:root {
  --ld-navy: #0b2c5c;
  --ld-navy-deep: #071e42;
  --ld-gold: #c5a06d;
  --ld-gold-soft: #f7f1e6;
  --ld-ink: #0f172a;
  --ld-muted: #64748b;
  --ld-line: #e2e8f0;
  --ld-font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --ld-en: "Montserrat", "Noto Sans TC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.ld-body {
  margin: 0;
  font-family: var(--ld-font);
  color: var(--ld-ink);
  background: #fff;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { letter-spacing: 0.02em; }

.ld-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 32px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ld-line);
}
.ld-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ld-navy);
}
.ld-brand strong { display: block; font-family: var(--ld-en); font-size: 15px; line-height: 1.1; }
.ld-brand small { display: block; font-size: 12px; color: var(--ld-gold); }
.ld-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--ld-navy);
  color: #fff;
  font-family: var(--ld-en);
  font-weight: 700;
}
.ld-nav-links { display: flex; gap: 18px; margin-left: auto; font-size: 14px; color: #334155; }
.ld-nav-links a:hover { color: var(--ld-navy); }
.ld-nav-actions { display: flex; align-items: center; gap: 10px; }
.ld-link { font-size: 14px; color: var(--ld-navy); font-weight: 600; padding: 8px 10px; }

.ld-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
}
.ld-btn-gold { background: var(--ld-gold); color: #1f1408; }
.ld-btn-gold:hover { filter: brightness(1.05); }
.ld-btn-ghost { border: 1px solid #cbd5e1; background: #fff; color: var(--ld-navy); }

.ld-hero {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  padding: 56px 48px 72px;
  background:
    linear-gradient(180deg, #f8fafc 0%, #eef3f9 55%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.ld-hero:after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -40px;
  width: 420px;
  height: 280px;
  background: linear-gradient(135deg, rgba(11,44,92,.12), rgba(197,160,109,.18));
  border-radius: 40% 60% 50% 40%;
  pointer-events: none;
}
.ld-kicker { color: var(--ld-gold); font-weight: 700; margin: 0 0 10px; letter-spacing: .12em; font-size: 13px; }
.ld-hero h1 { margin: 0; font-size: clamp(32px, 4.4vw, 52px); color: var(--ld-navy); line-height: 1.25; }
.ld-lead { margin: 18px 0 0; color: #475569; font-size: 18px; line-height: 1.7; }
.ld-hero-cta { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.ld-trial-note { margin: 16px 0 0; color: var(--ld-muted); font-size: 13px; }

.ld-hero-visual { position: relative; z-index: 1; }
.ld-hero-shot {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
  border-radius: 18px;
  border: 1px solid #dbe3ee;
  box-shadow: 0 24px 50px rgba(11,44,92,.12);
  background: #fff;
}

.ld-flow, .ld-modules, .ld-insight, .ld-scenes { padding: 72px 48px; text-align: center; }
.ld-flow h2, .ld-modules h2, .ld-insight h2, .ld-scenes h2, .ld-work h2, .ld-ai h2, .ld-cta h2 {
  margin: 0;
  color: var(--ld-navy);
  font-size: clamp(24px, 3vw, 34px);
}
.ld-sub { color: var(--ld-muted); }
.ld-flow-row {
  list-style: none;
  padding: 0;
  margin: 36px auto 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 980px;
}
.ld-flow-row li {
  background: var(--ld-navy);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 14px;
}

.ld-cards {
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1080px;
  text-align: left;
}
.ld-cards-3 { grid-template-columns: repeat(3, 1fr); }
.ld-cards-4 { grid-template-columns: repeat(4, 1fr); }
.ld-cards article {
  border: 1px solid var(--ld-line);
  border-radius: 16px;
  padding: 22px;
  background: #fff;
}
.ld-cards h3 { margin: 0 0 8px; color: var(--ld-navy); font-size: 18px; }
.ld-cards p { margin: 0; color: #475569; line-height: 1.7; font-size: 14px; }

