/* Hallmark · shape: installation guide · genre: modern-minimal · theme: Furrow (project DESIGN.md) · job: try · draw: existing identity
 * hero: Banner · nav: edge-aligned · footer: colophon · imagery: existing app icon · signature: device choice becomes installation guide
 * axes: light/grotesk-sans/warm · posture: committed · v2.0.0 */
/* Hallmark · pre-emit critique: P4 H4 E5 S4 R4 V4 · weakest: no product capture; installation controls carry the task, original icon carries the identity. */
/* Project identity override: DESIGN.md requires native system fonts; the user explicitly requested preservation. Font catalog warnings do not apply. */
/* Hallmark · waive 77 · div.notice is a short availability notice rather than a content section · Preserve a compact alert before the installation instructions. */
@import url('./tokens.css');
@import url('./base.css');
html { scroll-behavior: smooth; }
a, button, summary { -webkit-tap-highlight-color: var(--color-accent-soft); }
a { transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out); }
a:hover { color: var(--color-focus); }
.skip { position: absolute; transform: translateY(-180%); z-index: 20; padding: 12px 20px; background: var(--color-ink); color: var(--color-paper); }
.skip:focus-visible { transform: translateY(0); }
.header { min-height: 108px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--color-rule); }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 600; line-height: 1.25; }
.brand img { border-radius: var(--radius-control); }
.brand-sub { display: block; font-size: var(--text-sm); font-weight: 400; color: var(--color-muted); }
nav { display: flex; gap: 28px; }
nav a { display: inline-flex; align-items: center; min-height: 48px; font-size: var(--text-sm); text-decoration: none; white-space: nowrap; }
.hero { padding-block: 88px 88px; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 64px; align-items: center; }
h1 { max-width: 12ch; }
.hero .lead { max-width: 40ch; margin-top: 28px; color: var(--color-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; min-height: 52px; padding: 12px 24px; border: 1px solid var(--color-clear); border-radius: var(--radius-control); font-size: 1rem; font-weight: 600; line-height: 1.3; text-decoration: none; white-space: nowrap; transition: background-color var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out); }
.button svg { width: 19px; height: 19px; }
.primary { background: var(--color-accent); color: var(--color-accent-ink); }
.primary:hover { background: var(--color-ink); color: var(--color-inverse); }
.secondary { border-color: var(--color-rule); background: var(--color-clear); }
.secondary:hover { background: var(--color-paper-3); color: var(--color-ink); }
.button:active { transform: translateY(1px); }
.button[aria-disabled="true"] { background: var(--color-paper-3); color: var(--color-muted); cursor: not-allowed; transform: none; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto; }
.hero-mark { display: flex; flex-direction: column; align-items: center; gap: 20px; padding: 20px 0; }
.hero-mark img { width: 204px; height: 204px; border-radius: 44px; }
.hero-mark > span { font-weight: 600; font-size: 1.1rem; }
.hero-mark .mark-description { font-size: var(--text-sm); color: var(--color-muted); font-weight: 400; margin-top: -12px; }
.notice { display: flex; align-items: flex-start; gap: 16px; padding-block: 24px; border-top: 1px solid var(--color-rule); border-bottom: 1px solid var(--color-rule); }
.notice svg { color: var(--color-focus); margin-top: 2px; }
.notice p { color: var(--color-muted); font-size: var(--text-sm); }
.notice strong { color: var(--color-ink); }
.installation { padding-block: 88px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 36px; }
.section-heading p, .faq > div > p { color: var(--color-muted); }
.platforms { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--gap-columns); margin-bottom: 32px; }
.platform { display: flex; align-items: center; gap: 20px; padding: 24px 28px; border: 1px solid var(--color-rule); border-radius: var(--radius-surface); text-decoration: none; }
.platform > svg:first-child { width: 34px; height: 34px; }
.platform strong { font-size: 1.2rem; font-weight: 600; }
.platform small { display: block; color: var(--color-muted); font-size: var(--text-sm); margin-top: 2px; }
.platform-check { margin-left: auto; visibility: hidden; }
.platform[aria-current="true"] { border-color: var(--color-ink); background: var(--color-accent-soft); color: var(--color-ink); }
.platform[aria-current="true"] .platform-check { visibility: visible; }
.platform:hover { border-color: var(--color-ink); color: var(--color-ink); }
.guide { scroll-margin-top: 24px; border: 1px solid var(--color-rule); border-radius: var(--radius-surface); margin-top: 32px; }
.guide-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 28px 32px; background: var(--color-ink); color: var(--color-inverse); border-radius: 13px 13px 0 0; }
.guide-head h3 { font-size: 1.6rem; letter-spacing: -.025em; }
.guide-head p { color: var(--color-inverse-muted); margin-top: 8px; font-size: var(--text-sm); }
.status { padding: 8px 12px; border: 1px solid var(--color-inverse-rule); border-radius: var(--radius-control); font-size: var(--text-sm); white-space: nowrap; }
