.page-contact {
  --contact-soft: #0C2118;
  --contact-panel-edge: rgba(39, 196, 107, .18);
  background-color: var(--ink);
  color: var(--paper);
}

.page-contact .contact-crumb {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-crumb:hover,
.page-contact .contact-crumb:focus-visible {
  color: var(--pitch);
  border-bottom-color: var(--pitch);
}

.page-contact .display-title {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 8.4vw, 4.6rem);
  line-height: .98;
  letter-spacing: -.03em;
  font-weight: 300;
  margin: .3em 0 .45em;
  color: var(--paper);
}

.page-contact .lede {
  font-family: var(--font-body);
  color: var(--muted);
  max-width: 58ch;
  line-height: 1.75;
}

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(39, 196, 107, .09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(39, 196, 107, .09) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 70% 20%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 70% 20%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 6vw, 52px);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-hero__panel {
  position: relative;
  padding: clamp(22px, 5vw, 34px);
  background:
    linear-gradient(158deg, #143A2D 0%, var(--panel) 58%);
  border: 1px solid var(--contact-panel-edge);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-contact .contact-hero__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--pitch);
  margin: 0 0 18px;
}

.page-contact .contact-hero__list {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-contact .contact-hero__item {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-hero__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-hero__item dt {
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-contact .contact-hero__value {
  margin: 0;
  font-size: .98rem;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-hero__value--amber {
  font-family: var(--font-mono);
  color: var(--amber);
  font-size: .92rem;
}

.page-contact .contact-hero__value--mono {
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--new);
}

.page-contact .contact-hero__foot {
  margin: 20px 0 0;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--muted);
  padding-left: 14px;
  border-left: 2px solid var(--shot);
}

/* ===== 通道 ===== */
.page-contact .contact-channel__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-contact .contact-channel__note {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.75;
  font-size: .95rem;
}

.page-contact .contact-channel__figure {
  margin: 0 0 clamp(24px, 4vw, 38px);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background-color: var(--contact-soft);
}

.page-contact .contact-channel__cards {
  display: grid;
  gap: 16px;
}

.page-contact .contact-channel__card {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .contact-channel__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--pitch);
  margin-bottom: 12px;
}

.page-contact .contact-channel__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -.01em;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact .contact-channel__desc {
  margin: 0 0 16px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-channel__addr {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .84rem;
  color: var(--amber);
  word-break: break-word;
}

/* ===== 工单 ===== */
.page-contact .contact-ticket {
  background: linear-gradient(180deg, var(--contact-soft) 0%, var(--ink) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-ticket__grid {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
}

.page-contact .contact-ticket__intro {
  margin: 14px 0 24px;
  color: var(--muted);
  line-height: 1.75;
  font-size: .95rem;
  max-width: 46ch;
}

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

.page-contact .contact-cat__item {
  position: relative;
  padding: 18px 20px 20px 22px;
  background: var(--panel);
  border-left: 4px solid var(--line);
}

.page-contact .contact-cat__item--sync {
  border-left-color: var(--shot);
}

.page-contact .contact-cat__item--version {
  border-left-color: var(--new);
}

.page-contact .contact-cat__item--stat {
  border-left-color: var(--amber);
}

.page-contact .contact-cat__item--access {
  border-left-color: var(--old);
}

.page-contact .contact-cat__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  padding: 3px 8px;
  margin-bottom: 10px;
  color: var(--ink);
  background: var(--muted);
}

.page-contact .contact-cat__item--sync .contact-cat__tag {
  background: var(--shot);
  color: var(--ink-deep);
}

.page-contact .contact-cat__item--version .contact-cat__tag {
  background: var(--new);
  color: var(--ink-deep);
}

.page-contact .contact-cat__item--stat .contact-cat__tag {
  background: var(--amber);
  color: var(--ink-deep);
}

.page-contact .contact-cat__item--access .contact-cat__tag {
  background: var(--old);
  color: var(--ink-deep);
}

