/* ==========================================================================
   联系我们页面（html/contact.html）
   仅在 style.css 之后加载，复用站点头部与尾部
   ========================================================================== */

:root {
  --ct-ink: #222222;
  --ct-body: #4d4d4d;
  --ct-muted: #949494;
  --ct-line: #e8e8e8;
  --ct-orange: #fbb03f;
  --ct-surface: #fafafa;
}

/* --------------------------------------------------------------------------
   页头
   -------------------------------------------------------------------------- */

.contact-head {
  padding-top: clamp(40px, 3.6vw, 66px);
  padding-bottom: clamp(34px, 3.2vw, 56px);
  background: linear-gradient(180deg, #f7f7f8 0%, #ffffff 100%);
  border-bottom: 1px solid #f1f1f1;
}

.contact-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(16px, 1.5vw, 24px);
  font-size: clamp(12px, 0.8vw, 14px);
  color: var(--ct-muted);
}

.contact-crumb a {
  color: var(--ct-muted);
  transition: color 0.2s var(--ease);
}

.contact-crumb a:hover {
  color: var(--ct-orange);
}

.contact-crumb [aria-current="page"] {
  color: #767676;
}

.contact-head__title {
  margin: 0;
  font-size: clamp(28px, 2.6vw, 44px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--ct-ink);
}

.contact-head__desc {
  max-width: 52em;
  margin: clamp(14px, 1.2vw, 20px) 0 0;
  font-size: clamp(14px, 0.95vw, 17px);
  line-height: 1.9;
  color: var(--ct-body);
}

/* --------------------------------------------------------------------------
   联系信息卡片
   -------------------------------------------------------------------------- */

.contact-info {
  padding-top: clamp(36px, 3.4vw, 60px);
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(14px, 1.4vw, 24px);
}

.contact-card {
  padding: clamp(22px, 2vw, 32px) clamp(18px, 1.7vw, 26px);
  border: 1px solid var(--ct-line);
  border-radius: 4px;
  background: #fff;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.contact-card:hover {
  border-color: #dedede;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.055);
  transform: translateY(-2px);
}

.contact-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: clamp(14px, 1.3vw, 20px);
  border-radius: 50%;
  color: var(--ct-orange);
  background: rgba(251, 176, 63, 0.1);
}

.contact-card__icon svg {
  width: 22px;
  height: 22px;
}

.contact-card__label {
  margin: 0 0 8px;
  font-size: clamp(13px, 0.85vw, 15px);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ct-muted);
}

.contact-card__value {
  display: block;
  font-size: clamp(16px, 1.15vw, 21px);
  font-weight: 500;
  line-height: 1.45;
  color: var(--ct-ink);
  word-break: break-word;
  transition: color 0.2s var(--ease);
}

a.contact-card__value:hover {
  color: var(--ct-orange);
}

.contact-card__value--text {
  font-size: clamp(14px, 1vw, 18px);
  font-weight: 400;
  color: #333;
}

.contact-card__note {
  margin: 10px 0 0;
  font-size: clamp(12px, 0.78vw, 13px);
  color: #b0b0b0;
}

/* --------------------------------------------------------------------------
   表单 + 地图
   -------------------------------------------------------------------------- */

.contact-body {
  padding-top: clamp(40px, 3.8vw, 68px);
  padding-bottom: clamp(56px, 5.4vw, 96px);
}

.contact-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: start;
  gap: clamp(28px, 3.2vw, 60px);
}

/* ------------------------------ 表单 ------------------------------ */

.contact-form__title {
  margin: 0;
  font-size: clamp(20px, 1.6vw, 27px);
  font-weight: 500;
  color: var(--ct-ink);
}

.contact-form__desc {
  margin: 10px 0 clamp(22px, 2vw, 32px);
  font-size: clamp(13px, 0.88vw, 15px);
  color: var(--ct-muted);
}

.contact-form__form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 1.5vw, 24px);
}

.contact-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.contact-field--full {
  grid-column: 1 / -1;
}

.contact-field__label {
  font-size: clamp(13px, 0.84vw, 14px);
  color: #5c5c5c;
}

.contact-field__label span {
  color: var(--ct-orange);
}

.contact-field__input {
  width: 100%;
  padding: 0 14px;
  height: 46px;
  border: 1px solid #e2e2e2;
  border-radius: 3px;
  background: #fff;
  font-family: inherit;
  font-size: clamp(13px, 0.88vw, 15px);
  color: #333;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.contact-field__input::placeholder {
  color: #bdbdbd;
}

.contact-field__input:hover {
  border-color: #d2d2d2;
}

.contact-field__input:focus {
  outline: none;
  border-color: var(--ct-orange);
  box-shadow: 0 0 0 3px rgba(251, 176, 63, 0.14);
}

/* 校验失败态 */
.contact-field__input.is-invalid {
  border-color: #e0574c;
  box-shadow: 0 0 0 3px rgba(224, 87, 76, 0.1);
}

.contact-field__select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 38px;
  background-image: linear-gradient(45deg, transparent 50%, #9a9a9a 50%),
    linear-gradient(135deg, #9a9a9a 50%, transparent 50%);
  background-position: calc(100% - 18px) 20px, calc(100% - 13px) 20px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}

.contact-field__textarea {
  height: auto;
  min-height: 132px;
  padding: 12px 14px;
  line-height: 1.75;
  resize: vertical;
}

.contact-form__actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 4px;
}

.contact-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 38px;
  border-radius: 3px;
  background: var(--ct-orange);
  font-size: clamp(14px, 0.92vw, 16px);
  color: #fff;
  transition: background-color 0.22s var(--ease);
}

.contact-submit:hover {
  background: #f5a423;
}

.contact-submit:active {
  background: #eb9a17;
}

.contact-form__hint {
  margin: 0;
  font-size: clamp(12px, 0.84vw, 14px);
  color: var(--ct-muted);
}

.contact-form__hint.is-error {
  color: #d8483c;
}

.contact-form__hint.is-success {
  color: #2f9e5f;
}

/* ------------------------------ 地图 ------------------------------ */

.contact-map__frame {
  overflow: hidden;
  border: 1px solid var(--ct-line);
  border-radius: 4px;
  background: var(--ct-surface);
}

.contact-map__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  aspect-ratio: 4 / 3;
  color: #b9bcc0;
  background:
    repeating-linear-gradient(0deg, #f3f4f5 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, #f3f4f5 0 1px, transparent 1px 40px),
    #fafafa;
}

.contact-map__placeholder svg {
  width: 42px;
  height: 42px;
}

.contact-map__text {
  font-size: clamp(12px, 0.8vw, 13px);
  color: #a9acb0;
}

.contact-map__meta {
  margin: clamp(18px, 1.6vw, 26px) 0 0;
}

.contact-map__meta > div {
  padding: 14px 0;
  border-top: 1px solid var(--ct-line);
}

.contact-map__meta > div:first-child {
  border-top: 0;
  padding-top: 0;
}

.contact-map__meta dt {
  margin-bottom: 6px;
  font-size: clamp(12px, 0.82vw, 13px);
  color: var(--ct-muted);
}

.contact-map__meta dd {
  margin: 0;
  font-size: clamp(13px, 0.9vw, 15px);
  line-height: 1.7;
  color: #3a3a3a;
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1100px) {
  .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-body__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-map__placeholder {
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 640px) {
  .contact-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form__form {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .contact-submit {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .contact-card,
  .contact-card__icon,
  .contact-field__input {
    transition-duration: 0.01ms !important;
  }
}