.page-contact {
  font-family: var(--font-body);
  color: var(--paper);
  background: var(--ink-900);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-contact .crumbs a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 首屏 ---------- */
.pc-hero {
  max-width: 900px;
  padding: clamp(22px, 4vw, 42px) 0 clamp(20px, 3vw, 32px);
}
.pc-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
}
.pc-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.08;
  color: var(--paper);
}
.pc-hero__lead {
  max-width: var(--reading);
  margin: 0 0 20px;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.8;
  color: var(--paper-2);
}
.pc-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 顶部横幅 ---------- */
.pc-banner {
  margin: 0;
  border: var(--hair);
  background: var(--ink-800);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}
.pc-banner img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 章节骨架 ---------- */
.pc-sec {
  padding: clamp(34px, 5vw, 58px) 0;
}
.pc-sec + .pc-sec {
  border-top: var(--hair-soft);
}
.pc-sec > .section-head {
  margin-bottom: clamp(16px, 2.6vw, 26px);
}
.pc-sec__lead {
  max-width: var(--reading);
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-2);
}
.pc-sec__foot {
  max-width: var(--reading);
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}
.pc-sec__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 224, 192, 0.4);
}
.pc-sec__foot a:hover,
.pc-sec__foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 问题类型切换 ---------- */
.qtype {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(16px, 2.4vw, 22px);
}
.qtype__opt {
  position: relative;
  display: inline-flex;
}
.qtype__opt input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}
.qtype__opt span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 14px;
  border: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--stone);
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}
.qtype__opt span:hover {
  color: var(--paper);
  border-color: var(--cyan);
}
.qtype__opt input:checked + span {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
}
.qtype__opt input:focus-visible + span {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 通道卡片 ---------- */
.chan-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.chan {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(20px, 2.8vw, 30px);
  border: var(--hair);
  background: var(--ink-800);
  box-shadow: var(--shadow-panel);
  transition: outline-color 0.16s ease;
}
.chan__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stone);
}
.chan__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.25;
  color: var(--paper);
}
.chan__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.1vw, 21px);
  letter-spacing: 0;
  line-height: 1.4;
  color: var(--cyan);
  word-break: break-word;
}
.chan__value--sm {
  font-size: clamp(13px, 1.5vw, 15px);
  line-height: 1.65;
  color: var(--paper-2);
}
.chan__note {
  margin: auto 0 0;
  padding-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

.chan--mail {
  background: var(--paper);
  border-color: var(--paper-2);
  color: var(--text-ink);
}
.chan--mail .chan__label {
  color: var(--orange-ink);
}
.chan--mail .chan__title {
  color: var(--text-ink);
}
.chan--mail .chan__value {
  color: var(--orange-ink);
  border-bottom: 2px solid rgba(201, 58, 5, 0.25);
  padding-bottom: 6px;
}
.chan--mail .chan__note {
  color: rgba(20, 18, 14, 0.72);
}

.chan--phone {
  background: var(--ink-700);
  border-color: var(--cyan);
}
.chan--phone .chan__title {
  color: var(--paper);
}

.chan--addr {
  position: relative;
  overflow: hidden;
}
.chan--addr::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(26, 74, 59, 0.75) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26, 74, 59, 0.75) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.7;
  pointer-events: none;
}
.chan--addr > * {
  position: relative;
  z-index: 1;
}

/* 选中问题类型后的推荐高亮 */
.pc-channels:has(#qtype-export:checked) .chan--mail,
.pc-channels:has(#qtype-data:checked) .chan--mail,
.pc-channels:has(#qtype-partner:checked) .chan--mail {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
  box-shadow: var(--shadow-float);
}
.pc-channels:has(#qtype-live:checked) .chan--phone {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
  box-shadow: var(--shadow-float);
}

/* ---------- 响应时段 ---------- */
.pc-timing {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}
.pc-timing__hours {
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--hair);
  background: var(--ink-800);
}
.pc-timing__track {
  position: relative;
  height: 14px;
  background: var(--ink-700);
  border-radius: var(--radius);
  overflow: hidden;
}
.pc-timing__fill {
  position: absolute;
  inset: 0 0 0 0;
  background: linear-gradient(90deg, rgba(255, 178, 35, 0.55), var(--amber));
}
.pc-timing__scale {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}
.pc-timing__mark--end {
  color: var(--stone);
}
.pc-timing__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-700);
  border: var(--hair);
}
.pc-timing__card {
  padding: clamp(16px, 2.4vw, 22px);
  background: var(--ink-900);
}
.pc-timing__q {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.45;
  color: var(--paper);
}
.pc-timing__a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}
.pc-timing__a strong {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--cyan);
}

