/* UDLB Landing Styles - higher contrast, readable defaults */
:root{
  --udlb-bg0:#05060b;
  --udlb-bg1:#0b1024;
  --udlb-card: rgba(255,255,255,.10);
  --udlb-card2: rgba(255,255,255,.14);
  --udlb-line: rgba(255,255,255,.18);
  --udlb-text: rgba(255,255,255,.96);
  --udlb-muted: rgba(255,255,255,.78);
  --udlb-muted2: rgba(255,255,255,.62);
  --udlb-accent:#8aa7ff;
  --udlb-accent2:#69e6c0;
  --udlb-gold:#ffd18a;
  --udlb-shadow: 0 18px 60px rgba(0,0,0,.55);
  --udlb-radius: 18px;
  --udlb-radius2: 26px;
  --udlb-max: 1160px;
  --udlb-pad: clamp(18px, 2.4vw, 30px);
  --udlb-h1: clamp(32px, 4.2vw, 54px);
  --udlb-h2: clamp(22px, 2.6vw, 34px);
  --udlb-h3: clamp(18px, 2vw, 22px);
  --udlb-p:  clamp(15px, 1.2vw, 16.5px);
}

.udlb{
  color: var(--udlb-text);
  background:
    radial-gradient(1200px 700px at 20% 15%, rgba(138,167,255,.22), transparent 60%),
    radial-gradient(900px 650px at 80% 22%, rgba(105,230,192,.16), transparent 55%),
    radial-gradient(1100px 760px at 50% 88%, rgba(255,209,138,.10), transparent 60%),
    linear-gradient(180deg, var(--udlb-bg0), var(--udlb-bg1));
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

.udlb *{ box-sizing:border-box; }
.udlb a{ color: inherit; text-decoration: none; }

.udlb-wrap{ max-width: var(--udlb-max); margin: 0 auto; padding: 0 var(--udlb-pad); }
.udlb-block{ margin: 18px 0; }

/* Topbar */
.udlb-topbar{
  border-bottom: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.22);
  backdrop-filter: blur(10px);
}
.udlb-topbar .udlb-wrap{
  display:flex; align-items:center; justify-content:space-between;
  gap: 14px; padding: 10px var(--udlb-pad);
}
.udlb-brand{ display:flex; align-items:center; gap: 10px; font-weight: 800; letter-spacing: .2px; }
.udlb-logo{
  width: 34px; height: 34px; border-radius: 12px;
  background: linear-gradient(135deg, rgba(138,167,255,.95), rgba(105,230,192,.95));
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.udlb-brand small{ display:block; font-weight:650; color: var(--udlb-muted2); letter-spacing: .3px; margin-top: 2px; }

.udlb-pill{
  display:inline-flex; align-items:center; gap: 10px;
  padding: 10px 12px; border-radius: 999px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--udlb-muted);
  font-size: 13px;
  white-space: nowrap;
}
.udlb-dot{ width: 10px; height: 10px; border-radius: 999px; background: var(--udlb-accent2); box-shadow: 0 0 0 6px rgba(105,230,192,.14); }

/* Cards */
.udlb-card{
  border-radius: var(--udlb-radius2);
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.08));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: var(--udlb-shadow);
  overflow: hidden;
  position: relative;
}
.udlb-card-inner{ position: relative; padding: clamp(18px, 2.3vw, 30px); }
.udlb-kicker{
  display:inline-flex; align-items:center; gap: 10px;
  padding: 10px 12px; border-radius: 999px;
  background: rgba(0,0,0,.34);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--udlb-muted);
  font-size: 13px;
}
.udlb-kicker b{ color: rgba(255,255,255,.96); font-weight: 800; }

.udlb-h1{ margin: 14px 0 12px; font-size: var(--udlb-h1); line-height: 1.06; letter-spacing: -0.6px; }
.udlb-sub{ color: var(--udlb-muted); font-size: clamp(16px, 1.35vw, 18px); line-height: 1.65; max-width: 70ch; margin-bottom: 18px; }

.udlb-badges{ display:flex; flex-wrap:wrap; gap: 10px; margin: 12px 0 18px; }
.udlb-badge{
  padding: 10px 12px; border-radius: 14px;
  background: rgba(0,0,0,.30);
  border: 1px solid rgba(255,255,255,.12);
  color: var(--udlb-muted);
  font-size: 13.5px;
  display:flex; align-items:center; gap: 8px;
}
.udlb-cta{ display:flex; flex-wrap:wrap; gap: 12px; align-items:center; margin-top: 10px; }
.udlb-btn{
  display:inline-flex; align-items:center; justify-content:center; gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.10);
  color: rgba(255,255,255,.96);
  font-weight: 800;
  cursor:pointer;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
  user-select:none;
}
.udlb-btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.24); }
.udlb-btn-primary{
  background: linear-gradient(135deg, rgba(138,167,255,.98), rgba(105,230,192,.95));
  color: rgba(10,12,20,.98);
  border-color: rgba(255,255,255,.24);
}
.udlb-btn-primary:hover{ transform: translateY(-1px) scale(1.01); }

