.page-contact {
  --ct-gap: clamp(16px, 2.4vw, 32px);
  --ct-line: rgba(0, 229, 255, 0.18);
  --ct-line-soft: rgba(0, 229, 255, 0.07);
  --ct-body: rgba(242, 237, 228, 0.78);
  padding-bottom: clamp(40px, 6vw, 88px);
  background-image:
    radial-gradient(circle at 86% 2%, rgba(0, 229, 255, 0.07), transparent 44%),
    radial-gradient(circle at 4% 36%, rgba(155, 93, 229, 0.07), transparent 42%);
  overflow-wrap: anywhere;
}

.page-contact .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

.page-contact .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

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

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
  padding-block: clamp(24px, 4.5vw, 56px) clamp(28px, 5vw, 64px);
}

.page-contact .ct-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 74px);
  line-height: 1.03;
  letter-spacing: 0.01em;
  color: var(--paper);
  margin: 0.18em 0 0.42em;
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.28);
}

.page-contact .ct-hero__sum {
  max-width: 40ch;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: clamp(15px, 1.15vw, 16.5px);
  line-height: 1.9;
  color: var(--ct-body);
}

.page-contact .ct-quick {
  display: grid;
  gap: 10px;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  padding: 0;
}

.page-contact .ct-quick__item {
  border: 1px solid var(--line-steel);
  border-left: 2px solid var(--cyan);
  background: rgba(27, 32, 40, 0.72);
  padding: 10px 12px;
}

.page-contact .ct-quick dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--graphite);
  text-transform: uppercase;
}

.page-contact .ct-quick dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}

.page-contact .ct-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .ct-hero__visual {
  margin: 0;
  position: relative;
  padding: 10px;
  border: 1px solid var(--ct-line);
  background: linear-gradient(170deg, rgba(0, 229, 255, 0.07), rgba(255, 107, 26, 0.06));
  box-shadow: var(--shadow-paper);
}

.page-contact .ct-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(0, 229, 255, 0.12);
}

.page-contact .ct-hero__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--graphite);
  text-align: right;
}

/* ---------- 章节骨架 ---------- */
.page-contact .ct-sec {
  padding-block: clamp(34px, 5vw, 68px);
}

.page-contact .sec-head {
  display: grid;
  gap: 10px;
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--line-steel);
  padding-top: 18px;
}

.page-contact .sec-title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(23px, 3.1vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
}

.page-contact .sec-sub {
  max-width: 46ch;
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ct-body);
}

/* ---------- 001 渠道板 ---------- */
.page-contact .ct-board {
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .ct-board__main {
  display: grid;
  gap: 14px;
}

.page-contact .ct-card {
  position: relative;
  padding: clamp(16px, 2vw, 22px);
  border: 1px solid var(--line-steel);
  background: linear-gradient(160deg, rgba(27, 32, 40, 0.96), rgba(17, 21, 27, 0.96));
  box-shadow: var(--shadow-paper);
  transform: rotate(var(--tilt, 0deg));
  transition: transform 240ms ease, border-color 240ms ease, box-shadow 240ms ease;
}

.page-contact .ct-card:hover,
.page-contact .ct-card:focus-within {
  transform: rotate(0deg) translateY(-4px);
  border-color: var(--line-cyan-strong);
  box-shadow: var(--glow-cyan);
}

.page-contact .ct-card__tag {
  display: inline-block;
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 2px 8px;
}

.page-contact .ct-card__title {
  margin: 0 0 8px;
  font-size: clamp(18px, 1.7vw, 21px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .ct-card__sum {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ct-body);
}

/* ---------- 折叠条目 ---------- */
.page-contact .ct-fold {
  margin-top: 14px;
  border-top: 1px solid var(--line-steel);
}

.page-contact .ct-fold > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0 8px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  transition: color 160ms ease;
}

.page-contact .ct-fold > summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-fold > summary::after {
  content: "+";
  margin-left: auto;
  font-size: 16px;
  line-height: 1;
  color: var(--lava);
}

.page-contact .ct-fold[open] > summary::after {
  content: "−";
}

.page-contact .ct-fold > summary:hover,
.page-contact .ct-fold > summary:focus-visible {
  color: var(--cyan-soft);
  outline: none;
}

