:root { font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif; color: #17324d; background: #f5f8fb; }
* { box-sizing: border-box; }
body { min-width: 320px; min-height: 100vh; margin: 0; line-height: 1.7; }
a { color: #155e75; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #f1ab2c; outline-offset: 3px; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: min(100% - 2rem, 920px); margin: 1rem auto 0; padding: .75rem 0; }
.brand { color: #17324d; font-weight: 800; text-decoration: none; white-space: nowrap; }
.site-header nav { display: flex; flex-wrap: wrap; gap: .7rem 1rem; }
.site-header nav a[aria-current="page"] { font-weight: 800; text-decoration-thickness: 3px; text-underline-offset: .25rem; }
.page-shell { width: min(100% - 2rem, 760px); margin: 2rem auto; padding: clamp(1.25rem, 4vw, 2rem); border: 1px solid #cbd8e4; border-radius: 20px; background: #fff; }
.eyebrow { margin: 0 0 .5rem; color: #176b87; font-weight: 800; letter-spacing: .06em; }
h1, h2, h3 { line-height: 1.25; }
h1 { margin: 0; }
.page-description { margin: .75rem 0 0; color: #52657d; }
.content-section { margin-top: 2rem; }
.content-section h2 { margin: 0 0 .7rem; }
.content-section p { margin: 0; }
.placeholder-block { padding: 1rem; border: 1px dashed #d59a5b; border-radius: 14px; background: #fffaf5; }
.service-grid, .link-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.service-card, .link-card { display: flex; flex-direction: column; gap: .45rem; min-width: 0; padding: 1rem; border: 1px solid #d8e0ea; border-radius: 14px; background: #fbfdff; }
.service-card p, .link-card span { margin: 0; color: #52657d; }
.service-card strong { color: #17643d; }
.button-link, button { display: inline-block; margin-top: 1.25rem; padding: .65rem .9rem; border: 0; border-radius: 9px; background: #176b87; color: #fff; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; }
.button-link:hover, button:hover { background: #0d4053; }
.contact-form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.form-field { display: grid; gap: .35rem; }
label { font-weight: 700; }
input, textarea { width: 100%; padding: .65rem .75rem; border: 1px solid #aebdca; border-radius: 8px; background: #fff; color: inherit; font: inherit; }
textarea { resize: vertical; }
.contact-form button { justify-self: start; margin-top: 0; }
.status { min-height: 2rem; margin: 0; color: #52657d; }
.status[data-state="success"] { color: #17643d; }
.status[data-state="error"] { color: #a13d2d; }
.workflow-list { display: grid; gap: .65rem; padding-left: 1.25rem; }
.site-footer { padding: 2rem 1rem; border-top: 1px solid #d8e0ea; color: #52657d; text-align: center; }
.site-footer p { max-width: 760px; margin: 0 auto; }
@media (max-width: 680px) { .site-header { align-items: flex-start; flex-direction: column; } .service-grid, .link-grid { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .site-header, .page-shell { width: min(100% - 1.25rem, 760px); } .site-header nav { gap: .5rem .75rem; } }