.page-contact {
  --contact-gap: clamp(16px, 2.4vw, 28px);
  --card-cut: 16px;
}

.page-contact .breadcrumbs {
  margin: clamp(16px, 3vw, 28px) 0 clamp(10px, 2vw, 20px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  padding-bottom: clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-contact .hero-copy {
  min-width: 0;
}

.page-contact .hero-title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(31px, 5.4vw, 64px);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .hero-title em {
  font-style: normal;
  color: var(--teal);
}

.page-contact .hero-lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--stone);
}

.page-contact .signal-strip {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 0 var(--card-cut) 0 var(--card-cut);
  overflow: hidden;
}

.page-contact .signal-strip li {
  padding: 14px 16px 15px;
  background: var(--ink-800);
  min-width: 0;
}

.page-contact .signal-key {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .signal-val {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.4vw, 15px);
  color: var(--teal);
  overflow-wrap: anywhere;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-contact .hero-visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--card-cut) 0 var(--card-cut) 0;
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .hero-visual::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal));
  pointer-events: none;
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-contact .hero-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.65;
  color: var(--stone);
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }
}

@media (min-width: 620px) {
  .page-contact .signal-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 联系渠道 + 响应说明 ---------- */
.page-contact .board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(34px, 5.5vw, 72px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .board-main {
  min-width: 0;
}

.page-contact .section-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-contact .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .section-lede {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .channel-stack {
  display: grid;
  gap: 12px;
}

.page-contact .channel {
  min-width: 0;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-radius: 0 var(--card-cut) 0 var(--card-cut);
  transition: border-color 200ms ease, background-color 200ms ease;
}

.page-contact .channel:hover {
  background: var(--deep);
}

.page-contact .channel--phone {
  border-left-color: var(--orange);
}

.page-contact .channel--support {
  border-left-color: var(--teal);
}

.page-contact .channel--partner {
  border-left-color: var(--moss);
}

.page-contact .channel-index {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-contact .channel-name {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .channel-value {
  display: inline-block;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 20px);
  line-height: 1.5;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  overflow-wrap: anywhere;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-contact .channel--phone .channel-value {
  color: var(--orange);
}

.page-contact .channel-value:hover,
.page-contact .channel-value:focus-visible {
  color: var(--paper);
  border-bottom-color: currentColor;
}

.page-contact .channel-desc {
  margin: 11px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--stone);
}

.page-contact .response-panel {
  position: relative;
  min-width: 0;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(165deg, var(--ink-800), var(--deep) 88%);
  border: 1px solid var(--line);
  border-radius: var(--card-cut) 0 var(--card-cut) 0;
  overflow: hidden;
}

.page-contact .response-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 2px;
  background: var(--orange);
}

.page-contact .response-title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--paper);
}

.page-contact .response-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 15px;
}

.page-contact .response-list li {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-contact .response-list strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
  color: var(--paper);
}

.page-contact .response-list p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--stone);
}

.page-contact .dot {
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(61, 242, 192, 0.16);
}

.page-contact .dot--warm {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.18);
}

.page-contact .dot--moss {
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(111, 154, 122, 0.18);
}

@media (min-width: 980px) {
  .page-contact .board {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

/* ---------- 联系之前 ---------- */
.page-contact .prep {
  padding: clamp(34px, 5.5vw, 72px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 42px);
}

.page-contact .prep-list {
  min-width: 0;
}

.page-contact .prep-item {
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-item:first-of-type {
  border-top: 1px solid var(--line);
}

.page-contact .prep-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color 180ms ease;
}

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

.page-contact .prep-item summary:hover {
  color: var(--teal);
}

.page-contact .prep-item summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .prep-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--teal);
}

.page-contact .prep-item[open] summary::after {
  content: "–";
}

.page-contact .prep-body {
  padding: 0 0 18px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--stone);
}

.page-contact .prep-visual {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 0 var(--card-cut) 0 var(--card-cut);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .prep-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .prep-visual figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.65;
  color: var(--stone);
}

@media (min-width: 940px) {
  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

/* ---------- 属地与备案 ---------- */
.page-contact .place {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 46px);
  padding: clamp(34px, 5.5vw, 72px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .place-copy {
  min-width: 0;
}

.page-contact .place-address {
  display: block;
  margin: 6px 0 14px;
  padding-left: 14px;
  border-left: 2px solid var(--clay);
  font-style: normal;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 1.55;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .place-meta {
  list-style: none;
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 0 var(--card-cut) 0 var(--card-cut);
  overflow: hidden;
}

.page-contact .place-meta li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 11px 14px;
  background: var(--ink-900);
}

.page-contact .meta-key {
  font-size: 13px;
  color: var(--stone);
}

.page-contact .meta-val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--teal);
}

.page-contact .place-visual {
  min-width: 0;
  padding: clamp(10px, 2vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--card-cut) 0 var(--card-cut) 0;
  background:
    radial-gradient(circle at 76% 24%, rgba(61, 242, 192, 0.1), transparent 62%),
    var(--deep);
  overflow: hidden;
}

.page-contact .place-visual svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 880px) {
  .page-contact .place {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

/* ---------- 合作与一般咨询 ---------- */
.page-contact .partner {
  padding: clamp(34px, 5.5vw, 72px) 0 clamp(26px, 4vw, 44px);
}

.page-contact .partner-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(20px, 3vw, 34px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  border-radius: 0 0 var(--card-cut) var(--card-cut);
}

.page-contact .partner-inner h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .partner-copy {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--stone);
}

.page-contact .partner-actions {
  min-width: 0;
}

.page-contact .partner-actions .btn {
  margin-bottom: 14px;
}

.page-contact .link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .link-row a {
  font-size: 13.5px;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 192, 0.35);
  padding-bottom: 2px;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-contact .link-row a:hover,
.page-contact .link-row a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

@media (min-width: 860px) {
  .page-contact .partner-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

/* ---------- 备案收束带 ---------- */
.page-contact .icp-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .icp-key {
  color: var(--stone);
}

.page-contact .icp-num {
  color: var(--moss);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel-value,
  .page-contact .prep-item summary,
  .page-contact .link-row a {
    transition: none;
  }
}