.page-contact {
  --pc-radius: var(--radius-md);
  --pc-gap: 1.4rem;
  --pc-signal: var(--orange-500);
  padding-top: calc(var(--header-h) + 1.25rem);
  padding-bottom: 4.5rem;
  color: var(--paper-050);
  background:
    radial-gradient(115% 55% at 88% 2%, rgba(255, 138, 61, 0.13), transparent 62%),
    radial-gradient(90% 50% at 0% 42%, rgba(199, 255, 62, 0.07), transparent 60%),
    linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 58%, var(--ink-950) 100%);
}

.page-contact .content-shell {
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: var(--pc-gap);
  margin-top: 1.4rem;
}

.page-contact .contact-hero__body {
  min-width: 0;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 8.4vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
  font-weight: 900;
  margin: 0.6rem 0 1rem;
}

.page-contact .contact-hero__title span {
  display: block;
  color: var(--lime-400);
}

.page-contact .contact-hero__lead {
  max-width: 46ch;
  color: var(--mist-300);
  font-size: 1rem;
  line-height: 1.8;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.4rem 0 1.6rem;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--mist-300);
}

.page-contact .contact-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding-left: 0.9rem;
  border-left: 1px solid var(--line-500);
}

.page-contact .contact-hero__facts li:first-child {
  padding-left: 0;
  border-left: 0;
}

.page-contact .contact-hero__facts .num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--lime-400);
}

.page-contact .contact-hero__panel {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: 0;
  background: var(--panel-800);
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
  box-shadow: 0 18px 40px -32px rgba(0, 0, 0, 0.9);
}

.page-contact .contact-hero__media {
  position: relative;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.72);
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(3, 21, 14, 0) 24%, var(--panel-800) 100%);
}

.page-contact .contact-hero__panel-inner {
  padding: 0.2rem 1.15rem 1.3rem;
}

.page-contact .contact-hero__panel .panel__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mist-300);
  margin: 0 0 0.7rem;
}

.page-contact .contact-hero__label {
  margin: 0 0 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mist-300);
}

.page-contact .contact-hero__mail {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 800;
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 255, 62, 0.4);
  word-break: break-all;
}

.page-contact .contact-hero__mail:hover,
.page-contact .contact-hero__mail:focus-visible {
  color: var(--lime-200);
  border-bottom-color: var(--lime-200);
}

.page-contact .contact-hero__list {
  margin: 1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-500);
  display: grid;
  gap: 0.7rem;
  font-size: 0.86rem;
}

.page-contact .contact-hero__list dt {
  color: var(--mist-300);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.15rem;
}

.page-contact .contact-hero__list dd {
  margin: 0;
  color: var(--paper-050);
}

.page-contact .contact-hero__list dd.num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* ---------- 通用小节头 ---------- */
.page-contact .section-head {
  max-width: 60ch;
  margin-bottom: 1.5rem;
}

.page-contact .section-head h2,
.page-contact .collab__head h2,
.page-contact .reply__head h2,
.page-contact .mail-section__intro h2,
.page-contact .channel-stack__title,
.page-contact .contact-next__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.16;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  margin: 0.5rem 0 0.8rem;
  color: var(--paper-050);
}

.page-contact .section-head p,
.page-contact .collab__head p,
.page-contact .reply__head p,
.page-contact .mail-section__intro p {
  color: var(--mist-300);
  font-size: 0.92rem;
  line-height: 1.8;
  margin: 0 0 0.7rem;
}

/* ---------- 反馈类型 + 渠道 ---------- */
.page-contact .desk {
  margin-top: 3.5rem;
}

.page-contact .desk-grid {
  display: grid;
  gap: 1.6rem;
}

.page-contact .feedback-types {
  display: grid;
  gap: 0.8rem;
  min-width: 0;
}

.page-contact .feedback-card {
  position: relative;
  min-width: 0;
  padding: 1.05rem 1.1rem 1.1rem;
  background: linear-gradient(160deg, var(--panel-800), rgba(10, 58, 39, 0.55));
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .feedback-card::after {
  content: "";
  position: absolute;
  left: 1.1rem;
  bottom: 0;
  width: 34px;
  height: 2px;
  background: var(--lime-400);
  opacity: 0.55;
}

.page-contact .feedback-card:hover,
.page-contact .feedback-card:focus-within {
  border-color: var(--edge-700);
  transform: translateY(-2px);
}

.page-contact .feedback-card__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--orange-500);
  margin: 0 0 0.55rem;
}

.page-contact .feedback-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-050);
}

.page-contact .feedback-card p {
  margin: 0 0 0.7rem;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--mist-300);
}

.page-contact .feedback-card .feedback-card__need {
  margin: 0;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--line-500);
  font-size: 0.78rem;
  color: var(--lime-200);
  line-height: 1.6;
}

.page-contact .channel-stack {
  position: relative;
  min-width: 0;
  display: grid;
  gap: 0.8rem;
  align-content: start;
  padding-left: 1.1rem;
}

.page-contact .channel-stack::before {
  content: "";
  position: absolute;
  left: 0.28rem;
  top: 2.4rem;
  bottom: 2.4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--orange-500), rgba(255, 138, 61, 0.12));
}

.page-contact .channel-media {
  margin-bottom: 0.4rem;
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
  overflow: hidden;
}

.page-contact .channel-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.8);
}

.page-contact .channel-stack__title {
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  margin: 0 0 0.2rem;
}

