.page-contact {
  --contact-tight: clamp(40px, 6vw, 76px);
}

.page-contact .contact-lead {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: var(--contact-tight);
}

.page-contact .contact-lead__grid {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  align-items: start;
}

.page-contact .contact-lead__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-lead__lede {
  margin-top: 20px;
  max-width: 34ch;
  color: var(--muted);
}

.page-contact .contact-lead__media {
  margin: 0;
}

.page-contact .contact-direct {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-direct__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-direct__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .contact-direct__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.6vw, 32px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--gold);
  word-break: break-all;
  user-select: all;
  transition: color var(--t) var(--ease);
}

.page-contact .contact-direct__item:hover .contact-direct__value {
  color: var(--gold-soft);
}

.page-contact .contact-direct__hint {
  margin: 12px 0 0;
  font-family: var(--font-kai);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .section {
  padding-block: var(--contact-tight);
}

.page-contact h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .prose {
  margin-top: 18px;
  color: var(--muted);
  max-width: 36ch;
}

/* 三条通道 */
.page-contact .channel-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .channel-list__row {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 3vw, 32px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .channel-list__key {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .channel-list__body h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.6vw, 23px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .channel-list__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .channel-list__body p:last-child {
  margin-bottom: 0;
}

.page-contact .channel-list__val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.9vw, 17px);
  color: var(--gold);
  word-break: break-word;
}

/* 邮件标题 */
.page-contact .title-format__copy h2 {
  margin-bottom: 0;
}

.page-contact .title-card {
  margin-top: 26px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--paper);
  color: var(--ink-900);
  border-left: 4px solid var(--gold);
}

.page-contact .title-card__hint {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-700);
}

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

.page-contact .title-card__list li {
  padding-top: 10px;
  border-top: 1px solid rgba(10, 20, 32, 0.16);
}

.page-contact .title-card__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .title-card code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  word-break: break-word;
}

.page-contact .title-format__tip {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-family: var(--font-kai);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .title-format__media {
  margin: 0;
}

/* 值班时间 */
.page-contact .hours-band {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4vw, 44px);
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-contact .hours-band__time {
  margin: 10px 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(32px, 7.4vw, 58px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-contact .hours-band__time span {
  padding: 0 6px;
  opacity: 0.45;
}

.page-contact .hours-band__days {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .hours-band__body p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .hours-band__body a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 180, 76, 0.4);
}

.page-contact .hours-band__body a:hover {
  color: var(--gold-soft);
}

.page-contact .hours-band__body .btn {
  margin-top: 22px;
}

/* 核验材料 */
.page-contact .prep-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep-list li {
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink-900);
}

.page-contact .prep-list__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--teal);
}

.page-contact .prep-list h3 {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .prep-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* 订阅排查 */
.page-contact .flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .flow__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--t) var(--ease);
}

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

.page-contact .flow__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
}

.page-contact .flow__details[open] .flow__summary::after {
  content: "−";
}

.page-contact .flow__summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .flow__badge {
  display: inline-flex;
  flex: 0 0 auto;
}

.page-contact .flow__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .flow__summary:hover .flow__title {
  color: var(--gold-soft);
}

.page-contact .flow__meta {
  font-family: var(--font-kai);
  font-size: 13px;
  color: var(--muted);
}

.page-contact .flow__body {
  padding: 0 0 18px 42px;
}

.page-contact .flow__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 60ch;
}

.page-contact .flow__body a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 180, 76, 0.4);
}

.page-contact .flow__body a:hover {
  color: var(--gold-soft);
}

.page-contact .flow__tail {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 68ch;
}

.page-contact .flow__tail .num {
  color: var(--gold);
  word-break: break-all;
}

/* 地址与备案 */
.page-contact .addr-grid {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .addr-grid__cell {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink-900);
}

.page-contact .addr-grid__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--teal);
}

.page-contact .addr-grid__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .addr-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .addr-note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 180, 76, 0.4);
}

.page-contact .addr-note a:hover {
  color: var(--gold-soft);
}

@media (max-width: 560px) {
  .page-contact .flow__meta {
    display: none;
  }

  .page-contact .flow__body {
    padding-left: 42px;
  }
}

@media (min-width: 760px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .contact-lead__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-contact .hours-band {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-contact .channel-list__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }
}
<<<END>>>