@keyframes contact-grid-drift {
  from { background-position: 0 0; }
  to   { background-position: 0 52px; }
}

@keyframes contact-ring-spin {
  to { transform: rotate(360deg); }
}

@keyframes contact-signal {
  0%   { transform: scale(0.3); opacity: 1; }
  100% { transform: scale(1); opacity: 0; }
}

/* ========= 联系页 · 专属样式 ========= */
.page-contact {
  --contact-clip: 20px;
  background: var(--bg-deep);
  color: var(--ink);
  overflow-x: clip;
}

.page-contact .breadcrumb {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 18px var(--container-pad) 0;
}

.page-contact .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-faint);
}

.page-contact .breadcrumb a {
  color: var(--ink-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease-out);
}

.page-contact .breadcrumb a:hover {
  color: var(--green);
}

/* ---------- 首屏分屏 ---------- */

.page-contact .contact-split {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  gap: 40px;
  padding: 38px var(--container-pad) 56px;
}

.page-contact .contact-split__grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(139, 92, 246, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 92, 246, 0.10) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 72%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 72%);
  animation: contact-grid-drift 14s linear infinite alternate;
}

.page-contact .contact-split__deco {
  position: absolute;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-split__deco--bolt {
  top: 8%;
  right: 5%;
  width: 22px;
  height: 38px;
  background: var(--purple);
  clip-path: polygon(50% 0, 100% 52%, 60% 52%, 42% 100%, 14% 42%, 50% 42%);
  filter: drop-shadow(0 0 14px rgba(139, 92, 246, 0.75));
  transform: rotate(12deg);
}

.page-contact .contact-split__deco--triangle {
  bottom: -1px;
  left: -1px;
  width: 0;
  height: 0;
  border-bottom: 68px solid rgba(255, 106, 0, 0.32);
  border-right: 96px solid transparent;
}

.page-contact .contact-split__deco--ring {
  top: 38%;
  left: 58%;
  width: 180px;
  height: 180px;
  border: 1px dashed rgba(139, 92, 246, 0.28);
  border-radius: 50%;
  animation: contact-ring-spin 18s linear infinite;
}

.page-contact .contact-split__left,
.page-contact .contact-split__right {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
  align-content: start;
}

.page-contact .contact-split h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.9rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--ink);
  transform: skewX(-3deg);
}

.page-contact .contact-split__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .contact-split__subtitle {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  transform: skewX(-3deg);
}

/* ---------- 邮箱广告牌 ---------- */

.page-contact .mail-billboard {
  position: relative;
  min-height: 300px;
  margin: 4px 0 0;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--contact-clip)) 0, 100% var(--contact-clip), 100% 100%, 0 100%);
}

.page-contact .mail-billboard::after {
  content: "MAIL";
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8rem);
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.04);
  pointer-events: none;
  z-index: 0;
}

.page-contact .mail-billboard__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) brightness(0.55) contrast(1.08);
  transition: transform 0.6s var(--ease-out);
}

.page-contact .mail-billboard:hover .mail-billboard__img {
  transform: scale(1.04);
}

.page-contact .mail-billboard__body {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  display: grid;
  gap: 7px;
  padding: 76px 24px 28px;
  background: linear-gradient(to bottom, rgba(10, 11, 15, 0.02), rgba(10, 11, 15, 0.92) 72%);
}

.page-contact .mail-billboard__label {
  justify-self: start;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  background: rgba(10, 11, 15, 0.58);
}

.page-contact .mail-billboard__address {
  justify-self: start;
  user-select: all;
  -webkit-user-select: all;
  cursor: copy;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 5.2vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  word-break: break-all;
  color: var(--green);
  text-shadow: 0 0 18px rgba(57, 255, 136, 0.5), 0 0 42px rgba(57, 255, 136, 0.22);
  transform: skewX(-3deg);
}

.page-contact .mail-billboard__note {
  justify-self: start;
  padding: 2px 7px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ink-dim);
  background: rgba(10, 11, 15, 0.5);
}

/* ---------- 反馈步骤 ---------- */

.page-contact .feedback-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .feedback-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px 16px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-contact .feedback-steps__item:hover {
  transform: translateX(6px);
  border-color: rgba(57, 255, 136, 0.45);
}

.page-contact .feedback-steps__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(57, 255, 136, 0.35);
  border-radius: 50%;
  background: rgba(57, 255, 136, 0.07);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--green);
}

.page-contact .feedback-steps__body {
  display: grid;
  gap: 4px;
}

.page-contact .feedback-steps__body strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.page-contact .feedback-steps__body span {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-dim);
}

/* ---------- 服务时间 ---------- */

.page-contact .service-hours {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
  background: linear-gradient(90deg, rgba(255, 106, 0, 0.12), rgba(255, 106, 0, 0.02) 70%);
  border: 1px solid rgba(255, 106, 0, 0.25);
  border-left: 3px solid var(--orange);
}

