.page-contact {
  --cc-pad: 20px;
  padding-bottom: 12px;
}

@media (min-width: 768px) {
  .page-contact {
    --cc-pad: 28px;
  }
}

@media (min-width: 1200px) {
  .page-contact {
    --cc-pad: 40px;
  }
}

/* 面包屑 */
.page-contact .crumbs {
  padding-top: 24px;
  padding-bottom: 4px;
}

/* ---------- 首屏分屏 ---------- */
.page-contact .cc-hero {
  padding-block: 22px 44px;
}

.page-contact .cc-hero-grid {
  display: grid;
  gap: 22px;
}

@media (min-width: 960px) {
  .page-contact .cc-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 34px;
    align-items: start;
  }
}

/* 联系信息档案卡 */
.page-contact .cc-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(158deg, #131E33 0%, var(--steel) 52%, #0E1626 100%);
  border: 1px solid var(--rail-line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-contact .cc-card-tex {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  pointer-events: none;
}

.page-contact .cc-card-rail {
  display: none;
  position: absolute;
  top: 26px;
  right: 12px;
  writing-mode: vertical-rl;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--mist);
  opacity: 0.72;
  z-index: 2;
}

@media (min-width: 768px) {
  .page-contact .cc-card-rail {
    display: block;
  }
}

.page-contact .cc-card-body {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  padding: var(--cc-pad);
}

@media (min-width: 768px) {
  .page-contact .cc-card-body {
    padding-right: calc(var(--cc-pad) + 30px);
  }
}

.page-contact .cc-kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .cc-card h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.2rem);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .cc-channels {
  display: grid;
  gap: 18px;
  margin: 4px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--rail-line);
}

.page-contact .cc-channel dt {
  margin-bottom: 7px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .cc-channel dd {
  margin: 0;
}

.page-contact .cc-big {
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(1.02rem, 4vw, 1.55rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--white);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px dashed var(--rail-line);
  padding-bottom: 4px;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-contact .cc-big:hover,
.page-contact .cc-big:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .cc-big:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.page-contact .cc-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* 首屏右侧速览 */
.page-contact .cc-hero-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .cc-hero-lead {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--white);
}

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

.page-contact .cc-glance li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 13px 16px;
  background: var(--steel);
  border-left: 3px solid var(--rail-line);
}

.page-contact .cc-glance li:nth-child(1) {
  border-left-color: var(--cyan);
}

.page-contact .cc-glance li:nth-child(2) {
  border-left-color: var(--magenta);
}

.page-contact .cc-glance li:nth-child(3) {
  border-left-color: var(--orange);
}

.page-contact .cc-glance-k {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .cc-glance-v {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.page-contact .cc-hero-foot {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 通用章节 ---------- */
.page-contact .cc-sec {
  padding-block: 42px;
  border-top: 1px solid var(--rail-line);
}

.page-contact .cc-sec-num {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-contact .cc-sec-head h2,
.page-contact .cc-coop-main h2,
.page-contact .cc-after h2,
.page-contact .cc-region h2 {
  margin: 0 0 12px;
  font-size: clamp(1.42rem, 4.6vw, 2.1rem);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .cc-sec-head {
  margin-bottom: 24px;
}

.page-contact .cc-sec-sub {
  margin: 0;
  max-width: var(--read-max);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 01 准备清单 ---------- */
.page-contact .cc-prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-contact .cc-prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-contact .cc-prep-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .cc-prep-item {
  padding: 18px 20px;
  background: var(--steel);
  border: 1px solid var(--rail-line);
  border-left: 3px solid var(--rail-line);
}

.page-contact .cc-prep-item:nth-child(1) {
  border-left-color: var(--cyan);
}

.page-contact .cc-prep-item:nth-child(2) {
  border-left-color: var(--indigo);
}

.page-contact .cc-prep-item:nth-child(3) {
  border-left-color: var(--orange);
}

.page-contact .cc-prep-item:nth-child(4) {
  border-left-color: var(--magenta);
}

