* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #111827 45%, #1e293b 100%);
  color: #e5eefc;
}

a {
  text-decoration: none;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  padding: 40px 0 20px;
}

.hero-inner {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 24px;
  padding: 36px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  backdrop-filter: blur(10px);
}

.mini {
  color: #7dd3fc;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

h1 {
  margin: 0 0 12px;
  font-size: 40px;
  line-height: 1.2;
}

.lead {
  color: #cbd5e1;
  font-size: 17px;
  line-height: 1.8;
}

.hero-btns {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: bold;
  transition: 0.2s;
}

.btn.primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: #fff;
}

.btn.primary:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.btn.ghost {
  border: 1px solid rgba(255,255,255,0.2);
  color: #e2e8f0;
  background: rgba(255,255,255,0.03);
}

.grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.card {
  grid-column: span 6;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 24px;
}

.card.wide {
  grid-column: span 12;
}

.card h2 {
  margin-top: 0;
  font-size: 24px;
  color: #ffffff;
}

.feature-list,
.step-list {
  line-height: 1.9;
  color: #dbeafe;
  padding-left: 20px;
}

.tag-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: 8px 12px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 999px;
  color: #bae6fd;
  font-size: 14px;
}

.form-card,
.result-card,
.history-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 24px;
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: #e2e8f0;
}

input[type="text"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #f8fafc;
  font-size: 15px;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.note {
  color: #cbd5e1;
  font-size: 13px;
  margin-top: 6px;
}

.result-box {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 18px;
  border-radius: 16px;
  margin-top: 12px;
  line-height: 1.8;
  white-space: pre-wrap;
}

.top-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.table-wrap {
  overflow-x: auto;
}

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

th, td {
  padding: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  text-align: left;
  vertical-align: top;
}

th {
  color: #93c5fd;
}

.small {
  font-size: 13px;
  color: #cbd5e1;
}

.alert {
  padding: 14px 16px;
  border-radius: 12px;
  margin-bottom: 16px;
}

.alert.ok {
  background: rgba(34,197,94,0.12);
  border: 1px solid rgba(34,197,94,0.3);
  color: #bbf7d0;
}

.alert.ng {
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.3);
  color: #fecaca;
}

@media (max-width: 900px) {
  .card,
  .card.wide {
    grid-column: span 12;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 30px;
  }
}