.udlb-section{
  border-radius: var(--udlb-radius);
  background: rgba(0,0,0,.30);
  border: 1px solid rgba(255,255,255,.14);
  padding: 18px;
  box-shadow: 0 12px 44px rgba(0,0,0,.38);
}
.udlb-title{ margin: 0 0 8px; font-size: var(--udlb-h2); letter-spacing: -.3px; }
.udlb-desc{ margin: 0; font-size: var(--udlb-p); color: var(--udlb-muted); line-height: 1.75; }

.udlb-kv{
  display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px;
}
@media (max-width: 980px){ .udlb-kv{ grid-template-columns: 1fr; } }
.udlb-kv-item{
  padding: 12px; border-radius: 14px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--udlb-muted);
  line-height: 1.5; font-size: 13.5px;
}
.udlb-kv-item b{ display:block; color: rgba(255,255,255,.96); margin-bottom: 4px; font-size: 12.5px; }

/* List bullets */
.udlb-list{ margin: 14px 0 0; padding: 0; list-style:none; display:flex; flex-direction:column; gap: 10px; }
.udlb-li{
  display:flex; gap: 10px; align-items:flex-start;
  padding: 12px 12px;
  border-radius: 14px;
  background: rgba(0,0,0,.28);
  border: 1px solid rgba(255,255,255,.12);
  color: var(--udlb-muted);
  line-height: 1.6;
  font-size: var(--udlb-p);
}
.udlb-check{
  width: 18px; height: 18px; border-radius: 6px;
  background: rgba(105,230,192,.24);
  border: 1px solid rgba(105,230,192,.44);
  display:inline-flex; align-items:center; justify-content:center;
  margin-top: 2px;
  flex: 0 0 auto;
}

/* Calculator */
.udlb-calc{
  border-radius: var(--udlb-radius);
  background: rgba(0,0,0,.34);
  border: 1px solid rgba(255,255,255,.14);
  padding: 16px;
}
.udlb-formgrid{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
@media (max-width: 980px){ .udlb-formgrid{ grid-template-columns: 1fr; } }
.udlb-field{ display:flex; flex-direction:column; gap: 6px; }
.udlb-label{ font-size: 12.5px; color: var(--udlb-muted2); }
.udlb-input,.udlb-select,.udlb-textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.10);
  color: rgba(255,255,255,.96);
  outline:none;
}
.udlb-textarea{ min-height: 96px; resize: vertical; }
.udlb-out{
  margin-top: 12px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.16);
  color: rgba(255,255,255,.94);
  line-height: 1.6;
  font-size: 13.5px;
}
.udlb-out b{ color: var(--udlb-accent2); }

/* SKU grid */
.udlb-sku-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
@media (max-width: 980px){ .udlb-sku-grid{ grid-template-columns: 1fr; } }
.udlb-sku{
  border-radius: 18px;
  background: rgba(0,0,0,.30);
  border: 1px solid rgba(255,255,255,.14);
  padding: 16px;
}
.udlb-sku-name{ font-size: 17px; font-weight: 900; margin: 0 0 6px; }
.udlb-sku-desc{ margin: 0 0 12px; color: var(--udlb-muted); font-size: 13.5px; line-height: 1.65; }
.udlb-sku-kv{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.udlb-sku-kv > div{
  padding: 10px; border-radius: 14px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  color: var(--udlb-muted);
  font-size: 13px; line-height: 1.45;
}

/* Steps */
.udlb-steps{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
@media (max-width: 980px){ .udlb-steps{ grid-template-columns: 1fr; } }
.udlb-step{
  border-radius: 18px;
  background: rgba(0,0,0,.26);
  border: 1px solid rgba(255,255,255,.14);
  padding: 16px;
}
.udlb-num{
  width: 34px; height: 34px; border-radius: 12px;
  background: rgba(138,167,255,.22);
  border: 1px solid rgba(138,167,255,.42);
  display:flex; align-items:center; justify-content:center;
  font-weight: 900; margin-bottom: 10px;
}

/* FAQ */
.udlb-faq details{
  border-radius: 16px;
  background: rgba(0,0,0,.26);
  border: 1px solid rgba(255,255,255,.14);
  padding: 14px 14px;
}
.udlb-faq details + details{ margin-top: 10px; }
.udlb-faq summary{
  cursor:pointer; font-weight: 900; color: rgba(255,255,255,.96);
  list-style:none; outline:none;
}
.udlb-faq summary::-webkit-details-marker{ display:none; }
.udlb-faq p{ margin: 10px 0 0; color: var(--udlb-muted); line-height: 1.75; font-size: var(--udlb-p); }

/* Final */
.udlb-final{
  border-radius: var(--udlb-radius2);
  background: linear-gradient(135deg, rgba(138,167,255,.20), rgba(105,230,192,.14));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: var(--udlb-shadow);
  padding: 18px;
  display:flex; justify-content:space-between; align-items:center; gap: 12px; flex-wrap:wrap;
}
.udlb-footnote{ color: rgba(255,255,255,.58); font-size: 12.5px; margin-top: 12px; line-height: 1.6; }