.page-faq {
  --faq-glow-gold: rgba(217, 164, 65, 0.22);
  --faq-glow-teal: rgba(40, 215, 192, 0.14);
  background:
    radial-gradient(72% 46% at 90% 0%, rgba(217, 164, 65, 0.12), transparent 62%),
    linear-gradient(180deg, var(--deep) 0%, var(--deep-2) 46%, var(--deep) 100%);
  color: var(--foam);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(44px, 8vw, 100px) clamp(38px, 6vw, 74px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(58% 76% at 82% 4%, var(--faq-glow-gold), transparent 64%),
    radial-gradient(54% 66% at 6% 98%, var(--faq-glow-teal), transparent 68%);
  clip-path: polygon(0 0, 100% 0, 100% 84%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 62px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 16ch;
  color: var(--foam);
}

.page-faq .faq-hero__text {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.82);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__aside {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-hero__aside .index-figure {
  display: block;
  font-family: var(--mono);
  font-size: clamp(64px, 11vw, 116px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(217, 164, 65, 0.6);
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 16px;
  margin: 18px 0 0;
}

.page-faq .faq-hero__facts > div {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(143, 166, 184, 0.22);
}

.page-faq .faq-hero__facts > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__facts dt {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-hero__facts dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 章节标题 ---------- */
.page-faq .faq-head {
  margin-bottom: clamp(26px, 4vw, 46px);
  max-width: 68ch;
}

.page-faq .faq-head h2 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(25px, 3.6vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-faq .faq-head__text {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 215, 192, 0.45);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--gold-lit);
  border-bottom-color: var(--gold-lit);
}

/* ---------- 四步进度 ---------- */
.page-faq .faq-steps,
.page-faq .faq-cards-sec,
.page-faq .faq-glossary,
.page-faq .faq-qa {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-faq .faq-progress {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(26px, 4vw, 42px);
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-progress__item a {
  display: grid;
  gap: 6px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(217, 164, 65, 0.55);
  background: linear-gradient(158deg, rgba(13, 43, 69, 0.92), rgba(7, 26, 43, 0.92));
  color: inherit;
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.page-faq .faq-progress__item a:hover,
.page-faq .faq-progress__item a:focus-visible {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  border-left-color: var(--teal);
  background: linear-gradient(158deg, rgba(15, 50, 79, 0.96), rgba(7, 26, 43, 0.96));
}

.page-faq .faq-progress__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-progress__item strong {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
}

.page-faq .faq-progress__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-steps__figure {
  margin: 0 0 clamp(30px, 4vw, 48px);
}

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

.page-faq .faq-step-list {
  display: grid;
  gap: 24px;
}

.page-faq .faq-step {
  position: relative;
  min-width: 0;
  padding: 4px 0 4px 20px;
  border-left: 1px solid var(--line-strong);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(217, 164, 65, 0.65);
}

.page-faq .faq-step h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.45;
}

.page-faq .faq-step p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.8);
}

.page-faq .faq-step .faq-step__meta {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 版本对照 ---------- */
.page-faq .faq-versions {
  padding-block: clamp(46px, 7vw, 92px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 43, 69, 0.62), rgba(7, 26, 43, 0.74));
}

.page-faq .faq-vtabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.page-faq .faq-vtabs .tabs__tab {
  min-height: 44px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  background: rgba(7, 26, 43, 0.72);
  color: var(--mist);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

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

.page-faq .faq-vtabs .tabs__tab[aria-selected="true"] {
  color: var(--ink);
  border-color: var(--gold);
  background: linear-gradient(120deg, var(--gold-lit), var(--gold));
}

.page-faq .faq-vtabs .tabs__tab:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-faq .faq-compare {
  display: grid;
  gap: 14px;
}

.page-faq .faq-compare__col {
  min-width: 0;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background: rgba(7, 26, 43, 0.78);
}

.page-faq .faq-compare__col--mobile {
  border-top: 2px solid var(--teal);
}

.page-faq .faq-compare__col--desk {
  border-top: 2px solid var(--gold);
}

.page-faq .faq-compare__title {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-compare__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-compare__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.84);
}

.page-faq .faq-compare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-faq .faq-compare__col--mobile .faq-compare__list li::before {
  background: var(--teal);
}

.page-faq .faq-versions__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

/* ---------- 速查卡 ---------- */
.page-faq .faq-cards {
  display: grid;
  gap: 16px;
}

.page-faq .faq-card {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 22px;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(217, 164, 65, 0.13), transparent 62%),
    rgba(7, 26, 43, 0.78);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-faq .faq-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}

.page-faq .faq-card__tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink);
  background: var(--coral);
}

.page-faq .faq-card h3 {
  margin: 16px 0 14px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.45;
}

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

.page-faq .faq-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.82);
}

.page-faq .faq-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-gloss {
  display: grid;
  gap: 26px;
}

.page-faq .faq-gloss__group {
  min-width: 0;
  padding-top: 18px;
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-gloss__group h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
}

.page-faq .faq-gloss__group h3 span {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-gloss__list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-gloss__list > div {
  display: grid;
  gap: 3px;
  padding-bottom: 11px;
  border-bottom: 1px dashed rgba(143, 166, 184, 0.22);
}

.page-faq .faq-gloss__list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-gloss__list dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--foam);
}

.page-faq .faq-gloss__list dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-qa {
  border-top: 1px solid var(--line);
}

.page-faq .faq-qa__inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-qa__list .accordion__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-qa__list .accordion__item:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  min-height: 44px;
  padding: 19px 0;
  border: 0;
  background: transparent;
  color: var(--foam);
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color 0.3s var(--ease);
}

.page-faq .accordion__trigger:hover {
  color: var(--gold-lit);
}

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

.page-faq .accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--gold);
}

.page-faq .accordion__icon::before {
  transform: translateY(-50%);
}

.page-faq .accordion__icon::after {
  transform: translateY(-50%) rotate(90deg);
  transition: transform 0.3s var(--ease);
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .accordion__panel {
  padding: 0 0 22px;
}

.page-faq .accordion__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(244, 247, 245, 0.82);
}

/* ---------- 下一步入口 ---------- */
.page-faq .faq-next {
  padding-block: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next__item {
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(13, 43, 69, 0.86), rgba(2, 10, 18, 0.86));
  color: inherit;
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-faq .faq-next__item:hover,
.page-faq .faq-next__item:focus-visible {
  transform: translateY(-3px);
  border-color: var(--teal);
}

.page-faq .faq-next__num {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-next__item strong {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.35;
}

.page-faq .faq-next__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-progress {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-gloss {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

@media (min-width: 880px) {
  .page-faq .faq-step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 34px;
    align-items: start;
  }

  .page-faq .faq-step-list > .faq-step:nth-child(even) {
    margin-top: 32px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.5fr);
    gap: 54px;
    align-items: end;
  }

  .page-faq .faq-hero__aside {
    padding: 4px 0 4px 26px;
    border-top: 0;
    border-left: 1px solid var(--line-strong);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-qa__inner {
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-head--side {
    position: sticky;
    top: 96px;
    margin-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }
}