:root {
  --pink: #f091b1;
  --pink-dark: #e06a94;
  --yellow: #feeb1a;
  --black: #1a1a1a;
  --gray: #5a5a5a;
  --gray-light: #f7f5f6;
  --white: #ffffff;
  --error-bg: #fff0f3;
  --error-border: #f091b1;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--black);
  background: linear-gradient(160deg, #fff9fb 0%, #fffef5 50%, #ffffff 100%);
  line-height: 1.75;
  min-height: 100vh;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.header { margin-bottom: 32px; }

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  background: var(--yellow);
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 700;
}

.header h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 900;
  margin-bottom: 12px;
}

.lead {
  color: var(--gray);
  font-size: 0.9375rem;
}

.alert {
  padding: 14px 18px;
  border-radius: 10px;
  margin-bottom: 24px;
  font-size: 0.875rem;
  font-weight: 700;
}

.alert-error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: #a0345a;
}

.form {
  background: var(--white);
  border: 1px solid #ececec;
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 32px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.field { margin-bottom: 24px; }

.field label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.required {
  font-size: 0.75rem;
  color: var(--pink-dark);
  margin-left: 6px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-family: inherit;
  line-height: 1.6;
}

.field textarea {
  resize: vertical;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.8125rem;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--pink);
  box-shadow: 0 0 0 3px rgba(240, 145, 177, 0.2);
}

.hint {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--gray);
}

.hint code {
  background: var(--gray-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border: none;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  width: 100%;
  background: var(--pink);
  color: var(--white);
  box-shadow: 0 6px 20px rgba(240, 145, 177, 0.35);
}

.btn-primary:hover { background: var(--pink-dark); }

.btn-secondary {
  background: var(--white);
  color: var(--black);
  border: 2px solid var(--black);
}

.steps {
  padding: 24px;
  background: var(--gray-light);
  border-radius: 14px;
}

.steps h2 {
  font-size: 1rem;
  margin-bottom: 12px;
}

.steps ol {
  margin-left: 1.25em;
  font-size: 0.875rem;
  color: var(--gray);
}

.steps li { margin-bottom: 6px; }

.success-box {
  background: var(--white);
  border: 2px solid var(--pink);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 24px;
  text-align: center;
}

.success-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--pink-dark);
  margin-bottom: 12px;
}

.success-url {
  font-size: 1rem;
  font-weight: 700;
  word-break: break-all;
  margin-bottom: 20px;
}

.success-url a {
  color: var(--pink-dark);
}

.note-box {
  padding: 20px 24px;
  background: var(--gray-light);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--gray);
  margin-bottom: 24px;
}

.note-box strong {
  display: block;
  color: var(--black);
  margin-bottom: 8px;
}

.note-box ul {
  margin-left: 1.25em;
}

.back-link {
  text-align: center;
  font-size: 0.875rem;
}

.back-link a {
  color: var(--gray);
  font-weight: 700;
}