.page-contact {
  background: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 68px);
  background:
    radial-gradient(95% 130% at 88% -25%, rgba(79, 227, 208, .16), transparent 62%),
    radial-gradient(78% 110% at 4% 0%, rgba(14, 59, 51, .92), transparent 72%),
    linear-gradient(180deg, var(--night) 0%, var(--indigo) 100%);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 16%, rgba(242, 196, 107, .5) 55%, transparent);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(46vw, 420px);
  height: 100%;
  background:
    repeating-linear-gradient(180deg, rgba(242, 196, 107, .28) 0 1px, transparent 1px 26px);
  -webkit-mask-image: linear-gradient(120deg, transparent 10%, #000 72%);
  mask-image: linear-gradient(120deg, transparent 10%, #000 72%);
  opacity: .55;
  z-index: -1;
  pointer-events: none;
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: .35em;
  list-style: none;
  margin: 0 0 clamp(18px, 3vw, 28px);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-contact .breadcrumbs li {
  display: flex;
  align-items: center;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: .35em;
  color: rgba(242, 196, 107, .6);
}

.page-contact .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast);
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-contact .ct-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 64px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: .28em 0 .42em;
  max-width: 15ch;
}

.page-contact .ct-hero__lead {
  max-width: 40em;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 34px);
}

/* ---------- 档案板 ---------- */
.page-contact .ct-board__lead {
  max-width: 42em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--mist);
  line-height: 1.85;
}

.page-contact .ct-board__fig {
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-contact .ct-board__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
  object-position: center 42%;
  filter: saturate(.9) brightness(.86);
}

.page-contact .ct-board__wrap {
  position: relative;
  background:
    linear-gradient(158deg, rgba(14, 59, 51, .97) 0%, rgba(11, 34, 51, .98) 58%, rgba(6, 19, 33, .98) 100%);
  border: 1px solid rgba(122, 91, 30, .55);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-contact .ct-board__tabs {
  display: flex;
  gap: 8px;
  padding: 14px clamp(16px, 4vw, 26px) 0;
  border-bottom: 1px solid rgba(122, 91, 30, .4);
}

.page-contact .ct-board__tabs .tabs__btn {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.2;
  padding: 10px 16px;
  color: var(--mist);
  background: transparent;
  border: 1px solid rgba(122, 91, 30, .45);
  border-bottom: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-contact .ct-board__tabs .tabs__btn.is-active,
.page-contact .ct-board__tabs .tabs__btn[aria-selected="true"] {
  color: var(--gold);
  border-color: rgba(242, 196, 107, .72);
  background: rgba(242, 196, 107, .09);
}

.page-contact .ct-board__grid {
  display: block;
}

.page-contact .ct-panel {
  padding: clamp(20px, 4vw, 34px);
}

.page-contact .ct-panel__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
  margin: 0 0 clamp(16px, 2.5vw, 22px);
  padding-left: 14px;
  border-left: 3px solid var(--gold);
}

.page-contact .ct-panel__note {
  margin: clamp(16px, 2.5vw, 22px) 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(122, 91, 30, .6);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* 步骤 */
.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
}

.page-contact .ct-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}

.page-contact .ct-step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
  border: 1px solid rgba(242, 196, 107, .5);
  padding: 3px 7px;
  line-height: 1.2;
  display: inline-block;
  margin-top: 2px;
  transition: background var(--t-fast), color var(--t-fast);
}

.page-contact .ct-step:hover .ct-step__num {
  background: var(--gold);
  color: var(--night);
}

.page-contact .ct-step__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 5px;
  line-height: 1.5;
}

.page-contact .ct-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* 权益记录栏 */
.page-contact .ct-panel--rights > p {
  margin: 0 0 clamp(16px, 2.5vw, 22px);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-contact .ct-rights__list li {
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(122, 91, 30, .3);
}

.page-contact .ct-rights__list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-contact .ct-rights__list .mono-tag {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
  border: 1px solid rgba(242, 196, 107, .45);
  padding: 1px 6px;
  vertical-align: 1px;
}

.page-contact .ct-rights__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-contact .ct-link {
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, .45);
  padding-bottom: 2px;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-contact .ct-link:hover,
.page-contact .ct-link:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels__lead {
  max-width: 42em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--mist);
  line-height: 1.85;
}

.page-contact .ct-channels__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(18px, 3vw, 26px);
  background: linear-gradient(170deg, rgba(11, 34, 51, .96), rgba(6, 19, 33, .96));
  transition: transform var(--t-mid), border-color var(--t-mid);
}

.page-contact .ct-channel:hover {
  transform: translateX(4px);
  border-color: rgba(242, 196, 107, .7);
}

.page-contact .ct-channel .mono-tag--solid {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--night);
  background: var(--gold);
  padding: 3px 9px;
}

.page-contact .ct-channel__val {
  margin: 0;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .ct-channel__val--mono {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--gold);
}

