.page-contact {
  padding: calc(var(--bar-h) + 22px) 0 96px;
  color: var(--paper);
}

.page-contact .crumbs {
  margin-bottom: 26px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 26px;
}

.page-contact .contact-hero__head {
  max-width: 820px;
}

.page-contact .contact-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero .lede {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 68ch;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .channel-card {
  position: relative;
  padding: 24px 20px 26px;
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-900) 80%);
  transition: background 260ms var(--ease), box-shadow 260ms var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 2px;
  background: var(--line);
  transition: width 300ms var(--ease), background 260ms var(--ease);
}

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  width: 100%;
}

.page-contact .channel-card--thunder::before { background: var(--thunder); }
.page-contact .channel-card--volt::before { background: var(--volt); }
.page-contact .channel-card--violet::before { background: var(--violet); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  background: linear-gradient(160deg, #17233f 0%, var(--ink-900) 82%);
  box-shadow: inset 0 0 0 1px rgba(255, 106, 43, 0.32), 0 0 32px rgba(255, 106, 43, 0.1);
}

.page-contact .channel-card__idx {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .channel-card__label {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .channel-card__value {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.7vw, 1.15rem);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--volt);
  word-break: break-all;
  overflow-wrap: anywhere;
}

.page-contact .channel-card--thunder .channel-card__value { color: var(--thunder); }
.page-contact .channel-card__value--lg {
  font-size: clamp(1.2rem, 3.6vw, 1.55rem);
}
.page-contact .channel-card__value--addr {
  font-size: clamp(0.9rem, 2.4vw, 1rem);
  color: var(--paper);
  word-break: normal;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 服务时段条 ---------- */
.page-contact .contact-hours {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--thunder);
  background: rgba(255, 106, 43, 0.05);
}

.page-contact .contact-hours p {
  margin: 0;
  flex: 1 1 260px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 章节通用 ---------- */
.page-contact .sect__head {
  max-width: 760px;
  margin-bottom: 30px;
}

.page-contact .sect__title {
  margin: 10px 0 14px;
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.015em;
}

.page-contact .sect .lede {
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .eyebrow {
  color: var(--volt);
}

/* ---------- 工单标签 ---------- */
.page-contact .contact-tabs {
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .contact-tabs .tabs__list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-contact .contact-tabs .tabs__list::-webkit-scrollbar { display: none; }

.page-contact .contact-tabs .tabs__btn {
  flex: 0 0 auto;
  appearance: none;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 15px 20px;
  white-space: nowrap;
  cursor: pointer;
  transition: color 200ms var(--ease), background 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .contact-tabs .tabs__btn:hover {
  color: var(--paper);
  background: rgba(243, 234, 217, 0.04);
}

.page-contact .contact-tabs .tabs__btn[aria-selected="true"] {
  color: var(--paper);
  background: linear-gradient(180deg, rgba(255, 106, 43, 0.18) 0%, rgba(255, 106, 43, 0.02) 100%);
  box-shadow: inset 0 -2px 0 var(--thunder);
}

.page-contact .contact-tabs .tabs__panel {
  padding: 24px 20px 26px;
}

.page-contact .contact-tabs .tabs__panel[hidden] {
  display: none;
}

.page-contact .panel-intro {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 72ch;
}

/* ---------- 材料清单双列 ---------- */
.page-contact .spec-list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .spec-list li {
  background: var(--ink-900);
  padding: 15px 16px 16px;
  border-left: 2px solid transparent;
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-contact .spec-list li:hover {
  border-left-color: var(--volt);
  background: #0d1729;
}

.page-contact .spec-list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-contact .spec-list span {
  display: block;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .ticket-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .ticket-note a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.35);
}

.page-contact .ticket-note a:hover {
  color: var(--thunder);
  border-bottom-color: rgba(255, 106, 43, 0.6);
}

/* ---------- 流程 ---------- */
.page-contact .flow-layout {
  display: grid;
  gap: 34px;
}

