.page-contact {
  --ct-shadow: 0 14px 32px rgba(4, 28, 51, .12);
  background: var(--c-white);
  color: var(--c-deep);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏与左右分置 ---------- */
.page-contact .c-hero {
  background: linear-gradient(180deg, var(--c-paper) 0%, var(--c-white) 68%);
  padding: 18px 0 52px;
}

.page-contact .c-crumb {
  margin-bottom: 28px;
}

.page-contact .c-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .c-h1 {
  margin: 12px 0 16px;
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--c-deep);
}

.page-contact .c-lead {
  margin: 0;
  max-width: 42ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-navy);
}

/* 合作方向卡 */
.page-contact .c-dirs {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .dir-card {
  position: relative;
  padding: 18px 20px 20px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-window);
  clip-path: var(--cut-sm);
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-contact .dir-card:hover,
.page-contact .dir-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--c-cyan);
  box-shadow: var(--ct-shadow);
}

.page-contact .dir-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-contact .dir-card__num {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-cyan-dark);
}

.page-contact .dir-card__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-deep);
}

.page-contact .dir-card__fit {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-steel);
  transition: color var(--dur) var(--ease);
}

.page-contact .dir-card:hover .dir-card__fit {
  color: var(--c-window);
}

.page-contact .dir-card__rows {
  margin: 0;
  display: grid;
  gap: 9px;
}

.page-contact .dir-card__rows > div {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
}

.page-contact .dir-card__rows dt {
  padding-top: 2px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-steel);
}

.page-contact .dir-card__rows dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.62;
  color: var(--c-navy);
}

/* 右侧流程与客服面板 */
.page-contact .c-split__side {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  background: linear-gradient(160deg, var(--c-deep) 0%, var(--c-navy) 100%);
  clip-path: var(--cut-md);
  color: var(--c-paper);
}

.page-contact .c-split__side::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 34px 34px;
  pointer-events: none;
}

.page-contact .c-split__side > * {
  position: relative;
  z-index: 1;
}

.page-contact .c-flow__title {
  margin: 10px 0 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-contact .c-steps {
  position: relative;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .c-steps::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 14px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), rgba(23, 224, 200, .1));
}

.page-contact .c-step {
  position: relative;
  padding-left: 48px;
}

.page-contact .c-step + .c-step {
  margin-top: 8px;
}

.page-contact .c-step__node {
  position: absolute;
  left: 0;
  top: 9px;
  width: 34px;
  height: 34px;
  line-height: 34px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--c-window);
  color: var(--c-cyan);
  clip-path: var(--cut-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .c-step__d[open] .c-step__node {
  background: var(--c-cyan);
  color: var(--c-deep);
}

.page-contact .c-step__sum {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
  color: var(--c-white);
}

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

.page-contact .c-step__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-contact .c-step__body {
  padding: 0 0 12px;
}

.page-contact .c-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(242, 245, 248, .78);
}

.page-contact .c-quick {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(23, 224, 200, .22);
}

.page-contact .c-quick__list {
  margin: 12px 0 0;
  display: grid;
  gap: 10px;
}

.page-contact .c-quick__row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-contact .c-quick__row dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-steel);
}

.page-contact .c-quick__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-white);
  word-break: break-all;
}

/* ---------- 流程示意带 ---------- */
.page-contact .c-flowband {
  background: var(--c-paper);
}

.page-contact .c-flowband__head {
  margin-bottom: 22px;
}

.page-contact .c-flowband__head .section-title {
  margin: 8px 0 0;
}

.page-contact .c-flowband__fig {
  margin: 0;
}

/* ---------- 第一封邮件 ---------- */
.page-contact .c-brief {
  background: var(--c-white);
}

.page-contact .c-brief__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 28px 22px 30px;
  background: linear-gradient(150deg, var(--c-navy) 0%, var(--c-deep) 100%);
  clip-path: var(--cut-md);
}

.page-contact .c-brief__title {
  margin: 10px 0 12px;
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--c-white);
}

.page-contact .c-brief__lead {
  margin: 0;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-steel);
}

.page-contact .c-brief__form {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .c-brief__field {
  display: grid;
  gap: 8px;
}

.page-contact .c-brief__field dt {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-cyan);
}

.page-contact .c-brief__field dd {
  margin: 0;
  padding: 13px 15px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-deep);
  background: var(--c-paper);
  border: 1px solid transparent;
  clip-path: var(--cut-sm);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .c-brief__field:hover dd {
  border-color: var(--c-cyan);
  background: var(--c-white);
}

/* ---------- 客服通道 ---------- */
.page-contact .c-support {
  background: var(--c-white);
}

.page-contact .c-support__head .section-title {
  margin: 8px 0 0;
}

.page-contact .c-channels {
  margin-top: 28px;
  border-top: 1px solid var(--c-line);
}

.page-contact .c-channel {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .c-channel__label {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-steel);
}

.page-contact .c-channel__value {
  font-size: clamp(20px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--c-deep);
  word-break: break-all;
}

.page-contact .c-support__cols {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-contact .c-support__note h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-deep);
}

.page-contact .c-support__note p {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-navy);
}

.page-contact .c-support__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .c-support__links li {
  border-top: 1px solid var(--c-line);
}

.page-contact .c-support__links li:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-contact .c-support__links a {
  display: block;
  padding: 14px 4px 14px 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--c-window);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background var(--dur) var(--ease);
}

.page-contact .c-support__links a:hover,
.page-contact .c-support__links a:focus-visible {
  color: var(--c-deep);
  border-left-color: var(--c-cyan);
  background: var(--c-paper);
}

/* ---------- 地区信息 ---------- */
.page-contact .c-region {
  background: var(--c-paper);
}

.page-contact .c-region__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .c-region__map {
  clip-path: var(--cut-md);
  background: var(--c-deep);
  line-height: 0;
}

.page-contact .c-region__map img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .c-region__lead {
  margin: 14px 0 22px;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-navy);
}

.page-contact .c-facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .c-fact {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .c-fact dt {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-steel);
}

.page-contact .c-fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-deep);
  word-break: break-all;
}

/* ---------- 收尾 ---------- */
.page-contact .c-next {
  background: var(--c-deep);
}

.page-contact .c-next__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: center;
}

.page-contact .c-next__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--c-white);
}

.page-contact .c-next__text {
  margin: 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-steel);
}

.page-contact .c-next__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .c-channel {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: center;
    gap: 24px;
    padding: 26px 0;
  }

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

  .page-contact .c-fact {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 960px) {
  .page-contact .c-hero {
    padding: 24px 0 72px;
  }

  .page-contact .c-split {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 46px;
    align-items: start;
  }

  .page-contact .c-split__side {
    padding: 32px 30px 30px;
  }

  .page-contact .c-flowband__head {
    margin-bottom: 28px;
  }

  .page-contact .c-brief__panel {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 40px;
    align-items: center;
    padding: 40px 38px;
  }

  .page-contact .c-support__cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
  }

  .page-contact .c-region__split {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 44px;
    align-items: center;
  }

  .page-contact .c-next__row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
  }
}

@media (min-width: 1200px) {
  .page-contact .c-hero {
    padding: 30px 0 88px;
  }

  .page-contact .c-dirs {
    gap: 16px;
  }

  .page-contact .dir-card {
    padding: 22px 24px 24px;
  }
}