.page-contact {
  --ct-cut: 18px;
  --ct-sand: #E7E2D6;
  background: var(--paper);
  color: var(--graphite);
  overflow-x: clip;
}

.page-contact [id] {
  scroll-margin-top: 104px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(56, 242, 200, .14), transparent 62%),
    radial-gradient(90% 80% at 4% 100%, rgba(122, 31, 61, .34), transparent 66%),
    var(--ink);
  color: var(--paper);
  padding: clamp(22px, 4vw, 44px) 0 clamp(52px, 7vw, 96px);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(115deg, rgba(201, 207, 201, .06) 0 1px, transparent 1px 9px);
}

.page-contact .ct-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--paper-70);
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-contact .crumbs__link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}

.page-contact .crumbs__link:hover {
  border-bottom-color: var(--neon);
}

.page-contact .crumbs__sep {
  color: var(--gray);
}

.page-contact .crumbs__current {
  color: var(--paper-70);
}

.page-contact .ct-hero__inner {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  align-items: end;
}

.page-contact .chapter-kicker {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-contact .ct-hero h1 {
  margin: 0 0 20px;
  max-width: 18ch;
  font-size: clamp(30px, 5.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ct-hero__lede {
  margin: 0 0 28px;
  max-width: 56ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--paper-70);
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .ct-hero__ticks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(56, 242, 200, .22);
  border: 1px solid rgba(56, 242, 200, .22);
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, var(--ct-cut) 100%, 0 calc(100% - var(--ct-cut)));
}

.page-contact .ct-tick {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-contact .ct-tick__num {
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-contact .ct-tick__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--paper-70);
}

/* ---------- 章节头配色 ---------- */
.page-contact .chapter-no {
  display: block;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .22em;
  margin-bottom: 10px;
  color: var(--wine);
}

.page-contact .chapter-title {
  color: var(--ink);
}

.page-contact .chapter-lede {
  color: var(--gray);
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-directions {
  padding: clamp(54px, 8vw, 112px) 0;
  background: var(--paper);
}

.page-contact .ct-cards {
  display: grid;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .ct-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 18px 20px;
  background: linear-gradient(165deg, var(--ink-2) 0%, var(--ink) 100%);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - var(--ct-cut)) 0, 100% var(--ct-cut), 100% 100%, var(--ct-cut) 100%, 0 calc(100% - var(--ct-cut)));
  transition: transform .35s var(--ease), filter .35s var(--ease);
}

.page-contact .ct-card:hover {
  transform: translateY(-4px);
  filter: brightness(1.09);
}

.page-contact .ct-card__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--neon);
}

.page-contact .ct-card__title {
  margin: 0;
  font-size: 19px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .ct-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-70);
}

.page-contact .ct-card__fit {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding-top: 0;
  border-top: 1px solid transparent;
  transition: max-height .4s var(--ease), opacity .3s var(--ease), padding-top .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .ct-card:hover .ct-card__fit {
  max-height: 200px;
  opacity: 1;
  padding-top: 12px;
  border-top-color: rgba(56, 242, 200, .32);
}

.page-contact .ct-card__fitkey {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .ct-card__fit p {
  margin: 0;
  font-size: 13px;
  line-height: 1.66;
  color: var(--neon-soft);
}

.page-contact .ct-shot {
  position: relative;
  margin: clamp(24px, 4vw, 44px) 0 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ink-2);
}

.page-contact .ct-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}

.page-contact .ct-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(92deg, rgba(11, 46, 41, .5), transparent 58%);
}

/* ---------- 合作流程 ---------- */
.page-contact .ct-flow {
  position: relative;
  padding: clamp(56px, 8vw, 112px) 0;
  background: linear-gradient(178deg, var(--indigo) 0%, #221E52 100%);
  color: var(--paper);
  clip-path: polygon(0 0, 100% 1.6vw, 100% 100%, 0 100%);
}

.page-contact .ct-flow .chapter-no {
  color: var(--gold);
}

.page-contact .ct-flow .chapter-kicker {
  color: var(--neon);
}

.page-contact .ct-flow .chapter-title {
  color: var(--paper);
}

.page-contact .ct-flow .chapter-lede {
  color: rgba(244, 241, 233, .76);
}

.page-contact .ct-flow__body {
  margin-top: clamp(28px, 4vw, 50px);
}

.page-contact .ct-flow__line {
  display: block;
  width: 100%;
  height: clamp(46px, 6vw, 92px);
  margin-bottom: -14px;
  color: rgba(168, 255, 240, .5);
}

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

.page-contact .ct-steps > li {
  min-width: 0;
}

.page-contact .ct-step {
  height: 100%;
  padding: 18px 16px;
  background: rgba(11, 46, 41, .58);
  border: 1px solid rgba(56, 242, 200, .22);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .ct-step[open] {
  background: rgba(11, 46, 41, .88);
  border-color: var(--neon);
}

.page-contact .ct-step__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  user-select: none;
}

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

.page-contact .ct-step__sum::marker {
  content: "";
}

.page-contact .ct-step__no {
  font-family: var(--mono);
  font-size: 22px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-contact .ct-step__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .ct-step__when {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--neon);
}

.page-contact .ct-step__body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(56, 242, 200, .3);
}

.page-contact .ct-step__body p {
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--paper-70);
}

.page-contact .ct-step__body .ct-step__need {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--neon-soft);
}

/* ---------- 联系方式面板 ---------- */
.page-contact .ct-channels {
  padding: clamp(56px, 8vw, 112px) 0;
  background: var(--paper);
}

