.page-contact {
  --contact-card-bg: rgba(14, 37, 64, 0.92);
  --contact-line: rgba(147, 163, 180, 0.18);
  padding-bottom: clamp(56px, 9vw, 110px);
  color: var(--mist);
  overflow-x: hidden;
}

.page-contact .breadcrumbs {
  width: calc(100% - (var(--gutter) * 2));
  max-width: var(--content-max);
  margin: 0 auto;
  padding-top: 20px;
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gray);
}

.page-contact .breadcrumbs li[aria-current] {
  color: var(--mist);
}

.page-contact .breadcrumbs a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--amber);
}

/* ---------- 首屏：邮箱作为视觉锚点 ---------- */

.page-contact .contact-hero {
  position: relative;
  width: calc(100% - (var(--gutter) * 2));
  max-width: var(--page-max);
  margin: 22px auto 0;
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--ink-black);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.72) contrast(1.05);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(115% 90% at 12% 6%, rgba(59, 30, 90, 0.78), transparent 62%),
    linear-gradient(180deg, rgba(11, 27, 43, 0.7) 0%, rgba(7, 19, 32, 0.95) 82%);
}

.page-contact .contact-hero__body {
  position: relative;
  z-index: 2;
  padding: clamp(30px, 7vw, 78px) clamp(22px, 5vw, 68px);
  max-width: 900px;
}

.page-contact .contact-hero .eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .contact-hero h1 {
  margin: 0;
  font-size: clamp(32px, 6.4vw, 68px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-contact .contact-hero .lead {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(232, 237, 242, 0.78);
}

.page-contact .contact-hero__mail {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 22px;
  border-top: 1px solid rgba(242, 169, 0, 0.32);
}

.page-contact .contact-hero__mail-label {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-contact .contact-hero__mail-value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(15px, 4.4vw, 50px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--amber);
  word-break: break-word;
  overflow-wrap: anywhere;
  border-bottom: 2px solid rgba(242, 169, 0, 0.4);
  padding-bottom: 8px;
}

.page-contact .contact-hero__hint {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  max-width: 42em;
}

/* ---------- 章节色带 ---------- */

.page-contact .section-band {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
  padding: 14px 0 12px;
  border-top: 2px solid var(--amber);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .section-band--violet {
  padding-inline: 18px;
  border-top-color: var(--cyan);
  background: linear-gradient(90deg, rgba(59, 30, 90, 0.85), rgba(59, 30, 90, 0));
  border-radius: 0 20px 20px 0;
}

.page-contact .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .section-title {
  margin: 0;
  font-size: clamp(24px, 4.2vw, 42px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

/* ---------- 各区公共宽度 ---------- */

.page-contact .channels,
.page-contact .contact-panel,
.page-contact .reply,
.page-contact .precheck {
  width: calc(100% - (var(--gutter) * 2));
  max-width: var(--content-max);
  margin: clamp(56px, 8vw, 100px) auto 0;
}

/* ---------- 四类反馈通道 ---------- */

.page-contact .channels__lead {
  margin: 0 0 30px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(232, 237, 242, 0.76);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-contact .channel-card {
  position: relative;
  min-width: 0;
  padding: 26px 22px 24px;
  background: linear-gradient(160deg, rgba(14, 37, 64, 0.95), rgba(11, 27, 43, 0.9));
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-panel);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--amber);
  background: linear-gradient(160deg, rgba(21, 50, 82, 0.98), rgba(14, 32, 52, 0.94));
  box-shadow: var(--shadow-panel);
}

.page-contact .channel-card__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gray);
  transition: color var(--transition);
}

.page-contact .channel-card:hover .channel-card__no,
.page-contact .channel-card:focus-within .channel-card__no {
  color: var(--cyan);
}

.page-contact .channel-card h3 {
  margin: 12px 0 10px;
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--mist);
}

.page-contact .channel-card > p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 237, 242, 0.76);
}

