/* 案例頁樣式。變數與 .brand / .site-footer 沿用主樣式表，
   這裡只補靜態頁自己的頁首、頁面骨架與長文排版。 */

.case-header {
  width: min(1220px, calc(100% - 48px));
  height: 88px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.case-back {
  padding: 9px 15px;
  color: var(--paper);
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: 13px;
  white-space: nowrap;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.case-back:hover { border-color: rgba(72, 168, 255, 0.45); background: rgba(72, 168, 255, 0.08); }

.case-page {
  width: min(820px, calc(100% - 48px));
  margin-inline: auto;
  padding-block: 56px 96px;
}
.case-page .eyebrow { color: var(--blue); font: 500 11px 'IBM Plex Mono', monospace; letter-spacing: 0.12em; }
.case-page .eyebrow a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.case-page h1 {
  margin: 18px 0 0;
  font-size: clamp(30px, 5.4vw, 46px);
  line-height: 1.25;
  letter-spacing: -0.03em;
}
.case-lead {
  margin: 20px 0 0;
  max-width: 42em;
  color: #c2cee0;
  font-size: 17px;
  line-height: 1.75;
}

.case-chips { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: rgba(13, 27, 47, 0.72);
  font-size: 12px;
  font-weight: 600;
}
.chip small { color: var(--muted); font: 500 9px 'IBM Plex Mono', monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.chip-mint { color: #bff6e7; border-color: rgba(107, 227, 193, 0.32); }
.chip-blue { color: #cfe6ff; border-color: rgba(72, 168, 255, 0.32); }
.chip-amber { color: #ffe6b8; border-color: rgba(244, 199, 107, 0.32); }
.chip-violet { color: #e2d1ff; border-color: rgba(169, 111, 255, 0.32); }
.chip-muted { color: #c3cddc; }

.case-note {
  margin: 26px 0 0;
  padding: 16px 18px;
  color: #dffcf4;
  border-left: 2px solid var(--mint);
  background: rgba(107, 227, 193, 0.055);
  font-size: 14px;
  line-height: 1.75;
}

.case-demo { margin: 36px 0 0; }
.case-demo video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--ink);
}
.case-demo figcaption { margin-top: 12px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }

.case-toc {
  margin: 44px 0 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(13, 27, 47, 0.62);
}
.case-toc p { margin: 0 0 12px; color: var(--violet); font: 500 10px 'IBM Plex Mono', monospace; letter-spacing: 0.1em; }
.case-toc ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.case-toc li { color: var(--muted); font-size: 13px; }
.case-toc a { color: #c8d3e4; }
.case-toc a:hover { color: var(--blue); }

/* 長文排版 */
.prose { margin-top: 8px; }
.prose h2 {
  margin: 64px 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  font-size: clamp(23px, 3.4vw, 28px);
  letter-spacing: -0.025em;
}
.prose h3 { margin: 38px 0 0; color: #dbe6f7; font-size: 17px; letter-spacing: -0.015em; }
.prose p { margin: 18px 0 0; color: #aebacf; font-size: 15.5px; line-height: 1.9; }
.prose strong { color: var(--paper); font-weight: 600; }
.prose ul, .prose ol { margin: 18px 0 0; padding-left: 22px; display: grid; gap: 11px; }
.prose li { color: #aebacf; font-size: 15.5px; line-height: 1.85; }
.prose li::marker { color: rgba(72, 168, 255, 0.7); }
.prose a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: #8cc8ff; }
.prose img { margin: 30px 0 0; width: 100%; border: 1px solid var(--line); border-radius: 16px; }
.prose hr { margin: 56px 0 0; border: 0; border-top: 1px solid var(--line); }
.prose blockquote {
  margin: 26px 0 0;
  padding: 16px 20px;
  border-left: 2px solid var(--violet);
  background: rgba(169, 111, 255, 0.06);
  border-radius: 0 12px 12px 0;
}
.prose blockquote p { margin: 0; color: #cdd7e8; font-size: 14.5px; }

.prose code {
  padding: 2px 6px;
  border-radius: 5px;
  background: rgba(118, 145, 193, 0.14);
  font: 500 0.88em 'IBM Plex Mono', ui-monospace, monospace;
  color: #d8e4f6;
}
.prose pre {
  margin: 26px 0 0;
  padding: 20px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(7, 17, 31, 0.85);
}
.prose pre code {
  padding: 0;
  background: none;
  color: #b7c8de;
  font-size: 12.5px;
  line-height: 1.75;
  white-space: pre;
}

.table-wrap { margin: 26px 0 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; }
.prose th, .prose td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.prose th { color: var(--paper); background: rgba(16, 35, 61, 0.8); font: 600 12px 'IBM Plex Mono', monospace; letter-spacing: 0.04em; white-space: nowrap; }
.prose td { color: #aebacf; line-height: 1.7; }
.prose tr:last-child td { border-bottom: 0; }

.case-source { margin: 56px 0 0; font-size: 14px; }
.case-source a { color: var(--muted); }
.case-source a:hover { color: var(--blue); }

.case-nav { margin-top: 56px; padding-top: 32px; display: flex; gap: 16px; justify-content: space-between; border-top: 1px solid var(--line); }
.case-nav-link {
  flex: 0 1 46%;
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(13, 27, 47, 0.62);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.case-nav-link:hover { border-color: rgba(72, 168, 255, 0.4); transform: translateY(-2px); }
.case-nav-link small { color: var(--muted); font: 500 9px 'IBM Plex Mono', monospace; letter-spacing: 0.1em; }
.case-nav-next { text-align: right; }
.case-home { margin: 34px 0 0; font-size: 14px; }
.case-home a { color: var(--blue); }

@media (max-width: 760px) {
  .case-header { width: calc(100% - 32px); height: 72px; }
  .case-page { width: calc(100% - 32px); padding-block: 34px 72px; }
  .prose h2 { margin-top: 48px; }
  .case-nav { flex-direction: column; }
  .case-nav-link { flex: 1 1 auto; }
  .case-nav-next { text-align: left; }
}