.page-contact {
  --contact-card-bg: #101C16;
  --contact-card-bg-hover: #16281F;
  background: var(--night-900);
  color: var(--fog-100);
}

.page-contact .section {
  padding-top: 40px;
  padding-bottom: 40px;
}

.page-contact .section--tight {
  padding-top: 28px;
  padding-bottom: 28px;
}

.page-contact .breadcrumbs {
  padding: 16px 0 0;
  font-size: 13px;
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--fog-400);
}

.page-contact .breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-contact .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--line-600);
}

.page-contact .breadcrumb-link {
  color: var(--fog-400);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.page-contact .breadcrumb-link:hover,
.page-contact .breadcrumb-link:focus-visible {
  color: var(--lime-400);
}

.page-contact .inline-link {
  color: var(--cyan-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 232, 194, 0.35);
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
}

.page-contact .section-kicker,
.page-contact .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-number);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan-300);
}

.page-contact .display-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white-000);
}

.page-contact .section-heading {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--white-000);
}

.page-contact .lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog-400);
  max-width: 58ch;
}

/* ---------- 首屏联系面板 ---------- */
.page-contact .contact-hero {
  padding-top: 20px;
}

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

.page-contact .contact-hero__panel {
  position: relative;
  padding: 26px 20px 22px;
  border-radius: var(--radius-panel);
  background:
    radial-gradient(120% 90% at 0% 0%, rgba(200, 255, 77, 0.12), transparent 62%),
    radial-gradient(90% 70% at 100% 100%, rgba(77, 232, 194, 0.08), transparent 60%),
    var(--pitch-800);
  overflow: hidden;
}

.page-contact .contact-hero__mail {
  display: grid;
  gap: 8px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-600);
}

.page-contact .contact-hero__mail-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--fog-400);
}

.page-contact .contact-hero__mail-value {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: clamp(21px, 5.6vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--lime-400);
  word-break: break-word;
  text-shadow: 0 0 26px rgba(200, 255, 77, 0.28);
}

.page-contact .contact-hero__mail-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .contact-hero__photo {
  margin: 24px 0 0;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--panel-700);
}

.page-contact .contact-hero__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.75) contrast(1.06) brightness(0.88);
}

.page-contact .contact-hero__photo .media-frame__caption {
  font-size: 12px;
  color: var(--fog-400);
  padding: 8px 2px 0;
}

.page-contact .contact-hero__cards {
  display: grid;
  gap: 12px;
}

.page-contact .fb-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 18px;
  border-radius: var(--radius-panel);
  background: var(--contact-card-bg);
  border-left: 2px solid var(--line-600);
  transition: transform 0.22s var(--ease-out), background 0.22s var(--ease-out), border-color 0.22s var(--ease-out);
}

.page-contact .fb-card:hover {
  transform: translateY(-3px);
  background: var(--contact-card-bg-hover);
  border-left-color: var(--lime-400);
}

.page-contact .fb-card__num {
  font-family: var(--font-number);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime-400);
}

.page-contact .fb-card .tag {
  align-self: flex-start;
  font-size: 11px;
}

.page-contact .fb-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.35;
  color: var(--white-000);
}

.page-contact .fb-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .fb-card__hint {
  margin: auto 0 0;
  padding-top: 10px;
  font-size: 12px;
  color: var(--cyan-300);
}

.page-contact .fb-card:nth-child(3) .fb-card__num,
.page-contact .fb-card:nth-child(3) .fb-card__hint {
  color: var(--amber-400);
}

/* ---------- 联系方式 ---------- */
.page-contact .contact-channels__head {
  max-width: 62ch;
}

.page-contact .channel-grid {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  border-radius: var(--radius-panel);
  background: var(--pitch-800);
  border: 1px solid var(--line-600);
}

.page-contact .channel-card--mail {
  background:
    linear-gradient(160deg, rgba(200, 255, 77, 0.1), transparent 58%),
    var(--pitch-800);
  border-color: rgba(200, 255, 77, 0.28);
}

.page-contact .channel-card__label {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--fog-400);
}

.page-contact .channel-card__value {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: clamp(19px, 4.6vw, 24px);
  line-height: 1.2;
  color: var(--white-000);
  word-break: break-word;
}

.page-contact .channel-card__value--lg {
  font-size: clamp(19px, 5vw, 30px);
  color: var(--lime-400);
}

.page-contact .channel-card__value--sm {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--fog-100);
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .channel-art {
  width: 100%;
  height: auto;
  margin-top: auto;
  padding-top: 14px;
  display: block;
  color: var(--line-600);
}

.page-contact .channel-art .pin {
  fill: var(--lime-400);
}

/* ---------- 流程带 ---------- */
.page-contact .contact-flow__inner {
  display: grid;
  gap: 24px;
  padding: 26px 18px;
  border-radius: var(--radius-panel);
  background: var(--panel-700);
}

