.page-contact {
  background: var(--bg-primary);
  color: var(--text-body);
  font-family: var(--font-body);
  line-height: 1.8;
  overflow-x: hidden;
}
.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}
.page-contact .use-numeric {
  font-family: var(--font-numeric);
  font-weight: 800;
  letter-spacing: 0.02em;
}
.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
  transform: skewX(-2deg);
}
.page-contact h1 {
  font-size: clamp(2rem, 6.4vw, 3.6rem);
  line-height: 1.08;
  margin: 0 0 1.25rem;
}
.page-contact h2 {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1.3;
  margin: 0;
}
.page-contact .kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-contact .kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent-alert);
  transform: skewX(-24deg);
}
.page-contact .section-head {
  margin-bottom: 2rem;
}

/* 刊头横幅 */
.page-contact .contact-masthead {
  position: relative;
  padding: 2rem 0 2.75rem;
  border-bottom: 2px solid var(--line-grid);
  background:
    radial-gradient(ellipse 55% 90% at 85% 10%, rgba(0, 232, 143, 0.08), transparent 65%),
    linear-gradient(rgba(40, 67, 110, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 67, 110, 0.06) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
}
.page-contact .contact-masthead::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-speed), var(--accent-alert) 65%, transparent);
  transform: skewX(-24deg);
  transform-origin: left center;
}
.page-contact .masthead-lead {
  max-width: 56ch;
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-body);
}
.page-contact .masthead-speed {
  display: block;
  width: 100%;
  height: auto;
  max-width: 480px;
  margin-top: 2.25rem;
}

/* 邮箱主视觉 */
.page-contact .mail-focus {
  padding: 3rem 0;
}
.page-contact .mail-focus-grid {
  display: grid;
  gap: 1.5rem;
}
.page-contact .mail-focus-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--line-grid);
  padding: 2.25rem 1.4rem;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}
.page-contact .mail-focus-card::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 0;
  width: 3px;
  height: 46px;
  background: var(--accent-alert);
  transform: skewY(-24deg);
}
.page-contact .mail-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.15rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-contact .mail-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-speed);
  transform: rotate(45deg);
}
.page-contact .mail-address {
  display: block;
  font-family: var(--font-numeric);
  font-size: clamp(1.1rem, 5vw, 2.75rem);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.005em;
  word-break: break-all;
  border-bottom: 2px dashed var(--accent-speed);
  padding-bottom: 0.8rem;
  margin-bottom: 1.05rem;
  transition: color 0.12s ease, text-shadow 0.12s ease;
}
.page-contact .mail-address:hover {
  color: var(--accent-speed);
  text-shadow: 0 0 32px rgba(0, 232, 143, 0.2);
}
.page-contact .mail-hint {
  margin: 0 0 1.25rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-body);
}
.page-contact .mail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.page-contact .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--line-grid);
  color: var(--text-body);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.32rem 0.7rem;
  background: transparent;
}
.page-contact .tag-alert {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--accent-alert);
  background: var(--accent-alert);
  color: var(--bg-primary);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.32rem 0.7rem;
}
.page-contact .mail-figure {
  position: relative;
  margin: 0;
  background: var(--bg-surface);
  border: 1px solid var(--line-grid);
}
.page-contact .mail-figure::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-speed), var(--accent-alert));
  transform: skewX(-24deg);
  transform-origin: left center;
}
.page-contact .mail-figure-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}
.page-contact .figure-caption {
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--line-grid);
}

/* 服务响应说明 */
.page-contact .respond-part {
  position: relative;
  padding: 3rem 0;
  border-top: 1px solid var(--line-grid);
  border-bottom: 1px solid var(--line-grid);
  background:
    linear-gradient(135deg, rgba(0, 232, 143, 0.06), transparent 38%),
    var(--bg-primary);
}
.page-contact .respond-lead {
  display: flex;
  align-items: flex-start;
  gap: 1.15rem;
  margin-bottom: 2rem;
}
.page-contact .respond-num {
  display: inline-block;
  font-family: var(--font-numeric);
  font-size: clamp(3.5rem, 12vw, 5.25rem);
  font-weight: 900;
  line-height: 0.92;
  color: var(--accent-alert);
  background: rgba(255, 122, 41, 0.12);
  padding: 0.4rem 0.7rem;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.page-contact .respond-lead-copy p {
  margin: 0.55rem 0 0;
  max-width: 44ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-body);
}
.page-contact .queue-board {
  background: var(--bg-surface);
  border: 1px solid var(--line-grid);
  padding: 1.5rem 1.25rem;
  margin-bottom: 2rem;
}
.page-contact .queue-label {
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-contact .queue-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 96px;
}
.page-contact .queue-bar {
  flex: 1;
  opacity: 0.95;
  background: linear-gradient(180deg, var(--accent-speed), rgba(0, 232, 143, 0.35));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), 0 100%);
}
.page-contact .queue-bar:nth-child(1) { height: 46%; }
.page-contact .queue-bar:nth-child(2) { height: 74%; }
.page-contact .queue-bar:nth-child(3) { height: 38%; }
.page-contact .queue-bar:nth-child(4) { height: 86%; }
.page-contact .queue-bar:nth-child(5) { height: 60%; }
.page-contact .queue-bar:nth-child(6) { height: 94%; }
.page-contact .queue-bar:nth-child(7) { height: 50%; }
.page-contact .queue-meta {
  display: block;
  margin-top: 0.8rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.page-contact .respond-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-contact .respond-stat {
  background: var(--bg-surface);
  border-top: 2px solid var(--accent-speed);
  padding: 1.1rem 0.5rem 0.85rem;
  text-align: center;
}
.page-contact .stat-num {
  display: block;
  font-family: var(--font-numeric);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
}
.page-contact .stat-unit {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.74rem;
  color: var(--text-muted);
}
.page-contact .stat-desc {
  margin: 0.4rem 0 0;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--text-body);
}
.page-contact .respond-boundary {
  margin: 0;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--accent-alert);
  background: rgba(255, 122, 41, 0.07);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-body);
}

