.page-contact {
  --pc-gap: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: var(--line);
  background:
    radial-gradient(760px 340px at 84% -8%, rgba(0, 229, 255, 0.16), transparent 68%),
    radial-gradient(520px 300px at 4% 106%, rgba(255, 107, 26, 0.10), transparent 70%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 58, 95, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 95, 0.55) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.32;
  pointer-events: none;
}

.page-contact .contact-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-titan);
  padding-top: clamp(18px, 3vw, 30px);
}

.page-contact .breadcrumbs a {
  color: var(--c-ice);
  text-decoration: none;
}

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

.page-contact .contact-hero__head {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
  padding: clamp(16px, 2.6vw, 26px) 0 clamp(20px, 3.2vw, 34px);
  border-bottom: var(--line);
}

.page-contact .contact-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-pure);
  max-width: 22ch;
}

.page-contact .contact-hero__intro {
  display: grid;
  gap: 14px;
  align-content: end;
}

.page-contact .contact-hero__intro .lead {
  margin: 0;
  color: var(--c-ice);
  max-width: 52ch;
}

.page-contact .contact-hero__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-titan);
}

.page-contact .contact-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0;
  padding: clamp(14px, 2.2vw, 20px) 0;
  list-style: none;
  border-bottom: var(--line);
}

.page-contact .contact-hero__index .index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--c-white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-contact .contact-hero__index .index-link:hover,
.page-contact .contact-hero__index .index-link.is-current {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.page-contact .contact-hero__index .index-list__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-orange);
  letter-spacing: 0.08em;
}

/* ---------- 首屏信息板 ---------- */
.page-contact .contact-hero__board {
  display: grid;
  gap: var(--pc-gap);
  padding: clamp(22px, 3.4vw, 42px) 0 clamp(28px, 4vw, 52px);
}

.page-contact .contact-hero__media {
  margin: 0;
  width: 100%;
  min-height: 220px;
}

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

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(18px, 2.6vw, 28px);
  border: var(--line);
  border-top: 2px solid var(--c-orange);
  background: linear-gradient(158deg, rgba(0, 229, 255, 0.10), rgba(5, 11, 24, 0.92) 46%);
}

.page-contact .contact-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: var(--line);
}

.page-contact .contact-card .version-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-titan);
}

.page-contact .contact-card__list {
  display: grid;
  gap: 16px;
  margin: 0;
}

.page-contact .contact-card__row {
  position: relative;
  display: grid;
  gap: 5px;
  padding-left: 14px;
}

.page-contact .contact-card__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 2px;
  height: calc(100% - 10px);
  background: var(--c-cyan);
}

.page-contact .contact-card__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-titan);
}

.page-contact .contact-card__row dd {
  margin: 0;
  font-size: clamp(15px, 1.8vw, 19px);
  line-height: 1.6;
  color: var(--c-pure);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__hint {
  margin: 0;
  padding-top: 14px;
  border-top: var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-titan);
}

/* ---------- 联系渠道表 ---------- */
.page-contact .contact-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .contact-table thead {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

.page-contact .contact-table tr {
  padding: 18px 0;
  border-bottom: var(--line);
}

.page-contact .contact-table th,
.page-contact .contact-table td {
  text-align: left;
  padding: 4px 0;
  border: 0;
}

.page-contact .contact-table tbody th {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-white);
}

.page-contact .contact-table td {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-ice);
}

.page-contact .contact-table td::before {
  content: attr(data-label);
  display: inline-block;
  min-width: 76px;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-titan);
  vertical-align: 1px;
}

/* ---------- 响应节奏 ---------- */
.page-contact .response-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 34px);
  background: var(--c-grid);
  border: var(--line);
}

.page-contact .response-cell {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--c-deep-2);
}

.page-contact .response-cell .stat__value {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.page-contact .response-cell .stat__label {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-titan);
}

.page-contact .response-notes {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .response-notes .note {
  margin: 0;
  max-width: 62ch;
}

