.page-contact {
  --cut: 26px;
  --hair: 1px solid rgba(20, 17, 15, .14);
  --bamboo-lite: #9CC4AE;
  --paper-lite: rgba(247, 242, 232, .78);
  background: var(--paper-050);
  color: var(--ink-900);
  overflow-x: clip;
}

/* 面包屑 */
.page-contact .contact-crumb {
  padding: 18px 0 0;
}

.page-contact .contact-crumb .breadcrumb {
  font-size: 12px;
  letter-spacing: .04em;
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  padding: 26px 0 clamp(44px, 7vw, 76px);
  background: linear-gradient(180deg, var(--paper-100) 0%, var(--paper-050) 82%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(20, 17, 15, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 17, 15, .055) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 5.6vw, 3.8rem);
  line-height: 1.14;
  letter-spacing: -.01em;
}

.page-contact .contact-hero__title em {
  display: inline-block;
  font-style: normal;
  font-weight: 600;
  color: var(--cinnabar-600);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(.94rem, 1.7vw, 1.04rem);
  line-height: 1.88;
  color: var(--ink-600);
}

.page-contact .hero-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: var(--hair);
}

.page-contact .hero-facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 16px;
  padding: 11px 0;
  border-bottom: var(--hair);
}

.page-contact .hero-facts__k {
  flex: 0 0 84px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-600);
}

.page-contact .hero-facts__v {
  font-size: .93rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink-900);
}

/* 唯一通道卡片 */
.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper-050);
  box-shadow: var(--shadow-card);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .channel-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  filter: grayscale(.35);
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(20, 17, 15, .88) 0%, rgba(20, 17, 15, .95) 58%, rgba(178, 58, 47, .58) 100%);
}

.page-contact .channel-card__inner {
  position: relative;
  z-index: 1;
  padding: clamp(24px, 4vw, 44px);
}

.page-contact .channel-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .channel-card__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 4px rgba(224, 166, 60, .2);
}

.page-contact .channel-card__title {
  margin: 22px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 3.6vw, 2.05rem);
  letter-spacing: .02em;
}

.page-contact .channel-card__mail {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(.84rem, 2.6vw, 1.12rem);
  line-height: 1.5;
  color: var(--gold-500);
  word-break: break-all;
}

.page-contact .channel-card__desc {
  margin: 16px 0 0;
  font-size: .92rem;
  line-height: 1.86;
  color: var(--paper-lite);
}

.page-contact .channel-card .btn--gold {
  margin-top: 24px;
}

.page-contact .channel-card__foot {
  margin: 20px 0 0;
  padding-top: 15px;
  border-top: 1px solid rgba(247, 242, 232, .18);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.7;
  letter-spacing: .05em;
  color: rgba(247, 242, 232, .58);
}

/* 旧入口对照 */
.page-contact .contact-old__head {
  max-width: 46em;
}

.page-contact .contact-old__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 3.4vw, 2.25rem);
  line-height: 1.3;
}

.page-contact .contact-old__desc {
  margin: 14px 0 0;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--ink-600);
}

.page-contact .old-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-contact .old-item {
  padding: 18px 18px 16px;
  border: 1px dashed rgba(20, 17, 15, .24);
  background:
    repeating-linear-gradient(135deg, rgba(20, 17, 15, .05) 0 6px, transparent 6px 12px),
    var(--paper-050);
  color: rgba(70, 64, 58, .74);
  cursor: default;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .old-item:focus-visible {
  outline: 2px solid var(--ink-900);
  outline-offset: 2px;
  box-shadow: inset 0 0 0 2px var(--gold-500);
  border-color: rgba(20, 17, 15, .4);
}

.page-contact .old-item__name {
  display: block;
  font-size: .94rem;
  font-weight: 500;
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(20, 17, 15, .38);
}

.page-contact .old-item__state {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 8px;
  border: 1px solid rgba(20, 17, 15, .26);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-600);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .old-item:focus-visible .old-item__state {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--paper-050);
}

.page-contact .old-note {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--cinnabar-600);
  background: var(--cinnabar-100);
  color: var(--ink-700);
  font-size: .89rem;
  line-height: 1.78;
}

/* 咨询准备 + 回复状态 */
.page-contact .contact-prep__grid {
  display: grid;
  gap: 34px;
}

.page-contact .contact-prep__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 3.4vw, 2.25rem);
  line-height: 1.3;
}

.page-contact .contact-prep__desc {
  margin: 14px 0 0;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--ink-600);
}

.page-contact .prep-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 17px;
  background: var(--paper-100);
  border: var(--hair);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .prep-item:hover {
  border-color: rgba(20, 17, 15, .28);
}

