.page-contact {
  --cf-panel: var(--ink-800);
  --cf-cut: 18px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(44px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(116deg, transparent 63%, rgba(31, 107, 255, .08) 63.1%, rgba(31, 107, 255, .08) 63.6%, transparent 63.7%),
    linear-gradient(116deg, transparent 76%, rgba(53, 240, 208, .06) 76.1%, rgba(53, 240, 208, .06) 76.5%, transparent 76.6%);
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  margin-top: clamp(22px, 4vw, 40px);
}

.page-contact .contact-hero__title {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 7.4vw, 76px);
  line-height: .98;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .contact-hero__main .lede {
  max-width: 56ch;
  color: var(--paper-dim);
}

.page-contact .contact-mail {
  margin-top: clamp(26px, 4vw, 38px);
  padding: clamp(16px, 3vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(180deg, rgba(19, 28, 43, .78), rgba(11, 17, 28, .82));
  clip-path: polygon(0 0, calc(100% - var(--cf-cut)) 0, 100% var(--cf-cut), 100% 100%, var(--cf-cut) 100%, 0 calc(100% - var(--cf-cut)));
}

.page-contact .contact-mail__label {
  display: block;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-contact .contact-mail__addr {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(18px, 4.4vw, 34px);
  line-height: 1.22;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .contact-mail__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 18px;
}

.page-contact .contact-mail__hint {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-contact .contact-hero__aside {
  position: relative;
  padding: 14px;
  background: var(--cf-panel);
  border: 1px solid var(--line);
}

.page-contact .status-panel {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .status-panel__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-contact .status-list__item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  font-size: 13px;
  color: var(--paper-dim);
  background: rgba(19, 28, 43, .66);
  border: 1px solid var(--line-soft);
}

.page-contact .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 3px rgba(140, 151, 168, .16);
}

.page-contact .status-list__item.is-on {
  border-color: rgba(53, 240, 208, .38);
}

.page-contact .status-list__item.is-on .status-dot {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 208, .2);
}

.page-contact .status-list__item.is-on .status-list__val {
  color: var(--cyan);
}

.page-contact .status-list__val {
  font-size: 12px;
  white-space: nowrap;
  color: var(--paper-dim);
}

/* ---------- 流程 ---------- */
.page-contact .flow-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 4vw, 38px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .flow-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-900);
  transition: background var(--t-fast);
}

.page-contact .flow-step:hover {
  background: var(--ink-800);
}

.page-contact .flow-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 0;
  background: var(--orange);
  transition: height var(--t);
}

.page-contact .flow-step:hover::after {
  height: 100%;
}

.page-contact .flow-step__index {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--orange);
}

.page-contact .flow-step__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 800;
  color: var(--paper);
  letter-spacing: .01em;
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .flow-step__meta {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--blue);
}

/* ---------- 登记信息三卡 ---------- */
.page-contact .info-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 4vw, 38px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .info-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3.2vw, 32px);
  background: var(--cf-panel);
  transition: border-color var(--t-fast), background var(--t-fast);
}

.page-contact .info-card:hover {
  background: var(--ink-700);
}

.page-contact .info-card__label {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .info-card__value {
  margin: 0;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .info-card__value--num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 36px);
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-contact .info-card__value--addr {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

.page-contact .info-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .info-card__note {
  margin: 0;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 场景折叠 ---------- */
.page-contact .scene-list {
  margin-top: clamp(22px, 4vw, 34px);
  border-top: 1px solid var(--line);
}

.page-contact .scene {
  border-bottom: 1px solid var(--line);
}

.page-contact .scene__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: clamp(16px, 2.4vw, 22px) 4px;
  cursor: pointer;
  list-style: none;
  transition: background var(--t-fast);
}

.page-contact .scene__summary::-webkit-details-marker {
  display: none;
}

.page-contact .scene__summary:hover {
  background: rgba(19, 28, 43, .5);
}

.page-contact .scene__summary::before {
  content: "";
  position: absolute;
}

.page-contact .scene__index {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-contact .scene__name {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .scene__tag {
  font-size: 11px;
  letter-spacing: .1em;
  padding: 4px 9px;
  color: var(--blue);
  border: 1px solid rgba(31, 107, 255, .44);
  white-space: nowrap;
}

