.page-contact {
  --contact-gap: clamp(20px, 3vw, 40px);
  --contact-panel: #0F2E28;
  --contact-deep: #0B1626;
  --contact-ink: #071A16;
  padding: 0 clamp(16px, 4vw, 40px) clamp(96px, 12vw, 120px);
  max-width: var(--maxw);
  margin: 0 auto;
  color: var(--haze);
  font-family: var(--font-sans);
  background:
    linear-gradient(115deg, rgba(43, 242, 210, .05) 0%, transparent 42%),
    linear-gradient(295deg, rgba(255, 46, 138, .04) 0%, transparent 38%);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: 0;
  padding: clamp(18px, 3vw, 28px) 0 0;
  font-size: var(--step-13);
  letter-spacing: .08em;
  color: var(--slate);
}

.page-contact .breadcrumb__item {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(43, 242, 210, .45);
}

.page-contact .breadcrumb__link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .breadcrumb__link:hover,
.page-contact .breadcrumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-lede {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  align-items: end;
  padding: clamp(28px, 5vw, 52px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-lede__copy h1 {
  margin: .5rem 0 0;
}

.page-contact .contact-lede__lede {
  margin: 1.1rem 0 0;
  max-width: 36ch;
  font-size: var(--step-16);
  line-height: 1.8;
  color: var(--haze);
}

.page-contact .contact-lede__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .contact-lede__fact {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: 1rem 1.05rem;
  background: var(--contact-ink);
  font-size: var(--step-13);
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-contact .contact-lede__fact .num {
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  color: var(--gold);
  line-height: 1.2;
}

.page-contact .contact-lede__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--contact-deep);
  box-shadow: 0 4px 0 rgba(0, 0, 0, .5), 0 22px 48px rgba(0, 0, 0, .42);
}

.page-contact .contact-lede__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(43, 242, 210, .16), transparent 46%, rgba(246, 196, 83, .12));
  pointer-events: none;
}

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

/* ---------- 通用块头 ---------- */
.page-contact .section-head {
  max-width: 60ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .section-head__note {
  margin: .75rem 0 0;
  font-size: var(--step-16);
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .section {
  padding: clamp(40px, 6vw, 72px) 0;
  border-bottom: 1px solid var(--line);
}

/* ---------- 场景选择 ---------- */
.page-contact .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-bottom: clamp(20px, 3vw, 30px);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-contact .tab {
  min-height: 44px;
  padding: .6rem 1.15rem;
  font: inherit;
  font-size: var(--step-13);
  letter-spacing: .07em;
  color: var(--slate);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .tab:hover {
  color: var(--mint);
  border-color: var(--line-strong);
}

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

.page-contact .tab[aria-selected="true"] {
  color: var(--contact-ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-contact .tabpanel {
  padding-left: clamp(16px, 3vw, 28px);
  border-left: 2px solid var(--line-strong);
}

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

.page-contact .tabpanel__lead {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-16);
  line-height: 1.85;
  color: var(--haze);
}

.page-contact .tabpanel .btn {
  margin-top: 1.35rem;
}

/* ---------- 清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}

.page-contact .checklist li {
  position: relative;
  padding-left: 1.4rem;
  font-size: var(--step-16);
  line-height: 1.75;
  color: var(--haze);
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .checklist--tight {
  margin-top: .9rem;
  gap: .5rem;
}

.page-contact .checklist--tight li {
  font-size: var(--step-13);
  color: var(--slate);
  line-height: 1.7;
}

.page-contact .checklist--tight li::before {
  background: var(--gold);
}

/* ---------- 分屏联系台 ---------- */
.page-contact .contact-desk {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding: clamp(40px, 6vw, 72px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 22px);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(20px, 2.8vw, 26px);
  border-left: 2px solid var(--cyan);
}

.page-contact .channel-card--tel {
  border-left-color: var(--gold);
}

.page-contact .channel-card--post {
  border-left-color: var(--magenta);
}

.page-contact .channel-card h3 {
  margin: .35rem 0 0;
}

.page-contact .channel-card__value {
  margin: .6rem 0 .65rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.1vw, 1.12rem);
  line-height: 1.45;
  letter-spacing: .01em;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .channel-card--tel .channel-card__value {
  font-size: clamp(1.4rem, 3.6vw, 1.85rem);
  color: var(--gold);
}

.page-contact .channel-card__value--addr {
  font-size: var(--step-16);
  line-height: 1.7;
  color: var(--haze);
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: var(--step-13);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 对照表 ---------- */
.page-contact .route-table {
  width: 100%;
  margin-top: clamp(24px, 4vw, 34px);
  border-collapse: collapse;
  font-size: var(--step-16);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .route-table caption {
  text-align: left;
  padding: 0 0 .8rem;
  font-size: var(--step-13);
  letter-spacing: .08em;
  color: var(--slate);
}

.page-contact .route-table th,
.page-contact .route-table td {
  text-align: left;
  padding: .85rem 1.05rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.65;
}

.page-contact .route-table thead th {
  background: var(--contact-deep);
  color: var(--mint);
  font-size: var(--step-13);
  font-weight: 500;
  letter-spacing: .07em;
}

.page-contact .route-table tbody th {
  font-weight: 400;
  color: var(--haze);
}

.page-contact .route-table tbody td {
  color: var(--slate);
}

.page-contact .route-table tbody tr {
  transition: background-color var(--dur) var(--ease);
}