.steps { list-style: none; counter-reset: step; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap-columns); margin: 0; padding: 36px 32px; }
.steps li { counter-increment: step; min-width: 0; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--color-rule); border-radius: 50%; font-size: var(--text-sm); margin-bottom: 24px; font-variant-numeric: tabular-nums; }
h4 { font-size: 1.15rem; line-height: 1.35; font-weight: 600; margin: 0 0 12px; }
.steps p { color: var(--color-muted); }
.download { margin-top: 24px; padding-inline: 20px; min-height: 48px; font-size: var(--text-sm); }
.steps small { display: block; color: var(--color-muted); margin-top: 12px; font-size: .8rem; }
.text-link { display: inline-flex; align-items: center; min-height: 48px; margin-top: 16px; font-size: var(--text-sm); font-weight: 600; }
.guide-note { border-top: 1px solid var(--color-rule); margin-inline: 32px; padding-block: 24px 28px; font-size: var(--text-sm); }
.guide-note p { color: var(--color-muted); margin-top: 8px; max-width: 75ch; }
.source-links { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 20px; font-size: .8rem; color: var(--color-muted); }
.first-start { background: var(--color-paper-3); padding-block: var(--space-3xl); }
.start-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--gap-columns); }
.start-grid > div > p { color: var(--color-muted); margin-top: 24px; max-width: 35ch; }
.start-steps { list-style: none; margin: 0; padding: 0; counter-reset: start; }
.start-steps li { counter-increment: start; position: relative; padding: 24px 0 24px 48px; border-bottom: 1px solid var(--color-rule); }
.start-steps li:first-child { padding-top: 0; }
.start-steps li:last-child { border-bottom: 0; }
.start-steps li::before { content: counter(start) "."; position: absolute; left: 0; font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.start-steps h3 { font-size: 1.2rem; letter-spacing: -.02em; }
.start-steps p { margin-top: 12px; color: var(--color-muted); }
.faq { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: var(--gap-columns); padding-block: 96px; }
.faq > div > p { margin-top: 20px; }
details { border-bottom: 1px solid var(--color-rule); }
details:first-child { border-top: 1px solid var(--color-rule); }
summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; padding-block: 20px; cursor: pointer; font-weight: 600; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; font-size: 1.5rem; font-weight: 400; }
details[open] summary::after { content: '−'; }
summary:hover { color: var(--color-focus); }
details p { padding-bottom: 24px; color: var(--color-muted); }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-block: 36px; border-top: 1px solid var(--color-rule); font-size: var(--text-sm); }
.footer p { color: var(--color-muted); }
.footer > a:last-child { min-height: 48px; display: flex; align-items: center; }
@media (max-width: 60rem) {
 .hero { gap: 32px; padding-block: 64px; }
 .hero-mark img { width: 160px; height: 160px; border-radius: 36px; }
 .hero-mark .mark-description { max-width: 24ch; text-align: center; }
 .section-heading { display: block; }
 .section-heading p { margin-top: 16px; }
 .steps { grid-template-columns: minmax(0, 1fr); gap: 28px; }
 .steps li { position: relative; padding-left: 56px; }
 .steps li::before { position: absolute; left: 0; margin: 0; }
 .steps p { max-width: 60ch; }
 .faq { grid-template-columns: minmax(0, 1fr); }
 .footer { flex-wrap: wrap; }
}
@media (max-width: 40rem) {
 .header { min-height: 88px; gap: 12px; }
 nav { gap: 16px; }
 .brand { gap: 8px; font-size: var(--text-sm); }
 .brand img { width: 40px; height: 40px; }
 .brand-sub { font-size: .8rem; }
 nav a { font-size: .8rem; }
 .hero { grid-template-columns: minmax(0, 1fr); padding-block: 48px 40px; gap: 32px; }
 .hero .lead { margin-top: 24px; }
 .hero-actions { gap: 12px; margin-top: 28px; }
 .hero-actions .button { padding-inline: 16px; gap: 12px; font-size: var(--text-sm); }
 .hero-mark { flex-direction: row; padding: 0; gap: 16px; flex-wrap: wrap; }
 .hero-mark img { width: 56px; height: 56px; border-radius: 12px; }
 .hero-mark > span { font-size: var(--text-sm); }
 .hero-mark .mark-description { display: none; }
 .notice { padding-block: 20px; gap: 12px; }
 .installation { padding-block: 48px; }
 .platforms { gap: 12px; margin-bottom: 24px; }
 .platform { padding: 20px 16px; gap: 12px; flex-wrap: wrap; }
 .platform > svg:first-child { width: 26px; height: 26px; }
 .platform span { flex-basis: 100%; order: 1; }
 .platform small { font-size: .75rem; }
 .platform-check { width: 20px; }
 .guide { margin-top: 24px; }
 .guide-head { padding: 24px 20px; align-items: flex-start; flex-wrap: wrap; gap: 12px; }
 .guide-head h3 { font-size: 1.35rem; }
 .steps { padding: 28px 20px; gap: 32px; }
 .steps li { padding-left: 48px; }
 .guide-note { margin-inline: 20px; }
 .download { padding-inline: 16px; font-size: .8rem; }
 .source-links { display: grid; gap: 12px; }
 .start-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
 .first-start { padding-block: 48px; }
 .faq { padding-block: 56px; }
 .footer { align-items: flex-start; gap: 24px; }
 .footer p { flex-basis: 100%; order: 1; }
}

/* Explicit closed state also keeps hidden answers out of text measurements. */
details:not([open]) > p { display: none; }
.status { font-variant-numeric: tabular-nums; }