:root {
    color-scheme: dark;
    --bg: #07090d;
    --bg-soft: #0d1118;
    --panel: #121822;
    --panel-strong: #171f2b;
    --line: rgba(255, 255, 255, .1);
    --text: #f7f8fb;
    --muted: #aeb7c6;
    --orange: #ef7b2d;
    --orange-light: #ffae68;
    --mint: #6be0b5;
    --max: 1180px;
    --radius: 24px;
    --shadow: 0 24px 80px rgba(0, 0, 0, .32);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background: radial-gradient(circle at 10% 5%, rgba(239, 123, 45, .12), transparent 28%), radial-gradient(circle at 90% 30%, rgba(107, 224, 181, .08), transparent 24%);
}
a { color: inherit; }
img { max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--mint); outline-offset: 4px; }
.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 20px; top: -80px; z-index: 1000; padding: 12px 18px; border-radius: 10px; background: var(--text); color: var(--bg); font-weight: 800; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(7, 9, 13, .86); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { display: block; width: 132px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links > a { text-decoration: none; color: var(--muted); font-size: 15px; font-weight: 700; }
.nav-links > a:hover { color: var(--text); }
.nav-links .language-link { padding: 5px 9px; border: 1px solid var(--line); border-radius: 8px; color: var(--text); }
.nav-toggle { display: none; width: 46px; height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.nav-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: var(--text); }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 24px; border: 1px solid transparent; border-radius: 15px; background: linear-gradient(135deg, var(--orange), #ff9752); color: #1c0d04; text-decoration: none; font-weight: 850; line-height: 1.1; box-shadow: 0 12px 32px rgba(239, 123, 45, .22); transition: transform .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(239, 123, 45, .28); }
.button-small { min-height: 40px; padding: 0 16px; border-radius: 11px; font-size: 14px; }
.button-quiet { background: rgba(255, 255, 255, .045); border-color: var(--line); color: var(--text); box-shadow: none; }
.text-link { color: var(--orange-light); text-decoration: none; font-weight: 800; }

.hero { position: relative; overflow: hidden; padding: 112px 0 92px; border-bottom: 1px solid var(--line); }
.hero::after { content: ""; position: absolute; inset: auto -10% -55% 35%; height: 500px; background: radial-gradient(circle, rgba(239, 123, 45, .16), transparent 67%); pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, .98fr) minmax(320px, .72fr); align-items: center; gap: 78px; }
.hero:not(.hero-home) .hero-grid { grid-template-columns: minmax(0, 820px); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--orange-light); font-size: 13px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 26px; height: 2px; background: currentColor; }
h1, h2, h3 { margin-top: 0; font-weight: 850; letter-spacing: -.035em; line-height: 1.08; }
h1 { max-width: 900px; margin-bottom: 24px; font-size: clamp(44px, 7vw, 84px); }
.hero:not(.hero-home) h1 { font-size: clamp(42px, 6vw, 72px); }
h2 { font-size: clamp(30px, 4.5vw, 52px); }
h3 { font-size: 22px; }
.hero-lead { max-width: 750px; margin: 0; color: #c8d0dc; font-size: clamp(19px, 2vw, 23px); line-height: 1.55; }
.chip-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.chip-row span { padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, .035); color: #dce2ea; font-size: 13px; font-weight: 750; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 34px; }
.availability-note { max-width: 650px; margin: 20px 0 0; color: #818c9d; font-size: 13px; line-height: 1.55; }
.hero-visual { position: relative; min-height: 460px; display: grid; place-items: center; }
.hero-visual img { position: relative; z-index: 2; width: min(100%, 400px); filter: drop-shadow(0 36px 40px rgba(0, 0, 0, .45)); }
.visual-orbit { position: absolute; border: 1px solid rgba(239, 123, 45, .3); border-radius: 50%; }
.orbit-one { width: 420px; height: 420px; }
.orbit-two { width: 320px; height: 320px; border-color: rgba(107, 224, 181, .22); }
.history-pill { position: absolute; z-index: 3; right: 0; bottom: 18px; display: flex; align-items: center; gap: 12px; padding: 13px 16px; border: 1px solid var(--line); border-radius: 15px; background: rgba(13, 17, 24, .92); box-shadow: var(--shadow); }
.history-pill strong { color: var(--orange-light); font-size: 22px; }
.history-pill span { color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }

