.page-contact {
  --pc-radius: 28px;
  --pc-line: rgba(214, 227, 242, .16);
}

/* ============ 首屏：框景联系卡 ============ */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(20px, 3vw, 34px) clamp(56px, 7vw, 100px);
  background-image:
    radial-gradient(92% 120% at 88% 4%, rgba(20, 80, 127, .62), transparent 58%),
    radial-gradient(66% 88% at 4% 96%, rgba(37, 224, 198, .12), transparent 62%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-contact .contact-frame {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 40px);
  padding: clamp(30px, 4.4vw, 52px) clamp(22px, 3.4vw, 46px) clamp(26px, 3.8vw, 46px);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(37, 224, 198, .3);
  background:
    radial-gradient(120% 150% at 10% 0%, rgba(37, 224, 198, .14), transparent 58%),
    linear-gradient(155deg, rgba(11, 42, 74, .96), rgba(5, 18, 31, .98));
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-contact .contact-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 10px;
  background: repeating-linear-gradient(90deg, rgba(37, 224, 198, .5) 0 2px, transparent 2px 18px);
  opacity: .6;
  pointer-events: none;
}

.page-contact .contact-frame::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 10px;
  background: repeating-linear-gradient(180deg, rgba(255, 106, 24, .45) 0 2px, transparent 2px 20px);
  opacity: .5;
  pointer-events: none;
}

.page-contact .contact-frame__title {
  margin: 14px 0 0;
  font-size: clamp(36px, 6.2vw, 72px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: #ffffff;
}

.page-contact .contact-frame__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(233, 242, 251, .82);
}

.page-contact .contact-frame__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-contact .contact-frame__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .contact-frame__media img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

@media (min-width: 960px) {
  .page-contact .contact-frame {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: clamp(34px, 4.2vw, 68px);
  }
}

/* ============ 合作方向展签卡 ============ */
.page-contact .contact-directions {
  position: relative;
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .coop-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--pc-line);
  background: linear-gradient(160deg, rgba(11, 42, 74, .92), rgba(5, 18, 31, .95));
  transition: border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
  overflow: hidden;
}

.page-contact .coop-card:hover {
  border-color: rgba(37, 224, 198, .5);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.page-contact .coop-card:has(.coop-card__details[open]) {
  border-color: rgba(37, 224, 198, .62);
}

.page-contact .coop-card__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "num name toggle"
    "num who toggle";
  align-items: center;
  gap: 3px 16px;
  padding: 22px 22px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .coop-card__head:focus-visible {
  outline: 2px solid var(--aqua-glow);
  outline-offset: -4px;
  border-radius: var(--radius-lg);
}

.page-contact .coop-card__num {
  grid-area: num;
  align-self: start;
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  color: var(--aqua-glow);
  padding-top: 4px;
}

.page-contact .coop-card__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -.01em;
}

.page-contact .coop-card__who {
  grid-area: who;
  font-size: 13px;
  line-height: 1.55;
  color: rgba(233, 242, 251, .58);
}

.page-contact .coop-card__toggle {
  grid-area: toggle;
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(37, 224, 198, .5);
  flex: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-contact .coop-card__toggle::before,
.page-contact .coop-card__toggle::after {
  content: "";
  position: absolute;
  background: var(--aqua-glow);
  border-radius: 2px;
}

.page-contact .coop-card__toggle::before {
  left: 50%;
  top: 8px;
  bottom: 8px;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform .2s var(--ease);
}

.page-contact .coop-card__toggle::after {
  top: 50%;
  left: 8px;
  right: 8px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-contact .coop-card__details[open] .coop-card__toggle {
  background: rgba(37, 224, 198, .14);
  border-color: rgba(37, 224, 198, .8);
}

.page-contact .coop-card__details[open] .coop-card__toggle::before {
  transform: translateX(-50%) scaleY(0);
}

.page-contact .coop-card__panel {
  padding: 18px 22px 24px;
  border-top: 1px dashed var(--pc-line);
  animation: pc-fade .22s var(--ease);
}

