.page-contact {
  background: var(--ink-0);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-1);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-contact .contact-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  display: block;
  background:
    radial-gradient(120% 90% at 6% 0%, rgba(124, 255, 203, 0.16), transparent 58%),
    linear-gradient(180deg, rgba(4, 6, 11, 0.4) 0%, rgba(4, 6, 11, 0.88) 64%, var(--ink-0) 100%);
}

.page-contact .contact-hero__inner {
  padding: 32px 0 44px;
}

.page-contact .contact-hero__overline {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 9vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ice);
  max-width: 18ch;
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ice-dim);
}

.page-contact .contact-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero__stats .stat {
  border-left: 2px solid var(--line-neon);
  padding-left: 12px;
}

.page-contact .contact-hero__stats .stat__value {
  font-family: var(--font-mono);
  color: var(--neon);
  font-size: 20px;
  display: block;
}

.page-contact .contact-hero__stats .stat__label {
  color: var(--steel);
  font-size: 13px;
}

/* ---------- 联络方式卡 ---------- */
.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .contact-card {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--card-accent, var(--neon));
  padding: 22px 20px 24px;
  box-shadow: var(--shadow-layer);
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-contact .contact-card--mail { --card-accent: var(--neon); }
.page-contact .contact-card--phone { --card-accent: var(--violet); }
.page-contact .contact-card--addr { --card-accent: var(--steel); }

.page-contact .contact-card:hover {
  transform: translateY(-4px);
  border-color: var(--violet);
  border-left-color: var(--card-accent);
}

.page-contact .contact-card__num {
  position: absolute;
  top: 14px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .contact-card__value {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--neon);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 4px;
}

.page-contact .contact-card__value:hover,
.page-contact .contact-card__value:focus-visible {
  color: var(--violet-soft);
  border-bottom-color: var(--violet);
}

.page-contact .contact-card__value--text {
  color: var(--ice);
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .contact-card__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .contact-card__tag {
  margin: 16px 0 0;
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--violet-soft);
  border: 1px solid var(--line-strong);
  padding: 4px 9px;
}

/* ---------- V4 联系入口 ---------- */
.page-contact .v4-panel {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 26px 22px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(139, 92, 246, 0.16) 0%, rgba(124, 255, 203, 0.07) 52%, rgba(4, 6, 11, 0) 100%),
    var(--ink-1);
}

.page-contact .v4-panel__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ice);
}

.page-contact .v4-panel__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .v4-panel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .v4-panel__list li {
  padding: 12px 0 12px 18px;
  position: relative;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ice-dim);
  border-bottom: 1px solid var(--line);
}

.page-contact .v4-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 7px;
  height: 7px;
  background: var(--neon);
  transform: rotate(45deg);
}

/* ---------- 提交要点 ---------- */
.page-contact .section-intro {
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .brief-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-contact .brief-list__item {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .brief-list__idx {
  flex: 0 0 auto;
  width: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--neon);
  padding-top: 2px;
}

.page-contact .brief-list__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ice);
}

.page-contact .brief-list__item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 28px;
}

.page-contact .flow-step {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--line);
  background: transparent;
}

.page-contact .flow-step__dot {
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(124, 255, 203, 0.14);
}

.page-contact .flow-step__head {
  cursor: pointer;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
}

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

.page-contact .flow-step__phase {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ice);
}

.page-contact .flow-step__wait {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon);
  border: 1px solid var(--line-strong);
  padding: 2px 8px;
}

.page-contact .flow-step__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .flow-step__list {
  margin: 12px 0 0;
  padding: 0 0 0 2px;
  list-style: none;
}

.page-contact .flow-step__list li {
  position: relative;
  padding: 5px 0 5px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ice-dim);
}

.page-contact .flow-step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 1px;
  background: var(--violet-soft);
}

.page-contact .flow-step:not([open]) .flow-step__text,
.page-contact .flow-step:not([open]) .flow-step__list {
  display: none;
}

/* ---------- 合作联络 ---------- */
.page-contact .biz-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

.page-contact .biz-card {
  background: var(--ink-1);
  border: 1px solid var(--line);
  border-top: 2px solid var(--violet);
  padding: 20px;
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-contact .biz-card:hover {
  transform: translateY(-4px);
  border-color: var(--violet);
}

.page-contact .biz-card__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet-soft);
}

.page-contact .biz-card__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ice);
}

.page-contact .biz-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .biz-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ice-dim);
}

.page-contact .biz-foot a {
  font-family: var(--font-mono);
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-neon);
  word-break: break-all;
}

.page-contact .biz-foot a:hover,
.page-contact .biz-foot a:focus-visible {
  color: var(--violet-soft);
}

/* ---------- 地址块 ---------- */
.page-contact .addr-block {
  position: relative;
  margin-top: 24px;
  padding: 34px 20px 22px;
  border: 1px solid var(--line-strong);
  background: var(--ink-1);
}

.page-contact .addr-block__ruler {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: repeating-linear-gradient(
    to right,
    var(--line-strong) 0,
    var(--line-strong) 1px,
    transparent 1px,
    transparent 16px
  );
}

.page-contact .addr-block__rows {
  margin: 0;
}

.page-contact .addr-block__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .addr-block__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-contact .addr-block__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ice);
  word-break: break-all;
}

.page-contact .addr-block__val a {
  font-family: var(--font-mono);
  color: var(--neon);
  text-decoration: none;
}

.page-contact .addr-block__val a:hover,
.page-contact .addr-block__val a:focus-visible {
  color: var(--violet-soft);
}

.page-contact .addr-block__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
  max-width: 70ch;
}

/* ---------- 快捷入口 ---------- */
.page-contact .quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .quick {
  padding-bottom: 64px;
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-hero__inner { padding: 44px 0 56px; }

  .page-contact .contact-hero__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .brief-list {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 32px;
  }

  .page-contact .biz-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .addr-block {
    padding: 38px 28px 26px;
  }

  .page-contact .addr-block__row {
    grid-template-columns: 150px 1fr;
    gap: 16px;
    align-items: baseline;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-contact .contact-hero__inner { padding: 56px 0 68px; }

  .page-contact .contact-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
  }

  .page-contact .contact-card { padding: 26px 24px 28px; }

  .page-contact .v4-panel {
    grid-template-columns: 1.35fr 1fr;
    gap: 40px;
    padding: 34px 32px;
  }

  .page-contact .flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-contact .flow-step {
    padding-left: 0;
    padding-top: 30px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-contact .flow-step__dot {
    left: 0;
    top: -5px;
  }

  .page-contact .biz-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .quick { padding-bottom: 88px; }
}

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

  .page-contact .contact-card:hover,
  .page-contact .biz-card:hover {
    transform: none;
  }
}