.page-contact {
  --ct-line: rgba(107, 118, 131, .28);
  --ct-panel: rgba(14, 22, 38, .66);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  padding-bottom: clamp(26px, 4vw, 42px);
}
.page-contact .ct-hero h1 {
  margin-top: 6px;
}
.page-contact .ct-hero .lead {
  max-width: 62ch;
  margin-top: 14px;
}

/* ---------- 三条渠道：宽度递减，竖线分隔 ---------- */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(22px, 3vw, 34px);
}
.page-contact .ch {
  padding: 20px 0 22px;
  border-top: 1px solid var(--ct-line);
  min-width: 0;
}
.page-contact .ch__idx {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--rock);
}
.page-contact .ch--mail .ch__idx { color: var(--blue); }
.page-contact .ch--phone .ch__idx { color: var(--cyan); }
.page-contact .ch--addr .ch__idx { color: var(--orange); }

.page-contact .ch__val {
  margin: 0;
  font-size: clamp(15px, 2.4vw, 19px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .ch__val--addr {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0;
  color: rgba(242, 239, 233, .88);
}
.page-contact .ch .copy-btn {
  margin-top: 12px;
}
.page-contact .ch__desc {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--rock);
}

/* ---------- 版本资料查询 ---------- */
.page-contact .ct-query {
  align-items: start;
  row-gap: clamp(26px, 4vw, 44px);
}
.page-contact .ct-query__text h2 {
  margin: 6px 0 14px;
}
.page-contact .ct-query__text p {
  color: rgba(242, 239, 233, .82);
}
.page-contact .ct-hint {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--rock);
}
.page-contact .subject-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 20px;
  padding: 14px 16px;
  background: var(--paper);
  border-radius: var(--radius);
}
.page-contact .subject-box__k {
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(7, 11, 20, .5);
}
.page-contact .subject-box__v {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}
.page-contact .subject-box .copy-btn {
  margin-left: auto;
  padding: 7px 13px;
  font-size: 12px;
  color: var(--ink);
  background: rgba(7, 11, 20, .06);
  border: 1px solid rgba(7, 11, 20, .26);
  border-radius: var(--radius);
}
.page-contact .ct-query__fig {
  margin: 0;
}

/* ---------- 填写四步 ---------- */
.page-contact .write-steps {
  list-style: none;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}
.page-contact .write-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 0;
  border-top: 1px solid var(--ct-line);
}
.page-contact .write-step__n {
  grid-row: 1 / span 2;
  font-size: 15px;
  color: var(--cyan);
  letter-spacing: .04em;
}
.page-contact .write-step h3 {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.5;
}
.page-contact .write-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 反馈类别切换 ---------- */
.page-contact .fb-tabs {
  margin-top: clamp(22px, 3vw, 32px);
}
.page-contact .fb-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-contact .fb-tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-contact .fb-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--ct-line);
  border-radius: var(--radius);
  background: var(--ct-panel);
  color: var(--rock);
  font-size: 13px;
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-contact .fb-tab .mono {
  font-size: 11px;
  letter-spacing: .08em;
}

.page-contact #fb-cat-1:checked ~ .fb-tablist label[for="fb-cat-1"],
.page-contact #fb-cat-2:checked ~ .fb-tablist label[for="fb-cat-2"],
.page-contact #fb-cat-3:checked ~ .fb-tablist label[for="fb-cat-3"],
.page-contact #fb-cat-4:checked ~ .fb-tablist label[for="fb-cat-4"],
.page-contact #fb-cat-1:focus-visible ~ .fb-tablist label[for="fb-cat-1"],
.page-contact #fb-cat-2:focus-visible ~ .fb-tablist label[for="fb-cat-2"],
.page-contact #fb-cat-3:focus-visible ~ .fb-tablist label[for="fb-cat-3"],
.page-contact #fb-cat-4:focus-visible ~ .fb-tablist label[for="fb-cat-4"] {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(34, 211, 238, .1);
}
.page-contact #fb-cat-1:checked ~ .fb-tablist label[for="fb-cat-1"] .mono,
.page-contact #fb-cat-2:checked ~ .fb-tablist label[for="fb-cat-2"] .mono,
.page-contact #fb-cat-3:checked ~ .fb-tablist label[for="fb-cat-3"] .mono,
.page-contact #fb-cat-4:checked ~ .fb-tablist label[for="fb-cat-4"] .mono {
  color: var(--cyan);
}

