.page-faq {
  --faq-tint: rgba(47, 224, 200, 0.08);
  --faq-warn-tint: rgba(255, 106, 43, 0.14);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(40px, 6.4vw, 88px) 0 clamp(28px, 4.4vw, 52px);
  overflow: hidden;
  background-color: var(--ink-950);
  background-image:
    radial-gradient(680px 320px at 12% -10%, var(--faq-tint), transparent 70%),
    repeating-linear-gradient(112deg, transparent 0 42px, var(--line-soft) 42px 43px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(220px, 38%);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 18px;
  max-width: 20ch;
  font-family: var(--font-sans);
  font-size: clamp(29px, 5.6vw, 54px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--fog);
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r-sm);
  background: rgba(18, 28, 59, 0.6);
  font-size: 14px;
  color: var(--fog);
}

.page-faq .faq-hero__facts .mono {
  color: var(--cyan);
  font-size: 15px;
  font-weight: 700;
}

@media (min-width: 720px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-hero__facts li {
    flex-direction: column;
    gap: 4px;
  }
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(48px, 6vw, 96px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 左栏索引 ---------- */
.page-faq .faq-index {
  padding: 18px 0 0;
  border-top: 2px solid var(--line);
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
  }
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 1000px) {
  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid var(--line);
  color: var(--fog);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(47, 224, 200, 0.07);
  color: var(--paper);
}

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

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--yellow);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 104px;
  padding-bottom: clamp(30px, 4vw, 52px);
  margin-bottom: clamp(30px, 4vw, 52px);
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.page-faq .faq-group__head .h2 {
  margin: 0;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-group__head .meta {
  margin: 0;
  max-width: 52ch;
  color: var(--fog);
  font-size: 14.5px;
  line-height: 1.7;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-900);
  box-shadow: 0 1px 0 rgba(242, 247, 255, 0.03), 0 8px 22px rgba(5, 7, 15, 0.35);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(47, 224, 200, 0.5);
  transform: translateY(-2px);
}

.page-faq .qa[open] {
  background: var(--ink-800);
  border-color: var(--line);
}

.page-faq .qa__q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__q::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  background: var(--line);
  transform: rotate(45deg);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__q::before {
  background: var(--cyan);
}

.page-faq .qa__q::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin: 8px 0 0 auto;
  border-right: 2px solid var(--fog);
  border-bottom: 2px solid var(--fog);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  border-color: var(--cyan);
  transform: rotate(-135deg);
}

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

.page-faq .qa__a {
  margin: 0 18px 18px 38px;
  padding: 0 0 2px 14px;
  border-left: 1px solid var(--line);
}

.page-faq .qa[open] .qa__a {
  border-left-color: var(--cyan);
}

.page-faq .qa__p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--fog);
}

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

/* ---------- 导出失败处理路径带 ---------- */
.page-faq .flow-band {
  margin: 0 0 20px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid rgba(255, 106, 43, 0.45);
  border-radius: var(--r-lg);
  background:
    linear-gradient(124deg, var(--faq-warn-tint), rgba(255, 106, 43, 0.03) 68%),
    var(--ink-900);
}

.page-faq .flow-band__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .flow-band__steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 700px) {
  .page-faq .flow-band__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

.page-faq .flow-step {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 14px 14px 14px 16px;
  border-left: 2px solid var(--orange);
  background: rgba(5, 7, 15, 0.55);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .flow-step:hover,
.page-faq .flow-step:focus-within {
  background: rgba(255, 106, 43, 0.1);
  transform: translateY(-2px);
}

.page-faq .flow-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .flow-step__name {
  font-size: 15.5px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .flow-step__desc {
  font-size: 14px;
  line-height: 1.68;
  color: var(--fog);
}

.page-faq .flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -18px;
  width: 9px;
  height: 9px;
  border-top: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
  transform: translateY(-50%) rotate(45deg);
  opacity: 0.8;
}

@media (max-width: 699px) {
  .page-faq .flow-step:not(:last-child)::after {
    display: none;
  }
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-800);
}

.page-faq .faq-figure--tall img {
  max-height: 520px;
}

.page-faq .faq-figure--wide img {
  max-height: 460px;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: rgba(18, 28, 59, 0.7);
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--fog);
}

/* ---------- 收尾求助区 ---------- */
.page-faq .faq-group--help .help-panel {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(560px 240px at 6% -20%, rgba(154, 107, 255, 0.14), transparent 70%),
    var(--ink-800);
}

.page-faq .help-panel__lead {
  max-width: 58ch;
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .help-panel__list {
  display: grid;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .help-panel__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .help-panel__label {
  flex: 0 0 84px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.page-faq .help-panel__value {
  font-size: 15px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .help-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .help-panel__actions .copy-status {
  font-size: 13.5px;
  color: var(--cyan);
}

.page-faq .faq-cross {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

@media (min-width: 700px) {
  .page-faq .faq-cross {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-cross__item {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-900);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-cross__item:hover,
.page-faq .faq-cross__item:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-800);
  transform: translateY(-3px);
}

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

.page-faq .faq-cross__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--yellow);
}

.page-faq .faq-cross__text {
  font-size: 15px;
  line-height: 1.68;
  color: var(--paper);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px) {
  .page-faq .qa__a {
    margin: 0 14px 16px 14px;
    padding-left: 12px;
  }

  .page-faq .qa__q {
    padding: 15px 14px;
    font-size: 15.5px;
  }

  .page-faq .help-panel__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q::before,
  .page-faq .qa__q::after,
  .page-faq .flow-step,
  .page-faq .faq-cross__item,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .qa:hover,
  .page-faq .flow-step:hover,
  .page-faq .faq-cross__item:hover {
    transform: none;
  }
}