.page-faq {
  --faq-col: 8rem;
  --faq-line: rgba(143, 163, 191, .26);
  --faq-line-soft: rgba(143, 163, 191, .16);
  display: block;
  color: var(--paper);
  background-color: var(--deep);
  background-image:
    radial-gradient(60rem 30rem at 84% -10%, rgba(53, 224, 138, .10), transparent 70%),
    radial-gradient(48rem 26rem at -8% 16%, rgba(46, 147, 168, .16), transparent 68%);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .crumb {
  padding-top: clamp(1.25rem, 3vw, 2rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(1.75rem, 4vw, 3.25rem);
  border-bottom: 2px solid var(--faq-line-soft);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: 1fr;
}

.page-faq .faq-hero__lede h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5.2vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: .015em;
  margin: .85rem 0 1rem;
  color: var(--paper);
}

.page-faq .faq-hero__sub {
  font-family: var(--font-body);
  font-size: clamp(.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
  max-width: 52ch;
  margin: 0 0 .75rem;
  color: var(--paper);
}

.page-faq .faq-hero__note {
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.8;
  max-width: 52ch;
  margin: 0;
  color: var(--mist);
  padding-left: .85rem;
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-steps {
  border: 2px solid var(--ink);
  background: var(--night);
  box-shadow: var(--paper-shadow);
  padding: 1.25rem 1.25rem 1.1rem;
  transform: rotate(-1.2deg);
}

.page-faq .faq-steps__title {
  font-family: var(--font-label);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0 0 .9rem;
}

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

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: .75rem;
  align-items: start;
}

.page-faq .faq-steps__num {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--red);
  border-left: 4px solid var(--green);
  padding-left: .5rem;
}

.page-faq .faq-steps__text {
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 检索区 ---------- */
.page-faq .faq-lookup {
  padding-block: clamp(1.75rem, 4vw, 2.75rem);
  background: linear-gradient(180deg, rgba(19, 41, 75, .92), rgba(19, 41, 75, .34));
  border-bottom: 2px solid var(--faq-line-soft);
}

.page-faq .faq-lookup__note {
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.8;
  color: var(--mist);
  margin: .6rem 0 0;
  max-width: 58ch;
}

.page-faq .faq-lookup__bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  align-items: center;
  margin-top: 1.1rem;
}

.page-faq .faq-lookup .term-search {
  width: 100%;
}

.page-faq .faq-lookup .term-search__input {
  width: 100%;
}

.page-faq .faq-lookup__count {
  font-family: var(--font-body);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--green);
  margin: 0;
  white-space: nowrap;
}

.page-faq .faq-cats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.1rem 0 0;
  padding: 0;
}

.page-faq .faq-cat {
  display: inline-block;
  font-family: var(--font-label);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: .42rem .8rem;
  border: 2px solid var(--line-strong);
  background: var(--deep);
  color: var(--mist);
  text-decoration: none;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.page-faq .faq-cat::before {
  content: "$ ";
  color: var(--green);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink);
}

.page-faq .faq-cat:hover::before,
.page-faq .faq-cat:focus-visible::before {
  color: var(--ink);
}

.page-faq .faq-empty {
  margin: 1.1rem 0 0;
  padding: .85rem 1rem;
  border: 2px dashed var(--line-strong);
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.8;
  color: var(--amber);
}

/* ---------- 释义区 ---------- */
.page-faq .faq-codes .section__head {
  max-width: 62ch;
}

.page-faq .faq-figure {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--paper);
  margin: 0 0 .4rem;
  padding-bottom: .55rem;
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .faq-group__idx {
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--green);
  border: 2px solid var(--line-strong);
  padding: .1rem .4rem;
  text-transform: none;
}

.page-faq .faq-group__note {
  font-family: var(--font-body);
  font-size: .8125rem;
  line-height: 1.75;
  color: var(--mist);
  margin: 0 0 .9rem;
}

.page-faq .code-row {
  border: 2px solid var(--faq-line-soft);
  background: var(--night);
  transition: border-color .18s ease, background-color .18s ease;
}

.page-faq .code-row + .code-row {
  margin-top: .7rem;
}

.page-faq .code-row[open] {
  border-color: var(--green);
  background: linear-gradient(180deg, rgba(53, 224, 138, .06), transparent 40%), var(--night);
}

.page-faq .code-row__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: .45rem;
  padding: .9rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .code-row__head:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: -3px;
}

.page-faq .code-row__num {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: .03em;
  color: var(--red);
  border-left: 4px solid var(--green);
  padding-left: .55rem;
}

.page-faq .code-row__main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
}

.page-faq .code-row__title {
  font-family: var(--font-body);
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .code-row__body {
  display: grid;
  gap: .5rem;
  padding: 0 1rem 1.1rem;
  border-top: 1px solid var(--faq-line-soft);
  margin: 0 1rem;
  padding-left: 0;
  padding-right: 0;
  padding-top: .85rem;
}

