:root {
  --color-bg: #f7f3ea;
  --color-bg-mint: #edf7f1;
  --color-surface: #fffdf8;
  --color-surface-soft: #edf6f3;
  --color-surface-blue: #edf4fb;
  --color-surface-warm: #fff3df;
  --color-text: #22332f;
  --color-muted: #65736f;
  --color-line: #d9e4de;
  --color-primary: #2f7568;
  --color-primary-dark: #245c53;
  --color-primary-soft: #dcefeb;
  --color-blue: #3d6f93;
  --color-blue-soft: #e6f0f8;
  --color-sun: #b7791f;
  --color-sun-soft: #fff1d3;
  --color-rose-soft: #fcebed;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 8px 22px rgba(42, 54, 48, 0.08);
  --shadow-md: 0 18px 42px rgba(42, 54, 48, 0.12);
  --focus-ring: 0 0 0 4px rgba(47, 117, 104, 0.2);
  --container: 920px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(
      circle at 18% 8%,
      rgba(255, 246, 215, 0.72) 0,
      rgba(255, 246, 215, 0) 28%
    ),
    radial-gradient(
      circle at 86% 18%,
      rgba(202, 226, 241, 0.68) 0,
      rgba(202, 226, 241, 0) 30%
    ),
    radial-gradient(
      circle at 70% 90%,
      rgba(213, 239, 229, 0.76) 0,
      rgba(213, 239, 229, 0) 34%
    ),
    linear-gradient(135deg, #e8f4ed 0%, #f5eedf 48%, #e7f1f7 100%),
    var(--color-bg);
  color: var(--color-text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans TC",
    sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 20;
  transform: translateY(-150%);
  border-radius: 999px;
  background: var(--color-primary);
  color: #ffffff;
  padding: 10px 14px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease;
}

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

.page-shell {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 32px;
}

.cover-slot[hidden] {
  display: none;
}

.cover-panel {
  margin: 0 0 18px;
  overflow: hidden;
  border: 1px solid rgba(61, 111, 147, 0.18);
  border-radius: var(--radius-lg);
  background: var(--color-surface-blue);
  box-shadow: var(--shadow-sm);
}

.cover-slot + .hero,
.hero + .cover-slot .cover-panel {
  margin-top: 18px;
}

.cover-panel img {
  width: 100%;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

.hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  border: 1px solid rgba(47, 117, 104, 0.18);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(255, 253, 248, 0.98),
    rgba(238, 248, 244, 0.98)
  );
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.hero__mark {
  display: grid;
  width: 96px;
  height: 96px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(47, 117, 104, 0.12);
  border-radius: 24px;
  background: var(--color-primary-soft);
}

.hero__mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  padding: 16px;
}

.hero__mark img[src^="data:image/"] {
  padding: 0;
}

.hero__content {
  min-width: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-bottom: 12px;
  border: 1px solid rgba(47, 117, 104, 0.22);
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  padding: 4px 12px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0;
}

.hero h1 {
  margin: 0;
  font-size: 2.6rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.hero__subtitle {
  margin: 10px 0 0;
  color: var(--color-primary-dark);
  font-size: 1.25rem;
  font-weight: 800;
}

.hero__description {
  max-width: 46rem;
  margin: 10px 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.section {
  margin-top: 26px;
}

.section__heading {
  margin-bottom: 12px;
  padding: 0 4px;
}

.section__heading--inside {
  padding: 0;
}

.section h2 {
  margin: 0;
  color: var(--color-text);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0;
}

.announcement-list,
.link-stack,
.entry-grid,
.content-stack,
.weekday-groups {
  display: grid;
  gap: 12px;
}

.entry-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.entry-card,
.content-card {
  position: relative;
  display: grid;
  gap: 12px;
  border: 1px solid rgba(61, 111, 147, 0.16);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.entry-card:nth-child(3n + 1),
.content-card:nth-child(3n + 1) {
  background: linear-gradient(135deg, #fffdf8, #eef8f4);
}

.entry-card:nth-child(3n + 2),
.content-card:nth-child(3n + 2) {
  background: linear-gradient(135deg, #fffdf8, var(--color-blue-soft));
}

.entry-card:nth-child(3n + 3),
.content-card:nth-child(3n + 3) {
  background: linear-gradient(135deg, #fffdf8, var(--color-sun-soft));
}

