.page-contact {
  --contact-radius: var(--radius-card);
  --contact-gap: clamp(20px, 4vw, 48px);
  color: var(--ink-deep);
  background: var(--paper);
}

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

/* 面包屑 */
.page-contact .contact-crumbs {
  padding-top: clamp(18px, 3vw, 28px);
}
.page-contact .contact-crumbs .crumbs {
  margin: 0;
  font-size: 13px;
}

/* 首屏 */
.page-contact .contact-hero {
  padding-block: clamp(20px, 3vw, 32px) clamp(36px, 6vw, 72px);
}
.page-contact .contact-hero__grid {
  display: grid;
  gap: 18px;
}
.page-contact .contact-hero__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 12px;
}
.page-contact .contact-hero__body h1 {
  margin: 14px 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 20ch;
}
.page-contact .contact-hero__body .lead {
  max-width: 44rem;
  margin-bottom: clamp(22px, 3vw, 34px);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.75;
}
.page-contact .contact-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}
.page-contact .contact-toc li {
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .contact-toc a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 4px;
  color: var(--ink-deep);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.page-contact .contact-toc a:hover,
.page-contact .contact-toc a:focus-visible {
  color: var(--red);
  padding-left: 10px;
}
.page-contact .contact-toc .num {
  color: var(--red);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* 合作咨询 —— 深墨主题带 */
.page-contact .contact-coop {
  background: var(--ink);
  color: var(--paper);
}
.page-contact .contact-coop__head {
  max-width: 740px;
  margin-bottom: clamp(24px, 4vw, 46px);
}
.page-contact .contact-coop__head h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--paper);
}
.page-contact .contact-coop__head .lead {
  color: var(--silver-dim);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.75;
}
.page-contact .contact-coop__grid {
  display: grid;
  gap: 1px;
  background: var(--line-ink);
  border: 1px solid var(--line-ink);
  border-radius: var(--contact-radius);
  overflow: hidden;
}
.page-contact .coop-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink);
}
.page-contact .coop-item .num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mint);
}
.page-contact .coop-item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-contact .coop-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--silver-dim);
}
.page-contact .coop-item__link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mint);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-contact .coop-item__link:hover,
.page-contact .coop-item__link:focus-visible {
  color: var(--paper);
}

/* 订阅与版本反馈 */
.page-contact .contact-feedback {
  background: var(--paper);
}
.page-contact .contact-feedback__grid {
  display: grid;
  gap: var(--contact-gap);
}
.page-contact .contact-feedback__intro h2 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--ink);
}
.page-contact .contact-feedback__intro p {
  max-width: 38rem;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}
.page-contact .contact-feedback__intro .btn {
  margin-top: 10px;
}
.page-contact .entry-card {
  align-self: start;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--paper-raised);
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  box-shadow: 0 1px 0 rgba(20, 32, 46, 0.04), 0 14px 34px -26px rgba(11, 27, 43, 0.5);
}
.page-contact .entry-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .entry-card__head .num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.page-contact .entry-card__row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 14px;
}
.page-contact .entry-card__row:last-child {
  border-bottom: none;
}
.page-contact .entry-card__key {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-contact .entry-card__val {
  color: var(--ink-deep);
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.page-contact .entry-card__val.num {
  font-family: var(--font-mono);
  color: var(--red);
  letter-spacing: 0.04em;
}

/* 响应与流程 —— 深墨 + 浮岛联系卡 */
.page-contact .contact-process {
  background: var(--ink);
  color: var(--paper);
}
.page-contact .contact-process__grid {
  display: grid;
  gap: var(--contact-gap);
}
.page-contact .contact-process__body h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--paper);
  max-width: 22ch;
}
.page-contact .contact-process__body .lead {
  color: var(--silver-dim);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.75;
}
.page-contact .process-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-contact .process-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-top: 1px solid var(--line-ink);
}
.page-contact .process-step__num {
  padding-top: 3px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--mint);
}
.page-contact .process-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}
.page-contact .process-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--silver-dim);
}
.page-contact .process-note {
  margin: 20px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-dim);
}