.page-contact .ct-channel__use {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .copy-btn {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding: 7px 14px;
  color: var(--gold);
  background: transparent;
  border: 1px solid rgba(242, 196, 107, .5);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transition: background var(--t-fast), color var(--t-fast);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: var(--gold);
  color: var(--night);
}

.page-contact .ct-channels__hours {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  border-left: 3px solid var(--cyan);
  background: rgba(11, 34, 51, .6);
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-coop__lead {
  max-width: 40em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--mist);
  line-height: 1.85;
}

.page-contact .ct-coop__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(122, 91, 30, .35);
  border: 1px solid rgba(122, 91, 30, .35);
}

.page-contact .ct-coop__item {
  background: linear-gradient(180deg, rgba(11, 34, 51, .97), rgba(6, 19, 33, .97));
  transition: background var(--t-mid);
}

.page-contact .ct-coop__item[data-open] {
  background: linear-gradient(180deg, rgba(14, 59, 51, .97), rgba(11, 34, 51, .97));
}

.page-contact .ct-coop__trigger {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 14px;
  width: 100%;
  padding: clamp(18px, 3vw, 26px);
  text-align: left;
  background: transparent;
  border: none;
  border-left: 2px solid transparent;
  cursor: pointer;
  color: inherit;
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-contact .ct-coop__trigger:hover {
  background: rgba(79, 227, 208, .05);
}

.page-contact .ct-coop__item[data-open] .ct-coop__trigger {
  border-left-color: var(--cyan);
}

.page-contact .ct-coop__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
  grid-row: span 2;
}

.page-contact .ct-coop__name {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.3;
}

.page-contact .ct-coop__hint {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .ct-coop__item .acc__panel {
  padding: 0 clamp(18px, 3vw, 26px) clamp(18px, 3vw, 26px) calc(clamp(18px, 3vw, 26px) + 34px);
}

.page-contact .ct-coop__item .acc__panel p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-coop__fit {
  font-size: 12.5px !important;
  color: rgba(159, 179, 192, .85) !important;
  padding-top: 10px;
  border-top: 1px dashed rgba(122, 91, 30, .6);
}

.page-contact .ct-coop__fig {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-contact .ct-coop__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  object-position: center 55%;
  filter: saturate(.85) brightness(.8);
}

/* ---------- 准备清单 ---------- */
.page-contact .ct-prepare__layout {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-contact .ct-prepare__intro p {
  margin: 0 0 12px;
  max-width: 34em;
  color: var(--mist);
  line-height: 1.85;
}

.page-contact .ct-prepare__tip {
  font-size: 12.5px !important;
  color: rgba(159, 179, 192, .75) !important;
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

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

.page-contact .ct-check {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(11, 34, 51, .72);
  border: 1px solid rgba(122, 91, 30, .42);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-contact .ct-check:hover {
  border-color: rgba(242, 196, 107, .65);
}

.page-contact .ct-check input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}

.page-contact .ct-check__box {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1.5px solid rgba(242, 196, 107, .6);
  display: grid;
  place-items: center;
  transition: background var(--t-fast), border-color var(--t-fast);
}

.page-contact .ct-check input:checked + .ct-check__box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .ct-check input:checked + .ct-check__box::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--night);
  border-bottom: 2px solid var(--night);
  transform: rotate(-45deg) translateY(-1px);
}

.page-contact .ct-check input:focus-visible + .ct-check__box {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .ct-check__text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-check__text strong {
  display: block;
  font-size: 14px;
  color: var(--paper);
  margin-bottom: 2px;
}

/* ---------- 收束 ---------- */
.page-contact .ct-next__panel {
  padding: clamp(22px, 4vw, 38px);
  background:
    radial-gradient(120% 130% at 92% 0%, rgba(79, 227, 208, .12), transparent 62%),
    linear-gradient(160deg, rgba(14, 59, 51, .95), rgba(6, 19, 33, .95));
}

.page-contact .ct-next__title {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-contact .ct-next__panel p {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .ct-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 移动端标签切换（渐进增强） ---------- */
@media (max-width: 899px) {
  .has-js .page-contact .ct-panel {
    display: none;
  }

  .has-js .page-contact .ct-panel.is-active,
  .has-js .page-contact .ct-panel[aria-hidden="false"] {
    display: block;
  }
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .ct-checklist {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .ct-board__tabs {
    display: none;
  }

  .page-contact .ct-board__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .page-contact .ct-panel {
    display: block !important;
  }

  .page-contact .ct-panel + .ct-panel {
    border-left: 1px solid rgba(242, 196, 107, .38);
    background: linear-gradient(180deg, rgba(6, 19, 33, .35), rgba(6, 19, 33, 0));
  }

  .page-contact .ct-coop__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .ct-prepare__layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel:hover {
    transform: none;
  }

  .page-contact .ct-step:hover .ct-step__num {
    background: transparent;
    color: var(--gold);
  }
}