:root{
  --bg: #f6f1ea;
  --card: rgba(255,255,255,0.78);
  --text: #2f2a26;
  --muted: #7b726b;
  --primary: #b8745a;
  --primary-2: #8f6f5f;
  --ring: rgba(184,116,90,0.28);
  --shadow: 0 18px 50px rgba(47,42,38,0.12);
  --radius-xl: 26px;
  --radius-lg: 20px;
}

body{
  font-family: system-ui, -apple-system, "Segoe UI", Arial, "Noto Sans TC", sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

body::before{
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: -1;
}

.app-bg{
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 15% 0%, rgba(184,116,90,0.12), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(122,149,133,0.12), transparent 55%),
    radial-gradient(900px 500px at 50% 100%, rgba(143,111,95,0.10), transparent 60%);
  pointer-events: none;
  z-index: -2;
}

.app-nav{
  background: rgba(246,241,234,0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(47,42,38,0.08);
}

.app-brand{
  font-weight: 700;
  letter-spacing: 0.5px;
}

.app-card{
  background: var(--card);
  border: 1px solid rgba(47,42,38,0.08);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.form-control, .form-select{
  border-radius: var(--radius-lg);
  border: 1px solid rgba(47,42,38,0.10);
  padding: 0.9rem 1rem;
}

.form-control:focus, .form-select:focus{
  border-color: var(--primary);
  box-shadow: 0 0 0 0.25rem var(--ring);
}

.btn{
  border-radius: 999px;
  padding: 0.75rem 1.1rem;
}

.btn-primary{
  background: linear-gradient(180deg, rgba(184,116,90,1), rgba(164,97,73,1));
  border: none;
  box-shadow: 0 12px 28px rgba(184,116,90,0.22);
}

.btn-primary:hover{
  filter: brightness(0.98);
}

.text-muted{
  color: var(--muted) !important;
}

.k-badge{
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  background: rgba(184,116,90,0.10);
  color: var(--primary-2);
  border: 1px solid rgba(184,116,90,0.18);
}