.page-contact .cc-prep-item:nth-child(5) {
  border-left-color: var(--yellow);
}

.page-contact .cc-prep-idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .cc-prep-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .cc-prep-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .cc-prep-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .cc-prep-foot a,
.page-contact .cc-after-foot a,
.page-contact .cc-region-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--rail-line);
  transition: border-color var(--fast) var(--ease);
}

.page-contact .cc-prep-foot a:hover,
.page-contact .cc-after-foot a:hover,
.page-contact .cc-region-foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 02 请求类型 ---------- */
.page-contact .cc-band {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 24px;
  border: 1px solid var(--rail-line);
  background: var(--steel);
}

.page-contact .cc-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-contact .cc-tab {
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  color: var(--mist);
  background: var(--steel);
  border: 1px solid var(--rail-line);
  cursor: pointer;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease),
    border-color var(--fast) var(--ease);
}

.page-contact .cc-tab:hover {
  color: var(--white);
  border-color: var(--mist);
}

.page-contact .cc-tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .cc-tab:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-contact .cc-panel {
  display: grid;
  gap: 18px;
  padding: var(--cc-pad);
  background: var(--steel);
  border: 1px solid var(--rail-line);
  border-top: 3px solid var(--cyan);
}

.page-contact .cc-panel--check {
  border-top-color: var(--magenta);
}

.page-contact .cc-panel--coop {
  border-top-color: var(--orange);
}

.page-contact .cc-panel[hidden] {
  display: none;
}

.page-contact .cc-panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .cc-pace {
  font-size: 13px;
  color: var(--mist);
}

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

.page-contact .cc-steps li {
  counter-increment: ccstep;
  position: relative;
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--white);
}

.page-contact .cc-steps li::before {
  content: counter(ccstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .cc-panel-foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--rail-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 03 合作 ---------- */
.page-contact .cc-coop-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-contact .cc-coop-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
  }
}

.page-contact .cc-coop-main p {
  margin: 0 0 12px;
  max-width: var(--read-max);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-contact .cc-coop-list li {
  position: relative;
  padding: 18px 20px 18px 24px;
  background: var(--steel);
  border: 1px solid var(--rail-line);
}

.page-contact .cc-coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 3px;
  height: 20px;
  background: var(--orange);
}

.page-contact .cc-coop-list h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .cc-coop-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 04 纠错之后 ---------- */
.page-contact .cc-after-track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
  display: grid;
  gap: 24px;
}

.page-contact .cc-after-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--rail-line);
}

.page-contact .cc-after-track li {
  position: relative;
}

.page-contact .cc-after-node {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-contact .cc-after-node--update {
  background: var(--magenta);
}

.page-contact .cc-after-node--config {
  background: var(--orange);
}

.page-contact .cc-after-track h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .cc-after-track p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .cc-after-foot {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--rail-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 05 地区与备案 ---------- */
.page-contact .cc-region-grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 720px) {
  .page-contact .cc-region-grid {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 30px;
  }
}

.page-contact .cc-region-rail {
  display: none;
}

@media (min-width: 720px) {
  .page-contact .cc-region-rail {
    display: block;
    writing-mode: vertical-rl;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.4em;
    color: var(--mist);
    opacity: 0.7;
    padding-top: 6px;
  }
}

.page-contact .cc-region-intro {
  margin: 0 0 22px;
  max-width: var(--read-max);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .cc-region-list {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--rail-line);
}

@media (min-width: 860px) {
  .page-contact .cc-region-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

.page-contact .cc-region-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rail-line);
}

.page-contact .cc-region-item dt {
  flex: 0 0 5.5em;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .cc-region-item dd {
  margin: 0;
  font-size: 15px;
  color: var(--white);
  word-break: break-all;
}

.page-contact .cc-region-item dd.num {
  font-family: var(--mono);
  letter-spacing: 0.02em;
}

.page-contact .cc-region-foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-contact .cc-big,
  .page-contact .cc-tab,
  .page-contact .cc-prep-foot a,
  .page-contact .cc-after-foot a,
  .page-contact .cc-region-foot a {
    transition: none;
  }
}