.page-faq {
  padding-block-end: 96px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 48px) clamp(40px, 6vw, 76px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -28%;
  right: -16%;
  width: min(720px, 108vw);
  height: min(720px, 108vw);
  background: radial-gradient(circle at 50% 50%, rgba(122, 77, 255, 0.32), rgba(58, 30, 115, 0.16) 44%, transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -150px;
  right: -130px;
  width: min(660px, 92vw);
  height: 480px;
  background: linear-gradient(135deg, rgba(58, 30, 115, 0.95) 0%, rgba(122, 77, 255, 0.48) 56%, rgba(56, 232, 200, 0.16) 100%);
  clip-path: polygon(34% 0%, 100% 0%, 100% 100%, 0% 78%);
  opacity: 0.58;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

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

.page-faq h1 {
  font-family: var(--font-display);
  font-size: clamp(2.05rem, 5.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--porcelain);
  margin: 14px 0 18px;
}

.page-faq .lede {
  max-width: 62ch;
  color: var(--mist);
}

.page-faq .faq-quicklist {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-faq .faq-quick {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.2rem, 3vw, 1.55rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-faq .faq-quick__label {
  font-size: 0.79rem;
  letter-spacing: 0.03em;
  color: var(--mist);
}

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

.page-faq .faq-hero__figure .media-frame {
  border-radius: var(--radius-lg);
  box-shadow: 0 44px 80px -54px rgba(122, 77, 255, 0.95);
}

/* ---------- 分类标签条 ---------- */

.page-faq .faq-tabs {
  position: sticky;
  top: 74px;
  z-index: 6;
  margin-block: 4px 40px;
  background: rgba(6, 10, 24, 0.86);
  backdrop-filter: blur(16px);
  border-block: 1px solid rgba(43, 55, 102, 0.85);
}

.page-faq .faq-tabs__scroll {
  display: flex;
  gap: 8px;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 12px clamp(16px, 4vw, 40px);
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-tab {
  flex: 0 0 auto;
  padding: 8px 17px;
  border: 1px solid rgba(43, 55, 102, 0.9);
  border-radius: var(--radius-pill);
  background: rgba(14, 23, 48, 0.55);
  color: var(--mist);
  font-family: var(--font-ui);
  font-size: 0.86rem;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  color: var(--porcelain);
  border-color: rgba(122, 77, 255, 0.8);
  background: linear-gradient(135deg, rgba(58, 30, 115, 0.95), rgba(122, 77, 255, 0.34));
  transform: translateY(-1px);
}

.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

/* ---------- 主体栅格 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 44px;
  align-items: start;
}

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

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: 150px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid rgba(43, 55, 102, 0.6);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  background: var(--grad-nebula);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--porcelain);
  margin: 0 0 8px;
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 58ch;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid rgba(43, 55, 102, 0.9);
  border-radius: var(--radius-sm);
  background: linear-gradient(150deg, rgba(14, 23, 48, 0.78) 0%, rgba(6, 10, 24, 0.72) 100%);
  transition: border-color 0.24s ease, box-shadow 0.24s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(122, 77, 255, 0.55);
}

.page-faq .faq-item[open] {
  border-color: rgba(122, 77, 255, 0.7);
  box-shadow: 0 26px 50px -36px rgba(122, 77, 255, 0.9);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  padding: 17px 52px 17px 22px;
  border-radius: var(--radius-sm);
  list-style: none;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--porcelain);
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: -3px;
}

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  bottom: 13px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: var(--grad-lime);
  opacity: 0;
  transform: scaleY(0.32);
  transform-origin: top center;
  transition: opacity 0.22s ease, transform 0.26s ease;
}

.page-faq .faq-item[open] > summary::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--violet);
  transition: color 0.22s ease;
}

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

.page-faq .faq-item__body {
  padding: 0 22px 20px;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item__body::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 16px;
  background: rgba(43, 55, 102, 0.55);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body p + .faq-steps {
  margin-top: 14px;
}

.page-faq .faq-item__body strong {
  color: var(--porcelain);
  font-weight: 600;
}

.page-faq .faq-item__body .faq-num {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-faq .faq-item__body a {
  color: var(--mint);
  text-decoration: underline;
  text-decoration-color: rgba(56, 232, 200, 0.4);
  text-underline-offset: 3px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--lime);
  text-decoration-color: rgba(182, 255, 60, 0.65);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 32px;
  line-height: 1.7;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 3px;
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(122, 77, 255, 0.55);
  border-radius: 50%;
  background: rgba(122, 77, 255, 0.16);
  color: var(--porcelain);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1;
}

/* ---------- 侧栏速查 ---------- */

.page-faq .faq-aside {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.page-faq .faq-timing {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(43, 55, 102, 0.9);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(58, 30, 115, 0.55) 0%, rgba(14, 23, 48, 0.92) 48%, rgba(6, 10, 24, 0.96) 100%);
}

.page-faq .faq-timing__figure {
  position: relative;
}

.page-faq .faq-timing__figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--grad-nebula);
}

.page-faq .faq-timing__body {
  padding: 20px 20px 22px;
}

.page-faq .faq-timing__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--porcelain);
  margin: 6px 0 16px;
}

.page-faq .faq-timing__list {
  display: grid;
  margin: 0;
}

.page-faq .faq-timing__row {
  display: grid;
  gap: 3px;
}

.page-faq .faq-timing__row + .faq-timing__row {
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid rgba(43, 55, 102, 0.5);
}

.page-faq .faq-timing__row dt {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-faq .faq-timing__row dd {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.66;
  color: var(--mist);
}

.page-faq .faq-aside__links {
  border: 1px solid rgba(43, 55, 102, 0.9);
  border-radius: var(--radius);
  background: rgba(14, 23, 48, 0.6);
  padding: 20px;
}

.page-faq .faq-aside__title {
  margin: 0 0 14px;
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-aside__links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .faq-aside__links a {
  position: relative;
  display: block;
  padding-left: 16px;
  color: var(--porcelain);
  font-size: 0.9rem;
  line-height: 1.55;
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .faq-aside__links a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--violet);
  transition: background 0.2s ease, transform 0.2s ease;
}

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

.page-faq .faq-aside__links a:hover::before,
.page-faq .faq-aside__links a:focus-visible::before {
  background: var(--lime);
  transform: scale(1.3);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-quicklist {
    gap: 18px 52px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
  }

  .page-faq .faq-hero__figure {
    transform: translateY(16px) rotate(-1.1deg);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 316px;
    gap: 56px;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 144px;
  }
}

@media (max-width: 640px) {
  .page-faq {
    padding-block-end: 72px;
  }

  .page-faq .faq-hero::after {
    top: -90px;
    right: -190px;
    height: 360px;
  }

  .page-faq .faq-tabs {
    top: 66px;
    margin-block: 0 30px;
  }

  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-faq .faq-group__num {
    font-size: 1.85rem;
  }

  .page-faq .faq-group {
    scroll-margin-top: 128px;
  }

  .page-faq .faq-item > summary {
    padding: 15px 46px 15px 18px;
    font-size: 0.95rem;
  }

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

  .page-faq .faq-group + .faq-group {
    margin-top: 38px;
    padding-top: 30px;
  }
}