.ld-work {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  padding: 72px 48px;
  align-items: center;
  background: #f8fafc;
}
.ld-work ol { margin: 22px 0 0; padding-left: 18px; color: #334155; line-height: 1.9; }
.ld-work-shot {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
  border-radius: 16px;
  border: 1px solid #dbe3ee;
  background: #fff;
  box-shadow: 0 18px 40px rgba(11,44,92,.10);
}

.ld-ai {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  padding: 72px 48px;
  background: linear-gradient(120deg, #071e42, #0b3a7a 55%, #123f7a);
  color: #fff;
  align-items: center;
}
.ld-ai h2 { color: #fff; }
.ld-ai p { color: rgba(255,255,255,.82); line-height: 1.8; }
.ld-ai-orb {
  width: min(280px, 80%);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 40% 35%, #7dd3fc, #2563eb 45%, #0b2c5c 78%);
  box-shadow: 0 0 60px rgba(125, 211, 252, .45);
  font-size: 42px;
  font-weight: 700;
}

.ld-cta {
  padding: 80px 24px;
  text-align: center;
  background: linear-gradient(180deg, #0b2c5c, #071e42);
  color: #fff;
}
.ld-cta h2, .ld-cta p { color: #fff; }
.ld-cta .ld-btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }

.ld-plans { padding: 72px 48px; text-align: center; background: #f8fafc; }
.ld-plans h2 { margin: 0; color: var(--ld-navy); font-size: clamp(24px, 3vw, 34px); }
.ld-plan-grid {
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1080px;
  text-align: left;
}
.ld-plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--ld-line);
  border-radius: 16px;
  padding: 24px 22px 22px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(11,44,92,.06);
}
.ld-plan-card.is-popular {
  border-color: var(--ld-gold);
  box-shadow: 0 0 0 1px rgba(197,160,109,.35), 0 16px 32px rgba(11,44,92,.10);
}
.ld-plan-tag {
  position: absolute;
  top: -11px;
  right: 18px;
  background: var(--ld-gold);
  color: #1f1408;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
}
.ld-plan-card h3 { margin: 0 0 14px; color: var(--ld-navy); font-size: 24px; }
.ld-plan-price-row { display: flex; align-items: baseline; gap: 8px; }
.ld-plan-price {
  font-family: var(--ld-en);
  font-size: 34px;
  font-weight: 700;
  color: var(--ld-navy);
  line-height: 1;
}
.ld-plan-unit { color: var(--ld-muted); font-size: 14px; }
.ld-plan-sub { margin: 8px 0 14px; color: var(--ld-muted); font-size: 13px; }
.ld-plan-card ul {
  margin: 0 0 20px;
  padding-left: 18px;
  color: #334155;
  line-height: 1.8;
  font-size: 14px;
  flex: 1;
}
.ld-plan-card .ld-btn { width: 100%; }

.ld-footer { background: #071627; color: #fff; padding: 48px 48px 24px; }
.ld-footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1.3fr 1fr; gap: 28px; }
.ld-footer strong { display: block; margin: 0 0 10px; font-size: 16px; color: #fff; }
.ld-footer h3 { margin: 0 0 12px; color: #fff; font-size: 15px; font-weight: 700; }
.ld-footer a, .ld-footer p { display: block; margin: 0 0 8px; font-size: 14px; line-height: 1.65; color: #fff; font-weight: 400; }
.ld-footer a:hover { color: var(--ld-gold); }
.ld-copy { margin: 28px 0 0; border-top: 1px solid rgba(255,255,255,.18); padding-top: 16px; font-size: 13px; color: #fff; }

@media (max-width: 1100px) {
  .ld-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .ld-nav-links { display: none; }
  .ld-hero, .ld-work, .ld-ai, .ld-footer-grid, .ld-plan-grid { grid-template-columns: 1fr; }
  .ld-cards, .ld-cards-3, .ld-cards-4 { grid-template-columns: 1fr; }
  .ld-hero, .ld-flow, .ld-modules, .ld-insight, .ld-scenes, .ld-work, .ld-ai, .ld-plans, .ld-footer { padding-left: 20px; padding-right: 20px; }
}