/* ===== 页面专属样式：contact（在线支援） ===== */
.page-contact {
  --contact-bg-start: #0D0D0D;
  --contact-bg-end: #1A1A2E;
  --contact-card-bg: #1C1C3A;
  --contact-glow: 0 0 12px rgba(255, 69, 0, 0.25);
  --contact-input-bg: rgba(12, 12, 30, 0.7);
  --contact-radius: 12px;
  --contact-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  position: relative;
  background: linear-gradient(145deg, var(--contact-bg-start), var(--contact-bg-end));
  min-height: 100vh;
  padding: 2rem 0 4rem;
  overflow: hidden;
}

/* ------ 背景粒子（缓慢运动） ------ */
.page-contact::before,
.page-contact::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

.page-contact::before {
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 69, 0, 0.08) 0%, transparent 70%);
  top: -80px;
  right: -60px;
  animation: contact-particle-drift 22s ease-in-out infinite alternate;
}

.page-contact::after {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.05) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
  animation: contact-particle-drift 28s ease-in-out infinite alternate-reverse;
}

@keyframes contact-particle-drift {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(30px, -20px) scale(1.08); }
  66%  { transform: translate(-20px, 25px) scale(0.92); }
  100% { transform: translate(15px, -10px) scale(1.04); }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact::before,
  .page-contact::after {
    animation: none;
    opacity: 0.15;
  }
}

/* ------ 容器与栅格 ------ */
.page-contact .container {
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 1;
}

.page-contact .contact-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

/* ------ 面包屑 ------ */
.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0C0);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

.page-contact .breadcrumb__link {
  color: var(--color-text-secondary, #B0B0C0);
  text-decoration: none;
  transition: color var(--contact-transition);
  position: relative;
}

.page-contact .breadcrumb__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--color-primary, #FF4500);
  transition: width var(--contact-transition);
}

.page-contact .breadcrumb__link:hover,
.page-contact .breadcrumb__link:focus-visible {
  color: var(--color-primary, #FF4500);
  outline: none;
}

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

.page-contact .breadcrumb__sep {
  color: var(--color-border, rgba(255, 69, 0, 0.4));
  font-weight: 300;
}

.page-contact .breadcrumb__current {
  color: var(--color-text, #FFFFFF);
  font-weight: 500;
}

/* ------ 标题区 ------ */
.page-contact .contact-hero {
  text-align: center;
}

.page-contact .contact-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  font-weight: 700;
  color: var(--color-text, #FFFFFF);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
  line-height: 1.1;
}

.page-contact .contact-hero__title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary, #FF4500), var(--color-accent, #FFD700));
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

.page-contact .contact-hero__desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-secondary, #B0B0C0);
  max-width: 640px;
  margin: 1rem auto 0;
  line-height: 1.7;
}

/* ------ section-title 统一修饰 ------ */
.page-contact .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--color-text, #FFFFFF);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 1.25rem;
  line-height: 1.15;
  position: relative;
  display: inline-block;
}

.page-contact .section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 48px;
  height: 3px;
  background: var(--color-primary, #FF4500);
  border-radius: 2px;
}

/* ------ 联系渠道卡片 ------ */
.page-contact .channels-card {
  background: var(--contact-card-bg);
  border: 1px solid var(--color-border, rgba(255, 69, 0, 0.4));
  border-radius: var(--contact-radius);
  padding: 1.75rem 1.5rem 1.5rem;
  box-shadow: var(--contact-glow);
  transition: border-color var(--contact-transition), box-shadow var(--contact-transition);
  position: relative;
  overflow: hidden;
}

.page-contact .channels-card:hover {
  border-color: rgba(255, 69, 0, 0.7);
  box-shadow: 0 0 20px rgba(255, 69, 0, 0.15);
}

.page-contact .channels-title {
  margin-bottom: 1.5rem;
}

.page-contact .channels-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-contact .channels-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  transition: background var(--contact-transition), transform var(--contact-transition);
}

.page-contact .channels-item:hover {
  background: rgba(255, 69, 0, 0.06);
  transform: translateX(4px);
}

.page-contact .channels-icon {
  font-size: 1.3rem;
  line-height: 1.4;
  color: var(--color-primary, #FF4500);
  flex-shrink: 0;
  width: 1.8rem;
  text-align: center;
}

