/* ===== page-contact ===== */
.page-contact {
  --pc-gap: clamp(16px, 3vw, 28px);
  --pc-card-bg: #0F3229;
  background: var(--ink);
  color: var(--mist);
  overflow-x: clip;
}

.page-contact .container {
  position: relative;
}

/* ---------- hero ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(44px, 7vw, 88px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto -20%;
  height: 130%;
  background-image:
    linear-gradient(to right, rgba(27, 74, 62, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 74, 62, 0.55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse at 78% 12%, rgba(0, 0, 0, 0.9), transparent 68%);
  mask-image: radial-gradient(ellipse at 78% 12%, rgba(0, 0, 0, 0.9), transparent 68%);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumbs {
  position: relative;
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-contact .contact-hero .display {
  position: relative;
  max-width: 15ch;
  margin: 0;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero .display::after {
  content: "";
  display: block;
  width: clamp(64px, 14vw, 148px);
  height: 4px;
  margin-top: clamp(18px, 3vw, 30px);
  background: linear-gradient(90deg, var(--lime), var(--cyan));
}

.page-contact .hero-lede {
  position: relative;
  max-width: 60ch;
  margin: clamp(20px, 3vw, 30px) 0 0;
  color: var(--fog);
}

.page-contact .hero-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.5vw, 34px);
}

/* 坐标索引 */
.page-contact .coord-index {
  position: relative;
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: 1px solid var(--line);
}

.page-contact .coord-index li {
  border-top: 1px solid var(--line);
}

.page-contact .coord-index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 44px;
  padding: 14px 2px;
  color: var(--fog);
  text-decoration: none;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .coord-index a:hover,
.page-contact .coord-index a:focus-visible {
  color: var(--mist);
  background: rgba(95, 255, 208, 0.06);
}

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

.page-contact .coord-num {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-contact .coord-index a:hover .coord-num {
  color: var(--lime);
}

.page-contact .coord-text {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  font-size: 15px;
}

.page-contact .coord-text strong {
  font-weight: 700;
  color: var(--mist);
}

.page-contact .coord-text span {
  font-size: 13px;
  color: var(--sage);
  letter-spacing: 0.02em;
}

/* ---------- 合作类型 ---------- */
.page-contact .section-head {
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-contact .section-head .lede {
  color: var(--fog);
  margin-top: 14px;
}

.page-contact .type-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .type-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(20px, 3.2vw, 32px);
  background: var(--pine);
  border-left: 2px solid transparent;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .type-card:hover,
.page-contact .type-card:focus-within {
  background: var(--pc-card-bg);
  border-left-color: var(--cyan);
  transform: translateY(-3px);
}

.page-contact .type-card .tag {
  justify-self: start;
}

.page-contact .type-card h3 {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--mist);
}

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

.page-contact .type-prep {
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px !important;
  color: var(--sage) !important;
}

.page-contact .type-prep .mono {
  display: inline-block;
  margin-right: 8px;
  color: var(--orange);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(24px, 4vw, 48px);
  background: linear-gradient(155deg, var(--pc-card-bg), #08221B 62%, #061A15);
  border: 1px solid var(--line);
}

.page-contact .channel-intro p {
  margin: 14px 0 0;
  color: var(--fog);
  max-width: 52ch;
}

.page-contact .channel-note {
  display: inline-block;
  padding: 8px 12px;
  border: 1px solid var(--orange-deep);
  color: var(--orange);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-contact .channel-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .channel-row {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .channel-row:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .channel-row dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sage);
  text-transform: uppercase;
}

.page-contact .channel-row dd {
  margin: 6px 0 0;
}

.page-contact .channel-value {
  display: inline-block;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.4;
  color: var(--lime);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-value--addr {
  color: var(--mist);
  font-size: clamp(14px, 1.9vw, 17px);
}

.page-contact .channel-sub {
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage) !important;
  max-width: 46ch;
}

/* ---------- 合作流程 ---------- */
.page-contact .process-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

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

.page-contact .route-step {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  padding-bottom: clamp(22px, 3.6vw, 34px);
}

.page-contact .route-step:last-child {
  padding-bottom: 0;
}

.page-contact .route-step::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 52px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(to bottom, var(--orange-deep), var(--line));
}

.page-contact .route-step:last-child::before {
  display: none;
}

.page-contact .route-node {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--orange);
  border-radius: 50%;
  background: var(--ink);
  color: var(--orange);
  font-size: 13px;
  letter-spacing: 0.06em;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .route-step:last-child .route-node {
  border-color: var(--lime);
  color: var(--lime);
}

.page-contact .route-step:hover .route-node,
.page-contact .route-step:focus-within .route-node {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-contact .route-step:last-child:hover .route-node {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .route-body h3 {
  margin: 12px 0 0;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--mist);
}

.page-contact .route-body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog);
}

.page-contact .process-figure {
  position: relative;
  margin: 0;
  background: linear-gradient(150deg, var(--pine), #04120F);
}

.page-contact .process-figure img,
.page-contact .location-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 问题反馈 ---------- */
.page-contact .support-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(24px, 4vw, 44px);
}

.page-contact .support-main p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog);
  max-width: 58ch;
}

.page-contact .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-contact .support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-contact .support-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .support-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .support-list .mono {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding-top: 2px;
}

.page-contact .support-list strong {
  display: block;
  font-size: 15px;
  color: var(--mist);
}

.page-contact .support-list p {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 内容中心坐标 ---------- */
.page-contact .location-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

.page-contact .location-text p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog);
  max-width: 56ch;
}

.page-contact .coord-grid {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .coord-grid li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 16px;
  padding: 12px 14px;
  background: var(--pine);
}

.page-contact .coord-key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-contact .coord-val {
  font-size: 14px;
  color: var(--mist);
}

.page-contact .location-tip {
  padding-left: 14px;
  border-left: 2px solid var(--lime);
  color: var(--sage) !important;
  font-size: 14px !important;
}

.page-contact .location-figure {
  position: relative;
  margin: 0;
  background: linear-gradient(160deg, var(--pine), #04120F);
}

/* ---------- 快速索引 ---------- */
.page-contact .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .quick-list li {
  border-bottom: 1px solid var(--line);
}

.page-contact .quick-list a {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 4px;
  text-decoration: none;
  transition: background 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-contact .quick-list a:hover,
.page-contact .quick-list a:focus-visible {
  background: rgba(184, 255, 61, 0.06);
  padding-left: 12px;
}

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

.page-contact .quick-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .quick-list a:hover .quick-title {
  color: var(--lime);
}

.page-contact .quick-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .coord-index {
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--line);
  }

  .page-contact .coord-index li {
    border-top: 0;
    border-right: 1px solid var(--line);
  }

  .page-contact .coord-index li:last-child {
    border-right: 0;
  }

  .page-contact .coord-index a {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 14px 18px;
    height: 100%;
  }

  .page-contact .coord-text {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-contact .type-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .coord-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .quick-list a {
    grid-template-columns: minmax(140px, 0.4fr) 1fr;
    align-items: baseline;
    gap: 4px 24px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero .display {
    max-width: 18ch;
  }

  .page-contact .channel-strip {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

  .page-contact .process-layout {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-contact .process-figure {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    min-height: 380px;
  }

  .page-contact .support-panel {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-contact .location-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .type-card,
  .page-contact .coord-index a,
  .page-contact .route-node,
  .page-contact .quick-list a {
    transition: none;
  }

  .page-contact .type-card:hover,
  .page-contact .type-card:focus-within {
    transform: none;
  }
}