.page-faq {
  --faq-index-w: 236px;
  --faq-sticky: 96px;
  background: var(--snow);
  padding-bottom: 40px;
}

.page-faq a {
  color: var(--blue-sky);
}

.page-faq a:hover,
.page-faq a:focus-visible {
  color: var(--flag-red);
}

/* 面包屑 */
.page-faq .faq-crumb {
  padding-top: 14px;
  padding-bottom: 6px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 12px 0 36px;
  background:
    linear-gradient(180deg, rgba(169, 214, 242, 0.28) 0, rgba(169, 214, 242, 0) 72%);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 16px;
  font-size: clamp(28px, 5.4vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--blue-deep);
}

.page-faq .faq-hero__text {
  max-width: 52ch;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 分布看板（本屏唯一填充色块） */
.page-faq .faq-board {
  position: relative;
  padding: 20px;
  background-color: var(--blue-deep);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 24px 24px;
  border-radius: var(--radius);
  color: var(--snow);
}

.page-faq .faq-board__cap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--blue-pale);
}

.page-faq .faq-board__cap strong {
  font-family: var(--font-num);
  font-size: 34px;
  letter-spacing: 0;
  line-height: 1;
  color: var(--white);
}

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

.page-faq .faq-board__list li {
  display: grid;
  grid-template-columns: 4.6em 1fr 1.6em;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.page-faq .faq-board__name {
  color: var(--white);
}

.page-faq .faq-board__bar {
  display: block;
  height: 6px;
  background: rgba(255, 255, 255, 0.18);
}

.page-faq .faq-board__bar i {
  display: block;
  height: 100%;
  background: var(--flag-yellow);
}

.page-faq .faq-board__list li:nth-child(1) .faq-board__bar i { width: 24%; }
.page-faq .faq-board__list li:nth-child(2) .faq-board__bar i { width: 21%; }
.page-faq .faq-board__list li:nth-child(3) .faq-board__bar i { width: 21%; }
.page-faq .faq-board__list li:nth-child(4) .faq-board__bar i { width: 18%; }
.page-faq .faq-board__list li:nth-child(5) .faq-board__bar i { width: 16%; }

.page-faq .faq-board__n {
  font-family: var(--font-num);
  font-size: 15px;
  text-align: right;
  color: var(--white);
}

.page-faq .faq-board__foot {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 12px;
  line-height: 1.7;
  color: var(--blue-pale);
}

/* 现象索引 */
.page-faq .faq-sec {
  padding: 32px 0 8px;
}

.page-faq .symptom-grid {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .symptom {
  display: grid;
  gap: 8px;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .symptom .tag {
  justify-self: start;
}

.page-faq .symptom__title {
  font-size: 15px;
  line-height: 1.65;
  font-weight: 600;
  color: var(--blue-deep);
}

.page-faq .symptom__n {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-faq .symptom:hover,
.page-faq .symptom:focus-visible {
  border-color: var(--blue-pale);
  box-shadow: inset 2px 0 0 var(--flag-red);
}

/* 两栏：索引 + 问答 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 32px 0 56px;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 14px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--rock);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .faq-index__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--flag-red);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--flag-red);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__n {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--rock);
}

.page-faq .faq-index__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

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

/* 分组 */
.page-faq .faq-group {
  padding-top: 24px;
  margin-bottom: 36px;
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 6px 12px;
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--flag-red);
  border: 1px solid var(--flag-red);
  padding: 4px 6px;
}

.page-faq .faq-group__title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--blue-deep);
}

.page-faq .faq-group__lede {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

/* 编号步骤 */
.page-faq .step-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .step__num {
  display: grid;
  place-items: center;
  height: 30px;
  background: var(--blue-pale);
  color: var(--blue-deep);
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
}

.page-faq .step:first-child .step__num {
  background: var(--flag-red);
  color: var(--white);
}

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

.page-faq .step__text strong {
  color: var(--blue-deep);
}

/* 折叠问答 */
.page-faq .qa-list {
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--blue-deep);
}

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

.page-faq .qa summary::before {
  content: "+";
  flex: 0 0 20px;
  height: 20px;
  margin-top: 1px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1;
  color: var(--flag-red);
}

.page-faq .qa[open] summary::before {
  content: "−";
  border-color: var(--flag-red);
}

