:root {
    color-scheme: dark;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--ink);
    font-synthesis: none;
    line-height: 1.6;
    letter-spacing: 0;
}
* { box-sizing: border-box; }
body, h1, h2, h3, p { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; }
a, button { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
.container { width: var(--site-content-width); margin-inline: auto; }
.surface-card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 48px; }
.skip-link { position: fixed; top: -80px; left: 20px; z-index: 10; padding: 12px; background: var(--accent); color: var(--ink); }
.skip-link:focus { top: 12px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 17px; font-weight: 650; flex-shrink: 0; }
.brand img { object-fit: contain; }
.text-link:hover { color: var(--accent); }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 14px; padding: 13px 25px; background: var(--accent); color: var(--ink); border: 1px solid var(--accent); border-radius: 5px; font-size: 15px; font-weight: 650; transition: background .2s, transform .2s; }
.button:hover { background: #ff9a42; transform: translateY(-2px); }
.hero { padding-top: 32px; }
.hero-intro { display: grid; grid-template-columns: minmax(0, 1fr) 300px; align-items: center; gap: 48px; }
.hero-copy { min-width: 0; }
.product-identity { display: flex; align-items: center; gap: 20px; }
.product-identity img { flex-shrink: 0; object-fit: contain; }
.product-details { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 26px; font-size: 13px; color: var(--muted); }
.product-details .text-link { font-size: 14px; gap: 8px; }
.hero-download { border-left: 1px solid var(--line); padding-left: 40px; }
.download-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.download-heading h2 { font-size: 16px; margin: 0; }
.download-heading > span { font-size: 12px; color: var(--muted); }
.hero-download .download-actions { flex-direction: column; align-items: stretch; gap: 16px; margin-top: 18px; }
.download-choice .button { width: 100%; justify-content: space-between; min-height: 46px; padding: 10px 16px; font-size: 15px; }
.download-choice p { margin-top: 6px; font-size: 12px; color: var(--muted); }
.download-choice strong { color: var(--text); font-weight: 500; margin-left: 6px; }
.eyebrow { font-size: 12px; font-weight: 600; color: var(--gold); }
.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 50%; background: var(--accent); vertical-align: middle; }
h1 { font-size: 40px; line-height: 1.3; font-weight: 700; margin-top: 8px; }
.hero-description { font-size: 16px; line-height: 2; color: var(--muted); margin-top: 24px; }
.hero-description strong { color: var(--text); font-weight: 500; }
.download-actions { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 28px; }
.button-secondary { background: transparent; border-color: var(--line); color: var(--text); }
.button-secondary:hover { background: #252220; border-color: var(--accent); }
.text-link { font-size: 14px; display: inline-flex; gap: 16px; align-items: center; }
.showcase { padding: 0 24px 24px; margin-top: 24px; scroll-margin-top: 24px; }
.showcase-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.showcase-number { flex-shrink: 0; color: #b9a897; font-variant-numeric: tabular-nums; font-size: 12px; }
.screenshots { width: 100%; aspect-ratio: 2880 / 1780; background: #252220; }
.screenshots img { display: block; width: 100%; height: 100%; object-fit: contain; }
.preview-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); flex: 1; max-width: 760px; min-width: 0; }
.preview-tabs button { min-height: 64px; background: none; border: 0; border-bottom: 2px solid transparent; padding: 18px 12px; color: var(--muted); cursor: pointer; font-size: 15px; transition: color .2s; }
.preview-tabs button span { color: #a28b76; font-size: 12px; margin-right: 12px; }
.preview-tabs button[aria-selected="true"] { border-bottom-color: var(--accent); color: var(--accent); }
.preview-tabs button:hover { color: var(--accent); }
.features { margin-top: 48px; }
.section-heading { text-align: center; }
h2 { font-size: 30px; line-height: 1.45; font-weight: 650; margin-top: 14px; }
