:root { color-scheme: dark; font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif; color: #f1f3f4; background: #090b0d; letter-spacing: 0; }
* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; line-height: 1.65; }
a { color: #b9dcf9; text-underline-offset: 4px; }
a:hover { color: #fff; }
a:focus-visible, summary:focus-visible { outline: 2px solid #f1f3f4; outline-offset: 5px; }
svg { width: 20px; height: 20px; flex: 0 0 20px; }
.site-header, main, footer { max-width: 1120px; margin: auto; }
.site-header { min-height: 96px; padding: 22px 32px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid #303438; }
.brand { display: flex; gap: 14px; align-items: center; color: #f1f3f4; text-decoration: none; font-size: 15px; font-weight: 700; line-height: 1.3; }
.brand img { object-fit: contain; flex: 0 0 44px; }
.brand small { display: block; font-size: 11px; font-weight: 400; color: #a7adb4; margin-top: 6px; }
.back-link { display: flex; gap: 8px; align-items: center; font-size: 13px; white-space: nowrap; }
.intro { padding: 46px 32px 38px; border-bottom: 1px solid #303438; }
.eyebrow { margin: 0 0 12px; color: #a9b0b8; font-size: 12px; font-weight: 650; }
h1 { font-size: 38px; line-height: 1.18; font-weight: 650; margin: 0; }
.lead { max-width: 670px; color: #c1c7cd; font-size: 18px; margin: 18px 0 24px; }
.requirements { display: flex; gap: 12px 26px; flex-wrap: wrap; font-size: 13px; color: #d4d8dc; }
.requirements span { display: flex; gap: 9px; align-items: center; }
.release-note { max-width: 780px; margin: 24px 0; color: #aeb6bd; font-size: 14px; }
.release-note strong { color: #f1f3f4; }
.primary-action { display: inline-flex; gap: 12px; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; background: #eff2f5; border-radius: 5px; color: #101418; font-weight: 650; text-decoration: none; }
.primary-action:hover { background: #fff; color: #101418; }
.guide-layout { display: grid; grid-template-columns: 232px minmax(0, 1fr); gap: 42px; padding: 0 32px; }
.contents { align-self: start; position: sticky; top: 28px; display: grid; padding: 34px 0; gap: 8px; }
.contents strong { font-size: 11px; color: #949da6; margin-bottom: 12px; }
.contents a { text-decoration: none; color: #b5bec7; font-size: 13px; padding: 6px 0; min-height: 34px; }
.contents a:hover { color: #fff; }
.guide-body { min-width: 0; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps > li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 17px; padding: 34px 0; border-bottom: 1px solid #303438; }
.step-number { color: #949da6; font-size: 14px; padding-top: 3px; }
h2 { font-size: 22px; line-height: 1.3; font-weight: 600; margin: 0 0 15px; overflow-wrap: anywhere; }
p { margin: 12px 0; }
.steps p, .substeps { color: #c3c9cf; font-size: 15px; }
.steps p.secondary { color: #929da7; font-size: 14px; }
.substeps { padding-left: 22px; }
.substeps li { padding: 4px 0 4px 5px; }
.privacy-note { display: flex; gap: 10px; align-items: start; }
.privacy-note svg { margin-top: 4px; color: #96cbb6; }
code { font-family: ui-monospace, monospace; color: #e3e7ea; }
.help { padding: 34px 0; }
.renewal { padding: 34px 0; border-bottom: 1px solid #303438; }
.renewal p { font-size: 15px; color: #c3c9cf; }
.renewal .eyebrow { font-size: 12px; color: #a9b0b8; }
.renewal .secondary { font-size: 14px; color: #929da7; }
.help h2 { font-size: 26px; }
details { border-bottom: 1px solid #303438; }
summary { display: flex; align-items: center; gap: 18px; justify-content: space-between; padding: 18px 0; cursor: pointer; list-style: none; font-size: 15px; }
summary::-webkit-details-marker { display: none; }
summary svg { color: #9aa5ae; }
details[open] summary svg { transform: rotate(45deg); }
details p, details > a { color: #aeb7c0; font-size: 14px; display: block; margin: 0 0 20px; }
.support { padding: 26px 0; display: flex; align-items: start; gap: 16px; border-top: 1px solid #303438; border-bottom: 1px solid #303438; }
.support > svg { margin-top: 5px; }
.support h2 { font-size: 20px; margin-bottom: 8px; }
.support p { font-size: 14px; color: #aeb7c0; }
.support a { font-size: 14px; }
.sources { display: grid; gap: 7px; padding: 28px 0 42px; color: #8d99a4; font-size: 12px; }
.sources strong { font-weight: 500; color: #aeb7c0; margin-bottom: 4px; }
footer { border-top: 1px solid #303438; padding: 24px 32px; display: flex; justify-content: space-between; gap: 18px; font-size: 11px; color: #89959f; }
.skip-link { position: absolute; top: -70px; left: 16px; z-index: 2; padding: 12px; background: #fff; color: #000; }
.skip-link:focus { top: 10px; }
@media (max-width: 760px) { .site-header { padding: 18px 20px; } .intro { padding: 32px 20px; } h1 { font-size: 30px; } .lead { font-size: 17px; } .guide-layout { display: block; padding: 0 20px; } .contents { position: static; grid-template-columns: 1fr 1fr; gap: 4px 18px; padding: 24px 0; border-bottom: 1px solid #303438; } .contents strong { grid-column: 1 / -1; margin-bottom: 6px; } .contents a { min-height: 44px; display: flex; align-items: center; } .steps > li { padding: 28px 0; gap: 12px; grid-template-columns: 27px minmax(0, 1fr); } h2 { font-size: 21px; } footer { padding: 22px 20px; flex-wrap: wrap; } }
@media (max-width: 380px) { .back-link span { display: none; } .back-link { min-height: 44px; min-width: 44px; justify-content: center; } .primary-action { width: 100%; padding-inline: 12px; } .brand { font-size: 13px; } }