.page-faq {
  --faq-line: rgba(169, 180, 198, .2);
  --faq-line-strong: rgba(47, 224, 166, .42);
  --faq-card: rgba(19, 28, 51, .72);
  --faq-card-deep: rgba(10, 16, 32, .82);
  position: relative;
  min-width: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  background:
    radial-gradient(680px 420px at 94% 2%, rgba(47, 224, 166, .12), transparent 62%),
    radial-gradient(560px 400px at 0% 32%, rgba(230, 57, 70, .1), transparent 64%);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-faq .faq-toc__link:focus-visible,
.page-faq .faq-filter:focus-visible,
.page-faq .faq-qa__q:focus-visible,
.page-faq .text-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(20px, 4vw, 36px) clamp(28px, 5vw, 54px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 30px);
}

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

.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.4vw, var(--fs-72));
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.025em;
  color: var(--paper);
}

.page-faq .faq-hero__desc {
  margin: 1.15rem 0 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.6rem;
}

.page-faq .faq-meta {
  min-width: 0;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(19, 28, 51, .92), rgba(10, 16, 32, .78));
}

.page-faq .faq-meta__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-meta__list {
  list-style: none;
  margin: .85rem 0 0;
  padding: 0;
  display: grid;
}

.page-faq .faq-meta__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .7rem;
  border-bottom: 1px dashed rgba(169, 180, 198, .16);
}

.page-faq .faq-meta__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-meta__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--mist);
}

.page-faq .faq-meta__v {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  font-weight: 600;
  color: var(--gold);
}

/* ---------- 目录索引 ---------- */

.page-faq .faq-toc {
  margin-top: clamp(24px, 4vw, 40px);
  padding-block: 12px;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 44px;
  padding: .35rem .95rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-pill);
  font-size: var(--fs-14);
  color: var(--paper);
  text-decoration: none;
  transition: border-color .22s var(--ease), color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--aurora);
}

.page-faq .faq-toc__link:hover {
  border-color: var(--faq-line-strong);
  background-color: rgba(47, 224, 166, .08);
  color: var(--aurora);
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-section {
  position: relative;
  padding-block: clamp(34px, 6vw, 74px);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}

.page-faq .faq-section + .faq-section::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--maple), var(--gold), var(--aurora), transparent);
  opacity: .55;
}

.page-faq .faq-section__head {
  max-width: 62ch;
}

.page-faq .faq-step {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .24em;
  color: var(--aurora);
}

.page-faq .faq-step::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--maple), var(--aurora));
}

.page-faq .faq-section h2 {
  margin: .65rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, var(--fs-32));
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.018em;
  color: var(--paper);
}

.page-faq .faq-section__intro {
  margin: .85rem 0 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  color: var(--mist);
}

.page-faq .faq-figure {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
}

.page-faq .faq-figure img {
  width: 100%;
  border: 1px solid rgba(89, 199, 242, .24);
  border-radius: var(--r-md);
  background-color: var(--ink-2);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: .7rem;
  font-size: var(--fs-14);
  color: var(--mist);
}

/* ---------- 01 三步走 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-steps__item {
  position: relative;
  min-width: 0;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--faq-card), var(--faq-card-deep));
}

.page-faq .faq-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-faq .faq-steps__item h3 {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-steps__item p {
  margin: .6rem 0 0;
  font-size: var(--fs-16);
  color: var(--mist);
}

.page-faq .faq-steps__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .05em;
  color: var(--aurora);
}

/* ---------- 02 入口对照 ---------- */

.page-faq .faq-compare {
  display: grid;
  gap: clamp(16px, 3vw, 26px);
  margin-top: clamp(24px, 3.6vw, 36px);
}

.page-faq .faq-compare__col {
  min-width: 0;
  padding: clamp(18px, 2.8vw, 28px);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: rgba(19, 28, 51, .5);
}

.page-faq .faq-compare__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--gold);
}