.page-faq .code-row__line {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: .5rem .75rem;
  margin: 0;
  font-family: var(--font-body);
  font-size: .8438rem;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .code-row__key {
  color: var(--green);
  letter-spacing: .04em;
}

/* ---------- 显示异常 ---------- */
.page-faq .faq-fixes__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-figure--square {
  margin: 0;
}

.page-faq .fix-card {
  border: 2px solid var(--faq-line-soft);
  border-left: 5px solid var(--amber);
  background: var(--night);
  padding: 1rem 1.15rem 1.1rem;
}

.page-faq .fix-card + .fix-card {
  margin-top: .85rem;
}

.page-faq .fix-card__title {
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 .45rem;
  color: var(--mint);
}

.page-faq .fix-card__body {
  font-family: var(--font-body);
  font-size: .8438rem;
  line-height: 1.85;
  margin: 0;
  color: var(--paper);
}

/* ---------- 检索与收藏问答 ---------- */
.page-faq .qa-list {
  list-style: none;
  display: grid;
  gap: 1.15rem;
  grid-template-columns: 1fr;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
}

.page-faq .qa-item {
  padding-left: 1rem;
  border-left: 3px solid var(--cyan);
}

.page-faq .qa-item__q {
  font-family: var(--font-body);
  font-size: .9063rem;
  font-weight: 700;
  line-height: 1.65;
  color: var(--mint);
  margin: 0 0 .3rem;
}

.page-faq .qa-item__a {
  font-family: var(--font-body);
  font-size: .8438rem;
  line-height: 1.85;
  color: var(--paper);
  margin: 0;
}

/* ---------- 自检清单 ---------- */
.page-faq .faq-precheck {
  background: linear-gradient(180deg, rgba(19, 41, 75, .55), transparent);
  border-top: 2px solid var(--faq-line-soft);
  border-bottom: 2px solid var(--faq-line-soft);
}

.page-faq .checklist {
  list-style: none;
  display: grid;
  gap: .7rem;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
}

.page-faq .checklist__label {
  display: grid;
  grid-template-columns: 1.4rem minmax(0, 1fr);
  gap: .85rem;
  align-items: start;
  padding: .85rem 1rem;
  border: 2px solid var(--faq-line-soft);
  background: var(--night);
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.8;
  color: var(--paper);
  cursor: pointer;
  transition: border-color .18s ease;
}

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

.page-faq .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  margin: .25rem 0 0;
  border: 2px solid var(--line-strong);
  background: var(--deep);
  display: grid;
  place-content: center;
  cursor: pointer;
  flex: none;
}

.page-faq .checklist__box::after {
  content: "";
  width: .6rem;
  height: .6rem;
  background: var(--green);
  transform: scale(0);
  transition: transform .14s ease;
}

.page-faq .checklist__box:checked {
  border-color: var(--green);
}

.page-faq .checklist__box:checked::after {
  transform: scale(1);
}

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

/* ---------- 仍需帮助 ---------- */
.page-faq .faq-help {
  border: 2px solid var(--green);
  background:
    linear-gradient(135deg, rgba(53, 224, 138, .12), transparent 58%),
    var(--night);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  display: grid;
  gap: 1rem;
}

.page-faq .faq-help .section__title {
  margin-bottom: 0;
}

.page-faq .faq-help__text {
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.85;
  max-width: 62ch;
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-help__meta {
  display: grid;
  gap: .5rem;
  margin: 0;
  padding: .9rem 0 0;
  border-top: 2px dashed var(--faq-line);
}

.page-faq .faq-help__meta-row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: .5rem .75rem;
  align-items: baseline;
}

.page-faq .faq-help__meta dt {
  font-family: var(--font-label);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-help__meta dd {
  margin: 0;
  font-family: var(--font-body);
  font-size: .875rem;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-help__meta a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: .22em;
}

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

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin: .35rem 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-lookup__bar {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .qa-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-fixes__layout {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  }

  .page-faq .code-row__head {
    grid-template-columns: var(--faq-col) minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
    padding: 1rem 1.15rem;
  }

  .page-faq .code-row__num {
    font-size: 1.75rem;
    padding-left: .65rem;
  }

  .page-faq .code-row__body {
    margin: 0 1.15rem;
    padding-top: .9rem;
    padding-left: 0;
    padding-right: 0;
  }

  .page-faq .code-row__body {
    padding-left: 0;
  }
}

@media (min-width: 1100px) {
  .page-faq .code-row__body {
    padding-left: calc(var(--faq-col) + 1.15rem);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-code-row,
  .page-faq .code-row__num {
    font-size: 1.3rem;
  }

  .page-faq .code-row__line {
    grid-template-columns: 1fr;
    gap: .15rem;
  }

  .page-faq .faq-help__meta-row {
    grid-template-columns: 1fr;
    gap: .15rem;
  }

  .page-faq .faq-steps {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .code-row,
  .page-faq .faq-cat,
  .page-faq .checklist__label,
  .page-faq .checklist__box::after {
    transition: none;
  }

  .page-faq .faq-steps {
    transform: none;
  }
}