.page-contact {
  --pc-card: rgba(22, 36, 61, .82);
  --pc-line: rgba(169, 180, 196, .18);
  --pc-line-strong: rgba(169, 180, 196, .34);
  background:
    radial-gradient(1100px 560px at 82% -10%, rgba(232, 163, 61, .13), transparent 62%),
    var(--ink-950);
  color: var(--paper-100);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact .eyebrow {
  color: var(--amber-500);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.page-contact .breadcrumb {
  padding: 18px 0 0;
  font-size: 13px;
}

.page-contact #channels,
.page-contact #process,
.page-contact #checklist,
.page-contact #faq,
.page-contact #visit {
  scroll-margin-top: 110px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(34px, 6vw, 72px);
}

.page-contact .contact-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .contact-hero-copy h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(29px, 6.4vw, 52px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper-100);
}

.page-contact .lede {
  max-width: 52ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--slate-300);
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .stat-num {
  display: block;
  font-size: clamp(23px, 3.4vw, 31px);
  line-height: 1.1;
  color: var(--amber-500);
}

.page-contact .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-300);
}

.page-contact .contact-hero-media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--pc-line-strong);
  background: var(--ink-800);
  box-shadow: var(--shadow-float);
  overflow: hidden;
}

.page-contact .contact-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-hero-media figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 46px 18px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--paper-100);
  background: linear-gradient(to top, rgba(11, 18, 32, .94), rgba(11, 18, 32, 0));
}

/* ---------- 主体双栏 ---------- */
.page-contact .contact-layout {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-contact .contact-head .contact-sub,
.page-contact .process-headline .contact-sub,
.page-contact .prep-head .contact-sub {
  max-width: 56ch;
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .section-title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 30px);
  line-height: 1.34;
  color: var(--paper-100);
}

/* ---------- 合作类型切换 ---------- */
.page-contact .coop-switch {
  margin-top: 24px;
}

.page-contact .coop-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-contact .coop-tabbar {
  display: flex;
  gap: 10px;
  padding: 4px 2px 14px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-contact .coop-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--pc-line-strong);
  background: var(--ink-900);
  color: var(--slate-300);
  font-size: 14.5px;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .coop-tab:hover {
  color: var(--paper-100);
  border-color: var(--amber-500);
}

.page-contact #coop-build:checked ~ .coop-tabbar [for="coop-build"],
.page-contact #coop-venue:checked ~ .coop-tabbar [for="coop-venue"],
.page-contact #coop-brand:checked ~ .coop-tabbar [for="coop-brand"],
.page-contact #coop-mobile:checked ~ .coop-tabbar [for="coop-mobile"] {
  color: var(--paper-100);
  background: rgba(242, 107, 78, .16);
  border-color: var(--coral-500);
  box-shadow: inset 0 0 0 1px rgba(242, 107, 78, .34);
}

.page-contact .coop-switch:has(#coop-build:focus-visible) [for="coop-build"],
.page-contact .coop-switch:has(#coop-venue:focus-visible) [for="coop-venue"],
.page-contact .coop-switch:has(#coop-brand:focus-visible) [for="coop-brand"],
.page-contact .coop-switch:has(#coop-mobile:focus-visible) [for="coop-mobile"] {
  outline: 2px solid var(--amber-500);
  outline-offset: 3px;
}

.page-contact .coop-panel {
  display: none;
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--radius-lg);
  background: var(--paper-100);
  color: var(--ink-deep);
}

.page-contact #coop-build:checked ~ .coop-panels #coop-panel-build,
.page-contact #coop-venue:checked ~ .coop-panels #coop-panel-venue,
.page-contact #coop-brand:checked ~ .coop-panels #coop-panel-brand,
.page-contact #coop-mobile:checked ~ .coop-panels #coop-panel-mobile {
  display: block;
  animation: pc-fade .22s var(--ease) both;
}

@keyframes pc-fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-contact .coop-panel h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.35;
  color: var(--ink-deep);
}

