.page-contact {
  --contact-max: 1100px;
  --contact-hair: 1px solid var(--line);
  position: relative;
  padding: clamp(1.75rem, 4.5vw, 3.25rem) clamp(1rem, 3.5vw, 2.75rem) clamp(3rem, 8vw, 6rem);
  background-color: var(--c-void);
  color: var(--c-paper);
  overflow-x: clip;
}

.page-contact > * {
  width: min(100%, var(--contact-max));
  margin-inline: auto;
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--c-lava);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ── 面包屑 ─────────────────────────────────────────── */
.page-contact .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(127, 192, 220, 0.72);
}

.page-contact .breadcrumb a {
  color: rgba(241, 247, 250, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-contact .breadcrumb span[aria-current] {
  color: var(--c-mist);
}

/* ── 首屏 ───────────────────────────────────────────── */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(1rem, 3vw, 2rem) clamp(2.25rem, 6vw, 3.75rem);
  border-bottom: var(--contact-hair);
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -6%;
  right: -10%;
  width: min(66%, 660px);
  height: 112%;
  background: linear-gradient(148deg, rgba(28, 110, 154, 0.34), rgba(10, 31, 43, 0.04) 62%);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: -1;
}

.page-contact .contact-hero__title {
  margin: 0.75rem 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(1.85rem, 4.6vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: 0.004em;
  color: var(--c-paper);
}

.page-contact .contact-hero__lede {
  max-width: 58ch;
  margin-bottom: clamp(1.75rem, 4.5vw, 2.75rem);
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(241, 247, 250, 0.74);
}

.page-contact .contact-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background-color: var(--line);
  border: var(--contact-hair);
}

@media (min-width: 680px) {
  .page-contact .contact-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .contact-channel {
  position: relative;
  padding: clamp(1.15rem, 3vw, 1.75rem);
  background: linear-gradient(158deg, rgba(18, 60, 85, 0.74), rgba(10, 31, 43, 0.94));
  transition: background var(--dur) var(--ease);
}

.page-contact .contact-channel:hover {
  background: linear-gradient(158deg, rgba(28, 110, 154, 0.42), rgba(10, 31, 43, 0.96));
}

.page-contact .contact-channel__label {
  margin: 0 0 0.7rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-mist);
}

.page-contact .contact-channel__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(1.1rem, 2.4vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--c-paper);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid rgba(28, 110, 154, 0.7);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .contact-channel__value:hover,
.page-contact .contact-channel__value:focus-visible {
  color: var(--c-lava-soft);
  border-bottom-color: var(--c-lava);
  transform: translateY(-1px);
}

.page-contact .contact-channel__hint {
  margin: 0.85rem 0 0;
  max-width: 34ch;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(241, 247, 250, 0.6);
}

.page-contact .contact-hero__hours {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding-top: clamp(1.1rem, 3vw, 1.6rem);
  border-top: 1px dashed var(--line-soft);
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(241, 247, 250, 0.78);
}

.page-contact .contact-hero__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-lava);
  box-shadow: 0 0 0 4px rgba(232, 88, 28, 0.18);
  transform: translateY(-2px);
}

/* ── 服务时段 ───────────────────────────────────────── */
.page-contact .contact-window {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4.5vw, 3.25rem);
  padding-block: clamp(3rem, 8vw, 5.5rem);
  border-bottom: var(--contact-hair);
}

@media (min-width: 820px) {
  .page-contact .contact-window {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: start;
  }
}

.page-contact .contact-window__title {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.6vw, 2.55rem);
  line-height: 1.2;
  color: var(--c-paper);
}

.page-contact .contact-window__text {
  max-width: 52ch;
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(241, 247, 250, 0.72);
}

.page-contact .contact-window__list {
  list-style: none;
  margin: clamp(1.5rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-window__list li {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-window__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-lava-soft);
}

.page-contact .contact-window__desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(241, 247, 250, 0.76);
}

.page-contact .contact-window__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--c-deep);
  border: var(--contact-hair);
}

.page-contact .contact-window__figure img,
.page-contact .contact-letter__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-window__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 52%, rgba(10, 31, 43, 0.62));
  pointer-events: none;
}

/* ── 反馈路径 ───────────────────────────────────────── */
.page-contact .contact-routes {
  padding-block: clamp(3rem, 8vw, 5.5rem);
  border-bottom: var(--contact-hair);
}

.page-contact .contact-routes__title {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.6vw, 2.55rem);
  line-height: 1.2;
  color: var(--c-paper);
}

.page-contact .contact-routes__lede {
  max-width: 62ch;
  margin: 0 0 clamp(1.9rem, 4.5vw, 2.75rem);
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(241, 247, 250, 0.7);
}

.page-contact .contact-routes__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(1.1rem, 2.6vw, 1.5rem);
}

