.page-contact {
  --cut: 16px;
  background: var(--jade);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact a {
  color: inherit;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-contact .crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ============ 首屏框景 ============ */
.page-contact .ct-hero {
  padding-block: clamp(22px, 5vw, 48px) clamp(38px, 6vw, 72px);
}

.page-contact .ct-hero__frame {
  position: relative;
  padding: clamp(30px, 5vw, 58px) clamp(20px, 4vw, 52px) clamp(32px, 4.5vw, 54px);
  border: 1px solid rgba(11, 29, 58, .16);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .55), rgba(255, 255, 255, 0) 70%);
}

.page-contact .ct-hero__frame::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: -1px;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, rgba(11, 29, 58, .28) 0 1px, transparent 1px 14px);
}

.page-contact .ct-hero__frame::after {
  content: "";
  position: absolute;
  left: clamp(20px, 4vw, 52px);
  bottom: 0;
  width: 84px;
  height: 3px;
  background: var(--red);
}

.page-contact .ct-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-contact .ct-hero__zone {
  font-size: var(--fs-12);
  letter-spacing: .22em;
  color: var(--red);
  padding-left: 14px;
  position: relative;
}

.page-contact .ct-hero__zone::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 1px;
  background: var(--red);
}

.page-contact .ct-hero__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: rgba(11, 29, 58, .48);
}

.page-contact h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(var(--fs-40), 7.2vw, var(--fs-96));
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  color: var(--night);
  max-width: 15ch;
}

.page-contact .ct-hero .lede {
  max-width: 62ch;
  font-size: clamp(var(--fs-16), 1.5vw, var(--fs-20));
  line-height: 1.85;
  color: rgba(26, 26, 26, .82);
  margin: 0 0 clamp(24px, 3.4vw, 36px);
}

.page-contact .ct-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .ct-hero__media {
  margin: clamp(22px, 3.4vw, 38px) 0 0;
  background:
    repeating-linear-gradient(135deg, rgba(11, 29, 58, .06) 0 10px, rgba(11, 29, 58, .02) 10px 20px);
  overflow: hidden;
}

.page-contact .ct-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.7) contrast(1.04);
}

/* ============ 通用区块头 ============ */
.page-contact .ct-head {
  max-width: 68ch;
}

.page-contact .ct-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(var(--fs-28), 3.6vw, var(--fs-40));
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--night);
  margin: 10px 0 14px;
}

.page-contact .ct-head__sub {
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(26, 26, 26, .76);
  margin: 0;
}

.page-contact .ct-head__sub a,
.page-contact .ct-track__note a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ============ 联络方式矩阵 ============ */
.page-contact .ct-channels {
  padding-block: clamp(34px, 5vw, 60px);
}

.page-contact .ct-chan-grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(26px, 3.6vw, 42px);
}

.page-contact .ct-chan {
  position: relative;
  padding: clamp(26px, 3vw, 34px) clamp(20px, 2.6vw, 28px) clamp(26px, 3vw, 34px);
  background: var(--sand);
  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 .ct-chan::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 58px;
  height: 3px;
  background: var(--red);
}

.page-contact .ct-chan__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--red);
  margin-bottom: 14px;
}

.page-contact .ct-chan__ttl {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.3;
  color: var(--night);
  margin: 0 0 12px;
}

.page-contact .ct-chan__val {
  font-family: var(--font-mono);
  font-size: clamp(var(--fs-14), 1.6vw, var(--fs-16));
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--night);
  word-break: break-all;
  margin: 0 0 16px;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(11, 29, 58, .26);
}

.page-contact .ct-chan__use {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: rgba(26, 26, 26, .78);
}

/* ============ 工单场景 ============ */
.page-contact .ct-ticket {
  padding-block: clamp(38px, 6vw, 76px);
  background:
    linear-gradient(180deg, rgba(228, 223, 214, .5), rgba(228, 223, 214, 0) 40%);
}

.page-contact .ct-ticket__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-contact .ct-cases {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid rgba(11, 29, 58, .16);
}

.page-contact .ct-case {
  border-bottom: 1px solid rgba(11, 29, 58, .16);
}

.page-contact .ct-case > summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: clamp(18px, 2.6vw, 24px) 46px clamp(18px, 2.6vw, 24px) 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(var(--fs-16), 1.9vw, var(--fs-20));
  line-height: 1.5;
  color: var(--night);
}

.page-contact .ct-case > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-case > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--red);
  transition: transform 240ms var(--ease);
}

.page-contact .ct-case[open] > summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-contact .ct-case[open] > summary {
  color: var(--red-deep);
}

.page-contact .ct-case__no {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--gold);
  margin-right: 12px;
  vertical-align: 2px;
}

.page-contact .ct-case__body {
  padding: 0 0 clamp(22px, 3vw, 30px);
  max-width: 66ch;
}

.page-contact .ct-case__body p {
  margin: 0 0 12px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(26, 26, 26, .8);
}

