copy p { color: var(--presentation-muted); font-size: 1.6rem; }
.content .presentation .presentation-stack { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 34px; }
.content .presentation .presentation-stack > span { padding: 7px 13px; border: 1px solid var(--presentation-line); border-radius: 5px; font-size: 1.3rem; font-weight: 700; color: #395773; }

.content .presentation .presentation-gallery-section { background: #f7f8fa; border-radius: 16px; }
.content .presentation .presentation-gallery-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 28px 0 22px; }
.content .presentation .presentation-gallery-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.content .presentation .presentation-gallery-filters button { padding: 10px 15px; background: transparent; border: 1px solid var(--presentation-line); border-radius: 7px; color: #395773; font-size: 1.4rem; }
.content .presentation .presentation-gallery-filters button[aria-pressed="true"] { background: var(--presentation-primary); color: #fff; border-color: var(--presentation-primary); }
.content .presentation .presentation-gallery-filters button > span { margin-left: 6px; font-size: 1.2rem; }
.content .presentation .presentation-gallery-count { font-size: 1.3rem; color: var(--presentation-muted); }
.content .presentation .presentation-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.content .presentation .presentation-shot { min-width: 0; border: 1px solid #d6e1ed; border-radius: 9px; background: #fff; overflow: hidden; transition: transform .2s, box-shadow .2s; }
.content .presentation .presentation-shot:hover { transform: translateY(-4px); box-shadow: 0 10px 24px #113b631a; }
.content .presentation .presentation-shot-link { display: block; text-decoration: none; }
.content .presentation .presentation-shot-image { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #e7edf5; border-bottom: 1px solid #dce5ef; }
.content .presentation .presentation-shot-image > img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top left; transition: transform .35s; }
.content .presentation .presentation-shot-link:hover img { transform: scale(1.04); }
.content .presentation .presentation-shot-zoom { position: absolute; right: 12px; bottom: 12px; display: grid; place-items: center; width: 34px; height: 34px; background: var(--presentation-primary); color: #fff; border-radius: 50%; }
.content .presentation .presentation-shot-zoom .presentation-icon { width: 18px; height: 18px; }
.content .presentation .presentation-shot-caption { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 13px 14px; font-size: 1.3rem; }

.content .presentation .presentation-price { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 50px; padding: 58px 40px; margin: 44px 12px 0; border-radius: 16px; background: radial-gradient(ellipse at 95% 100%, #f7e9df, transparent 70%), var(--presentation-warm-surface); }
.content .presentation .presentation-price h2 { margin: 20px 0; }
.content .presentation .presentation-price h2 > span { color: var(--presentation-accent-ink); }
.content .presentation .presentation-price-copy > p:not(.presentation-eyebrow) { max-width: 390px; font-size: 1.6rem; color: #635349; }
.content .presentation .presentation-price-includes { display: grid; gap: 10px; list-style: none; margin: 24px 0 0; font-size: 1.5rem; }
.content .presentation .presentation-price-includes li { display: flex; align-items: center; gap: 9px; margin: 0; }
.content .presentation .presentation-price-includes .presentation-icon { width: 16px; height: 16px; flex-basis: 16px; color: var(--presentation-primary); }
.content .presentation .presentation-price-card { padding: 36px 30px 28px; border: 1px solid var(--presentation-warm-line); border-radius: 12px; background: #ffffffd9; box-shadow: 0 14px 40px #99401510; }
.content .presentation .presentation-price-value { margin: 12px 0 8px; font-size: 4.8rem; line-height: 1.2; font-weight: 700; letter-spacing: -1.8px; white-space: nowrap; }
.content .presentation .presentation-price-value > span { color: var(--presentation-accent-ink); font-size: 3.6rem; }
.content .presentation .presentation-price-condition { margin-bottom: 24px; color: #635349; font-size: 1.5rem; }
.content .presentation .presentation-price-card .presentation-button { display: flex; background: var(--presentation-deep); color: #fff; }
.content .presentation .presentation-price-card .presentation-button:hover { background: #1c4d7a; }
.content .presentation .presentation-price-contact { margin-top: 14px; font-size: 1.3rem; line-height: 1.6; text-align: center; color: #635349; }
.content .presentation .presentation-business { padding: 30px 40px 0; }
.content .presentation .presentation-end { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; padding: 30px 40px; color: #60758a; font-size: 1.3rem; }
.content .presentation .presentation-end a { white-space: nowrap; text-decoration: none; }
.content .presentation .presentation-end a:hover { text-decoration: underline; }

