.page-contact {
  --contact-gap: clamp(28px, 4vw, 56px);
  --contact-rule: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-contact .crumb ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .crumb li + li::before {
  content: "／";
  margin-right: 8px;
  color: var(--line);
}

.page-contact .crumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .crumb a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-contact .contact-intro {
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(26px, 4vw, 44px);
  border-bottom: var(--contact-rule);
}

.page-contact .contact-intro__title {
  margin: 20px 0 0;
  font-family: var(--serif);
  font-size: clamp(32px, 5.2vw, 58px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-intro__lead {
  max-width: 720px;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  padding-top: clamp(32px, 4.5vw, 60px);
}

.page-contact .contact-main {
  display: grid;
  gap: clamp(40px, 6vw, 76px);
  min-width: 0;
}

.page-contact .contact-side {
  display: grid;
  gap: 20px;
  min-width: 0;
}

/* 章节标题 */
.page-contact .contact-block__head {
  padding-top: 20px;
  border-top: var(--contact-rule);
}

.page-contact .contact-block__num {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-contact .contact-block__title {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-block__sub {
  max-width: 62ch;
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-block__body {
  max-width: 72ch;
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* 合作类型 */
.page-contact .contact-types {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-type {
  border: var(--contact-rule);
  border-radius: 2px;
  background: var(--panel);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .contact-type[open] {
  border-color: var(--amber);
}

.page-contact .contact-type__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

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

.page-contact .contact-type__head:hover {
  background: rgba(229, 161, 60, 0.06);
}

.page-contact .contact-type__num {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--amber);
}

.page-contact .contact-type__title {
  font-family: var(--cond);
  font-size: 18px;
  letter-spacing: 0.07em;
  color: var(--paper);
}

.page-contact .contact-type__for {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .contact-type__body {
  display: grid;
  gap: 14px;
  padding: 0 18px 20px;
}

.page-contact .contact-type__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-contact .prep li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--amber);
  transform: rotate(45deg);
}

.page-contact .contact-type__link {
  justify-self: start;
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-deep);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-type__link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 五步流程 */
.page-contact .contact-flow {
  position: relative;
  display: grid;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-flow::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 28px;
  width: 1px;
  background: var(--line);
}

.page-contact .contact-step {
  position: relative;
  padding: 0 0 34px 40px;
}

.page-contact .contact-step__dot {
  position: absolute;
  left: 0;
  top: 4px;
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink);
}

.page-contact .contact-step__dot::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber);
}

.page-contact .contact-step__num {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .contact-step__title {
  margin: 4px 0 8px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-step__desc {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-step__meta {
  display: grid;
  gap: 10px;
  margin: 0;
}

.page-contact .contact-step__meta > div {
  padding-left: 12px;
  border-left: 1px solid var(--line);
}

.page-contact .contact-step__meta dt {
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-contact .contact-step__meta dd {
  margin: 4px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
}

/* 图片 */
.page-contact .figure {
  margin: 28px 0 0;
}

.page-contact .figure__frame {
  overflow: hidden;
  border: var(--contact-rule);
  border-radius: 2px;
  background: var(--panel);
}

.page-contact .figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .contact-flow-figure .figure__frame {
  aspect-ratio: 3 / 2;
}

.page-contact .contact-side-figure {
  margin: 0;
}

.page-contact .contact-side-figure .figure__frame {
  aspect-ratio: 4 / 3;
}

.page-contact .figure__caption {
  margin-top: 8px;
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

/* 受理时间 */
.page-contact .contact-hours-list {
  display: grid;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hours-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-top: var(--contact-rule);
}

.page-contact .contact-hours-list li:last-child {
  border-bottom: var(--contact-rule);
}

.page-contact .contact-hours-list__k {
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: 0.09em;
  color: var(--muted);
}

.page-contact .contact-hours-list__v {
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

/* 联系卡片 */
.page-contact .contact-card {
  padding: 22px 20px;
  border: var(--contact-rule);
  border-radius: 2px;
  background: var(--panel);
  box-shadow: 0 20px 44px -32px rgba(0, 0, 0, 0.95);
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .contact-card__title {
  margin: 6px 0 18px;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-card__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: center;
  padding: 16px 0;
  border-top: var(--contact-rule);
}

.page-contact .contact-card__item:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.page-contact .contact-card__key {
  grid-column: 1 / -1;
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .contact-card__value {
  min-width: 0;
  font-family: var(--mono);
  font-size: clamp(13px, 3.3vw, 15.5px);
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-card__value--accent {
  font-size: clamp(16px, 4.2vw, 19px);
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .contact-card__hint {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .copy-btn {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover {
  color: var(--ink);
  background: var(--amber);
  border-color: var(--amber);
}

.page-contact .copy-btn.is-copied {
  color: var(--ink);
  background: var(--celadon);
  border-color: var(--celadon);
}

/* 底部链接条 */
.page-contact .contact-tail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
  margin-top: clamp(44px, 6vw, 76px);
  padding-top: 22px;
  border-top: var(--contact-rule);
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-contact .contact-tail a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-tail a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-contact .contact-tail span {
  color: var(--line);
}

@media (min-width: 640px) {
  .page-contact .contact-type__head {
    grid-template-columns: auto auto minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
    padding: 18px 20px;
  }

  .page-contact .contact-type__for {
    grid-column: auto;
    text-align: right;
  }

  .page-contact .contact-type__body {
    padding: 0 20px 22px;
  }

  .page-contact .contact-step__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .contact-hours-list li {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 396px);
    align-items: start;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-contact .contact-side {
    position: sticky;
    top: 88px;
  }

  .page-contact .contact-step {
    padding-bottom: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-type__head,
  .page-contact .contact-type,
  .page-contact .copy-btn,
  .page-contact .crumb a,
  .page-contact .contact-type__link,
  .page-contact .contact-tail a {
    transition: none;
  }
}
<<<END>>>