.page-contact {
  --contact-space: clamp(56px, 9vw, 108px);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .section-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--mist);
  text-wrap: balance;
}

.page-contact .lede {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--sage);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.78;
}

.page-contact .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* 面包屑 */
.page-contact .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .breadcrumb li {
  display: flex;
  align-items: center;
  color: var(--sage);
}
.page-contact .breadcrumb a {
  color: var(--sage);
  text-decoration: none;
}
.page-contact .breadcrumb a:hover {
  color: var(--cyan);
}
.page-contact .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 34px) var(--contact-space);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(57, 242, 208, 0.13), transparent 62%),
    linear-gradient(180deg, var(--forest), var(--ink) 82%);
  border-bottom: 1px solid var(--hair);
}
.page-contact .contact-hero__grid {
  display: grid;
  gap: 32px;
}
.page-contact .contact-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 70px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--mist);
  text-wrap: balance;
}
.page-contact .contact-hero__lede {
  max-width: 48ch;
  color: var(--sage);
}
.page-contact .contact-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .contact-quick__item {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--hair-strong);
  background: rgba(15, 58, 49, 0.55);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.page-contact .contact-quick__item .num {
  font-size: 15px;
  color: var(--cyan);
}
.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.page-contact .contact-hero__media {
  --media-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair-strong);
  overflow: hidden;
  background: var(--panel);
}
.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 通用区块头 */
.page-contact .contact-head {
  max-width: 720px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

/* 合作方向 */
.page-contact .contact-tracks {
  padding-block: var(--contact-space);
  background: var(--ink);
}
.page-contact .track-list {
  display: grid;
  gap: 14px;
}
.page-contact .track {
  border-radius: var(--radius-md);
  border: 1px solid var(--hair);
  background: linear-gradient(160deg, var(--panel), rgba(8, 37, 31, 0.7));
  overflow: hidden;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}
.page-contact .track[open] {
  border-color: rgba(57, 242, 208, 0.4);
  background: linear-gradient(160deg, var(--panel-soft), var(--forest));
}
.page-contact .track__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "index name chevron"
    "index who chevron";
  align-items: center;
  gap: 2px 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.page-contact .track__summary::-webkit-details-marker {
  display: none;
}
.page-contact .track__index {
  grid-area: index;
  font-size: 20px;
  color: var(--cyan);
  opacity: 0.85;
}
.page-contact .track__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}
.page-contact .track__who {
  grid-area: who;
  font-size: 12.5px;
  color: var(--sage);
  overflow-wrap: anywhere;
}
.page-contact .track__chevron {
  grid-area: chevron;
  width: 11px;
  height: 11px;
  margin-right: 5px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}
.page-contact .track[open] .track__chevron {
  transform: rotate(225deg);
}
.page-contact .track__body {
  padding: 0 20px 22px;
  max-width: 76ch;
}
.page-contact .track__body > p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}
.page-contact .track__list {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}
.page-contact .track__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.62;
  color: var(--sage);
}
.page-contact .track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}
.page-contact .track__link {
  display: inline-block;
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px dashed rgba(57, 242, 208, 0.5);
  padding-bottom: 2px;
}
.page-contact .track__link:hover {
  color: var(--amber);
  border-bottom-color: rgba(255, 157, 69, 0.6);
}

/* 联系渠道 */
.page-contact .contact-channels {
  padding-block: var(--contact-space);
  background: linear-gradient(180deg, var(--forest), var(--ink));
  border-block: 1px solid var(--hair);
}
.page-contact .channel-grid {
  display: grid;
  gap: 30px;
}
.page-contact .channel-block {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--hair);
}
.page-contact .channel-block__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sage);
}
.page-contact .channel-block__value {
  font-family: var(--font-mono);
  font-size: clamp(18px, 3.4vw, 30px);
  letter-spacing: -0.01em;
  color: var(--cyan);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color 0.2s var(--ease);
}
.page-contact .channel-block__value:hover {
  color: var(--amber);
}
.page-contact .channel-note {
  margin-top: 24px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--amber);
  background: rgba(255, 157, 69, 0.09);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.72;
}
.page-contact .mail-template {
  align-self: start;
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair-strong);
  background: linear-gradient(165deg, var(--panel), #0a2a23);
  box-shadow: var(--shadow-island);
}
.page-contact .mail-template__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-contact .mail-template__code {
  margin: 0;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hair);
  background: rgba(7, 17, 15, 0.6);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--mist);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}
.page-contact .mail-template__send {
  display: inline-block;
  margin-top: 16px;
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px dashed rgba(57, 242, 208, 0.5);
  padding-bottom: 2px;
}
.page-contact .mail-template__send:hover {
  color: var(--amber);
}