.page-contact .flow-steps {
  display: grid;
  gap: 20px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  position: relative;
  padding-left: 46px;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: -20px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime-400), rgba(200, 255, 77, 0.08));
}

.page-contact .flow-step:last-child::before {
  display: none;
}

.page-contact .flow-step__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime-400);
  color: var(--night-900);
  font-family: var(--font-number);
  font-weight: 700;
  font-size: 14px;
}

.page-contact .flow-step__title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--white-000);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .contact-flow__figure {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--night-900);
}

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

.page-contact .contact-flow__figure .media-frame__caption {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--fog-400);
  background: var(--night-900);
}

/* ---------- 填写要点 ---------- */
.page-contact .write-tips__grid {
  display: grid;
  gap: 26px;
}

.page-contact .write-tips__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--fog-400);
  padding-left: 14px;
  border-left: 2px solid var(--cyan-300);
}

.page-contact .tips-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: tips;
}

.page-contact .tips-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
  border-radius: 10px;
  background: var(--contact-card-bg);
}

.page-contact .tips-item__mark {
  font-family: var(--font-number);
  font-size: 15px;
  font-weight: 700;
  color: var(--lime-400);
  padding-top: 2px;
}

.page-contact .tips-item__title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--fog-100);
}

.page-contact .tips-item__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

/* ---------- 回复节奏 ---------- */
.page-contact .sla-row {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .sla-item {
  padding: 18px 16px;
  border-radius: 10px;
  background: var(--pitch-800);
  border-left: 3px solid var(--lime-400);
}

.page-contact .sla-item:nth-child(2) {
  border-left-color: var(--amber-400);
}

.page-contact .sla-item:nth-child(3) {
  border-left-color: var(--cyan-300);
}

.page-contact .sla-item:nth-child(4) {
  border-left-color: rgba(200, 255, 77, 0.45);
}

.page-contact .sla-item__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-number);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--white-000);
}

.page-contact .sla-item__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-400);
}

/* ---------- 合作共建 ---------- */
.page-contact .coop__inner {
  display: grid;
  gap: 26px;
  padding: 26px 18px;
  border-radius: var(--radius-panel);
  background:
    radial-gradient(110% 80% at 100% 0%, rgba(255, 154, 60, 0.12), transparent 60%),
    var(--pitch-800);
}

.page-contact .coop__contact {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--fog-400);
}

.page-contact .coop__mail {
  font-family: var(--font-number);
  font-weight: 700;
  color: var(--lime-400);
  word-break: break-word;
}

.page-contact .coop__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop__item {
  padding: 16px;
  border-radius: 10px;
  background: var(--contact-card-bg);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact .coop__item .tag {
  align-self: flex-start;
  font-size: 11px;
}

.page-contact .coop__item-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--white-000);
}

.page-contact .coop__item-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .coop__links {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--fog-400);
}

/* ---------- 常见问题 ---------- */
.page-contact .faq__head {
  max-width: 62ch;
}

.page-contact .faq__list {
  margin-top: 20px;
  border-top: 1px solid var(--line-600);
}

.page-contact .faq-item {
  border-bottom: 1px solid var(--line-600);
}

.page-contact .faq-item summary {
  position: relative;
  padding: 16px 38px 16px 0;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--fog-100);
  list-style: none;
}

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

.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-number);
  font-size: 20px;
  color: var(--lime-400);
}

.page-contact .faq-item[open] summary::after {
  content: "–";
}

.page-contact .faq-item summary:hover {
  color: var(--lime-200);
}

.page-contact .faq-item summary:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 4px;
}

.page-contact .faq-body {
  padding: 0 8px 16px 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--fog-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .page-contact .contact-hero__panel,
  .page-contact .contact-flow__inner,
  .page-contact .coop__inner {
    padding: 32px 28px;
  }

  .page-contact .contact-hero__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

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

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

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 26px;
    align-items: start;
  }

  .page-contact .contact-hero__panel {
    position: sticky;
    top: 96px;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas:
      "mail mail phone"
      "addr addr hours";
  }

  .page-contact .channel-card--mail {
    grid-area: mail;
  }

  .page-contact .channel-card--phone {
    grid-area: phone;
  }

  .page-contact .channel-card--addr {
    grid-area: addr;
  }

  .page-contact .channel-card--hours {
    grid-area: hours;
  }

  .page-contact .contact-flow__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
    padding: 40px 36px;
  }

  .page-contact .write-tips__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .sla-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .coop__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    padding: 40px 36px;
  }

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

  .page-contact .faq__list {
    max-width: 900px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .fb-card {
    padding: 22px 20px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-card,
  .page-contact .inline-link,
  .page-contact .breadcrumb-link {
    transition: none;
  }

  .page-contact .fb-card:hover {
    transform: none;
  }
}