.page-contact {
  --contact-gap: clamp(1.25rem, 3vw, 2rem);
  --contact-radius: var(--r-md);
}

.page-contact .section {
  padding-block: clamp(2.25rem, 5vw, 3.75rem);
}

.page-contact .section-head {
  max-width: 46rem;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-contact .section-head__lede {
  margin-top: 0.75rem;
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(1rem, 3vw, 2rem) clamp(2rem, 5vw, 3.5rem);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(58% 62% at 12% 0%, rgba(34, 245, 230, 0.12), transparent 68%),
    radial-gradient(48% 52% at 92% 18%, rgba(138, 92, 255, 0.16), transparent 72%),
    repeating-linear-gradient(90deg, rgba(169, 184, 216, 0.05) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

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

.page-contact .hero-actions {
  margin-top: 1.5rem;
  gap: 0.75rem;
  flex-wrap: wrap;
}

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

.page-contact .contact-hero__media .media-frame {
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -32px rgba(34, 245, 230, 0.45);
}

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

/* ---------- 信息条 ---------- */
.page-contact .signal-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  overflow: hidden;
}

.page-contact .signal-strip__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.95rem 1rem;
  background: var(--panel);
  min-width: 0;
}

.page-contact .signal-strip__label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .signal-strip__value {
  font-family: var(--f-mono);
  font-size: 0.95rem;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .signal-strip__value--mail {
  color: var(--neon);
}

/* ---------- 工作台 ---------- */
.page-contact .workbench {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .workbench__rail {
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  background: linear-gradient(160deg, rgba(13, 19, 40, 0.95), rgba(7, 11, 26, 0.6));
  padding: 1.15rem;
}

.page-contact .workbench__rail-title {
  font-family: var(--f-cond);
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  color: var(--steel);
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}

.page-contact .rail-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-contact .rail-list__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 0.88rem;
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.page-contact .rail-list__link:hover,
.page-contact .rail-list__link:focus-visible {
  background: rgba(34, 245, 230, 0.1);
  border-color: var(--neon);
  color: var(--neon);
  outline: none;
}

.page-contact .rail-list__num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--violet);
}

.page-contact .workbench__rail-note {
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--steel);
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--line-soft);
}

.page-contact .workbench__panels {
  display: grid;
  gap: 0.9rem;
}

.page-contact .fb-panel {
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  background: var(--panel);
  scroll-margin-top: calc(var(--topbar-h) + 1.25rem);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-contact .fb-panel[open] {
  border-color: rgba(34, 245, 230, 0.45);
  background: linear-gradient(150deg, rgba(34, 245, 230, 0.08), rgba(13, 19, 40, 0.9) 55%);
}

.page-contact .fb-panel__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--mist);
}

.page-contact .fb-panel__head::-webkit-details-marker {
  display: none;
}

.page-contact .fb-panel__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: 1.15rem;
  color: var(--neon);
  line-height: 1;
}

.page-contact .fb-panel[open] .fb-panel__head::after {
  content: "–";
}

.page-contact .fb-panel__num {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--violet);
}

.page-contact .fb-panel__title {
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.page-contact .fb-panel__chip {
  flex: none;
}

.page-contact .fb-panel__body {
  padding: 0 1.1rem 1.25rem;
  border-top: 1px solid var(--line-soft);
  margin-top: -0.1rem;
  padding-top: 1rem;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-contact .fb-panel__body p {
  margin: 0 0 0.85rem;
}

.page-contact .fb-list {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-contact .fb-list li {
  position: relative;
  padding-left: 1.15rem;
  line-height: 1.75;
}

.page-contact .fb-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--deep);
}

.page-contact .fb-note {
  margin: 0;
  font-size: 0.84rem;
  color: var(--steel);
  padding: 0.7rem 0.9rem;
  border-left: 2px solid var(--magma);
  background: rgba(255, 106, 61, 0.07);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
}

.page-contact .fb-note a {
  color: var(--neon);
}

/* ---------- 渠道 ---------- */
.page-contact .channels {
  position: relative;
}

.page-contact .channels::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(70% 90% at 85% 0%, rgba(138, 92, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.page-contact .channels__grid {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-contact .channel-card {
  background: var(--void);
  padding: 1.15rem 1.15rem 1.3rem;
  min-width: 0;
}

