:root {
  color-scheme: dark;
  /* Brand colors — 與 Figma「Brand colors」一致 */
  --violet-50: #F7F5FE; --violet-100: #ECEAFF; --violet-200: #DBD7FF; --violet-300: #C0B8FE; --violet-400: #9487FF;
  --violet-500: #6047FA; --violet-600: #4C32D8; --violet-700: #3B1FB6; --violet-800: #2A0093; --violet-900: #1A0266; --violet-950: #0C033C;
  --violet-on-dark: #6C54FF;
  --gray-50: #F9FAFB; --gray-100: #F3F4F6; --gray-200: #E5E7EB; --gray-300: #D1D5DB; --gray-400: #9CA3AF;
  --gray-500: #6B7280; --gray-600: #4B5563; --gray-700: #374151; --gray-800: #1F2937; --gray-900: #111827; --gray-950: #030712;

  --bg: var(--gray-950);
  --bg-raise: var(--gray-900);
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.14);
  --fg: #FFFFFF; --fg-2: var(--gray-300); --fg-3: var(--gray-400);

  --f-display: "Host Grotesk", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --r-control: 6px;
  --r-card: 6px;
  --max: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 16px/1.7 var(--f-body); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--f-display); text-transform: capitalize; }
.guide-content h2[id^="1-"],
.guide-content h2[id^="2-"],
.guide-content h2[id^="3-"],
.guide-content h2[id^="4-"],
.guide-content h2[id^="5-"],
.guide-content h2[id^="6-"],
.guide-content h2[id^="7-"] { text-transform: none; }
a { color: var(--violet-300); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--violet-400); outline-offset: 3px; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding-inline: 24px; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(3, 7, 18, .72); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); }
.site-header .wrap { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; }
.brand img { display: block; height: 20px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; color: var(--fg-2); font-size: 14px; }
.nav a { color: inherit; text-decoration: none; transition: color .15s, background-color .15s; }
.nav a:hover { color: var(--fg); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 44px; padding: 0 20px; border: 1px solid transparent; border-radius: var(--r-control);
  font: 600 16px/1 var(--f-body); text-decoration: none; cursor: pointer;
  transition: background .15s, transform .15s; }
.button:active { transform: scale(.98); }
.button-primary { background: var(--violet-500); color: #fff; }
.button-primary:hover { background: var(--violet-600); }
.button-ghost { background: rgba(255,255,255,.06); color: var(--fg); border-color: var(--line-strong); }
.button-ghost:hover { background: rgba(255,255,255,.12); }
.nav .button { width: auto; height: 32px; padding: 0 12px; font: 500 14px/1 var(--f-body); color: var(--fg); }
.guide-head { padding: 58px 0 46px; border-bottom: 1px solid var(--line); }
.breadcrumb { margin: 0 0 14px; color: var(--violet-300); font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }
.guide-head h1 { max-width: 820px; margin: 0; font-weight: 700; line-height: 1.04; letter-spacing: -.035em; text-wrap: balance; }
/* Hero 標題：WEB-PAGES.md Display S（桌機 44px／手機 36px） */
.display-s { font-size: 44px; }
.guide-meta { margin: 17px 0 0; color: var(--fg-3); }
.layout { display: grid; grid-template-columns: 240px minmax(0, 820px); gap: 70px; align-items: start; padding-block: 52px 100px; }
.toc { position: sticky; top: 96px; max-height: calc(100vh - 120px); overflow-y: auto; padding-right: 12px; }
.toc-title { margin: 0 0 13px; color: var(--fg-3); font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }
.toc ol { margin: 0; padding: 0; list-style: none; }
.toc ol { margin: 0 -12px; } /* 連結有 12px 內距，負邊距讓文字與標題左緣對齊 */
.toc li { margin: 0 0 2px; }
.toc a { display: block; padding: 7px 12px; border-radius: var(--r-control); color: var(--fg-3); text-decoration: none; font: 500 14px/22px var(--f-body); transition: background-color .15s, color .15s; }
.toc a:hover { background: rgba(255,255,255,.04); color: var(--fg); }
.toc a[aria-current="true"] { background: rgba(255,255,255,.06); color: var(--fg); }
.guide-download { margin-top: 18px; } /* WEB-PAGES.md Large：沿用 .button 的 44px／20px／600 16px */
.guide-content { min-width: 0; }
.guide-content > h1:first-child { display: none; }
.guide-content h2, .guide-content h3, .guide-content h4 { color: var(--fg); font-weight: 600; line-height: 1.25; letter-spacing: -.025em; }
.guide-content h2 { margin: 70px 0 19px; padding-top: 8px; font-size: 2rem; }
.guide-content h2:first-of-type { margin-top: 0; }
.guide-content h3 { margin: 42px 0 15px; font-size: 1.42rem; }
.guide-content h4 { margin: 30px 0 12px; font-size: 1.08rem; }
.guide-content p { margin: 0 0 20px; color: var(--fg-2); }
.guide-content ul, .guide-content ol { margin: 0 0 24px; padding-left: 25px; color: var(--fg-2); }
.guide-content li { margin: 6px 0; padding-left: 3px; }
.guide-content strong { color: var(--fg); }
.guide-content code { padding: .16em .38em; border: 1px solid color-mix(in srgb, var(--violet-400) 18%, transparent); border-radius: 4px; background: color-mix(in srgb, var(--violet-400) 11%, transparent); color: var(--violet-200); font: .88em/1.4 var(--f-mono); overflow-wrap: anywhere; }
.guide-content pre { max-width: 100%; margin: 25px 0 29px; padding: 20px 22px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-card); background: var(--bg-raise); color: var(--gray-200); font: 13px/1.68 var(--f-mono); white-space: pre; }
.guide-content pre code { padding: 0; border: 0; background: none; color: inherit; font: inherit; overflow-wrap: normal; }
.guide-content blockquote { margin: 26px 0; padding: 14px 18px; border-left: 3px solid var(--violet-500); background: color-mix(in srgb, var(--violet-500) 9%, transparent); }
.guide-content blockquote p { margin: 0; color: var(--fg-2); }
.table-wrap { max-width: 100%; margin: 26px 0 31px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-card); }
table { width: 100%; border-collapse: collapse; background: var(--bg); font-size: 14px; }
th, td { min-width: 145px; padding: 13px 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--bg-raise); color: var(--fg); font-weight: 600; }
td { color: var(--fg-2); }
tr:last-child td { border-bottom: 0; }
th:last-child, td:last-child { border-right: 0; }
.page-footer { border-top: 1px solid var(--line); }
.page-footer .wrap { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--fg-3); font-size: 14px; }
.footer-brand img { display: block; height: 22px; width: auto; }
.footer-meta { display: flex; align-items: center; gap: 20px; }
.footer-meta a { color: var(--fg-2); }
@media (prefers-reduced-motion: reduce) { .button, .toc a { transition: none; } }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
}
@media (max-width: 600px) {
  .display-s { font-size: 36px; }
  .wrap { padding-inline: 16px; }
  .button { width: 100%; }
  .nav .button { width: auto; }
  .nav a:not(.button) { display: none; }
  .guide-head { padding: 42px 0 34px; }
  .layout { padding-top: 34px; }
  .guide-content h2 { font-size: 1.7rem; }
  .guide-content pre { margin-left: -4px; margin-right: -4px; padding: 17px; font-size: 11.5px; }
  .page-footer .wrap { align-items: flex-start; flex-direction: column; justify-content: center; padding-top: 24px; padding-bottom: 24px; }
  .footer-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
}