/* ===== 联系入口页专属样式 ===== */
.page-contact {
  --contact-panel: #141B2D;
  --contact-panel-soft: #1A2333;
  --contact-grid: rgba(0, 229, 255, 0.05);
  --contact-line: rgba(176, 190, 205, 0.14);
  --contact-blue: rgba(0, 229, 255, 0.35);
  --contact-clip: 14px;
  position: relative;
  background-color: var(--bg-primary, #0A0E17);
  overflow-x: hidden;
}

/* ===== Hero 区域 ===== */
.contact-hero {
  position: relative;
  padding: 2rem 0 3rem;
}

.contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--contact-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--contact-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.contact-hero .container {
  position: relative;
  z-index: 1;
}

.contact-hero-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-hero-copy {
  position: relative;
}

.contact-hero-copy .section-index {
  color: var(--accent-blue, #00E5FF);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.contact-hero-copy h1 {
  font-size: clamp(1.75rem, 2.4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.25;
  margin: 0 0 1rem;
  color: var(--text-main, #E0E6ED);
  position: relative;
  display: inline-block;
}

.contact-hero-copy h1::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  margin-top: 0.75rem;
  background: var(--accent-orange, #FF6A00);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.contact-hero-desc {
  color: var(--text-dim, #8899AA);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 56rem;
  margin: 1rem 0 1.25rem;
}

.contact-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.contact-hero-figure {
  margin: 0;
  border: 1px solid var(--contact-blue, rgba(0, 229, 255, 0.35));
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  background: var(--contact-panel, #141B2D);
  display: flex;
  flex-direction: column;
}

.contact-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.contact-hero-figure .img-label {
  padding: 0.5rem 1rem;
  font-family: var(--font-mono, monospace);
  font-size: 0.7rem;
  color: var(--text-dim, #8899AA);
  border-top: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  letter-spacing: 0.15em;
}

/* ===== 联系方式 ===== */
.contact-channels {
  padding: 3.5rem 0 1.5rem;
  position: relative;
}

.contact-section-head {
  margin-bottom: 2rem;
}

.contact-section-head .section-index {
  color: var(--accent-blue, #00E5FF);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}

.contact-section-head h2 {
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 900;
  margin: 0 0 0.5rem;
  color: var(--text-main, #E0E6ED);
}

.contact-section-desc {
  color: var(--text-dim, #8899AA);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

.channel-grid {
  display: grid;
  gap: 1.25rem;
}

.channel-card {
  position: relative;
  display: block;
  background: var(--contact-panel, #141B2D);
  border: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  padding: 1.75rem 1.5rem;
  clip-path: polygon(0 0, calc(100% - var(--contact-clip, 14px)) 0, 100% var(--contact-clip, 14px), 100% 100%, var(--contact-clip, 14px) 100%, 0 calc(100% - var(--contact-clip, 14px)));
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--contact-blue, rgba(0, 229, 255, 0.35));
  box-shadow: 0 8px 24px rgba(0, 229, 255, 0.08);
}

.channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 0;
  background: var(--accent-orange, #FF6A00);
  transition: height 0.25s ease;
}

.channel-card:hover::before {
  height: 100%;
}

.channel-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  border: 1px solid var(--contact-blue, rgba(0, 229, 255, 0.35));
  color: var(--accent-blue, #00E5FF);
  background: rgba(0, 229, 255, 0.08);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.channel-icon svg {
  width: 22px;
  height: 22px;
}

.channel-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim, #8899AA);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.channel-value {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main, #E0E6ED);
  word-break: break-all;
  line-height: 1.4;
}

.channel-note {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim, #8899AA);
  margin-top: 0.5rem;
  line-height: 1.5;
}

.channel-action {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 700;
  color: var(--accent-orange, #FF6A00);
  font-size: 0.9rem;
  transition: transform 0.2s ease;
}

.channel-mail:hover .channel-action {
  transform: translateX(4px);
}

/* 电话卡片脉冲动画 */
.channel-call {
  position: absolute;
  right: 1.5rem;
  bottom: 0.75rem;
  width: 28px;
  height: 28px;
  opacity: 0.4;
  transition: opacity 0.25s ease;
}

.channel-phone:hover .channel-call {
  opacity: 1;
}

.call-pulse {
  position: relative;
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success, #00E676);
  margin-top: 9px;
  margin-left: 9px;
}

.call-pulse::before,
.call-pulse::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--success, #00E676);
  opacity: 0;
}

.channel-phone:hover .call-pulse::before {
  animation: contactCallRing 1.2s ease-out infinite;
}

.channel-phone:hover .call-pulse::after {
  animation: contactCallRing 1.2s ease-out 0.4s infinite;
}

@keyframes contactCallRing {
  0% { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* 地址卡片 */
.channel-address {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.channel-address .channel-icon {
  flex-shrink: 0;
  margin-bottom: 0;
}

