/* ===== 联系对接页 ===== */
.page-contact {
  --contact-gap: clamp(1.75rem, 4vw, 3rem);
  --contact-glass: rgba(245, 241, 232, 0.05);
  --contact-body: rgba(245, 241, 232, 0.74);
  --contact-body-dim: rgba(245, 241, 232, 0.64);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: clip;
}

.page-contact .contact-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(2rem, 5vw, 3.25rem);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-amber) 0 48px, transparent 48px 84px);
}

.page-contact .contact-hero .eyebrow {
  color: var(--amber-bright);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 1rem 0 0;
  max-width: 22ch;
}

.page-contact .contact-hero__lede {
  margin: 1.25rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.9;
  color: var(--contact-body);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__facts li {
  position: relative;
  padding-left: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-contact .contact-hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

/* ---- 主体骨架 ---- */
.page-contact .contact-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  padding-top: clamp(2.25rem, 6vw, 4rem);
}

.page-contact .contact-main {
  min-width: 0;
}

/* ---- 档案卡片 ---- */
.page-contact .contact-file {
  position: relative;
  background: var(--paper);
  color: var(--text-ink);
  border-top: 2px solid var(--amber);
  padding: 1.5rem 1.25rem 1.375rem;
}

.page-contact .contact-file::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  background: repeating-linear-gradient(135deg, rgba(200, 150, 62, 0.5) 0 1px, transparent 1px 7px);
}

.page-contact .contact-file__id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--amber-ink);
}

.page-contact .contact-file__title {
  margin: 0.625rem 0 0;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text-ink);
}

.page-contact .contact-file__list {
  margin: 1.125rem 0 0;
  display: grid;
  gap: 0.875rem;
}

.page-contact .contact-file__row {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--paper-dim);
}

.page-contact .contact-file__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-file__row dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--amber-ink);
}

.page-contact .contact-file__row dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-ink);
  word-break: break-word;
}

.page-contact .contact-file__note {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--paper-dim);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: rgba(27, 36, 48, 0.72);
}

/* ---- 章节通用 ---- */
.page-contact .contact-sec {
  padding-top: clamp(2.25rem, 5.5vw, 3.5rem);
}

.page-contact .contact-sec:first-child {
  padding-top: 0;
}

.page-contact .contact-sec__head {
  max-width: 44rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-contact .contact-sec .section__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-contact .contact-sec__title {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-sec__lede {
  margin: 0.875rem 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--contact-body);
}

/* ---- 三步流程 ---- */
.page-contact .steps-figure {
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
}

.page-contact .steps-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  object-fit: cover;
  background: var(--ink-800);
}

.page-contact .steps-figure figcaption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .steps {
  display: grid;
  gap: 1.75rem;
}

.page-contact .step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem 1.25rem 1.125rem;
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-contact .step + .step::before {
  content: "";
  position: absolute;
  left: 2.5rem;
  top: -1.75rem;
  width: 1px;
  height: 1.75rem;
  background: var(--line-amber);
}

.page-contact .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--amber);
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--amber-bright);
}

.page-contact .step--done .step__num {
  border-color: var(--celadon);
  background: rgba(79, 169, 140, 0.14);
  color: var(--celadon-light);
}

.page-contact .step__title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .step__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--celadon-light);
}

.page-contact .step__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.88;
  color: var(--contact-body-dim);
}

.page-contact .step__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.625rem;
  width: 100%;
  margin-top: auto;
  padding: 0.75rem 0 0;
  background: none;
  border: 0;
  border-top: 1px solid var(--line);
  color: var(--amber-bright);
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: color 0.24s ease;
}

.page-contact .step__toggle::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--amber);
}

.page-contact .step__toggle[aria-expanded="true"]::after {
  content: "−";
  color: var(--celadon);
}

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

.page-contact .step__toggle:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 3px;
}

.page-contact .step__panel {
  padding-top: 0.25rem;
}

.page-contact .step__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-contact .step__list li {
  position: relative;
  padding-left: 0.875rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--contact-body-dim);
}

