.page-contact {
  --contact-border: rgba(232, 236, 241, 0.14);
  --contact-gold-line: rgba(255, 215, 0, 0.35);
  --contact-plate: rgba(27, 58, 107, 0.55);
  --contact-orange-tint: rgba(255, 107, 0, 0.12);
  font-family: var(--font-body);
  color: var(--off-white);
  overflow-x: hidden;
}

.page-contact .exhibit-head {
  margin-bottom: 18px;
}

/* ===== 首屏框景 ===== */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(2.2rem, 5vw, 4rem) 0 2.6rem;
  border-bottom: 1px solid var(--contact-border);
  background:
    radial-gradient(circle at 82% 18%, rgba(27, 58, 107, 0.55), transparent 38%),
    radial-gradient(circle at 12% 72%, rgba(255, 215, 0, 0.06), transparent 32%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--orange) 0 36px,
    transparent 36px 48px,
    var(--gold) 48px 84px,
    transparent 84px 96px
  );
  opacity: 0.9;
}

.page-contact .contact-hero__inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: 18px;
  font-size: 0.82rem;
}

.page-contact .contact-hero__topline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .contact-hero__topline::after {
  content: "";
  flex: 1;
  max-width: 260px;
  height: 1px;
  background: linear-gradient(90deg, var(--contact-gold-line), transparent);
}

.page-contact .contact-hero .page-title {
  margin-bottom: 14px;
}

.page-contact .contact-hero .page-subtitle {
  display: block;
  margin-top: 4px;
  color: var(--gold);
}

.page-contact .contact-hero .lead {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.75;
}

.page-contact .contact-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px dashed var(--contact-border);
}

.page-contact .contact-hero__index a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--contact-border);
  background: rgba(27, 58, 107, 0.35);
  color: var(--off-white);
  font-size: 0.85rem;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-contact .contact-hero__index a:hover,
.page-contact .contact-hero__index a:focus-visible {
  border-color: var(--orange);
  background: var(--contact-orange-tint);
}

.page-contact .contact-hero__index a span {
  font-family: var(--font-display);
  font-size: 0.92em;
  color: var(--gold);
}

/* ===== 双栏主体 ===== */
.page-contact .contact-section {
  padding: clamp(2rem, 5vw, 3.2rem) clamp(1rem, 4vw, 3rem);
}

.page-contact .contact-duo {
  display: grid;
  grid-template-columns: 1fr;
  position: relative;
  max-width: var(--container-w);
  margin: 0 auto;
}

.page-contact .contact-duo .contact-section + .contact-section {
  border-top: 1px solid var(--contact-border);
}

@media (min-width: 920px) {
  .page-contact .contact-duo {
    grid-template-columns: minmax(300px, 36%) 1fr;
    align-items: stretch;
  }

  .page-contact .contact-duo .contact-section + .contact-section {
    border-top: 0;
    border-left: 1px solid var(--contact-border);
  }

  .page-contact .contact-channels {
    position: relative;
    overflow: hidden;
  }

  .page-contact .contact-channels::before {
    content: "";
    position: absolute;
    top: 0;
    right: -1px;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold), var(--orange) 58%, transparent 100%);
    transform: rotate(12deg);
    transform-origin: top right;
    pointer-events: none;
    z-index: 2;
  }
}

/* ===== 官方联系渠道 ===== */
.page-contact .contact-channels {
  background:
    linear-gradient(165deg, rgba(255, 215, 0, 0.06), transparent 26%),
    linear-gradient(10deg, transparent 82%, var(--contact-orange-tint));
}

.page-contact .contact-channels__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 16px;
  background: linear-gradient(150deg, rgba(27, 58, 107, 0.55), rgba(5, 13, 30, 0.25));
  border: 1px solid var(--contact-border);
  border-left: 3px solid var(--orange);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-contact .contact-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 0, 0.7);
  background: rgba(27, 58, 107, 0.8);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 12px;
  height: 12px;
  background: linear-gradient(135deg, transparent 50%, var(--orange) 50%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.page-contact .contact-card:hover::after {
  opacity: 1;
}

.page-contact .contact-card__icon {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  border: 1px solid var(--contact-gold-line);
  background: rgba(255, 215, 0, 0.08);
  border-radius: 2px;
}

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

.page-contact .contact-card__title {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--off-white);
}

.page-contact .contact-card__desc {
  margin: 0 0 6px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--slate);
}

.page-contact .contact-card__value {
  display: inline-block;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--off-white);
  text-decoration: none;
  word-break: break-all;
  line-height: 1.5;
}

.page-contact .contact-card__value:hover,
.page-contact .contact-card__value:focus-visible {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .contact-channels__media {
  margin-top: 18px;
  border: 1px solid var(--contact-border);
  background: rgba(27, 58, 107, 0.25);
}

.page-contact .contact-channels__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.04);
}

/* ===== 业务合作与服务 ===== */
.page-contact .contact-partnership {
  background:
    radial-gradient(circle at 92% 12%, rgba(255, 107, 0, 0.08), transparent 36%),
    rgba(5, 13, 30, 0.12);
}

.page-contact .contact-partnership__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 26px;
}

@media (min-width: 560px) {
  .page-contact .contact-partnership__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.page-contact .contact-need {
  position: relative;
  padding: 22px 18px 18px;
  border: 1px solid var(--contact-border);
  background: linear-gradient(145deg, rgba(27, 58, 107, 0.32), rgba(5, 13, 30, 0.4));
  border-radius: 2px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-contact .contact-need:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 0, 0.55);
  box-shadow: 4px 4px 0 rgba(255, 107, 0, 0.14);
}