.page-contact .ct-fold__body {
  padding: 2px 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ct-body);
}

.page-contact .ct-fold__body p {
  margin: 0;
}

.page-contact .ct-fold__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 侧栏面板 ---------- */
.page-contact .ct-board__aside {
  display: grid;
  gap: 14px;
}

.page-contact .ct-panel {
  border: 1px solid var(--ct-line);
  background: rgba(17, 21, 27, 0.86);
  padding: clamp(16px, 2vw, 22px);
}

.page-contact .ct-panel__title {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--moss);
  filter: brightness(1.65);
}

.page-contact .ct-clock {
  display: grid;
  gap: 6px;
}

.page-contact .ct-clock__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px dashed var(--line-steel);
  padding-bottom: 4px;
}

.page-contact .ct-clock__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--graphite);
}

.page-contact .ct-clock__row strong {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5.4vw, 36px);
  line-height: 1.1;
  letter-spacing: 0.03em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-clock__bar {
  height: 3px;
  margin: 12px 0 14px;
  background: linear-gradient(90deg, var(--cyan), var(--lava));
}

.page-contact .ct-panel__note {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ct-body);
}

.page-contact .ct-panel__note:last-child {
  margin-bottom: 0;
}

.page-contact .ct-shortcuts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .ct-shortcuts a {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line-steel);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  transition: border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.page-contact .ct-shortcuts a:hover,
.page-contact .ct-shortcuts a:focus-visible {
  border-color: var(--line-cyan-strong);
  color: var(--cyan-soft);
  transform: translateX(3px);
}

/* ---------- 002 会员中心 ---------- */
.page-contact .ct-member {
  display: grid;
  gap: var(--ct-gap);
  border: 1px solid var(--ct-line);
  background:
    linear-gradient(120deg, rgba(255, 107, 26, 0.09), transparent 58%),
    rgba(27, 32, 40, 0.7);
  padding: clamp(18px, 2.6vw, 32px);
}

.page-contact .ct-member__body p {
  margin: 0 0 14px;
  font-size: clamp(15px, 1.15vw, 16.5px);
  line-height: 1.9;
  color: var(--ct-body);
  max-width: 48ch;
}

.page-contact .ct-member__body p:last-child {
  margin-bottom: 0;
}

.page-contact .ct-member__aside {
  display: grid;
  justify-items: start;
  align-content: center;
  gap: 10px;
}

.page-contact .ct-member__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--lava);
  color: #14181D;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-contact .ct-member__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

/* ---------- 003 商务合作 ---------- */
.page-contact .ct-biz {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  align-items: start;
}

.page-contact .ct-biz__sub {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

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

.page-contact .ct-dirs li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  border: 1px solid var(--line-steel);
  border-left: 2px solid var(--violet);
  background: rgba(17, 21, 27, 0.7);
  padding: 12px 14px;
}

.page-contact .ct-dirs__num {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--violet);
  line-height: 1.2;
}

.page-contact .ct-dirs h4 {
  margin: 0 0 4px;
  font-size: 16px;
  color: var(--paper);
}

.page-contact .ct-dirs p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ct-body);
}

.page-contact .ct-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line-steel);
  background: rgba(27, 32, 40, 0.7);
  box-shadow: var(--shadow-paper);
}

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

.page-contact .ct-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.page-contact .ct-kit {
  margin-top: clamp(20px, 3vw, 34px);
  border: 1px solid var(--ct-line);
  border-top: 2px solid var(--lava);
  background: rgba(17, 21, 27, 0.78);
  padding: clamp(16px, 2.4vw, 26px);
}

.page-contact .ct-kit__title {
  margin: 0 0 14px;
  font-size: 16px;
  color: var(--paper);
}

.page-contact .ct-kit__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .ct-kit__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ct-body);
  border-bottom: 1px dashed var(--line-steel);
  padding-bottom: 8px;
}

.page-contact .ct-kit__list span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--clay);
  filter: brightness(1.7);
}

.page-contact .ct-kit__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ct-body);
}

/* ---------- 004 纠错 ---------- */
.page-contact .ct-fix {
  display: grid;
  gap: 14px;
}

.page-contact .ct-fix__col {
  border: 1px solid var(--line-steel);
  background: rgba(27, 32, 40, 0.72);
  padding: clamp(14px, 1.8vw, 20px);
}

