.page-contact {
  --ct-band: clamp(34px, 5.4vw, 66px);
  --ct-block: clamp(24px, 4vw, 44px);
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-sans);
}

/* 面包屑 */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 3vw, 26px);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--stone-500);
}
.page-contact .crumbs__link {
  color: var(--ink-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out);
}
.page-contact .crumbs__link:hover {
  color: var(--signal-700);
  border-bottom-color: var(--signal-500);
}
.page-contact .crumbs__sep {
  color: var(--stone-500);
}
.page-contact .crumbs__item--current {
  color: var(--ink-900);
  font-weight: 700;
}

/* 首屏 */
.page-contact .contact-hero {
  padding: clamp(26px, 5vw, 52px) 0 clamp(22px, 3.4vw, 36px);
  border-bottom: 1px solid var(--hair);
}
.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: clamp(14px, 2.4vw, 22px);
}
.page-contact .contact-hero h1 {
  margin: 0 0 clamp(14px, 2.2vw, 20px);
  max-width: 22ch;
}
.page-contact .contact-hero .lede {
  max-width: 64ch;
  color: var(--ink-500);
}
.page-contact .contact-hero .lede a {
  color: var(--signal-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.page-contact .contact-hero .lede a:hover {
  text-decoration-thickness: 2px;
}

/* 双栏主体 */
.page-contact .contact-core {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-block);
  padding: var(--ct-band) 0 0;
}
.page-contact .core-left {
  min-width: 0;
}
.page-contact .core-left .h-section {
  margin: 6px 0 10px;
}
.page-contact .core-intro {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* 渠道列表 */
.page-contact .channels {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}
.page-contact .channel {
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--hair);
}
.page-contact .channel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}
.page-contact .channel__idx {
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .1em;
  color: var(--signal-700);
  border: 1px solid currentColor;
  border-radius: var(--radius);
  padding: 1px 6px;
}
.page-contact .channel__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: .04em;
}
.page-contact .channel__value {
  display: inline-block;
  max-width: 100%;
  margin: 12px 0 0;
  padding-bottom: 8px;
  font-size: clamp(1.0625rem, 3.4vw, 1.4rem);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--ink-900);
  border-bottom: 2px solid var(--signal-500);
  overflow-wrap: anywhere;
}
.page-contact .channel__desc {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
}
.page-contact .channel__hint {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-500);
}
.page-contact .channels__sla {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--celadon-500);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* 咨询前清单 */
.page-contact .prep {
  min-width: 0;
  background: var(--paper-200);
  padding: clamp(20px, 3.2vw, 30px);
}
.page-contact .prep .h-section {
  margin: 6px 0 10px;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
}
.page-contact .prep__intro {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-500);
}
.page-contact .prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-contact .check {
  border-bottom: 1px solid var(--hair-soft);
}
.page-contact .check:first-child {
  border-top: 1px solid var(--hair-soft);
}
.page-contact .check > label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  cursor: pointer;
}
.page-contact .check input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.page-contact .check__box {
  position: relative;
  flex: 0 0 auto;
  width: 17px;
  height: 17px;
  margin-top: 3px;
  background: var(--paper-100);
  border: 1px solid var(--ink-500);
  border-radius: 2px;
  transition: background-color .18s var(--ease-out), border-color .18s var(--ease-out);
}
.page-contact .check input:checked + .check__box {
  background: var(--celadon-500);
  border-color: var(--celadon-500);
}
.page-contact .check input:checked + .check__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid #FFFFFF;
  border-bottom: 2px solid #FFFFFF;
  transform: rotate(42deg);
}
.page-contact .check input:focus-visible + .check__box {
  outline: 2px solid var(--signal-500);
  outline-offset: 2px;
}
.page-contact .check__text {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-700);
  transition: color .18s var(--ease-out);
}
.page-contact .check input:checked ~ .check__text {
  color: var(--stone-500);
}

/* 渠道分工配图 */
.page-contact .contact-visual {
  margin: 0 auto;
  padding-top: var(--ct-band);
  padding-bottom: 0;
}
.page-contact .contact-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
}
.page-contact .contact-visual figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-500);
}

