.page-contact {
  background: var(--paper);
  color: var(--ink);
}

/* ============ 面包屑 ============ */
.page-contact .breadcrumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(20px, 3vw, 36px) clamp(38px, 6vw, 76px);
  background:
    linear-gradient(180deg, rgba(94, 156, 139, .14), rgba(244, 239, 226, 0) 58%),
    var(--paper);
  overflow: hidden;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-contact .contact-hero__lead h1 {
  margin: .34em 0 .5em;
  font-size: clamp(2.05rem, 8vw, 4.4rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-contact .contact-hero__lead .lead {
  margin: 0;
  max-width: 46ch;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--deep);
}

.page-contact .contact-hero__channels {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .channel {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px) clamp(18px, 2.4vw, 26px) clamp(18px, 2.4vw, 26px) clamp(22px, 3vw, 30px);
  background: var(--card);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

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

.page-contact .channel--primary {
  background: var(--deep);
}

.page-contact .channel--primary::before {
  background: var(--coral);
}

.page-contact .channel__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .18em;
  color: var(--celadon);
}

.page-contact .channel--primary .channel__label {
  color: var(--data);
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 6.4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.012em;
  color: var(--deep);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel--primary .channel__value {
  color: var(--card);
}

.page-contact .channel__value--mail {
  font-size: clamp(1.02rem, 4.3vw, 1.8rem);
}

.page-contact .channel__hint {
  margin: 12px 0 0;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-contact .channel--primary .channel__hint {
  color: var(--mist);
}

.page-contact .contact-hero__figure {
  margin: 0;
  overflow: hidden;
  background: var(--deep);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

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

.page-contact .contact-hero__figure figcaption {
  padding: 14px 20px 18px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .05em;
  color: var(--mist);
}

/* ============ 响应时段（深色带） ============ */
.page-contact .contact-band {
  position: relative;
  background: var(--deep);
  color: var(--paper);
  overflow: hidden;
}

.page-contact .contact-band::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -110px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(108, 196, 214, .3), transparent 72%);
  pointer-events: none;
}

.page-contact .contact-band__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .contact-band .eyebrow {
  color: var(--data);
}

.page-contact .contact-band .section__title {
  margin: .35em 0 .55em;
  color: var(--card);
}

.page-contact .contact-band .lead {
  margin: 0;
  max-width: 48ch;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .band-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(216, 229, 225, .2);
}

.page-contact .band-list li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 4px 18px;
  padding: 12px 4px;
  background: var(--deep);
}

.page-contact .band-list__key {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--data);
}

.page-contact .band-list__val {
  font-size: .98rem;
  font-weight: 700;
  color: var(--card);
}

.page-contact .contact-band__figure {
  margin: 0;
  background: rgba(6, 20, 33, .5);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  overflow: hidden;
}

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

.page-contact .contact-band__figure figcaption {
  padding: 14px 20px 18px;
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ============ 合作场景（分段切换） ============ */
.page-contact .contact-scenes {
  background: var(--paper);
}

.page-contact .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .tabs__tab {
  appearance: none;
  font: inherit;
  font-size: .94rem;
  font-weight: 700;
  color: var(--deep);
  background: var(--card);
  border: 0;
  padding: 11px 20px;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background-color .18s ease, color .18s ease;
}

.page-contact .tabs__tab[aria-selected="true"] {
  background: var(--celadon);
  color: var(--card);
}

.page-contact .tabs__tab:hover {
  background: var(--mist);
}

.page-contact .tabs__tab[aria-selected="true"]:hover {
  background: var(--celadon);
}

.page-contact .tabs__tab:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--coral);
}

.page-contact .tabs__panel {
  padding: clamp(22px, 3.4vw, 36px);
  background: var(--card);
  border-left: 5px solid var(--celadon);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-contact .tabs__panel[hidden] {
  display: none;
}

.page-contact .tabs__panel h3 {
  margin: 0 0 12px;
  font-size: var(--h3);
  font-weight: 800;
  color: var(--deep);
}

.page-contact .tabs__panel p {
  margin: 0;
  max-width: 62ch;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .scene-points {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .scene-points li {
  position: relative;
  padding-left: 24px;
  line-height: 1.72;
  color: var(--deep);
}