.page-contact .coop-card__panel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(233, 242, 251, .78);
}

.page-contact .coop-card__meta {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
}

.page-contact .coop-card__meta > div {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.page-contact .coop-card__meta dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: rgba(37, 224, 198, .88);
}

.page-contact .coop-card__meta dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(233, 242, 251, .66);
}

@keyframes pc-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

@media (min-width: 700px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-contact .coop-card {
    grid-column: span 2;
  }
  .page-contact .coop-card:nth-child(4) {
    grid-column: 2 / span 2;
  }
  .page-contact .coop-card:nth-child(5) {
    grid-column: 4 / span 2;
  }
}

/* ============ 合作流程 ============ */
.page-contact .step-track {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .step {
  position: relative;
  padding: 24px 22px 26px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid rgba(18, 32, 47, .1);
  border-top: 3px solid var(--pulse-orange);
  box-shadow: 0 20px 40px -34px rgba(5, 18, 31, .85);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}

.page-contact .step__num {
  display: block;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--pulse-orange);
}

.page-contact .step__title {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--graphite);
}

.page-contact .step__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .step__time {
  display: inline-block;
  margin: 18px 0 0;
  padding: 5px 14px;
  border-radius: var(--pill);
  font-size: 12px;
  color: var(--harbor-blue);
  background: rgba(61, 139, 255, .1);
  border: 1px solid rgba(61, 139, 255, .24);
}

@media (hover: hover) and (min-width: 1000px) {
  .page-contact .step__time {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity .2s var(--ease), transform .2s var(--ease);
  }
  .page-contact .step:hover .step__time,
  .page-contact .step:focus-within .step__time {
    opacity: 1;
    transform: none;
  }
  .page-contact .step:hover {
    transform: translateY(-3px);
    box-shadow: 0 28px 54px -34px rgba(5, 18, 31, .9);
  }
}

@media (min-width: 760px) {
  .page-contact .step-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-contact .step-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ============ 联系入口 ============ */
.page-contact .contact-channels {
  background-image: radial-gradient(80% 110% at 12% 0%, rgba(20, 80, 127, .55), transparent 62%);
}

.page-contact .channel-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .channel-card {
  position: relative;
  padding: 28px 24px 26px;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(37, 224, 198, .3);
  background: linear-gradient(158deg, rgba(11, 42, 74, .88), rgba(5, 18, 31, .95));
  overflow: hidden;
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pulse-orange), var(--aqua-glow));
  opacity: .85;
}

.page-contact .channel-card:hover {
  border-color: rgba(37, 224, 198, .58);
  transform: translateY(-2px);
}

.page-contact .channel-card__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: rgba(37, 224, 198, .9);
}

.page-contact .channel-card__value {
  margin: 12px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 600;
  line-height: 1.55;
  color: #ffffff;
  word-break: break-word;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(233, 242, 251, .72);
}

.page-contact .channel-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 16px;
  border-left: 2px solid rgba(255, 106, 24, .6);
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(233, 242, 251, .6);
}

@media (min-width: 700px) {
  .page-contact .channel-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-contact .channel-board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 会员权益 ============ */
.page-contact .member-tabs {
  margin-top: clamp(26px, 3.6vw, 42px);
}

.page-contact .member-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-contact .member-tabs .tabs__tab {
  border-radius: var(--pill);
  border: 1px solid var(--line-mist);
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  padding: 10px 26px;
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .member-tabs .tabs__tab[aria-selected="true"] {
  background: linear-gradient(135deg, rgba(255, 106, 24, .14), rgba(37, 224, 198, .14));
  border-color: var(--pulse-orange);
  color: var(--pulse-orange);
}

.page-contact .member-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--signal-blue);
  outline-offset: 2px;
}

.page-contact .member-panel {
  padding: clamp(24px, 3vw, 38px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-mist);
  background: var(--paper);
  box-shadow: 0 26px 56px -46px rgba(5, 18, 31, .95);
}