.page-faq .faq-compare__col h3 {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-compare__col p {
  margin: .6rem 0 0;
  font-size: var(--fs-16);
  color: var(--mist);
}

.page-faq .faq-wire {
  position: relative;
  margin: 1.1rem auto .7rem;
  border: 1px solid rgba(169, 180, 198, .3);
  background:
    repeating-linear-gradient(180deg, rgba(169, 180, 198, .08) 0 1px, transparent 1px 12px),
    rgba(10, 16, 32, .7);
}

.page-faq .faq-wire--phone {
  width: 112px;
  height: 186px;
  border-radius: 16px;
}

.page-faq .faq-wire--desk {
  width: 100%;
  max-width: 240px;
  height: 146px;
  border-radius: 10px;
}

.page-faq .faq-wire__bar {
  position: absolute;
  height: 8px;
  border-radius: var(--r-pill);
  background: var(--aurora);
  box-shadow: 0 0 12px rgba(47, 224, 166, .55);
}

.page-faq .faq-wire--phone .faq-wire__bar {
  left: 12px;
  right: 12px;
  bottom: 10px;
}

.page-faq .faq-wire--desk .faq-wire__bar {
  left: 14px;
  right: 14px;
  top: 10px;
}

.page-faq .faq-wire__block {
  position: absolute;
  background: rgba(230, 57, 70, .32);
  border-radius: 4px;
}

.page-faq .faq-wire--phone .faq-wire__block {
  left: 14px;
  right: 14px;
  top: 16px;
  height: 112px;
}

.page-faq .faq-wire--desk .faq-wire__block {
  left: 14px;
  right: 14px;
  top: 30px;
  bottom: 14px;
}

.page-faq .faq-wire__note {
  margin: 0 0 .2rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--aurora);
}

/* ---------- 03 资料包用法 ---------- */

.page-faq .faq-ways {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3.6vw, 36px);
}

.page-faq .faq-way {
  min-width: 0;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: linear-gradient(165deg, rgba(19, 28, 51, .86), rgba(10, 16, 32, .72));
}

.page-faq .faq-way--a { border-top: 3px solid var(--maple); }
.page-faq .faq-way--b { border-top: 3px solid var(--aurora); }
.page-faq .faq-way--c { border-top: 3px solid var(--gold); }

.page-faq .faq-way__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  color: var(--mist);
}

.page-faq .faq-way h3 {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-faq .faq-way__steps {
  list-style: none;
  counter-reset: way;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-way__steps li {
  position: relative;
  counter-increment: way;
  padding-left: 2.15rem;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-faq .faq-way__steps li::before {
  content: counter(way);
  position: absolute;
  left: 0;
  top: .1em;
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  background: var(--aurora);
}

.page-faq .faq-way__fit {
  margin: 1.05rem 0 0;
  padding-top: .85rem;
  border-top: 1px dashed rgba(169, 180, 198, .2);
  font-size: var(--fs-14);
  color: var(--paper);
}

.page-faq .text-link {
  color: var(--aurora);
  text-decoration: underline;
  text-decoration-color: rgba(47, 224, 166, .45);
  text-underline-offset: 3px;
}

.page-faq .text-link:hover {
  text-decoration-color: var(--aurora);
}

/* ---------- 04 版本号 ---------- */

.page-faq .faq-ver {
  display: grid;
  gap: 20px;
  margin-top: clamp(24px, 3.6vw, 36px);
}

.page-faq .faq-ver__plate {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid rgba(242, 179, 75, .34);
  border-radius: var(--r-lg);
  background:
    radial-gradient(280px 160px at 10% 0%, rgba(242, 179, 75, .18), transparent 72%),
    rgba(19, 28, 51, .62);
}

.page-faq .faq-ver__code {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 8vw, var(--fs-48));
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-ver__date {
  flex: 1 1 100%;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-ver__parts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-ver__parts li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-ver__key {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  white-space: nowrap;
  padding: .2rem .6rem;
  border: 1px solid rgba(47, 224, 166, .32);
  border-radius: var(--r-sm);
  color: var(--aurora);
}

