.page-contact {
  --cut-sm: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  --grid-cell: 96px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-contact__crumb {
  padding-top: 18px;
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 20px 0 52px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(69, 240, 194, .10), transparent 58%),
    var(--ink);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
  opacity: .28;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: 32px;
}

.page-contact .contact-hero__main h1 {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--paper-hi);
  max-width: 20ch;
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .contact-cards {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-contact .contact-card {
  position: relative;
  padding: 20px 20px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .contact-card--phone::after {
  background: var(--orange);
}

.page-contact .contact-card--hours::after {
  background: var(--caramel);
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.page-contact .contact-card__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.6vw, 1.32rem);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__value--warm {
  color: var(--orange);
  font-size: clamp(1.35rem, 6vw, 1.9rem);
  letter-spacing: .02em;
}

.page-contact .contact-card__value--mono {
  color: var(--paper-hi);
}

.page-contact .contact-card__hint {
  margin: 12px 0 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-contact .contact-hero__figure::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 52px;
  height: 52px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  pointer-events: none;
}

.page-contact .contact-hero__figure::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 52px;
  height: 52px;
  border-bottom: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
  pointer-events: none;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}

.page-contact .contact-hero__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  line-height: 1.65;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 通用区块头 ---------- */
.page-contact .contact-section-head {
  max-width: 60ch;
}

.page-contact .contact-section-head h2,
.page-contact .contact-coop h2,
.page-contact .contact-visit h2 {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-contact .contact-section-head__lead {
  margin: 16px 0 0;
  font-size: .96rem;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 数据反馈 ---------- */
.page-contact .contact-feedback {
  padding: 48px 0 52px;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-feedback h2 {
  color: var(--paper-hi);
}

.page-contact .contact-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-steps > li {
  padding: 20px 18px 24px;
  background: var(--ink);
}

.page-contact .contact-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .contact-steps h3 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.04rem;
  line-height: 1.4;
  color: var(--paper-hi);
}

.page-contact .contact-steps p {
  margin: 10px 0 0;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-tip {
  margin: 20px 0 0;
  padding: 6px 0 6px 16px;
  border-left: 2px solid var(--orange);
  font-size: .9rem;
  line-height: 1.75;
  color: var(--cyan-soft);
  overflow-wrap: anywhere;
}

/* ---------- 内容合作（米白纸面） ---------- */
.page-contact .contact-coop.s3-paper {
  padding: 48px 0 54px;
  color: var(--brown);
}

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

.page-contact .contact-coop .s3-eyebrow {
  color: var(--brick);
}

.page-contact .contact-coop__lead {
  margin: 16px 0 0;
  font-size: .96rem;
  line-height: 1.85;
  color: rgba(26, 21, 17, .78);
}

.page-contact .contact-flow {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-contact .contact-flow > li {
  padding-top: 18px;
  border-top: 1px solid rgba(26, 21, 17, .22);
  position: relative;
}

.page-contact .contact-flow > li::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--brick);
}

.page-contact .contact-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1;
  color: var(--caramel);
  letter-spacing: -.02em;
}

.page-contact .contact-flow h3 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--brown);
}

.page-contact .contact-flow p {
  margin: 10px 0 0;
  font-size: .9rem;
  line-height: 1.78;
  color: rgba(26, 21, 17, .74);
}

.page-contact .contact-coop__note {
  margin: 28px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(26, 21, 17, .28);
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.7;
  letter-spacing: .02em;
  color: rgba(26, 21, 17, .66);
}

/* ---------- 地址与到访 ---------- */
.page-contact .contact-visit {
  padding: 48px 0 52px;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-visit__grid {
  display: grid;
  gap: 30px;
}

.page-contact .contact-visit__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 32px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 32px 100%,
    var(--ink-2);
  padding: 10px;
}

.page-contact .contact-visit__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: .92;
}

.page-contact .contact-visit__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-visit h2 {
  color: var(--paper-hi);
}

.page-contact .contact-visit__lead {
  margin: 16px 0 0;
  font-size: .96rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .contact-addr {
  margin: 24px 0 0;
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--ink-2);
}

.page-contact .contact-addr__key {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-soft);
}

.page-contact .contact-addr__value {
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(1.05rem, 3.8vw, 1.3rem);
  line-height: 1.5;
  color: var(--paper-hi);
}
.page-contact .contact-details {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  background: rgba(14, 42, 34, .6);
}

.page-contact .contact-details summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 16px 48px 16px 18px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.5;
  color: var(--cyan);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

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

.page-contact .contact-details summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--orange);
  transition: transform .2s var(--ease);
}

.page-contact .contact-details[open] summary {
  color: var(--paper-hi);
  background: rgba(69, 240, 194, .07);
}

.page-contact .contact-details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
}

.page-contact .contact-details summary:hover {
  color: var(--paper-hi);
}

.page-contact .contact-details__list {
  list-style: none;
  margin: 0;
  padding: 4px 18px 20px;
  display: grid;
  gap: 12px;
  counter-reset: vc;
}

.page-contact .contact-details__list li {
  counter-increment: vc;
  position: relative;
  padding-left: 30px;
  font-size: .9rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .contact-details__list li::before {
  content: counter(vc, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--caramel);
}

/* ---------- 常见联络场景 ---------- */
.page-contact .contact-scenes {
  padding: 48px 0 56px;
  background: var(--ink-2);
}

.page-contact .contact-scenes h2 {
  color: var(--paper-hi);
}

.page-contact .contact-scenes__grid {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-contact .contact-scene {
  background: var(--ink);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  transition: border-color .2s var(--ease);
}

.page-contact .contact-scene[open] {
  border-color: var(--line);
}

.page-contact .contact-scene summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: block;
  padding: 18px 46px 18px 18px;
}

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

.page-contact .contact-scene summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--orange);
  transition: transform .2s var(--ease);
}

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

.page-contact .contact-scene__kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--cyan-soft);
}

.page-contact .contact-scene__title {
  display: block;
  margin-top: 8px;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: 1.22rem;
  line-height: 1.3;
  color: var(--paper-hi);
}

.page-contact .contact-scene__hint {
  display: block;
  margin-top: 8px;
  font-size: .84rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-scene__body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-contact .contact-scene__body p {
  margin: 0 0 10px;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-contact .contact-scenes__foot {
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  font-size: .9rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-scenes__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(69, 240, 194, .4);
  padding-bottom: 1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-scenes__foot a:hover,
.page-contact .contact-scenes__foot a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .contact-card--mail {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero {
    padding: 28px 0 68px;
  }
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, .88fr);
    gap: 44px;
    align-items: start;
  }
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  .page-contact .contact-card--mail {
    grid-column: span 2;
  }
  .page-contact .contact-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .contact-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
  .page-contact .contact-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
  .page-contact .contact-scenes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .page-contact .contact-feedback,
  .page-contact .contact-coop.s3-paper,
  .page-contact .contact-visit,
  .page-contact .contact-scenes {
    padding-top: 62px;
    padding-bottom: 68px;
  }
}

@media (min-width: 1120px) {
  .page-contact .contact-cards {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
  .page-contact .contact-card--mail {
    grid-column: span 1;
  }
  .page-contact .contact-card--hours {
    grid-column: span 2;
  }
  .page-contact .contact-hero__figure {
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-details summary::after,
  .page-contact .contact-scene summary::after,
  .page-contact .contact-details summary,
  .page-contact .contact-scene,
  .page-contact .contact-scenes__foot a {
    transition: none;
  }
}
</main>