.entry-card {
  min-height: 180px;
  padding-right: 70px;
}

.entry-card h3,
.content-card h3,
.weekday-group h3 {
  margin: 0;
  font-size: 1.38rem;
  line-height: 1.35;
}

.entry-card p,
.content-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.14rem;
  line-height: 1.7;
}

.entry-card__arrow {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1.55rem;
  font-weight: 900;
}

.content-card--link {
  padding-right: 70px;
}

.content-card--muted {
  border-style: dashed;
  opacity: 0.78;
}

.content-card--schedule-row {
  gap: 8px;
  padding: 22px 24px;
}

.content-card--schedule-row h3 {
  display: block;
  font-size: 1.28rem;
  line-height: 1.9;
  letter-spacing: 0.01em;
  word-break: break-word;
}

.course-note {
  margin: 2px 0 0;
  color: var(--color-muted);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.6;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--color-muted);
  font-size: 1.04rem;
  font-weight: 800;
  line-height: 1.5;
}

.card-meta span {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  padding: 5px 12px;
}

.status-pill {
  justify-self: start;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  padding: 6px 14px;
  font-size: 1.02rem;
  font-weight: 900;
}

.status-pill--closed {
  background: var(--color-rose-soft);
  color: #9c2f3a;
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 50px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.84);
  padding: 10px 16px;
  color: var(--color-primary-dark);
  font-size: 1.08rem;
  font-weight: 900;
  text-decoration: none;
}

.page-nav .home-return {
  border-color: rgba(47, 117, 104, 0.28);
  background: var(--color-primary);
  color: #ffffff;
}

.page-section {
  margin-top: 18px;
}

.page-heading {
  margin-bottom: 18px;
}

.page-heading p {
  margin: 0 0 6px;
  color: var(--color-primary-dark);
  font-size: 1.08rem;
  font-weight: 900;
}

.page-heading h2 {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.28;
}

.weekday-group {
  display: grid;
  gap: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.78);
  padding: 20px;
}

.schedule-tabs-area {
  display: grid;
  gap: 14px;
}

.schedule-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.schedule-tab {
  min-height: 48px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.92);
  color: var(--color-primary-dark);
  padding: 10px 18px;
  cursor: pointer;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 900;
}

.schedule-tab.is-active {
  border-color: rgba(47, 117, 104, 0.36);
  background: var(--color-primary);
  color: #ffffff;
}

.schedule-day-panels {
  display: grid;
  gap: 14px;
}

.schedule-day-panel {
  display: grid;
  gap: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.78);
  padding: 20px;
}

.schedule-day-panel[hidden] {
  display: none;
}

.schedule-day-panel h3 {
  margin: 0;
  font-size: 1.38rem;
  line-height: 1.35;
}

.newsletter-section {
  gap: 10px;
}

.activity-card .button {
  justify-self: start;
  min-height: 56px;
  margin-top: 6px;
  font-size: 1.08rem;
  text-decoration: none;
}

.announcement {
  border: 1px solid rgba(183, 121, 31, 0.18);
  border-left: 7px solid var(--color-sun);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #fffdf8, var(--color-sun-soft));
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  animation: cardIn 520ms ease both;
}

.announcement__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
  color: var(--color-muted);
  font-size: 0.98rem;
  font-weight: 700;
}

.announcement--pinned {
  border-left-color: #d79622;
  background: linear-gradient(
    135deg,
    rgba(255, 253, 248, 0.98),
    rgba(255, 242, 211, 0.94)
  );
  box-shadow: 0 14px 30px rgba(121, 86, 31, 0.12);
}

.announcement__icon {
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  background: #fff8e7;
  color: var(--color-sun);
}

.announcement__icon svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.announcement__pin {
  border-radius: 999px;
  background: #fff8e7;
  color: var(--color-sun);
  padding: 3px 11px;
  box-shadow: inset 0 0 0 1px rgba(183, 121, 31, 0.14);
}

.announcement h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.35;
}

.announcement p {
  margin: 8px 0 0;
  color: var(--color-text);
}

.empty-state {
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.76);
  padding: 28px;
  color: var(--color-muted);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.7;
  text-align: center;
}

.main-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: 18px;
  border: 1px solid rgba(61, 111, 147, 0.16);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.main-link:nth-child(3n + 1) {
  background: linear-gradient(135deg, #fffdf8, #eef8f4);
}

.main-link:nth-child(3n + 2) {
  background: linear-gradient(135deg, #fffdf8, var(--color-blue-soft));
}

