.page-contact {
  --c-gap: clamp(1rem, 2.5vw, 2rem);
  --c-hair: 1px solid var(--line);
  --c-hair-soft: 1px solid var(--line-soft);
  background:
    radial-gradient(90% 55% at 100% 0%, rgba(47, 230, 214, .07), transparent 62%),
    radial-gradient(70% 45% at 0% 100%, rgba(242, 179, 74, .05), transparent 66%),
    var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  margin-bottom: 1.1rem;
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: .45rem;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  color: var(--graphite);
}

.page-contact .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .c-hero {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.25rem) 0 clamp(2.25rem, 6vw, 4rem);
  border-bottom: var(--c-hair-soft);
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(68vw, 760px);
  aspect-ratio: 1;
  background: linear-gradient(140deg, rgba(47, 230, 214, .17), rgba(242, 179, 74, .07) 52%, transparent 72%);
  clip-path: polygon(100% 0%, 100% 100%, 0% 0%);
  z-index: 0;
  pointer-events: none;
}

.page-contact .c-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: center;
}

@media (min-width: 920px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

.page-contact .c-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2.05rem, 6.8vw, 3.75rem);
  line-height: 1.04;
  letter-spacing: -.01em;
  margin: .55rem 0 .9rem;
  color: var(--paper);
}

.page-contact .c-hero .eyebrow {
  color: var(--cyan);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .76rem;
}

.page-contact .c-hero .lead {
  max-width: 48ch;
  margin: 0 0 1.5rem;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.78;
}

.page-contact .c-hero__quick {
  display: grid;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-hero__quick li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .75rem;
  padding: .6rem .9rem;
  border-left: 2px solid var(--cyan);
  background: rgba(22, 34, 61, .55);
}

.page-contact .c-hero__quick li:nth-child(2) {
  border-left-color: var(--amber);
}

.page-contact .c-hero__quicklabel {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-contact .c-hero__quick .mono {
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .c-hero__media .media-frame {
  border: var(--c-hair);
  background: var(--ink-deep);
  box-shadow: var(--shadow);
}

.page-contact .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-contact .section {
  position: relative;
  padding: clamp(2.25rem, 6vw, 4.25rem) 0;
  border-bottom: var(--c-hair-soft);
}

.page-contact .section__head {
  max-width: 64ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-contact .section__index {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1;
  margin-bottom: .4rem;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-cyan);
}

.page-contact .section__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  margin: 0;
  color: var(--paper);
}

.page-contact .section__sub {
  margin: .6rem 0 0;
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.75;
}

/* ---------- 01 渠道 ---------- */
.page-contact .c-channels__grid {
  display: grid;
  gap: clamp(.85rem, 2vw, 1.25rem);
}

@media (min-width: 720px) {
  .page-contact .c-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .c-channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .c-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  border: var(--c-hair);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 34, 61, .92), rgba(11, 18, 48, .72));
  box-shadow: var(--shadow);
}

.page-contact .c-channel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 3.2rem;
  height: 2px;
  background: var(--cyan);
}

.page-contact .c-channel--amber::before {
  background: var(--amber);
}

.page-contact .c-channel--green::before {
  background: var(--green);
}

.page-contact .c-channel__label {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .c-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.6vw, 1.22rem);
  line-height: 1.4;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .c-channel__text {
  margin: 0;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.72;
}

.page-contact .c-channel .copy-chip {
  align-self: flex-start;
  margin-top: auto;
}

.page-contact .c-dot {
  display: inline-block;
  width: .55rem;
  height: .55rem;
  margin-right: .5rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(79, 209, 165, .16);
  vertical-align: middle;
}

/* ---------- 02 反馈流程 ---------- */
.page-contact .c-steps {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.6rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 700px) {
  .page-contact .c-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-contact .c-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .c-step {
  position: relative;
  padding-top: 1.35rem;
  border-top: var(--c-hair);
}

.page-contact .c-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 2.6rem;
  height: 2px;
  background: var(--cyan);
  transition: width .32s ease, background .32s ease;
}

.page-contact .c-step:hover::before,
.page-contact .c-step:focus-within::before {
  width: 100%;
  background: var(--amber);
}

.page-contact .c-step__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .c-step__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.12rem, 2.4vw, 1.38rem);
  line-height: 1.24;
  margin: .4rem 0 .5rem;
  color: var(--paper);
}

.page-contact .c-step__text {
  margin: 0;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.72;
}

.page-contact .c-step__hint {
  margin: .7rem 0 0;
  padding-top: .6rem;
  border-top: 1px dashed var(--line-soft);
  color: var(--graphite);
  font-size: .82rem;
  line-height: 1.6;
  transition: color .3s ease;
}

.page-contact .c-step:hover .c-step__hint,
.page-contact .c-step:focus-within .c-step__hint {
  color: var(--amber);
}

/* ---------- 03 存档查证 ---------- */
.page-contact .c-archive__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: start;
}

@media (min-width: 940px) {
  .page-contact .c-archive__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .88fr);
  }
}

.page-contact .c-checklist {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .8rem;
  padding: .85rem 1rem;
  border: var(--c-hair-soft);
  background: rgba(5, 7, 15, .5);
  font-size: .93rem;
  line-height: 1.66;
  color: var(--paper);
}

.page-contact .c-checklist li::before {
  content: "";
  width: .5rem;
  height: .5rem;
  margin-top: .48rem;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-contact .c-checklist li:nth-child(even)::before {
  background: var(--amber);
}

