.page-contact {
  background:
    repeating-linear-gradient(135deg, transparent 0 14px, rgba(0, 229, 255, 0.028) 14px 15px),
    var(--c-base);
  color: var(--c-text);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-contact .container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ---------- Hero ---------- */
.contact-hero {
  position: relative;
  padding: 28px 0 64px;
  overflow: hidden;
}

.contact-breadcrumb {
  padding-top: 20px;
}

.contact-hero__signal {
  position: absolute;
  top: 10px;
  right: -120px;
  width: 360px;
  height: 360px;
  pointer-events: none;
}

.contact-hero__ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: 50%;
}

.contact-hero__ring--mid {
  transform: scale(1.65);
  opacity: 0.5;
}

.contact-hero__ring--far {
  transform: scale(2.5);
  opacity: 0.2;
}

.contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 48px;
  position: relative;
  z-index: 1;
}

.contact-hero__intro {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-hero__eyebrow {
  display: flex;
  align-items: center;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
  text-transform: uppercase;
}

.contact-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 10px;
  vertical-align: middle;
}

.contact-hero__dot--lime {
  background: var(--c-success);
  box-shadow: 0 0 0 3px rgba(61, 214, 140, 0.18);
}

.contact-hero__dot--orange {
  background: var(--c-orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.2);
}

.contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.1;
  margin: 0;
}

.contact-hero__desc {
  font-size: 1rem;
  color: var(--c-text-dim);
  max-width: 32em;
  margin: 0;
}

.contact-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 420px;
}

.contact-hero__meta-item {
  border: 1px solid var(--c-edge);
  border-left: 2px solid var(--c-cyan);
  background: rgba(19, 42, 74, 0.55);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.contact-hero__meta-item:hover {
  border-color: var(--c-cyan);
  transform: translateX(2px);
}

.contact-hero__meta-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.contact-hero__meta-value {
  display: block;
  font-family: var(--font-data);
  font-size: 1.125rem;
  color: var(--c-text);
}

.contact-hero__right {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-hero__board {
  position: relative;
  background: var(--c-glass);
  border: 1px solid var(--c-edge);
  border-radius: 12px;
  padding: 26px 22px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.24);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.contact-hero__board:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.contact-hero__board::before,
.contact-hero__board::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--c-cyan);
  border-style: solid;
}

.contact-hero__board::before {
  top: -5px;
  left: -5px;
  border-width: 2px 0 0 2px;
}

.contact-hero__board::after {
  bottom: -5px;
  right: -5px;
  border-width: 0 2px 2px 0;
}

.contact-hero__board-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-hero__board-label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--c-text-dim);
  text-transform: uppercase;
}

.contact-hero__board-status {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  color: var(--c-amber);
}

.contact-hero__phone {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-text);
  text-decoration: none;
  margin-top: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-edge);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.contact-hero__phone:hover {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.contact-hero__mail {
  font-family: var(--font-data);
  font-size: 0.9375rem;
  color: var(--c-text-dim);
  margin: 16px 0 20px;
  word-break: break-all;
}

.contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-hero__media {
  width: 100%;
  max-width: 400px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--c-edge);
}

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

/* ---------- 联系渠道 ---------- */
.contact-channels {
  padding: 64px 0;
  position: relative;
}

.contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}

.contact-card {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-edge);
  border-radius: 10px;
  padding: 30px 26px;
  overflow: hidden;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--ease);
}

.contact-card:hover {
  transform: translateY(-2px);
  border-color: var(--c-cyan);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.contact-card:hover::before {
  transform: scaleX(1);
}

.contact-card__icon {
  display: inline-flex;
  width: 56px;
  height: 56px;
  border: 1px solid var(--c-edge);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.contact-card:hover .contact-card__icon {
  border-color: var(--c-cyan);
  background: rgba(0, 229, 255, 0.08);
}

.contact-card__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

.contact-card__text {
  font-size: 0.90625rem;
  color: var(--c-text-dim);
  margin: 0 0 20px;
}

