.page-contact {
  display: block;
  padding-bottom: 4rem;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: 1.5rem 0 0;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-mist);
}

.page-contact .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  color: var(--line-hair);
  font-family: var(--font-data);
}

.page-contact .breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease-out), border-color 200ms var(--ease-out);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--c-cream);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2rem 0 3rem;
  border-bottom: 1px solid var(--line-hair);
}

.page-contact .contact-hero__text h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--c-cream);
  margin: .85rem 0 1.05rem;
  max-width: 17ch;
}

.page-contact .contact-hero .lede {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 47ch;
  margin: 0;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.15rem 2.25rem;
  margin: 2rem 0 0;
  padding: 1.35rem 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
}

.page-contact .contact-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  min-width: 8.5rem;
}

.page-contact .contact-hero__facts .metric {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 1.3rem;
  letter-spacing: .02em;
  color: var(--c-cyan);
  line-height: 1.1;
}

.page-contact .contact-hero__facts li > span:last-child {
  font-size: 12px;
  letter-spacing: .07em;
  line-height: 1.55;
  color: var(--c-mist);
  opacity: .82;
}

.page-contact .contact-hero__figure {
  margin: 0;
  align-self: start;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-hair);
}

/* ---------- 区块骨架 ---------- */
.page-contact .contact-block {
  position: relative;
  padding: 3rem 0;
  border-bottom: 1px solid var(--line-hair);
}

.page-contact .contact-block--last {
  border-bottom: 0;
  padding-bottom: 2rem;
}

.page-contact .contact-block__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.page-contact .contact-block__head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.26;
  letter-spacing: -.005em;
  color: var(--c-cream);
  margin: 0;
}

.page-contact .contact-block__index {
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-amber);
  margin: 0;
}

.page-contact .contact-block__note {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 64ch;
  margin: 0 0 1.75rem;
}

.page-contact .contact-block__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-hair);
  transition: border-color 200ms var(--ease-out);
}

.page-contact .contact-block__note a:hover,
.page-contact .contact-block__note a:focus-visible {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 三类反馈 ---------- */
.page-contact .feedback-types {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .feedback-type {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem 1.15rem;
  align-items: start;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-contact .feedback-type__num {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--c-amber);
  padding-top: .3rem;
}

.page-contact .feedback-type__body h3 {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--c-cream);
  margin: 0 0 .5rem;
}

.page-contact .feedback-type__body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--c-mist);
  max-width: 64ch;
}

/* ---------- 编号拆解 ---------- */
.page-contact .code-spec {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0 0 2.75rem;
}

.page-contact .code-part {
  position: relative;
  padding: 1.2rem 1.25rem 1.35rem;
  background: var(--c-navy);
  border: 1px solid var(--line-hair);
  border-top: 2px solid var(--c-cyan);
}

.page-contact .code-part__value {
  display: block;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 1.15rem;
  letter-spacing: .06em;
  color: var(--c-cyan);
  margin-bottom: .55rem;
}

.page-contact .code-part__label {
  display: block;
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: .06em;
  color: var(--c-mist);
}

/* ---------- 处理节奏刻度条 ---------- */
.page-contact .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .timeline__item {
  position: relative;
  padding: 0 0 1.75rem 1.5rem;
  border-left: 1px solid var(--line-hair);
}

.page-contact .timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .timeline__dot {
  position: absolute;
  left: -4.5px;
  top: .35rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(37, 224, 212, .16);
}

.page-contact .timeline__stage {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .13em;
  color: var(--c-cyan);
  margin: 0 0 .45rem;
}

.page-contact .timeline__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--c-mist);
  max-width: 42ch;
}

.page-contact .timeline__footnote {
  margin: 2rem 0 0;
  padding: .9rem 0 0;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: .04em;
  color: var(--c-mist);
  opacity: .8;
  max-width: 68ch;
}

/* ---------- 邮箱与电话 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-contact .channel {
  position: relative;
  padding: 1.6rem 1.4rem 1.7rem 1.7rem;
  background: var(--c-navy);
  border: 1px solid var(--line-hair);
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--c-cyan);
}

