.page-contact {
  --c-pad: clamp(38px, 6vw, 82px);
  --c-gap: clamp(18px, 3vw, 34px);
  background: var(--ink);
  color: var(--chalk);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-contact *,
.page-contact *::before,
.page-contact *::after { box-sizing: border-box; }

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .015em;
  margin: 0;
}

.page-contact p { margin: 0; }

.page-contact img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-contact .breadcrumb { margin-bottom: clamp(20px, 3vw, 34px); }

/* ---------- Hero ---------- */
.page-contact .c-hero {
  padding: clamp(20px, 4vw, 38px) 0 clamp(34px, 5vw, 66px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(92, 122, 99, .38), transparent 62%),
    var(--ink-deep);
  border-bottom: 1px solid var(--line-mid);
}

.page-contact .c-hero__grid {
  display: grid;
  gap: var(--c-gap);
  align-items: stretch;
}

.page-contact .c-hero__copy .eyebrow { margin-bottom: 14px; }

.page-contact .c-hero h1 {
  font-size: clamp(29px, 6.2vw, 58px);
  letter-spacing: .02em;
  max-width: 17em;
}

.page-contact .c-hero__lead {
  margin-top: clamp(16px, 2.4vw, 24px);
  font-size: clamp(15px, 1.6vw, 17px);
  color: rgba(242, 239, 231, .82);
  max-width: 44em;
}

.page-contact .c-hero__facts {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-contact .c-hero__facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-hero__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
  min-width: 76px;
}

.page-contact .c-hero__v {
  font-size: 15px;
  font-weight: 600;
  color: var(--chalk);
}

.page-contact .c-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .c-hero__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
  border: 1px solid var(--line-mid);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-contact .c-hero__panel img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
  filter: saturate(.8);
}

.page-contact .c-hero__panel-body {
  position: relative;
  padding: clamp(18px, 3vw, 32px);
  background: linear-gradient(to top, rgba(5, 8, 6, .96) 12%, rgba(5, 8, 6, .55) 60%, rgba(5, 8, 6, .1));
  border-top: 1px solid rgba(255, 107, 26, .45);
}

.page-contact .c-hero__panel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-contact .c-hero__panel-mail {
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.6vw, 24px);
  color: var(--lemon);
  margin-top: 10px;
  word-break: break-word;
  letter-spacing: -.01em;
}

.page-contact .c-hero__panel-note {
  margin-top: 10px;
  font-size: 13.5px;
  color: rgba(242, 239, 231, .74);
  max-width: 34em;
}

.page-contact .c-hero__panel-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 26, .5);
  padding-bottom: 2px;
}

.page-contact .c-hero__panel-link:hover { color: var(--lemon); }

/* ---------- Section shell ---------- */
.page-contact .c-section {
  padding: var(--c-pad) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-section__head {
  max-width: 46em;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-contact .c-section__head .eyebrow { margin-bottom: 12px; }

.page-contact .c-section__head .section__title {
  font-size: clamp(22px, 3.6vw, 34px);
  color: var(--chalk);
}

.page-contact .section__lead {
  margin-top: 14px;
  font-size: clamp(14.5px, 1.6vw, 16px);
  color: rgba(242, 239, 231, .76);
}

/* ---------- 01 合作方向 ---------- */
.page-contact .c-steps {
  border-top: 1px solid var(--line-mid);
}

.page-contact .c-step {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background .25s var(--ease);
}

.page-contact .c-step[open] {
  background: linear-gradient(90deg, rgba(255, 107, 26, .09), rgba(255, 107, 26, 0) 62%);
}

.page-contact .c-step__sum {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 12px;
  align-items: baseline;
  padding: 16px 12px;
  cursor: pointer;
  list-style: none;
}

.page-contact .c-step__sum::-webkit-details-marker { display: none; }
.page-contact .c-step__sum::marker { content: ""; }

.page-contact .c-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
  letter-spacing: .08em;
}

.page-contact .c-step__name {
  font-family: var(--font-head);
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 700;
  color: var(--chalk);
}

.page-contact .c-step__hint {
  grid-column: 2;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .c-step__body {
  padding: 0 12px 20px;
  display: grid;
  gap: 10px;
}

.page-contact .c-step__body p {
  font-size: 14.5px;
  color: rgba(242, 239, 231, .8);
}

/* ---------- 02 联络方式 ---------- */
.page-contact .c-contact__grid {
  display: grid;
  gap: 1px;
  background: var(--line-mid);
  border: 1px solid var(--line-mid);
}

.page-contact .c-mail,
.page-contact .c-phone,
.page-contact .c-addr {
  position: relative;
  background: var(--ink-deep);
  padding: clamp(18px, 3.4vw, 34px);
}

.page-contact .c-mail::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--signal);
}