.page-contact .channel-card {
  position: relative;
  padding: 1rem 1.1rem;
  background: rgba(6, 37, 26, 0.9);
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: -1.02rem;
  top: 1.45rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--orange-500);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.16);
}

.page-contact .channel-card__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--mist-300);
  margin: 0 0 0.4rem;
}

.page-contact .channel-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper-050);
}

.page-contact .channel-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-contact .channel-card .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--lime-200);
}

.page-contact .channel-card__link {
  display: inline-block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 255, 62, 0.4);
  word-break: break-all;
}

.page-contact .channel-card__link:hover,
.page-contact .channel-card__link:focus-visible {
  color: var(--lime-200);
}

.page-contact .channel-stack__note {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 邮件结构 ---------- */
.page-contact .mail-section {
  display: grid;
  gap: 1.6rem;
  margin-top: 3.5rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--line-500);
}

.page-contact .mail-section__intro {
  min-width: 0;
}

.page-contact .mail-section__intro .num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--lime-200);
}

.page-contact .mail-template {
  min-width: 0;
  padding: 1.1rem 1.1rem 1.25rem;
  background: linear-gradient(200deg, var(--panel-800), rgba(3, 21, 14, 0.9));
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
}

.page-contact .mail-template .panel__index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--orange-500);
  margin: 0 0 0.9rem;
}

.page-contact .mail-template__row {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.7rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-500);
}

.page-contact .mail-template__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .mail-template__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--lime-400);
  line-height: 1.5;
}

.page-contact .mail-template__row h3 {
  margin: 0 0 0.3rem;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--paper-050);
}

.page-contact .mail-template__row p {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 合作 ---------- */
.page-contact .collab {
  margin-top: 3.5rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--line-500);
}

.page-contact .collab__head {
  max-width: 66ch;
}

.page-contact .collab-list {
  list-style: none;
  margin: 1.4rem 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .collab-item {
  min-width: 0;
  padding: 1rem 1.1rem;
  background: rgba(16, 84, 58, 0.22);
  border: 1px solid var(--line-500);
  border-left: 3px solid var(--lime-400);
  border-radius: var(--pc-radius);
}

.page-contact .collab-item__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--lime-200);
  margin: 0 0 0.4rem;
}

.page-contact .collab-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper-050);
}

.page-contact .collab-item p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.78;
  color: var(--mist-300);
}

.page-contact .collab__cta {
  margin: 0;
  max-width: 68ch;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-contact .collab__cta a {
  margin-left: 0.4rem;
  color: var(--orange-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, 0.5);
  font-weight: 700;
}

.page-contact .collab__cta a:hover,
.page-contact .collab__cta a:focus-visible {
  color: #ffb07a;
}

/* ---------- 后续流程 ---------- */
.page-contact .reply {
  margin-top: 3.5rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--line-500);
}

.page-contact .reply__head {
  max-width: 62ch;
}

.page-contact .reply-steps {
  list-style: none;
  margin: 1.4rem 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .reply-steps li {
  position: relative;
  min-width: 0;
  padding: 1rem 1.1rem 1.05rem;
  background: var(--ink-900);
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
}

.page-contact .reply-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(199, 255, 62, 0.45);
  margin-bottom: 0.6rem;
}

.page-contact .reply-steps h3 {
  margin: 0 0 0.35rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--paper-050);
}

.page-contact .reply-steps p {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.76;
  color: var(--mist-300);
}

.page-contact .reply__note {
  margin: 0;
  max-width: 66ch;
  padding: 0.85rem 1rem;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--lime-200);
  background: rgba(199, 255, 62, 0.07);
  border-left: 3px solid var(--lime-400);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---------- 相关入口 ---------- */
.page-contact .contact-next {
  margin-top: 3.5rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--line-500);
}

.page-contact .contact-next__title {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  margin-bottom: 1.2rem;
}

.page-contact .contact-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-contact .contact-next__list li {
  min-width: 0;
  padding: 0.95rem 1.05rem;
  border: 1px solid var(--line-500);
  border-radius: var(--pc-radius);
  background: rgba(6, 37, 26, 0.55);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .contact-next__list li:hover,
.page-contact .contact-next__list li:focus-within {
  border-color: var(--edge-700);
  background: rgba(16, 84, 58, 0.35);
}

.page-contact .contact-next__list a {
  display: inline-block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--lime-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(199, 255, 62, 0.35);
}

.page-contact .contact-next__list a:hover,
.page-contact .contact-next__list a:focus-visible {
  color: var(--lime-200);
}

.page-contact .contact-next__list p {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .feedback-types {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .reply-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .collab-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-next__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-contact {
    --pc-gap: 2.2rem;
    padding-top: calc(var(--header-h) + 2rem);
  }

  .page-contact .contact-hero {
    grid-template-columns: 1.18fr 0.82fr;
    align-items: start;
    margin-top: 1.8rem;
  }

  .page-contact .contact-hero__panel {
    margin-top: 0.6rem;
  }

  .page-contact .mail-section {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 2.4rem;
  }

  .page-contact .desk-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.2rem;
    align-items: start;
  }

  .page-contact .desk {
    margin-top: 4.5rem;
  }

  .page-contact .collab-item:nth-child(2) {
    margin-top: 1.4rem;
  }

  .page-contact .reply-steps li:nth-child(2) {
    margin-top: 1.1rem;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero__title {
    font-size: clamp(3.2rem, 5.4vw, 4.8rem);
  }

  .page-contact .feedback-card {
    padding: 1.25rem 1.3rem 1.3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .feedback-card,
  .page-contact .contact-next__list li {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>