.page-contact {
  --contact-gap: clamp(18px, 2.6vw, 30px);
  --contact-pad: clamp(18px, 2.8vw, 32px);
  --contact-line: rgba(124, 141, 166, .26);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: clamp(20px, 3vw, 36px);
  font-size: 12px;
}
.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--steel);
}
.page-contact .breadcrumb__list li {
  display: inline-flex;
  align-items: center;
}
.page-contact .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(124, 141, 166, .55);
}
.page-contact .breadcrumb__list a {
  color: var(--steel);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
.page-contact .breadcrumb__list a:hover,
.page-contact .breadcrumb__list a:focus-visible {
  color: var(--orange);
}
.page-contact .breadcrumb__list [aria-current="page"] {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-bottom: clamp(28px, 4.4vw, 52px);
}
.page-contact .contact-hero__eyebrow {
  margin: clamp(28px, 4.4vw, 52px) 0 14px;
  color: var(--cyan);
}
.page-contact .contact-hero__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--mist);
}
.page-contact .contact-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
}
.page-contact .contact-hero__figure {
  margin: clamp(26px, 4vw, 48px) 0 0;
  overflow: hidden;
  border: 1px solid var(--contact-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  background: var(--ink-2);
}
.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(.7) contrast(1.06) brightness(.82);
}

/* ---------- 两栏基座 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  padding-bottom: clamp(32px, 5vw, 64px);
}
.page-contact .contact-layout__main,
.page-contact .contact-layout__side {
  display: grid;
  align-content: start;
  gap: var(--contact-gap);
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1.62fr) minmax(268px, .88fr);
  }
}

/* ---------- 画板 ---------- */
.page-contact .contact-panel {
  position: relative;
  padding: var(--contact-pad);
  background: var(--ink-2);
  border: 1px solid var(--contact-line);
}
.page-contact .contact-panel .panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin: 0 0 clamp(16px, 2.2vw, 22px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--contact-line);
}
.page-contact .contact-panel .panel__index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}
.page-contact .contact-panel .panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.24rem, 2.4vw, 1.78rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-contact .contact-panel__intro {
  margin: 0 0 clamp(16px, 2.2vw, 22px);
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}
.page-contact .contact-panel__figure {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
}
.page-contact .contact-panel__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(.72) contrast(1.05) brightness(.85);
}

/* ---------- 四项清单 ---------- */
.page-contact .contact-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--contact-line);
}
.page-contact .contact-checklist__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--contact-line);
}
.page-contact .contact-checklist__item:last-child {
  border-bottom: 0;
}
.page-contact .contact-checklist__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cyan);
}
.page-contact .contact-checklist__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--mist);
}
.page-contact .contact-checklist__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 四类来信卡片 ---------- */
.page-contact .contact-kinds {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
@media (min-width: 720px) {
  .page-contact .contact-kinds {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}
.page-contact .contact-kind {
  position: relative;
  padding: 22px 18px 18px;
  background: rgba(10, 18, 32, .58);
  border: 1px solid var(--contact-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.page-contact .contact-kind:hover,
.page-contact .contact-kind:focus-within {
  transform: translateY(-2px);
  border-color: var(--orange);
  background: rgba(18, 32, 58, .78);
}
.page-contact .contact-kind__badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--cyan);
}
.page-contact .contact-kind__name {
  margin: 0 0 10px;
  padding-right: 46px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--mist);
}
.page-contact .contact-kind__body {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}
.page-contact .contact-kind__meta {
  margin: 0 0 8px;
  padding-top: 8px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px dashed var(--contact-line);
}
.page-contact .contact-kind__meta:last-child {
  margin-bottom: 0;
}
.page-contact .contact-kind__meta .micro {
  display: inline-block;
  margin-right: 8px;
  color: var(--orange);
}

