.page-faq {
  --faq-card-bg: linear-gradient(158deg, rgba(8, 12, 18, .82), rgba(8, 12, 18, .42));
  --faq-card-bg-hover: linear-gradient(158deg, rgba(20, 27, 51, .96), rgba(8, 12, 18, .62));
  --faq-line: 1px solid var(--slate-line);
  --faq-gap: clamp(14px, 2.4vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(38px, 7vw, 84px) clamp(30px, 5vw, 52px);
  background:
    radial-gradient(115% 95% at 8% -18%, rgba(168, 255, 62, .18), transparent 56%),
    radial-gradient(85% 80% at 96% -6%, rgba(255, 106, 31, .18), transparent 58%),
    linear-gradient(180deg, var(--deep-indigo), var(--arena-night) 72%);
  border-bottom: var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green) 0 22%, var(--ember-orange) 22% 44%, transparent 44% 100%);
  transform: skewX(-16deg) translateY(-6px);
  opacity: .9;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 21ch;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.6vw, 60px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: .005em;
  text-transform: none;
  color: var(--cool-white);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: clamp(16px, 1.9vw, 18.5px);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-alert {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 26px 0 0;
  max-width: 76ch;
  padding: 13px 18px;
  border-left: 4px solid var(--amber-signal);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(255, 194, 75, .09);
  font-size: 15px;
  line-height: 1.7;
  color: var(--cool-white);
}

.page-faq .faq-alert__mark {
  flex: 0 0 auto;
  font-size: 11px;
  line-height: 1.9;
  color: var(--amber-signal);
}

/* ---------- 分类锚点条 ---------- */
.page-faq .faq-rail {
  background: rgba(20, 27, 51, .6);
  border-bottom: var(--faq-line);
}

.page-faq .faq-rail__inner {
  display: flex;
  gap: 8px;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 13px var(--gutter);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  padding: 7px 13px;
  border: var(--faq-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ink-dim);
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-rail__link:hover {
  color: var(--cool-white);
  border-color: var(--ember-orange);
}

.page-faq .faq-rail__link.is-active {
  color: var(--arena-night);
  background: var(--neon-green);
  border-color: var(--neon-green);
}

/* ---------- 三件事自查 ---------- */
.page-faq .faq-checks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-check {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--faq-card-bg);
  border: var(--faq-line);
  border-radius: var(--radius-m);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-check::before {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  width: 58px;
  height: 3px;
  background: var(--neon-green);
  transform: skewX(-16deg);
}

.page-faq .faq-check:hover {
  transform: translateY(-4px);
  border-color: rgba(168, 255, 62, .55);
}

.page-faq .faq-check__num {
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ember-orange);
}

.page-faq .faq-check__title {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 20px;
  line-height: 1.3;
  color: var(--cool-white);
}

.page-faq .faq-check__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-item {
  border: var(--faq-line);
  border-radius: var(--radius-m);
  background: var(--faq-card-bg);
  transition: background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-item:hover {
  background: var(--faq-card-bg-hover);
  border-color: rgba(255, 106, 31, .5);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: rgba(168, 255, 62, .45);
  box-shadow: inset 3px 0 0 var(--neon-green);
}

.page-faq .faq-item > summary {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--cool-white);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::before {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.45;
  color: var(--neon-green);
  transition: color .18s var(--ease);
}

.page-faq .faq-item[open] > summary::before {
  content: "–";
  color: var(--ember-orange);
}

.page-faq .faq-item > summary:hover {
  color: var(--neon-green);
}

.page-faq .faq-answer {
  padding: 0 16px 18px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--neon-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 255, 62, .42);
}

.page-faq .faq-answer a:hover {
  color: var(--ember-orange);
  border-bottom-color: rgba(255, 106, 31, .55);
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  margin: 12px 0 12px;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 36px;
  margin-bottom: 10px;
  line-height: 1.75;
}

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

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--electric-blue);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

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

.page-faq .faq-figure .media-frame__caption {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-faint);
}

/* ---------- 客户端章节 ---------- */
.page-faq .faq-client-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
}

.page-faq .faq-client-lede {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-client-head .faq-figure {
  margin: 0;
  max-width: 380px;
}

/* ---------- 反馈清单 ---------- */
.page-faq .faq-checklist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid rgba(244, 247, 251, .16);
  border-radius: var(--radius-s);
  background: rgba(8, 12, 18, .38);
}

.page-faq .faq-checklist__num {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--neon-green);
}

.page-faq .faq-checklist__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--cool-white);
}

.page-faq .faq-escalate__note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-escalate__note a {
  color: var(--neon-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 255, 62, .42);
}

.page-faq .faq-escalate__note a:hover {
  color: var(--ember-orange);
}

/* ---------- 术语速查 ---------- */
.page-faq .faq-terms {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-faq .faq-terms__term {
  margin: 0;
  padding: 16px 0 4px;
  border-top: var(--faq-line);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--neon-green);
}

.page-faq .faq-terms__desc {
  margin: 0;
  padding: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-faq .faq-foot-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-faint);
}

.page-faq .faq-foot-note a {
  color: var(--neon-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 255, 62, .42);
}

.page-faq .faq-foot-note a:hover {
  color: var(--ember-orange);
}

/* ---------- 键盘焦点 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 2px;
  border-radius: var(--radius-s);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-checks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--faq-gap) clamp(22px, 3vw, 36px);
  }

  .page-faq .faq-item:nth-child(2n) {
    margin-top: 24px;
  }

  .page-faq .faq-answer {
    padding-left: 42px;
    padding-right: 22px;
  }

  .page-faq .faq-client-head {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .page-faq .faq-terms {
    display: grid;
    grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
    column-gap: 28px;
  }

  .page-faq .faq-terms__term {
    padding: 18px 0;
  }

  .page-faq .faq-terms__desc {
    padding: 18px 0;
    border-top: var(--faq-line);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__title {
    max-width: 24ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-check,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .faq-check:hover,
  .page-faq .faq-item:hover {
    transform: none;
  }
}