.page-contact {
  background: var(--deep);
  color: var(--ink);
  overflow-x: hidden;
}

.page-contact .breadcrumbs {
  padding: 18px 0 0;
}

.page-contact h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 6vw, 40px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #fff;
  margin: 10px 0 14px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 28px 0 52px;
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(34, 231, 214, .16), transparent 62%),
    linear-gradient(165deg, var(--deep) 0%, var(--abyss) 100%);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 62%, rgba(196, 98, 63, .12) 100%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(31px, 8.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #fff;
  margin: 12px 0 16px;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 36em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-contact .contact-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.page-contact .contact-hero__factnum {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: -.01em;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .contact-hero__factlabel {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-faint);
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--night), var(--abyss));
  clip-path: polygon(0 0, 100% 0, 100% 86%, 86% 100%, 0 100%);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .84;
}

/* ---------- 五类通道 ---------- */
.page-contact .contact-channels {
  padding: 54px 0 62px;
}

.page-contact .contact-channels__intro {
  max-width: 44em;
}

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

.page-contact .channel {
  background: linear-gradient(170deg, rgba(12, 44, 74, .96), rgba(6, 26, 46, .96));
  border: 1px solid var(--rule);
  border-left: 3px solid rgba(34, 231, 214, .5);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  padding: 18px 20px 20px;
}

.page-contact .channel__head {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px 12px;
  min-height: 44px;
  padding: 4px 0;
}

.page-contact .channel__head::-webkit-details-marker {
  display: none;
}

.page-contact .channel__title {
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .channel__arrow {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .22s ease;
}

.page-contact .channel[open] .channel__arrow {
  transform: rotate(-135deg);
}

.page-contact .channel__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rule-soft);
}

.page-contact .channel__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .channel__body p:last-child {
  margin-bottom: 0;
}

.page-contact .channel__route {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-items: baseline;
  color: var(--mist);
}

.page-contact .channel__key {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--clay);
}

/* ---------- 提问格式 ---------- */
.page-contact .contact-mail {
  padding: 56px 0;
  background: linear-gradient(180deg, var(--night), var(--deep));
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}

.page-contact .contact-mail__inner {
  display: grid;
  gap: 28px;
}

.page-contact .mail-steps {
  list-style: none;
  counter-reset: step;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .mail-steps li {
  position: relative;
  padding-left: 44px;
}

.page-contact .mail-steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 3px;
  padding-left: 8px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--cyan);
}

.page-contact .mail-steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .mail-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .contact-mail__tpl {
  margin: 0;
}

.page-contact .tpl {
  margin: 0;
  padding: 18px 18px 20px;
  background: var(--abyss);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--cyan);
  font-family: var(--font-num);
  font-size: 12.5px;
  line-height: 2;
  color: var(--mist);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* ---------- 值守时段 ---------- */
.page-contact .contact-window {
  padding: 56px 0;
}

.page-contact .contact-window__inner {
  display: grid;
  gap: 30px;
}

.page-contact .contact-window__lead {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .window {
  margin-top: 26px;
}

.page-contact .window__bar {
  position: relative;
  height: 16px;
  background: rgba(90, 107, 120, .32);
  overflow: hidden;
}

.page-contact .window__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  right: 4.17%;
  background: linear-gradient(90deg, rgba(34, 231, 214, .45), var(--cyan));
  box-shadow: 0 0 20px rgba(34, 231, 214, .28);
}

.page-contact .window__scale {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-faint);
}

.page-contact .window__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-faint);
}

.page-contact .contact-window__figure {
  margin: 0;
  border: 1px solid var(--rule);
  border-top: 3px solid var(--clay);
  background: var(--abyss);
}

.page-contact .contact-window__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .9;
}

/* ---------- 记录核对 ---------- */
.page-contact .contact-fix {
  padding: 52px 0;
  background: var(--abyss);
}

.page-contact .contact-fix__card {
  padding: 30px 22px 28px;
  max-width: 880px;
}

.page-contact .contact-fix__card h2 {
  color: var(--deep);
  font-size: clamp(23px, 5.6vw, 34px);
  margin: 14px 0 12px;
}

.page-contact .contact-fix__card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(6, 26, 46, .82);
}

.page-contact .fix-list {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  border-top: 1px solid rgba(6, 26, 46, .18);
}

.page-contact .fix-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid rgba(6, 26, 46, .12);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(6, 26, 46, .78);
}

.page-contact .fix-list__k {
  flex: 0 0 4.6em;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--clay);
}

/* ---------- 合作沟通 ---------- */
.page-contact .contact-coop {
  padding: 54px 0 60px;
}

.page-contact .coop-grid {
  display: grid;
  gap: 0;
  margin-top: 24px;
  border-top: 1px solid var(--rule);
}

.page-contact .coop {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.page-contact .coop h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-contact .coop p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .coop__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-faint);
}

/* ---------- 页面尾部 ---------- */
.page-contact .contact-place {
  padding: 0 0 54px;
}

.page-contact .contact-links {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--rule-soft);
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-contact .contact-links a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-place__line {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: .04em;
  line-height: 1.8;
  color: var(--ink-faint);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
  }

  .page-contact .channel:nth-child(2n) {
    margin-top: 30px;
  }

  .page-contact .channel:nth-child(5) {
    grid-column: 1 / -1;
    margin-top: 0;
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 32px;
    border-bottom: 1px solid var(--rule-soft);
  }

  .page-contact .coop {
    border-bottom: 0;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: 44px 0 84px;
  }

  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 52px;
  }

  .page-contact .contact-hero__facts {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .contact-mail__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .contact-window__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }

  .page-contact .contact-fix__card {
    padding: 40px 46px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel__arrow {
    transition: none;
  }
}