:root {
  --ink: #173b38;
  --ink-soft: #334944;
  --paper: #fbf8f3;
  --surface: #ffffff;
  --mist: #e8f1ee;
  --teal: #165b55;
  --teal-dark: #0e4540;
  --clay: #9b5438;
  --clay-soft: #f1dfd3;
  --gold: #d6a94d;
  --line: #d7e0dc;
  --muted: #667571;
  --shadow: 0 16px 38px rgba(23, 59, 56, 0.1);
  --radius: 18px;
  --max: 1160px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

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

a {
  color: var(--teal);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--clay);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  color: #fff;
  background: var(--ink);
  border-radius: 0.5rem;
  transform: translateY(-180%);
}

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

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(251, 248, 243, 0.96);
  border-bottom: 1px solid rgba(215, 224, 220, 0.9);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 4.7rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.25;
  text-decoration: none;
}

.brand img {
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  object-fit: cover;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.15rem;
  flex-wrap: wrap;
}

.primary-nav a {
  padding: 0.45rem 0.65rem;
  border-radius: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.93rem;
  font-weight: 700;
  text-decoration: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--teal);
  background: var(--mist);
}

.primary-nav .nav-cta {
  color: #fff;
  background: var(--teal);
}

.primary-nav .nav-cta:hover {
  color: #fff;
  background: var(--teal-dark);
}

.breadcrumb {
  padding-top: 1.15rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumb ol {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.breadcrumb li + li::before {
  margin-right: 0.45rem;
  color: #8a9793;
  content: "/";
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 2.75rem 0 4.5rem;
  background:
    radial-gradient(circle at 92% 10%, rgba(231, 200, 180, 0.8) 0 15rem, transparent 15.1rem),
    radial-gradient(circle at 2% 94%, rgba(219, 233, 228, 0.95) 0 20rem, transparent 20.1rem);
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 1.5fr) minmax(250px, 0.6fr);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.9rem;
  padding: 0.35rem 0.75rem;
  color: #fff;
  background: var(--teal);
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  font-family: "Noto Serif TC", "PMingLiU", "Microsoft JhengHei", serif;
  line-height: 1.3;
}

h1 {
  max-width: 20ch;
  margin-bottom: 1rem;
  font-size: clamp(2.15rem, 5vw, 4rem);
  letter-spacing: -0.035em;
  text-wrap: balance;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.65rem, 3.5vw, 2.5rem);
}

h3 {
  margin-bottom: 0.55rem;
  font-size: 1.25rem;
}

.lead {
  max-width: 60ch;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 2.2vw, 1.3rem);
}

.hero-meta {
  display: grid;
  margin: 1.7rem 0;
  gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.meta-card {
  min-height: 6.7rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(215, 224, 220, 0.85);
  border-radius: 0.85rem;
  box-shadow: 0 8px 24px rgba(23, 59, 56, 0.06);
}

.meta-card span {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.meta-card strong {
  display: block;
  color: var(--ink);
  font-size: 1.04rem;
  line-height: 1.45;
}

.hero-art {
  align-self: end;
}

.hero-art img {
  width: min(100%, 408px);
  margin-inline: auto;
  filter: drop-shadow(0 18px 22px rgba(23, 59, 56, 0.18));
}

.actions {
  display: flex;
  margin-top: 1.4rem;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  padding: 0.7rem 1.15rem;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--teal);
  border: 2px solid var(--teal);
  border-radius: 0.7rem;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
}

.button:hover {
  color: #fff;
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

.button.secondary {
  color: var(--teal);
  background: transparent;
}

.button.secondary:hover {
  color: var(--teal-dark);
  background: #fff;
}

.source-note,
.notice {
  padding: 1rem 1.15rem;
  border-radius: 0.75rem;
}

.source-note {
  margin-top: 1.2rem;
  color: #55382e;
  background: var(--clay-soft);
  border-left: 5px solid var(--clay);
  font-size: 0.92rem;
}

.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.section.alt {
  background: #fff;
}

.section-heading {
  max-width: 47rem;
  margin-bottom: 2rem;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.06rem;
}

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

.icon-mark {
  display: inline-grid;
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 0.85rem;
  place-items: center;
  color: #fff;
  background: var(--teal);
  border-radius: 0.65rem;
  font-weight: 900;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 42rem;
}

th,
td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--ink);
  background: var(--mist);
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

