.page-contact {
  --c-block: clamp(52px, 8vw, 92px);
  --c-cyan-line: rgba(34, 211, 238, .45);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.16;
  margin: 0;
}

.page-contact h1 {
  font-size: clamp(2rem, 6.6vw, 3.5rem);
  letter-spacing: .01em;
}

.page-contact h2 {
  font-size: clamp(1.42rem, 3.4vw, 2.15rem);
}

.page-contact h3 {
  font-size: 1.05rem;
  letter-spacing: .005em;
}

.page-contact p {
  margin: 0;
}

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

.page-contact .section-block {
  padding: var(--c-block) 0;
}

.page-contact .rule-dash {
  border: 0;
  height: 1px;
  margin: 0 auto;
  max-width: 1440px;
  background: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 20px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 4vw, 44px) 0 clamp(92px, 14vw, 148px);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  opacity: .34;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(148deg, var(--ink-900) 10%, rgba(18, 48, 85, .78) 52%, var(--ink-900) 92%);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .crumbs {
  margin-bottom: clamp(24px, 5vw, 46px);
}

.page-contact .contact-hero .eyebrow {
  margin-bottom: 14px;
}

.page-contact .contact-hero__lede {
  max-width: 62ch;
  margin-top: 18px;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

/* ---------- 联系卡片带 ---------- */

.page-contact .contact-band {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * clamp(66px, 11vw, 104px));
}

.page-contact .contact-strip {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lift);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-contact .contact-cell {
  position: relative;
  padding: 26px 20px 28px;
}

.page-contact .contact-cell + .contact-cell {
  border-top: 1px solid var(--line);
}

.page-contact .contact-cell__label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-cell__label svg {
  flex: none;
}

.page-contact .contact-cell__value {
  margin-bottom: 10px;
  font-size: clamp(.95rem, 2.5vw, 1.05rem);
  font-weight: 600;
  color: var(--text);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-cell__note {
  margin-bottom: 18px;
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.7;
}

.page-contact .contact-cell .copy-chip {
  margin-right: 8px;
  margin-top: 4px;
  font-size: .82rem;
  padding: .38rem .9rem;
}

.page-contact .copy-chip[data-copied="true"] {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(163, 230, 53, .1);
}

.page-contact .contact-band__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 18px;
  font-size: .84rem;
  color: var(--muted);
}

/* ---------- 咨询前准备 ---------- */

.page-contact .prep-grid {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  align-items: start;
}

.page-contact .prep-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .prep-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 18px 16px;
  background: var(--panel);
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-contact .prep-list__idx {
  padding-top: 3px;
  font-size: .84rem;
  letter-spacing: .08em;
  color: var(--cyan-soft);
}

.page-contact .prep-list h3 {
  margin-bottom: 6px;
}

.page-contact .prep-list p {
  font-size: .92rem;
  color: var(--muted);
}

.page-contact .prep-aside {
  margin-top: 6px;
}

.page-contact .prep-aside .eyebrow {
  margin-bottom: 16px;
}

.page-contact .prep-aside__tail {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: .88rem;
  color: var(--muted);
}

.page-contact .check-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .check-list li {
  position: relative;
  padding-left: 20px;
  font-size: .92rem;
  color: var(--text);
}

.page-contact .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 2px;
  background: var(--lime);
}

/* ---------- 沟通主题 ---------- */

.page-contact .topic-list {
  margin-top: 30px;
}

.page-contact .topic {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-contact .topic + .topic {
  margin-top: 12px;
}

.page-contact .topic > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .topic > summary::-webkit-details-marker {
  display: none;
}

.page-contact .topic__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  color: var(--cyan);
  background: rgba(34, 211, 238, .1);
  border: 1px solid var(--c-cyan-line);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}

.page-contact .topic__head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-contact .topic__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .01em;
}

.page-contact .topic__hint {
  font-size: .8rem;
  color: var(--muted);
}

.page-contact .topic__chev {
  width: 10px;
  height: 10px;
  margin-right: 6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .25s var(--ease);
}

