:root {
    color-scheme: light;
    --text: #141b26;
    --muted: #596779;
    --blue: #006fc4;
    --line: #e0e5eb;
    --tint: #eff7fd;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
    margin: 0;
    background: #fff;
    color: var(--text);
    font-family: "Segoe UI", system-ui, sans-serif;
    line-height: 1.65;
}
a { color: inherit; text-underline-offset: 4px; }
a:hover { color: var(--blue); }
a:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
.wrap { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner, .site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding-block: 26px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 21px;
    font-weight: 650;
    letter-spacing: -.5px;
    text-decoration: none;
    white-space: nowrap;
}
.brand-logo {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    /* Align the visible circle with the text rather than its line box. */
    transform: translateY(.1em);
}
nav { display: flex; align-items: center; gap: 32px; font-size: 14px; }
nav a { text-decoration: none; color: var(--muted); }
.button {
    display: inline-block;
    min-width: 180px;
    padding: 13px 28px;
    border: 1px solid var(--blue);
    border-radius: 4px;
    background: var(--blue);
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
}
.button:hover { background: #005b9f; border-color: #005b9f; color: #fff; }
.button-small { min-width: 0; padding: 9px 22px; font-size: 14px; }
.hero { text-align: center; padding-block: 78px 50px; }
h1 {
    margin: 0 0 25px;
    font-size: clamp(36px, 4.8vw, 64px);
    font-weight: 650;
    letter-spacing: -2.3px;
    line-height: 1.12;
}
p { color: var(--muted); margin: 0; }
.intro { max-width: 810px; margin: 0 auto 32px; font-size: 19px; }
.requirements { margin-top: 17px; font-size: 13px; }
.product-stage { background: var(--tint); padding: 50px 60px; border-radius: 12px; }
.product-stage a { display: block; }
img { display: block; max-width: 100%; height: auto; }
.product-stage img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 12px 30px #142b4626;
}
.features { display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 64px 80px; }
.features article { padding-inline: 30px; }
.features article:first-child { padding-left: 0; }
.features article:last-child { padding-right: 0; }
.features article + article { border-left: 1px solid var(--line); }
.features h2 { font-size: 19px; letter-spacing: -.4px; margin: 0 0 12px; line-height: 1.4; }
.features p { font-size: 16px; }
.download { text-align: center; background: var(--tint); padding-block: 64px; }
.download h2 { font-size: clamp(25px, 3vw, 34px); line-height: 1.25; letter-spacing: -.8px; margin: 0 0 30px; }
.download-actions { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.secondary-link { color: var(--muted); font-size: 12px; }
.site-footer { margin-top: 34px; border-top: 1px solid var(--line); padding-block: 27px 38px; }
.site-footer .brand { font-size: 15px; }
.site-footer .brand-logo { width: 24px; height: 24px; }

.site-footer p { font-size: 12px; }
.site-footer p a { text-decoration: none; }
.skip-link { position: absolute; top: -100px; left: 16px; background: #fff; padding: 12px; z-index: 2; }
.skip-link:focus { top: 10px; }
.guide { padding-block: 65px; }
.guide > h1 { font-size: clamp(36px, 4vw, 52px); }
.guide h2 { font-size: 27px; line-height: 1.3; letter-spacing: -.6px; margin: 0 0 18px; }
.walkthrough { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; margin-top: 60px; }
.screenshot img { border-radius: 8px; box-shadow: 0 8px 24px #142b461c; }
.extras { display: grid; grid-template-columns: 1fr 1fr; gap: 65px; margin-top: 70px; }
.extras article { border-top: 1px solid var(--line); padding-top: 30px; }
.extras img { max-height: 350px; width: auto; margin-top: 25px; border-radius: 6px; }
@media (max-width: 800px) {
    .brand { font-size: 18px; }
    nav { gap: 20px; }
    .hero { padding-top: 60px; }
    .product-stage { padding: 30px; }
    .features article { padding-inline: 20px; }
    .walkthrough { gap: 35px; }
}
@media (max-width: 600px) {
    .wrap { width: calc(100% - 36px); }
    .header-inner { flex-wrap: wrap; gap: 20px; padding-block: 20px; }
    nav { width: 100%; justify-content: space-between; }
    .hero { padding-block: 44px 32px; }
    h1 { letter-spacing: -1.2px; }
    .intro { font-size: 17px; }
    .product-stage { padding: 15px; border-radius: 7px; }
    .features { grid-template-columns: 1fr; padding-block: 28px 40px; }
    .features article, .features article:first-child, .features article:last-child { padding: 22px 0; }
    .features article + article { border-left: 0; border-top: 1px solid var(--line); }
    .download { padding-block: 44px; }
    .site-footer { flex-direction: column; align-items: flex-start; gap: 20px; }
    .walkthrough, .extras { grid-template-columns: 1fr; gap: 28px; margin-top: 40px; }
    .guide { padding-block: 40px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

/* Usage guide: readable sections and an in-page contents list. */
.guide-intro { max-width: 760px; font-size: 18px; }
.guide-contents {
    display: block;
    margin-top: 32px;
    padding: 24px 28px;
    background: var(--tint);
    border-radius: 6px;
}
.guide .guide-contents h2 { font-size: 19px; margin-bottom: 12px; }
.guide-contents ul { margin: 0; padding-left: 20px; columns: 2; column-gap: 40px; }
.guide-contents li { break-inside: avoid; padding-block: 5px; }
.guide-contents a { color: var(--blue); text-decoration: underline; }
.guide-section { margin-top: 48px; padding-top: 36px; border-top: 1px solid var(--line); }
.guide-section > p { max-width: 850px; }
.guide-section p + p { margin-top: 16px; }
.guide-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; margin-top: 24px; }
.guide-row > * { min-width: 0; }
.guide-row-small { grid-template-columns: 1.4fr .6fr; }
.guide-row-small img { max-height: 420px; width: auto; margin-inline: auto; }
.guide-section ul, .guide-section ol { padding-left: 23px; color: var(--muted); margin: 0 0 20px; }
.guide-section li + li { margin-top: 12px; }
.action-list { margin: 0 0 22px; }
.action-list dt { font-weight: 600; margin-bottom: 6px; }
.action-list dd { color: var(--muted); margin: 0 0 18px; }
.troubleshooting h3 { font-size: 20px; line-height: 1.4; margin: 28px 0 10px; }
@media (max-width: 800px) {
    .guide-row { grid-template-columns: 1fr; gap: 24px; }
    .guide-row-small img { margin-inline: 0; }
}
@media (max-width: 600px) {
    .guide-contents { padding: 20px; }
    .guide-contents ul { columns: 1; }
    .guide-section { margin-top: 32px; padding-top: 28px; }
}