.page-contact .channels-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.page-contact .channels-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary, #B0B0C0);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-contact .channels-value {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text, #FFFFFF);
  word-break: break-word;
}

.page-contact .channels-note {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0C0);
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.85rem;
  margin-bottom: 1.25rem;
}

.page-contact .channels-visual {
  margin: 0 -0.5rem -0.5rem;
  text-align: center;
}

.page-contact .channels-img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
  object-fit: contain;
  aspect-ratio: 1/1;
  opacity: 0.85;
  transition: opacity var(--contact-transition);
}

.page-contact .channels-card:hover .channels-img {
  opacity: 1;
}

/* ------ 反馈表单卡片 ------ */
.page-contact .form-card {
  background: var(--contact-card-bg);
  border: 1px solid var(--color-border, rgba(255, 69, 0, 0.4));
  border-radius: var(--contact-radius);
  padding: 1.75rem 1.5rem 1.5rem;
  box-shadow: var(--contact-glow);
  transition: border-color var(--contact-transition), box-shadow var(--contact-transition);
}

.page-contact .form-card:hover {
  border-color: rgba(255, 69, 0, 0.7);
  box-shadow: 0 0 20px rgba(255, 69, 0, 0.15);
}

.page-contact .form-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-contact .form-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 6px;
  object-fit: contain;
  opacity: 0.9;
}

.page-contact .form-title {
  margin: 0;
}

.page-contact .form-title::after {
  left: 0;
  bottom: -4px;
}

.page-contact .form-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-contact .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-contact .form-label {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary, #B0B0C0);
  letter-spacing: 0.04em;
  transition: color var(--contact-transition), transform var(--contact-transition);
  transform-origin: left center;
}

.page-contact .form-field {
  position: relative;
}

.page-contact .form-select,
.page-contact .form-textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text, #FFFFFF);
  background: var(--contact-input-bg);
  border: none;
  border-bottom: 2px solid rgba(255, 255, 255, 0.12);
  padding: 0.75rem 0.5rem 0.6rem;
  outline: none;
  transition: border-color var(--contact-transition), background var(--contact-transition);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
}

.page-contact .form-select {
  cursor: pointer;
  padding-right: 2rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23B0B0C0' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 12px 8px;
}

.page-contact .form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.page-contact .form-select:focus,
.page-contact .form-textarea:focus {
  border-bottom-color: var(--color-primary, #FF4500);
  background: rgba(12, 12, 30, 0.9);
}

/* 霓虹底线（装饰线） */
.page-contact .form-line {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary, #FF4500);
  transition: width var(--contact-transition);
  pointer-events: none;
  box-shadow: 0 0 8px rgba(255, 69, 0, 0.3);
}

.page-contact .form-select:focus ~ .form-line,
.page-contact .form-textarea:focus ~ .form-line {
  width: 100%;
}

/* 文本域占位提示（模拟浮动标签效果） */
.page-contact .form-placeholder {
  position: absolute;
  left: 0.5rem;
  top: 0.85rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text-secondary, #B0B0C0);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--contact-transition);
}

.page-contact .form-textarea:placeholder-shown ~ .form-placeholder {
  opacity: 0;
}

.page-contact .form-textarea:not(:placeholder-shown) ~ .form-placeholder,
.page-contact .form-textarea:focus ~ .form-placeholder {
  opacity: 0;
}

/* 标签上浮：聚焦或有内容时 */
.page-contact .form-group:focus-within .form-label {
  color: var(--color-primary, #FF4500);
  transform: translateY(-2px);
}

.page-contact .form-textarea:not(:placeholder-shown) ~ .form-label,
.page-contact .form-textarea:not(:placeholder-shown) + .form-label {
  color: var(--color-primary, #FF4500);
}

/* 提交按钮组 */
.page-contact .form-group--submit {
  margin-top: 0.5rem;
}

.page-contact .form-submit {
  align-self: flex-start;
  padding: 0.85rem 2.8rem;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #FFFFFF;
  background: var(--color-primary, #FF4500);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--contact-transition), box-shadow var(--contact-transition), transform 0.15s;
  box-shadow: 0 0 12px rgba(255, 69, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.page-contact .form-submit:hover {
  background: #e63e00;
  box-shadow: 0 0 24px rgba(255, 69, 0, 0.5);
  transform: translateY(-1px);
}

