.page-contact {
  --ct-paper-line: rgba(33, 26, 20, 0.22);
  --ct-paper-faint: rgba(33, 26, 20, 0.55);
  display: block;
  background: var(--night);
  color: var(--paper);
  padding-bottom: clamp(2.4rem, 6vw, 4rem);
  overflow-x: clip;
}

.page-contact .ct-hero {
  padding-top: clamp(1rem, 3vw, 1.8rem);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(1rem, 2.6vw, 1.8rem);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.5vw, 2.6rem);
  align-items: start;
}

.page-contact .ct-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0.55rem 0 1rem;
  color: var(--paper);
  max-width: 15em;
}

.page-contact .ct-hero__intro {
  margin: 0 0 1.5rem;
  font-size: clamp(1rem, 2.3vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 40em;
}

.page-contact .ct-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  margin: 0 0 1.7rem;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.page-contact .ct-hero__facts b {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.02em;
}

/* ---------- 奶油纸信笺 ---------- */
.page-contact .ct-mailcard {
  position: relative;
  padding: clamp(1.1rem, 3vw, 1.7rem);
  border: 1px solid var(--ct-paper-line);
  box-shadow: 10px 12px 0 rgba(0, 0, 0, 0.3);
  transform: rotate(-0.5deg);
  margin-bottom: 0.9rem;
}

.page-contact .ct-stamp {
  position: absolute;
  top: -14px;
  right: clamp(0.8rem, 3vw, 1.6rem);
  width: 62px;
  height: 62px;
  display: grid;
  place-content: center;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.25;
  letter-spacing: 0.06em;
  color: var(--red);
  border: 2px solid var(--red);
  border-radius: 50%;
  background: var(--cream);
  transform: rotate(9deg);
  opacity: 0.85;
}

.page-contact .ct-mailcard__eyebrow {
  color: var(--ct-paper-faint);
  margin-bottom: 0.5rem;
}

.page-contact .ct-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.7rem;
  padding: 0.62rem 0;
  border-bottom: 1px dashed var(--ct-paper-line);
}

.page-contact .ct-row:last-of-type {
  border-bottom: 0;
}

.page-contact .ct-row__label {
  flex: 0 0 auto;
  min-width: 4.8em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ct-paper-faint);
}

.page-contact .ct-row__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--ink-on-paper);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .ct-copy {
  flex: 0 0 auto;
  font-size: 0.74rem;
  padding: 0.22rem 0.6rem;
}

.page-contact .panel--paper .ct-copy {
  border: 1px solid var(--ct-paper-line);
  background: transparent;
  color: var(--ct-paper-faint);
}

/* ---------- 右窄栏检索卡 ---------- */
.page-contact .ct-hero__side {
  display: grid;
  gap: 0.9rem;
}

.page-contact .ct-searchcard {
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--blue);
  background: linear-gradient(158deg, rgba(47, 111, 191, 0.18), rgba(8, 24, 38, 0.72) 62%);
  padding: clamp(1rem, 2.6vw, 1.4rem);
}

.page-contact .ct-searchcard__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3vw, 1.3rem);
  line-height: 1.35;
  margin: 0 0 0.45rem;
  color: var(--paper);
}

.page-contact .ct-searchcard__note {
  margin: 0 0 0.85rem;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--ink-faint);
}

.page-contact .ct-searchcard__links {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
}

.page-contact .ct-searchcard__links a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.55rem 0.15rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper);
  font-size: 0.88rem;
  line-height: 1.6;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-contact .ct-searchcard__links a:hover,
.page-contact .ct-searchcard__links a:focus-visible {
  color: var(--cyan);
  padding-left: 0.4rem;
}

.page-contact .ct-searchcard__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-contact .ct-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
}

.page-contact .ct-hero__media {
  margin: 0;
  border: 1px solid var(--line);
}

.page-contact .ct-hero__media img {
  filter: saturate(0.92) brightness(0.94);
}

/* ---------- 通用区块 ---------- */
.page-contact .ct-sec {
  padding-top: clamp(2.6rem, 7vw, 4.4rem);
}

.page-contact .ct-sec__head {
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
  max-width: 44em;
}

.page-contact .ct-sec h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4.4vw, 2.35rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0;
  color: var(--paper);
}

.page-contact .ct-sec__lead {
  margin: 0.8rem 0 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 合作类型标签 ---------- */
.page-contact .ct-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.2rem;
}

.page-contact .ct-tab {
  position: relative;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.88rem;
  line-height: 1;
  padding: 0.68rem 1rem 0.68rem 1.15rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-contact .ct-tab::before {
  content: "";
  position: absolute;
  left: 0.42rem;
  top: 50%;
  width: 4px;
  height: 1.1em;
  transform: translateY(-50%);
  background: currentColor;
  opacity: 0.55;
}

.page-contact .ct-tab--blue::before { background: var(--blue); opacity: 1; }
.page-contact .ct-tab--cyan::before { background: var(--cyan); opacity: 1; }
.page-contact .ct-tab--amber::before { background: var(--amber); opacity: 1; }
.page-contact .ct-tab--green::before { background: var(--green); opacity: 1; }

.page-contact .ct-tab[aria-selected="true"] {
  color: var(--paper);
  border-color: var(--line-strong);
  background: rgba(248, 243, 231, 0.07);
}

