#child-celebration-calculator {
  --ccc-primary: #3f6f66;
  --ccc-primary-dark: #315950;
  --ccc-primary-soft: #e9f1ef;
  --ccc-bg: #fbfaf7;
  --ccc-card: #ffffff;
  --ccc-text: #26322f;
  --ccc-muted: #66736f;
  --ccc-border: #dbe4e1;
  --ccc-guide: #c99055;
  --ccc-shadow: 0 10px 28px rgba(53, 76, 70, 0.08);
  box-sizing: border-box;
  width: 100%;
  color: var(--ccc-text);
  background: var(--ccc-bg);
  border: 1px solid var(--ccc-border);
  border-radius: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
  overflow: hidden;
}

#child-celebration-calculator[data-theme="dark"] {
  --ccc-primary: #7fb4a9;
  --ccc-primary-dark: #a4cfc6;
  --ccc-primary-soft: #243c37;
  --ccc-bg: #17201e;
  --ccc-card: #202b28;
  --ccc-text: #edf3f1;
  --ccc-muted: #b8c6c2;
  --ccc-border: #3b4d48;
  --ccc-guide: #e3ae74;
  --ccc-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

#child-celebration-calculator *,
#child-celebration-calculator *::before,
#child-celebration-calculator *::after { box-sizing: border-box; }
#child-celebration-calculator .ccc-shell { padding: clamp(18px, 4vw, 38px); }
#child-celebration-calculator .ccc-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
#child-celebration-calculator .ccc-brand { margin: 0 0 2px; color: var(--ccc-primary); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; }
#child-celebration-calculator .ccc-title { font-size: clamp(1.35rem, 4vw, 2rem); font-weight: 700; line-height: 1.4; }
#child-celebration-calculator .ccc-lead { max-width: 650px; margin: 8px 0 0; color: var(--ccc-muted); font-size: 0.95rem; }
#child-celebration-calculator button,
#child-celebration-calculator input { font: inherit; }
#child-celebration-calculator button { cursor: pointer; }
#child-celebration-calculator button:focus-visible,
#child-celebration-calculator input:focus-visible,
#child-celebration-calculator summary:focus-visible { outline: 3px solid rgba(63, 111, 102, 0.28); outline-offset: 2px; }
#child-celebration-calculator .ccc-theme-button { flex: 0 0 auto; padding: 8px 12px; color: var(--ccc-primary-dark); background: var(--ccc-card); border: 1px solid var(--ccc-border); border-radius: 999px; font-size: 0.84rem; font-weight: 700; }
#child-celebration-calculator .ccc-notice { display: flex; align-items: flex-start; gap: 9px; margin-bottom: 20px; padding: 11px 14px; color: var(--ccc-primary-dark); background: var(--ccc-primary-soft); border-radius: 10px; font-size: 0.84rem; }
#child-celebration-calculator .ccc-card { color: var(--ccc-text); background: var(--ccc-card); border: 1px solid var(--ccc-border); border-radius: 16px; box-shadow: var(--ccc-shadow); }
#child-celebration-calculator .ccc-form-card { padding: clamp(18px, 4vw, 28px); }
#child-celebration-calculator .ccc-form-grid { display: grid; grid-template-columns: minmax(180px, 0.8fr) minmax(220px, 1fr) minmax(260px, 1.25fr); gap: 18px; align-items: start; }
#child-celebration-calculator .ccc-field { display: grid; gap: 6px; color: var(--ccc-muted); font-size: 0.85rem; font-weight: 700; }
#child-celebration-calculator .ccc-field input[type="date"] { width: 100%; min-height: 46px; padding: 9px 12px; color: var(--ccc-text); background: var(--ccc-card); border: 1px solid var(--ccc-border); border-radius: 9px; }
#child-celebration-calculator .ccc-fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
#child-celebration-calculator .ccc-fieldset legend { margin-bottom: 6px; color: var(--ccc-muted); font-size: 0.85rem; font-weight: 700; }
#child-celebration-calculator .ccc-fieldset p { margin: 6px 0 0; color: var(--ccc-muted); font-size: 0.75rem; line-height: 1.55; }
#child-celebration-calculator .ccc-choice-row { display: flex; gap: 8px; flex-wrap: wrap; }
#child-celebration-calculator .ccc-choice-row label { position: relative; cursor: pointer; }
#child-celebration-calculator .ccc-choice-row input { position: absolute; width: 1px; height: 1px; opacity: 0; }
#child-celebration-calculator .ccc-choice-row span { display: block; min-height: 42px; padding: 8px 13px; color: var(--ccc-muted); background: var(--ccc-card); border: 1px solid var(--ccc-border); border-radius: 9px; font-size: 0.84rem; font-weight: 700; }
#child-celebration-calculator .ccc-choice-row input:checked + span { color: var(--ccc-primary-dark); background: var(--ccc-primary-soft); border-color: var(--ccc-primary); }
#child-celebration-calculator .ccc-choice-row input:focus-visible + span { outline: 3px solid rgba(63, 111, 102, 0.28); outline-offset: 2px; }
#child-celebration-calculator .ccc-primary-button { display: block; min-height: 48px; margin: 22px auto 0; padding: 10px 26px; color: #fff; background: #3f6f66; border: 0; border-radius: 10px; font-weight: 700; box-shadow: 0 5px 14px rgba(63, 111, 102, 0.2); }
#child-celebration-calculator .ccc-message { margin: 16px 0 0; padding: 12px 14px; color: #8b3434; background: #fff1f1; border: 1px solid #eccccc; border-radius: 10px; }
#child-celebration-calculator[data-theme="dark"] .ccc-message { color: #ffd0d0; background: #402828; border-color: #714646; }