.page-contact .prep-item:has(input:checked) {
  background: var(--gold-100);
  border-color: rgba(138, 90, 20, .38);
}

.page-contact .prep-item input {
  -webkit-appearance: none;
  appearance: none;
  display: grid;
  place-content: center;
  width: 19px;
  height: 19px;
  margin: 2px 0 0;
  border: 1px solid rgba(20, 17, 15, .42);
  background: var(--paper-050);
  cursor: pointer;
}

.page-contact .prep-item input::after {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--cinnabar-600);
  transform: scale(0);
  transition: transform 140ms var(--ease);
}

.page-contact .prep-item input:checked::after {
  transform: scale(1);
}

.page-contact .prep-item input:focus-visible {
  outline: 2px solid var(--ink-900);
  outline-offset: 2px;
  box-shadow: inset 0 0 0 2px var(--gold-500);
}

.page-contact .prep-item__t {
  display: block;
  font-size: .94rem;
  font-weight: 600;
  line-height: 1.6;
}

.page-contact .prep-item__d {
  display: block;
  margin-top: 4px;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--ink-600);
}

.page-contact .prep-foot {
  margin: 20px 0 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--ink-600);
}

.page-contact .prep-foot a {
  color: var(--bamboo-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .prep-links {
  list-style: none;
  margin: 16px 0 0;
  padding: 16px 0 0;
  border-top: var(--hair);
  display: grid;
  gap: 8px;
}

.page-contact .prep-links li {
  position: relative;
  padding-left: 18px;
  font-size: .88rem;
  line-height: 1.7;
}

.page-contact .prep-links li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 1px;
  background: var(--cinnabar-600);
}

.page-contact .prep-links a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 17, 15, .26);
}

.page-contact .prep-links a:hover {
  border-bottom-color: var(--cinnabar-600);
  color: var(--cinnabar-700);
}

/* 状态面板 */
.page-contact .response-panel {
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--ink-900);
  color: var(--paper-050);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-contact .response-panel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--gold-500);
}

.page-contact .response-panel__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.28rem, 2.8vw, 1.7rem);
  line-height: 1.35;
}

.page-contact .stat-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(247, 242, 232, .16);
}

.page-contact .stat-grid li {
  padding: 15px 13px;
  background: var(--ink-900);
}

.page-contact .stat-grid__n {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.28rem, 3vw, 1.66rem);
  line-height: 1.1;
  color: var(--paper-050);
}

.page-contact .stat-grid__n small {
  margin-left: 2px;
  font-size: .54em;
  font-weight: 400;
  color: var(--gold-500);
}

.page-contact .stat-grid__k {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  line-height: 1.6;
  color: rgba(247, 242, 232, .6);
}

.page-contact .response-panel__scope {
  margin: 22px 0 0;
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(247, 242, 232, .82);
}

.page-contact .scope-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .scope-list li {
  position: relative;
  padding-left: 20px;
  font-size: .87rem;
  line-height: 1.72;
  color: rgba(247, 242, 232, .8);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 11px;
  height: 1px;
  background: var(--bamboo-lite);
}

/* 站点信息 */
.page-contact .contact-site {
  border-top: var(--hair);
}

.page-contact .contact-site__grid {
  display: grid;
  gap: 32px;
}

.page-contact .contact-site__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 3.4vw, 2.25rem);
  line-height: 1.3;
}

.page-contact .contact-site__desc {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--ink-600);
}

.page-contact .site-table {
  margin: 26px 0 0;
  border-top: var(--hair);
}

.page-contact .site-table__row {
  display: grid;
  gap: 3px;
  padding: 14px 0;
  border-bottom: var(--hair);
}

.page-contact .site-table dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--ink-600);
}

.page-contact .site-table dd {
  margin: 0;
  font-size: .94rem;
  line-height: 1.7;
  word-break: break-word;
}

.page-contact .site-table dd a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 17, 15, .26);
}

.page-contact .site-table dd a:hover {
  color: var(--cinnabar-700);
  border-bottom-color: var(--cinnabar-600);
}

.page-contact .site-note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--bamboo-600);
  font-size: .88rem;
  line-height: 1.8;
  color: var(--ink-600);
}

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

.page-contact .contact-site__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: grayscale(.2) contrast(1.02);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-contact .contact-site__cap {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--ink-600);
}

/* 响应式 */
@media (min-width: 560px) {
  .page-contact .site-table__row {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 640px) {
  .page-contact .old-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-site__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-crumb {
    padding-top: 22px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: 56px;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .response-panel {
    margin-top: 44px;
  }
}

@media (min-width: 1080px) {
  .page-contact .old-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .prep-item,
  .page-contact .prep-item input::after,
  .page-contact .old-item,
  .page-contact .old-item__state {
    transition: none;
  }
}