.page-contact .ct-tab:hover {
  color: var(--paper);
}

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

.page-contact .ct-type {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  padding-top: 0.2rem;
}

.page-contact .ct-type__main h3 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.2vw, 1.5rem);
  margin: 0 0 0.55rem;
  color: var(--paper);
}

.page-contact .ct-type__main p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 40em;
}

.page-contact .ct-type__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .ct-type__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.15rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-contact .ct-type__k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}

.page-contact .ct-type__side {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-content: start;
}

/* ---------- 联系渠道 ---------- */
.page-contact .ct-channels__main h2 {
  margin-top: 0.35rem;
}

.page-contact .ct-coord {
  margin-top: 1.3rem;
  padding: clamp(1rem, 3vw, 1.6rem);
  border: 1px solid var(--ct-paper-line);
  box-shadow: 8px 10px 0 rgba(0, 0, 0, 0.26);
}

.page-contact .ct-coord__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.4rem;
  padding-bottom: 0.7rem;
  margin-bottom: 0.3rem;
  border-bottom: 2px solid var(--ct-paper-line);
}

.page-contact .ct-coord__tag {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-on-paper);
}

.page-contact .ct-coord__code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ct-paper-faint);
}

.page-contact .ct-coord__note {
  margin: 0.85rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--ct-paper-line);
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--ct-paper-faint);
}

.page-contact .ct-reply {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .ct-reply li {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 0.9rem;
  border-left: 2px solid var(--deep);
}

.page-contact .ct-reply__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 0.15rem;
}

.page-contact .ct-channels__side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-contact .ct-channels__media {
  margin: 0;
  border: 1px solid var(--line-strong);
}

.page-contact .ct-legend {
  display: grid;
  gap: 0.4rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: rgba(248, 243, 231, 0.04);
}

.page-contact .ct-legend .legend {
  margin: 0;
  font-size: 0.82rem;
}

/* ---------- 四步流程 ---------- */
.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
  counter-reset: none;
}

.page-contact .ct-step {
  position: relative;
  padding: 1.1rem 1.1rem 1.25rem;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: rgba(15, 42, 68, 0.55);
}

.page-contact .ct-step:nth-child(2) { border-top-color: var(--blue); }
.page-contact .ct-step:nth-child(3) { border-top-color: var(--amber); }
.page-contact .ct-step:nth-child(4) { border-top-color: var(--green); }

.page-contact .ct-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--paper);
  opacity: 0.5;
  margin-bottom: 0.35rem;
}

.page-contact .ct-step__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 0.5rem;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-contact .ct-step__body {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .ct-flow-note {
  margin-top: 1.3rem;
  border: 1px solid var(--line);
  background: rgba(242, 233, 216, 0.05);
}

.page-contact .ct-flow-note summary {
  cursor: pointer;
  padding: 0.85rem 1.1rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--paper);
  list-style: none;
}

.page-contact .ct-flow-note summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-flow-note summary::before {
  content: "＋";
  display: inline-block;
  margin-right: 0.6rem;
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-contact .ct-flow-note[open] summary::before {
  content: "－";
}

.page-contact .ct-flow-note summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .ct-flow-note__body {
  padding: 0 1.1rem 1.1rem;
  border-top: 1px solid var(--line);
}

.page-contact .ct-flow-note__body p {
  margin: 0.85rem 0 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .ct-flow-note__body strong {
  color: var(--paper);
  font-weight: 700;
}

/* ---------- 尾部延伸 ---------- */
.page-contact .ct-tail__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.page-contact .ct-tail__links {
  display: grid;
  gap: 0.45rem;
}

.page-contact .ct-tail__links a {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--yellow);
  text-decoration: none;
  color: var(--paper);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.94rem;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.page-contact .ct-tail__links a:nth-child(2) { border-left-color: var(--cyan); }
.page-contact .ct-tail__links a:nth-child(3) { border-left-color: var(--red); }
.page-contact .ct-tail__links a:nth-child(4) { border-left-color: var(--green); }

.page-contact .ct-tail__links a span {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--ink-faint);
}

.page-contact .ct-tail__links a:hover,
.page-contact .ct-tail__links a:focus-visible {
  background: rgba(248, 243, 231, 0.06);
  border-color: var(--line-strong);
}

.page-contact .ct-tail__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-contact .ct-tail__icp {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.page-contact .ct-tail__meta .ct-copy {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .ct-type__list li {
    grid-template-columns: 8.5em minmax(0, 1fr);
    gap: 0 0.9rem;
    align-items: baseline;
  }

  .page-contact .ct-type__k {
    font-size: 0.72rem;
  }

  .page-contact .ct-row__label {
    min-width: 5.2em;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.86fr);
    gap: clamp(1.8rem, 4vw, 3rem);
  }

  .page-contact .ct-hero__lead h1 {
    font-size: clamp(2.6rem, 4.6vw, 3.5rem);
  }

  .page-contact .ct-type {
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 1.6rem;
  }

  .page-contact .ct-type__side {
    justify-content: flex-start;
    align-content: flex-start;
  }

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

  .page-contact .ct-tail__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(1.6rem, 4vw, 3rem);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .ct-mailcard {
    max-width: 34rem;
  }

  .page-contact .ct-channels__main h2 {
    max-width: 16em;
  }
}

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

  .page-contact .ct-mailcard {
    transform: none;
  }

  .page-contact .ct-stamp {
    transform: none;
  }
}