/* ---------- 右栏 ---------- */
.page-contact .contact-side {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px);
  background: rgba(18, 32, 58, .62);
  border: 1px solid var(--contact-line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}
.page-contact .contact-side__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--mist);
}
.page-contact .contact-side__title::before {
  content: "";
  display: block;
  width: 26px;
  height: 3px;
  margin-bottom: 10px;
  background: var(--orange);
}
.page-contact .contact-side__intro {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--steel);
}
.page-contact .contact-side__note {
  margin: 16px 0 0;
  padding-top: 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel);
  border-top: 1px solid var(--contact-line);
}
.page-contact .contact-side a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, .35);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-contact .contact-side a:hover,
.page-contact .contact-side a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 节奏刻度 ---------- */
.page-contact .contact-scale {
  position: relative;
  margin: 0;
  padding: 2px 0 2px 22px;
  list-style: none;
}
.page-contact .contact-scale::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), rgba(124, 141, 166, .18));
}
.page-contact .contact-scale__step {
  position: relative;
  display: grid;
  gap: 2px;
  padding-bottom: 15px;
}
.page-contact .contact-scale__step:last-child {
  padding-bottom: 0;
}
.page-contact .contact-scale__step::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 1px solid var(--cyan);
}
.page-contact .contact-scale__label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--mist);
}
.page-contact .contact-scale__note {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- 纠错与讨论 ---------- */
.page-contact .contact-verdicts {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--contact-line);
}
.page-contact .contact-verdicts__row + .contact-verdicts__row {
  margin-top: 14px;
}
.page-contact .contact-verdicts dt {
  margin-bottom: 4px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange);
}
.page-contact .contact-verdicts dd {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 联系方式 ---------- */
.page-contact .contact-channels {
  margin: 0;
}
.page-contact .contact-channels__row + .contact-channels__row {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--contact-line);
}
.page-contact .contact-channels dt {
  margin: 0 0 6px;
  color: var(--steel);
}
.page-contact .contact-channels dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}
.page-contact .contact-channels dd.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
  word-break: break-word;
}
.page-contact .contact-channels__address {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}
.page-contact .contact-side--channels {
  background: rgba(10, 18, 32, .72);
}

/* ---------- 服务地区与备案 ---------- */
.page-contact .contact-region {
  margin: 0;
}
.page-contact .contact-region__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
}
.page-contact .contact-region__row + .contact-region__row {
  margin-top: 10px;
}
.page-contact .contact-region dt {
  flex: 0 0 auto;
  color: var(--steel);
}
.page-contact .contact-region dd {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}
.page-contact .contact-region dd.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .01em;
}
.page-contact .contact-side--region {
  background: none;
  border-color: rgba(124, 141, 166, .18);
  clip-path: none;
}
.page-contact .contact-side--region .contact-side__title::before {
  background: var(--steel);
}

/* ---------- 边界说明 ---------- */
.page-contact .contact-limits-block {
  position: relative;
  padding: clamp(34px, 5vw, 64px) 0;
  background: var(--paper);
  color: var(--ink);
  border-top: 1px solid rgba(10, 18, 32, .2);
  border-bottom: 1px solid rgba(10, 18, 32, .2);
}
.page-contact .contact-limits-block__eyebrow {
  margin: 0 0 12px;
  color: #A8451C;
}
.page-contact .contact-limits-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--ink);
}
.page-contact .contact-limits-block__lead {
  margin: 16px 0 clamp(22px, 3vw, 30px);
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: #4A5568;
}
.page-contact .contact-limits {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(10, 18, 32, .2);
}
@media (min-width: 760px) {
  .page-contact .contact-limits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }
}
.page-contact .contact-limits__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  padding: 13px 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: #333C4A;
  border-bottom: 1px solid rgba(10, 18, 32, .14);
}
.page-contact .contact-limits__mark {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #C4331F;
}
.page-contact .contact-limits-block__tail {
  margin: clamp(20px, 2.8vw, 28px) 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #4A5568;
}
.page-contact .contact-limits-block__tail a {
  color: #A8451C;
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 69, 28, .4);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-contact .contact-limits-block__tail a:hover,
.page-contact .contact-limits-block__tail a:focus-visible {
  color: var(--ink);
  border-color: var(--ink);
}

/* ---------- 相关页面 ---------- */
.page-contact .contact-more {
  padding-top: clamp(34px, 5vw, 60px);
  padding-bottom: clamp(40px, 6vw, 76px);
}
.page-contact .contact-more__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--mist);
}
.page-contact .contact-more__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--contact-line);
}
@media (min-width: 860px) {
  .page-contact .contact-more__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}
.page-contact .contact-more__item {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--contact-line);
}
.page-contact .contact-more__item a {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--mist);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
.page-contact .contact-more__item a:hover,
.page-contact .contact-more__item a:focus-visible {
  color: var(--orange);
}
.page-contact .contact-more__item span {
  font-size: 13px;
  line-height: 1.68;
  color: var(--steel);
}

/* ---------- 焦点与降级 ---------- */
.page-contact a:focus-visible,
.page-contact .contact-kind:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-kind,
  .page-contact .contact-kind:hover,
  .page-contact .contact-kind:focus-within {
    transform: none;
  }
  .page-contact .reveal {
    opacity: 1;
    transform: none;
  }
}
<<<END>>>