.page-contact .channel-card--signal {
  background: linear-gradient(140deg, rgba(255, 106, 61, 0.12), var(--void) 70%);
}

.page-contact .channel-card__label {
  font-family: var(--f-cond);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 0.6rem;
}

.page-contact .channel-card__value {
  font-family: var(--f-mono);
  font-size: clamp(1rem, 3.4vw, 1.4rem);
  line-height: 1.35;
  color: var(--neon);
  margin: 0 0 0.7rem;
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--sm {
  font-size: clamp(0.95rem, 2.6vw, 1.1rem);
  color: var(--mist);
}

.page-contact .channel-card--signal .channel-card__value {
  color: var(--magma);
}

.page-contact .channel-card__note {
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--steel);
  margin: 0;
}

.page-contact .channels__legal {
  margin: 1.1rem 0 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--glitch);
}

/* ---------- 提交前准备 ---------- */
.page-contact .prep__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}

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

.page-contact .prep__media .media-frame {
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

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

.page-contact .prep__lede {
  margin-top: 0.7rem;
  font-size: 0.95rem;
}

.page-contact .checklist {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  counter-reset: prep;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: rgba(13, 19, 40, 0.72);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .checklist__item strong {
  color: var(--mist);
  font-weight: 600;
}

.page-contact .checklist__mark {
  width: 18px;
  height: 18px;
  margin-top: 0.25rem;
  border-radius: 6px;
  border: 1px solid var(--neon);
  position: relative;
  box-shadow: 0 0 12px -2px rgba(34, 245, 230, 0.55);
}

.page-contact .checklist__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--neon);
  border-bottom: 2px solid var(--neon);
  transform: rotate(40deg);
}

/* ---------- 处理节奏 ---------- */
.page-contact .rhythm__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: step;
}

.page-contact .rhythm__step {
  position: relative;
  padding: 1.1rem 1.15rem 1.2rem 3.4rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--contact-radius);
  background: linear-gradient(160deg, rgba(13, 19, 40, 0.95), rgba(7, 11, 26, 0.55));
}

.page-contact .rhythm__num {
  position: absolute;
  left: 1.1rem;
  top: 1.1rem;
  font-family: var(--f-mono);
  font-size: 1.15rem;
  color: var(--violet);
  letter-spacing: 0.04em;
}

.page-contact .rhythm__title {
  margin: 0 0 0.4rem;
  font-family: var(--f-cond);
  font-size: 1.02rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .rhythm__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 问答 ---------- */
.page-contact .faq__list {
  display: grid;
  gap: 0.75rem;
}

.page-contact .faq__item {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: var(--panel);
  padding: 0 1.05rem;
  transition: border-color 0.25s ease;
}

.page-contact .faq__item[open] {
  border-color: rgba(138, 92, 255, 0.5);
}

.page-contact .faq__q {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.95rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--mist);
}

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

.page-contact .faq__q::before {
  content: "Q";
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--violet);
}

.page-contact .faq__a {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--steel);
  border-left: 1px solid var(--line);
}

/* ---------- 收尾 ---------- */
.page-contact .next-band {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(120deg, rgba(34, 245, 230, 0.08), rgba(138, 92, 255, 0.12));
  padding: clamp(1.2rem, 3vw, 1.9rem);
}

.page-contact .next-band__title {
  margin: 0 0 1rem;
  font-family: var(--f-serif);
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--mist);
}

.page-contact .next-band__links {
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .signal-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .rhythm__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-contact .workbench {
    grid-template-columns: 245px minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .workbench__rail {
    position: sticky;
    top: calc(var(--topbar-h) + 1.25rem);
  }

  .page-contact .rail-list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-contact .rail-list__link {
    width: 100%;
    justify-content: flex-start;
  }

  .page-contact .channels__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .prep__grid {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: center;
  }

  .page-contact .rhythm__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.85rem;
  }

  .page-contact .rhythm__step {
    padding: 3.1rem 1.1rem 1.2rem;
  }

  .page-contact .rhythm__num {
    top: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .rail-list__link,
  .page-contact .fb-panel,
  .page-contact .faq__item {
    transition: none;
  }
}
<<<END>>>