.page-contact .topic[open] .topic__chev {
  transform: rotate(225deg);
}

.page-contact .topic[open] > summary {
  border-bottom: 1px dashed var(--line);
}

.page-contact .topic__body {
  padding: 18px 18px 22px;
  font-size: .93rem;
  color: var(--muted);
}

.page-contact .topic__body p {
  max-width: 74ch;
}

/* ---------- 回复节奏 ---------- */

.page-contact .cadence-track {
  display: grid;
  gap: 26px;
  margin-top: 34px;
}

.page-contact .cadence-node {
  position: relative;
  padding-top: 24px;
}

.page-contact .cadence-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 8px, transparent 8px 16px);
  opacity: .55;
}

.page-contact .cadence-node::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  transform: skewX(-14deg);
}

.page-contact .cadence-node__step {
  font-size: .82rem;
  letter-spacing: .16em;
  color: var(--cyan-soft);
  margin-bottom: 8px;
}

.page-contact .cadence-node h3 {
  margin-bottom: 8px;
}

.page-contact .cadence-node p {
  font-size: .9rem;
  color: var(--muted);
}

/* ---------- 信函与寄送 ---------- */

.page-contact .postal-card {
  position: relative;
  padding: clamp(24px, 4.4vw, 44px);
  background: linear-gradient(135deg, var(--ink-850) 0%, var(--panel-2) 58%, var(--ink-850) 100%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-contact .postal-card h2 {
  margin-top: 10px;
  max-width: 22ch;
}

.page-contact .postal-card__lede {
  max-width: 66ch;
  margin-top: 16px;
  font-size: .96rem;
  color: var(--muted);
}

.page-contact .postal-rows {
  margin: 28px 0 26px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-contact .postal-row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .postal-row dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .postal-row dd {
  margin: 0;
  font-size: .95rem;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .postal-card .copy-chip {
  font-size: .84rem;
}

/* ---------- 区域服务 ---------- */

.page-contact .region-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
}

.page-contact .region-copy h2 {
  margin-top: 10px;
  max-width: 20ch;
}

.page-contact .region-copy > p {
  max-width: 58ch;
  margin-top: 16px;
  font-size: .96rem;
  color: var(--muted);
}

.page-contact .region-facts {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.page-contact .region-facts > div {
  padding: 14px 16px;
  background: var(--panel);
  border-left: 2px solid var(--lime);
}

.page-contact .region-facts dt {
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 4px;
}

.page-contact .region-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .98rem;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.page-contact .region-mark {
  margin-top: 24px;
  opacity: .9;
}

.page-contact .region-mark svg {
  width: 100%;
  max-width: 340px;
  height: auto;
}

.page-contact .region-figure {
  margin: 0;
}

/* ---------- 其他入口 ---------- */

.page-contact .more-links {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-contact .more-links a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .more-links a:hover,
.page-contact .more-links a:focus-visible {
  transform: translateX(4px);
  border-left-color: var(--lime);
}

.page-contact .more-links__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.page-contact .more-links__desc {
  font-size: .86rem;
  color: var(--muted);
}

.page-contact .more-note {
  margin-top: 22px;
  font-size: .88rem;
  color: var(--muted);
}

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

.page-contact .more-note a:hover,
.page-contact .more-note a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 平板与桌面 ---------- */

@media (min-width: 720px) {
  .page-contact .postal-row {
    grid-template-columns: 170px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-contact .topic__head {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

  .page-contact .topic__hint {
    padding-bottom: 1px;
  }

  .page-contact .topic > summary {
    padding: 20px 24px;
    gap: 18px;
  }

  .page-contact .topic__body {
    padding: 20px 24px 26px 82px;
  }

  .page-contact .more-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-cell {
    padding: 30px 26px 32px;
  }

  .page-contact .contact-cell + .contact-cell {
    border-top: 0;
  }

  .page-contact .contact-cell + .contact-cell::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14%;
    bottom: 14%;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--cyan), transparent);
    transform: skewX(-14deg);
  }

  .page-contact .cadence-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-contact .region-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-contact .prep-aside {
    position: sticky;
    top: 108px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .more-links a,
  .page-contact .topic__chev {
    transition: none;
  }
}