/* 联系信息与备案 */
.page-contact .contact-listing {
  padding: 3.5rem 0;
}
.page-contact .list-grid {
  display: grid;
  gap: 1rem;
}
.page-contact .list-card {
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--line-grid);
  border-left: 3px solid var(--accent-speed);
  padding: 1.6rem 1.25rem;
}
.page-contact .list-card::after {
  content: "";
  position: absolute;
  right: -14px;
  top: -14px;
  width: 34px;
  height: 34px;
  background: var(--line-grid);
  transform: rotate(45deg);
}
.page-contact .card-label {
  display: inline-block;
  margin-bottom: 0.8rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--line-grid);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-contact .card-value {
  display: block;
  margin-bottom: 0.6rem;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
  text-decoration: none;
  word-break: break-word;
}
.page-contact .card-value:hover {
  color: var(--accent-speed);
}
.page-contact .card-note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--text-body);
}
.page-contact .addr-figure {
  margin: 1rem 0 1.5rem;
}
.page-contact .addr-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-grid);
  padding: 0.25rem;
}
.page-contact .label-icp {
  margin-top: 0.25rem;
}

/* 相关索引 */
.page-contact .editor-index {
  padding: 3.5rem 0 4rem;
  border-top: 1px solid var(--line-grid);
  background:
    repeating-linear-gradient(-24deg, rgba(40, 67, 110, 0.1) 0 2px, transparent 2px 14px),
    var(--bg-primary);
}
.page-contact .index-grid {
  display: grid;
  gap: 1rem;
}
.page-contact .index-card {
  --cut: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.9rem 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--line-grid);
  text-decoration: none;
  color: var(--text-body);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.page-contact .index-card:hover {
  border-color: var(--accent-speed);
  transform: translateX(5px);
  box-shadow: 6px 6px 0 rgba(0, 232, 143, 0.1);
}
.page-contact .index-card-order {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-alert);
}
.page-contact .index-card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}
.page-contact .index-card-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-body);
}

/* 桌面布局增强 */
@media (min-width: 900px) {
  .page-contact .contact-masthead {
    padding: 3.75rem 0 4.25rem;
  }
  .page-contact .masthead-inner {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
    align-items: center;
  }
  .page-contact .masthead-speed {
    margin: 0;
    justify-self: end;
  }
  .page-contact .mail-focus {
    padding: 4rem 0;
  }
  .page-contact .mail-focus-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2rem;
    align-items: stretch;
  }
  .page-contact .mail-focus-card {
    order: 1;
    padding: 2.75rem 2.5rem;
  }
  .page-contact .mail-figure {
    order: 0;
  }
  .page-contact .mail-figure-img {
    height: 100%;
    object-fit: cover;
  }
  .page-contact .figure-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    background: rgba(10, 22, 51, 0.82);
  }
  .page-contact .respond-inner {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem 3rem;
    align-items: start;
  }
  .page-contact .respond-lead {
    margin-bottom: 0;
  }
  .page-contact .queue-board {
    margin-bottom: 0;
  }
  .page-contact .respond-stats {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }
  .page-contact .respond-boundary {
    grid-column: 1 / -1;
    max-width: 58ch;
  }
  .page-contact .list-grid {
    grid-template-columns: 1fr 1fr 1.15fr;
    gap: 1.25rem;
    align-items: stretch;
  }
  .page-contact .list-card {
    padding: 2rem 1.75rem;
  }
  .page-contact .editor-index {
    padding: 4rem 0 4.5rem;
  }
  .page-contact .index-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
  .page-contact .index-card {
    padding: 2.25rem 1.75rem;
  }
}