body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #f8fafc;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.back-link {
  color: #93c5fd;
  text-decoration: none;
  display: inline-block;
  margin-bottom: 20px;
}

.hero {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.badge {
  display: inline-block;
  background: #38bdf8;
  color: #082f49;
  font-weight: bold;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  margin-bottom: 15px;
}

.hero h1 {
  margin: 0 0 15px;
  font-size: 40px;
}

.lead {
  font-size: 18px;
  line-height: 1.8;
  color: #e2e8f0;
}

.hero-buttons {
  margin-top: 25px;
}

.btn {
  display: inline-block;
  margin-right: 10px;
  margin-bottom: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  text-decoration: none;
  color: white;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.15);
}

.btn.primary {
  background: linear-gradient(90deg, #06b6d4, #3b82f6);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.card {
  background: rgba(255,255,255,0.08);
  padding: 25px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.12);
}

.flow {
  margin-top: 35px;
  background: rgba(255,255,255,0.06);
  padding: 25px;
  border-radius: 18px;
}

.flow ol {
  line-height: 2;
}

.form-box, .result-box, .history-box {
  background: #ffffff;
  color: #1e293b;
  border-radius: 16px;
  padding: 30px;
  margin-top: 25px;
}

input[type="text"], textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  box-sizing: border-box;
  margin-top: 8px;
  margin-bottom: 15px;
  font-size: 16px;
}

button, input[type="submit"] {
  background: linear-gradient(90deg, #06b6d4, #2563eb);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 16px;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.score-card {
  background: #f1f5f9;
  border-radius: 14px;
  padding: 20px;
  text-align: center;
}

.score-card h3 {
  margin: 0 0 10px;
  font-size: 15px;
}

.score-num {
  font-size: 34px;
  font-weight: bold;
  color: #0f172a;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

th, td {
  border-bottom: 1px solid #e2e8f0;
  padding: 12px;
  text-align: left;
}

th {
  background: #f8fafc;
}

.tag-good {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: #dcfce7;
  color: #166534;
  font-size: 12px;
}

.tag-bad {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: #fee2e2;
  color: #991b1b;
  font-size: 12px;
}