.page-contact {
  --contact-dash: 2px dashed var(--line);
}

.page-contact [id] {
  scroll-margin-top: 140px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: end;
  margin-top: clamp(22px, 4vw, 44px);
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

.page-contact .contact-hero__copy .display {
  margin: 14px 0 20px;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .contact-hero__media {
  width: 100%;
  min-width: 0;
}

/* ---------- 三个联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 44px);
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: clamp(26px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
}

.page-contact .channel--cyan::before {
  background: linear-gradient(90deg, var(--cyan), rgba(43, 232, 201, 0.06));
}

.page-contact .channel--warm::before {
  background: linear-gradient(90deg, var(--orange), rgba(255, 138, 60, 0.06));
}

.page-contact .channel--violet::before {
  background: linear-gradient(90deg, var(--violet), rgba(124, 92, 255, 0.06));
}

.page-contact .channel:hover {
  transform: translateY(-4px);
  border-color: rgba(43, 232, 201, 0.42);
  box-shadow: var(--shadow-soft);
}

.page-contact .channel__tag {
  display: inline-block;
  margin: 6px 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-contact .channel__value {
  margin: 8px 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .channel__value--text {
  font-size: clamp(15px, 1.4vw, 17px);
  word-break: break-word;
  line-height: 1.7;
}

.page-contact .channel__desc {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .channel__bullets {
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-contact .channel__bullets li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.page-contact .channel__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: var(--pill);
  background: var(--cyan);
  opacity: 0.85;
}

.page-contact .channel--warm .channel__bullets li::before {
  background: var(--orange);
}

.page-contact .channel--violet .channel__bullets li::before {
  background: var(--violet);
}

/* ---------- 受理范围 ---------- */
.page-contact .scope-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 44px);
}

@media (min-width: 680px) {
  .page-contact .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .scope-item {
  min-width: 0;
  padding: clamp(24px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 23, 48, 0.72);
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}

.page-contact .scope-item:hover {
  border-color: rgba(124, 92, 255, 0.5);
  background: rgba(14, 23, 48, 0.95);
}

.page-contact .scope-item__num {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-contact .scope-item .h4 {
  margin: 0 0 10px;
}

.page-contact .scope-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

/* ---------- 处理流程 ---------- */
.page-contact .flow-media {
  max-width: 620px;
  margin: 0 auto clamp(30px, 4vw, 48px);
}

.page-contact .flow-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

@media (min-width: 900px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }
}

.page-contact .flow-step {
  position: relative;
  min-width: 0;
  padding: 24px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(124, 92, 255, 0.16), rgba(14, 23, 48, 0.88) 62%);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}

.page-contact .flow-step:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 92, 255, 0.58);
}

.page-contact .flow-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  border-radius: var(--pill);
  background: var(--violet);
  color: #060a18;
  font-size: 14px;
  font-weight: 700;
}

.page-contact .flow-step .h4 {
  margin: 0 0 10px;
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}

@media (min-width: 900px) {
  .page-contact .flow-step::after {
    content: "";
    position: absolute;
    top: 42px;
    right: -14px;
    width: 28px;
    border-top: var(--contact-dash);
  }

  .page-contact .flow-step:last-child::after {
    content: none;
  }
}

/* ---------- 提交前准备 ---------- */
.page-contact .prepare-panel {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(43, 232, 201, 0.1), rgba(14, 23, 48, 0.94) 42%, rgba(124, 92, 255, 0.14));
}

@media (min-width: 940px) {
  .page-contact .prepare-panel {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
}

.page-contact .prepare-panel__intro .h2 {
  margin: 12px 0 14px;
}

.page-contact .prepare-panel__intro > p {
  margin: 0 0 26px;
  color: var(--muted);
  line-height: 1.85;
}

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

.page-contact .prepare-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(6, 10, 24, 0.5);
}

.page-contact .prepare-list__idx {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.08em;
  padding-top: 4px;
}

.page-contact .prepare-list .h4 {
  margin: 0 0 6px;
}

.page-contact .prepare-list p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------- 常见问题折叠 ---------- */
.page-contact .faq-list {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  padding: 18px clamp(18px, 2.4vw, 26px);
  transition: border-color 0.35s var(--ease);
}

.page-contact .faq-item[open] {
  border-color: rgba(43, 232, 201, 0.42);
}

.page-contact .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .faq-item__mark {
  flex: none;
  color: var(--cyan);
  font-size: 18px;
  transition: transform 0.3s var(--ease);
}

.page-contact .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
}

.page-contact .faq-item p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.page-contact .faq-item p a,
.page-contact .section-head a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 201, 0.4);
}

.page-contact .faq-item p a:hover,
.page-contact .section-head a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 站点信息 ---------- */
.page-contact .siteinfo {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

@media (min-width: 900px) {
  .page-contact .siteinfo {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
    align-items: start;
  }
}

.page-contact .siteinfo__list {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border-top: 1px solid var(--line);
}

.page-contact .siteinfo__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 620px) {
  .page-contact .siteinfo__row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

.page-contact .siteinfo__row dt {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .siteinfo__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink);
  line-height: 1.7;
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .siteinfo__row--text {
  font-family: var(--font-sans);
  font-size: 16px;
  word-break: break-word;
}

.page-contact .siteinfo__aside {
  padding: clamp(22px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 23, 48, 0.7);
}

.page-contact .siteinfo__aside .h4 {
  margin: 0;
}

.page-contact .siteinfo__aside ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .siteinfo__aside li {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .siteinfo__aside a {
  color: var(--cyan);
  text-decoration: none;
  font-size: 15px;
}

.page-contact .siteinfo__aside a:hover {
  text-decoration: underline;
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .flow-step,
  .page-contact .scope-item,
  .page-contact .faq-item__mark {
    transition: none;
  }

  .page-contact .channel:hover,
  .page-contact .flow-step:hover {
    transform: none;
  }
}