/* Модальное окно галереи использует нативное управление фокусом и Escape. */
.content .presentation .presentation-lightbox { position: fixed; inset: 0; width: min(1280px, calc(100% - 40px)); max-width: none; max-height: calc(100dvh - 40px); margin: auto; padding: 14px; border: 1px solid #395773; border-radius: 12px; background: #122f4c; color: #f4f8ff; box-shadow: 0 25px 100px #0007; }
.content .presentation .presentation-lightbox[open] { display: flex; flex-direction: column; }
.content .presentation .presentation-lightbox:not([open]) { display: none; }
.content .presentation .presentation-lightbox::backdrop { background: #071a30e8; backdrop-filter: blur(7px); }
.content .presentation .presentation-lightbox-top,
.content .presentation .presentation-lightbox-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 1.5rem; }
.content .presentation .presentation-lightbox-top { padding: 0 0 12px 6px; }
.content .presentation .presentation-lightbox-bottom { padding-top: 12px; }
.content .presentation .presentation-lightbox button { border: 1px solid var(--presentation-primary); border-radius: 6px; padding: 8px 14px; min-height: 40px; background: var(--presentation-primary); color: #fff; font-size: 1.4rem; }
.content .presentation .presentation-lightbox button:hover { background: var(--presentation-deep); }
.content .presentation .presentation-lightbox .presentation-lightbox-close { display: grid; place-items: center; padding: 7px; width: 40px; flex: 0 0 40px; }
.content .presentation .presentation-lightbox-image { display: block; min-height: 0; width: 100%; max-height: calc(100dvh - 178px); object-fit: contain; background: #0b213a; border-radius: 4px; }
.content .presentation [hidden] { display: none; }

@media (prefers-reduced-motion: no-preference) {
    .content .presentation .presentation-hero-copy { animation: presentation-enter .7s both; }
    .content .presentation .presentation-system { animation: presentation-enter 1s .12s both; }
    .content .presentation .presentation-reveal.js-presentation-visible { animation: presentation-enter .6s both; }
    .content .presentation .presentation-orbit-inner { animation: presentation-orbit 35s linear infinite; }
}
@keyframes presentation-enter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes presentation-orbit { from { transform: translate(-50%, -50%) rotate(0); } to { transform: translate(-50%, -50%) rotate(360deg); } }

@media screen and (width <= 1000px) {
    .content .presentation .presentation-hero { padding: 44px 30px; gap: 20px; }
    .content .presentation .presentation-hero h2 { font-size: clamp(3.6rem, 4.8vw, 4.8rem); letter-spacing: -1.8px; }
    .content .presentation .presentation-node { padding: 10px 12px; font-size: 1.3rem; }
    .content .presentation .presentation-node .presentation-icon { width: 18px; height: 18px; flex-basis: 18px; }
    .content .presentation .presentation-core { width: 120px; height: 120px; }
    .content .presentation .presentation-stats > div { padding: 0 18px; }
    .content .presentation .presentation-section { padding: 52px 28px; }
    .content .presentation .presentation-feature { padding: 24px; }
    .content .presentation .presentation-nav-links { gap: 22px; padding: 12px 18px; }
    .content .presentation .presentation-engineering { gap: 24px; }
    .content .presentation .presentation-price { gap: 24px; padding: 40px 28px; }
    .content .presentation .presentation-price-card { padding: 30px 22px; }
    .content .presentation .presentation-price-value { font-size: 3.9rem; }
    .content .presentation .presentation-price-value > span { font-size: 2.8rem; }
}