.schedule {
  display: grid;
  gap: 0.85rem;
}

.schedule-item {
  display: grid;
  padding: 1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1rem;
}

.schedule-item time {
  color: var(--clay);
  font-weight: 900;
}

.two-col {
  display: grid;
  align-items: start;
  gap: 2rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.prose {
  max-width: 48rem;
}

.prose > * + * {
  margin-top: 1.15rem;
}

.check-list,
.plain-list {
  padding-left: 1.25rem;
}

.check-list li,
.plain-list li {
  margin-bottom: 0.55rem;
}

.check-list li::marker {
  color: var(--teal);
}

.notice {
  background: var(--mist);
  border: 1px solid #c8ddd6;
}

.notice.warning {
  color: #5e392a;
  background: #fff2e9;
  border-color: #eac6b3;
}

.instructor-panel {
  display: grid;
  align-items: center;
  gap: 2.5rem;
  grid-template-columns: minmax(240px, 0.62fr) minmax(0, 1fr);
}

.portrait-frame {
  padding: 1rem 1rem 0;
  background: linear-gradient(145deg, var(--mist), #fff);
  border: 1px solid var(--line);
  border-radius: 45% 45% 1.25rem 1.25rem;
}

.logo-lockup {
  display: flex;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--line);
}

.logo-lockup img {
  width: 5rem;
  height: 5rem;
  object-fit: cover;
  border-radius: 0.75rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

details.faq {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
}

details.faq summary {
  padding: 1rem 3rem 1rem 1.1rem;
  cursor: pointer;
  color: var(--ink);
  font-weight: 800;
  list-style-position: inside;
}

details.faq > div {
  padding: 0 1.1rem 1.15rem;
  color: var(--ink-soft);
}

.cta-band {
  padding: clamp(2.5rem, 6vw, 4.25rem) 0;
  color: #fff;
  background: var(--ink);
}

.cta-band h2,
.cta-band p,
.cta-band a:not(.button) {
  color: #fff;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.cta-inner h2 {
  margin-bottom: 0.45rem;
}

.cta-band .actions {
  margin-top: 0;
}

.cta-band .button {
  color: var(--ink);
  background: #fff;
  border-color: #fff;
}

.cta-band .button:hover {
  color: var(--ink);
  background: var(--clay-soft);
  border-color: var(--clay-soft);
}

.page-hero {
  padding: 2.2rem 0 3.8rem;
  background: linear-gradient(145deg, var(--mist), var(--paper) 62%);
}

.page-hero h1 {
  max-width: 21ch;
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.page-hero .lead {
  max-width: 48rem;
}

.fact-strip {
  display: grid;
  margin-top: 1.5rem;
  gap: 0.8rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.fact-strip > div {
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
}

.fact-strip strong {
  display: block;
}

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

.updated {
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer {
  padding: 3rem 0;
  color: #e5eeeb;
  background: #102f2d;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.3fr 1fr 1fr;
}

.site-footer h2,
.site-footer h3 {
  color: #fff;
}

.site-footer a {
  color: #d9ebe5;
}

.site-footer ul {
  margin: 0;
  padding-left: 1.2rem;
}

.legal {
  margin-top: 2rem;
  padding-top: 1.25rem;
  color: #b8c9c4;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.84rem;
}

@media (max-width: 900px) {
  .header-inner {
    padding: 0.65rem 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .primary-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .hero-grid,
  .instructor-panel {
    grid-template-columns: minmax(0, 1fr) minmax(200px, 0.55fr);
  }

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

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

@media (max-width: 680px) {
  html {
    scroll-padding-top: 9rem;
  }

  .brand small {
    display: none;
  }

  .primary-nav {
    display: grid;
    overflow: visible;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .primary-nav a {
    padding: 0.42rem 0.2rem;
    font-size: 0.8rem;
    text-align: center;
  }

  .primary-nav .nav-cta {
    grid-column: 1 / -1;
  }

  .hero {
    padding-top: 1.8rem;
  }

  .hero-grid,
  .instructor-panel,
  .two-col,
  .cards,
  .fact-strip,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 1rem;
  }

  .hero-art {
    display: none;
  }

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

  .meta-card {
    min-height: 0;
  }

  .schedule-item {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-inner .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}