.contact-card__cta {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.875rem;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.3);
  padding-bottom: 2px;
  word-break: break-all;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.contact-card__cta:hover {
  color: var(--c-text);
  border-color: var(--c-text);
}

/* ---------- 通讯地址 ---------- */
.contact-address {
  padding: 64px 0;
  border-top: 1px solid var(--c-edge);
  border-bottom: 1px solid var(--c-edge);
  background: linear-gradient(135deg, rgba(19, 42, 74, 0.4), rgba(11, 31, 58, 0.6));
}

.contact-address__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.contact-address__media {
  order: 2;
}

.contact-address__media-frame {
  width: 100%;
  max-width: 200px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--c-edge);
}

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

.contact-address__content {
  position: relative;
  padding: 28px 0;
  overflow: hidden;
}

.contact-address__content::after {
  content: "HAIKOU";
  position: absolute;
  right: -0.15em;
  bottom: -0.3em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 6rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 255, 0.14);
  pointer-events: none;
  z-index: 0;
}

.contact-address__content .section-head {
  position: relative;
  z-index: 1;
}

.contact-address__line {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-text);
  margin: 10px 0 12px;
}

.contact-address__note {
  position: relative;
  z-index: 1;
  color: var(--c-text-dim);
  font-size: 0.9375rem;
  max-width: 34em;
  margin: 0 0 16px;
}

.contact-address__link {
  position: relative;
  z-index: 1;
  display: inline-block;
  font-size: 0.875rem;
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s var(--ease);
}

.contact-address__link:hover {
  color: var(--c-text);
}

/* ---------- 发送消息 ---------- */
.contact-message {
  padding: 64px 0;
}

.contact-message__board {
  margin-top: 36px;
  background:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    var(--c-panel);
  background-size: 24px 24px;
  border: 1px solid var(--c-edge);
  border-radius: 12px;
  padding: 28px 22px;
  transition: border-color 0.2s var(--ease);
}

.contact-message__board:hover {
  border-color: var(--c-cyan);
}

.contact-message__mails {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.contact-message__mail {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: rgba(11, 31, 58, 0.6);
  border: 1px solid var(--c-edge);
  border-radius: 8px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.contact-message__mail:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.contact-message__mail-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--c-orange);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-message__mail a {
  font-family: var(--font-data);
  font-size: 0.9375rem;
  color: var(--c-text);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s var(--ease);
}

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

.contact-message__foot {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--c-edge);
}

.contact-message__hint {
  font-size: 0.875rem;
  color: var(--c-text-dim);
  margin: 0;
}

/* ---------- 数据功能反馈 ---------- */
.contact-feedback {
  padding: 64px 0 72px;
  border-top: 1px solid var(--c-edge);
  background: rgba(19, 42, 74, 0.32);
}

.contact-feedback__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}

.contact-feedback__step {
  position: relative;
  padding: 28px 24px;
  background: rgba(19, 42, 74, 0.72);
  border: 1px solid var(--c-edge);
  border-radius: 10px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.contact-feedback__step:hover {
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.contact-feedback__num {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-orange);
  margin-bottom: 10px;
}

.contact-feedback__step-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

.contact-feedback__step p {
  font-size: 0.90625rem;
  color: var(--c-text-dim);
  margin: 0;
}

.contact-feedback__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 32px;
}

.contact-feedback__links a {
  font-size: 0.9375rem;
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s var(--ease);
}

.contact-feedback__links a:hover {
  color: var(--c-text);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .contact-hero {
    padding: 28px 0 72px;
  }

  .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

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

  .contact-hero__media {
    max-width: 100%;
  }

  .contact-channels__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .contact-address__grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
  }

  .contact-address__media {
    order: 1;
  }

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

  .contact-message__foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .contact-message__hint {
    max-width: 34em;
  }
}

@media (min-width: 900px) {
  .contact-channels__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-feedback__steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 40px;
  }

  .contact-feedback__step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -40px;
    top: 50%;
    width: 40px;
    height: 1px;
    background: var(--c-cyan);
    opacity: 0.35;
    pointer-events: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }
}