.page-contact .fb-panel {
  display: none;
  padding-top: clamp(20px, 3vw, 30px);
}
.page-contact #fb-cat-1:checked ~ .fb-panels .fb-panel--1,
.page-contact #fb-cat-2:checked ~ .fb-panels .fb-panel--2,
.page-contact #fb-cat-3:checked ~ .fb-panels .fb-panel--3,
.page-contact #fb-cat-4:checked ~ .fb-panels .fb-panel--4 {
  display: block;
}
.page-contact .fb-panel h3 {
  margin: 0 0 10px;
  font-size: 17px;
}
.page-contact .fb-panel__lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 239, 233, .78);
  max-width: 68ch;
}
.page-contact .fill-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ct-line);
}
.page-contact .fill-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--ct-line);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 239, 233, .84);
}
.page-contact .fill-list .mono {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 发出前清单 ---------- */
.page-contact .checklist {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--ct-line);
}
.page-contact .chk-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.page-contact .chk {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(242, 239, 233, .86);
}
.page-contact .chk input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 0;
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(14, 22, 38, .6);
  cursor: pointer;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}
.page-contact .chk input:checked {
  border-color: var(--neon);
  background: rgba(74, 222, 128, .12);
}
.page-contact .chk input:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--neon);
  border-bottom: 2px solid var(--neon);
  transform: rotate(40deg);
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(18px, 3vw, 28px);
}
.page-contact .rhythm__item {
  padding: 18px 0;
  border-top: 1px solid var(--ct-line);
}
.page-contact .rhythm__n {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--paper);
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 3px;
}
.page-contact .rhythm__item p {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 自助确认引导 ---------- */
.page-contact .ct-links {
  padding: clamp(22px, 3.5vw, 36px);
}
.page-contact .ct-links h2 {
  margin: 6px 0 20px;
  font-size: clamp(19px, 2.6vw, 25px);
}
.page-contact .ct-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.page-contact .ct-links__list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px solid var(--ct-line);
}
.page-contact .ct-links__list a {
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .5);
  align-self: flex-start;
  padding-bottom: 2px;
}
.page-contact .ct-links__list a:hover,
.page-contact .ct-links__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-contact .ct-links__list span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 地址与到访 ---------- */
.page-contact .ct-visit {
  align-items: start;
  row-gap: clamp(26px, 4vw, 44px);
}
.page-contact .ct-visit__text h2 {
  margin: 6px 0 14px;
}
.page-contact .ct-visit__text p {
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 239, 233, .82);
}
.page-contact .visit-meta {
  margin: 24px 0 0;
  border-top: 1px solid var(--ct-line);
}
.page-contact .visit-meta__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ct-line);
}
.page-contact .visit-meta dt {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--rock);
}
.page-contact .visit-meta dd {
  margin: 0;
  font-size: 13.5px;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .ct-visit__fig {
  margin: 0;
  aspect-ratio: 3 / 2;
}

/* ---------- 响应式 ---------- */
@media (min-width: 660px) {
  .page-contact .chk-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px 28px;
  }
  .page-contact .ct-links__list {
    grid-template-columns: 1fr 1fr;
    column-gap: 40px;
  }
  .page-contact .ct-links__list li:nth-child(1),
  .page-contact .ct-links__list li:nth-child(2) {
    border-top: 1px solid var(--ct-line);
  }
}

@media (min-width: 860px) {
  .page-contact .channels {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1.15fr) minmax(0, 1fr);
  }
  .page-contact .ch {
    border-top: 0;
    border-left: 1px solid var(--ct-line);
    padding: 4px 26px 8px;
  }
  .page-contact .ch:first-child {
    border-left: 0;
    padding-left: 0;
  }
  .page-contact .ch:last-child {
    padding-right: 0;
  }
  .page-contact .write-steps {
    grid-template-columns: 1fr 1fr;
    column-gap: 52px;
  }
  .page-contact .rhythm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .rhythm__item {
    padding: 18px 26px 6px 0;
    border-top: 1px solid var(--ct-line);
  }
  .page-contact .rhythm__item + .rhythm__item {
    padding-left: 26px;
    border-left: 1px solid var(--ct-line);
  }
  .page-contact .rhythm__item:last-child {
    padding-right: 0;
  }
}

@media (min-width: 1020px) {
  .page-contact .ct-visit__fig {
    aspect-ratio: 3 / 2;
  }
}