/* ===== 联系页专属样式 ===== */

.page-contact {
  --contact-glow: rgba(56, 255, 154, 0.12);
  --contact-alert-glow: rgba(255, 51, 85, 0.16);
  background-color: var(--bg-deep);
  color: var(--text);
}

/* 首屏：通信主题抽象背景 */
.contact-hero {
  position: relative;
  padding: 28px 0 52px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 520px 240px at 92% -4%, var(--contact-glow), transparent 68%),
    radial-gradient(ellipse 420px 240px at 2% 110%, rgba(14, 42, 71, 0.9), transparent 64%),
    var(--bg-deep);
}

.contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 42px, rgba(56, 255, 154, 0.028) 42px 43px);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: 40px;
}

.contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  align-items: center;
}

.contact-hero__content h1 {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero__content .lead {
  max-width: 560px;
  margin-bottom: 22px;
}

.contact-hero__tagline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
}

.contact-hero__tagline::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(56, 255, 154, 0.14), 0 0 18px rgba(56, 255, 154, 0.5);
}

.contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-hero__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 28px 56px rgba(0, 0, 0, 0.36);
}

.contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(120deg, rgba(56, 255, 154, 0.07) 0%, transparent 34%, transparent 66%, rgba(255, 51, 85, 0.08) 100%);
  pointer-events: none;
}

.contact-hero__media img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 联系方式 */
.contact-channels {
  padding: 60px 0 44px;
}

.page-contact .section-head {
  margin-bottom: 36px;
}

.contact-channel-list {
  display: grid;
  gap: 22px;
}

.contact-channel-side {
  display: grid;
  gap: 22px;
}

.contact-channel {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 30px 26px 26px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.contact-channel__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 8px;
  border-radius: 16px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  color: var(--accent);
}

.contact-channel__icon svg {
  width: 24px;
  height: 24px;
}

.contact-channel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.contact-channel__desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.contact-channel__value {
  display: block;
  margin-top: 8px;
  font-family: var(--font-data);
  font-size: clamp(1rem, 2.6vw, 1.28rem);
  line-height: 1.5;
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
}

.contact-channel__mailto {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  max-width: 100%;
}

.contact-channel__mailto span {
  word-break: break-all;
}

.contact-channel__mailto svg {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.contact-channel__mailto:hover svg {
  transform: translateX(4px);
}

.contact-channel--email {
  position: relative;
  overflow: hidden;
  border-color: rgba(56, 255, 154, 0.34);
  background: linear-gradient(135deg, rgba(14, 42, 71, 0.96) 0%, rgba(14, 42, 71, 0.78) 100%);
}

.contact-channel--email::after {
  content: "";
  position: absolute;
  top: -76px;
  right: -76px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: var(--contact-glow);
  pointer-events: none;
}

.contact-channel--phone .contact-channel__icon {
  color: var(--alert);
}

.contact-channel--address .contact-channel__icon {
  color: var(--text);
}

.contact-channel--address .contact-channel__value {
  color: var(--text);
}

/* 合作意向：编号交错卡片 */
.contact-cooperation {
  margin-top: 28px;
  padding: 56px 0 76px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(rgba(56, 255, 154, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 255, 154, 0.032) 1px, transparent 1px),
    linear-gradient(180deg, var(--bg-deep) 0%, rgba(14, 42, 71, 0.74) 50%, var(--bg-deep) 100%);
  background-size: 46px 46px, 46px 46px, 100% 100%;
}

.contact-cooperation__list {
  display: grid;
  gap: 18px;
}

.contact-cooperation__item {
  position: relative;
  display: grid;
  align-content: space-between;
  gap: 18px;
  min-height: 248px;
  padding: 30px 26px 26px;
  border-radius: 26px;
  background: rgba(14, 42, 71, 0.9);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.contact-cooperation__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent 68%);
  opacity: 0.72;
}

.contact-cooperation__item:nth-child(even)::before {
  background: linear-gradient(90deg, var(--alert), transparent 68%);
}

.contact-cooperation__item:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 255, 154, 0.46);
}

.contact-cooperation__num {
  font-family: var(--font-data);
  font-size: 0.88rem;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.contact-cooperation__item h3 {
  margin: -10px 0 0;
  font-family: var(--font-display);
  font-size: 1.32rem;
}