.page-contact .scene-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 11px;
  height: 2px;
  background: var(--coral);
}

/* ============ 合作流程 ============ */
.page-contact .contact-flow {
  background: linear-gradient(180deg, var(--paper), #EDE6D6);
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .flow__step {
  position: relative;
  padding: 26px 20px 22px;
  background: var(--card);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--celadon), var(--data));
}

.page-contact .flow__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .14em;
  color: var(--coral);
  border-bottom: 2px solid var(--coral);
  padding-bottom: 3px;
}

.page-contact .flow__title {
  margin: 16px 0 8px;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--deep);
}

.page-contact .flow__text {
  margin: 0 0 16px;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .flow__meta {
  display: block;
  padding-top: 12px;
  border-top: 1px dashed var(--mist);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .03em;
  color: var(--celadon);
}

/* ============ 到访与区域服务 ============ */
.page-contact .contact-visit {
  background: var(--paper);
}

.page-contact .visit-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .visit-card {
  padding: clamp(24px, 3.2vw, 34px);
  background: var(--deep);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-contact .visit-card .eyebrow {
  color: var(--data);
}

.page-contact .visit-card__addr {
  margin: 14px 0 16px;
  font-size: clamp(1.16rem, 2.6vw, 1.6rem);
  font-weight: 800;
  line-height: 1.5;
  color: var(--card);
}

.page-contact .visit-card__note {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .visit-region h2 {
  margin: 0 0 14px;
  font-size: var(--h2);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .visit-region p {
  margin: 0 0 20px;
  max-width: 60ch;
  line-height: 1.85;
  color: var(--deep);
}

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

/* ============ 常见合作问题 ============ */
.page-contact .contact-faq {
  background: var(--paper);
}

.page-contact .faq-list {
  display: grid;
  gap: 12px;
}

.page-contact .fold {
  background: var(--card);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-contact .fold__summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 18px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  line-height: 1.6;
  color: var(--deep);
}

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

.page-contact .fold__summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--coral);
}

.page-contact .fold[open] .fold__summary::after {
  content: "–";
}

.page-contact .fold__summary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 3px var(--coral);
}

.page-contact .fold__body {
  padding: 0 24px 22px;
}

.page-contact .fold__body p {
  margin: 0;
  max-width: 62ch;
  line-height: 1.85;
  color: var(--slate);
}

/* ============ 结尾行动区 ============ */
.page-contact .contact-cta {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.page-contact .contact-cta::before {
  content: "";
  position: absolute;
  left: -12%;
  bottom: -70%;
  width: 74%;
  height: 180%;
  background: linear-gradient(120deg, rgba(94, 156, 139, .38), transparent 66%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-contact .contact-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 3.6vw, 40px);
}

.page-contact .contact-cta .eyebrow {
  color: var(--amber);
}

.page-contact .contact-cta h2 {
  margin: .3em 0 .55em;
  font-size: var(--h2);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--card);
}

.page-contact .contact-cta > .shell p {
  margin: 0;
  max-width: 54ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-contact .contact-cta__box {
  padding: clamp(22px, 3vw, 30px);
  background: rgba(244, 239, 226, .07);
  border-left: 4px solid var(--coral);
}

.page-contact .contact-cta__strong {
  margin: 12px 0 8px !important;
  font-size: 1.16rem;
  font-weight: 800;
  color: var(--card) !important;
}

.page-contact .contact-cta__note {
  margin: 0 0 18px !important;
  font-size: .94rem;
  line-height: 1.75 !important;
  color: var(--mist) !important;
}

/* ============ 响应式 ============ */
@media (min-width: 600px) {
  .page-contact .contact-hero__channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    grid-template-areas:
      "lead figure"
      "channels figure";
    align-items: start;
  }

  .page-contact .contact-hero__lead {
    grid-area: lead;
  }

  .page-contact .contact-hero__channels {
    grid-area: channels;
  }

  .page-contact .contact-hero__figure {
    grid-area: figure;
  }

  .page-contact .contact-band__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-contact .visit-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .contact-cta__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-contact .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

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