.page-contact .route-table tbody tr:hover {
  background: rgba(43, 242, 210, .06);
}

.page-contact .route-table tbody tr:last-child th,
.page-contact .route-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 右栏 ---------- */
.page-contact .contact-desk__rail {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.4vw, 24px);
}

.page-contact .rail-block {
  padding: clamp(20px, 2.8vw, 28px);
  background: var(--contact-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 3px 0 rgba(0, 0, 0, .45);
}

.page-contact .rail-block--post {
  background: var(--contact-panel);
  border-color: var(--line-strong);
}

.page-contact .rail-block h2 {
  margin: .4rem 0 1.15rem;
}

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

.page-contact .timeline__item {
  position: relative;
  padding-left: 1.5rem;
  padding-bottom: 1.15rem;
  border-left: 1px solid var(--line);
}

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

.page-contact .timeline__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: .3rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43, 242, 210, .14);
}

.page-contact .timeline__item--alert::before {
  background: var(--magenta);
  box-shadow: 0 0 0 3px rgba(255, 46, 138, .18);
}

.page-contact .timeline__date {
  margin: 0 0 .25rem;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-contact .timeline__item--alert .timeline__date {
  color: var(--magenta);
}

.page-contact .timeline__item h3 {
  margin: 0 0 .3rem;
}

.page-contact .timeline__item p:last-child {
  margin: 0;
  font-size: var(--step-13);
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .post-address {
  display: grid;
  gap: .2rem;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: var(--step-16);
  line-height: 1.7;
  color: var(--haze);
  padding: .85rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(7, 26, 22, .6);
}

/* ---------- 反馈说明 ---------- */
.page-contact .contact-feedback__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .contact-feedback__copy .prose {
  margin: 1rem 0 0;
  font-size: var(--step-16);
  line-height: 1.85;
  color: var(--haze);
}

.page-contact .feedback-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .feedback-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.05rem 1.15rem;
  background: var(--contact-ink);
}

.page-contact .feedback-steps li > div {
  min-width: 0;
}

.page-contact .feedback-steps__idx {
  padding-top: .15rem;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .feedback-steps h3 {
  margin: 0 0 .25rem;
}

.page-contact .feedback-steps p {
  margin: 0;
  font-size: var(--step-13);
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .contact-feedback__hint {
  margin: 1.25rem 0 0;
  padding: .9rem 1.1rem;
  border-left: 2px solid var(--magenta);
  background: rgba(255, 46, 138, .07);
  font-size: var(--step-16);
  line-height: 1.75;
  color: var(--haze);
}

.page-contact .contact-feedback__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--contact-deep);
  box-shadow: 0 4px 0 rgba(0, 0, 0, .5);
}

.page-contact .contact-feedback__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

/* ---------- 合作 ---------- */
.page-contact .contact-partner {
  border-bottom: 0;
}

.page-contact .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 22px);
}

.page-contact .partner-card {
  padding: clamp(18px, 2.6vw, 24px);
  border-top: 2px solid var(--line-strong);
}

.page-contact .partner-card:nth-child(2) {
  border-top-color: var(--gold);
}

.page-contact .partner-card:nth-child(3) {
  border-top-color: var(--magenta);
}

.page-contact .partner-card h3 {
  margin: .35rem 0 .6rem;
}

.page-contact .partner-card p {
  margin: 0;
  font-size: var(--step-16);
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .partner-materials {
  padding: clamp(20px, 3vw, 28px);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgba(43, 242, 210, .08), transparent 62%);
}

.page-contact .partner-materials h3 {
  margin: 0;
}

.page-contact .partner-materials__mail {
  margin: 1.15rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  line-height: 1.8;
  letter-spacing: .02em;
  color: var(--gold);
  word-break: break-word;
}

/* ---------- 底部固定条 ---------- */
.page-contact .thumb-bar {
  letter-spacing: .04em;
}

/* ---------- 响应式 ---------- */
@media (max-width: 639px) {
  .page-contact .contact-lede__facts {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .contact-lede__fact {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
  }

  .page-contact .route-table thead {
    display: none;
  }

  .page-contact .route-table,
  .page-contact .route-table tbody,
  .page-contact .route-table tr,
  .page-contact .route-table th,
  .page-contact .route-table td {
    display: block;
    width: 100%;
  }

  .page-contact .route-table tr {
    padding: .95rem 1.05rem;
    border-bottom: 1px solid var(--line);
  }

  .page-contact .route-table tr:last-child {
    border-bottom: 0;
  }

  .page-contact .route-table th,
  .page-contact .route-table td {
    padding: .18rem 0;
    border: 0;
  }

  .page-contact .route-table tbody th {
    font-weight: 700;
    color: var(--mint);
  }

  .page-contact .route-table td::before {
    content: attr(data-label) " / ";
    font-size: var(--step-13);
    letter-spacing: .06em;
    color: rgba(124, 140, 136, .9);
  }

  .page-contact .contact-feedback__media img {
    height: 320px;
    object-fit: cover;
  }
}

@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--post {
    grid-column: 1 / -1;
  }

  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .partner-materials {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-lede {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-contact .contact-feedback__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-desk {
    grid-template-columns: minmax(0, 1fr) minmax(0, 352px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tab,
  .page-contact .route-table tbody tr,
  .page-contact .breadcrumb__link {
    transition: none;
  }
}