.page-contact {
  --pc-gap: clamp(20px, 3vw, 40px);
  --pc-pad: clamp(18px, 2.6vw, 28px);
  background: var(--ink-950);
  color: var(--paper);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(26px, 4.5vw, 60px) clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  width: 64%;
  height: 180%;
  background: radial-gradient(ellipse at 62% 42%, rgba(47, 224, 200, .11), transparent 62%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  max-width: 900px;
}

.page-contact .contact-hero__title {
  margin: 10px 0 18px;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-contact .contact-hero__lead {
  max-width: 42ch;
  margin: 0 0 26px;
  color: var(--fog);
  font-size: 17px;
  line-height: 1.75;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 通用小节节奏 ---------- */
.page-contact .section {
  padding-block: clamp(42px, 6.5vw, 84px);
}

.page-contact .section--tight {
  padding-block: clamp(34px, 5vw, 64px);
}

.page-contact .section-head {
  max-width: 720px;
  margin-bottom: clamp(22px, 3.2vw, 38px);
}

.page-contact .section-head .h2 {
  margin: 8px 0 14px;
}

.page-contact .section-head .lead {
  margin: 0;
  color: var(--fog);
  font-size: 16px;
  line-height: 1.75;
}

.page-contact .link-inline {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

.page-contact .link-inline:hover,
.page-contact .link-inline:focus-visible {
  color: var(--orange);
}

/* ---------- 分屏：通道卡 + 信息板 ---------- */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

@media (min-width: 980px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1fr) minmax(330px, 388px);
    gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }
}

.page-contact .channel-rail {
  display: grid;
  align-content: start;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  padding: var(--pc-pad);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: inset 3px 0 0 var(--cyan);
  transition: transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--orange);
  box-shadow: inset 3px 0 0 var(--orange), 0 12px 28px rgba(5, 7, 15, .6);
}

.page-contact .channel-index {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yellow);
  border: 1px solid rgba(255, 201, 77, .45);
  border-radius: var(--r-sm);
}

.page-contact .channel-card .h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.2vw, 21px);
}

.page-contact .channel-desc {
  max-width: 54ch;
  margin: 0 0 14px;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .channel-route {
  margin: 0 0 6px;
  font-size: 14px;
  color: var(--paper);
}

.page-contact .channel-route .mono {
  color: var(--cyan);
  font-size: 13px;
  word-break: break-all;
}

.page-contact .channel-more {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-contact .channel-more summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  color: var(--fog);
  transition: color var(--dur) var(--ease);
}

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

.page-contact .channel-more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
}

.page-contact .channel-more[open] summary::before {
  content: "\2013";
}

.page-contact .channel-more summary:hover,
.page-contact .channel-more summary:focus-visible {
  color: var(--paper);
}

.page-contact .channel-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--fog);
  font-size: 14px;
  line-height: 1.85;
}

.page-contact .channel-list li::marker {
  color: var(--cyan);
}

/* ---------- 联系信息板 ---------- */
.page-contact .contact-plate {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: var(--pc-pad);
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

@media (min-width: 980px) {
  .page-contact .contact-plate {
    position: sticky;
    top: 96px;
  }
}

.page-contact .contact-plate__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .14;
}

.page-contact .plate-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.page-contact .plate-coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--yellow);
}

.page-contact .plate-title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .plate-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 10px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
  transition: background var(--dur) var(--ease);
}

.page-contact .plate-row:focus-within {
  background: linear-gradient(90deg, rgba(154, 107, 255, .18), rgba(154, 107, 255, 0));
}

.page-contact .plate-label {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--fog);
}

.page-contact .plate-value {
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .plate-value--mono {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cyan);
}

.page-contact .plate-value--addr {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}

.page-contact .copy-btn {
  align-self: center;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--fog);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.page-contact .copy-status {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-contact .plate-foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--fog);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 反馈材料清单 ---------- */
.page-contact .material-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-contact .material-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .mat-idx {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--yellow);
}