.page-contact .step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 5px;
  height: 5px;
  background: var(--amber);
}

/* ---- 材料清单 ---- */
.page-contact .prepare {
  background: var(--paper);
  color: var(--text-ink);
  border-left: 3px solid var(--amber);
  padding: 1.25rem;
  overflow-x: auto;
}

.page-contact .prepare__table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.page-contact .prepare__table th,
.page-contact .prepare__table td {
  text-align: left;
  vertical-align: top;
  padding: 0.875rem 0.75rem;
  line-height: 1.75;
  border-bottom: 1px solid var(--paper-dim);
}

.page-contact .prepare__table thead th {
  padding-top: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--amber-ink);
  border-bottom: 1px solid var(--amber);
  white-space: nowrap;
}

.page-contact .prepare__table tbody th {
  font-weight: 700;
  color: var(--text-ink);
  white-space: nowrap;
}

.page-contact .prepare__table tbody td {
  color: rgba(27, 36, 48, 0.76);
}

.page-contact .prepare__table tbody tr:last-child th,
.page-contact .prepare__table tbody tr:last-child td {
  border-bottom: 0;
}

.page-contact .prepare__foot {
  margin: 1rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .prepare__foot a {
  color: var(--celadon-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- 客服渠道 ---- */
.page-contact .channels {
  display: grid;
  gap: 1.5rem;
}

.page-contact .channels__figure {
  margin: 0;
}

.page-contact .channels__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  object-fit: cover;
  background: var(--ink-800);
}

.page-contact .channels__figure figcaption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .channels__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.875rem;
}

.page-contact .channels__item {
  padding: 1rem 1.125rem 1.125rem;
  background: var(--contact-glass);
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.page-contact .channels__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .channels__val {
  margin: 0.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .channels__desc {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--contact-body-dim);
}

/* ---- 开通之后 ---- */
.page-contact .after-grid {
  display: grid;
  gap: 1.25rem;
}

.page-contact .after-item {
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .after-item h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .after-item p {
  margin: 0.625rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.88;
  color: var(--contact-body-dim);
}

.page-contact .after-item a {
  color: var(--celadon-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .after-item--wide {
  padding: 1.5rem;
  border-top: 1px solid var(--line-amber);
  background: linear-gradient(180deg, rgba(23, 50, 74, 0.92), rgba(14, 34, 51, 0.35));
}

/* ---- 合作对接 ---- */
.page-contact .partner-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.5rem;
}

.page-contact .partner-item {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.page-contact .partner-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .partner-item__num {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  padding-top: 0.2rem;
}

.page-contact .partner-item__body h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .partner-item__body p {
  margin: 0.625rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--contact-body-dim);
}

/* ---- 收尾 ---- */
.page-contact .contact-outro {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-amber);
}

.page-contact .contact-outro__lead {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .contact-outro__sub {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-outro .btn {
  justify-self: start;
}

/* ---- 响应式 ---- */
@media (min-width: 760px) {
  .page-contact .after-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-contact .after-item--wide {
    grid-column: 1 / -1;
  }

  .page-contact .steps-figure img {
    max-height: 420px;
  }
}

@media (min-width: 900px) {
  .page-contact .steps {
    grid-template-columns: 1fr 1.14fr 1.3fr;
    gap: 1.25rem;
    align-items: stretch;
  }

  .page-contact .step {
    padding: 1.75rem 1.5rem 1.25rem;
  }

  .page-contact .step + .step::before {
    left: -1.25rem;
    top: 3rem;
    width: 1.25rem;
    height: 1px;
  }

  .page-contact .channels {
    grid-template-columns: 1.1fr 1fr;
    gap: 1.75rem;
    align-items: start;
  }

  .page-contact .after-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-shell {
    grid-template-columns: minmax(0, 1fr) 20rem;
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-contact .contact-aside {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 2rem;
    min-width: 0;
  }

  .page-contact .contact-main {
    grid-column: 1;
    grid-row: 1;
  }

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

  .page-contact .contact-outro .btn {
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .step__toggle,
  .page-contact .channels__item {
    transition: none;
  }
}