.page-contact {
  --ct-pad: 18px;
  --ct-rail: 300px;
}

.page-contact .contact-hero {
  padding: clamp(22px, 4.5vw, 52px) 0 0;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-contact .contact-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.14;
  letter-spacing: -.012em;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

/* 联系信息数据表 */
.page-contact .contact-table {
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--brown);
}

.page-contact .contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px var(--ct-pad);
  border-top: 1px solid rgba(42, 33, 24, .2);
}

.page-contact .contact-row:first-child {
  border-top: 0;
}

.page-contact .contact-row__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: #6b5b45;
}

.page-contact .contact-row__body {
  min-width: 0;
}

.page-contact .contact-row__val {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.page-contact .contact-row__val .mono {
  font-size: 16px;
  font-weight: 700;
  color: var(--brown);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-row__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #56493a;
}

.page-contact .copy-btn {
  appearance: none;
  border: 1px solid rgba(42, 33, 24, .42);
  background: transparent;
  color: var(--brown);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  padding: 5px 10px;
  cursor: pointer;
  transition: transform .14s var(--ease), border-color .14s var(--ease);
}

.page-contact .copy-btn:hover {
  border-color: var(--orange);
}

.page-contact .copy-btn:active {
  transform: translateY(1px);
  border-color: var(--orange);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .copy-hint {
  font-size: 12px;
  color: #a04a10;
}

/* 右侧时段状态条 */
.page-contact .contact-rail {
  display: grid;
  align-content: start;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.page-contact .rail-clock {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-contact .rail-clock__label {
  font-size: 11px;
  color: var(--mist);
}

.page-contact .rail-clock__bar {
  position: relative;
  flex: 1 1 auto;
  height: 10px;
  background: var(--ink-700);
  border: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 25%);
}

.page-contact .rail-clock__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--cyan), #1d9f8b);
  opacity: .85;
}

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

/* 图片容器 */
.page-contact .contact-figure {
  margin: 0;
  min-width: 0;
}

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

.page-contact .contact-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-contact .contact-figure--4x3 img {
  aspect-ratio: 4 / 3;
}

.page-contact .contact-figure figcaption {
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* 通用区块 */
.page-contact .contact-block {
  padding: clamp(40px, 6vw, 72px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-block:first-of-type {
  margin-top: clamp(36px, 6vw, 64px);
}

.page-contact .contact-block h2 {
  margin: 0 0 14px;
  font-size: clamp(20px, 3.6vw, 28px);
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-contact .contact-block p {
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .block-lede {
  max-width: 40em;
  margin: 0 0 8px;
}

/* 时段与处理顺序 */
.page-contact .hours__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .hours__copy > p {
  max-width: 36em;
}

.page-contact .steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: step;
}

.page-contact .steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

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

.page-contact .steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

.page-contact .hours__foot {
  margin: 22px 0 0;
  font-size: 14px;
}

.page-contact .hours__foot a,
.page-contact .lanes__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, .45);
}

.page-contact .hours__foot a:hover,
.page-contact .lanes__foot a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .hours__foot a:focus-visible,
.page-contact .lanes__foot a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* 来函信息清单 */
.page-contact .checklist {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-contact .checklist__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .checklist__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

/* 纠错区 */
.page-contact .feedback__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-contact .feedback__copy p {
  max-width: 38em;
  margin: 0 0 14px;
}

.page-contact .feedback__copy p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-fold {
  border: 1px solid var(--line);
  background: var(--ink-850);
}

.page-contact .contact-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

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

.page-contact .contact-fold summary::after {
  content: "＋";
  color: var(--orange);
  font-size: 14px;
}

.page-contact .contact-fold[open] summary::after {
  content: "－";
}

.page-contact .contact-fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .contact-fold ul {
  list-style: none;
  margin: 0;
  padding: 0 18px 16px;
}

.page-contact .contact-fold li {
  position: relative;
  padding: 9px 0 9px 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .contact-fold li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

/* 合作三条线 */
.page-contact .lanes {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 24px;
}

.page-contact .lane {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .lane h3 {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-contact .lane p {
  margin: 0;
  font-size: 14px;
}

.page-contact .lanes__foot {
  margin: 22px 0 0;
  font-size: 14px;
}

/* 办公地点与备案 */
.page-contact .office {
  background: var(--paper);
  color: var(--brown);
  padding: clamp(34px, 5.5vw, 60px) 0;
}

.page-contact .office__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .office h2 {
  margin: 0 0 14px;
  font-size: clamp(20px, 3.6vw, 26px);
  font-weight: 700;
  color: var(--brown);
}

.page-contact .office__addr {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--brown);
}

.page-contact .office__note {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: #56493a;
}

.page-contact .office__facts {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-content: start;
  border-top: 1px solid rgba(42, 33, 24, .25);
}

.page-contact .office__fact {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(42, 33, 24, .25);
}

.page-contact .office__fact dt {
  font-size: 13px;
  color: #6b5b45;
}

.page-contact .office__fact dd {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--brown);
  overflow-wrap: anywhere;
}

.page-contact .office__legal {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid rgba(42, 33, 24, .25);
  font-size: 13px;
  line-height: 1.8;
  color: #6b5b45;
}

/* 中等屏幕 */
@media (min-width: 560px) {
  .page-contact .contact-row {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
  }

  .page-contact .contact-row__key {
    padding-top: 3px;
  }

  .page-contact .checklist__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 16px;
  }

  .page-contact .checklist__k {
    padding-top: 3px;
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) var(--ct-rail);
    gap: 44px;
    align-items: start;
  }

  .page-contact .contact-rail {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 24px;
    position: sticky;
    top: 92px;
  }

  .page-contact .hours__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .feedback__cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .office__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .office__facts {
    border-top: 0;
  }

  .page-contact .office__fact {
    grid-template-columns: 104px minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-contact .lanes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .page-contact .lane {
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 22px 24px;
  }

  .page-contact .lane:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn:active {
    transform: none;
  }
}