.page-faq {
  background: var(--paper);
  color: var(--ink);
}

/* 面包屑 */
.page-faq .page-faq__crumb {
  padding-block: 18px 0;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-faq .breadcrumb a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--sky);
  border-bottom-color: var(--sky);
}

/* 首屏 */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 36px;
  padding-block: clamp(26px, 4vw, 48px) clamp(36px, 5vw, 76px);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--sky);
}

.page-faq .faq-hero__title {
  margin: 16px 0 22px;
  font-size: clamp(40px, 6vw, 74px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.03em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  max-width: 40ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink);
  text-decoration: none;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--sky);
  border-color: var(--sky);
  color: var(--paper);
  outline: none;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: clamp(32px, 5vw, 68px);
  }
}

/* 主体双栏 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(30px, 4vw, 44px);
  padding-block: clamp(34px, 5vw, 68px) clamp(46px, 6vw, 88px);
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(36px, 4vw, 60px);
  }

  .page-faq .faq-side {
    position: sticky;
    top: 24px;
  }
}

/* 自助清单 */
.page-faq .checklist {
  counter-reset: done;
  background: var(--ice);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--saffron);
  padding: 18px 16px 16px;
}

.page-faq .checklist__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-faq .checklist__title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-faq .checklist__cap {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--stone);
}

.page-faq .checklist__track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-top: 14px;
}

.page-faq .checklist__seg {
  height: 5px;
  background: rgba(35, 29, 25, .12);
  transition: background-color .2s var(--ease);
}

.page-faq:has(#chk-scope:checked) .checklist__seg:nth-child(1),
.page-faq:has(#chk-signup:checked) .checklist__seg:nth-child(2),
.page-faq:has(#chk-device:checked) .checklist__seg:nth-child(3),
.page-faq:has(#chk-cal:checked) .checklist__seg:nth-child(4),
.page-faq:has(#chk-fee:checked) .checklist__seg:nth-child(5) {
  background: var(--saffron);
}

.page-faq .checklist__intro {
  margin: 12px 0 2px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .checklist__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-faq .checklist__item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  flex: none;
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition: background-color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .checklist__item input[type="checkbox"]:checked {
  background: var(--saffron);
  border-color: var(--saffron);
}

.page-faq .checklist__item input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(45deg);
}

.page-faq .checklist__item input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 2px;
}

.page-faq .checklist__item label {
  display: block;
  cursor: pointer;
}

.page-faq .checklist__label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .checklist__meta {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .checklist__tally {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--stone);
}

.page-faq .checklist__tally::after {
  content: counter(done) " / 5 已完成";
}

/* 问答区 */
.page-faq .faq-acc__tools {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 18px;
}

.page-faq .faq-acc__all {
  min-height: 44px;
}

.page-faq .faq-group {
  scroll-margin-top: 28px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4vw, 52px);
}

.page-faq .faq-group__band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 15px 18px;
  background: var(--cloud);
  border-left: 4px solid var(--sky);
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--saffron);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--stone);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q__trigger {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 22px;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 17px 0;
  background: none;
  border: 0;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
}

.page-faq .faq-q__trigger:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 2px;
}

.page-faq .faq-q__num {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--stone);
  transition: color .18s var(--ease);
}

.page-faq .faq-q[data-open] .faq-q__num {
  color: var(--saffron);
}

.page-faq .faq-q__text {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.7;
}

.page-faq .faq-q__trigger:hover .faq-q__text {
  color: var(--sky);
}

.page-faq .faq-q__body {
  max-width: 62ch;
  padding-left: 42px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-q__body p {
  margin: 0;
}

@media (max-width: 640px) {
  .page-faq .faq-q__body {
    padding-left: 0;
  }
}

/* 四级响应 */
.page-faq .faq-ladder {
  padding-block: clamp(38px, 5vw, 68px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--cloud);
}

.page-faq .faq-ladder__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--sky);
}

.page-faq .faq-ladder__title {
  margin: 10px 0 0;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 22ch;
}

.page-faq .ladder {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.page-faq .ladder__step {
  padding: 20px 0;
  border-bottom: 1px solid var(--ink);
}

.page-faq .ladder__num {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--saffron);
}

.page-faq .ladder__title {
  margin: 8px 0 8px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .ladder__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .ladder__when {
  display: block;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--sky);
}

@media (min-width: 768px) {
  .page-faq .faq-ladder__title {
    font-size: 40px;
  }
}

@media (min-width: 880px) {
  .page-faq .ladder {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-bottom: 1px solid var(--ink);
  }

  .page-faq .ladder__step {
    padding: 22px 20px 26px;
    border-bottom: 0;
    border-right: 1px solid var(--ink);
  }

  .page-faq .ladder__step:first-child {
    padding-left: 0;
  }

  .page-faq .ladder__step:last-child {
    border-right: 0;
    padding-right: 0;
  }
}

/* 浏览器排障 */
.page-faq .faq-browser {
  padding-block: clamp(40px, 5vw, 80px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-browser__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-browser__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--sky);
}

.page-faq .faq-browser__title {
  margin: 10px 0 14px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 26ch;
}

.page-faq .faq-browser__lead {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .steps {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0 0 0 26px;
  list-style: none;
  position: relative;
}

.page-faq .steps::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 20px;
  width: 1px;
  background: var(--line-strong);
}

.page-faq .steps__item {
  position: relative;
  padding-bottom: 26px;
}

.page-faq .steps__item:last-child {
  padding-bottom: 0;
}

.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 4px;
  width: 13px;
  height: 13px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
}

.page-faq .steps__item:last-child::before {
  background: var(--saffron);
  border-color: var(--saffron);
}

.page-faq .steps__label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--stone);
}

.page-faq .steps__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .steps__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-browser__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.page-faq .faq-browser__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-faq .faq-browser__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-faq .faq-browser__title {
    font-size: 40px;
  }
}

/* 仍然没解决 */
.page-faq .faq-contact {
  padding-block: clamp(44px, 6vw, 84px);
  background: var(--night);
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-contact__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-contact__title {
  margin: 10px 0 14px;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-contact__lead p {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cloud);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-contact__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-invert);
}

.page-faq .faq-contact__item-num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .faq-contact__item-title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-contact__item-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cloud);
}

.page-faq .faq-contact__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  padding-top: 6px;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--cloud);
}

@media (min-width: 768px) {
  .page-faq .faq-contact__title {
    font-size: 40px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-contact__cta {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .checklist__seg,
  .page-faq .checklist__item input[type="checkbox"],
  .page-faq .faq-q__num,
  .page-faq .breadcrumb a {
    transition: none;
  }
}