.page-contact .channel--tel::after {
  background: var(--c-amber);
}

.page-contact .channel__label {
  margin: 0 0 .8rem;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-mist);
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1rem, 2.6vw, 1.35rem);
  letter-spacing: .01em;
  color: var(--c-cream);
  overflow-wrap: anywhere;
  margin-bottom: 1rem;
}

.page-contact .channel__desc {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--c-mist);
  max-width: 52ch;
}

/* ---------- 地址与工作时间 ---------- */
.page-contact .address-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.page-contact .addr-item__label {
  margin: 0 0 .7rem;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-amber);
}

.page-contact .addr-item__value {
  margin: 0 0 .7rem;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--c-cream);
  max-width: 30ch;
}

.page-contact .addr-item__value.metric {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: .03em;
  font-size: 1.15rem;
  color: var(--c-cyan);
}

.page-contact .addr-item__hint {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--c-mist);
  max-width: 44ch;
}

/* ---------- 区域服务 ---------- */
.page-contact .region {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

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

.page-contact .region__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-hair);
}

.page-contact .region__text .contact-block__note {
  margin-bottom: 1.5rem;
}

.page-contact .region__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-contact .region__facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .9rem;
  padding: .85rem 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .region__facts .metric {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  letter-spacing: .03em;
  color: var(--c-cyan);
  white-space: nowrap;
}

.page-contact .region__facts li > span:last-child {
  font-size: .875rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 协作与建议 ---------- */
.page-contact .collab-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

.page-contact .collab-item {
  padding-top: 1.15rem;
  border-top: 2px solid var(--c-masthead);
}

.page-contact .collab-item h3 {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--c-cream);
  margin: 0 0 .6rem;
}

.page-contact .collab-item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--c-mist);
  max-width: 60ch;
}

.page-contact .collab-item a,
.page-contact .collab-tail a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-hair);
  transition: border-color 200ms var(--ease-out);
}

.page-contact .collab-item a:hover,
.page-contact .collab-item a:focus-visible,
.page-contact .collab-tail a:hover,
.page-contact .collab-tail a:focus-visible {
  border-bottom-color: var(--c-cyan);
}

.page-contact .collab-tail {
  margin: 0;
  padding: 1.35rem 1.4rem;
  background: var(--c-navy);
  border-left: 3px solid var(--c-amber);
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 72ch;
}

/* ---------- 焦点可见性 ---------- */
.page-contact a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .code-spec {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    align-items: stretch;
  }

  .page-contact .address-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    gap: 2.5rem;
  }

  .page-contact .collab-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 2.5rem;
  }

  .page-contact .collab-item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 3.5rem;
    align-items: start;
    padding: 3rem 0 4rem;
  }

  .page-contact .contact-block {
    padding: 4rem 0;
  }

  .page-contact .contact-block__head {
    margin-bottom: 1.4rem;
  }

  .page-contact .feedback-type {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 1rem 1.5rem;
    padding: 1.6rem 0;
  }

  .page-contact .timeline {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2rem;
  }

  .page-contact .timeline__item {
    padding: 1.9rem 0 0 0;
    border-left: 0;
    border-top: 1px solid var(--line-hair);
  }

  .page-contact .timeline__item:last-child {
    border-top-color: var(--c-cyan-deep);
  }

  .page-contact .timeline__dot {
    left: 0;
    top: -4.5px;
  }

  .page-contact .timeline__text {
    max-width: none;
    padding-right: 1rem;
  }

  .page-contact .channels {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
  }

  .page-contact .region {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 3rem;
    align-items: center;
  }

  .page-contact .collab-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .collab-item:first-child {
    grid-column: auto;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-hero {
    padding: 3.5rem 0 4.5rem;
  }

  .page-contact .contact-block__note {
    margin-bottom: 2.25rem;
  }

  .page-contact .collab-tail {
    margin-left: 0;
    margin-right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .breadcrumb a,
  .page-contact .contact-block__note a,
  .page-contact .collab-item a,
  .page-contact .collab-tail a {
    transition: none;
  }
}