/* ===== 联系通道 · page-contact ===== */
.page-contact {
  --pc-line: rgba(110, 140, 133, .34);
  --pc-line-soft: rgba(110, 140, 133, .16);
  --pc-raise: rgba(59, 232, 196, .07);
  --pc-ink-soft: rgba(36, 28, 21, .64);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-abyss);
  padding-block: clamp(46px, 8vw, 96px) clamp(44px, 7vw, 86px);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: saturate(.5) brightness(.7);
}

.page-contact .contact-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(7, 28, 23, .52) 0%, rgba(7, 28, 23, .86) 58%, var(--ink-abyss) 100%),
    repeating-linear-gradient(90deg, rgba(59, 232, 196, .05) 0 1px, transparent 1px 88px);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero__title {
  font-family: var(--font-narrow);
  font-size: clamp(40px, 9vw, 88px);
  line-height: .96;
  letter-spacing: -.025em;
  margin: 16px 0 0;
  max-width: 14ch;
  color: var(--white);
}

.page-contact .contact-hero__lede {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 54ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: rgba(247, 250, 248, .84);
}

.page-contact .contact-hero__index {
  list-style: none;
  margin: clamp(28px, 4.4vw, 48px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--neon-line);
  display: grid;
  gap: 12px;
  max-width: 680px;
}

.page-contact .contact-hero__index li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(247, 250, 248, .8);
}

.page-contact .contact-hero__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--neon);
}

/* ---------- 三条通道 ---------- */
.page-contact .contact-channels {
  background: var(--ink-deep);
}

.page-contact .channel-grid {
  display: grid;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .channel {
  position: relative;
  padding: clamp(22px, 3vw, 34px) 0 clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--pc-line);
  transition: background 220ms var(--ease), padding-inline 220ms var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: var(--neon);
  transition: width 260ms var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  background: var(--pc-raise);
  padding-inline: clamp(12px, 1.8vw, 22px);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  width: 100%;
}

.page-contact .channel__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--neon);
}

.page-contact .channel__title {
  font-family: var(--font-narrow);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1.1;
  letter-spacing: -.015em;
  margin: 12px 0 10px;
  color: var(--white);
}

.page-contact .channel__scope {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(247, 250, 248, .76);
}

.page-contact .channel__value {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--neon);
  word-break: break-all;
}

.page-contact .channel__meta {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel__meta a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .channel__meta a:hover,
.page-contact .channel__meta a:focus-visible {
  color: var(--white);
}

/* ---------- 电话与来信 ---------- */
.page-contact .addr-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .eyebrow--dark {
  color: var(--pc-ink-soft);
}

.page-contact .addr-lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
}

.page-contact .addr-list {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  border-top: 1px solid rgba(36, 28, 21, .24);
}

.page-contact .addr-item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 24px;
  align-items: baseline;
  justify-content: space-between;
  padding: 15px 0;
  border-bottom: 1px solid rgba(36, 28, 21, .14);
}

.page-contact .addr-item dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--pc-ink-soft);
}

.page-contact .addr-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper-ink);
  word-break: break-all;
}

.page-contact .addr-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(36, 28, 21, .78);
}

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

.page-contact .addr-figure .figure__media {
  width: 100%;
  display: block;
  object-fit: cover;
  border: 2px solid var(--paper-ink);
}

/* ---------- 响应时效 ---------- */
.page-contact .contact-sla {
  background: var(--ink-deep);
}

.page-contact .sla-grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
}

.page-contact .sla-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 clamp(18px, 2.6vw, 30px);
  border-left: 2px solid var(--amber);
  display: grid;
  gap: clamp(20px, 2.8vw, 32px);
}

.page-contact .sla-item {
  position: relative;
}

.page-contact .sla-item__mark {
  position: absolute;
  left: calc(-1 * clamp(18px, 2.6vw, 30px) - 13px);
  top: 2px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  background: var(--ink-deep);
  border: 1px solid var(--amber);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-contact .sla-item__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(20px, 2.4vw, 24px);
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .sla-item__text {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(247, 250, 248, .76);
}

/* ---------- 联系前自查 ---------- */
.page-contact .contact-selfcheck {
  background: var(--ink-deep);
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .selfcheck-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .selfcheck-head .section__note a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .selfcheck-head .section__note a:hover,
.page-contact .selfcheck-head .section__note a:focus-visible {
  color: var(--white);
}

.page-contact .selfcheck-list {
  display: grid;
  gap: 10px;
}

.page-contact .selfcheck {
  border: 1px solid var(--pc-line);
  background: rgba(7, 28, 23, .5);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-contact .selfcheck:hover,
.page-contact .selfcheck[open] {
  border-color: var(--neon-line);
  background: var(--pc-raise);
}

.page-contact .selfcheck > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .selfcheck > summary::-webkit-details-marker { display: none; }

.page-contact .selfcheck > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--neon);
  transition: transform 220ms var(--ease);
}

.page-contact .selfcheck[open] > summary::after { transform: rotate(45deg); }

.page-contact .selfcheck > summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: -2px;
}

.page-contact .selfcheck p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(247, 250, 248, .78);
}

.page-contact .selfcheck p a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .selfcheck p a:hover,
.page-contact .selfcheck p a:focus-visible {
  color: var(--white);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-cta {
  background: var(--ink-abyss);
}

.page-contact .contact-cta__inner {
  max-width: 760px;
}

.page-contact .contact-cta__title {
  font-family: var(--font-narrow);
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 14px 0 0;
  color: var(--white);
}

.page-contact .contact-cta__text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(247, 250, 248, .78);
}

.page-contact .contact-cta__acts {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 860px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid var(--pc-line);
  }

  .page-contact .channel {
    border-top: 0;
    border-left: 1px solid var(--pc-line);
    padding: clamp(24px, 3vw, 36px) clamp(18px, 2.2vw, 28px) clamp(26px, 3vw, 38px);
  }

  .page-contact .channel:last-child {
    border-right: 1px solid var(--pc-line);
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within {
    padding-inline: clamp(18px, 2.2vw, 28px);
  }

  .page-contact .channel::before {
    left: 0;
  }

  .page-contact .sla-grid {
    grid-template-columns: 3fr 9fr;
    align-items: start;
  }

  .page-contact .selfcheck-grid {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-contact .addr-grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }
}

@media (max-width: 859px) {
  .page-contact .contact-hero__index li {
    font-size: 14px;
  }

  .page-contact .addr-item {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .selfcheck,
  .page-contact .selfcheck > summary::after {
    transition: none;
  }
}