.page-contact .mat-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .mat-body p {
  max-width: 62ch;
  margin: 0;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .material-tip {
  margin: 24px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 106, 43, .08);
  color: var(--fog);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 服务时段 ---------- */
.page-contact .hours-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  align-items: center;
}

@media (min-width: 880px) {
  .page-contact .hours-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

.page-contact .hours-copy .lead {
  margin: 0 0 22px;
  color: var(--fog);
  font-size: 16px;
  line-height: 1.78;
}

.page-contact .hours-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .hours-list li {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--fog);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .hours-key {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

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

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

.page-contact .hours-figure .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog);
}

/* ---------- 合作与共建 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .coop-card {
  padding: var(--pc-pad);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border: 1px solid var(--line);
  border-top: 3px solid var(--violet);
  border-radius: var(--r-md);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--violet);
}

.page-contact .coop-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--violet);
  border: 1px solid rgba(154, 107, 255, .5);
  border-radius: var(--r-sm);
}

.page-contact .coop-card .h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.page-contact .coop-card p {
  margin: 0;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .coop-note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--cyan);
  color: var(--fog);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 服务范围与备案 ---------- */
.page-contact .coverage-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px);
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .coverage-panel::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 260px;
  height: 260px;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
                    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  transform: rotate(12deg);
  opacity: .55;
  -webkit-mask-image: radial-gradient(circle at 100% 100%, #000, transparent 72%);
  mask-image: radial-gradient(circle at 100% 100%, #000, transparent 72%);
  pointer-events: none;
}

.page-contact .coverage-panel .eyebrow,
.page-contact .coverage-panel .h2,
.page-contact .coverage-text,
.page-contact .coverage-meta {
  position: relative;
  z-index: 1;
}

.page-contact .coverage-panel .h2 {
  margin: 8px 0 14px;
}

.page-contact .coverage-text {
  max-width: 62ch;
  margin: 0;
  color: var(--fog);
  font-size: 16px;
  line-height: 1.78;
}

.page-contact .coverage-meta {
  display: grid;
  grid-template-columns: 1fr;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .coverage-meta > div {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .coverage-meta dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--fog);
}

.page-contact .coverage-meta dd {
  margin: 0;
  font-size: 15px;
  color: var(--paper);
}

.page-contact .coverage-meta dd.mono {
  color: var(--cyan);
  font-size: 14px;
  word-break: break-all;
}

@media (min-width: 720px) {
  .page-contact .coverage-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .coverage-meta > div {
    padding: 18px 22px 4px 0;
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-contact .coverage-meta > div:last-child {
    border-right: 0;
    padding-right: 0;
  }
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .visit-more {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .visit-more summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-contact .visit-more summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-contact .visit-more[open] summary::after {
  content: "\2013";
}

.page-contact .visit-more summary:hover,
.page-contact .visit-more summary:focus-visible {
  color: var(--cyan);
}

.page-contact .visit-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 4px 22px 22px;
  border-top: 1px dashed var(--line);
}

@media (min-width: 760px) {
  .page-contact .visit-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
  }
}

.page-contact .visit-body .h3 {
  margin: 16px 0 8px;
  font-size: 17px;
}

.page-contact .visit-body p {
  margin: 0;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 页尾收口 ---------- */
.page-contact .pc-closing {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-block: 30px 14px;
}

.page-contact .pc-closing__bar {
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--line) 32%, transparent);
}

.page-contact .pc-closing__text {
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--fog);
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 520px) {
  .page-contact .material-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-contact .mat-idx {
    padding-top: 0;
  }

  .page-contact .contact-plate,
  .page-contact .channel-card,
  .page-contact .coop-card {
    padding: 18px 16px;
  }

  .page-contact .visit-more summary,
  .page-contact .visit-body {
    padding-inline: 16px;
  }
}