.page-contact .coop-for {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--amber-deep);
}

.page-contact .coop-panel ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-panel li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-deep);
}

.page-contact .coop-panel li::before {
  content: "›";
  position: absolute;
  left: 2px;
  top: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--coral-500);
}

.page-contact .coop-mail {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(27, 39, 64, .22);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------- 四步流程 ---------- */
.page-contact .contact-process {
  margin-top: clamp(38px, 6vw, 64px);
}

.page-contact .process-media {
  margin: 22px 0 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--pc-line);
  overflow: hidden;
}

.page-contact .process-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .process-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-contact .process-list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 14px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(to bottom, var(--amber-500), rgba(232, 163, 61, .06));
}

.page-contact .process-step {
  position: relative;
  margin-bottom: 14px;
}

.page-contact .process-step::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral-500);
  box-shadow: 0 0 0 4px rgba(242, 107, 78, .16);
}

.page-contact .process-step details {
  border-radius: var(--radius-md);
  border: 1px solid var(--pc-line);
  background: var(--pc-card);
  transition: border-color .2s var(--ease);
}

.page-contact .process-step details[open] {
  border-color: var(--pc-line-strong);
}

.page-contact .process-step summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  min-height: 44px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
}

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

.page-contact .process-step summary::after {
  content: "+";
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--coral-500);
}

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

.page-contact .step-num {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--amber-500);
}

.page-contact .step-title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  color: var(--paper-100);
}

.page-contact .step-hint {
  margin-left: auto;
  font-size: 12px;
  color: var(--slate-300);
}

.page-contact .step-body {
  display: grid;
  gap: 10px;
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .step-body p {
  margin: 0;
}

/* ---------- 右侧联系卡 ---------- */
.page-contact .contact-aside {
  display: grid;
  gap: 18px;
}

.page-contact .contact-card {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--pc-line-strong);
  background: linear-gradient(165deg, rgba(236, 168, 68, .14), rgba(22, 36, 61, .92) 42%);
  box-shadow: var(--shadow-float);
  backdrop-filter: blur(6px);
}

.page-contact .contact-card-title {
  margin: 10px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.38;
  color: var(--paper-100);
}

.page-contact .chan-item {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .chan-label {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--slate-300);
}

.page-contact .chan-value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .chan-value.mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
  color: var(--amber-200);
}

.page-contact .chan-copy {
  justify-self: start;
  margin-top: 4px;
  min-height: 36px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--pc-line-strong);
  background: transparent;
  color: var(--slate-300);
  font-family: var(--font-body);
  font-size: 12.5px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .chan-copy:hover {
  color: var(--paper-100);
  border-color: var(--amber-500);
}

.page-contact .chan-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pc-line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--slate-300);
}

.page-contact .contact-hours {
  padding: clamp(18px, 2.6vw, 24px);
  border-radius: var(--radius-md);
  border: 1px solid var(--pc-line);
  background: var(--ink-900);
}

.page-contact .contact-hours h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--paper-100);
}

.page-contact .hours-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate-300);
}

.page-contact .hours-list .mono {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 7px;
  border-radius: var(--radius-sm);
  background: rgba(232, 163, 61, .14);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--amber-500);
}

.page-contact .hours-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate-300);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--pc-line);
  background: var(--ink-900);
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .prep-item:hover {
  border-color: var(--pc-line-strong);
}

.page-contact .prep-item input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-contact .prep-check {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 7px;
  border: 1.5px solid var(--slate-600);
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .prep-item input:focus-visible ~ .prep-check {
  outline: 2px solid var(--amber-500);
  outline-offset: 2px;
}

.page-contact .prep-item input:checked ~ .prep-check {
  background: var(--coral-500);
  border-color: var(--coral-500);
}

.page-contact .prep-item input:checked ~ .prep-check::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(42deg);
}

.page-contact .prep-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-100);
}

