.page-contact {
  background-color: var(--abyss);
  color: var(--paper);
  overflow-x: hidden;
}

.page-contact .ct-section {
  position: relative;
  padding: clamp(32px, 5vw, 72px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .ct-section--last {
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-contact .ct-head {
  display: grid;
  gap: 10px;
  max-width: 76ch;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.page-contact .ct-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.15;
  letter-spacing: .01em;
}

.page-contact .ct-head p {
  margin: 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding: clamp(24px, 4vw, 56px) 0 clamp(32px, 5vw, 72px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .38;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 88%);
  pointer-events: none;
}

.page-contact .ct-hero__inner {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-contact .ct-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(30px, 7vw, 58px);
  line-height: 1.06;
  letter-spacing: .01em;
}

.page-contact .ct-lede {
  margin: 0 0 22px;
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.85;
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

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

.page-contact .ct-fact {
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}

.page-contact .ct-fact__num {
  display: block;
  color: var(--gold);
  font-size: 15px;
  letter-spacing: .04em;
}

.page-contact .ct-fact__label {
  display: block;
  margin-top: 2px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .ct-hero__figure {
  margin: 0;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 工单 ---------- */
.page-contact .ct-ticket-grid {
  display: grid;
  gap: 22px;
}

.page-contact .ct-ticket-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-contact .ct-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .ct-track__item {
  flex: 1 1 140px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(10, 37, 64, .6);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
}

.page-contact .ct-track__item .mono {
  display: block;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .12em;
  margin-bottom: 2px;
}

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

.page-contact .ct-cat {
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--indigo);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(11, 58, 69, .5), rgba(6, 26, 43, .35));
}

.page-contact .ct-cat h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: .02em;
}

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

.page-contact .ct-sla {
  padding: 15px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(4, 18, 31, .7);
}

.page-contact .ct-sla .badge {
  margin-bottom: 8px;
}

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

/* 表单 */
.page-contact .ct-form {
  padding: clamp(18px, 3vw, 28px);
  border-radius: var(--r-lg);
}

.page-contact .ct-form__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .ct-form__head h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 22px;
  letter-spacing: .02em;
}

.page-contact .ct-form__code {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: .14em;
}

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

.page-contact .ct-field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.page-contact .ct-field label {
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .ct-field input,
.page-contact .ct-field select,
.page-contact .ct-field textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(4, 18, 31, .78);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-contact .ct-field textarea {
  resize: vertical;
  min-height: 120px;
}

.page-contact .ct-field input::placeholder,
.page-contact .ct-field textarea::placeholder {
  color: rgba(168, 191, 201, .55);
}

.page-contact .ct-field input:focus,
.page-contact .ct-field select:focus,
.page-contact .ct-field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-dim);
}

.page-contact .ct-field select option {
  background: var(--archive);
  color: var(--paper);
}

.page-contact .ct-form__foot {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.page-contact .ct-form__note {
  margin: 0;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 渠道 ---------- */
.page-contact .ct-channels {
  display: grid;
  gap: 18px;
}

.page-contact .ct-channel {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(11, 58, 69, .62), rgba(6, 26, 43, .5));
}

.page-contact .ct-channel__tag {
  margin: 0;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-contact .ct-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.3;
  word-break: break-word;
}

.page-contact .ct-channel__value a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 184, 75, .4);
}

.page-contact .ct-channel__value a:hover,
.page-contact .ct-channel__value a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

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

.page-contact .ct-channel .btn {
  justify-self: start;
  margin-top: 4px;
}

.page-contact .ct-channel__figure {
  margin: 0;
}

/* ---------- 地址条带 ---------- */
.page-contact .ct-band {
  display: grid;
  gap: 20px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(115deg, rgba(36, 59, 107, .55), rgba(6, 26, 43, .92));
}

.page-contact .ct-band__label {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-contact .ct-band__value {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.3;
}

.page-contact .ct-band__right h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.2;
}

.page-contact .ct-band__right p {
  margin: 0 0 10px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ---------- 版本反馈 ---------- */
.page-contact .ct-version-grid {
  display: grid;
  gap: 20px;
}

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

.page-contact .ct-checklist li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(10, 37, 64, .55);
}

.page-contact .ct-checklist h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--paper);
}

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

.page-contact .ct-summary {
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--r-lg);
  border-top: 3px solid var(--gold);
}

.page-contact .ct-summary h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: .02em;
}

.page-contact .ct-summary__list {
  margin: 0 0 16px;
  display: grid;
  gap: 10px;
}

.page-contact .ct-summary__row {
  display: grid;
  gap: 3px;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(243, 247, 249, .16);
}

.page-contact .ct-summary__row dt {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-contact .ct-summary__row dd {
  margin: 0;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .ct-summary__note {
  margin: 0 0 16px;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 指引 ---------- */
.page-contact .ct-guide-grid {
  display: grid;
  gap: 16px;
}

.page-contact .ct-guide {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(18px, 3vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(4, 18, 31, .6);
  color: inherit;
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease;
}

.page-contact .ct-guide:hover,
.page-contact .ct-guide:focus-visible {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-contact .ct-guide__num {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-contact .ct-guide h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: .02em;
}

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

.page-contact .ct-guide__go {
  margin-top: 4px;
  color: var(--gold);
  font-size: 14px;
}

/* ---------- 折叠问答 ---------- */
.page-contact .ct-accordion {
  display: grid;
  gap: 10px;
}

.page-contact .ct-accordion details {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(10, 37, 64, .5);
}

.page-contact .ct-accordion summary {
  cursor: pointer;
  padding: 15px 18px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-contact .ct-accordion details[open] summary {
  border-bottom: 1px dashed var(--line);
  color: var(--cyan);
}

.page-contact .ct-accordion .accordion__body {
  padding: 14px 18px 18px;
}

.page-contact .ct-accordion .accordion__body p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 悬浮锚点说明 ---------- */
.page-contact .ct-anchor {
  display: grid;
  gap: 16px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: linear-gradient(100deg, rgba(11, 58, 69, .7), rgba(6, 26, 43, .85));
}

.page-contact .ct-anchor__pulse {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(45, 226, 230, .1);
}

.page-contact .ct-anchor h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.2;
}

.page-contact .ct-anchor p {
  margin: 0;
  max-width: 70ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .ct-form__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

@media (min-width: 900px) {
  .page-contact .ct-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-contact .ct-band {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: center;
  }

  .page-contact .ct-version-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 28px;
    align-items: start;
  }

  .page-contact .ct-anchor {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 22px;
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .ct-ticket-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 34px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-guide,
  .page-contact .ct-field input,
  .page-contact .ct-field select,
  .page-contact .ct-field textarea {
    transition: none;
  }

  .page-contact .ct-guide:hover,
  .page-contact .ct-guide:focus-visible {
    transform: none;
  }
}