.page-contact {
  --contact-line: rgba(34, 83, 122, .55);
  padding-bottom: clamp(48px, 6vw, 96px);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 32px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .breadcrumbs__item {
  color: var(--slate);
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-600);
}

.page-contact .breadcrumbs__item a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .breadcrumbs__item a:hover {
  color: var(--cyan);
  border-bottom-color: rgba(95, 227, 208, .5);
}

/* 首屏 */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
}

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

.page-contact .contact-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 7vw, 70px);
  line-height: 1.02;
  letter-spacing: -.01em;
  color: var(--mist);
  text-wrap: balance;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 38ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-hero__facts {
  display: grid;
  gap: 10px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--slate);
}

.page-contact .contact-hero__facts li {
  position: relative;
  padding-left: 16px;
  line-height: 1.6;
}

.page-contact .contact-hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.page-contact .contact-hero__facts .mono {
  color: var(--mist);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .contact-hero__aside {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--ink-800);
  border-left: 2px solid var(--cyan);
}

.page-contact .contact-hero__version {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--lime);
}

.page-contact .contact-hero__aside-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .contact-hero__figure {
  margin: clamp(26px, 3.5vw, 44px) 0 0;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 5;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* 章节通用节奏 */
.page-contact .channels,
.page-contact .hours,
.page-contact .urgent,
.page-contact .coop,
.page-contact .nameplate-section,
.page-contact .precheck,
.page-contact .contact-cta {
  margin-top: clamp(48px, 7vw, 96px);
}

.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 22px;
  margin-bottom: clamp(20px, 2.6vw, 32px);
}

.page-contact .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.12;
  color: var(--mist);
  text-wrap: balance;
}

.page-contact .section-head__aside {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--slate);
}

/* 三条通道 */
.page-contact .channels__grid {
  display: grid;
  gap: clamp(14px, 1.6vw, 20px);
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  transition: background .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: var(--ink-700);
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(3, 12, 22, .45);
}

.page-contact .channel__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 122, 47, .5);
  color: var(--orange);
}

.page-contact .channel__name {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--mist);
}

.page-contact .channel__contact {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .channel__for {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .channel__more {
  font-size: 13px;
  color: var(--slate);
}

.page-contact .channel__more summary {
  cursor: pointer;
  list-style: none;
  padding: 2px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

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

.page-contact .channel__more summary::after {
  content: " +";
}

.page-contact .channel__more[open] summary::after {
  content: " −";
}

.page-contact .channel__more ul {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding-left: 18px;
  line-height: 1.65;
}

.page-contact .channel__foot {
  display: grid;
  gap: 12px;
  margin-top: auto;
  padding-top: 8px;
}

.page-contact .channel__sla {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-contact .channel__foot .btn {
  justify-self: start;
}

/* 响应安排 */
.page-contact .hours__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-contact .hours__clock {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(20px, 2.4vw, 26px);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
}

.page-contact .hours__range {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-contact .hours__range span {
  margin: 0 .16em;
  color: var(--orange);
}

.page-contact .hours__days {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-contact .hours__scale {
  height: 6px;
  margin-top: 6px;
  border-radius: var(--radius-pill);
  background: rgba(34, 83, 122, .55);
  overflow: hidden;
}

.page-contact .hours__scale span {
  display: block;
  width: 37.5%;
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--cyan), rgba(95, 227, 208, .25));
}

.page-contact .hours__body p {
  margin: 0 0 1.1em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

/* 加急 */
.page-contact .urgent {
  padding: clamp(24px, 3.6vw, 44px);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--amber);
  background: linear-gradient(118deg, rgba(242, 193, 78, .16), rgba(242, 193, 78, .05) 52%, rgba(14, 42, 68, 0) 82%);
}

.page-contact .urgent .pill {
  margin: 0;
}

.page-contact .urgent h2 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.15;
  color: var(--mist);
}

.page-contact .urgent p {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-contact .urgent__list li {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(242, 193, 78, .3);
  font-size: 14px;
  line-height: 1.66;
  color: var(--mist);
}

.page-contact .urgent__list .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
  padding-top: 3px;
}

.page-contact .urgent .urgent__note {
  margin: 0;
  max-width: 60ch;
  font-size: 13px;
  line-height: 1.72;
  color: var(--slate);
}

/* 合作与纠错 */
.page-contact .coop__grid {
  display: grid;
  gap: clamp(14px, 1.8vw, 22px);
}

.page-contact .coop__card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--radius-md);
  background: var(--ink-800);
}

.page-contact .coop__card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .coop__card > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .coop__need {
  display: grid;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop__need li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--mist);
}

.page-contact .coop__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

.page-contact .coop__card .coop__note {
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .coop__prices {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* 地址铭牌 */
.page-contact .nameplate {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .nameplate__plate {
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
}

.page-contact .nameplate__line {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--contact-line);
}

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

.page-contact .nameplate__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .nameplate__val {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.72;
  letter-spacing: .01em;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .nameplate__line--note .nameplate__val {
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

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

.page-contact .nameplate__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* 自查清单 */
.page-contact .precheck__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .precheck__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--contact-line);
}

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

.page-contact .precheck__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
  padding-top: 6px;
}

.page-contact .precheck__item h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
}

.page-contact .precheck__item h3 a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 227, 208, .35);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-contact .precheck__item h3 a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .precheck__item p {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.74;
  color: var(--slate);
}

.page-contact .precheck__extra {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .precheck__extra a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 227, 208, .45);
}

.page-contact .precheck__extra a:hover {
  border-bottom-color: var(--cyan);
}

/* 收束 */
.page-contact .contact-cta {
  display: grid;
  gap: 14px;
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(255, 122, 47, .18), rgba(255, 122, 47, 0) 62%),
    var(--ink-800);
}

.page-contact .contact-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.15;
  color: var(--mist);
}

.page-contact .contact-cta p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (min-width: 820px) {
  .page-contact .channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

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

  .page-contact .hours__grid {
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    align-items: start;
  }

  .page-contact .nameplate {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.28fr) minmax(250px, .72fr);
    align-items: start;
  }

  .page-contact .nameplate__line {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-contact .precheck__item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel {
    transition: background .18s var(--ease);
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within {
    transform: none;
    box-shadow: none;
  }
}
<<<END>>>