.page-contact .prep-text strong {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--amber-500);
}

.page-contact .prep-item input:checked ~ .prep-text {
  color: var(--slate-300);
}

.page-contact .prep-tail {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .prep-tail a {
  color: var(--amber-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 常见问题 ---------- */
.page-contact .faq-layout {
  display: grid;
  gap: clamp(20px, 4vw, 44px);
}

.page-contact .faq-lead {
  margin-top: 14px;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-300);
}

.page-contact .faq-lead a {
  color: var(--amber-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-contact .faq-list details {
  border-radius: var(--radius-md);
  border: 1px solid var(--pc-line);
  background: var(--ink-900);
}

.page-contact .faq-list details[open] {
  border-color: var(--pc-line-strong);
  background: var(--ink-800);
}

.page-contact .faq-list summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.5;
  color: var(--paper-100);
}

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

.page-contact .faq-list summary::before {
  content: "?";
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--pc-line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber-500);
}

.page-contact .faq-list summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--coral-500);
}

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

.page-contact .faq-body {
  padding: 0 18px 18px 54px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-300);
}

.page-contact .faq-body p {
  margin: 0;
}

/* ---------- 底部信息带 ---------- */
.page-contact .contact-band {
  position: relative;
  margin-top: clamp(34px, 5vw, 60px);
  padding: clamp(32px, 5vw, 56px) 0;
  background: var(--ink-900);
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
  overflow: hidden;
}

.page-contact .contact-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(169, 180, 196, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 180, 196, .09) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(closest-side at 80% 28%, #000 20%, transparent 92%);
  mask-image: radial-gradient(closest-side at 80% 28%, #000 20%, transparent 92%);
  pointer-events: none;
}

.page-contact .contact-band::after {
  content: "";
  position: absolute;
  right: 14%;
  top: 30%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--amber-500);
  box-shadow: 0 0 0 7px rgba(232, 163, 61, .14), 0 0 28px rgba(232, 163, 61, .48);
  pointer-events: none;
}

.page-contact .band-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .band-addr {
  margin: 12px 0 14px;
  max-width: 26ch;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.8vw, 26px);
  line-height: 1.5;
  color: var(--paper-100);
}

.page-contact .band-copy {
  min-height: 40px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--amber-500);
  background: transparent;
  color: var(--amber-500);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-contact .band-copy:hover {
  background: var(--amber-500);
  color: var(--ink-950);
}

.page-contact .band-note {
  margin: 16px 0 0;
  max-width: 44ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .hours-track {
  position: relative;
  display: grid;
  gap: 20px;
  margin: 16px 0 0;
  padding: 0 0 0 24px;
  list-style: none;
}

.page-contact .hours-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(to bottom, var(--teal-400), rgba(46, 196, 182, .08));
}

.page-contact .hours-track li {
  position: relative;
  display: grid;
  gap: 4px;
}

.page-contact .track-dot {
  position: absolute;
  left: -24px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--teal-400);
  box-shadow: 0 0 0 4px rgba(46, 196, 182, .14);
}

.page-contact .track-label {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--teal-400);
}

.page-contact .track-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-300);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1.42fr) minmax(300px, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-contact .contact-aside {
    position: sticky;
    top: 96px;
  }

  .page-contact .band-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

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

  .page-contact .process-media {
    margin-top: 26px;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .page-contact .stat-num {
    display: inline;
    margin-right: 8px;
    font-size: 21px;
  }

  .page-contact .stat-label {
    display: inline;
  }

  .page-contact .faq-body {
    padding-left: 18px;
  }

  .page-contact .step-hint {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact #coop-build:checked ~ .coop-panels #coop-panel-build,
  .page-contact #coop-venue:checked ~ .coop-panels #coop-panel-venue,
  .page-contact #coop-brand:checked ~ .coop-panels #coop-panel-brand,
  .page-contact #coop-mobile:checked ~ .coop-panels #coop-panel-mobile {
    animation: none;
  }
}