.contact-cooperation__item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.78;
}

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

/* 回复时效 */
.contact-response {
  padding: 60px 0 52px;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse 460px 260px at 8% 6%, rgba(14, 42, 71, 0.9), transparent 68%), var(--bg-deep);
}

.contact-response__inner {
  display: grid;
  gap: 36px;
  align-items: center;
}

.contact-response__sla {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 4px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--contact-alert-glow);
  border: 1px solid rgba(255, 51, 85, 0.4);
}

.contact-response__sla::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--alert);
  animation: contact-pulse 2s infinite ease-out;
}

.contact-response__sla span {
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-response__sla strong {
  font-family: var(--font-data);
  font-size: 1.42rem;
  letter-spacing: 0.02em;
  color: var(--alert);
}

@keyframes contact-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 51, 85, 0.42); }
  70% { box-shadow: 0 0 0 12px rgba(255, 51, 85, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 51, 85, 0); }
}

.contact-response__steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.contact-response__steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-response__steps li > span {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(56, 255, 154, 0.36);
  background: var(--bg-panel);
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--accent);
}

.contact-response__steps strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.contact-response__steps p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.72;
}

.contact-response__media {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(56, 255, 154, 0.24);
  overflow: hidden;
  box-shadow: 0 0 0 8px rgba(56, 255, 154, 0.04), 0 28px 52px rgba(0, 0, 0, 0.32);
}

.contact-response__media img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 常见联系问题 */
.contact-faq {
  padding: 56px 0 64px;
  background: radial-gradient(ellipse 460px 240px at 100% 10%, var(--contact-glow), transparent 66%), var(--bg-deep);
}

.contact-faq__inner {
  display: grid;
  gap: 40px;
}

.contact-faq__list {
  border-top: 1px solid var(--border);
}

.contact-faq__list details {
  border-bottom: 1px solid var(--border);
  padding: 2px 0;
}

.contact-faq__list summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 22px 52px 22px 4px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.contact-faq__list summary:hover {
  color: var(--accent);
}

.contact-faq__list summary::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 2px;
  width: 30px;
  height: 30px;
  margin-top: -15px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 1px solid var(--border);
}

.contact-faq__list summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 9px;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 1.02rem;
  line-height: 1;
  color: var(--accent);
}

.contact-faq__list details[open] summary::before {
  border-color: rgba(255, 51, 85, 0.42);
}

.contact-faq__list details[open] summary::after {
  content: "−";
  color: var(--alert);
}

.contact-faq__list details > p {
  margin: 0;
  padding: 0 52px 26px 4px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.contact-faq__more {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
  padding: 20px 22px;
  border-radius: 24px;
  background: var(--bg-neutral);
  border: 1px solid var(--border);
}

.contact-faq__more p {
  flex: 1;
  min-width: 180px;
  margin: 0;
  color: var(--muted);
}

/* 底部入口 */
.contact-links {
  padding: 24px 0 72px;
}

.contact-links__cards {
  display: grid;
  gap: 16px;
}

.contact-links__card {
  display: block;
  padding: 26px 24px;
  border-radius: 24px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.contact-links__card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 255, 154, 0.44);
  background: rgba(14, 42, 71, 0.7);
}

.contact-links__card span {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.contact-links__card span::after {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.contact-links__card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 平板与桌面布局 */
@media (min-width: 768px) {
  .contact-hero {
    padding: 44px 0 72px;
  }

  .contact-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .contact-hero__media {
    aspect-ratio: 2 / 1;
  }

  .contact-channels {
    padding: 88px 0 60px;
  }

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

  .contact-cooperation {
    margin-top: 40px;
    padding: 88px 0 116px;
  }

  .contact-response {
    padding: 88px 0 72px;
  }

  .contact-response__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
  }

  .contact-faq {
    padding: 84px 0 96px;
  }

  .contact-faq__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-faq__inner .section-head {
    position: sticky;
    top: 28px;
    margin-bottom: 0;
  }

  .contact-links {
    padding: 32px 0 100px;
  }
}

@media (min-width: 960px) {
  .contact-cooperation__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .contact-cooperation__item:nth-child(even) {
    transform: translateY(14px);
  }

  .contact-cooperation__item:nth-child(even):hover {
    transform: translateY(10px);
  }

  .contact-links__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}