.page-faq .qa summary:hover,
.page-faq .qa summary:focus-visible {
  color: var(--flag-red);
}

.page-faq .qa__body {
  padding: 0 0 16px 32px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

.page-faq .qa__body p:last-child {
  margin-bottom: 0;
}

/* 图示 */
.page-faq .faq-figure {
  margin: 0 0 22px;
}

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

.page-faq .faq-figure .figure__cap {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

/* 文件类型卡片 */
.page-faq .file-types {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .file-type {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .file-type:hover {
  border-color: var(--blue-pale);
  box-shadow: inset 2px 0 0 var(--flag-red);
}

.page-faq .file-type__icon {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 12px;
  border: 1px solid var(--blue-deep);
  border-radius: var(--radius);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue-deep);
}

.page-faq .file-type:nth-child(2) .file-type__icon {
  border-color: var(--flag-yellow);
  color: var(--flag-yellow);
}

.page-faq .file-type:nth-child(3) .file-type__icon {
  border-color: var(--flag-green);
  color: var(--flag-green);
}

.page-faq .file-type__title {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--blue-deep);
}

.page-faq .file-type__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* 浏览器表格 */
.page-faq .table-scroll {
  margin-bottom: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--white);
}

.page-faq .browser-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .browser-table caption {
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--rock);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .browser-table th,
.page-faq .browser-table td {
  padding: 10px 14px;
  text-align: left;
  line-height: 1.65;
}

.page-faq .browser-table th {
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--blue-deep);
  border-bottom: 1px solid var(--line);
}

.page-faq .browser-table td:first-child {
  font-weight: 600;
  color: var(--blue-deep);
}

.page-faq .browser-table td:nth-child(2) {
  font-family: var(--font-num);
  white-space: nowrap;
  color: var(--ink);
}

.page-faq .browser-table td:nth-child(3) {
  color: var(--rock);
}

.page-faq .browser-table tbody tr:nth-child(even) {
  background: rgba(169, 214, 242, 0.22);
}

/* 要点列表 */
.page-faq .keypoints {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .keypoints li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .keypoints li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  background: var(--flag-yellow);
}

/* 收尾求助 */
.page-faq .faq-help {
  padding-top: 8px;
}

.page-faq .faq-help__inner {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-help__strip {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.page-faq .faq-help__strip i {
  display: block;
  width: 22px;
  height: 4px;
}

.page-faq .faq-help__strip i:nth-child(1) { background: var(--flag-red); }
.page-faq .faq-help__strip i:nth-child(2) { background: var(--flag-yellow); }
.page-faq .faq-help__strip i:nth-child(3) { background: var(--flag-green); }
.page-faq .faq-help__strip i:nth-child(4) { background: var(--blue-sky); }
.page-faq .faq-help__strip i:nth-child(5) { background: var(--blue-deep); }

.page-faq .faq-help__title {
  margin: 0 0 8px;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.35;
  color: var(--blue-deep);
}

.page-faq .faq-help__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .step-list--compact {
  margin-bottom: 18px;
}

.page-faq .step-list--compact .step__num {
  background: var(--white);
  border: 1px solid var(--blue-deep);
  color: var(--blue-deep);
}

.page-faq .faq-help__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 桌面端 */
@media (min-width: 760px) {
  .page-faq .symptom-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .file-types {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero {
    padding: 20px 0 44px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 36px;
  }

  .page-faq .faq-hero__lead {
    align-self: center;
  }

  .page-faq .faq-board {
    padding: 24px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }

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

  .page-faq .faq-index__link {
    display: grid;
    grid-template-columns: 26px 1fr auto;
    gap: 6px;
    padding: 11px 0 11px 12px;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
    white-space: normal;
  }

  .page-faq .faq-index__list li:first-child .faq-index__link {
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-index__name {
    font-size: 15px;
  }

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

@media (min-width: 1100px) {
  .page-faq .faq-hero__grid {
    gap: 48px;
  }

  .page-faq .faq-help__inner {
    padding: 28px 28px 30px;
  }

  .page-faq .step-list {
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .symptom,
  .page-faq .file-type,
  .page-faq .faq-index__link,
  .page-faq .faq-index__link::before {
    transition: none;
  }
}