:root { font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif; color: #17324d; background: #f5f8fb; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; line-height: 1.7; }
.site-header, .page-shell { width: min(100% - 2rem, 760px); margin: 0 auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; flex-wrap: wrap; }
.site-header nav { display: flex; flex-wrap: wrap; gap: .75rem; }
.page-shell { margin-top: 1rem; margin-bottom: 2rem; padding: 2rem; border: 1px solid #cbd8e4; border-radius: 1rem; background: #fff; }
.eyebrow { color: #176b87; font-weight: 800; letter-spacing: .06em; }
.page-description { color: #52657d; }
.faq-list { display: grid; gap: .75rem; padding: 0; list-style: none; }
.faq-item { padding: 1rem; border: 1px solid #cbd8e4; border-radius: .75rem; background: #fbfdff; }
.faq-item p { margin-bottom: 0; }
button, a { font: inherit; }
button { padding: .6rem .85rem; border: 0; border-radius: .5rem; background: #176b87; color: #fff; cursor: pointer; }
button:focus-visible, a:focus-visible { outline: 3px solid #f1ab2c; outline-offset: 3px; }
nav[hidden], [hidden] { display: none; }
.status { min-height: 1.7rem; color: #17643d; font-weight: 700; }
@media (max-width: 560px) { .page-shell { padding: 1rem; } .site-header { align-items: flex-start; } }