.page-contact .scene__arrow {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-contact .scene__arrow::before,
.page-contact .scene__arrow::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform var(--t), background var(--t-fast);
}

.page-contact .scene__arrow::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-contact .scene__arrow::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-contact .scene[open] .scene__arrow::after {
  transform: scaleY(0);
}

.page-contact .scene[open] .scene__arrow::before {
  background: var(--cyan);
}

.page-contact .scene[open] .scene__name {
  color: var(--cyan);
}

.page-contact .scene__body {
  padding: 0 4px clamp(20px, 3vw, 30px);
  max-width: 76ch;
}

.page-contact .scene__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

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

.page-contact .scene__body li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .scene__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

.page-contact .scene__expect {
  margin: 0;
  padding: 10px 14px;
  border-left: 2px solid var(--cyan);
  background: rgba(53, 240, 208, .06);
  color: var(--paper-dim);
  font-size: 12.5px;
  line-height: 1.7;
}

/* ---------- 渠道核对 ---------- */
.page-contact .verify-grid {
  display: grid;
  gap: clamp(26px, 4.5vw, 48px);
  align-items: start;
  margin-top: clamp(10px, 2vw, 18px);
}

.page-contact .verify-copy .prose {
  color: var(--paper-dim);
}

.page-contact .verify-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .verify-list__item {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .verify-list__item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .verify-list__mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  border: 1px solid rgba(53, 240, 208, .5);
  transform: rotate(45deg);
  flex: none;
}

.page-contact .verify-list__mark::before {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--cyan);
  opacity: .7;
}

.page-contact .verify-note {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------- 写信清单 ---------- */
.page-contact .check-list {
  list-style: none;
  margin: clamp(20px, 3.5vw, 34px) 0 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .check-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: clamp(18px, 2.6vw, 24px) 0;
  border-top: 1px solid var(--line);
  transition: background var(--t-fast);
}

.page-contact .check-list__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .check-list__item:hover {
  background: rgba(19, 28, 43, .46);
}

.page-contact .check-list__num {
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .04em;
  line-height: 1.2;
}

.page-contact .check-list__body h3 {
  margin: 0 0 8px;
}

.page-contact .check-list__body h3,
.page-contact .check-list__body .h4 {
  color: var(--paper);
}

.page-contact .check-list__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 更多入口条 ---------- */
.page-contact .more-strip {
  display: grid;
  gap: 18px;
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: linear-gradient(100deg, rgba(31, 107, 255, .1), rgba(5, 7, 12, 0) 62%);
}

.page-contact .more-strip__text {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .more-strip__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 收口 ---------- */
.page-contact .contact-foot {
  padding: clamp(18px, 3vw, 28px) 0 clamp(30px, 5vw, 48px);
  border-top: 1px solid var(--line);
}

.page-contact .back-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--t-fast);
}

.page-contact .back-top:hover {
  color: var(--cyan);
}

.page-contact .back-top__arrow {
  display: inline-block;
  transition: transform var(--t);
}

.page-contact .back-top:hover .back-top__arrow {
  transform: translateY(-3px);
}

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

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

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

@media (min-width: 860px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }

  .page-contact .contact-hero__aside {
    margin-top: 46px;
  }

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

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

  .page-contact .verify-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }
}

@media (min-width: 1080px) {
  .page-contact .check-list__item {
    gap: 26px;
  }

  .page-contact .check-list__num {
    min-width: 64px;
  }
}

@media (max-width: 520px) {
  .page-contact .scene__summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
    row-gap: 8px;
  }

  .page-contact .scene__tag {
    grid-column: 2 / 3;
    justify-self: start;
  }

  .page-contact .scene__arrow {
    grid-row: 1 / 2;
    grid-column: 3 / 4;
  }
}