body {
  margin: 0;
  font-family: 'Nanum Gothic', sans-serif;
  background: linear-gradient(135deg, #b19cd9, #ffe4e1, #add8e6);
  color: #333;
  text-align: center;
}

header {
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  border-bottom: 1px solid rgba(255,255,255,0.4);
}

.logo {
  height: 60px;
  margin-bottom: 0.5rem;
}

.titles h1 {
  margin: 0;
  font-size: 1.8rem;
  color: #800080;
}

.titles h2 {
  margin: 0.2rem 0;
  font-size: 1.1rem;
  color: #d16ba5;
}

nav a {
  margin: 0 0.8rem;
  color: #4b0082;
  text-decoration: none;
  font-weight: bold;
  padding: 0.3rem 0.6rem;
  border-radius: 0.5rem;
  transition: background 0.3s;
}

nav a:hover {
  background: rgba(255,255,255,0.4);
}

.hero {
  padding: 4rem 1rem;
}

.hero h2 {
  font-size: 2.2rem;
  color: #800080;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

.btn {
  background: linear-gradient(45deg, #d16ba5, #86a8e7);
  color: white;
  padding: 0.8rem 1.5rem;
  text-decoration: none;
  border-radius: 2rem;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}

.btn:hover {
  transform: scale(1.05);
}

footer {
  margin-top: 2rem;
  padding: 1rem;
  font-size: 0.8rem;
  color: #555;
  background: rgba(255,255,255,0.2);
}

/* content & form */
.content {
  padding: 2rem 1rem;
}

table.board {
  width: 90%;
  max-width: 600px;
  margin: auto;
  border-collapse: collapse;
  background: rgba(255,255,255,0.1);
}

.board th, .board td {
  border: 1px solid rgba(255,255,255,0.3);
  padding: 0.5rem;
}

form {
  max-width: 400px;
  margin: auto;
}

input, textarea {
  width: 100%;
  margin: 0.5rem 0;
  padding: 0.5rem;
  border-radius: 0.5rem;
  border: none;
}

button {
  background: #ff69b4;
  color: white;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 1rem;
  cursor: pointer;
}

button:hover {
  background: #ff1493;
}