.page-contact {
  background: var(--c-ink);
  color: var(--c-mist);
  overflow-x: clip;
}

.page-contact h2,
.page-contact h3 {
  color: var(--c-mist);
}

/* ---------- 首屏 ---------- */
.page-contact .c-hero {
  position: relative;
  padding-block: clamp(44px, 10vw, 100px) clamp(36px, 6vw, 72px);
  overflow: hidden;
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 88% 6%, var(--teal-soft), transparent 62%),
    radial-gradient(90% 70% at 6% 96%, var(--amber-soft), transparent 60%);
}

.page-contact .c-hero__shell {
  position: relative;
  z-index: 1;
}

.page-contact .c-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: end;
}

.page-contact .c-hero__title {
  margin: 14px 0 0;
  font-size: clamp(52px, 13.5vw, 108px);
  line-height: 0.92;
  font-weight: 900;
  letter-spacing: -0.035em;
}

.page-contact .c-hero__title-accent {
  color: var(--c-teal);
}

.page-contact .c-hero__lead {
  max-width: 32em;
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: clamp(16px, 2.1vw, 18px);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-contact .c-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .c-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-hero__visual {
  position: relative;
}

.page-contact .c-hero__media {
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px var(--line-mid);
}

.page-contact .c-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .c-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 26, 21, 0.05) 24%, rgba(7, 26, 21, 0.9) 100%);
}

.page-contact .c-hero__panel {
  margin-top: 16px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-mid);
  border-left: 2px solid var(--c-teal);
  background: var(--c-glass);
}

.page-contact .c-hero__panel-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--c-slate);
}

.page-contact .c-hero__panel-time {
  margin: 8px 0 10px;
  font-size: clamp(32px, 7vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-teal);
}

.page-contact .c-hero__panel-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-slate);
}

/* ---------- 章节头 ---------- */
.page-contact .c-sec-head {
  max-width: 44em;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-contact .c-sec-head--tight {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .c-sec-title {
  margin: 10px 0 12px;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .c-sec-lead {
  margin: 0;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.8;
  color: var(--c-slate);
}

/* ---------- 合作方向 ---------- */
.page-contact .c-coop__grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-contact .c-coop__item {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border-top: 2px solid var(--c-teal);
  background: var(--c-ink-2);
}

.page-contact .c-coop__item--b {
  border-top-color: var(--c-amber);
  background: var(--c-panel);
}

.page-contact .c-coop__item--c {
  border-top-color: var(--c-slate);
}

.page-contact .c-coop__no {
  display: block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-teal);
}

.page-contact .c-coop__item--b .c-coop__no {
  color: var(--c-amber);
}

.page-contact .c-coop__item--c .c-coop__no {
  color: var(--c-slate);
}

.page-contact .c-coop__item h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 23px);
  letter-spacing: -0.01em;
}

.page-contact .c-coop__item p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-contact .c-coop__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-line);
  opacity: 0.75;
}

.page-contact .c-coop__foot {
  max-width: 52em;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-slate);
}

.page-contact .c-coop__foot a,
.page-contact .c-flow__foot a,
.page-contact .c-brief__aside-note a {
  color: var(--c-teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease;
}

.page-contact .c-coop__foot a:hover,
.page-contact .c-coop__foot a:focus-visible,
.page-contact .c-flow__foot a:hover,
.page-contact .c-flow__foot a:focus-visible,
.page-contact .c-brief__aside-note a:hover,
.page-contact .c-brief__aside-note a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 联系渠道 ---------- */
.page-contact .c-channels {
  background: var(--c-ink-2);
  border-block: 1px solid var(--line-soft);
}

.page-contact .c-channels__grid {
  display: grid;
  gap: clamp(26px, 4.5vw, 48px);
}

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

.page-contact .c-channels__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .c-channels__caption {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-amber);
}

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

.page-contact .c-channel {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .c-channel__key {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-slate);
}

.page-contact .c-channel__val {
  font-size: clamp(16px, 2.3vw, 19px);
  line-height: 1.5;
  color: var(--c-mist);
  overflow-wrap: anywhere;
}

.page-contact .c-channel__val a {
  color: var(--c-teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease;
}

.page-contact .c-channel__val a:hover,
.page-contact .c-channel__val a:focus-visible {
  border-bottom-color: currentColor;
}

.page-contact .c-channel__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-contact .c-details {
  margin-top: 20px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--c-amber);
  background: var(--c-glass);
}

.page-contact .c-details__summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--c-mist);
  cursor: pointer;
  list-style: none;
}

.page-contact .c-details__summary::-webkit-details-marker {
  display: none;
}

.page-contact .c-details__summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-amber);
}

.page-contact .c-details[open] .c-details__summary::after {
  content: "−";
}

.page-contact .c-details__body {
  padding: 0 16px 16px;
}

.page-contact .c-details__body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-contact .c-details__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 来函建议 ---------- */
.page-contact .c-brief__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .c-brief__list {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
}

.page-contact .c-brief__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .c-brief__no {
  grid-row: 1 / span 2;
  font-size: 26px;
  line-height: 1.1;
  color: var(--c-teal);
  opacity: 0.85;
}

.page-contact .c-brief__item h3 {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 19px);
}

.page-contact .c-brief__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-contact .c-brief__aside {
  align-self: start;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-mid);
  border-top: 2px solid var(--c-amber);
  background: var(--c-panel);
}

.page-contact .c-brief__aside-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-amber);
}

.page-contact .c-brief__aside-mail {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.4vw, 19px);
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.page-contact .c-brief__aside-mail a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid var(--c-teal);
}

.page-contact .c-brief__aside-note {
  margin: 0 0 12px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-contact .c-brief__aside-note:last-child {
  margin-bottom: 0;
}

/* ---------- 沟通流程 ---------- */
.page-contact .c-flow__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-contact .c-flow__step {
  padding: clamp(20px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .c-flow__no {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--c-amber);
}

.page-contact .c-flow__step h3 {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.4vw, 21px);
}

.page-contact .c-flow__step p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

.page-contact .c-flow__foot {
  max-width: 52em;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

/* ---------- 站点信息 ---------- */
.page-contact .c-siteinfo {
  padding-block: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line-soft);
  background: var(--c-ink);
}

.page-contact .c-siteinfo__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 28px;
}

.page-contact .c-siteinfo__text {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--c-slate);
}

.page-contact .c-siteinfo__text--dim {
  color: var(--c-line);
  opacity: 0.62;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .c-channel {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 4px 22px;
    align-items: baseline;
  }

  .page-contact .c-channel__key {
    grid-row: 1 / span 2;
  }

  .page-contact .c-channel__val {
    grid-column: 2;
  }

  .page-contact .c-channel__note {
    grid-column: 2;
  }
}

@media (min-width: 820px) {
  .page-contact .c-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .c-coop__item--b {
    margin-top: clamp(22px, 3.6vw, 48px);
  }

  .page-contact .c-coop__item--c {
    margin-top: clamp(44px, 7vw, 96px);
  }

  .page-contact .c-brief__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .c-channels__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-contact .c-flow__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(18px, 2.6vw, 32px);
    border-top: none;
  }

  .page-contact .c-flow__step {
    border-top: 1px solid var(--line-mid);
    border-bottom: none;
  }
}

@media (min-width: 960px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-contact .c-hero__panel {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    margin-top: 0;
  }
}
<<<END>>>