/* =============================================
   page-contact – 联系我们页面专属样式
   作用域限定 .page-contact
   移动端优先 + 桌面断点 768px / 1024px
   ============================================= */

.page-contact {
  --color-primary: #FF4500;
  --color-secondary: #1E90FF;
  --color-accent: #FFD700;
  --color-bg: #0A0A0A;
  --color-bg-alt: #111111;
  --color-text: #FFFFFF;
  --color-text-secondary: #B0B0B0;
  --color-border: #333333;
  --color-success: #00FF7F;
  --font-display: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
  --font-mono: 'Consolas', 'Source Code Pro', 'Courier New', monospace;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1280px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  display: block;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  padding: 0 16px 48px;
}

/* ---- 容器 ---- */
.page-contact .container {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

/* ---- 可访问隐藏 ---- */
.page-contact .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- 面包屑 ---- */
.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

.page-contact .breadcrumb__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
  position: relative;
}

.page-contact .breadcrumb__link::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.page-contact .breadcrumb__link:hover,
.page-contact .breadcrumb__link:focus-visible {
  color: var(--color-primary);
}

.page-contact .breadcrumb__link:hover::after,
.page-contact .breadcrumb__link:focus-visible::after {
  width: 100%;
}

.page-contact .breadcrumb__separator {
  color: var(--color-border);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-contact .breadcrumb__current {
  color: var(--color-text);
  font-weight: 600;
}

/* ---- 页面标题 ---- */
.page-contact__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  word-break: break-word;
}

.page-contact__title-accent {
  color: var(--color-primary);
  display: inline-block;
  position: relative;
}

.page-contact__title-accent::after {
  content: '';
  display: block;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  margin-top: 2px;
  border-radius: 2px;
}

.page-contact__subtitle {
  color: var(--color-text-secondary);
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  margin: 8px 0 32px;
  padding-left: 2px;
  border-left: 3px solid var(--color-primary);
  padding-left: 12px;
}

/* ---- 联系方式卡片区 ---- */
.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

/* ---- 单个卡片 ---- */
.page-contact .contact-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.page-contact .contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page-contact .contact-card:hover::before,
.page-contact .contact-card:focus-within::before {
  transform: scaleY(1);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 24px rgba(255, 69, 0, 0.12);
}

/* 卡片斜线装饰 */
.page-contact .contact-card::after {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 69, 0, 0.06) 50%);
  pointer-events: none;
}

.page-contact .contact-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 69, 0, 0.08);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.page-contact .contact-card:hover .contact-card__icon,
.page-contact .contact-card:focus-within .contact-card__icon {
  background: rgba(255, 69, 0, 0.16);
}

.page-contact .contact-card__body {
  flex: 1;
  min-width: 0;
}

.page-contact .contact-card__label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin: 0 0 6px;
}

.page-contact .contact-card__value {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 0 0 4px;
  word-break: break-word;
}

.page-contact .contact-card__value--link {
  text-decoration: none;
  transition: color var(--transition);
}

.page-contact .contact-card__value--link:hover,
.page-contact .contact-card__value--link:focus-visible {
  color: var(--color-primary);
  outline: none;
}

.page-contact .contact-card__value--phone {
  font-size: 1.2rem;
}

.page-contact .contact-card__value--phone .data-number {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  background: rgba(255, 69, 0, 0.06);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.page-contact .contact-card__note {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  margin: 4px 0 0;
  line-height: 1.4;
}

/* ---- 服务说明 ---- */
.page-contact .service-info {
  margin-bottom: 48px;
  position: relative;
}

.page-contact .panel--angled {
  background: var(--color-bg-alt);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  padding: 28px 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.page-contact .panel--angled:hover {
  border-color: rgba(255, 69, 0, 0.25);
  box-shadow: 0 0 32px rgba(255, 69, 0, 0.05);
}

.page-contact .panel__inner {
  position: relative;
  z-index: 1;
}

.page-contact .service-info__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 16px;
  color: var(--color-text);
  display: inline-block;
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: 4px;
}

.page-contact .service-info__content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .service-info__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.7;
}

.page-contact .service-info__highlight {
  color: var(--color-text);
  font-weight: 600;
  background: linear-gradient(90deg, rgba(255, 69, 0, 0.12), transparent);
  padding: 0 6px;
}

.page-contact .service-info__link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition), box-shadow var(--transition);
  position: relative;
}

.page-contact .service-info__link::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  background: var(--color-secondary);
  transition: width var(--transition);
}

.page-contact .service-info__link:hover,
.page-contact .service-info__link:focus-visible {
  color: var(--color-primary);
  outline: none;
}

.page-contact .service-info__link:hover::after,
.page-contact .service-info__link:focus-visible::after {
  width: 100%;
}

.page-contact .service-info__note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 8px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.page-contact .service-info .data-number {
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-weight: 600;
}

/* 速度线装饰 */
.page-contact .service-info__speedline {
  position: absolute;
  bottom: 8px;
  right: 12px;
  width: 120px;
  height: 20px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 4px,
    rgba(255, 69, 0, 0.08) 4px,
    rgba(255, 69, 0, 0.08) 8px
  );
  pointer-events: none;
  opacity: 0.4;
}