.page-contact .channel-card__meta {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .channel-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .channel-card li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--gray);
}

.page-contact .channel-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 9px;
  height: 1px;
  background: var(--amber);
}

/* ---------- 联系信息卡 ---------- */

.page-contact .contact-panel__card {
  padding: clamp(22px, 4vw, 40px);
  background: linear-gradient(150deg, rgba(14, 37, 64, 0.94), rgba(7, 19, 32, 0.96));
  border: 1px solid var(--amber);
  border-radius: var(--radius-panel);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

.page-contact .contact-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-list__row {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-list__row:first-child {
  padding-top: 0;
}

.page-contact .contact-list__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-list dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-contact .contact-list dd {
  margin: 0;
  font-size: clamp(16px, 2.4vw, 20px);
  line-height: 1.62;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .contact-list dd .data-mono {
  font-family: var(--font-mono);
  color: var(--amber-soft);
}

.page-contact .contact-panel__note {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px dashed var(--contact-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

.page-contact .contact-panel__note a,
.page-contact .precheck__foot a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 169, 0, 0.45);
  transition: color var(--transition), border-color var(--transition);
}

.page-contact .contact-panel__note a:hover,
.page-contact .precheck__foot a:hover {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应时效 ---------- */

.page-contact .reply__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-contact .reply__item {
  min-width: 0;
  padding-left: 22px;
  border-left: 2px solid var(--violet);
}

.page-contact .reply__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-contact .reply__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 237, 242, 0.76);
}

/* ---------- 提交前自查 ---------- */

.page-contact .precheck__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: precheck;
  display: grid;
  gap: 12px;
}

.page-contact .precheck__list li {
  position: relative;
  padding: 16px 18px 16px 56px;
  background: rgba(14, 37, 64, 0.62);
  border-radius: 16px 8px 20px 10px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 237, 242, 0.82);
}

.page-contact .precheck__list li::before {
  counter-increment: precheck;
  content: counter(precheck, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .precheck__foot {
  margin: 24px 0 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 结尾邀请 ---------- */

.page-contact .closing {
  position: relative;
  width: calc(100% - (var(--gutter) * 2));
  max-width: var(--content-max);
  margin: clamp(56px, 8vw, 96px) auto 0;
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--ink-black);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.46);
}

.page-contact .closing__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .closing__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-contact .closing::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(122deg, rgba(11, 27, 43, 0.96) 28%, rgba(59, 30, 90, 0.6) 100%);
}

.page-contact .closing__card {
  position: relative;
  z-index: 2;
  padding: clamp(28px, 6vw, 62px);
  max-width: 46em;
}

.page-contact .closing__card h2 {
  margin: 0 0 16px;
  font-size: clamp(23px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--mist);
}

.page-contact .closing__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 237, 242, 0.78);
}

.page-contact .closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .contact-list__row {
    grid-template-columns: 148px minmax(0, 1fr);
    align-items: baseline;
    gap: 22px;
  }

  .page-contact .reply__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 34px;
  }

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

@media (min-width: 860px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 26px;
    row-gap: 26px;
    margin-bottom: 32px;
  }

  .page-contact .channel-card:nth-child(even) {
    transform: translateY(32px);
    margin-bottom: 32px;
  }

  .page-contact .channel-card:nth-child(even):hover,
  .page-contact .channel-card:nth-child(even):focus-within {
    transform: translateY(26px);
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: translateY(-6px);
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero__body {
    padding-right: 120px;
  }

  .page-contact .channel-card {
    padding: 30px 26px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card__no,
  .page-contact .contact-panel__note a,
  .page-contact .precheck__foot a,
  .page-contact .breadcrumbs a {
    transition: none;
  }

  .page-contact .channel-card:nth-child(even),
  .page-contact .channel-card:nth-child(even):hover,
  .page-contact .channel-card:nth-child(even):focus-within,
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
}