@media screen and (width <= 780px) {
    .content .presentation { --presentation-anchor-offset: 76px; }
    .content .presentation h2 { font-size: 3.6rem; letter-spacing: -1px; }
    .content .presentation .presentation-hero { grid-template-columns: 1fr; padding: 36px 24px 24px; gap: 34px; }
    .content .presentation .presentation-hero h2 { font-size: clamp(3rem, 7.6vw, 5.4rem); letter-spacing: -1.5px; }
    .content .presentation .presentation-hero .presentation-eyebrow { font-size: 1.2rem; letter-spacing: 1px; }
    .content .presentation .presentation-system { width: 100%; max-width: 440px; height: 370px; margin: 0 auto; }
    .content .presentation .presentation-node { padding: 12px 14px; font-size: 1.4rem; }
    .content .presentation .presentation-node-ai { right: 0; }
    .content .presentation .presentation-node-users { bottom: 46px; }
    .content .presentation .presentation-node-pay { bottom: 80px; }
    .content .presentation .presentation-core { width: 125px; height: 125px; }
    .content .presentation .presentation-orbit-outer { width: 300px; height: 300px; }
    .content .presentation .presentation-orbit-inner { width: 210px; height: 210px; }
    .content .presentation .presentation-stats { grid-template-columns: 1fr 1fr; padding: 30px 12px 24px; gap: 24px 0; }
    .content .presentation .presentation-stats > div:nth-child(2) { border: 0; }
    .content .presentation .presentation-stats strong { font-size: 3.6rem; }
    .content .presentation .presentation-nav { position: relative; }
    .content .presentation .presentation-nav-links { flex-wrap: wrap; gap: 8px 18px; padding: 10px 12px 16px; overflow: visible; }
    .content .presentation .presentation-nav a { font-size: 1.4rem; }
    .content .presentation .presentation-section { padding: 42px 20px; }
    .content .presentation .presentation-features { gap: 14px; }
    .content .presentation .presentation-feature { padding: 22px; }
    .content .presentation .presentation-feature h3 { font-size: 2.1rem; }
    .content .presentation .presentation-income { margin: 0; padding: 36px 24px 24px; }
    .content .presentation .presentation-flow { grid-template-columns: 1fr; gap: 24px; }
    .content .presentation .presentation-flow li { padding-left: 54px; }
    .content .presentation .presentation-step-number { position: absolute; left: 0; top: 0; }
    .content .presentation .presentation-flow li:not(:last-child)::after { left: 18px; top: 46px; right: auto; bottom: -12px; width: 1px; height: auto; }
    .content .presentation .presentation-engineering { grid-template-columns: 1fr; }
    .content .presentation .presentation-engineering-copy { grid-template-columns: 1fr 1fr; gap: 22px; }
    .content .presentation .presentation-engineering-copy h3 { font-size: 2.2rem; }
    .content .presentation .presentation-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
    .content .presentation .presentation-gallery-count { display: none; }
    .content .presentation .presentation-price { grid-template-columns: 1fr; gap: 28px; margin: 32px 0 0; padding: 36px 24px; }
    .content .presentation .presentation-price-card { max-width: 440px; width: 100%; }
    .content .presentation .presentation-price-value { font-size: 4.6rem; }
    .content .presentation .presentation-business { padding: 24px 20px 0; }
    .content .presentation .presentation-end { padding: 26px 20px; font-size: 1.2rem; }
    .content .presentation .presentation-spec-heading { display: block; }
    .content .presentation .presentation-spec-heading > span { display: block; margin-top: 6px; }
}