.page-contact .form-submit:active {
  transform: scale(0.97);
  box-shadow: 0 0 32px rgba(255, 69, 0, 0.7);
  transition-duration: 0.08s;
}

/* 按钮脉冲光效（点击扩散） */
.page-contact .form-submit::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.page-contact .form-submit:active::after {
  opacity: 1;
  animation: contact-glow-burst 0.5s ease-out forwards;
}

@keyframes contact-glow-burst {
  0%   { opacity: 0.6; transform: scale(0.8); }
  50%  { opacity: 0.3; transform: scale(1.4); }
  100% { opacity: 0;   transform: scale(2);   }
}

.page-contact .form-footnote {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0C0);
  margin-top: 1.25rem;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.85rem;
}

/* ------ 在线时间区块 ------ */
.page-contact .contact-hours {
  margin-top: 2.5rem;
}

.page-contact .hours-card {
  background: var(--contact-card-bg);
  border: 1px solid var(--color-border, rgba(255, 69, 0, 0.4));
  border-radius: var(--contact-radius);
  padding: 1.75rem 1.5rem 2rem;
  box-shadow: var(--contact-glow);
  text-align: center;
  transition: border-color var(--contact-transition), box-shadow var(--contact-transition);
}

.page-contact .hours-card:hover {
  border-color: rgba(255, 69, 0, 0.7);
  box-shadow: 0 0 20px rgba(255, 69, 0, 0.15);
}

.page-contact .hours-title {
  display: inline-block;
  margin-bottom: 1.25rem;
}

.page-contact .hours-title::after {
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
}

.page-contact .hours-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.page-contact .hours-label {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary, #B0B0C0);
  letter-spacing: 0.04em;
}

.page-contact .hours-value {
  font-family: var(--font-data);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--color-accent, #FFD700);
  letter-spacing: 0.04em;
  text-shadow: 0 0 12px rgba(255, 215, 0, 0.2);
}

.page-contact .hours-note {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-secondary, #B0B0C0);
  line-height: 1.6;
  margin: 0.5rem 0 1.25rem;
}

/* 进度条装饰 */
.page-contact .hours-progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
  max-width: 320px;
  margin: 0 auto;
}

.page-contact .hours-progress-bar {
  display: block;
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--color-primary, #FF4500), var(--color-accent, #FFD700));
  transition: width 0.6s ease;
  box-shadow: 0 0 10px rgba(255, 69, 0, 0.3);
}

/* ===== 桌面端（≥768px） ===== */
@media (min-width: 768px) {
  .page-contact {
    padding: 3rem 0 5rem;
  }

  .page-contact .container {
    padding: 0 2rem;
  }

  .page-contact .contact-main {
    grid-template-columns: 1fr 1.1fr;
    gap: 2.5rem;
    margin-top: 3rem;
    align-items: start;
  }

  .page-contact .contact-hero__title {
    font-size: clamp(3rem, 6vw, 4.8rem);
  }

  .page-contact .contact-hero__desc {
    font-size: 1.05rem;
  }

  .page-contact .channels-card {
    padding: 2rem 1.75rem 1.75rem;
  }

  .page-contact .form-card {
    padding: 2rem 1.75rem 1.75rem;
  }

  .page-contact .channels-img {
    max-height: 280px;
    width: auto;
  }

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

  .page-contact .form-submit {
    padding: 0.9rem 3.2rem;
    font-size: 1.15rem;
  }

  .page-contact .hours-card {
    padding: 2rem 2rem 2.25rem;
  }

  .page-contact .hours-value {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
  }
}

/* ===== 大桌面（≥1024px） ===== */
@media (min-width: 1024px) {
  .page-contact .container {
    padding: 0 2.5rem;
  }

  .page-contact .contact-main {
    gap: 3rem;
  }

  .page-contact .channels-card {
    padding: 2.25rem 2rem 2rem;
  }

  .page-contact .form-card {
    padding: 2.25rem 2rem 2rem;
  }

  .page-contact .channels-img {
    max-height: 320px;
  }
}

/* ===== reduced-motion 兼容 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.05s !important;
  }

  .page-contact .form-submit:active::after {
    animation: none;
    opacity: 0;
  }

  .page-contact .channels-item:hover {
    transform: none;
  }

  .page-contact .form-submit:hover {
    transform: none;
  }
}