.page-faq {
  --faq-rail: 294px;
  background: var(--ink);
  color: var(--cool);
  padding: 0 0 clamp(48px, 8vw, 96px);
}

.page-faq .bs-crumb {
  padding-top: 20px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  margin-top: 14px;
  padding: clamp(20px, 3.5vw, 40px) 0 clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: clamp(60px, 14vw, 180px);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--lime));
}
.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  max-width: 22ch;
  font-size: clamp(32px, 6.2vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--cool);
}
.page-faq .faq-hero .bs-lede {
  max-width: 64ch;
  color: var(--cool);
  font-size: clamp(15px, 1.8vw, 17px);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}
.page-faq .faq-hero__meta .num {
  font-size: 20px;
  color: var(--orange);
  letter-spacing: 0.02em;
}

/* 左右主结构 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(24px, 4vw, 42px);
}
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
}

/* 左栏 */
.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-width: 0;
}
@media (min-width: 960px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 22px;
  }
}

.page-faq .faq-search {
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: 14px 16px 16px;
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.page-faq .faq-search label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
}
.page-faq .faq-search input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--cool);
  background: rgba(7, 31, 26, 0.72);
  border: 1px solid var(--line);
  border-radius: 2px;
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-search input::placeholder {
  color: var(--muted);
}
.page-faq .faq-search input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-search .bs-note {
  margin: 10px 0 0;
}

.page-faq .faq-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-toc;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-toc li {
  border-top: 1px solid var(--line);
  counter-increment: faq-toc;
}
.page-faq .faq-toc a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 10px 11px 16px;
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .faq-toc a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  bottom: 7px;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 0.22s ease;
}
.page-faq .faq-toc a::after {
  content: counter(faq-toc, decimal-leading-zero);
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--line-strong);
}
.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--cool);
}
.page-faq .faq-toc a:hover::before,
.page-faq .faq-toc a:focus-visible::before {
  transform: scaleY(1);
}
.page-faq .faq-toc a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-rail__note .bs-kicker--dim {
  margin: 0 0 10px;
  color: var(--muted);
}
.page-faq .faq-rail__links {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-rail__links li + li {
  margin-top: 8px;
}
.page-faq .faq-rail__links a {
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 2px;
}
.page-faq .faq-rail__links a:hover,
.page-faq .faq-rail__links a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* 右栏 */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 32px);
}
.page-faq .faq-chips .bs-chip {
  text-decoration: none;
}

.page-faq .faq-section {
  scroll-margin-top: 24px;
  border-top: 1px solid var(--line);
  padding-top: clamp(26px, 3.5vw, 42px);
}
.page-faq .faq-section .section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 20px;
}
.page-faq .faq-section .section__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.15;
  color: var(--cool);
}
.page-faq .faq-section .section__head .bs-note {
  margin: 0;
  margin-left: auto;
}

.page-faq .faq-figure {
  margin: 0 0 22px;
}
.page-faq .faq-figure .bs-note {
  margin-top: 10px;
}
.page-faq .faq-figure--flush {
  margin: 0;
}

/* 步骤图 */
.page-faq .faq-duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 22px;
}
@media (min-width: 780px) {
  .page-faq .faq-duo {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }
}
.page-faq .faq-flowbox {
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: 18px 16px 10px;
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.page-faq .faq-flow {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-flow__axis {
  stroke: var(--line-strong);
  stroke-width: 1;
  stroke-dasharray: 6 8;
}
.page-faq .faq-flow__ring {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
}
.page-faq .faq-flow__n {
  font-family: var(--font-mono);
  font-size: 16px;
  fill: var(--lime);
}
.page-faq .faq-flow__t {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  fill: var(--cool);
}
.page-faq .faq-flow__s {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: var(--muted);
}

/* 折叠问答 */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .faq-item {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lime);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.24s ease;
}
.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--cool);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::marker {
  content: "";
}
.page-faq .faq-item summary:hover {
  color: var(--cyan);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  margin-left: auto;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
  transition: transform 0.24s ease;
}
.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(45deg);
}
.page-faq .faq-item__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
}
.page-faq .faq-item__body p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cool);
}
.page-faq .faq-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 2px;
}
.page-faq .faq-more:hover,
.page-faq .faq-more:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* 小表 */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  background: rgba(7, 31, 26, 0.45);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.page-faq .faq-table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 15px;
}
.page-faq .faq-table caption {
  text-align: left;
  padding: 14px 16px 10px;
  color: var(--muted);
}
.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  vertical-align: top;
}
.page-faq .faq-table thead th {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  text-transform: uppercase;
  border-top: none;
  background: rgba(15, 58, 48, 0.75);
}
.page-faq .faq-table tbody th {
  font-weight: 500;
  color: var(--cool);
}
.page-faq .faq-table tbody td {
  font-family: var(--font-mono);
  color: var(--cyan);
}
.page-faq .faq-table tbody tr:hover th {
  box-shadow: inset 3px 0 0 var(--lime);
}

/* 求助区 */
.page-faq .faq-section--help {
  border-top: 1px solid var(--line);
}
.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .page-faq .faq-help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.page-faq .faq-help__card {
  padding: 20px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
}
.page-faq .faq-help__card--mail {
  border-left-color: var(--orange);
}
.page-faq .faq-help__card .bs-kicker {
  margin: 0 0 10px;
  color: var(--muted);
}
.page-faq .faq-help__value {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.3vw, 21px);
  color: var(--cyan);
  word-break: break-all;
}
.page-faq .faq-help__card--mail .faq-help__value {
  color: var(--orange);
}
.page-faq .faq-help__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cool);
}
.page-faq .faq-help__foot {
  margin: 18px 0 0;
  font-size: 15px;
  color: var(--muted);
}
.page-faq .faq-help__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
}
.page-faq .faq-help__foot a:hover,
.page-faq .faq-help__foot a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__arrow,
  .page-faq .faq-item::before,
  .page-faq .faq-toc a,
  .page-faq .faq-toc a::before {
    transition: none;
  }
}
</main>