.page-contact {
  --pc-section: clamp(56px, 8vw, 104px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.78;
  overflow-x: hidden;
}

.page-contact a:not(.btn):not(.help-card) {
  color: var(--copper-soft);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-contact a:not(.btn):not(.help-card):hover {
  color: var(--copper);
}

.page-contact img {
  display: block;
  max-width: 100%;
}

.page-contact .section {
  padding-block: var(--pc-section);
}

.page-contact h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.25;
  margin: 8px 0 0;
  color: var(--paper);
}

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

.page-contact .section-head {
  display: grid;
  gap: 14px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .section-head__note {
  margin: 0;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--header-h) + 36px) 0 clamp(48px, 7vw, 88px);
  background:
    radial-gradient(90% 70% at 88% 0%, rgba(201, 148, 74, .18), transparent 62%),
    radial-gradient(70% 60% at 0% 100%, rgba(63, 111, 143, .16), transparent 60%),
    linear-gradient(155deg, var(--ink-deep) 0%, var(--ink) 48%, var(--panel) 100%);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: auto;
  right: -14%;
  bottom: -42%;
  left: auto;
  width: 52vw;
  height: 52vw;
  max-width: 620px;
  max-height: 620px;
  border: 1px solid var(--line);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .contact-hero__shell {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-contact .breadcrumb {
  margin-bottom: 24px;
}

.page-contact h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(32px, 5.6vw, 58px);
  line-height: 1.12;
  letter-spacing: .01em;
  margin: 12px 0 0;
  color: var(--paper);
}

.page-contact .contact-hero__intro {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--paper-dim);
}

.page-contact .contact-hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .contact-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-contact .contact-hero__aside {
  display: grid;
  gap: 0;
}

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

.page-contact .media-frame {
  overflow: hidden;
}

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

.page-contact .contact-hero__figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--rock);
}

.page-contact .contact-card {
  position: relative;
  z-index: 2;
  margin: -34px 14px 0;
  padding: 20px;
  background: linear-gradient(180deg, rgba(22, 50, 75, .97), rgba(18, 40, 61, .99));
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: 0 22px 50px rgba(5, 12, 20, .42);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-contact .contact-card:hover {
  border-color: var(--copper);
  box-shadow: 0 26px 58px rgba(5, 12, 20, .55);
}

.page-contact .contact-card__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-contact .contact-card__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-card__key {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--rock);
}

.page-contact .contact-card__value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .contact-card__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-contact .contact-card .copy-btn,
.page-contact .channel-card .copy-btn {
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 12px;
  padding: 6px 13px;
  border-radius: var(--r-pill);
  background: transparent;
  transition: border-color .25s var(--ease), color .25s var(--ease), background-color .25s var(--ease);
}

.page-contact .contact-card .copy-btn {
  margin-left: auto;
  color: var(--copper-soft);
  border: 1px solid var(--line);
}

.page-contact .contact-card .copy-btn:hover {
  border-color: var(--copper);
  color: var(--copper);
}

.page-contact .contact-card .copy-btn[data-copied="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--paper);
}

/* ---------- 合作类型 ---------- */
.page-contact .contact-types {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
}

.page-contact .type-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .type-item {
  display: grid;
  gap: 10px 26px;
  padding: clamp(22px, 3vw, 36px) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color .3s var(--ease);
}

.page-contact .type-item:hover {
  border-bottom-color: var(--copper);
}

.page-contact .type-item__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--copper);
  transition: color .3s var(--ease);
}

.page-contact .type-item:hover .type-item__num {
  color: var(--copper-soft);
}

.page-contact .type-item__body h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .type-item__body p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  color: var(--paper-dim);
}

.page-contact .type-item__points {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
}

.page-contact .type-item__points li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  color: var(--rock);
}

.page-contact .type-item__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--copper);
}

/* ---------- 流程 ---------- */
.page-contact .contact-process {
  background: linear-gradient(180deg, rgba(18, 40, 61, .62) 0%, rgba(11, 27, 43, .1) 100%);
}

.page-contact .process-track {
  list-style: none;
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
}

.page-contact .process-step {
  position: relative;
  padding-top: 50px;
}

.page-contact .process-step::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(201, 148, 74, .04));
}

.page-contact .process-step__num {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink);
  background: var(--copper);
  border-radius: 50%;
}

.page-contact .process-step summary {
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 10px;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--paper);
  transition: color .25s var(--ease);
}

.page-contact .process-step summary::-webkit-details-marker {
  display: none;
}

.page-contact .process-step summary:hover {
  color: var(--copper-soft);
}

.page-contact .process-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--copper);
}

.page-contact .process-step details[open] summary::after {
  content: "−";
}

.page-contact .process-step details > p {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--paper-dim);
}

.page-contact .process-foot {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(32px, 5vw, 52px);
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-contact .process-foot__figure {
  margin: 0;
}

.page-contact .process-foot__text h3 {
  margin: 0 0 14px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .process-foot__text ul {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-contact .process-foot__text li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--paper-dim);
}

.page-contact .process-foot__text li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 9px;
  height: 9px;
  border: 1px solid var(--copper);
  border-radius: 50%;
}

.page-contact .contact-back {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-channels {
  background: var(--ink-deep);
}

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

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--paper);
  border: 1px solid rgba(201, 148, 74, .18);
  border-radius: var(--r-md);
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .channel-card:hover {
  border-color: var(--copper);
  background: #F7F1E6;
}

.page-contact .channel-card .capsule {
  font-size: 11px;
}

.page-contact .channel-card__tag {
  border-color: rgba(11, 27, 43, .2);
  color: var(--rock);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.7vw, 16px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .channel-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: #3B4A57;
}

.page-contact .channel-card .copy-btn {
  margin-top: auto;
  color: var(--ink);
  border: 1px solid rgba(11, 27, 43, .24);
}

.page-contact .channel-card .copy-btn:hover {
  border-color: var(--copper);
  color: var(--copper);
}

.page-contact .channel-card .copy-btn[data-copied="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--paper);
}

.page-contact .channel-foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 13px;
}

/* ---------- 自助通道 ---------- */
.page-contact .contact-help {
  background: linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
}

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

.page-contact .help-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  color: var(--paper);
  text-decoration: none;
  transition: border-color .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .help-card:hover {
  border-color: var(--copper);
  background: var(--panel-soft);
}

.page-contact .help-card__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--copper);
}

.page-contact .help-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .help-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--rock);
}

.page-contact .help-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--copper-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-contact .process-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 30px;
  }
}

@media (min-width: 800px) {
  .page-contact .section-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: end;
  }
}

@media (min-width: 820px) {
  .page-contact .type-item {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-contact .process-foot {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__shell {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

  .page-contact .contact-card {
    margin: -40px 0 0 26px;
  }
}

@media (min-width: 1020px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .process-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (max-width: 560px) {
  .page-contact .contact-card {
    margin: -24px 8px 0;
    padding: 16px;
  }

  .page-contact .contact-hero__jump .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-contact .process-step details > p {
    font-size: 13px;
  }
}