.extension-page { padding-top: 4px; }
.extension-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 320px); gap: 36px; align-items: center; padding: 36px; margin-top: 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--blue-50); }
.extension-intro { min-width: 0; }
.extension-eyebrow { margin-bottom: 12px; color: var(--blue-700); font-size: 12px; font-weight: 600; }
.extension-intro h1 { font-size: 32px; margin-bottom: 14px; }
.extension-intro > p { max-width: 600px; font-size: 15px; color: var(--ink-700); }
.extension-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 20px 0; }
.extension-tags span { padding: 4px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--ink-500); font-size: 12px; }
.extension-platform { display: inline-block; font-size: 13px; }
.extension-download { padding: 24px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.extension-package-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 14px; background: var(--blue-100); color: var(--blue-700); border-radius: 10px; font-size: 27px; line-height: 1; }
.extension-download h2 { margin-bottom: 4px; }
.extension-download > p { color: var(--ink-500); font-size: 12px; margin-bottom: 18px; }
.extension-download .btn { width: 100%; justify-content: center; }
.extension-download-hint { display: block; margin-top: 10px; color: var(--ink-500); text-align: center; font-size: 12px; }
.extension-package-meta { padding-top: 14px; margin: 18px 0 0; border-top: 1px solid var(--line-soft); font-size: 12px; }
.extension-package-meta div { display: flex; justify-content: space-between; gap: 12px; margin-top: 4px; }
.extension-package-meta dt { color: var(--ink-500); }
.extension-package-meta dd { margin: 0; }
.extension-status { display: flex; gap: 16px; margin: 16px 0 28px; padding: 14px 18px; border-left: 3px solid var(--amber); border-radius: 6px; background: var(--amber-bg); color: var(--ink-700); font-size: 13px; }
.extension-status strong { flex-shrink: 0; color: var(--amber); }
.extension-status p { margin: 0; }
.extension-section-head { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 14px; }
.extension-section-head h2 { margin: 3px 0 0; }
.extension-section-head > span { color: var(--ink-500); font-size: 12px; }
.extension-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 0; list-style: none; margin: 0; }
.extension-steps li { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.extension-step-number { display: inline-block; color: var(--blue-600); font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.extension-steps h3 { font-size: 16px; }
.extension-steps p { color: var(--ink-700); font-size: 13px; }
.extension-steps .extension-step-tip { color: var(--ink-500); font-size: 12px; margin-bottom: 0; }
.extension-browser-address { display: flex; flex-direction: column; gap: 2px; margin-top: 10px; font-size: 12px; }
.extension-browser-address code { color: var(--blue-700); }
.extension-doc-links { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 12px 0 28px; color: var(--ink-500); font-size: 12px; }
.extension-info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.extension-panel { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.extension-panel h2 { margin-top: 4px; }
.extension-usage { padding-left: 20px; color: var(--ink-700); }
.extension-usage li { padding-left: 4px; margin-bottom: 12px; }
.extension-panel details { border-top: 1px solid var(--line-soft); padding: 12px 0; font-size: 13px; }
.extension-panel details:last-child { padding-bottom: 0; }
.extension-panel summary, .extension-integrity summary { cursor: pointer; color: var(--ink-700); }
.extension-panel details p { margin: 8px 0 0; color: var(--ink-500); }
.extension-integrity { margin-top: 18px; font-size: 12px; color: var(--ink-500); }
.extension-integrity dl { padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.extension-integrity dd { margin: 2px 0 12px; }
.extension-integrity dd:last-child { margin-bottom: 0; }
.extension-page code { overflow-wrap: anywhere; }
#manual-install { scroll-margin-top: 80px; }
.extension-privacy { max-width: 860px; margin: 0 auto; padding: 22px 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.extension-privacy h1 { margin-top: 18px; }
.extension-privacy h2 { margin-top: 28px; font-size: 17px; }
.extension-privacy p, .extension-privacy li { color: var(--ink-700); }
.extension-privacy code { overflow-wrap: anywhere; }
@media (max-width: 860px) {
  .extension-hero { grid-template-columns: 1fr; padding: 24px; gap: 24px; }
  .extension-steps { grid-template-columns: 1fr; }
  .extension-info-grid { grid-template-columns: 1fr; }
  .extension-status { flex-direction: column; gap: 4px; }
  .extension-section-head { align-items: start; flex-direction: column; gap: 4px; }
}
@media (max-width: 480px) {
  .extension-hero { padding: 20px 16px; }
  .extension-intro h1 { font-size: 27px; }
  .extension-download, .extension-panel { padding: 20px; }
  .extension-privacy { padding: 20px 16px; }
}