.page-contact .ct-case__need {
  font-size: var(--fs-14) !important;
  letter-spacing: .04em;
  color: var(--night) !important;
  margin-top: 18px !important;
}

.page-contact .ct-case__body ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-case__body li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(26, 26, 26, .78);
}

.page-contact .ct-case__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .9em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

/* 工单侧栏 */
.page-contact .ct-ticket__aside {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
  align-content: start;
}

.page-contact .ct-ticket__fig {
  margin: 0;
  background:
    repeating-linear-gradient(135deg, rgba(11, 29, 58, .06) 0 10px, rgba(11, 29, 58, .02) 10px 20px);
  overflow: hidden;
}

.page-contact .ct-ticket__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.78);
}

.page-contact .ct-track {
  padding: clamp(22px, 3vw, 30px);
}

.page-contact .ct-track__ttl {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--night);
  margin: 0 0 18px;
}

.page-contact .ct-track__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .ct-track__list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(11, 29, 58, .12);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(26, 26, 26, .8);
}

.page-contact .ct-track__list li:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-track__no {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gold);
  padding-top: .35em;
}

.page-contact .ct-track__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(11, 29, 58, .24);
  font-size: var(--fs-12);
  line-height: 1.8;
  color: rgba(26, 26, 26, .62);
}

/* ============ 响应时效 ============ */
.page-contact .ct-facts {
  padding-block: clamp(34px, 5vw, 64px);
}

.page-contact .ct-fact-grid {
  display: grid;
  gap: 1px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  background: rgba(11, 29, 58, .14);
  border: 1px solid rgba(11, 29, 58, .14);
}

.page-contact .ct-fact {
  background: var(--jade);
  padding: clamp(24px, 3vw, 34px) clamp(20px, 2.6vw, 30px);
}

.page-contact .ct-fact__k {
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--red);
  margin-bottom: 14px;
}

.page-contact .ct-fact__v {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(var(--fs-28), 4vw, var(--fs-40));
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--night);
}

.page-contact .ct-fact__u {
  font-family: var(--font-body);
  font-size: var(--fs-14);
  letter-spacing: .06em;
  color: rgba(11, 29, 58, .6);
  margin-left: 8px;
  vertical-align: .12em;
}

.page-contact .ct-fact__n {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: rgba(26, 26, 26, .76);
}

/* ============ 合作 ============ */
.page-contact .ct-coop {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-contact .ct-coop__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-contact .ct-coop__lede {
  margin: clamp(18px, 2.6vw, 26px) 0 clamp(22px, 3vw, 30px);
  font-size: var(--fs-16);
  line-height: 1.9;
  color: rgba(26, 26, 26, .8);
  max-width: 56ch;
}

.page-contact .ct-coop__need {
  padding: clamp(22px, 3vw, 30px);
}

.page-contact .ct-coop__needttl {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--night);
  margin: 0 0 16px;
}

.page-contact .ct-coop__need ul {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-contact .ct-coop__need li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 9px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: rgba(26, 26, 26, .8);
}

.page-contact .ct-coop__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

.page-contact .ct-coop__neednote {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(11, 29, 58, .24);
  font-size: var(--fs-12);
  line-height: 1.8;
  color: rgba(26, 26, 26, .66);
  word-break: break-all;
}

.page-contact .ct-coop__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(11, 29, 58, .16);
}

.page-contact .ct-coop__item {
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid rgba(11, 29, 58, .16);
}

.page-contact .ct-coop__item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(var(--fs-16), 2vw, var(--fs-20));
  line-height: 1.45;
  color: var(--night);
  margin: 14px 0 10px;
}

.page-contact .ct-coop__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: rgba(26, 26, 26, .78);
  max-width: 62ch;
}

/* ============ 底部深色信息条 ============ */
.page-contact .ct-strip {
  margin-top: clamp(40px, 6vw, 84px);
  background: var(--night);
  color: var(--jade);
  padding-block: clamp(38px, 5.5vw, 68px);
  border-bottom: 3px solid var(--gold);
}

.page-contact .ct-strip__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.page-contact .ct-strip__k {
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--gold);
  margin: 0 0 12px;
}

.page-contact .ct-strip__v {
  margin: 0 0 6px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: rgba(247, 245, 240, .84);
  max-width: 42ch;
}

.page-contact .ct-strip__v--mono {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: rgba(242, 217, 138, .9);
  margin-top: 12px;
}

/* ============ 断点 ============ */
@media (min-width: 640px) {
  .page-contact .ct-fact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .ct-strip__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .ct-chan-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .ct-ticket__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
  .page-contact .ct-ticket__aside {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }
  .page-contact .ct-coop__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-contact .ct-hero__frame {
    padding-inline: clamp(40px, 5vw, 72px) clamp(40px, 5vw, 72px);
  }
  .page-contact .ct-case > summary {
    display: flex;
    align-items: baseline;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-case > summary::after {
    transition: none;
  }
}