.page-contact .c-archive__panel {
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  border: var(--c-hair);
  background: linear-gradient(180deg, rgba(22, 34, 61, .82), rgba(5, 7, 15, .6));
  box-shadow: var(--shadow);
}

.page-contact .c-archive__paneltitle {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  margin: 0 0 .7rem;
  color: var(--paper);
}

.page-contact .c-archive__panel > p {
  margin: 0 0 .8rem;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.74;
}

.page-contact .c-archive__panel .disclosure {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: .5rem;
  margin-top: 1rem;
  padding-top: .9rem;
  border-top: var(--c-hair-soft);
}

.page-contact .c-archive__panel .disclosure__btn {
  justify-self: start;
  padding: 0;
  background: none;
  border: 0;
  color: var(--cyan);
  font: inherit;
  font-size: .9rem;
  text-align: left;
  cursor: pointer;
}

.page-contact .c-archive__panel .disclosure__btn:hover,
.page-contact .c-archive__panel .disclosure__btn:focus-visible {
  color: var(--amber);
}

.page-contact .c-archive__panel .disclosure__icon {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: .95rem;
  transition: transform .25s ease;
}

.page-contact .c-archive__panel .disclosure__btn[aria-expanded="true"] ~ .disclosure__icon {
  transform: rotate(45deg);
}

.page-contact .c-archive__detail {
  grid-column: 1 / -1;
}

.page-contact .c-archive__detail p {
  margin: .6rem 0 0;
  color: var(--mist);
  font-size: .9rem;
  line-height: 1.72;
}

/* ---------- 04 本地服务 ---------- */
.page-contact .c-local__grid {
  display: grid;
  gap: clamp(1.25rem, 3.2vw, 2.75rem);
  align-items: center;
}

@media (min-width: 900px) {
  .page-contact .c-local__grid {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  }
}

.page-contact .c-local__media .media-frame {
  border: var(--c-hair);
  background:
    linear-gradient(180deg, rgba(5, 7, 15, .2), rgba(5, 7, 15, .8)),
    var(--ink-deep);
  box-shadow: var(--shadow);
}

.page-contact .c-local__body .lead {
  margin: 0 0 1.4rem;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.78;
}

.page-contact .c-facts {
  display: grid;
  gap: .7rem;
  margin: 0 0 1.4rem;
}

.page-contact .c-facts > div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: .75rem;
  padding-bottom: .7rem;
  border-bottom: var(--c-hair-soft);
}

.page-contact .c-facts dt {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .c-facts dd {
  margin: 0;
  font-size: .95rem;
  line-height: 1.68;
  color: var(--paper);
}

.page-contact .c-local__more {
  margin: 0;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.75;
}

.page-contact .c-local__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .c-local__more a:hover,
.page-contact .c-local__more a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

@media (max-width: 520px) {
  .page-contact .c-facts > div {
    grid-template-columns: minmax(0, 1fr);
    gap: .2rem;
  }
}

/* ---------- 05 常见反馈类型 ---------- */
.page-contact .c-topics {
  display: grid;
  gap: .6rem;
}

@media (min-width: 820px) {
  .page-contact .c-topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .c-topic {
  border: var(--c-hair-soft);
  background: rgba(22, 34, 61, .46);
  transition: border-color .25s ease, background .25s ease;
}

.page-contact .c-topic:hover {
  border-color: var(--line-cyan);
  background: rgba(22, 34, 61, .72);
}

.page-contact .c-topic:has(.c-topic__btn[aria-expanded="true"]) {
  border-color: var(--line-cyan);
  background: rgba(22, 34, 61, .88);
}

.page-contact .c-topic__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .85rem;
  width: 100%;
  padding: .95rem 1.05rem;
  background: none;
  border: 0;
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: color .2s ease;
}

.page-contact .c-topic__btn:hover,
.page-contact .c-topic__btn:focus-visible {
  color: var(--cyan);
}

.page-contact .c-topic__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .c-topic__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .c-topic__name {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-contact .c-topic__btn .disclosure__icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  transition: transform .25s ease;
}

.page-contact .c-topic__btn[aria-expanded="true"] .disclosure__icon {
  transform: rotate(45deg);
  color: var(--amber);
}

.page-contact .c-topic__panel {
  padding: .2rem 1.05rem 1.05rem;
}

.page-contact .c-topic__panel p {
  margin: 0;
  padding-top: .75rem;
  border-top: 1px dashed var(--line-soft);
  color: var(--mist);
  font-size: .91rem;
  line-height: 1.74;
}

/* ---------- 收尾 ---------- */
.page-contact .c-next {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  background:
    linear-gradient(120deg, rgba(47, 230, 214, .1), rgba(242, 179, 74, .07) 60%, transparent 100%),
    var(--ink-deep);
}

.page-contact .c-next__inner {
  display: grid;
  gap: 1.4rem;
  align-items: center;
}

@media (min-width: 860px) {
  .page-contact .c-next__inner {
    grid-template-columns: minmax(0, 1.2fr) auto;
    gap: 2rem;
  }
}

.page-contact .c-next__copy h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  margin: 0 0 .6rem;
  color: var(--paper);
}

.page-contact .c-next__copy p {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.78;
}

.page-contact .c-next__copy a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .c-next__copy a:hover,
.page-contact .c-next__copy a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-contact .c-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

@media (max-width: 480px) {
  .page-contact .c-next__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-step::before,
  .page-contact .c-step__hint,
  .page-contact .c-topic,
  .page-contact .disclosure__icon {
    transition: none;
  }
}
<<<END>>>