/* 受理范围 */
.page-contact .coverage {
  margin-top: var(--ct-band);
  padding: var(--ct-band) 0;
  background: var(--paper-200);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.page-contact .coverage__head {
  max-width: 62ch;
}
.page-contact .coverage__head .h-section {
  margin: 6px 0 12px;
}
.page-contact .coverage__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}
.page-contact .coverage__viz {
  margin: clamp(22px, 3.6vw, 34px) 0 0;
}
.page-contact .coverage__svg {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 0 auto;
}
.page-contact .coverage__viz figcaption {
  max-width: 56ch;
  margin: 12px auto 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-500);
  text-align: center;
}
.page-contact .coverage__lists {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 34px);
  margin-top: clamp(24px, 4vw, 38px);
}
.page-contact .scope {
  min-width: 0;
  padding-top: 16px;
  border-top: 2px solid var(--ink-900);
}
.page-contact .scope--self {
  border-top-color: var(--celadon-500);
}
.page-contact .scope__title {
  margin: 0 0 14px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .08em;
}
.page-contact .scope__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .scope__item {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-500);
}
.page-contact .scope__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 7px;
  height: 1px;
  background: var(--signal-500);
}
.page-contact .scope--self .scope__item::before {
  background: var(--celadon-500);
}
.page-contact .scope__item strong {
  color: var(--ink-900);
  font-weight: 700;
}

/* 运营地区 */
.page-contact .region {
  padding: var(--ct-band) 0 0;
}
.page-contact .region__head .h-section {
  margin: 6px 0 0;
}
.page-contact .region__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 28px);
}
.page-contact .region__col {
  min-width: 0;
}
.page-contact .region__mark {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--ink-500);
}
.page-contact .region__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal-500);
  box-shadow: 0 0 0 3px rgba(232, 85, 31, .16);
}
.page-contact .region__facts {
  margin: 0;
}
.page-contact .region__row {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--hair);
}
.page-contact .region__row:first-child {
  border-top: 1px solid var(--hair);
}
.page-contact .region__row dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--stone-500);
}
.page-contact .region__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}
.page-contact .region__figure {
  margin: 0;
}
.page-contact .region__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}
.page-contact .region__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-500);
}

/* 自助入口 */
.page-contact .selfhelp {
  padding: var(--ct-band) 0 clamp(22px, 3vw, 34px);
}
.page-contact .selfhelp__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  padding: clamp(24px, 4vw, 44px);
  background: var(--ink-900);
  border-radius: var(--radius);
}
.page-contact .selfhelp__box .eyebrow {
  color: var(--signal-500);
}
.page-contact .selfhelp__box .h-section {
  margin: 6px 0 12px;
  color: var(--paper-100);
}
.page-contact .selfhelp__box p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark);
}
.page-contact .selfhelp__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}
.page-contact .selfhelp__actions .btn {
  flex: 1 1 140px;
  justify-content: center;
  text-align: center;
}
.page-contact .selfhelp__box .btn--line {
  background: transparent;
  border: 1px solid var(--hair-dark);
  color: var(--paper-100);
}
.page-contact .selfhelp__box .btn--line:hover {
  border-color: var(--signal-500);
  color: #FFFFFF;
}

/* 收尾说明 */
.page-contact .closing-note {
  padding-bottom: clamp(40px, 6vw, 72px);
}
.page-contact .closing-note p {
  margin: 0;
  max-width: 80ch;
  padding-top: 16px;
  border-top: 1px solid var(--hair);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* 平板及以上 */
@media (min-width: 760px) {
  .page-contact .coverage__lists {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .page-contact .region__row {
    grid-template-columns: 6.5em minmax(0, 1fr);
  }
}

/* 桌面双栏 */
@media (min-width: 980px) {
  .page-contact .contact-core {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }
  .page-contact .region__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }
  .page-contact .selfhelp__box {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: center;
  }
}
<<<END>>>