/* ---------- 准备清单 ---------- */
.pc-prep {
  border: var(--hair);
  background: var(--paper);
  color: var(--text-ink);
}
.pc-prep__head {
  display: none;
}
.pc-prep__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.pc-prep__row + .pc-prep__row {
  border-top: 1px solid var(--paper-2);
}
.pc-prep__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 3px;
  padding: 14px clamp(14px, 2vw, 20px);
  cursor: pointer;
}
.pc-prep__box {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--orange);
  cursor: pointer;
}
.pc-prep__name {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--text-ink);
}
.pc-prep__why {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(20, 18, 14, 0.7);
}
.pc-prep__eg {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--orange-ink);
}
.pc-prep__box:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}
.pc-prep__item:has(.pc-prep__box:checked) {
  background: var(--paper-2);
}
.pc-prep__item:has(.pc-prep__box:checked) .pc-prep__name {
  text-decoration: line-through;
  text-decoration-color: rgba(201, 58, 5, 0.6);
}

/* ---------- 纠错 / 合作双栏 ---------- */
.pc-duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 22px);
}
.pc-duo__col {
  padding: clamp(20px, 2.8vw, 28px);
  border: var(--hair);
  background: var(--ink-800);
}
.pc-duo__col--alt {
  border-left: 3px solid var(--orange);
}
.pc-duo__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(19px, 2.3vw, 23px);
  color: var(--paper);
}
.pc-duo__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-2);
}
.pc-duo__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  border-top: var(--hair-soft);
}
.pc-duo__list li {
  display: grid;
  gap: 2px;
  padding: 11px 0;
  border-bottom: var(--hair-soft);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-2);
}
.pc-duo__lk {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
}
.pc-duo__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.pc-duo__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 224, 192, 0.4);
}
.pc-duo__note a:hover,
.pc-duo__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 折叠块 */
.pc-fold {
  margin: 0 0 14px;
  border: var(--hair-soft);
  background: var(--ink-900);
}
.pc-fold summary {
  padding: 13px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}
.pc-fold summary::-webkit-details-marker {
  display: none;
}
.pc-fold summary::before {
  content: "+ ";
  color: var(--orange);
}
.pc-fold[open] summary::before {
  content: "− ";
}
.pc-fold summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}
.pc-fold__body {
  padding: 0 16px 16px;
}
.pc-fold__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-2);
}
.pc-fold__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

/* ---------- 到访 ---------- */
.pc-visit {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}
.pc-visit__fig {
  margin: 0;
  border: var(--hair);
  background: var(--ink-800);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}
.pc-visit__fig img {
  display: block;
  width: 100%;
  height: auto;
}
.pc-visit__body p {
  max-width: var(--reading);
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--paper-2);
}
.pc-visit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .pc-prep__head {
    display: grid;
    grid-template-columns: 32px minmax(130px, 0.85fr) minmax(0, 1.5fr) minmax(0, 1fr);
    colum-gap: 14px;
    column-gap: 14px;
    padding: 12px clamp(14px, 2vw, 20px);
    background: var(--ink-800);
    border-bottom: 1px solid var(--ink-700);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--cyan);
  }
  .pc-prep__item {
    grid-template-columns: 32px minmax(130px, 0.85fr) minmax(0, 1.5fr) minmax(0, 1fr);
    column-gap: 14px;
    row-gap: 0;
    padding: 15px clamp(14px, 2vw, 20px);
    align-items: baseline;
  }
  .pc-prep__box {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    margin-top: 3px;
  }
  .pc-prep__name {
    grid-column: 2;
    grid-row: 1;
    font-size: 15.5px;
  }
  .pc-prep__why {
    grid-column: 3;
    grid-row: 1;
  }
  .pc-prep__eg {
    grid-column: 4;
    grid-row: 1;
    font-size: 12.5px;
  }
  .pc-timing__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .chan-grid {
    grid-template-columns: 1.55fr 1fr 0.78fr;
    align-items: stretch;
    gap: 16px;
  }
  .pc-timing {
    grid-template-columns: minmax(280px, 0.7fr) minmax(0, 2fr);
    align-items: start;
  }
  .pc-timing__hours {
    position: sticky;
    top: calc(var(--cmdbar-h) + 20px);
  }
  .pc-duo {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .pc-visit {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }
}
<<<END>>>