:root {
    --bg: #101114;
    --panel: #27272b;
    --panel-2: #1f2025;
    --text: #f3f4f6;
    --muted: rgba(243, 244, 246, 0.68);
    --line: rgba(255, 255, 255, 0.12);
    --accent: #cdd2da;
    --accent-strong: #ffffff;
    --radius: 18px;
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.36);
    --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.2);
    --max: 1120px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family:
        "SF Pro Text",
        "SF Pro Display",
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        sans-serif;
    background:
        radial-gradient(circle at 30% -20%, #20232a 0%, transparent 55%),
        var(--bg);
    color: var(--text);
}

body {
    position: relative;
    line-height: 1.5;
    letter-spacing: 0.01em;
}

a {
    color: inherit;
    text-decoration: none;
}

#preload {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: #0f1114;
    z-index: 999;
    transition: opacity 320ms ease;
}

#preload img {
    animation: pulse 1.2s ease-in-out infinite;
}

#preload.hide {
    opacity: 0;
    pointer-events: none;
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(0.96);
        opacity: 0.7;
    }
    50% {
        transform: scale(1);
        opacity: 1;
    }
}

.orb {
    position: fixed;
    filter: blur(86px);
    border-radius: 999px;
    pointer-events: none;
    z-index: -1;
}

.orb-a {
    width: 420px;
    height: 420px;
    left: -140px;
    top: -110px;
    background: rgba(108, 117, 131, 0.12);
    animation: drift 16s ease-in-out infinite;
}

.orb-b {
    width: 360px;
    height: 360px;
    right: -120px;
    top: 200px;
    background: rgba(90, 98, 110, 0.1);
    animation: drift 19s ease-in-out infinite reverse;
}

@keyframes drift {
    0%,
    100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(10px, 14px);
    }
}

.site-header,
main,
.site-footer {
    width: min(calc(100% - 2.4rem), var(--max));
    margin-inline: auto;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.3rem 0 1rem;
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.98rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.94);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.site-nav > a {
    transition: color 170ms ease;
}

.site-nav > a:hover,
.site-nav > a:focus-visible {
    color: var(--text);
}

.lang-switch {
    display: inline-flex;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.15rem;
    background: rgba(255, 255, 255, 0.02);
}

.lang-btn {
    border: 0;
    background: transparent;
    color: var(--muted);
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition:
        background-color 140ms ease,
        color 140ms ease;
}

.lang-btn.active {
    color: #091015;
    background: rgba(255, 255, 255, 0.92);
}

main {
    padding: 2.6rem 0 2rem;
}

.hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 1.8rem;
    align-items: center;
    min-height: calc(100vh - 220px);
}

h1 {
    margin: 0;
    font-size: clamp(2.3rem, 6vw, 4.8rem);
    line-height: 0.98;
    letter-spacing: -0.03em;
    font-family:
        "SF Pro Display",
        "SF Pro Text",
        -apple-system,
        BlinkMacSystemFont,
        "Helvetica Neue",
        sans-serif;
}

.subtitle {
    margin: 0.75rem 0 0;
    color: var(--muted);
    font-size: clamp(1rem, 1.6vw, 1.1rem);
    max-width: 36ch;
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    margin-top: 1.2rem;
}

.download-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.82rem 0.9rem;
    box-shadow: none;
    transform: translateY(0);
    transition:
        transform 140ms ease,
        border-color 140ms ease,
        background-color 140ms ease;
}

.download-card:hover,
.download-card:focus-visible {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.055);
}

.download-card.is-disabled {
    opacity: 0.72;
}

.download-title {
    display: block;
    font-size: 0.94rem;
    font-weight: 600;
}

.download-meta {
    display: block;
    margin-top: 0.34rem;
    font-size: 0.8rem;
    color: var(--muted);
}

.release-line {
    margin: 0.82rem 0 0;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.87rem;
}

.release-line .dot {
    margin: 0 0.44rem;
    color: rgba(255, 255, 255, 0.28);
}

.hero-meta {
    margin: 0.65rem 0 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.62);
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-visual img {
    width: min(100%, 520px);
    height: auto;
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transform: none;
    transition: opacity 220ms ease;
}

.hero-visual:hover img {
    opacity: 0.95;
}

.features {
    margin-top: 3.2rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.features article {
    background: rgba(255, 255, 255, 0.018);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 14px;
    padding: 0.95rem;
}

.features h2 {
    margin: 0;
    font-size: 1rem;
}

.features p {
    margin: 0.5rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.faq,
.about {
    margin-top: 2.6rem;
    background: rgba(255, 255, 255, 0.018);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius);
    padding: 1.2rem;
}

.section-head h2 {
    margin: 0 0 0.8rem;
    font-size: 1.25rem;
}

details {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.9rem 0;
}

details:first-of-type {
    border-top: 0;
    padding-top: 0.2rem;
}

summary {
    cursor: pointer;
    font-weight: 560;
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

details p {
    margin: 0.48rem 0 0;
    color: var(--muted);
}

.about p {
    margin: 0;
    color: var(--muted);
    max-width: 74ch;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 3rem;
    padding: 1rem 0 2rem;
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.64);
}

.footer-links {
    display: inline-flex;
    gap: 0.9rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.76);
}

.footer-links a:hover {
    color: rgba(255, 255, 255, 1);
}

.noscript {
    margin: 0.8rem auto 1.8rem;
    width: min(calc(100% - 2.4rem), var(--max));
    font-size: 0.92rem;
    color: #fff;
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity 560ms ease,
        transform 560ms ease;
}

.reveal-delay {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 760ms ease 80ms,
        transform 760ms ease 80ms;
}

.reveal.in,
.reveal-delay.in {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1050px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .hero-visual {
        order: -1;
    }

    .hero-visual img {
        transform: none;
    }

    .features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .site-header {
        gap: 1rem;
        align-items: flex-start;
        flex-direction: column;
        position: static;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .site-nav {
        width: 100%;
        flex-wrap: wrap;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .site-footer {
        flex-direction: column;
        align-items: flex-start;
        margin-top: 2rem;
    }
}

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

    .reveal,
    .reveal-delay {
        opacity: 1;
        transform: none;
    }
}