.page-faq .faq-ver__parts p {
  margin: 0;
  font-size: var(--fs-16);
  color: var(--mist);
}

/* ---------- 05 速查问答 ---------- */

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-faq .faq-filter {
  appearance: none;
  cursor: pointer;
  min-height: 44px;
  padding: .5rem 1.15rem;
  border: 1px solid rgba(169, 180, 198, .3);
  border-radius: var(--r-pill);
  background: rgba(19, 28, 51, .6);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-14);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-filter:hover {
  color: var(--paper);
  border-color: var(--faq-line-strong);
}

.page-faq .faq-filter[aria-pressed="true"] {
  color: var(--ink);
  background: var(--aurora);
  border-color: var(--aurora);
  font-weight: 700;
}

.page-faq .faq-qa {
  display: grid;
  gap: 10px;
  margin-top: clamp(18px, 2.6vw, 24px);
}

.page-faq .faq-qa__item {
  position: relative;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: rgba(19, 28, 51, .5);
  overflow: hidden;
}

.page-faq .faq-qa__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--maple);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .28s var(--ease);
}

.page-faq .faq-qa__item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--paper);
}

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

.page-faq .faq-qa__tag {
  flex: none;
  padding: .2rem .55rem;
  border: 1px solid rgba(169, 180, 198, .3);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-qa__item[open] .faq-qa__tag {
  color: var(--aurora);
  border-color: rgba(47, 224, 166, .45);
}

.page-faq .faq-qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-qa__mark {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
}

.page-faq .faq-qa__mark::before,
.page-faq .faq-qa__mark::after {
  content: "";
  position: absolute;
  border-radius: 2px;
  background: var(--aurora);
  transition: transform .28s var(--ease);
}

.page-faq .faq-qa__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .faq-qa__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .faq-qa__item[open] .faq-qa__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-qa__a {
  padding: 0 16px 16px;
}

.page-faq .faq-qa__a p {
  margin: 0;
  font-size: var(--fs-16);
  color: var(--mist);
}

/* ---------- 06 继续求助 ---------- */

.page-faq .faq-closing {
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgba(47, 224, 166, .26);
  border-radius: var(--r-lg);
  background:
    radial-gradient(420px 240px at 90% 0%, rgba(47, 224, 166, .14), transparent 72%),
    linear-gradient(150deg, rgba(19, 28, 51, .9), rgba(10, 16, 32, .78));
}

.page-faq .faq-closing h2 {
  margin: .65rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, var(--fs-32));
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -.018em;
  color: var(--paper);
}

.page-faq .faq-closing__lead {
  margin: .9rem 0 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  color: var(--mist);
}

.page-faq .faq-closing__paths {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-closing__paths li {
  display: grid;
  gap: .4rem;
  min-width: 0;
}

.page-faq .faq-closing__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--gold);
}

.page-faq .faq-closing__v {
  margin: 0;
  font-size: var(--fs-16);
  color: var(--mist);
}

.page-faq .faq-closing__note {
  margin: 1.8rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px dashed rgba(169, 180, 198, .2);
  font-size: var(--fs-14);
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-closing__paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: clamp(34px, 5vw, 68px);
    align-items: start;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-steps__item::after {
    content: "";
    position: absolute;
    top: 32px;
    left: 100%;
    width: 20px;
    height: 1px;
    background: linear-gradient(90deg, var(--aurora), rgba(47, 224, 166, 0));
  }

  .page-faq .faq-steps__item:last-child::after {
    display: none;
  }

  .page-faq .faq-ways {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-ver {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-filter,
  .page-faq .faq-qa__item::before,
  .page-faq .faq-qa__tag,
  .page-faq .faq-qa__mark::before,
  .page-faq .faq-qa__mark::after {
    transition: none;
  }
}