.main-link:nth-child(3n + 3) {
  background: linear-gradient(135deg, #fffdf8, var(--color-rose-soft));
}

.main-link:hover {
  transform: translateY(-2px);
  border-color: rgba(47, 117, 104, 0.4);
  box-shadow: 0 16px 34px rgba(47, 117, 104, 0.14);
}

.main-link:active {
  transform: translateY(0) scale(0.985);
}

.main-link:focus-visible {
  outline: 3px solid rgba(47, 117, 104, 0.42);
  outline-offset: 4px;
  box-shadow:
    var(--focus-ring),
    0 16px 34px rgba(47, 117, 104, 0.14);
}

.main-link__content {
  display: grid;
  min-width: 0;
  gap: 4px;
}

.main-link__title {
  color: var(--color-text);
  font-size: 1.2rem;
  font-weight: 900;
}

.main-link__description {
  color: var(--color-muted);
  font-size: 1rem;
}

.main-link__arrow {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1.35rem;
  font-weight: 900;
  transition:
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.main-link:nth-child(3n + 2) .main-link__arrow {
  background: var(--color-blue-soft);
  color: var(--color-blue);
}

.main-link:nth-child(3n + 3) .main-link__arrow {
  background: var(--color-sun-soft);
  color: var(--color-sun);
}

.main-link:hover .main-link__arrow {
  transform: translateX(2px);
  background: var(--color-primary);
  color: #ffffff;
}

.main-link:active .main-link__arrow {
  transform: translateX(4px) scale(0.96);
}

.section--split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 16px;
}

.info-panel {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.9);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.info-panel:nth-child(2) {
  background: var(--color-surface-blue);
}

.contact-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.contact-row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-line);
}

.contact-row:first-child {
  border-top: 0;
}

.contact-row dt {
  color: var(--color-muted);
  font-weight: 800;
}

.contact-row dd {
  margin: 0;
  word-break: break-word;
}

.share-url {
  overflow-wrap: anywhere;
  margin: 0 0 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.72);
  padding: 12px;
  color: var(--color-primary-dark);
  font-weight: 800;
}

.button {
  min-height: 52px;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
}

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

.button--primary:hover {
  background: var(--color-primary-dark);
}

.copy-status {
  min-height: 1.5em;
  margin: 10px 0 0;
  color: var(--color-primary-dark);
  font-weight: 800;
}

.footer {
  margin: 34px auto 0;
  color: var(--color-muted);
  font-size: 0.98rem;
  text-align: center;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

  .announcement {
    animation: none;
  }

  .main-link:hover,
  .main-link:active,
  .main-link:hover .main-link__arrow,
  .main-link:active .main-link__arrow {
    transform: none;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 18px;
  }

  .page-shell {
    width: min(100% - 24px, var(--container));
    padding-top: 24px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 22px;
  }

  .hero__mark {
    width: 82px;
    height: 82px;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .section--split {
    grid-template-columns: 1fr;
  }

  .entry-grid {
    grid-template-columns: 1fr;
  }

  .entry-card,
  .content-card {
    padding: 20px;
  }

  .entry-card {
    min-height: 158px;
    padding-right: 70px;
  }

  .entry-card h3,
  .content-card h3,
  .weekday-group h3 {
    font-size: 1.32rem;
  }

  .entry-card p,
  .content-card p {
    font-size: 1.08rem;
  }

  .page-heading h2 {
    font-size: 1.62rem;
  }
}

@media (max-width: 520px) {
  .page-shell {
    width: min(100% - 20px, var(--container));
  }

  .hero,
  .cover-panel {
    border-radius: 16px;
  }

  .hero h1 {
    font-size: 1.85rem;
  }

  .main-link {
    min-height: 88px;
    padding: 16px;
  }

  .main-link__arrow {
    width: 38px;
    height: 38px;
  }

  .contact-row {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}

.month-exception-panel {
  display: grid;
  gap: 8px;
  border: 1px solid rgba(47, 117, 104, 0.18);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #fffdf8, #eef8f4);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}

.month-exception-panel--muted {
  border-style: dashed;
  opacity: 0.78;
}

.month-exception-panel__header {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.month-exception-panel__chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  padding: 5px 13px;
  font-size: 1rem;
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
}

.month-exception-panel__title {
  margin: 0;
  color: var(--color-text);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1.45;
}

.month-exception-panel__time {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1.5;
}

.month-exception-panel__note {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.6;
}