/* ===== 联系通道 /contact ===== */

.page-contact {
  position: relative;
  overflow-x: clip;
  color: var(--paper);
  font-family: var(--font-body);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 26px 0 40px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -110px;
  right: -140px;
  width: min(600px, 86vw);
  height: 320px;
  background: var(--grad-highland);
  opacity: .4;
  clip-path: polygon(14% 0, 100% 0, 100% 74%, 0 100%);
  z-index: -1;
}

.page-contact .hero-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-contact h1 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-1);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .hero-lede {
  max-width: 44em;
  margin: 0 0 24px;
  font-size: var(--fs-5);
  line-height: 1.78;
  color: rgba(242, 246, 252, .82);
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-facts li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 13px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 39, 74, .62);
  font-size: var(--fs-7);
  line-height: 1.5;
  color: var(--muted);
}

.page-contact .hero-facts li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

.page-contact .hero-facts li:nth-child(2)::before { background: var(--red); }
.page-contact .hero-facts li:nth-child(3)::before { background: var(--green); }

/* ---------- 区块节奏与标题 ---------- */

.page-contact .contact-section {
  padding: clamp(48px, 7vw, 82px) 0;
}

.page-contact h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-2);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .section-lede {
  max-width: 44em;
  margin: 0 0 28px;
  font-size: var(--fs-5);
  line-height: 1.78;
  color: rgba(242, 246, 252, .76);
}

/* ---------- 事项清单 + 说明卡 ---------- */

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-contact .contact-rail {
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel-hi);
  box-shadow: var(--shadow-1);
}

.page-contact .topic-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: stretch;
}

.page-contact .topic-list .filter-chip {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  font-size: var(--fs-6);
  border-radius: var(--radius-sm);
}

.page-contact .dot {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(242, 246, 252, .07);
}

.page-contact .dot--blue { background: var(--blue); }
.page-contact .dot--gold { background: var(--gold); }
.page-contact .dot--red { background: var(--red); }
.page-contact .dot--green { background: var(--green); }

.page-contact .contact-cards {
  display: grid;
  gap: 16px;
}

.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  padding: 22px 22px 22px 26px;
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--line);
}

.page-contact .contact-card[data-category="use"]::before { background: var(--blue); }
.page-contact .contact-card[data-category="data"]::before { background: var(--gold); }
.page-contact .contact-card[data-category="fix"]::before { background: var(--red); }
.page-contact .contact-card[data-category="idea"]::before { background: var(--green); }

.page-contact .contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-contact .contact-card__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-4);
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .contact-card__body {
  margin: 0 0 14px;
  font-size: var(--fs-6);
  line-height: 1.78;
  color: rgba(242, 246, 252, .78);
}

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

.page-contact .case-list li {
  padding: 5px 11px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: var(--fs-7);
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 联系渠道 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-contact .channel-stack {
  display: grid;
  gap: 14px;
}

.page-contact .channel-block {
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(18, 39, 74, .6);
}

.page-contact .channel-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .contact-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.page-contact .contact-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(15px, 3.8vw, 20px);
  line-height: 1.4;
  color: var(--gold);
  word-break: break-all;
}

.page-contact .contact-value--addr {
  font-size: clamp(14px, 3.2vw, 17px);
  color: var(--paper);
  word-break: break-word;
}

.page-contact .channel-note {
  margin: 10px 0 0;
  font-size: var(--fs-7);
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .06em;
}

.page-contact .channel-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .channel-figure img,
.page-contact .flow-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 四步流程横带 ---------- */

.page-contact .flow-banner {
  margin: 0 0 30px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .flow-band-wrap {
  position: relative;
}

.page-contact .flow-line {
  display: none;
}

.page-contact .flow-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  position: relative;
  z-index: 1;
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.page-contact .flow-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: var(--fs-3);
  line-height: 1;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-contact .flow-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-5);
  line-height: 1.36;
  color: var(--paper);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.72;
  color: rgba(242, 246, 252, .76);
}

.page-contact .flow-step:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: var(--shadow-2);
}

/* ---------- 纠错要点面板 ---------- */

.page-contact .fix-panel {
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--grad-night);
  box-shadow: var(--shadow-1);
}

.page-contact .fix-panel .section-lede {
  margin-bottom: 24px;
}

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

.page-contact .fix-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-contact .fix-key {
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .1em;
  color: var(--gold);
}

.page-contact .fix-val {
  font-size: var(--fs-6);
  line-height: 1.74;
  color: rgba(242, 246, 252, .8);
}

.page-contact .fix-tail {
  margin: 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line-soft);
  font-size: var(--fs-6);
  line-height: 1.74;
  color: rgba(242, 246, 252, .78);
}

/* ---------- 回复节奏 ---------- */

.page-contact .hours-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .hours-card {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(18, 39, 74, .5);
}

.page-contact .hours-card__key {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .hours-card__val {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: var(--fs-4);
  line-height: 1.2;
  color: var(--gold);
}

.page-contact .hours-card p {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.74;
  color: rgba(242, 246, 252, .78);
}

/* ---------- 折叠问答 ---------- */

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

.page-contact .qa {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel-hi);
  overflow: hidden;
}

.page-contact .qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-5);
  line-height: 1.5;
  color: var(--paper);
}

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

.page-contact .qa summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  line-height: 1;
  color: var(--gold);
  transition: transform .24s ease;
}

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

.page-contact .qa__body {
  padding: 0 20px 18px;
  font-size: var(--fs-6);
  line-height: 1.78;
  color: rgba(242, 246, 252, .78);
}

.page-contact .qa__body p {
  margin: 0;
}

/* ---------- 站点信息 ---------- */

.page-contact .site-facts {
  display: grid;
  margin: 0 0 22px;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .site-facts > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .site-facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: .12em;
  color: var(--muted);
}

.page-contact .site-facts dd {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .site-facts dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.page-contact .site-links {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .site-links a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 109, 224, .45);
}

.page-contact .site-links a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .fix-list li {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-contact .site-facts > div {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-contact .flow-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .flow-line {
    display: block;
    position: absolute;
    top: 40px;
    left: 0;
    width: 100%;
    height: 12px;
    z-index: 0;
    pointer-events: none;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(210px, 274px) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .flow-step,
  .page-contact .qa summary::after {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .flow-step:hover {
    transform: none;
  }
}
<<<END>>>