.page-contact {
  --contact-ease: cubic-bezier(.2, .7, .3, 1);
  color: var(--paper);
  font-family: var(--font-sans);
  background: var(--ink);
}

.page-contact .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 245, 208, .45);
  transition: border-color .18s linear, color .18s linear;
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(48px, 7vw, 100px);
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(120% 90% at 92% -6%, rgba(61, 245, 208, .14), transparent 58%),
    radial-gradient(90% 76% at -8% 100%, rgba(123, 77, 255, .12), transparent 62%),
    var(--ink);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(28, 58, 82, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 58, 82, .55) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(33px, 6vw, 62px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .hl {
  color: var(--cyan);
}

.page-contact .contact-hero .lede {
  max-width: 58ch;
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .channel-stack {
  display: grid;
  gap: 12px;
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 18px 16px 20px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-pop);
  transition: transform .2s var(--contact-ease), border-color .2s linear;
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--cyan);
}

.page-contact .channel:nth-child(2)::before { background: var(--epl); }
.page-contact .channel:nth-child(3)::before { background: var(--seriea); }
.page-contact .channel:nth-child(4)::before { background: var(--orange); }

.page-contact .channel:hover {
  transform: translate(-2px, -2px);
  border-color: var(--cyan);
}

.page-contact .channel__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-contact .channel__title {
  margin: 0 0 5px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .channel__desc {
  margin: 0 0 7px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .channel__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .channel:nth-child(4) .channel__meta { color: var(--orange); }

.page-contact .contact-hero__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .hero-figure {
  margin: 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--panel);
  overflow: hidden;
}

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

.page-contact .presence-panel {
  display: grid;
  gap: 9px;
  padding: 18px;
  background: var(--ink-deep);
  border: 2px solid var(--line);
  border-left: 5px solid var(--cyan);
}

.page-contact .presence-panel__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .presence-panel__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .presence-panel__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 段落头 ---------- */
.page-contact .section {
  padding: clamp(48px, 7vw, 100px) 0;
}

.page-contact .band-head {
  max-width: 720px;
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

.page-contact .band-head .section-title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .band-head__lede {
  margin: 0;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 响应节奏 ---------- */
.page-contact .contact-response {
  border-bottom: 2px solid var(--line);
}

.page-contact .shift-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--line);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-contact .shift {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 22px 18px;
  background: var(--panel);
}

.page-contact .shift__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .shift__value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-contact .shift:nth-child(4) .shift__value { color: var(--orange); }

.page-contact .shift__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 地址 ---------- */
.page-contact .contact-address {
  border-bottom: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 31, 51, .55), transparent 70%);
}

.page-contact .addr-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-contact .addr-copy .section-title {
  margin: 0 0 16px;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .addr-lede {
  margin: 0 0 26px;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .addr-list {
  margin: 0 0 22px;
  padding: 0;
  border-top: 2px solid var(--line);
}

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

.page-contact .addr-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .addr-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .addr-row:nth-child(2) dd {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2vw, 20px);
  letter-spacing: .01em;
}

.page-contact .addr-note {
  margin: 0;
  padding: 14px 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
  background: var(--ink-deep);
  border-left: 4px solid var(--orange);
}

.page-contact .addr-figure {
  margin: 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--panel);
  overflow: hidden;
}

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

.page-contact .addr-figure .media-frame__caption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 反馈流程 ---------- */
.page-contact .flow-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 44px);
  align-items: start;
}

.page-contact .flow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--line);
}

.page-contact .flow-step {
  position: relative;
  padding: 20px 0 20px 46px;
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-step__num {
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .flow-step h3 {
  margin: 0 0 7px;
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .form-preview {
  display: grid;
  gap: 16px;
  align-content: start;
  padding: 20px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-contact .form-preview__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .type-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-contact .type-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .type-switch label {
  display: inline-block;
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  background: var(--ink-deep);
  border: 2px solid var(--line);
  cursor: pointer;
  transition: color .16s linear, border-color .16s linear, background .16s linear;
}

.page-contact .type-switch label:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

.page-contact .type-switch input:checked + label {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-contact .type-switch input:focus-visible + label {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .type-hints {
  flex: 0 0 100%;
  width: 100%;
}

.page-contact .type-hint {
  display: none;
  margin: 0;
  padding: 14px 15px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--paper);
  background: var(--ink-deep);
  border-left: 4px solid var(--cyan);
}

.page-contact #type-load:checked ~ .type-hints .type-hint--load,
.page-contact #type-sync:checked ~ .type-hints .type-hint--sync,
.page-contact #type-doc:checked ~ .type-hints .type-hint--doc,
.page-contact #type-mobile:checked ~ .type-hints .type-hint--mobile {
  display: block;
}

.page-contact .field {
  display: grid;
  gap: 6px;
}

.page-contact .field__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .field__value {
  margin: 0;
  padding: 11px 13px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  background: var(--ink-deep);
  border: 1px dashed var(--line);
  word-break: break-word;
}

.page-contact .form-preview__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 合作 ---------- */
.page-contact .collab {
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(4, 16, 28, .85), transparent 65%);
}

.page-contact .collab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .collab-card {
  padding: 22px 20px;
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-pop);
}

.page-contact .collab-card__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .collab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .collab-list li {
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .collab-list__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-contact .collab-list--plain li {
  position: relative;
  padding-left: 16px;
}

.page-contact .collab-list--plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 2px;
  background: var(--orange);
}

.page-contact .collab-foot {
  margin: 24px 0 0;
  max-width: 76ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- FAQ ---------- */
.page-contact .faq-list {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--line);
}

.page-contact .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-contact .faq-item summary {
  position: relative;
  padding: 18px 40px 18px 0;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

.page-contact .faq-item summary::-webkit-details-marker { display: none; }

.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: transform .2s var(--contact-ease);
}

.page-contact .faq-item[open] summary::after {
  content: "−";
}

.page-contact .faq-item summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .faq-item p {
  margin: 0 0 20px;
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-tail {
  padding: clamp(44px, 6vw, 84px) 0;
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(61, 245, 208, .12), transparent 60%),
    var(--ink-deep);
}

.page-contact .contact-tail__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

.page-contact .contact-tail__copy h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .contact-tail__copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .shift-band {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-contact .addr-row {
    grid-template-columns: 150px 1fr;
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.12fr .88fr;
    align-items: start;
  }

  .page-contact .contact-hero__aside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-contact .addr-split {
    grid-template-columns: 1fr .92fr;
  }

  .page-contact .flow-split {
    grid-template-columns: 1fr .92fr;
  }

  .page-contact .contact-tail__inner {
    grid-template-columns: 1fr auto;
    gap: 36px;
  }
}

@media (min-width: 1040px) {
  .page-contact .shift-band {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .faq-item summary::after,
  .page-contact .type-switch label,
  .page-contact .inline-link {
    transition: none;
  }

  .page-contact .channel:hover {
    transform: none;
  }
}
<<<END>>>