#child-celebration-calculator .ccc-results { margin-top: 24px; }
#child-celebration-calculator .ccc-results[hidden] { display: none; }
#child-celebration-calculator .ccc-results-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; margin-bottom: 15px; }
#child-celebration-calculator .ccc-section-title { font-size: 1.2rem; font-weight: 700; }
#child-celebration-calculator .ccc-results-header p { margin: 4px 0 0; color: var(--ccc-muted); font-size: 0.84rem; }
#child-celebration-calculator .ccc-legend { display: flex; gap: 13px; flex-wrap: wrap; color: var(--ccc-muted); font-size: 0.75rem; }
#child-celebration-calculator .ccc-legend span { display: inline-flex; align-items: center; gap: 5px; }
#child-celebration-calculator .ccc-dot { width: 9px; height: 9px; border-radius: 50%; }
#child-celebration-calculator .ccc-dot--calculated { background: var(--ccc-primary); }
#child-celebration-calculator .ccc-dot--guide { background: var(--ccc-guide); }
#child-celebration-calculator .ccc-timeline { position: relative; display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
#child-celebration-calculator .ccc-timeline::before { content: ""; position: absolute; top: 18px; bottom: 18px; left: 18px; width: 2px; background: var(--ccc-border); }
#child-celebration-calculator .ccc-event { position: relative; display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 13px; }
#child-celebration-calculator .ccc-event-marker { position: relative; z-index: 1; width: 14px; height: 14px; margin: 20px 0 0 12px; background: var(--ccc-primary); border: 3px solid var(--ccc-bg); border-radius: 50%; }
#child-celebration-calculator .ccc-event--guide .ccc-event-marker { background: var(--ccc-guide); }
#child-celebration-calculator .ccc-event-card { padding: 16px 18px; }
#child-celebration-calculator .ccc-event-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
#child-celebration-calculator .ccc-event-name { font-weight: 700; }
#child-celebration-calculator .ccc-event-type { flex: 0 0 auto; padding: 2px 8px; color: var(--ccc-primary-dark); background: var(--ccc-primary-soft); border-radius: 999px; font-size: 0.68rem; font-weight: 700; }
#child-celebration-calculator .ccc-event--guide .ccc-event-type { color: #795021; background: #fff3e4; }
#child-celebration-calculator[data-theme="dark"] .ccc-event--guide .ccc-event-type { color: #ffd4a2; background: #493824; }
#child-celebration-calculator .ccc-event-date { margin: 5px 0 2px; color: var(--ccc-primary-dark); font-size: 1.08rem; font-weight: 700; }
#child-celebration-calculator .ccc-event-note { margin: 0; color: var(--ccc-muted); font-size: 0.82rem; }
#child-celebration-calculator .ccc-event-caution { margin: 8px 0 0; padding: 7px 9px; color: var(--ccc-muted); background: var(--ccc-primary-soft); border-radius: 7px; font-size: 0.75rem; }

#child-celebration-calculator .ccc-guidance { margin-top: 24px; padding: clamp(18px, 4vw, 26px); }
#child-celebration-calculator .ccc-guidance ul { margin: 12px 0 0; padding-left: 1.25em; color: var(--ccc-muted); font-size: 0.84rem; }
#child-celebration-calculator .ccc-guidance li + li { margin-top: 6px; }
#child-celebration-calculator .ccc-method { margin-top: 16px; box-shadow: none; }
#child-celebration-calculator .ccc-method summary { padding: 15px 18px; color: var(--ccc-primary-dark); cursor: pointer; font-weight: 700; }
#child-celebration-calculator .ccc-method-body { padding: 0 18px 16px; }
#child-celebration-calculator .ccc-method-body dl { margin: 0; }
#child-celebration-calculator .ccc-method-body dl > div { display: grid; grid-template-columns: minmax(130px, 0.35fr) 1fr; gap: 12px; padding: 8px 0; border-top: 1px solid var(--ccc-border); }
#child-celebration-calculator .ccc-method-body dt { color: var(--ccc-primary-dark); font-weight: 700; }
#child-celebration-calculator .ccc-method-body dd { margin: 0; color: var(--ccc-muted); font-size: 0.84rem; }

@media (max-width: 800px) {
  #child-celebration-calculator .ccc-form-grid { grid-template-columns: 1fr 1fr; }
  #child-celebration-calculator .ccc-field:first-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  #child-celebration-calculator .ccc-shell { padding: 16px 12px; }
  #child-celebration-calculator .ccc-header { gap: 10px; }
  #child-celebration-calculator .ccc-theme-button { padding: 7px 9px; font-size: 0.75rem; }
  #child-celebration-calculator .ccc-form-grid { grid-template-columns: 1fr; }
  #child-celebration-calculator .ccc-field:first-child { grid-column: auto; }
  #child-celebration-calculator .ccc-choice-row label { flex: 1 1 110px; }
  #child-celebration-calculator .ccc-choice-row span { text-align: center; }
  #child-celebration-calculator .ccc-primary-button { width: 100%; }
  #child-celebration-calculator .ccc-results-header { align-items: flex-start; flex-direction: column; }
  #child-celebration-calculator .ccc-timeline::before { left: 9px; }
  #child-celebration-calculator .ccc-event { grid-template-columns: 20px minmax(0, 1fr); gap: 7px; }
  #child-celebration-calculator .ccc-event-marker { margin-left: 3px; }
  #child-celebration-calculator .ccc-event-card { padding: 14px; }
  #child-celebration-calculator .ccc-event-top { align-items: flex-start; flex-direction: column; gap: 5px; }
  #child-celebration-calculator .ccc-method-body dl > div { grid-template-columns: 1fr; gap: 1px; }
}