:root {
  color-scheme: dark;
  --bg: #070503;
  --panel: rgba(18, 14, 10, 0.86);
  --panel-soft: rgba(255, 255, 255, 0.06);
  --gold: #d8b15f;
  --gold-2: #f1d99a;
  --text: #fff7e8;
  --muted: #cfbda2;
  --danger: #f6d6b9;
  --line: rgba(216, 177, 95, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(222, 172, 72, 0.18), transparent 32rem),
    radial-gradient(circle at 80% 20%, rgba(114, 62, 15, 0.22), transparent 28rem),
    linear-gradient(180deg, #090603 0%, #120805 45%, #050403 100%);
  color: var(--text);
}

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

.page-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 28px 16px 52px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 42%),
    var(--panel);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.42);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -18% -45% 24%;
  height: 220px;
  background: radial-gradient(circle, rgba(216, 177, 95, 0.22), transparent 68%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--gold-2);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 10px;
  font-size: clamp(2.4rem, 10vw, 5.3rem);
  line-height: 0.95;
  color: var(--gold-2);
  text-shadow: 0 0 26px rgba(216, 177, 95, 0.32);
}

.lead {
  max-width: 780px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: clamp(1rem, 3.5vw, 1.28rem);
  line-height: 1.75;
}

.notice,
.disclaimer {
  border: 1px solid rgba(246, 214, 185, 0.32);
  background: rgba(55, 29, 14, 0.66);
  color: var(--danger);
}

.notice {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 700;
  line-height: 1.55;
}

.seminar-card {
  display: grid;
  gap: 18px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(12, 9, 6, 0.82);
}

.seminar-card img {
  max-height: 760px;
  object-fit: contain;
  border-radius: 20px;
  background: #000;
}

.seminar-copy {
  padding: 4px 6px 8px;
}

.seminar-copy h2,
.section-title h2,
.disclaimer h2,
.cta h2 {
  margin-bottom: 10px;
  color: var(--gold-2);
  font-size: clamp(1.6rem, 5vw, 2.8rem);
}

.seminar-copy p,
.card-copy p,
.cta p,
.small {
  color: var(--muted);
  line-height: 1.72;
}

.grid-section {
  margin-top: 34px;
}

.section-title {
  margin-bottom: 16px;
}

.image-card {
  overflow: hidden;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.32);
}

.image-card img {
  background: #111;
}

.card-copy {
  padding: 18px;
}

.card-copy h3 {
  margin-bottom: 8px;
  color: var(--gold-2);
  font-size: 1.28rem;
}

.disclaimer {
  margin-top: 28px;
  padding: 22px;
  border-radius: 24px;
}

.disclaimer ul {
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.8;
}

.cta {
  margin-top: 22px;
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(216, 177, 95, 0.15), rgba(255, 255, 255, 0.04));
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  margin: 8px 0 12px;
  padding: 0 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f7d889, #c89532);
  color: #191007;
  font-weight: 900;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(216, 177, 95, 0.26);
}

.small {
  margin-bottom: 0;
  font-size: 0.86rem;
}

@media (min-width: 780px) {
  .page-shell {
    padding: 46px 24px 72px;
  }

  .seminar-card {
    grid-template-columns: minmax(280px, 0.72fr) 1fr;
    align-items: center;
    padding: 20px;
  }

  .grid-section {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .section-title,
  .wide {
    grid-column: 1 / -1;
  }

  .wide {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }

  .image-card {
    margin-bottom: 0;
  }
}