.page-contact .response-notes a,
.page-contact .contact-footline a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
}

.page-contact .response-notes a:hover,
.page-contact .contact-footline a:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .prepare-grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .accordion__item {
  border-bottom: var(--line);
}

.page-contact .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 600;
  color: var(--c-white);
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
}

.page-contact .accordion__mark {
  font-family: var(--font-mono);
  color: var(--c-orange);
  font-size: 18px;
  line-height: 1;
}

.page-contact .accordion__body {
  padding: 0 0 20px;
  color: var(--c-ice);
  font-size: 15px;
  line-height: 1.8;
  max-width: 60ch;
}

.page-contact .accordion__body p {
  margin: 0;
}

.page-contact .prepare-media {
  margin: 0;
  width: 100%;
  aspect-ratio: 3 / 2;
  border: var(--line);
}

/* ---------- 支持范围 ---------- */
.page-contact .support-grid {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .support-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--line);
  border-top: 2px solid var(--c-cyan);
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.07), transparent 62%);
}

.page-contact .support-card__num {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
}

.page-contact .support-card h3 {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--c-pure);
}

.page-contact .support-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-titan);
}

.page-contact .support-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  padding-bottom: 2px;
}

.page-contact .support-card__link:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 站点信息 ---------- */
.page-contact .site-facts {
  display: grid;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--c-grid);
  border: var(--line);
}

.page-contact .site-facts__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: space-between;
  padding: 15px 18px;
  background: var(--c-deep);
}

.page-contact .site-facts__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-titan);
  min-width: 96px;
}

.page-contact .site-facts__val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-white);
}

.page-contact .contact-footline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 18px;
  border-top: var(--line);
}

.page-contact .contact-footline p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  max-width: 62ch;
}

.page-contact .totop {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange) !important;
  text-decoration: none;
  border-bottom: 0 !important;
  white-space: nowrap;
}

.page-contact .totop:hover {
  color: var(--c-cyan) !important;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .response-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-contact .contact-table {
    display: table;
    table-layout: fixed;
  }

  .page-contact .contact-table thead {
    display: table-header-group;
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip: auto;
  }

  .page-contact .contact-table tbody {
    display: table-row-group;
  }

  .page-contact .contact-table tr {
    display: table-row;
    padding: 0;
  }

  .page-contact .contact-table th,
  .page-contact .contact-table td {
    display: table-cell;
    padding: 18px 22px 18px 0;
    border-bottom: var(--line);
    vertical-align: top;
  }

  .page-contact .contact-table th:last-child,
  .page-contact .contact-table td:last-child {
    padding-right: 0;
  }

  .page-contact .contact-table td {
    font-size: 14px;
    color: var(--c-ice);
  }

  .page-contact .contact-table td::before {
    content: none;
  }

  .page-contact .contact-table thead th {
    padding-top: 0;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    color: var(--c-ice);
    border-bottom: 1px solid var(--c-cyan);
    text-transform: uppercase;
  }

  .page-contact .contact-table thead th:nth-child(1) {
    width: 15%;
  }

  .page-contact .contact-table thead th:nth-child(2) {
    width: 30%;
  }

  .page-contact .contact-table thead th:nth-child(3) {
    width: 31%;
  }

  .page-contact .contact-table thead th:nth-child(4) {
    width: 24%;
  }

  .page-contact .contact-table tbody tr:hover {
    background: rgba(0, 229, 255, 0.05);
  }

  .page-contact .response-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .site-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
    column-gap: clamp(30px, 5vw, 72px);
  }

  .page-contact .contact-hero__board {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
    align-items: stretch;
  }

  .page-contact .contact-hero__media {
    min-height: 320px;
  }

  .page-contact .contact-card {
    justify-content: space-between;
  }
}

@media (min-width: 960px) {
  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .support-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .index-link,
  .page-contact .support-card__link,
  .page-contact .totop {
    transition: none;
  }
}