:root {
  --contact-bg: #f6f8fb;
  --contact-surface: #ffffff;
  --contact-text: #20242a;
  --contact-muted: #65717d;
  --contact-line: #d9e0e8;
  --contact-accent: #2f6f7f;
  --contact-accent-strong: #225866;
  --contact-success: #1f7a55;
  --contact-error: #b3261e;
}

* {
  box-sizing: border-box;
}

body.contact-page {
  margin: 0;
  min-height: 100vh;
  background: var(--contact-bg);
  color: var(--contact-text);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

.contact-site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px max(20px, calc((100vw - 980px) / 2));
  border-bottom: 1px solid rgba(217, 224, 232, 0.9);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}

.contact-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--contact-text);
  font-size: 1.05rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.contact-brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.contact-language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--contact-muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.contact-language-switcher a {
  color: var(--contact-accent-strong);
  text-decoration: none;
}

.contact-language-switcher .is-active {
  color: var(--contact-text);
}

.contact-main {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 44px 20px 60px;
}

.contact-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.contact-kicker {
  margin: 0 0 8px;
  color: var(--contact-accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-heading h1 {
  margin: 0;
  font-size: 2.2rem;
  line-height: 1.2;
}

.contact-heading p:last-child {
  margin: 14px 0 0;
  color: var(--contact-muted);
  font-size: 1rem;
  line-height: 1.85;
}

.contact-form-panel {
  padding: 28px;
  border: 1px solid var(--contact-line);
  border-radius: 8px;
  background: var(--contact-surface);
  box-shadow: 0 18px 44px rgba(35, 48, 66, 0.08);
}

.contact-form-panel h2 {
  margin: 0;
  font-size: 1.24rem;
  line-height: 1.45;
}

.contact-login-note {
  margin: 10px 0 18px;
  color: var(--contact-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.contact-alert {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  line-height: 1.7;
}

.contact-alert p {
  margin: 0;
}

.contact-alert p + p {
  margin-top: 4px;
}

.contact-alert-error {
  border: 1px solid rgba(179, 38, 30, 0.22);
  background: rgba(179, 38, 30, 0.08);
  color: var(--contact-error);
}

.contact-alert-success {
  border: 1px solid rgba(31, 122, 85, 0.22);
  background: rgba(31, 122, 85, 0.09);
  color: var(--contact-success);
}

.contact-fields {
  margin: 0;
  padding: 0;
  border: 0;
}

.contact-form-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid var(--contact-line);
}

.contact-label {
  padding-top: 10px;
  color: #34404b;
  font-size: 0.92rem;
  font-weight: 900;
  line-height: 1.4;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cfd8e3;
  border-radius: 8px;
  background: #fff;
  color: var(--contact-text);
  font: inherit;
}

.contact-form input,
.contact-form select {
  min-height: 44px;
  padding: 9px 12px;
}

.contact-form textarea {
  min-height: 210px;
  padding: 12px;
  resize: vertical;
  line-height: 1.75;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(47, 111, 127, 0.18);
  border-color: var(--contact-accent);
}

.contact-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--contact-line);
}

.contact-secondary-link {
  color: var(--contact-accent-strong);
  font-size: 0.92rem;
  font-weight: 900;
  text-decoration: none;
}

.contact-submit {
  min-width: 132px;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  background: var(--contact-accent-strong);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 0.94rem;
  font-weight: 900;
}

.contact-submit:disabled {
  cursor: wait;
  opacity: 0.62;
}

.contact-complete-modal[hidden] {
  display: none;
}

.contact-modal-open {
  overflow: hidden;
}

.contact-complete-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(20, 28, 36, 0.52);
}

.contact-complete-panel {
  width: min(100%, 420px);
  padding: 28px;
  border-radius: 8px;
  background: #fff;
  text-align: center;
  box-shadow: 0 18px 42px rgba(8, 20, 30, 0.26);
}

.contact-complete-message {
  margin: 0 0 18px;
  color: var(--contact-text);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.75;
}

.contact-complete-return {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 8px;
  background: var(--contact-accent-strong);
  color: #fff;
  font-size: 0.96rem;
  font-weight: 900;
  text-decoration: none;
}

.contact-complete-return:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.86);
  outline-offset: 3px;
}

@media (max-width: 720px) {
  .contact-site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .contact-main {
    padding: 32px 16px 48px;
  }

  .contact-heading h1 {
    font-size: 1.8rem;
  }

  .contact-form-panel {
    padding: 20px;
  }

  .contact-form-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0;
  }

  .contact-label {
    padding-top: 0;
  }

  .contact-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .contact-submit,
  .contact-secondary-link {
    width: 100%;
    text-align: center;
  }

  .contact-complete-return {
    width: min(100%, 280px);
  }
}