.section-heading > p:not(.eyebrow) { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 18px auto 0; max-width: 680px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 28px; }
.feature { min-width: 0; padding: 28px; display: flex; flex-direction: column; align-items: flex-start; }
.feature-number { font-size: 12px; color: var(--gold); margin-bottom: 18px; }
.feature h3 { font-size: 20px; line-height: 1.6; font-weight: 650; }
.feature p { color: var(--muted); font-size: 16px; line-height: 2; margin-top: 12px; margin-bottom: 22px; }
.feature-link { display: inline-flex; align-items: center; gap: 14px; margin-top: auto; font-size: 14px; color: var(--gold); }
.feature-link:hover { color: var(--accent); }
.tool-strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px 28px; margin-top: 20px; color: var(--muted); font-size: 14px; }
.tool-strip ul { padding: 0; margin: 0; list-style: none; display: flex; justify-content: center; flex-wrap: wrap; gap: 12px 28px; color: var(--text); }
.tool-strip li::before { content: "+"; color: var(--gold); margin-right: 8px; }
.community { text-align: center; margin-top: 24px; margin-bottom: 32px; }
.community .button { margin-top: 26px; }
.text-link img { object-fit: contain; }
.site-footer { border-top: 1px solid var(--line); padding: 26px 0; }
.footer-layout { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-footer .brand { font-size: 14px; gap: 8px; }
.site-footer p { color: var(--muted); font-size: 12px; }
@media (max-width: 900px) {
    .surface-card { padding: 32px; }
    .hero-intro { grid-template-columns: minmax(0, 1fr) 240px; gap: 28px; }
    .hero-download { padding-left: 24px; }
    .product-identity { gap: 12px; }
    .product-identity img { width: 56px; height: 56px; }
    h1 { font-size: 30px; }
    .hero-copy .eyebrow { font-size: 12px; }
    .hero-description br { display: none; }
    .showcase { padding: 0 20px 20px; }
    .feature-grid { gap: 14px; }
    .feature { padding: 22px; }
    .feature h3 { font-size: 18px; }
    .tool-strip { padding: 22px; }
    .tool-strip ul { gap: 18px; }
}
@media (max-width: 640px) {
    html { scroll-padding-top: 24px; }
    .surface-card { padding: 28px 18px; }
    .brand { font-size: 14px; gap: 7px; }
    .hero { padding-top: 20px; }
    .hero-intro { grid-template-columns: 1fr; gap: 24px; }
    h1 { font-size: 28px; margin-top: 6px; }
    .product-identity img { width: 48px; height: 48px; }
    .product-identity { gap: 10px; }
    .hero-description { font-size: 14px; margin-top: 18px; }
    .product-details { gap: 12px 18px; margin-top: 18px; font-size: 12px; }
    .product-details .text-link { font-size: 14px; }
    .hero-download { border-left: 0; border-top: 1px solid var(--line); padding: 22px 0 0; }
    .hero-download .download-actions { display: grid; grid-template-columns: 1fr; gap: 16px; }
    .download-actions { flex-direction: column; gap: 12px; margin-top: 25px; }
    .download-actions .button { width: 100%; min-width: 0; }
    .download-choice .button { font-size: 15px; gap: 12px; padding-inline: 16px; }
    .showcase { margin-top: 16px; padding: 0 10px 10px; }
    .showcase-toolbar { gap: 10px; margin-bottom: 12px; }
    .showcase-number { font-size: 12px; }
    .preview-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .preview-tabs button { min-height: 48px; font-size: 14px; padding: 10px 2px; }
    .preview-tabs button span { display: none; }
    .features { margin-top: 32px; }
    h2 { font-size: 24px; }
    .section-heading > p:not(.eyebrow) { font-size: 14px; margin-top: 16px; }
    .feature-grid { grid-template-columns: 1fr; margin-top: 20px; gap: 16px; }
    .feature { padding: 24px; }
    .feature h3 { font-size: 19px; }
    .feature p { font-size: 14px; }
    .tool-strip { margin-top: 16px; flex-direction: column; text-align: center; padding: 24px; gap: 14px; }
    .tool-strip ul { gap: 12px 20px; font-size: 14px; }
    .community p br { display: none; }
    .community { margin-top: 16px; margin-bottom: 24px; }
    .footer-layout { flex-wrap: wrap; gap: 12px; }
    .site-footer .brand { width: 100%; }
    .site-footer p { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; }
}