@media screen and (width <= 480px) {
    .content .presentation .presentation-hero { padding: 30px 20px 22px; }
    .content .presentation .presentation-hero h2 { letter-spacing: -1px; }
    .content .presentation .presentation-lead { font-size: 1.6rem; }
    .content .presentation .presentation-actions { flex-direction: column; }
    .content .presentation .presentation-system { height: 420px; }
    .content .presentation .presentation-system-label { font-size: 1.1rem; letter-spacing: 1px; }
    .content .presentation .presentation-node { display: block; max-width: calc(50% - 10px); padding: 10px; font-size: 1.3rem; }
    .content .presentation .presentation-node > :is(.presentation-icon, .presentation-currency) { display: block; margin-bottom: 6px; }
    .content .presentation .presentation-node small { font-size: 1.1rem; }
    .content .presentation .presentation-node-ads { left: 0; top: 46px; }
    .content .presentation .presentation-node-ai { top: 46px; }
    .content .presentation .presentation-node-pay { left: 0; bottom: 46px; }
    .content .presentation .presentation-node-users { bottom: 46px; }
    .content .presentation .presentation-core { width: 120px; height: 120px; border-radius: 24px; }
    .content .presentation .presentation-core-mark { font-size: 5rem; }
    .content .presentation .presentation-core > strong { font-size: 1.1rem; }
    .content .presentation .presentation-core > span:last-child { font-size: 1.1rem; }
    .content .presentation .presentation-orbit-outer { width: 250px; height: 250px; }
    .content .presentation .presentation-orbit-inner { width: 170px; height: 170px; }
    .content .presentation .presentation-system-bottom { font-size: 1.1rem; gap: 8px; }
    .content .presentation .presentation-stats { margin-right: 6px; margin-left: 6px; }
    .content .presentation .presentation-stats > div { padding: 0 14px; }
    .content .presentation .presentation-stats strong { font-size: 3.1rem; }
    .content .presentation .presentation-stats > div > span { font-size: 1.4rem; }
    .content .presentation h2 { font-size: 3rem; }
    .content .presentation .presentation-section { padding: 36px 16px; }
    .content .presentation .presentation-features { grid-template-columns: 1fr; }
    .content .presentation .presentation-feature { padding: 24px; }
    .content .presentation .presentation-feature-facts { gap: 18px; }
    .content .presentation .presentation-detail > summary { gap: 12px; padding-right: 4px; padding-left: 4px; }
    .content .presentation .presentation-detail > summary strong { font-size: 1.7rem; }
    .content .presentation .presentation-detail-note { font-size: 1.4rem; }
    .content .presentation .presentation-detail-body { padding-right: 0; padding-left: 4px; font-size: 1.6rem; }
    .content .presentation .presentation-engineering-copy { grid-template-columns: 1fr; }
    .content .presentation .presentation-code-content { padding: 20px 12px; font-size: 1.3rem; }
    .content .presentation .presentation-code-content p > span { width: 18px; margin-right: 5px; }
    .content .presentation .presentation-code-footer { gap: 6px; padding: 12px; font-size: 1.1rem; }
    .content .presentation .presentation-gallery { grid-template-columns: 1fr; }
    .content .presentation .presentation-gallery-filters { gap: 5px; }
    .content .presentation .presentation-gallery-filters button { padding: 10px 12px; font-size: 1.4rem; }
    .content .presentation .presentation-price { padding: 30px 20px; }
    .content .presentation .presentation-price-card { padding: 26px 20px; }
    .content .presentation .presentation-price-value { font-size: 3.6rem; }
    .content .presentation .presentation-price-value > span { font-size: 2.6rem; }
    .content .presentation .presentation-lightbox { width: calc(100% - 16px); max-height: calc(100dvh - 16px); padding: 10px; }
    .content .presentation .presentation-lightbox-top { font-size: 1.3rem; }
    .content .presentation .presentation-lightbox-bottom { font-size: 1.3rem; }
    .content .presentation .presentation-lightbox-image { max-height: calc(100dvh - 156px); }
}

@media (prefers-reduced-motion: reduce) {
    .content .presentation *, .content .presentation *::before, .content .presentation *::after { animation: none; transition: none; }
}

@media print {
    .content .presentation .presentation-nav,
    .content .presentation .presentation-gallery-toolbar,
    .content .presentation .presentation-system,
    .content .presentation .presentation-lightbox { display: none; }
    .content .presentation .presentation-hero,
    .content .presentation .presentation-price { display: block; }
    .content .presentation .presentation-section { padding: 24px 0; }
    .content .presentation .presentation-feature,
    .content .presentation .presentation-shot { break-inside: avoid; }
}