:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-strong: #eef6f8;
  --text: #16202a;
  --muted: #5b6875;
  --subtle: #d8e3ea;
  --accent: #1769aa;
  --accent-strong: #0f4f83;
  --green: #0f766e;
  --amber: #9a6700;
  --shadow: 0 16px 40px rgba(22, 32, 42, 0.08);
  --radius: 8px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-strong);
}

a:focus-visible {
  outline: 3px solid rgba(23, 105, 170, 0.25);
  outline-offset: 4px;
  border-radius: 4px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 1rem;
  font-size: 3rem;
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 1rem;
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.layout {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  transform: translateY(-140%);
  border-radius: var(--radius);
  background: var(--text);
  color: #ffffff;
  padding: 0.6rem 0.85rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(216, 227, 234, 0.9);
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(14px);
}

.header-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  overflow-x: auto;
  white-space: nowrap;
}

.site-nav a {
  border-radius: var(--radius);
  color: var(--muted);
  padding: 0.45rem 0.65rem;
  text-decoration: none;
}

.site-nav a:hover {
  background: var(--surface-strong);
  color: var(--text);
}

.hero {
  border-bottom: 1px solid var(--subtle);
  background:
    linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0) 80%),
    radial-gradient(circle at 88% 18%, rgba(15, 118, 110, 0.12), transparent 30rem),
    var(--bg);
  padding: 5rem 0 4rem;
}

.hero-layout {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow,
.section-kicker {
  margin-bottom: 0.7rem;
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 700;
}

.hero-subtitle {
  margin-bottom: 1rem;
  color: var(--accent-strong);
  font-size: 1.25rem;
  font-weight: 700;
}

.hero-text {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--subtle);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  padding: 0.6rem 1rem;
  text-decoration: none;
}

.button:hover {
  border-color: rgba(23, 105, 170, 0.35);
  background: var(--surface-strong);
  color: var(--text);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.button.primary:hover {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: #ffffff;
}

.profile-figure {
  margin: 0;
}

.profile-figure img {
  width: min(100%, 320px);
  border: 1px solid var(--subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  aspect-ratio: 1;
  object-fit: cover;
}

.profile-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: 4rem 0;
}

.section.alt {
  border-block: 1px solid var(--subtle);
  background: #ffffff;
}

.section-grid {
  display: grid;
  gap: 1.5rem;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 1.5rem;
}

.prose {
  max-width: 760px;
  color: var(--muted);
}

.prose p:last-child,
.info-card p:last-child,
.timeline p:last-child,
.contact-section p:last-child {
  margin-bottom: 0;
}

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

.capability-grid {
  align-items: stretch;
}

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

.info-card p {
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  gap: 0.8rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--surface);
  padding: 1.1rem 1.25rem;
}

.timeline-meta {
  color: var(--amber);
  font-size: 0.92rem;
  font-weight: 700;
}

.role {
  margin-bottom: 0.45rem;
  color: var(--accent-strong);
  font-weight: 700;
}

.activity-list,
.link-list {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
}

.activity-list li,
.link-list li {
  margin-bottom: 0.45rem;
}

.activity-list li:last-child,
.link-list li:last-child {
  margin-bottom: 0;
}

.category-list {
  display: grid;
  gap: 1rem;
}

.category-panel {
  position: relative;
  border: 1px solid var(--subtle);
  border-radius: var(--radius);
  background: var(--surface);
}

.category-panel h3 {
  margin: 0;
  border-bottom: 1px solid rgba(216, 227, 234, 0.82);
  padding: 0.75rem 1rem;
  font-size: 1rem;
}

.compact-list {
  margin: 0;
  padding: 0.9rem 1.35rem 0.9rem 2.35rem;
}

.compact-list li {
  margin-bottom: 0.75rem;
}

.item-link {
  display: inline-block;
  margin-left: 0.45rem;
  font-size: 0.92em;
  font-weight: 700;
  white-space: nowrap;
}

.empty-state {
  margin: 0;
  color: var(--muted);
  padding: 0.85rem 1rem;
}

.noscript-note {
  margin: 1rem 0 0;
  color: var(--muted);
}

.expand-button {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  border: 0;
  border-top: 1px solid rgba(216, 227, 234, 0.82);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 0.45rem 1rem;
  text-align: center;
}

.expand-button:hover,
.expand-button:focus-visible {
  background: var(--surface-strong);
  color: var(--accent-strong);
}

.link-groups {
  display: grid;
  gap: 1rem;
}

.link-groups > div {
  border: 1px solid var(--subtle);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.25rem;
}

.contact-section {
  background: var(--surface-strong);
}

.contact-layout {
  display: grid;
  gap: 1.5rem;
}

.contact-list {
  display: grid;
  gap: 0.75rem;
  font-style: normal;
}

.contact-list a {
  border: 1px solid rgba(23, 105, 170, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  padding: 0.8rem 1rem;
  text-decoration: none;
}

.contact-list a:hover {
  background: #ffffff;
}

.site-footer {
  border-top: 1px solid var(--subtle);
  background: var(--text);
  color: rgba(255, 255, 255, 0.82);
  padding: 1.4rem 0;
}

.footer-layout {
  display: grid;
  gap: 0.5rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #ffffff;
}

@media (max-width: 620px) {
  h1 {
    font-size: 2.35rem;
  }

  h2 {
    font-size: 1.65rem;
  }

  .header-layout {
    display: grid;
    gap: 0.2rem;
    padding: 0.75rem 0;
  }

  .site-nav {
    margin-inline: -0.35rem;
    padding-bottom: 0.15rem;
  }

  .hero {
    padding: 3.25rem 0 3rem;
  }

  .section {
    padding: 3rem 0;
  }

  .compact-list {
    padding-right: 1rem;
    padding-left: 2rem;
  }

  .item-link {
    margin-left: 0;
  }

  .item-link::before {
    content: " ";
  }
}

@media (min-width: 760px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr) 340px;
  }

  .section-grid {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .capability-grid .info-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }

  .timeline li {
    grid-template-columns: 170px minmax(0, 1fr);
  }

  .link-groups,
  .contact-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-layout {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}