.page-contact {
  --c-hair: rgba(233, 238, 246, 0.07);
  --c-hair-strong: rgba(233, 238, 246, 0.13);
  --c-grid: rgba(233, 238, 246, 0.035);
  position: relative;
  display: block;
  color: var(--text-body);
}

.page-contact .contact-crumbs {
  padding-top: clamp(1.25rem, 3vw, 2rem);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
}

.page-contact .contact-hero__index {
  margin: 0 0 clamp(0.9rem, 2vw, 1.4rem);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-contact .contact-hero__title {
  margin: 0 0 clamp(1rem, 2.4vw, 1.5rem);
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: var(--fs-h1);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--text-title);
}

.page-contact .contact-hero__lead {
  margin: 0 0 clamp(1.5rem, 3.4vw, 2.25rem);
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.85;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

.page-contact .contact-hero__media .media__frame {
  border: 1px solid var(--c-hair-strong);
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: clamp(2.5rem, 6vw, 5rem);
  }

  .page-contact .contact-hero__media {
    margin-top: clamp(1rem, 4vw, 3rem);
  }
}

/* ---------- 官方渠道清单 ---------- */

.page-contact .contact-list {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--c-hair-strong);
}

.page-contact .contact-row {
  display: grid;
  gap: 0.75rem;
  padding: clamp(1.5rem, 4vw, 2.35rem) 0;
  border-bottom: 1px solid var(--c-hair-strong);
}

.page-contact .contact-row__key {
  display: block;
  font-size: var(--fs-20);
  font-weight: 500;
  color: var(--text-title);
  letter-spacing: 0.01em;
}

.page-contact .contact-row__hint {
  display: block;
  margin-top: 0.4rem;
  max-width: 30em;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-contact .contact-row__value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.page-contact .contact-row__value .code {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.6vw, 1.1rem);
  line-height: 1.5;
  color: var(--text-title);
  background: var(--plate-soft);
  border: 1px solid var(--c-hair-strong);
  border-radius: var(--pill);
  padding: 0.6rem 1.1rem;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
  text-align: left;
}

.page-contact .code--copy {
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .code--copy:hover {
  border-color: var(--teal-line);
  color: var(--mint);
}

.page-contact .code--copy:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-contact .code--copy[data-copied] {
  border-color: var(--teal);
  color: var(--teal);
  background: var(--teal-soft);
}

.page-contact .contact-row__plain {
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--text-body);
}

@media (min-width: 760px) {
  .page-contact .contact-row {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: clamp(1.5rem, 5vw, 4rem);
  }
}

.page-contact .contact-channels__foot {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  font-size: var(--fs-14);
  color: var(--text-muted);
}

/* ---------- 响应与范围 ---------- */

.page-contact .contact-scope__grid {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.page-contact .contact-scope__card {
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 3.6vw, 2.15rem);
  border: 1px solid var(--c-hair);
  background: var(--ink-panel);
  border-radius: var(--radius-md);
}

.page-contact .contact-scope__title {
  margin: 0 0 0.85rem;
  font-size: var(--fs-20);
  font-weight: 500;
  color: var(--text-title);
}

.page-contact .contact-scope__text {
  margin: 0 0 1.15rem;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

.page-contact .contact-scope__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-contact .contact-scope__list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-contact .contact-scope__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.page-contact .contact-scope__card--alt .contact-scope__list li::before {
  background: var(--violet);
}

.page-contact .contact-scope__link {
  align-self: flex-start;
  margin-top: 1.4rem;
}

/* ---------- 沟通边界（唯一高饱和焦点） ---------- */

.page-contact .contact-guard {
  background: linear-gradient(180deg, rgba(255, 176, 32, 0.055) 0%, rgba(255, 176, 32, 0) 68%);
  border-top: 1px solid var(--c-hair);
  border-bottom: 1px solid var(--c-hair);
}

.page-contact .contact-guard__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-contact .contact-guard__title {
  margin: 0 0 clamp(0.9rem, 2vw, 1.25rem);
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: var(--fs-h2);
  line-height: 1.15;
  color: var(--text-title);
}

.page-contact .contact-guard__text {
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.85;
}

.page-contact .contact-guard__callout {
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-sm);
  background: var(--amber-soft);
}

.page-contact .contact-guard__details {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-contact .contact-guard__list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.7rem;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

.page-contact .contact-guard__list strong {
  color: var(--amber);
  font-weight: 500;
}

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

.page-contact .contact-guard__media .media__frame {
  border: 1px solid var(--amber-line);
}

@media (min-width: 900px) {
  .page-contact .contact-guard__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-contact .contact-guard__media {
    position: sticky;
    top: 6rem;
  }
}

/* ---------- 邮件建议 ---------- */

.page-contact .contact-mail__grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-contact .contact-mail__head .section__note {
  max-width: 32em;
}

.page-contact .contact-tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-hair-strong);
}

.page-contact .contact-tip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem) 0;
  border-bottom: 1px solid var(--c-hair-strong);
}

.page-contact .contact-tip__num {
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--teal);
  letter-spacing: 0.08em;
}

.page-contact .contact-tip__title {
  margin: 0 0 0.4rem;
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--text-title);
}

.page-contact .contact-tip__text {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

@media (min-width: 900px) {
  .page-contact .contact-mail__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: clamp(2.5rem, 6vw, 5rem);
  }

  .page-contact .contact-mail__head {
    position: sticky;
    top: 6rem;
  }
}

/* ---------- 备案与主体 ---------- */

.page-contact .contact-filing__list {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--c-hair-strong);
}

.page-contact .contact-filing__item {
  display: grid;
  gap: 0.5rem;
  padding: clamp(1rem, 2.6vw, 1.5rem) 0;
  border-bottom: 1px solid var(--c-hair-strong);
}

.page-contact .contact-filing__key {
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.page-contact .contact-filing__val {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--text-body);
  overflow-wrap: anywhere;
}

.page-contact .contact-filing__val.mono {
  font-size: clamp(0.95rem, 2.6vw, 1.1rem);
  color: var(--text-title);
  letter-spacing: 0.02em;
}

@media (min-width: 760px) {
  .page-contact .contact-filing__item {
    grid-template-columns: minmax(0, 10rem) minmax(0, 1fr);
    align-items: baseline;
    gap: clamp(1.5rem, 4vw, 3rem);
  }
}

.page-contact .contact-filing__note {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  max-width: 40em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-muted);
}

/* ---------- 末尾入口 ---------- */

.page-contact .contact-next__inner {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding: clamp(1.75rem, 4.5vw, 3rem);
  border: 1px solid var(--c-hair);
  border-radius: var(--radius-lg);
  background: var(--ink-panel);
}

.page-contact .contact-next__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: var(--fs-h3);
  line-height: 1.25;
  color: var(--text-title);
}

.page-contact .contact-next__text {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-body);
}

.page-contact .contact-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 900px) {
  .page-contact .contact-next__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-contact .contact-next__links {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .code--copy {
    transition: none;
  }
}
<<<END>>>