/* ---- 留言表单区 ---- */
.page-contact .contact-form-section {
  position: relative;
  margin-bottom: 48px;
  padding: 32px 0 40px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-contact .contact-form-section__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 6px;
  color: var(--color-text);
}

.page-contact .contact-form-section__desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin: 0 0 24px;
}

/* 表单容器 */
.page-contact .contact-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.page-contact .contact-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.page-contact .contact-form__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.page-contact .contact-form__input,
.page-contact .contact-form__textarea {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  box-sizing: border-box;
}

.page-contact .contact-form__input::placeholder,
.page-contact .contact-form__textarea::placeholder {
  color: rgba(176, 176, 176, 0.5);
}

.page-contact .contact-form__input:focus,
.page-contact .contact-form__textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.15), 0 0 20px rgba(30, 144, 255, 0.06);
}

.page-contact .contact-form__textarea {
  resize: vertical;
  min-height: 100px;
}

/* 提交按钮 */
.page-contact .contact-form__action {
  grid-column: 1 / -1;
  padding-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.page-contact .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: default;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-contact .btn--primary {
  background: linear-gradient(135deg, var(--color-primary), #cc3700);
  color: var(--color-text);
  box-shadow: 0 4px 20px rgba(255, 69, 0, 0.25);
}

.page-contact .btn--primary:hover,
.page-contact .btn--primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 69, 0, 0.35);
}

.page-contact .btn--primary:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 3px;
}

.page-contact .btn__text {
  position: relative;
  z-index: 1;
}

.page-contact .btn__glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.08) 50%, transparent 60%);
  background-size: 200% 200%;
  transition: background-position var(--transition);
  pointer-events: none;
}

.page-contact .btn--primary:hover .btn__glow,
.page-contact .btn--primary:focus-visible .btn__glow {
  background-position: 100% 100%;
}

.page-contact .contact-form__hint {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin: 0;
  font-style: italic;
  opacity: 0.6;
}

/* 表单装饰图 */
.page-contact .contact-form__decor {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 180px;
  height: 140px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-form__decor-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ---- 底部装饰 ---- */
.page-contact .contact-bottom {
  position: relative;
  margin-top: 8px;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100px;
}

.page-contact .contact-bottom__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.08;
}

.page-contact .contact-bottom__speedline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 6px,
    rgba(255, 69, 0, 0.03) 6px,
    rgba(255, 69, 0, 0.03) 10px
  );
  pointer-events: none;
}

/* =============================================
   响应式 – 平板 768px 起
   ============================================= */
@media (min-width: 768px) {
  .page-contact {
    padding: 0 32px 64px;
  }

  .page-contact .breadcrumb {
    padding: 32px 0 24px;
    font-size: 14px;
  }

  .page-contact__subtitle {
    margin: 12px 0 40px;
  }

  /* 联系方式卡片三列网格 */
  .page-contact .contact-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 56px;
  }

  .page-contact .contact-card {
    padding: 24px 24px 28px;
    flex-direction: column;
    gap: 14px;
  }

  .page-contact .contact-card__icon {
    width: 52px;
    height: 52px;
  }

  .page-contact .contact-card__value {
    font-size: 1.1rem;
  }

  .page-contact .contact-card__value--phone .data-number {
    font-size: 1.4rem;
  }

  /* 服务说明 */
  .page-contact .panel--angled {
    padding: 36px 32px;
  }

  .page-contact .service-info__title {
    font-size: 1.4rem;
  }

  .page-contact .service-info__text {
    font-size: 1rem;
  }

  /* 表单区域 */
  .page-contact .contact-form-section {
    padding: 40px 0 48px;
  }

  .page-contact .contact-form-section__title {
    font-size: 1.7rem;
  }

  .page-contact .contact-form {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-contact .contact-form__decor {
    width: 240px;
    height: 180px;
  }

  .page-contact .contact-bottom {
    height: 140px;
  }
}

/* =============================================
   响应式 – 桌面 1024px 起
   ============================================= */
@media (min-width: 1024px) {
  .page-contact {
    padding: 0 48px 80px;
  }

  .page-contact .breadcrumb {
    padding: 40px 0 28px;
  }

  .page-contact .contact-cards {
    gap: 24px;
    margin-bottom: 64px;
  }

  .page-contact .contact-card {
    padding: 28px 28px 32px;
  }

  .page-contact .contact-card__icon {
    width: 56px;
    height: 56px;
  }

  .page-contact .panel--angled {
    padding: 44px 40px;
  }

  .page-contact .contact-form-section {
    padding: 48px 0 56px;
  }

  .page-contact .contact-form {
    max-width: 720px;
    gap: 24px;
  }

  .page-contact .btn {
    padding: 14px 40px;
    font-size: 1.05rem;
  }

  .page-contact .contact-form__decor {
    width: 300px;
    height: 220px;
  }

  .page-contact .contact-bottom {
    height: 180px;
    margin-top: 16px;
  }
}

/* =============================================
   桌面宽屏 1280px+ 内容居中微调
   ============================================= */
@media (min-width: 1280px) {
  .page-contact .contact-form__decor {
    right: calc((100vw - var(--max-width)) / -4);
    opacity: 0.12;
  }
}