/* 功生聯 — GitHub Pages 靜態站 */
:root {
  --bg: #0b1220;
  --bg-elevated: #111a2e;
  --surface: #162238;
  --text: #e8edf7;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #22d3ee;
  --border: rgba(148, 163, 184, 0.18);
  --radius: 14px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --font-sans: "Noto Sans TC", system-ui, sans-serif;
  --font-display: "Noto Serif TC", "Noto Sans TC", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 10% -10%, rgba(56, 189, 248, 0.12), transparent 50%),
    radial-gradient(ellipse 80% 60% at 90% 20%, rgba(34, 211, 238, 0.08), transparent 45%);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  color: var(--accent-2);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 18, 32, 0.82);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
  color: var(--accent-2);
}

.brand__mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  padding: 4px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand__abbr {
  font-size: 0.78rem;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

.nav a {
  font-size: 0.92rem;
  padding: 0.35rem 0;
  color: var(--muted);
}
.nav a:hover {
  color: var(--accent);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.hero {
  display: grid;
  gap: 2rem;
  padding: 2.5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

@media (min-width: 768px) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: center;
  }
}

.hero__badge {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4vw, 2.15rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.hero__lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 52ch;
  margin: 0 0 1.5rem;
}

.hero__names {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.hero__names dt {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0;
}
.hero__names dd {
  margin: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--primary {
  background: linear-gradient(135deg, #0ea5e9, #06b6d4);
  color: #0b1220;
}
.btn--primary:hover {
  color: #0b1220;
}

.btn--ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero__card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.hero__card img {
  border-radius: 10px;
  margin: 0 auto 1rem;
  max-height: 200px;
  width: auto;
}

.hero__card-caption {
  text-align: center;
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0;
}

.section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}
.section:last-of-type {
  border-bottom: none;
}

.section h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 0 0 1rem;
}

.section p {
  color: var(--muted);
  margin: 0 0 1rem;
}

.grid-3 {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--accent-2);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  margin: 0 0 0.5rem;
}

.page-intro {
  color: var(--muted);
  margin: 0 0 2rem;
  max-width: 65ch;
}

.prose {
  max-width: 52rem;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 2.25rem 0 0.75rem;
  color: var(--text);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose li {
  color: #cbd5e1;
}

.prose ol {
  padding-left: 1.25rem;
}

.prose li {
  margin: 0.35rem 0;
}

.doc-table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.doc-table th,
.doc-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-table th {
  background: var(--surface);
  color: var(--accent-2);
  font-weight: 600;
}

.doc-table tr:last-child td {
  border-bottom: none;
}

.download-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.download-list li {
  margin: 0.75rem 0;
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.contact-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 2rem;
}

.contact-box h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

.contact-box p {
  margin: 0.35rem 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.25rem;
  margin-top: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer p {
  margin: 0.35rem 0;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
}

.note {
  font-size: 0.9rem;
  color: var(--muted);
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
}