/* ===== 问题排查页 · 页面专属样式 ===== */
.page-faq {
  --faq-line: 1px solid var(--grid);
  --faq-line-soft: 1px solid var(--grid-soft);
  color: var(--silver);
  background: var(--ink);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: var(--faq-line);
  padding: clamp(34px, 6vw, 76px) 0 clamp(26px, 4vw, 52px);
  background-image:
    radial-gradient(circle at 88% 4%, rgba(31, 99, 216, .22), transparent 56%),
    linear-gradient(112deg, transparent 68%, rgba(201, 166, 92, .09) 68%, rgba(201, 166, 92, .09) 69.2%, transparent 69.2%),
    linear-gradient(to right, var(--grid-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-soft) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  background-position: 0 0, 0 0, 0 0, 0 0;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(46px, 9vw, 104px);
  font-weight: 200;
  line-height: .96;
  letter-spacing: -.03em;
  background: linear-gradient(178deg, var(--silver) 26%, #aab6c6 74%, var(--gold-lt) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--silver);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver-mid);
}

.page-faq .faq-stat {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border-top: var(--faq-line);
  border-left: var(--faq-line);
}

.page-faq .faq-stat > div {
  border-right: var(--faq-line);
  border-bottom: var(--faq-line);
  padding: 14px 16px 16px;
  background: linear-gradient(180deg, rgba(19, 26, 40, .9), rgba(11, 14, 19, .6));
}

.page-faq .faq-stat dt {
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--silver-mid);
}

.page-faq .faq-stat dd {
  margin: 8px 0 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-stat dd span {
  margin-left: 3px;
  font-size: 12px;
  font-weight: 400;
  color: var(--silver-mid);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, .8fr);
    gap: 60px;
    align-items: end;
  }
}

/* --- 主体两栏布局 --- */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  padding-top: clamp(30px, 5vw, 60px);
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-faq .faq-body {
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }
}

/* --- 左侧问题类型索引 --- */
.page-faq .faq-toc {
  border-top: 2px solid var(--gold);
  padding-top: 14px;
}

.page-faq .faq-toc__label {
  display: block;
  margin-bottom: 12px;
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-toc__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--silver-mid);
  text-decoration: none;
  border: var(--faq-line);
  border-left: 2px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-toc__link .num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--silver-mid);
  transition: color .25s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--silver);
  border-color: var(--blue);
}

.page-faq .faq-toc__link.is-active,
.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--gold);
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(201, 166, 92, .12), transparent 80%);
}

.page-faq .faq-toc__link.is-active .num,
.page-faq .faq-toc__link[aria-current="true"] .num {
  color: var(--gold);
}

@media (min-width: 1000px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 24px;
    padding-top: 18px;
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    display: flex;
    justify-content: flex-start;
    white-space: normal;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
    font-size: 14px;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-color: var(--blue);
  }

  .page-faq .faq-toc__link.is-active,
  .page-faq .faq-toc__link[aria-current="true"] {
    border-left-color: var(--gold);
    background: linear-gradient(90deg, rgba(201, 166, 92, .10), transparent 85%);
  }
}

/* --- 章节 --- */
.page-faq .faq-section {
  padding-top: clamp(36px, 6vw, 68px);
  scroll-margin-top: 20px;
}

.page-faq .faq-section:first-child {
  padding-top: 0;
}

.page-faq .faq-section + .faq-section {
  border-top: var(--faq-line-soft);
  margin-top: clamp(36px, 6vw, 68px);
}

.page-faq .faq-section .section__title {
  font-weight: 600;
  letter-spacing: -.01em;
}

/* --- 自检流程 --- */
.page-faq .faq-check {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: var(--faq-line);
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 4px 22px;
  border-bottom: var(--faq-line);
  transition: background-color .3s var(--ease);
}

.page-faq .faq-check__item:hover {
  background: linear-gradient(90deg, rgba(31, 99, 216, .10), transparent 72%);
}

.page-faq .faq-check__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 21px;
  font-weight: 600;
  line-height: 1;
  padding-top: 3px;
  color: var(--gold);
}

