.page-faq {
  --faq-edge: rgba(42, 74, 107, .55);
  --faq-card: rgba(16, 42, 67, .42);
  --faq-card-open: rgba(16, 42, 67, .72);
  padding-bottom: 76px;
  background: var(--ink);
  color: var(--white);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 44px;
  border-bottom: 1px solid var(--faq-edge);
  background:
    radial-gradient(720px 320px at 84% -12%, rgba(25, 211, 197, .13), transparent 62%),
    radial-gradient(560px 280px at 6% 4%, rgba(255, 106, 42, .10), transparent 60%),
    var(--ink);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 74, 107, .30) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 74, 107, .30) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 76%);
}

.page-faq .faq-hero .container,
.page-faq .faq-body {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.35rem, 9vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-hero__intro {
  max-width: 58ch;
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-spotlight {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(16, 42, 67, .92), rgba(11, 27, 43, .94));
  overflow: hidden;
}

.page-faq .faq-spotlight::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--orange), rgba(255, 106, 42, 0));
}

.page-faq .faq-spotlight__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-spotlight__name {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 5vw, 1.95rem);
  line-height: 1.15;
  color: var(--white);
}

.page-faq .faq-spotlight__text {
  margin: 12px 0 0;
  font-size: .92rem;
  line-height: 1.76;
  color: var(--silver);
}

.page-faq .faq-spotlight .tag-list {
  margin-top: 16px;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-top: 38px;
}

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

.page-faq .faq-index {
  padding: 14px 14px 12px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-md);
  background: rgba(16, 42, 67, .5);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--silver);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 2px 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 9px;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-pill);
  color: var(--silver);
  font-size: .84rem;
  line-height: 1.35;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--cyan);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--white);
  border-color: rgba(25, 211, 197, .55);
  background: rgba(25, 211, 197, .08);
}

.page-faq .faq-stream {
  display: grid;
  gap: 16px;
  min-width: 0;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-lg);
  background: var(--faq-card);
  overflow: hidden;
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(42, 74, 107, .9);
}

.page-faq .faq-item[open] {
  border-color: rgba(25, 211, 197, .42);
  background: var(--faq-card-open);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: 40px 1fr 20px;
  align-items: center;
  gap: 12px;
  padding: 17px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--white);
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
  border-radius: var(--radius-lg);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .faq-item__q {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.48;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-item__icon {
  position: relative;
  justify-self: end;
  width: 18px;
  height: 18px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--silver);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item__icon::before {
  width: 8px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 8px;
}

.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--orange);
}

.page-faq .faq-item[open] .faq-item__icon::before {
  background: var(--orange);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item__answer {
  padding: 0 16px 20px;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-item__answer p {
  margin: 0 0 12px;
}

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

.page-faq .faq-strong {
  color: var(--white);
  font-weight: 700;
  word-break: break-all;
}

.page-faq .faq-item__answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(25, 211, 197, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-item__answer a:hover,
.page-faq .faq-item__answer a:focus-visible {
  color: var(--white);
  border-color: var(--orange);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  padding-left: 38px;
  counter-increment: faqstep;
}

.page-faq .faq-step::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.35;
  color: var(--cyan);
  border: 1px solid rgba(25, 211, 197, .42);
  border-radius: 6px;
}

/* ---------- 标签胶囊 ---------- */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tag {
  padding: 5px 12px;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--mist);
  background: rgba(25, 211, 197, .07);
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-pill);
}

/* ---------- 提示与图 ---------- */
.page-faq .faq-tip {
  margin-top: 16px !important;
  padding: 12px 14px;
  font-size: .88rem;
  color: var(--mist);
  background: rgba(25, 211, 197, .06);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-faq .faq-figure {
  margin: 18px 0 16px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-md);
  background: var(--ink-2);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .03em;
  color: var(--silver);
}

/* ---------- 联系动作 ---------- */
.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 18px;
}

/* ---------- 交互细节 ---------- */
.page-faq .faq-item:target {
  border-color: rgba(255, 106, 42, .6);
}

.page-faq .faq-index__link:target {
  color: var(--white);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 26px 0 56px;
  }

  .page-faq .faq-item__summary {
    grid-template-columns: 48px 1fr 22px;
    gap: 14px;
    padding: 20px 22px;
  }

  .page-faq .faq-item__q {
    font-size: 1.14rem;
  }

  .page-faq .faq-item__answer {
    padding: 0 24px 24px 84px;
    font-size: 1rem;
  }

  .page-faq .faq-figure figcaption {
    font-size: .8rem;
  }
}

@media (min-width: 980px) {
  .page-faq {
    padding-bottom: 104px;
  }

  .page-faq .faq-hero {
    padding: 32px 0 68px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: 52px;
    align-items: start;
    margin-top: 32px;
  }

  .page-faq .faq-hero__intro {
    font-size: 1.05rem;
  }

  .page-faq .faq-spotlight {
    margin-top: 12px;
    padding: 26px 24px 28px;
  }

  .page-faq .faq-body {
    padding-top: 54px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    padding: 0 0 0 20px;
    border: 0;
    border-left: 1px solid var(--faq-edge);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__title {
    margin-bottom: 14px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    position: relative;
    grid-template-columns: 30px 1fr;
    gap: 10px;
    padding: 9px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-index__link::after {
    content: "";
    position: absolute;
    left: -21px;
    top: 13px;
    width: 2px;
    height: 0;
    background: var(--orange);
    transition: height .22s var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: transparent;
    color: var(--white);
  }

  .page-faq .faq-index__link:hover::after,
  .page-faq .faq-index__link:focus-visible::after,
  .page-faq .faq-index__link:target::after {
    height: 16px;
  }

  .page-faq .faq-item__answer {
    padding: 0 32px 30px 86px;
  }

  .page-faq .faq-item__q {
    font-size: 1.2rem;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-index {
    padding-left: 24px;
  }

  .page-faq .faq-index__link::after {
    left: -25px;
  }

  .page-faq .faq-item__answer {
    padding-right: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}