:root {
    color: #20201e;
    background: #f7f7f5;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body { margin: 0; background: #f7f7f5; }
.extension-guide-header { display: flex; justify-content: center; padding: 24px 20px; border-bottom: 1px solid #e1e1dd; background: #fff; }
.extension-guide-brand { display: inline-flex; align-items: center; gap: 10px; color: #191919; font-size: 19px; font-weight: 750; text-decoration: none; }
.extension-guide-brand img { width: 36px; height: 36px; border-radius: 9px; }
.extension-guide-shell { width: min(920px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 56px; }
.extension-guide-hero { max-width: 760px; }
.extension-guide-eyebrow { margin: 0 0 10px; color: #2f7c47; font-size: 11px; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.extension-guide-hero h1 { max-width: 750px; margin: 0; font-size: clamp(42px, 7vw, 68px); line-height: 1; letter-spacing: -.052em; }
.extension-guide-hero > p:not(.extension-guide-eyebrow) { max-width: 680px; margin: 22px 0 0; color: #5e5e58; font-size: 18px; line-height: 1.65; }
.extension-guide-actions { display: flex; align-items: center; gap: 20px; margin-top: 28px; }
.extension-guide-actions .btn { display: inline-flex; align-items: center; text-decoration: none; }
.extension-guide-text-link { color: #30302d; font-size: 14px; font-weight: 650; }
.extension-guide-card { margin-top: 58px; padding: 38px; border: 1px solid #ddddda; border-radius: 18px; background: #fff; box-shadow: 0 16px 50px rgb(0 0 0 / 5%); }
.extension-guide-heading > p { margin: 0 0 6px; color: #777772; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.extension-guide-heading h2 { margin: 0; font-size: 30px; letter-spacing: -.03em; }
.extension-steps { margin: 28px 0 0; padding: 0; list-style: none; }
.extension-steps li { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 16px; padding: 22px 0; border-top: 1px solid #e5e5e1; }
.extension-steps li > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: #e2f2e6; color: #22663a; font-size: 13px; font-weight: 800; }
.extension-steps h3 { margin: 2px 0 6px; font-size: 17px; }
.extension-steps p { margin: 0; color: #60605b; font-size: 14px; line-height: 1.6; }
.extension-guide-note { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 42px; margin-top: 24px; padding: 28px; border-radius: 15px; background: #eeeeea; }
.extension-guide-note h2 { margin: 0; font-size: 22px; line-height: 1.25; letter-spacing: -.025em; }
.extension-guide-note > p { margin: 0; color: #5e5e58; font-size: 14px; line-height: 1.65; }
.extension-guide-help { margin: 48px auto 0; text-align: center; }
.extension-guide-help h2 { margin: 0; font-size: 24px; }
.extension-guide-help p { max-width: 660px; margin: 12px auto; color: #60605b; font-size: 14px; line-height: 1.6; }
.extension-guide-help a { color: #191919; font-weight: 700; }
.extension-guide-footer { display: flex; justify-content: center; gap: 20px; padding: 22px 20px 34px; color: #6d6d68; font-size: 12px; }
.extension-guide-footer a { color: inherit; }

@media (max-width: 600px) {
    .extension-guide-header { padding: 18px; }
    .extension-guide-shell { width: min(100% - 24px, 920px); padding: 42px 0 40px; }
    .extension-guide-hero h1 { font-size: 43px; }
    .extension-guide-hero > p:not(.extension-guide-eyebrow) { font-size: 16px; }
    .extension-guide-actions { align-items: stretch; flex-direction: column; gap: 14px; }
    .extension-guide-actions .btn { justify-content: center; width: 100%; }
    .extension-guide-text-link { text-align: center; }
    .extension-guide-card { margin-top: 40px; padding: 26px 20px; border-radius: 14px; }
    .extension-guide-heading h2 { font-size: 26px; }
    .extension-steps li { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; }
    .extension-steps li > span { width: 32px; height: 32px; }
    .extension-guide-note { grid-template-columns: 1fr; gap: 14px; padding: 22px; }
}