.trust-strip { border-bottom: 1px solid var(--line); background: #090c11; }
.trust-strip .shell { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #929dac; font-size: 12px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.section { padding: 104px 0; }
.section-tint { border-block: 1px solid var(--line); background: var(--bg-soft); }
.section-heading { max-width: 760px; margin-bottom: 48px; }
.section-heading h2 { margin-bottom: 18px; }
.section-heading > p:last-child, .editorial-grid p, .split-panel p, .history-grid p, .source-panel > p, .guide-card p, .feature-card p, .contact-grid p { color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card { min-height: 272px; padding: 28px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .018)); text-decoration: none; transition: border-color .2s ease, transform .2s ease, background .2s ease; }
.feature-card:hover { transform: translateY(-4px); border-color: rgba(239, 123, 45, .46); background: linear-gradient(145deg, rgba(239, 123, 45, .08), rgba(255, 255, 255, .025)); }
.feature-icon { display: grid; width: 46px; height: 46px; margin-bottom: 28px; place-items: center; border: 1px solid rgba(239, 123, 45, .28); border-radius: 13px; background: rgba(239, 123, 45, .08); color: var(--orange-light); font-size: 22px; font-weight: 700; }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { min-height: 78px; margin-bottom: 24px; font-size: 15px; line-height: 1.6; }
.feature-card .text-link { font-size: 14px; }
.editorial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.editorial-grid article { padding: 34px; border-top: 2px solid var(--orange); border-radius: 0 0 20px 20px; background: var(--panel); }
.editorial-grid h2 { margin-bottom: 16px; font-size: 29px; }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; padding: 52px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.check-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: 14px 12px 14px 40px; border-bottom: 1px solid var(--line); color: #dce2ea; font-weight: 700; }
.check-list li::before { content: "✓"; position: absolute; left: 8px; color: var(--mint); }
.history-section { background: linear-gradient(120deg, #10151d, #0a0d12); }
.history-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; align-items: center; }
.history-year { color: var(--text); font-size: clamp(42px, 8vw, 96px); font-weight: 900; letter-spacing: -.07em; line-height: .9; }
.history-year span { margin: 0 12px; color: var(--orange); }
.source-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; padding: 46px; border: 1px solid var(--line); border-radius: var(--radius); }
.source-panel h2 { margin-bottom: 0; }
.source-panel > p { margin: 0; font-size: 19px; }
.final-cta { padding: 74px; border: 1px solid rgba(239, 123, 45, .24); border-radius: 30px; background: radial-gradient(circle at 80% 10%, rgba(239, 123, 45, .18), transparent 35%), var(--panel); text-align: center; box-shadow: var(--shadow); }
.final-cta .eyebrow { justify-content: center; }
.final-cta p { max-width: 680px; margin: -8px auto 28px; color: var(--muted); }
.final-cta .hero-actions { justify-content: center; }

.download-card { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; padding: 44px; border: 1px solid rgba(239, 123, 45, .28); border-radius: var(--radius); background: var(--panel); }
.download-card h2 { margin-bottom: 8px; }
.download-card p { margin-bottom: 0; color: var(--muted); }
.download-actions, .side-actions { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }
.steps-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; }
.steps { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 44px 1fr; align-items: center; gap: 16px; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.steps li > span { display: grid; width: 40px; height: 40px; place-items: center; border-radius: 12px; background: rgba(239, 123, 45, .12); color: var(--orange-light); font-weight: 900; }
.steps li p { margin: 0; }
.gold-panel { background: radial-gradient(circle at 80% 0, rgba(239, 123, 45, .16), transparent 45%), var(--panel); }