@media (min-width: 880px) {
  .page-contact .contact-routes__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.35rem;
  }
}

.page-contact .route-sheet {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0 clamp(0.75rem, 2vw, 1.15rem);
  padding: clamp(1.25rem, 3vw, 1.85rem);
  background: linear-gradient(158deg, rgba(26, 35, 42, 0.96), rgba(10, 31, 43, 0.98));
  border: 1px solid var(--line);
  box-shadow: 6px 6px 0 rgba(18, 60, 85, 0.5);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .route-sheet:hover,
.page-contact .route-sheet:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 rgba(232, 88, 28, 0.32);
  border-color: var(--c-lava-soft);
}

.page-contact .route-sheet__idx {
  padding-top: 0.25rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-lava);
}

.page-contact .route-sheet__body {
  min-width: 0;
}

.page-contact .route-sheet__body h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.16rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--c-paper);
}

.page-contact .route-sheet__body p {
  margin: 0 0 0.9rem;
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(241, 247, 250, 0.66);
}

.page-contact .route-sheet__fields {
  list-style: none;
  margin: 0;
  padding: 0.8rem 0 0;
  display: grid;
  gap: 0.38rem;
  border-top: 1px dashed var(--line-soft);
}

.page-contact .route-sheet__fields li {
  position: relative;
  padding-left: 0.95rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: rgba(241, 247, 250, 0.58);
  transition: color var(--dur) var(--ease);
}

.page-contact .route-sheet__fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--c-mist);
}

.page-contact .route-sheet:hover .route-sheet__fields li,
.page-contact .route-sheet:focus-within .route-sheet__fields li {
  color: rgba(241, 247, 250, 0.82);
}

.page-contact .contact-routes__aside {
  max-width: 62ch;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(241, 247, 250, 0.6);
}

.page-contact .contact-routes__aside a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 192, 220, 0.5);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ── 纸质来信 ───────────────────────────────────────── */
.page-contact .contact-letter {
  padding-block: clamp(3rem, 8vw, 5.5rem);
  border-bottom: var(--contact-hair);
}

.page-contact .contact-letter__frame {
  display: grid;
  grid-template-columns: 1fr;
  border: var(--contact-hair);
  background: linear-gradient(160deg, rgba(18, 60, 85, 0.55), rgba(10, 31, 43, 0.96));
  box-shadow: 8px 8px 0 rgba(26, 35, 42, 0.9);
}

@media (min-width: 800px) {
  .page-contact .contact-letter__frame {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: stretch;
  }
}

.page-contact .contact-letter__figure {
  margin: 0;
  overflow: hidden;
  border-bottom: var(--contact-hair);
}

@media (min-width: 800px) {
  .page-contact .contact-letter__figure {
    border-bottom: 0;
    border-right: var(--contact-hair);
  }

  .page-contact .contact-letter__figure img {
    height: 100%;
  }
}

.page-contact .contact-letter__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.6rem, 4vw, 2.85rem);
}

.page-contact .contact-letter__title {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 3.2vw, 2.2rem);
  line-height: 1.22;
  color: var(--c-paper);
}

.page-contact .contact-letter__addr {
  margin: 0 0 1.1rem;
  padding-left: 0.9rem;
  border-left: 3px solid var(--c-lava);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(0.98rem, 2vw, 1.24rem);
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--c-lava-soft);
}

.page-contact .contact-letter__note {
  max-width: 46ch;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(241, 247, 250, 0.7);
}

/* ── 相关说明 ───────────────────────────────────────── */
.page-contact .contact-links {
  padding-block: clamp(2.25rem, 5.5vw, 3.5rem);
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .contact-links__title {
  margin: 0 0 1.1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--c-mist);
}

.page-contact .contact-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 640px) {
  .page-contact .contact-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

.page-contact .contact-links__list li {
  display: grid;
  gap: 0.32rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-links__list a {
  justify-self: start;
  padding-bottom: 0.1rem;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--c-paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(28, 110, 154, 0.7);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-contact .contact-links__list span {
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(241, 247, 250, 0.55);
}

/* ── 署名 ───────────────────────────────────────────── */
.page-contact .contact-signoff {
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  text-align: right;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(0.92rem, 1.6vw, 1.12rem);
  letter-spacing: 0.1em;
  color: rgba(127, 192, 220, 0.62);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-sheet,
  .page-contact .route-sheet__fields li,
  .page-contact .contact-channel__value,
  .page-contact .contact-channel {
    transition: none;
  }

  .page-contact .route-sheet:hover,
  .page-contact .route-sheet:focus-within,
  .page-contact .contact-channel__value:hover,
  .page-contact .contact-channel__value:focus-visible {
    transform: none;
  }
}
<<<END>>>