.page-contact .ct-fix__col--alt {
  border-left: 2px solid var(--cyan);
}

.page-contact .ct-fix__col h3 {
  margin: 0 0 12px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .ct-fix__col ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.page-contact .ct-fix__col li {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ct-body);
}

.page-contact .ct-fix__ask {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--lava);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper);
}

/* ---------- 005 纸面站点信息 ---------- */
.page-contact .ct-sheet {
  margin-top: clamp(30px, 5vw, 64px);
  padding-block: clamp(28px, 4vw, 52px);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    116deg,
    rgba(20, 24, 29, 0.045) 0 2px,
    transparent 2px 10px
  );
  color: #14181D;
}

.page-contact .sec-head--paper {
  border-top-color: var(--line-paper);
}

.page-contact .sec-head--paper .sec-title {
  color: #14181D;
}

.page-contact .sec-head--paper .sec-num {
  color: var(--clay-ink);
}

.page-contact .ct-info {
  display: grid;
  gap: 1px;
  margin: 0;
  background: var(--line-paper);
  border: 1px solid var(--line-paper);
}

.page-contact .ct-info__item {
  background: rgba(242, 237, 228, 0.5);
  padding: 12px 14px;
}

.page-contact .ct-info dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--clay-ink);
  margin-bottom: 4px;
}

.page-contact .ct-info dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
  color: #14181D;
}

.page-contact .ct-info dd a {
  color: var(--teal-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ct-info__note {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(20, 24, 29, 0.78);
}

.page-contact .ct-info__note a {
  color: var(--teal-ink);
}

/* ---------- 006 常见问题 ---------- */
.page-contact .ct-faq {
  display: grid;
  gap: 12px;
}

.page-contact .ct-fold--lg {
  margin-top: 0;
  border: 1px solid var(--line-steel);
  background: rgba(27, 32, 40, 0.6);
  padding: 0 clamp(14px, 1.8vw, 20px);
  transition: border-color 180ms ease;
}

.page-contact .ct-fold--lg:hover,
.page-contact .ct-fold--lg[open] {
  border-color: var(--line-cyan-strong);
}

.page-contact .ct-fold--lg > summary {
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--paper);
  padding: 14px 0;
}

.page-contact .ct-fold--lg > summary:hover,
.page-contact .ct-fold--lg > summary:focus-visible {
  color: var(--cyan-soft);
}

/* ---------- 底部渠道带 ---------- */
.page-contact .ct-lane {
  margin-top: clamp(34px, 5vw, 70px);
  padding-block: clamp(28px, 4vw, 48px);
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.05), rgba(255, 107, 26, 0.05));
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-lane__title {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ct-lane__list {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: none;
}

.page-contact .ct-lane__step {
  position: relative;
  padding: 14px 16px 14px 20px;
  border: 1px solid var(--line-steel);
  background: rgba(7, 9, 14, 0.6);
}

.page-contact .ct-lane__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--lava));
}

.page-contact .ct-lane__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--lava);
  margin-bottom: 6px;
}

.page-contact .ct-lane__step h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--paper);
}

.page-contact .ct-lane__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ct-body);
}

.page-contact .ct-lane__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .ct-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

  .page-contact .ct-member {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-contact .ct-member__aside {
    justify-items: end;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }

  .page-contact .ct-hero__visual {
    justify-self: end;
    max-width: 520px;
  }

  .page-contact .sec-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }

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

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

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

@media (min-width: 1020px) {
  .page-contact .ct-board {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: start;
  }

  .page-contact .ct-board__aside {
    position: sticky;
    top: clamp(72px, 9vh, 104px);
  }

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

  .page-contact .ct-lane__step {
    border-left: none;
    background: rgba(7, 9, 14, 0.5);
    margin-left: 0;
  }

  .page-contact .ct-lane__step:first-child {
    border-left: 1px solid var(--line-steel);
  }

  .page-contact .ct-lane__step::before {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 3px;
    background: linear-gradient(90deg, var(--cyan), var(--lava));
  }
}

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

  .page-contact .ct-card:hover,
  .page-contact .ct-card:focus-within,
  .page-contact .ct-shortcuts a:hover,
  .page-contact .ct-shortcuts a:focus-visible {
    transform: none;
  }
}