.page-contact .c-mail__label,
.page-contact .c-phone__label,
.page-contact .c-addr__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-contact .c-mail__value {
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.2vw, 38px);
  letter-spacing: -.015em;
  color: var(--lemon);
  margin: 12px 0;
  word-break: break-word;
  line-height: 1.2;
}

.page-contact .c-mail__note {
  font-size: 14px;
  color: rgba(242, 239, 231, .76);
  max-width: 30em;
}

.page-contact .c-phone__value {
  font-family: var(--font-mono);
  font-size: clamp(23px, 4.6vw, 36px);
  color: var(--chalk);
  margin: 12px 0 10px;
  letter-spacing: .02em;
}

.page-contact .c-phone__note {
  font-size: 13.5px;
  color: rgba(242, 239, 231, .7);
}

.page-contact .c-addr__value {
  margin-top: 12px;
  font-size: 15px;
  color: var(--chalk);
  line-height: 1.65;
}

/* ---------- 03 回复时间 ---------- */
.page-contact .c-split {
  display: grid;
  gap: var(--c-gap);
}

.page-contact .c-split__main .eyebrow { margin-bottom: 12px; }

.page-contact .c-split__main .section__title {
  font-size: clamp(22px, 3.6vw, 34px);
  color: var(--chalk);
}

.page-contact .c-split__text {
  margin-top: 16px;
  font-size: 14.5px;
  color: rgba(242, 239, 231, .72);
}

.page-contact .c-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-mid);
  align-self: start;
}

.page-contact .c-line {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-line__k {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--moss);
  font-family: var(--font-mono);
}

.page-contact .c-line__v {
  font-size: 14.5px;
  color: rgba(242, 239, 231, .84);
}

/* ---------- 04 提交信息建议 ---------- */
.page-contact .c-hints {
  display: grid;
  gap: 1px;
  background: var(--line-mid);
  border: 1px solid var(--line-mid);
}

.page-contact .c-hint {
  background: var(--ink);
  padding: clamp(16px, 2.6vw, 24px);
}

.page-contact .c-hint__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--signal);
  margin-bottom: 8px;
}

.page-contact .c-hint__v {
  font-size: 14px;
  color: rgba(242, 239, 231, .8);
}

/* ---------- 05 沟通路径 ---------- */
.page-contact .c-path {
  display: grid;
  gap: var(--c-gap);
  align-items: start;
}

.page-contact .c-path__media {
  border: 1px solid var(--line-mid);
  background: var(--steel);
  overflow: hidden;
}

.page-contact .c-path__media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .c-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-mid);
}

.page-contact .c-path__step {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-path__num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--lemon);
  letter-spacing: .06em;
}

.page-contact .c-path__name {
  font-size: 16px;
  color: var(--chalk);
  margin-bottom: 5px;
}

.page-contact .c-path__body p {
  font-size: 14px;
  color: rgba(242, 239, 231, .75);
}

/* ---------- 后续链接 ---------- */
.page-contact .c-next {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px dashed var(--line-mid);
}

.page-contact .c-next__lead {
  font-size: 14px;
  color: var(--mist);
  letter-spacing: .03em;
}

.page-contact .c-next__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .c-next__link {
  display: inline-block;
  font-size: 14.5px;
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mid);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .c-next__link:hover,
.page-contact .c-next__link:focus-visible {
  color: var(--signal);
  border-color: var(--signal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .c-hints { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-contact .c-step__sum { grid-template-columns: 48px 1fr; padding: 18px 14px; }
  .page-contact .c-step__body { padding: 0 14px 24px 62px; }
  .page-contact .c-path__step { grid-template-columns: 48px 1fr; }
  .page-contact .c-next__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(24px, 3.4vw, 52px);
  }

  .page-contact .c-hero__panel { min-height: 420px; }

  .page-contact .c-contact__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    grid-template-areas:
      "mail phone"
      "mail addr";
  }

  .page-contact .c-mail { grid-area: mail; display: flex; flex-direction: column; justify-content: center; }
  .page-contact .c-phone { grid-area: phone; }
  .page-contact .c-addr { grid-area: addr; }

  .page-contact .c-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(28px, 4vw, 64px);
  }

  .page-contact .c-step__sum {
    grid-template-columns: 58px minmax(0, 300px) 1fr;
    gap: 6px 18px;
    padding: 20px 16px;
  }

  .page-contact .c-step__hint { grid-column: 3; text-align: right; align-self: center; }

  .page-contact .c-step__body {
    padding: 0 16px 26px 92px;
    max-width: 62em;
  }

  .page-contact .c-path {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: clamp(26px, 3.6vw, 56px);
  }
}

@media (min-width: 1024px) {
  .page-contact .c-hints { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-contact .c-next__list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

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