.page-contact .contact-need__index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
}

.page-contact .contact-need h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--off-white);
  letter-spacing: 0.01em;
}

.page-contact .contact-need p {
  margin: 0 0 12px;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-contact .contact-need__to {
  display: block;
  width: 100%;
  padding-top: 10px;
  border-top: 1px dashed rgba(255, 107, 0, 0.35);
  font-size: 0.8rem;
  color: var(--orange);
  word-break: break-all;
}

/* ===== 客服支持时间 ===== */
.page-contact .contact-support {
  padding: clamp(2rem, 5vw, 3.2rem) 0;
  border-top: 1px solid var(--contact-border);
  background: linear-gradient(180deg, transparent, rgba(27, 58, 107, 0.18));
}

.page-contact .contact-support .container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

.page-contact .contact-support__timeline {
  margin-top: 30px;
  border-top: 1px solid var(--contact-border);
}

.page-contact .contact-support__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 20px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--contact-border);
}

@media (min-width: 640px) {
  .page-contact .contact-support__item {
    grid-template-columns: 130px 1fr auto;
    align-items: baseline;
  }
}

.page-contact .contact-support__channel {
  font-family: var(--font-display);
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-support__address {
  font-size: 0.95rem;
  color: var(--off-white);
  word-break: break-all;
}

.page-contact .contact-support__time {
  font-size: 0.84rem;
  color: var(--slate);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
}

@media (max-width: 639px) {
  .page-contact .contact-support__time {
    border-left: 0;
    border-top: 1px dashed var(--contact-border);
    padding-left: 0;
    padding-top: 6px;
  }
}

.page-contact .contact-support__details {
  margin-top: 24px;
  border: 1px solid var(--contact-border);
  border-left: 3px solid var(--gold);
  border-radius: 2px;
  background: rgba(5, 13, 30, 0.32);
}

.page-contact .contact-support__details summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--off-white);
  list-style: none;
}

.page-contact .contact-support__details summary::-webkit-details-marker {
  display: none;
}

.page-contact .contact-support__details summary::after {
  content: "＋";
  font-size: 1.2rem;
  line-height: 1;
  color: var(--orange);
}

.page-contact .contact-support__details[open] summary::after {
  content: "－";
}

.page-contact .contact-support__details ul {
  margin: 0;
  padding: 2px 20px 18px;
  display: grid;
  gap: 8px;
}

.page-contact .contact-support__details li {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--slate);
  padding-left: 16px;
  position: relative;
}

.page-contact .contact-support__details li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--gold);
}

.page-contact .contact-support__details strong {
  color: var(--off-white);
}

.page-contact .contact-support__note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--slate);
  border-left: 3px solid var(--gold);
  padding-left: 12px;
  line-height: 1.6;
}

/* ===== 到访与来信 ===== */
.page-contact .contact-address {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-top: 1px solid var(--contact-border);
  background:
    radial-gradient(circle at 8% 85%, rgba(255, 215, 0, 0.06), transparent 30%),
    linear-gradient(180deg, rgba(27, 58, 107, 0.18), transparent 60%);
}

.page-contact .contact-address__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}

@media (min-width: 920px) {
  .page-contact .contact-address__layout {
    grid-template-columns: minmax(280px, 36%) 1fr;
    align-items: center;
  }
}

.page-contact .contact-address__card {
  position: relative;
  display: grid;
  gap: 8px;
  margin: 26px 0 18px;
  padding: 22px 20px;
  border: 1px solid var(--contact-border);
  border-left: 3px solid var(--gold);
  background: var(--contact-plate);
  font-style: normal;
  border-radius: 2px;
}

.page-contact .contact-address__card::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 18px;
  height: 18px;
  background: var(--orange);
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
  opacity: 0.8;
}

.page-contact .contact-address__label {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-address__value {
  font-family: var(--font-display);
  font-size: 1.32rem;
  line-height: 1.35;
  color: var(--off-white);
  word-break: break-all;
}

.page-contact .contact-address__note {
  border-left: 3px solid var(--orange);
  padding: 4px 0 4px 12px;
  margin-bottom: 20px;
}

.page-contact .contact-address__note p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .contact-address__media {
  border: 1px solid var(--contact-border);
  background: linear-gradient(145deg, rgba(27, 58, 107, 0.3), rgba(5, 13, 30, 0.4));
  border-radius: 2px;
  overflow: hidden;
}

.page-contact .contact-address__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

@media (min-width: 920px) {
  .page-contact .contact-address__media {
    margin-left: 12px;
  }
}

/* ===== 底部延伸入口 ===== */
.page-contact .contact-further {
  border-top: 1px solid var(--contact-border);
  padding: 34px 0 48px;
  background: rgba(5, 13, 30, 0.35);
}

.page-contact .contact-further__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 640px) {
  .page-contact .contact-further__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-contact .contact-further__link {
  display: grid;
  gap: 6px;
  padding: 18px 16px;
  border: 1px solid var(--contact-border);
  border-radius: 2px;
  background: rgba(27, 58, 107, 0.3);
  color: var(--off-white);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-contact .contact-further__link:hover,
.page-contact .contact-further__link:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 107, 0, 0.09);
  transform: translateY(-2px);
}

.page-contact .contact-further__link span {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-contact .contact-further__link small {
  color: var(--slate);
  font-size: 0.85rem;
  line-height: 1.55;
}