.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.guide-card { display: block; min-height: 320px; padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); text-decoration: none; }
.guide-card:hover { border-color: rgba(239, 123, 45, .45); }
.guide-card h2 { font-size: 34px; }
.faq-list { max-width: 900px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 24px 48px 24px 0; cursor: pointer; font-size: 20px; font-weight: 800; }
.faq-list p { max-width: 760px; margin: -4px 0 24px; color: var(--muted); }
.changelog-layout { display: grid; grid-template-columns: 220px minmax(0, 760px); gap: 64px; align-items: start; }
.changelog-layout aside { position: sticky; top: 110px; display: grid; gap: 14px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.changelog-layout aside p { margin: 0; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .1em; }
.changelog-layout aside strong { font-size: 34px; }
.changelog-content > b { display: block; margin-top: 44px; color: var(--text); font-size: 27px; }
.changelog-content > b:first-child { margin-top: 0; }
.changelog-content ul { padding-left: 22px; color: var(--muted); }
.changelog-content li { margin: 8px 0; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.contact-grid article { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.contact-action { grid-column: 1 / -1; text-align: center; }
.contact-action h2 { font-size: clamp(28px, 5vw, 56px); }

.site-footer { padding: 72px 0 28px; border-top: 1px solid var(--line); background: #05070a; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 52px; }
.footer-brand img { width: 132px; }
.footer-brand p, .footer-bottom p { color: #778293; font-size: 13px; }
.footer-grid h2 { margin-bottom: 18px; color: #818b99; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.footer-grid > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { color: #c8d0da; text-decoration: none; font-size: 14px; }
.footer-grid a:hover { color: var(--orange-light); }
.footer-bottom { margin-top: 54px; padding-top: 22px; border-top: 1px solid var(--line); }
.mobile-download { display: none; }

@media (max-width: 980px) {
    .nav-toggle { display: block; }
    .nav-links { position: absolute; inset: 76px 20px auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: #0d1118; box-shadow: var(--shadow); }
    .nav-links.is-open { display: flex; }
    .nav-links > a { padding: 13px 12px; }
    .nav-links .button { margin-top: 8px; }
    .hero { padding: 76px 0 64px; }
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-visual { min-height: 370px; }
    .hero-visual img { width: 330px; }
    .orbit-one { width: 350px; height: 350px; }
    .orbit-two { width: 270px; height: 270px; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .editorial-grid { grid-template-columns: 1fr; }
    .split-panel, .history-grid, .source-panel, .steps-grid { grid-template-columns: 1fr; gap: 38px; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    body { font-size: 16px; padding-bottom: 70px; }
    .shell { width: min(calc(100% - 28px), var(--max)); }
    .nav { min-height: 68px; }
    .nav-links { top: 68px; inset-inline: 14px; }
    .brand img { width: 116px; }
    .hero { padding: 58px 0 52px; }
    h1 { font-size: clamp(42px, 13vw, 62px); }
    .hero-lead { font-size: 18px; }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .hero-actions .button { width: 100%; }
    .hero-visual { min-height: 310px; }
    .hero-visual img { width: 280px; }
    .orbit-one { width: 292px; height: 292px; }
    .orbit-two { width: 230px; height: 230px; }
    .history-pill { right: 4px; bottom: 0; }
    .trust-strip .shell { min-height: auto; padding: 18px 0; flex-wrap: wrap; justify-content: flex-start; gap: 12px 20px; }
    .section { padding: 72px 0; }
    .feature-grid, .guide-grid, .contact-grid { grid-template-columns: 1fr; }
    .feature-card { min-height: 0; }
    .feature-card p { min-height: 0; }
    .split-panel, .final-cta, .source-panel, .download-card, .guide-card, .contact-grid article { padding: 28px; }
    .download-card { grid-template-columns: 1fr; }
    .history-year { font-size: 50px; }
    .changelog-layout { grid-template-columns: 1fr; gap: 40px; }
    .changelog-layout aside { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .contact-action { grid-column: auto; }
    .mobile-download { position: fixed; z-index: 90; display: flex; inset: auto 10px 10px; min-height: 52px; align-items: center; justify-content: center; border-radius: 14px; background: var(--orange); color: #1c0d04; text-decoration: none; font-weight: 900; box-shadow: 0 12px 34px rgba(0, 0, 0, .5); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}