.page-contact .ct-panel {
  position: relative;
  margin-top: clamp(26px, 4vw, 46px);
  padding: clamp(26px, 4vw, 56px);
  color: var(--paper);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(56, 242, 200, .13), transparent 60%),
    var(--ink);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-contact .ct-panel__corners {
  position: absolute;
  inset: 18px;
  pointer-events: none;
}

.page-contact .ct-panel__corners i {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 1px solid rgba(56, 242, 200, .6);
}

.page-contact .ct-panel__corners i:nth-child(1) {
  top: 0;
  left: 0;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .ct-panel__corners i:nth-child(2) {
  top: 0;
  right: 0;
  border-left: 0;
  border-bottom: 0;
}

.page-contact .ct-panel__corners i:nth-child(3) {
  bottom: 0;
  left: 0;
  border-right: 0;
  border-top: 0;
}

.page-contact .ct-panel__corners i:nth-child(4) {
  bottom: 0;
  right: 0;
  border-left: 0;
  border-top: 0;
}

.page-contact .ct-panel__rows {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 3vw, 34px);
}

.page-contact .ct-channel {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-contact .ct-channel__key {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--neon);
}

.page-contact .ct-channel__val {
  min-width: 0;
  font-family: var(--mono);
  font-size: clamp(17px, 3.2vw, 32px);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
  border-bottom: 1px solid rgba(244, 241, 233, .3);
  padding-bottom: 4px;
  word-break: break-word;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .ct-channel__val:hover {
  color: var(--neon-soft);
  border-bottom-color: var(--orange);
}

.page-contact .ct-channel__val--addr {
  font-family: var(--sans);
  font-size: clamp(15px, 1.8vw, 20px);
  line-height: 1.66;
  border-bottom-color: transparent;
  color: var(--paper);
}

.page-contact .ct-channel__val--addr:hover {
  color: var(--neon-soft);
  border-bottom-color: transparent;
}

.page-contact .ct-copy {
  justify-self: start;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding: 8px 16px;
  background: transparent;
  color: var(--neon);
  border: 1px solid rgba(56, 242, 200, .55);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .ct-copy:hover {
  background: rgba(56, 242, 200, .16);
}

.page-contact .ct-copy[data-copied] {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink);
}

.page-contact .ct-panel__foot {
  position: relative;
  z-index: 1;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(56, 242, 200, .22);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--paper-70);
}

.page-contact .ct-band {
  position: relative;
  z-index: 1;
  margin: clamp(22px, 3vw, 34px) 0 0;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ink-2);
}

.page-contact .ct-band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.95) contrast(1.04);
}

.page-contact .ct-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 46, 41, .36), rgba(11, 46, 41, .05));
}

/* ---------- 反馈与问题处理 ---------- */
.page-contact .ct-support {
  padding: clamp(56px, 8vw, 112px) 0;
  background: var(--ct-sand);
}

.page-contact .ct-support .chapter-no {
  color: var(--indigo);
}

.page-contact .ct-support__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 46px);
  background: rgba(27, 31, 30, .14);
  border-top: 1px solid rgba(27, 31, 30, .14);
  border-bottom: 1px solid rgba(27, 31, 30, .14);
}

.page-contact .ct-sup {
  padding: 20px 18px;
  background: var(--ct-sand);
}

.page-contact .ct-sup__title {
  margin: 0 0 8px;
  font-size: 15.5px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .ct-sup__body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 合作前先看这些 ---------- */
.page-contact .ct-links {
  padding: clamp(56px, 8vw, 112px) 0;
  background: var(--wine);
  color: var(--paper);
}

.page-contact .ct-links .chapter-no {
  color: var(--gold);
}

.page-contact .ct-links .chapter-kicker {
  color: var(--neon-soft);
}

.page-contact .ct-links .chapter-title {
  color: var(--paper);
}

.page-contact .ct-links .chapter-lede {
  color: rgba(244, 241, 233, .78);
}

.page-contact .ct-linklist {
  list-style: none;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(244, 241, 233, .24);
  border: 1px solid rgba(244, 241, 233, .24);
}

.page-contact .ct-linklist li {
  min-width: 0;
  background: var(--wine);
}

.page-contact .ct-linklist a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
  text-decoration: none;
  transition: background .25s var(--ease);
}

.page-contact .ct-linklist a:hover {
  background: rgba(11, 46, 41, .42);
}

.page-contact .ct-linklist a > span {
  font-size: 13px;
  font-weight: 400;
  line-height: 1.68;
  color: rgba(244, 241, 233, .74);
}

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

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

@media (min-width: 760px) {
  .page-contact .ct-shot {
    aspect-ratio: 3 / 1;
  }

  .page-contact .ct-band {
    aspect-ratio: 5 / 2;
  }

  .page-contact .ct-channel {
    grid-template-columns: 112px minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
  }

  .page-contact .ct-copy {
    justify-self: end;
  }

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

@media (min-width: 900px) {
  .page-contact .ct-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 1040px) {
  .page-contact .ct-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (hover: none) {
  .page-contact .ct-card__fit {
    max-height: none;
    opacity: 1;
    padding-top: 12px;
    border-top-color: rgba(56, 242, 200, .32);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-copy,
  .page-contact .ct-channel__val,
  .page-contact .ct-linklist a {
    transition: none;
  }

  .page-contact .ct-card:hover {
    transform: none;
  }
}