.page-contact .contact-card {
  position: relative;
  align-self: start;
  overflow: hidden;
  padding: clamp(22px, 3vw, 32px);
  background: var(--paper-raised);
  color: var(--ink-deep);
  border: 1px solid var(--paper);
  border-radius: var(--contact-radius);
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.7);
}
.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0 36%, var(--gold) 36% 64%, var(--mint) 64% 100%);
}
.page-contact .contact-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}
.page-contact .contact-card__live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-contact .contact-card__live .signal-dot {
  flex: 0 0 auto;
  background: var(--teal);
}
.page-contact .contact-card .contact-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-contact .contact-card .contact-row {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}
.page-contact .contact-card .contact-row:last-child {
  border-bottom: none;
}
.page-contact .contact-card .contact-key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-contact .contact-card .contact-val {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-deep);
  overflow-wrap: anywhere;
}
.page-contact .contact-card .copy-btn {
  flex: 0 0 auto;
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate);
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-contact .contact-card .copy-btn:hover,
.page-contact .contact-card .copy-btn:focus-visible {
  color: var(--red);
  border-color: var(--red);
}
.page-contact .contact-card .copy-btn[data-copied] {
  color: var(--teal);
  border-color: var(--teal);
}
.page-contact .contact-card .contact-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
}

/* 联系信息 */
.page-contact .contact-info {
  background: var(--paper);
}
.page-contact .contact-info__grid {
  display: grid;
  gap: var(--contact-gap);
}
.page-contact .contact-info__body h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--ink);
}
.page-contact .contact-info__intro {
  max-width: 38rem;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}
.page-contact .channel-list {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}
.page-contact .channel {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-top: 1px solid var(--line-soft);
}
.page-contact .channel:last-child {
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .channel__no {
  padding-top: 3px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--red);
}
.page-contact .channel h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.page-contact .channel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
  overflow-wrap: anywhere;
}
.page-contact .contact-info__note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}
.page-contact .contact-info__visual {
  margin: 0;
  align-self: start;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  background: var(--paper-raised);
}
.page-contact .contact-info__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}
.page-contact .contact-info__visual figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* 合作方常见问题 */
.page-contact .contact-faq {
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}
.page-contact .contact-faq__head {
  max-width: 720px;
  margin-bottom: clamp(20px, 3vw, 32px);
}
.page-contact .contact-faq__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--ink);
}
.page-contact .contact-faq__list {
  border-top: 1px solid var(--line-soft);
}
.page-contact .faq-item {
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 34px 16px 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.page-contact .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--red);
  transition: transform var(--dur) var(--ease);
}
.page-contact .faq-item[open] summary::after {
  content: "−";
}
.page-contact .faq-item p {
  max-width: 700px;
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--slate);
}
.page-contact .contact-faq__more {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}
.page-contact .contact-faq__more a {
  color: var(--ink-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  transition: color var(--dur) var(--ease);
}
.page-contact .contact-faq__more a:hover,
.page-contact .contact-faq__more a:focus-visible {
  color: var(--red);
}

/* 城市线条收束带 */
.page-contact .city-band {
  margin: 0;
  background: var(--ink);
}
.page-contact .city-band img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}
.page-contact .city-band figcaption {
  padding: 14px var(--gutter);
  border-top: 1px solid var(--line-ink);
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--silver-dim);
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-contact .contact-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .contact-feedback__grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(280px, 0.92fr);
    align-items: start;
  }
  .page-contact .contact-process__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    align-items: start;
  }
  .page-contact .contact-info__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.88fr);
    align-items: start;
  }
  .page-contact .contact-toc {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 4vw, 40px);
  }
}

/* 桌面及以上：首屏恢复画册式旁栏 */
@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 48px);
  }
  .page-contact .contact-hero__meta {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 12px;
    border-bottom: none;
    border-right: 1px solid var(--line-soft);
    padding: 4px 20px 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-toc a,
  .page-contact .coop-item__link,
  .page-contact .contact-faq__more a,
  .page-contact .contact-card .copy-btn,
  .page-contact .faq-item summary::after {
    transition: none;
  }
}
<<<END>>>