.channel-address-copy {
  flex: 1;
  width: 100%;
}

.channel-code {
  font-family: var(--font-mono, monospace);
  font-size: 0.7rem;
  color: var(--text-dim, #8899AA);
  letter-spacing: 0.1em;
  border-top: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  padding-top: 0.6rem;
  width: 100%;
}

/* ===== 响应说明 ===== */
.contact-response {
  padding: 3.5rem 0;
  position: relative;
}

.contact-response::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), transparent);
  pointer-events: none;
}

.response-grid {
  display: grid;
  gap: 1.5rem;
}

.response-card {
  background: linear-gradient(135deg, var(--contact-panel, #141B2D), var(--contact-panel-soft, #1A2333));
  border: 1px solid var(--contact-blue, rgba(0, 229, 255, 0.35));
  padding: 1.75rem 1.5rem;
  clip-path: polygon(0 0, calc(100% - var(--contact-clip, 14px)) 0, 100% var(--contact-clip, 14px), 100% 100%, var(--contact-clip, 14px) 100%, 0 calc(100% - var(--contact-clip, 14px)));
}

.response-card h3 {
  font-size: 1.15rem;
  font-weight: 900;
  margin: 0 0 1rem;
  color: var(--text-main, #E0E6ED);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.response-card h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent-blue, #00E5FF);
  flex-shrink: 0;
}

.response-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.response-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
}

.response-list li:last-child {
  border-bottom: 0;
}

.response-num {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  color: var(--accent-orange, #FF6A00);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.response-text strong {
  font-size: 0.95rem;
  color: var(--text-main, #E0E6ED);
  display: block;
}

.response-text p {
  font-size: 0.85rem;
  color: var(--text-dim, #8899AA);
  line-height: 1.5;
  margin: 0.25rem 0 0;
}

.response-figure {
  margin: 0;
  border: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  clip-path: polygon(var(--contact-clip, 14px) 0, 100% 0, 100% calc(100% - var(--contact-clip, 14px)), calc(100% - var(--contact-clip, 14px)) 100%, 0 100%, 0 var(--contact-clip, 14px));
  background: var(--contact-panel, #141B2D);
}

.response-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.response-figure .img-label {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-mono, monospace);
  font-size: 0.7rem;
  color: var(--text-dim, #8899AA);
  border-top: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  letter-spacing: 0.15em;
}

/* ===== 自助帮助 ===== */
.contact-self-help {
  padding: 3.5rem 0 4rem;
  position: relative;
}

.help-grid {
  display: grid;
  gap: 1.25rem;
}

.help-card {
  position: relative;
  display: block;
  background: var(--contact-panel, #141B2D);
  border: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
  padding: 1.75rem 1.5rem 1.5rem;
  text-decoration: none;
  color: inherit;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-clip, 14px)), calc(100% - var(--contact-clip, 14px)) 100%, 0 100%);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.help-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 106, 0, 0.5);
  background: var(--contact-panel-soft, #1A2333);
}

.help-code {
  display: inline-block;
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  color: var(--accent-blue, #00E5FF);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 0.2rem 0.5rem;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.help-card h3 {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--text-main, #E0E6ED);
  margin: 0 0 0.5rem;
}

.help-card p {
  font-size: 0.88rem;
  color: var(--text-dim, #8899AA);
  line-height: 1.7;
  margin: 0 0 1rem;
}

.help-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-orange, #FF6A00);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.help-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

.help-card:hover .help-link::after {
  transform: translateX(4px);
}

/* ===== 桌面端布局 ===== */
@media (min-width: 768px) {
  .contact-hero {
    padding: 3.5rem 0 4rem;
  }

  .contact-hero-grid {
    grid-template-columns: 3fr 2fr;
    align-items: start;
    gap: 2.5rem;
  }

  .contact-hero-copy {
    padding-right: 2rem;
  }

  .channel-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 1.5rem;
  }

  .channel-mail {
    grid-column: 1;
    grid-row: 1;
  }

  .channel-phone {
    grid-column: 2;
    grid-row: 1;
    margin-top: 24px;
  }

  .channel-address {
    grid-column: 1 / -1;
    grid-row: 2;
    flex-direction: row;
    align-items: center;
    gap: 1.5rem;
  }

  .channel-address-copy {
    width: auto;
  }

  .channel-code {
    border-top: 0;
    border-left: 1px solid var(--contact-line, rgba(176, 190, 205, 0.14));
    padding-top: 0;
    padding-left: 0.75rem;
    width: auto;
    align-self: center;
  }

  .response-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 2rem;
  }

  .help-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (min-width: 1200px) {
  .contact-hero-grid {
    grid-template-columns: 1.3fr 1fr;
  }

  .channel-grid {
    grid-template-columns: 1.25fr 0.75fr;
  }
}