.page-contact {
  background: var(--ink-900);
  color: var(--white);
}

.page-contact .crumb-sep {
  margin: 0 .45em;
  color: var(--line);
}

.page-contact .breadcrumb {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-contact .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover {
  color: var(--lime);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(26px, 4vw, 46px) clamp(36px, 5vw, 70px);
  border-bottom: 1px solid var(--line-faint);
  background:
    radial-gradient(circle at 88% 6%, rgba(53, 242, 230, .13), transparent 48%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-contact .contact-hero__visual {
  margin: 0;
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: center;
    gap: clamp(36px, 5vw, 76px);
  }
}

/* ---------- 分屏：联系方式 / 分流 ---------- */
.page-contact .contact-split {
  padding-block: clamp(40px, 6vw, 86px);
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .split {
  display: grid;
  gap: clamp(34px, 5vw, 62px);
}

.page-contact .split__secondary {
  scroll-margin-top: 96px;
}

.page-contact .split__title {
  margin: 10px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .split__note {
  margin: 14px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 1024px) {
  .page-contact .split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(44px, 5vw, 84px);
  }

  .page-contact .split__secondary {
    border-left: 1px solid var(--line-faint);
    padding-left: clamp(30px, 4vw, 58px);
  }
}

/* 联系方式列表 */
.page-contact .channel-list {
  list-style: none;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
}

.page-contact .channel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 14px;
  row-gap: 10px;
  align-items: center;
  padding-block: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line-soft);
}

.page-contact .channel:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .channel__label {
  grid-column: 1 / -1;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .channel__value {
  grid-column: 1;
  margin: 0;
  font-family: var(--f-sans);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.4;
  text-decoration: none;
  color: var(--white);
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease);
}

.page-contact .channel__value--email {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: clamp(16px, 1.9vw, 22px);
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-contact .channel__value--phone {
  font-family: var(--f-mono);
  font-weight: 600;
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .channel__value--hours {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: clamp(20px, 2.6vw, 28px);
  color: var(--lime);
}

.page-contact a.channel__value:hover,
.page-contact a.channel__value:focus-visible {
  color: var(--lime);
}

.page-contact .channel__hint {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .channel .copy-btn {
  grid-column: 2;
  align-self: center;
  padding: 7px 15px;
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--cyan);
  border-radius: var(--pill);
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .channel .copy-btn:hover,
.page-contact .channel .copy-btn:focus-visible,
.page-contact .channel .copy-btn.is-copied {
  color: var(--ink-900);
  background: var(--lime);
  border-color: var(--lime);
}

/* 分流索引 */
.page-contact .route-list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-contact .route {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  padding-block: 18px;
  border-top: 1px solid var(--line-faint);
}

.page-contact .route:last-child {
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .route__no {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-contact .route__title {
  margin: 0 0 6px;
  font-family: var(--f-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .route__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .route__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-contact .route-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
  border: 1px solid var(--line-soft);
}

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

/* ---------- 响应流程 ---------- */
.page-contact .contact-flow {
  padding-block: clamp(40px, 6vw, 86px);
  border-bottom: 1px solid var(--line-faint);
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-contact .flow__head {
  max-width: 64ch;
}

.page-contact .flow__head h2 {
  margin: 10px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .flow__head p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .flow-track {
  list-style: none;
  margin: clamp(28px, 4vw, 50px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .flow-node {
  position: relative;
  padding: 26px 22px 24px 0;
  border-top: 1px solid var(--line);
}

.page-contact .flow-node::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 242, 230, .14);
}

.page-contact .flow-node__no {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-contact .flow-node h3 {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .flow-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-contact .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
}

/* ---------- 邮件标题建议 ---------- */
.page-contact .contact-subject {
  padding-block: clamp(40px, 6vw, 86px);
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .subject-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .subject-copy h2 {
  margin: 10px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .subject-copy p {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .subject-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .subject-item {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
  background: var(--ink-800);
  border-left: 2px solid var(--orange);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .subject-item + .subject-item {
  margin-top: 10px;
}

.page-contact .subject-item:hover {
  background: var(--ink-700);
  border-left-color: var(--cyan);
}

.page-contact .subject-item__tag {
  justify-self: start;
}

.page-contact .subject-item__text {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .subject-foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .subject-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .subject-foot a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

@media (min-width: 560px) {
  .page-contact .subject-item {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    column-gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .subject-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

/* ---------- 合作与投稿 ---------- */
.page-contact .contact-collab {
  padding-block: clamp(40px, 6vw, 86px);
  border-bottom: 1px solid var(--line-faint);
  background: var(--ink-800);
}

.page-contact .collab-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .collab-main h2 {
  margin: 10px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .collab-main p {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .collab-main .btn {
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .collab-card {
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-900);
  border-top: 2px solid var(--cyan);
  border-right: 1px solid var(--line-faint);
  border-bottom: 1px solid var(--line-faint);
  border-left: 1px solid var(--line-faint);
}

.page-contact .collab-card + .collab-card {
  margin-top: 16px;
  border-top-color: var(--orange);
}

.page-contact .collab-card h3 {
  margin: 0 0 10px;
  font-family: var(--f-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .collab-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .collab-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border-top: 1px dashed var(--line-faint);
}

.page-contact .collab-points li {
  position: relative;
  padding: 9px 0 9px 18px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
  border-bottom: 1px solid var(--line-faint);
}

.page-contact .collab-points li::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

@media (min-width: 900px) {
  .page-contact .collab-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

/* ---------- 到访与地址 ---------- */
.page-contact .contact-address {
  padding-block: clamp(40px, 6vw, 86px);
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-contact .address-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .address-copy h2 {
  margin: 10px 0 0;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .address-copy p {
  margin: 16px 0 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .address-full {
  font-family: var(--f-mono);
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.7;
  color: var(--lime) !important;
  padding: 14px 16px;
  border-left: 2px solid var(--cyan);
  background: rgba(18, 58, 90, .45);
  overflow-wrap: anywhere;
}

.page-contact .address-copy .copy-btn {
  margin-top: 18px;
  padding: 8px 18px;
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--cyan);
  border-radius: var(--pill);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .address-copy .copy-btn:hover,
.page-contact .address-copy .copy-btn:focus-visible,
.page-contact .address-copy .copy-btn.is-copied {
  color: var(--ink-900);
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .address-map {
  padding: 10px;
  border: 1px solid var(--line-soft);
  background: var(--ink-900);
}

.page-contact .address-map svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-contact .address-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: center;
  }
}

/* ---------- 底部服务带 ---------- */
.page-contact .contact-band {
  padding-block: clamp(28px, 4vw, 46px);
  background: var(--ink-800);
  border-top: 1px solid var(--line-faint);
}

.page-contact .band-row {
  display: grid;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
}

.page-contact .band-item {
  display: grid;
  gap: 5px;
  padding: 18px 20px;
  background: var(--ink-800);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease);
}

.page-contact .band-item:hover,
.page-contact .band-item:focus-visible {
  background: var(--ink-700);
}

.page-contact .band-item__k {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .band-item__t {
  font-family: var(--f-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .band-item__d {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

@media (min-width: 700px) {
  .page-contact .band-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel__value,
  .page-contact .subject-item,
  .page-contact .band-item,
  .page-contact .channel .copy-btn,
  .page-contact .address-copy .copy-btn {
    transition: none;
  }
}