.page-faq {
  --faq-rail: 236px;
  --faq-block-gap: clamp(28px, 4vw, 52px);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(36px, 6vw, 76px) 0 clamp(24px, 4vw, 44px);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 140%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 46% at 16% 0%, rgba(42, 245, 176, 0.15), transparent 70%),
    radial-gradient(44% 42% at 94% 10%, rgba(196, 121, 74, 0.13), transparent 72%);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__lede h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 64px);
  line-height: 1.09;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--paper-text);
}

.page-faq .faq-hero__lede .lede {
  max-width: 48ch;
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  align-self: start;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  background: var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-stat {
  padding: 18px 16px;
  background: var(--deck);
}

.page-faq .faq-stat__v {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.1;
  color: var(--signal);
  letter-spacing: -0.01em;
}

.page-faq .faq-stat__u {
  margin-left: 4px;
  font-size: 0.5em;
  color: var(--mist);
  font-family: var(--font-body);
}

.page-faq .faq-stat__l {
  margin: 9px 0 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  padding: clamp(20px, 3.5vw, 44px) 0 clamp(36px, 6vw, 68px);
}

.page-faq .faq-rail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 48px);
}

@media (min-width: 960px) {
  .page-faq .faq-rail-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 118px;
  }
}

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

/* ---------- 分类轨道 ---------- */

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

.page-faq .faq-rail__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: var(--deck);
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--paper-text);
  border-color: var(--line);
  background: var(--slate);
}

.page-faq .faq-rail__list .mono {
  font-size: 12.5px;
  color: var(--moss);
}

@media (min-width: 960px) {
  .page-faq .faq-rail__list {
    display: grid;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list li {
    flex: none;
  }

  .page-faq .faq-rail__list a {
    display: flex;
    white-space: normal;
    border-color: transparent;
    background: transparent;
    border-radius: var(--r-pill);
  }
}

/* ---------- 分类区块 ---------- */

.page-faq .qa-block {
  scroll-margin-top: 132px;
}

.page-faq .qa-block + .qa-block,
.page-faq .qa-block + .faq-look,
.page-faq .qa-block + .quick-check,
.page-faq .quick-check + .qa-block,
.page-faq .faq-look + .quick-check,
.page-faq .faq-look + .qa-block {
  margin-top: var(--faq-block-gap);
  padding-top: var(--faq-block-gap);
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .qa-block__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 5.6vw, 60px);
  line-height: 0.86;
  color: var(--moss);
  -webkit-text-stroke: 1px var(--moss);
  letter-spacing: -0.03em;
}

.page-faq .qa-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--paper-text);
}

.page-faq .qa-block__intro {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  background: var(--deck);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa:hover {
  border-color: var(--line);
}

.page-faq .qa[open] {
  border-color: var(--line);
  background: var(--slate);
  box-shadow: inset 3px 0 0 var(--signal);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-text);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -3px;
}

.page-faq .qa__no {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.page-faq .qa__icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--signal);
  border-radius: 2px;
}

.page-faq .qa__icon::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.page-faq .qa[open] .qa__icon::after {
  opacity: 0;
  transform: translateX(-50%) scaleY(0.2);
}

.page-faq .qa__a {
  padding: 14px 18px 18px;
  border-top: 1px dashed var(--line-soft);
  margin-top: 2px;
  font-size: 14.8px;
  line-height: 1.9;
  color: rgba(236, 233, 225, 0.84);
  animation: faqDrop 0.26s ease;
}

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

.page-faq .qa__a b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--signal);
}

@keyframes faqDrop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 720px) {
  .page-faq .qa__q {
    padding: 17px 22px;
    font-size: 16px;
  }

  .page-faq .qa__a {
    padding: 16px 22px 20px;
    font-size: 15.2px;
  }
}

/* ---------- 两图横幅 ---------- */

.page-faq .faq-look {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin-top: var(--faq-block-gap);
}

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

.page-faq .media {
  margin: 0;
}

.page-faq .media__frame {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  background: linear-gradient(160deg, var(--deck) 0%, var(--slate) 55%, rgba(42, 245, 176, 0.14) 100%);
}

.page-faq .media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(42, 245, 176, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 245, 176, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.55;
}

.page-faq .media__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: 0.9;
}

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

/* ---------- 快速排查条 ---------- */

.page-faq .quick-check {
  margin-top: var(--faq-block-gap);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    repeating-linear-gradient(135deg, rgba(196, 121, 74, 0.12) 0 7px, transparent 7px 22px),
    var(--deck);
}

.page-faq .quick-check__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.2;
  color: var(--paper-text);
}

.page-faq .quick-check__sub {
  margin: 8px 0 18px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

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

.page-faq .quick-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 17px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(11, 16, 38, 0.68);
  color: var(--paper-text);
  font-size: 13.5px;
  line-height: 1.3;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-faq .quick-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(42, 245, 176, 0.16);
  flex: none;
}

.page-faq .quick-pill:hover,
.page-faq .quick-pill:focus-visible {
  background: rgba(42, 245, 176, 0.14);
  border-color: var(--signal);
  transform: translateY(-1px);
}

/* ---------- 收尾帮助入口 ---------- */

.page-faq .faq-exits {
  padding: 0 0 clamp(56px, 8vw, 104px);
}

.page-faq .faq-exits__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

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

.page-faq .faq-exit {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, var(--deck) 0%, rgba(11, 16, 38, 0.6) 100%);
}

.page-faq .faq-exit h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.22;
  color: var(--paper-text);
}

.page-faq .faq-exit p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-exit .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .qa__icon::after,
  .page-faq .quick-pill,
  .page-faq .faq-rail__list a,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .quick-pill:hover,
  .page-faq .quick-pill:focus-visible {
    transform: none;
  }
}