.page-contact {
  --contact-cut: 16px;
  --contact-lead: clamp(20px, 3vw, 30px);
}

.page-contact .contact-hero {
  padding: clamp(18px, 3vw, 32px) 0 clamp(28px, 4.5vw, 52px);
}

.page-contact .contact-hero__frame {
  position: relative;
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  padding: clamp(22px, 3.4vw, 46px);
  background:
    radial-gradient(95% 130% at 0% 0%, rgba(224, 31, 39, 0.22), transparent 58%),
    radial-gradient(85% 120% at 100% 100%, rgba(37, 245, 192, 0.10), transparent 62%),
    linear-gradient(155deg, var(--ink-800) 0%, var(--ink-900) 55%, var(--ink-950) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  animation: contact-rise 260ms var(--ease) both;
}

.page-contact .contact-hero__frame::before {
  content: "";
  position: absolute;
  inset: 20px auto 20px 12px;
  width: 1px;
  background: repeating-linear-gradient(180deg, var(--red) 0 10px, transparent 10px 24px);
  opacity: 0.6;
  pointer-events: none;
}

.page-contact .contact-hero__copy {
  padding-left: clamp(8px, 1.4vw, 16px);
}

.page-contact .contact-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(29px, 6vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  max-width: 34em;
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--ink-950);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(37, 245, 192, 0.13) 0 1px, transparent 1px 38px),
    repeating-linear-gradient(90deg, rgba(37, 245, 192, 0.13) 0 1px, transparent 1px 38px);
  pointer-events: none;
}

.page-contact .contact-hero__stamp {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-950);
  background: var(--mint);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

@media (min-width: 920px) {
  .page-contact .contact-hero__frame {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

.page-contact .contact-body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

@media (min-width: 900px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
  }
}

.page-contact .index-rail {
  align-self: start;
  padding-top: 14px;
  border-top: 3px solid var(--red);
}

@media (min-width: 900px) {
  .page-contact .index-rail {
    position: sticky;
    top: 92px;
  }
}

.page-contact .index-rail__link {
  display: block;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .index-rail__link:hover,
.page-contact .index-rail__link:focus-visible {
  color: var(--paper);
  background: var(--ink-800);
  border-left-color: var(--violet);
}

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

.page-contact .contact-section {
  padding-block: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .contact-section h2 {
  margin: 8px 0 12px;
  font-family: var(--font-sans);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .contact-lede {
  max-width: 40em;
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-lede a,
.page-contact .contact-footnote a,
.page-contact .partner-submit__note a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-lede a:hover,
.page-contact .contact-footnote a:hover,
.page-contact .partner-submit__note a:hover {
  color: var(--violet);
}

/* 三条渠道 */
.page-contact .channel-grid {
  display: grid;
  gap: var(--gap);
  padding-bottom: 30px;
}

@media (min-width: 780px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-panel:nth-child(2) {
    transform: translateY(24px);
  }

  .page-contact .channel-panel:nth-child(3) {
    transform: translateY(10px);
  }
}

.page-contact .channel-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 26px;
  background: linear-gradient(168deg, var(--ink-700) 0%, var(--ink-800) 72%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
}

.page-contact .channel-panel:nth-child(1) {
  --accent: var(--mint);
}

.page-contact .channel-panel:nth-child(2) {
  --accent: var(--red);
}

.page-contact .channel-panel:nth-child(3) {
  --accent: var(--violet);
}

.page-contact .channel-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent, var(--red));
}

.page-contact .channel-panel__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-dim);
}

.page-contact .channel-panel h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .channel-panel__value {
  margin: 0;
  padding: 9px 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--accent, var(--mint));
  background: rgba(7, 13, 24, 0.55);
  border: 1px dashed var(--line);
  word-break: break-all;
}

.page-contact .channel-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 服务时段 */
.page-contact .hours-board {
  display: grid;
  gap: var(--gap);
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--mint);
}

@media (min-width: 760px) {
  .page-contact .hours-board {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

.page-contact .hours-list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .hours-row {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .hours-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .hours-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mint);
}

.page-contact .hours-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .hours-note {
  display: grid;
  gap: 12px;
  padding: 16px 18px 18px;
  background: linear-gradient(180deg, rgba(255, 154, 46, 0.11), transparent 78%);
  border: 1px solid rgba(255, 154, 46, 0.3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-contact .hours-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .hours-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mint);
}

.page-contact .hours-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(37, 245, 192, 0.16);
}

.page-contact .hours-note .btn {
  justify-self: start;
}

/* 地址 */
.page-contact .address-card {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  padding: clamp(18px, 3vw, 30px);
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(0deg, rgba(38, 53, 90, 0.7) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, rgba(38, 53, 90, 0.7) 0 1px, transparent 1px 40px);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

@media (min-width: 780px) {
  .page-contact .address-card {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: center;
  }
}

.page-contact .address-line {
  margin: 0 0 14px;
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 800;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .address-note {
  margin: 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .address-card__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-contact .address-card__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.95);
}

/* 留言板步骤 */
.page-contact .board-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 4px;
}

.page-contact .board-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px dashed var(--line-soft);
}

.page-contact .board-steps li::before {
  content: counter(step, decimal-leading-zero);
  display: grid;
  place-items: center;
  width: 38px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ink-950);
  background: var(--mint);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-contact .board-steps strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .board-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-footnote {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted-dim);
  border-left: 2px solid var(--line);
}

/* 合作 */
.page-contact .partner-details {
  border: 1px solid var(--line);
  border-bottom: 0;
  background: var(--ink-800);
}

.page-contact .partner-details:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-contact .partner-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

.page-contact .partner-details summary:hover,
.page-contact .partner-details summary:focus-visible {
  color: var(--violet);
  background: var(--ink-700);
}

.page-contact .partner-details summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--violet);
}

.page-contact .partner-details[open] summary {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .partner-details[open] summary::after {
  content: "–";
}

.page-contact .partner-details__body {
  padding: 14px 18px 18px;
}

.page-contact .partner-details__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .partner-submit {
  margin-top: clamp(20px, 3vw, 28px);
  padding: clamp(18px, 2.6vw, 24px);
  background: linear-gradient(150deg, rgba(124, 92, 255, 0.14), transparent 70%), var(--ink-900);
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
}

.page-contact .partner-submit h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .partner-submit__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .partner-submit__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .partner-submit__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 2px;
  background: var(--violet);
}

.page-contact .partner-submit__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 收尾 */
.page-contact .contact-closing {
  padding-bottom: 0;
}

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

@keyframes contact-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__frame {
    animation: none;
  }

  .page-contact * {
    transition-duration: 1ms !important;
  }
}
<<<END>>>