/* 协作节奏 */
.page-contact .contact-flow {
  padding-block: var(--contact-space);
  background: var(--ink);
}
.page-contact .flow-steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}
.page-contact .flow-step {
  position: relative;
  padding: 24px 18px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(15, 58, 49, 0.72), rgba(8, 37, 31, 0.42));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(57, 242, 208, 0));
}
.page-contact .flow-step:hover,
.page-contact .flow-step:focus-within {
  border-color: rgba(57, 242, 208, 0.35);
  transform: translateY(-2px);
}
.page-contact .flow-step__index {
  display: block;
  margin-bottom: 8px;
  font-size: 30px;
  line-height: 1;
  color: rgba(57, 242, 208, 0.42);
}
.page-contact .flow-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}
.page-contact .flow-step p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
}
.page-contact .flow-step__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--amber);
  opacity: 0.86;
  transition: opacity 0.2s var(--ease);
}
.page-contact .flow-step:hover .flow-step__meta,
.page-contact .flow-step:focus-within .flow-step__meta {
  opacity: 1;
}

/* 到访与邮寄 */
.page-contact .contact-visit {
  position: relative;
  padding-block: var(--contact-space);
  background:
    radial-gradient(90% 80% at 8% 100%, rgba(33, 27, 77, 0.7), transparent 66%),
    linear-gradient(180deg, var(--forest), #061713);
  border-block: 1px solid var(--hair);
  overflow: hidden;
}
.page-contact .visit-map {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: auto;
  max-height: 240px;
  pointer-events: none;
  opacity: 0.75;
}
.page-contact .contact-visit .wrap {
  position: relative;
  z-index: 1;
}
.page-contact .visit-grid {
  display: grid;
  gap: 30px;
}
.page-contact .visit-address {
  margin-top: 26px;
  padding: 20px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--hair-strong);
  background: rgba(7, 17, 15, 0.6);
}
.page-contact .visit-address__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-contact .visit-address__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 19px);
  line-height: 1.62;
  letter-spacing: 0.01em;
  color: var(--mist);
}
.page-contact .visit-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--sage);
}
.page-contact .visit-icp {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(143, 184, 171, 0.75);
}
.page-contact .visit-media {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair-strong);
  overflow: hidden;
}
.page-contact .visit-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 常见合作问题 */
.page-contact .contact-faq {
  padding-block: var(--contact-space);
  background: var(--ink);
}
.page-contact .faq-list {
  display: grid;
  gap: 12px;
  max-width: 880px;
}
.page-contact .faq {
  padding: 0 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--hair);
  background: rgba(15, 58, 49, 0.4);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-contact .faq[open] {
  border-color: rgba(57, 242, 208, 0.3);
  background: rgba(15, 58, 49, 0.78);
}
.page-contact .faq summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist);
}
.page-contact .faq summary::-webkit-details-marker {
  display: none;
}
.page-contact .faq summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}
.page-contact .faq[open] summary::after {
  content: "−";
}
.page-contact .faq p {
  margin: 0;
  padding: 0 0 20px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sage);
}

/* 相关入口 */
.page-contact .contact-links {
  padding-block: clamp(28px, 4vw, 44px) var(--contact-space);
  background: var(--ink);
  border-top: 1px solid var(--hair);
}
.page-contact .link-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 响应式 */
@media (min-width: 760px) {
  .page-contact .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .track__summary {
    padding: 20px 24px;
  }
  .page-contact .track__body {
    padding: 0 24px 24px;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 52px;
  }
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 48px;
  }
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 52px;
  }
}

@media (min-width: 1080px) {
  .page-contact .flow-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
  .page-contact .flow-step {
    padding: 26px 20px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .track,
  .page-contact .track__chevron,
  .page-contact .channel-block__value,
  .page-contact .flow-step,
  .page-contact .flow-step__meta,
  .page-contact .faq {
    transition: none;
  }
  .page-contact .flow-step:hover,
  .page-contact .flow-step:focus-within {
    transform: none;
  }
}
<<<END>>>