.page-faq .faq-check__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--silver);
}

.page-faq .faq-check__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver-mid);
}

/* --- 折叠问答 --- */
.page-faq .qa-list {
  margin-top: 24px;
  border-top: var(--faq-line);
}

.page-faq .qa {
  border-bottom: var(--faq-line);
  transition: background-color .3s var(--ease);
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(31, 99, 216, .10), transparent 62%);
}

.page-faq .qa__summary {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 16px 6px 17px;
  cursor: pointer;
  list-style: none;
}

.page-faq .qa__summary::-webkit-details-marker {
  display: none;
}

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

.page-faq .qa__summary::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), var(--gold-lt) 60%, transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .55s var(--ease);
}

.page-faq .qa[open] > .qa__summary::after {
  transform: scaleX(1);
}

.page-faq .qa__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gold);
  border: var(--faq-line);
  padding: 2px 6px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .qa__summary:hover .qa__no {
  border-color: var(--blue);
}

.page-faq .qa__title {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--silver);
  transition: color .25s var(--ease);
}

.page-faq .qa[open] .qa__title {
  color: var(--gold-lt);
}

.page-faq .qa__sign {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--silver-mid);
  transition: transform .3s var(--ease), opacity .3s var(--ease), background-color .25s var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-faq .qa__summary:hover .qa__sign::before,
.page-faq .qa__summary:hover .qa__sign::after {
  background: var(--pulse);
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 6px 6px 26px;
}

@media (min-width: 780px) {
  .page-faq .qa__summary {
    padding: 19px 6px 20px;
  }

  .page-faq .qa__title {
    font-size: 18px;
  }

  .page-faq .qa__body {
    padding: 8px 6px 30px 74px;
  }
}

.page-faq .qa__verdict {
  margin: 0 0 18px;
  padding: 12px 18px;
  border-left: 2px solid var(--gold);
  background: linear-gradient(90deg, rgba(201, 166, 92, .14), rgba(201, 166, 92, 0) 78%);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .qa__steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .qa__steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver-mid);
}

.page-faq .qa__steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--gold);
  border: var(--faq-line);
  padding: 0 5px;
}

/* --- 图片占位 --- */
.page-faq .figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

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

.page-faq .figure__caption {
  margin-top: 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--silver-mid);
}

/* --- 联络指引 --- */
.page-faq .faq-help {
  display: grid;
  gap: 26px;
  margin-top: 26px;
  padding: 24px 20px;
  border: var(--faq-line);
  background: linear-gradient(150deg, var(--panel) 0%, var(--panel-deep) 100%);
  position: relative;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

.page-faq .faq-help__title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-faq .faq-help__col--aside {
  padding-top: 22px;
  border-top: var(--faq-line-soft);
}

.page-faq .faq-help__col--aside p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver-mid);
}

@media (min-width: 860px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, .85fr);
    gap: 44px;
    padding: 30px 28px;
  }

  .page-faq .faq-help__col--aside {
    padding-top: 0;
    border-top: 0;
    border-left: var(--faq-line-soft);
    padding-left: 28px;
  }
}

/* --- 相关页面 --- */
.page-faq .faq-refs {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: 20px;
  border-top: var(--faq-line);
}

.page-faq .faq-refs__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--faq-line-soft);
}

.page-faq .faq-refs__list li {
  border-bottom: var(--faq-line-soft);
}

.page-faq .faq-refs__list a {
  display: block;
  padding: 13px 4px;
  font-size: 15px;
  color: var(--silver-mid);
  text-decoration: none;
  transition: color .25s var(--ease), padding-left .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-refs__list a:hover,
.page-faq .faq-refs__list a:focus-visible {
  color: var(--pulse);
  padding-left: 12px;
  background: linear-gradient(90deg, rgba(77, 163, 255, .10), transparent 70%);
}

@media (min-width: 760px) {
  .page-faq .faq-refs__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

/* --- 动效降级 --- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__summary::after,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-toc__link,
  .page-faq .faq-refs__list a,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .qa[open] > .qa__summary::after {
    transform: none;
  }
}