.page-contact .member-panel__title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 800;
  color: var(--graphite);
  letter-spacing: -.01em;
}

.page-contact .member-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .member-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .member-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .72em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--aqua-glow);
  box-shadow: 0 0 0 4px rgba(37, 224, 198, .16);
}

.page-contact .member-panel__note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line-mist);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .member-feedback {
  margin-top: clamp(26px, 3.4vw, 40px);
  padding: clamp(22px, 2.8vw, 32px);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(20, 80, 127, .1), rgba(37, 224, 198, .08));
  border: 1px solid rgba(20, 80, 127, .16);
}

.page-contact .member-feedback__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--graphite);
}

.page-contact .member-feedback__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 68ch;
}

.page-contact .member-feedback__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-contact .member-feedback__links .pill {
  display: inline-block;
  text-decoration: none;
  border-radius: var(--pill);
  border: 1px solid rgba(20, 80, 127, .3);
  background: var(--paper);
  color: var(--harbor-blue);
  font-size: 14px;
  padding: 8px 20px;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .member-feedback__links .pill:hover {
  border-color: var(--pulse-orange);
  color: var(--pulse-orange);
  transform: translateY(-2px);
}

/* ============ 北京本地合作 ============ */
.page-contact .beijing-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-contact .beijing-grid__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-contact .beijing-grid__body .section__title {
  margin-top: 12px;
}

.page-contact .beijing-grid__lead {
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(233, 242, 251, .8);
  max-width: 52ch;
}

.page-contact .beijing-list {
  display: grid;
  gap: 18px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .beijing-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--pc-line);
  background: rgba(11, 42, 74, .5);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .beijing-list li:hover {
  border-color: rgba(37, 224, 198, .45);
  transform: translateY(-2px);
}

.page-contact .beijing-list__num {
  font-size: 18px;
  color: var(--gold-mark);
  line-height: 1.4;
}

.page-contact .beijing-list__title {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
}

.page-contact .beijing-list__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(233, 242, 251, .72);
}

.page-contact .beijing-grid__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(233, 242, 251, .55);
}

@media (min-width: 960px) {
  .page-contact .beijing-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: center;
  }
}

/* ============ 常见问题 ============ */
.page-contact .faq-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-contact .faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--line-mist);
  background: var(--paper);
  padding: 2px 22px;
  transition: border-color .2s var(--ease);
}

.page-contact .faq-item[open] {
  border-color: rgba(255, 106, 24, .45);
}

.page-contact .faq-item > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--graphite);
}

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

.page-contact .faq-item > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--pulse-orange);
  transition: transform .2s var(--ease);
}

.page-contact .faq-item[open] > summary::after {
  transform: rotate(45deg);
}

.page-contact .faq-item > summary:focus-visible {
  outline: 2px solid var(--signal-blue);
  outline-offset: 4px;
}

.page-contact .faq-item__body {
  padding: 0 0 20px;
  border-top: 1px dashed var(--line-mist);
  padding-top: 16px;
}

.page-contact .faq-item__body p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--slate);
}

/* ============ 页尾路径条 ============ */
.page-contact .contact-next {
  background-image: radial-gradient(78% 110% at 84% 100%, rgba(255, 106, 24, .16), transparent 62%);
}

.page-contact .contact-next .path-strip {
  display: grid;
  gap: 12px;
}

.page-contact .contact-next__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(233, 242, 251, .74);
}

.page-contact .contact-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ============ 进入视口动效 ============ */
.page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}

.page-contact [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.page-contact .coop-card:nth-child(2) { transition-delay: .05s; }
.page-contact .coop-card:nth-child(3) { transition-delay: .1s; }
.page-contact .coop-card:nth-child(4) { transition-delay: .15s; }
.page-contact .coop-card:nth-child(5) { transition-delay: .2s; }

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal],
  .page-contact .coop-card,
  .page-contact .step,
  .page-contact .channel-card,
  .page-contact .faq-item > summary::after {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .page-contact .coop-card__panel {
    animation: none;
  }
}