.page-contact .contact-cat__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 8px;
  color: var(--paper);
  letter-spacing: -.01em;
}

.page-contact .contact-cat__desc {
  margin: 0;
  font-size: .89rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-ticket__col--side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-contact .contact-brief {
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-contact .contact-brief__title {
  margin-top: 8px;
}

.page-contact .contact-brief__lede {
  margin: 12px 0 20px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-brief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-brief__row {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-brief__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .contact-brief__key {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .14em;
  color: var(--pitch);
}

.page-contact .contact-brief__val {
  font-size: .88rem;
  line-height: 1.65;
  color: var(--paper);
}

.page-contact .contact-sla {
  padding: 22px;
  background: linear-gradient(135deg, rgba(255, 106, 42, .16), rgba(247, 185, 59, .06));
  border: 1px solid rgba(255, 106, 42, .38);
}

.page-contact .contact-sla__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 6vw, 2.3rem);
  letter-spacing: -.02em;
  color: var(--shot);
  margin: 0;
  line-height: 1.1;
}

.page-contact .contact-sla__label {
  margin: 6px 0 12px;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--paper);
}

.page-contact .contact-sla__text {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 时间轴 ===== */
.page-contact .contact-time__head {
  max-width: 60ch;
  margin-bottom: clamp(22px, 4vw, 32px);
}

.page-contact .contact-time__note {
  margin: 14px 0 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-time__figure {
  margin: 0 0 clamp(26px, 4vw, 38px);
}

.page-contact .contact-time__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  counter-reset: step;
}

.page-contact .contact-time__step {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--line);
}

.page-contact .contact-time__step::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--pitch);
  transform: rotate(45deg);
}

.page-contact .contact-time__marker {
  display: block;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--amber);
  margin-bottom: 6px;
}

.page-contact .contact-time__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ===== 自助入口 ===== */
.page-contact .contact-jump {
  background: var(--contact-soft);
  border-top: 1px solid var(--line);
}

.page-contact .contact-jump__head {
  max-width: 58ch;
  margin-bottom: clamp(22px, 4vw, 32px);
}

.page-contact .contact-jump__note {
  margin: 14px 0 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-jump__grid {
  display: grid;
  gap: 14px;
}

.page-contact .contact-jump__item {
  display: grid;
  gap: 8px;
  padding: 20px;
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-contact .contact-jump__item:hover,
.page-contact .contact-jump__item:focus-visible {
  border-color: var(--pitch);
  transform: translateY(-2px);
}

.page-contact .contact-jump__kicker {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--pitch);
}

.page-contact .contact-jump__title {
  font-size: .96rem;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .contact-jump__go {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--amber);
}

/* ===== 地址与备案 ===== */
.page-contact .contact-office__card {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(24px, 5vw, 40px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--pitch);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-contact .contact-office__addr {
  margin: 14px 0 12px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .contact-office__hint {
  margin: 0;
  font-size: .87rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 48ch;
}

.page-contact .contact-office__meta {
  margin: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .contact-office__row {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-office__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .contact-office__row dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .contact-office__row dd {
  margin: 0;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-office__icp {
  font-family: var(--font-mono);
  color: var(--amber);
  letter-spacing: .04em;
}

.page-contact .contact-office__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
  font-size: .82rem;
  color: var(--muted);
}

.page-contact .contact-office__legal a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-office__legal a:hover,
.page-contact .contact-office__legal a:focus-visible {
  color: var(--pitch);
  border-bottom-color: var(--pitch);
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-contact .contact-channel__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-jump__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-time__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-contact .contact-channel__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-ticket__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-contact .contact-time__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-jump__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-office__card {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-contact .contact-office__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-jump__item,
  .page-contact .contact-crumb,
  .page-contact .contact-office__legal a {
    transition: none;
  }

  .page-contact .contact-jump__item:hover {
    transform: none;
  }
}