.page-contact .service-hours__label {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.page-contact .service-hours__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .service-hours__note {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-contact .service-hours__note a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 信号波纹装饰 ---------- */

.page-contact .signal-demo {
  position: relative;
  width: 88px;
  height: 88px;
  justify-self: end;
}

.page-contact .signal-demo__pulse {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  border-top-color: var(--green);
  border-right-color: rgba(57, 255, 136, 0.35);
  border-radius: 50%;
  animation: contact-signal 2.6s var(--ease-out) infinite;
}

.page-contact .signal-demo__pulse:nth-child(2) {
  animation-delay: 0.9s;
}

.page-contact .signal-demo__pulse:nth-child(3) {
  animation-delay: 1.8s;
}

.page-contact .signal-demo__core {
  position: absolute;
  inset: 32%;
  background: var(--green);
  border-radius: 50%;
  filter: drop-shadow(0 0 10px var(--green));
}

/* ---------- 联系方式卡片 ---------- */

.page-contact .contact-cards-section {
  padding-block: clamp(48px, 7vw, 88px);
  background: var(--bg-panel);
  border-block: 1px solid var(--line);
}

.page-contact .contact-cards {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-contact .contact-card {
  position: relative;
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 26px 22px 24px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-contact .contact-card:hover {
  transform: translateY(-3px);
  border-color: rgba(57, 255, 136, 0.3);
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--ink);
  transform: skewX(-3deg);
}

.page-contact .contact-card__primary {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.5;
  word-break: break-all;
  color: var(--green);
}

.page-contact .contact-card__primary--plain {
  font-family: var(--font-body);
  font-size: 1.02rem;
  color: var(--ink);
}

.page-contact .contact-card__secondary {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-contact .contact-card__meta {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ink-faint);
}

.page-contact .contact-card__flag {
  position: absolute;
  top: -1px;
  right: -1px;
  padding: 5px 12px 5px 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--bg-deep);
  background: var(--green);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-contact .contact-card__flag--green {
  background: var(--green);
  color: var(--bg-deep);
}

.page-contact .contact-note {
  margin-top: 20px;
  padding: 14px 16px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ink-dim);
  background: rgba(139, 92, 246, 0.08);
  border: 1px dashed rgba(139, 92, 246, 0.35);
}

/* ---------- 服务网络地图 ---------- */

.page-contact .map-section {
  padding-block: clamp(48px, 7vw, 88px);
  overflow: hidden;
}

.page-contact .map-section__grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-contact .map-visual {
  margin: 4px;
  padding: 10px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  transform: rotate(-1deg);
}

.page-contact .map-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) brightness(0.8) contrast(1.04);
}

.page-contact .map-visual figcaption {
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.page-contact .map-stats {
  display: grid;
  gap: 18px;
  align-content: center;
}

.page-contact .map-stats__lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-contact .map-stats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.page-contact .map-stats__list li {
  display: grid;
  gap: 2px;
  padding: 14px 14px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--purple);
}

.page-contact .map-stats__list strong {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  line-height: 1.2;
  color: var(--ink);
}

.page-contact .map-stats__list span {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--ink-dim);
}

.page-contact .map-section__link {
  display: inline-block;
  width: fit-content;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--bg-deep);
  background: var(--green);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: filter var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.page-contact .map-section__link:hover {
  filter: brightness(1.1);
  transform: translateX(4px);
}

/* ---------- 相关页面 ---------- */

.page-contact .related-section {
  padding-block: clamp(44px, 6vw, 72px);
  background:
    linear-gradient(rgba(57, 255, 136, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 136, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  background-position: center;
  border-top: 1px solid var(--line);
}

.page-contact .related-section__inner {
  max-width: 920px;
}

.page-contact .related-section__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  line-height: 1.15;
  transform: skewX(-3deg);
}

.page-contact .related-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .related-list a {
  position: relative;
  display: block;
  padding: 14px 18px 14px 40px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.94rem;
  line-height: 1.5;
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.page-contact .related-list a::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  translate: 0 -50%;
  width: 8px;
  height: 8px;
  background: var(--purple);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-contact .related-list a:hover {
  color: var(--ink);
  border-color: rgba(57, 255, 136, 0.35);
  transform: translateX(6px);
}

.page-contact .related-list a:hover::before {
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
}

/* ---------- 响应式：平板 / 桌面 ---------- */

@media (min-width: 640px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .map-visual img {
    max-height: 420px;
    object-fit: cover;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 52px;
    padding-block: 56px 76px;
  }

  .page-contact .contact-split__right {
    padding-top: 24px;
  }

  .page-contact .mail-billboard {
    min-height: 380px;
  }

  .page-contact .mail-billboard__body {
    padding: 110px 32px 32px;
  }

  .page-contact .contact-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .map-section__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: center;
  }
}

/* ---------- 可访问性：减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.page-contact a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}