.page-contact {
  --contact-rail: 316px;
  --contact-pad: clamp(20px, 2.6vw, 28px);
  --contact-gap: clamp(22px, 3.2vw, 44px);
  --contact-flow: clamp(16px, 2.2vw, 24px);
  display: block;
}

.page-contact .breadcrumbs {
  margin: clamp(20px, 3.6vw, 34px) 0 0;
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .breadcrumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-line);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-intro {
  padding-top: clamp(22px, 3.6vw, 40px);
}

.page-contact .contact-intro__inner {
  max-width: 880px;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-contact .contact-title {
  font-family: var(--font-head);
  font-size: clamp(30px, 5vw, 58px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 22ch;
}

.page-contact .contact-lede {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
  max-width: 62ch;
}

/* ---------- 主分栏 ---------- */

.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  align-items: start;
}

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

@media (min-width: 940px) {
  .page-contact .contact-split {
    grid-template-columns: var(--contact-rail) minmax(0, 1fr);
  }
}

/* 左侧渠道轨 */

.page-contact .contact-col-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: var(--rule);
}

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

.page-contact .channel-card {
  position: relative;
  background: var(--panel);
  border: var(--rule);
  border-radius: var(--radius-card);
  padding: var(--contact-pad);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 3px;
  height: 0;
  background: var(--cyan);
  border-radius: 0 2px 2px 0;
  transition: height 200ms var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--cyan-line);
  background: linear-gradient(180deg, rgba(56, 242, 200, 0.06), rgba(56, 242, 200, 0) 62%), var(--panel);
}

.page-contact .channel-card:hover::after,
.page-contact .channel-card:focus-within::after {
  height: calc(100% - 44px);
}

.page-contact .channel-kind {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}

.page-contact .channel-kind::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.1vw, 21px);
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--cyan);
  margin: 0 0 12px;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-value--text {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper);
}

.page-contact .channel-fit {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .contact-rail-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-rail-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--cyan-line);
}

.page-contact .contact-rail-note a:hover {
  border-bottom-style: solid;
}

/* ---------- 右侧流程区 ---------- */

.page-contact .contact-col--flow {
  display: flex;
  flex-direction: column;
  gap: var(--contact-flow);
}

.page-contact .contact-media {
  margin: 0;
}

.page-contact .contact-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center;
  border: var(--rule);
  border-radius: var(--radius-card);
  background: var(--ink-800);
}

.page-contact .contact-media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .flow-stack {
  display: grid;
  gap: var(--contact-flow);
}

.page-contact .flow-panel {
  position: relative;
  padding: var(--contact-pad) var(--contact-pad) var(--contact-pad) calc(var(--contact-pad) + 8px);
  background: linear-gradient(180deg, rgba(10, 30, 38, 0.92), rgba(5, 16, 14, 0.92));
  border: var(--rule);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-contact .flow-panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(56, 242, 200, 0) 78%);
}

.page-contact .flow-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.1vw, 24px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-contact .flow-step {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-contact .flow-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .flow-text a,
.page-contact .flow-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--cyan-line);
}

.page-contact .flow-text a:hover,
.page-contact .flow-foot a:hover {
  border-bottom-style: solid;
}

.page-contact .check-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-contact .check-list li + li {
  border-top: 1px solid rgba(76, 107, 102, 0.35);
}

.page-contact .check-list label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 2px;
  font-size: 16px;
  line-height: 1.68;
  color: var(--muted);
  cursor: pointer;
  transition: color 160ms var(--ease);
}

.page-contact .check-list input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 17px;
  height: 17px;
  margin: 5px 0 0;
  border: 1px solid var(--line);
  border-radius: 4px 1px 4px 1px;
  background: transparent;
  position: relative;
  cursor: pointer;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-contact .check-list input[type="checkbox"]:checked {
  border-color: var(--cyan);
  background: var(--cyan-soft);
}

.page-contact .check-list input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(40deg);
}

.page-contact .check-list input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--cyan-line);
  outline-offset: 2px;
}

.page-contact .check-list input[type="checkbox"]:checked + span {
  color: var(--paper);
}

.page-contact .flow-foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(76, 107, 102, 0.45);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-timing {
  margin: 0;
}

.page-contact .contact-timing .notice-title {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
}

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

.page-contact .contact-timing p + p {
  margin-top: 6px;
}

/* ---------- 底部备案与服务地区色带 ---------- */

.page-contact .contact-band {
  margin-top: clamp(52px, 8vw, 96px);
  padding: clamp(30px, 5vw, 56px) 0;
  background:
    linear-gradient(135deg, rgba(27, 74, 92, 0.55) 0%, rgba(10, 30, 38, 0.9) 55%, rgba(5, 16, 14, 0.95) 100%),
    repeating-linear-gradient(90deg, rgba(76, 107, 102, 0.18) 0 1px, transparent 1px 56px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-band__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  align-items: center;
}

@media (min-width: 860px) {
  .page-contact .contact-band__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

.page-contact .contact-band__title {
  font-family: var(--font-head);
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-contact .contact-band__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 46ch;
}

.page-contact .band-list {
  list-style: none;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 560px) {
  .page-contact .band-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .band-item {
  display: grid;
  gap: 7px;
  padding: 14px 16px;
  border: 1px solid rgba(76, 107, 102, 0.55);
  border-radius: var(--radius-soft);
  background: rgba(5, 16, 14, 0.48);
}

.page-contact .band-item__key {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .band-item__key::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .band-item__val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  line-height: 1.45;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-band__art img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(76, 107, 102, 0.5);
  border-radius: var(--radius-soft);
  background: var(--ink-800);
  opacity: 0.92;
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 560px) {
  .page-contact .flow-title {
    display: block;
  }

  .page-contact .flow-step {
    display: block;
    margin-bottom: 6px;
  }

  .page-contact .flow-panel {
    padding-left: calc(var(--contact-pad) + 6px);
  }

  .page-contact .channel-value {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card::after,
  .page-contact .breadcrumbs a {
    transition: none;
  }
}