.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .flow-step {
  position: relative;
  padding: 0 0 28px 48px;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line) 0%, rgba(34, 48, 77, 0) 100%);
}

.page-contact .flow-step:last-child { padding-bottom: 0; }
.page-contact .flow-step:last-child::before { display: none; }

.page-contact .flow-step::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 13px;
  height: 13px;
  background: var(--ink-900);
  border: 1px solid var(--thunder);
  transform: rotate(45deg);
  transition: background 240ms var(--ease), box-shadow 240ms var(--ease);
}

.page-contact .flow-step:hover::after {
  background: var(--thunder);
  box-shadow: var(--glow-thunder);
}

.page-contact .flow-step__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 9px;
}

.page-contact .flow-step__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--volt);
}

.page-contact .flow-step__title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .flow-step__eta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
  border: 1px solid rgba(255, 194, 75, 0.34);
  padding: 2px 8px;
}

.page-contact .flow-step__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
  max-width: 62ch;
}

.page-contact .flow-figure,
.page-contact .resp-figure {
  margin: 0;
}

.page-contact .flow-figure figcaption,
.page-contact .resp-figure figcaption {
  margin-top: 12px;
  font-size: 12.8px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.page-contact .media__cap {
  position: absolute;
  left: 12px;
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--paper);
  background: rgba(5, 8, 15, 0.72);
  border: 1px solid var(--line);
  padding: 4px 9px;
}

/* ---------- 合作 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: 16px;
}

.page-contact .coop-card {
  position: relative;
  padding: 24px 20px 26px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--violet);
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  transition: box-shadow 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .coop-card--thunder { border-top-color: var(--thunder); }
.page-contact .coop-card--volt { border-top-color: var(--volt); }

.page-contact .coop-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px var(--line), 0 14px 32px rgba(5, 8, 15, 0.55);
}

.page-contact .coop-card__idx {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .coop-card__title {
  margin: 0 0 12px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-contact .coop-card__desc {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .coop-brief {
  margin-top: 22px;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .coop-brief__title {
  margin: 0 0 16px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .brief-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 15px;
  background: var(--ink-900);
  font-size: 13.6px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .brief-list__k {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--thunder);
  letter-spacing: 0.12em;
}

.page-contact .coop-brief__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应时效 ---------- */
.page-contact .resp-grid {
  display: grid;
  gap: 30px;
}

.page-contact .resp-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .resp-item {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--ink-900);
}

.page-contact .resp-item__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--volt);
}

.page-contact .resp-item__v {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .resp-foot {
  margin-top: 26px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--volt);
  background: rgba(53, 224, 208, 0.045);
}

.page-contact .resp-foot p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .resp-foot a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.35);
}

.page-contact .resp-foot a:hover {
  color: var(--thunder);
  border-bottom-color: rgba(255, 106, 43, 0.6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .channel-card { padding: 26px 24px 28px; }
  .page-contact .spec-list { grid-template-columns: repeat(2, 1fr); }
  .page-contact .brief-list { grid-template-columns: repeat(2, 1fr); }
  .page-contact .resp-list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .page-contact { padding-bottom: 110px; }
  .page-contact .channel-grid { grid-template-columns: repeat(3, 1fr); }
  .page-contact .sect { padding-top: 74px; padding-bottom: 74px; }
  .page-contact .coop-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .page-contact .contact-tabs .tabs__panel { padding: 28px 26px 30px; }
}

@media (min-width: 960px) {
  .page-contact { padding-top: calc(var(--bar-h) + 34px); }
  .page-contact .contact-hero { gap: 34px; }
  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
    gap: 46px;
  }
  .page-contact .flow-figure {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
  .page-contact .resp-grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
    align-items: start;
    gap: 40px;
  }
  .page-contact .contact-hero h1 { max-width: 22ch; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .coop-card,
  .page-contact .flow-step::after,
  .page-contact .spec-list li {
    transition: opacity 200ms linear;
  }
  .page-contact .coop-card:hover { transform: none; }
}
</main>