.page-faq {
  --faq-line: 1px solid var(--ink-600);
  background: var(--ink-800);
  color: var(--text-dark-1);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background:
    radial-gradient(115% 85% at 90% -10%, rgba(217, 169, 78, 0.18) 0%, rgba(217, 169, 78, 0) 60%),
    radial-gradient(70% 60% at 4% 100%, rgba(200, 64, 47, 0.12) 0%, rgba(200, 64, 47, 0) 65%),
    var(--ink-900);
  border-bottom: var(--faq-line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-block: clamp(2.2rem, 6vw, 4.2rem);
}

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

.page-faq .faq-eyebrow {
  margin: 1.1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold-500);
}

.page-faq h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 5.4vw, 3.15rem);
  line-height: 1.22;
  letter-spacing: 0.02em;
  color: var(--text-dark-1);
  max-width: 20ch;
}

.page-faq .faq-lead {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-dark-2);
}

.page-faq .faq-hint {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.35rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--ink-600);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--text-dark-2);
  max-width: 46ch;
}

.page-faq .faq-hint .tag {
  flex: none;
}

.page-faq .faq-hero__media {
  position: relative;
  aspect-ratio: 4 / 3;
  border: var(--faq-line);
  border-radius: 2px;
  background: var(--ink-700);
  overflow: hidden;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-500), var(--cinnabar-500));
  pointer-events: none;
}

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

/* ---------- 主体栅格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.75rem);
  padding-block: clamp(1.6rem, 4.5vw, 3.2rem);
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
  border-bottom: var(--faq-line);
  padding-bottom: 0.8rem;
}

.page-faq .faq-index__eyebrow {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--text-dark-2);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--ink-600);
  border-radius: 2px;
  color: var(--text-dark-2);
  text-decoration: none;
  font-size: 0.86rem;
  white-space: nowrap;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--gold-200);
  border-color: var(--gold-500);
  background: var(--ink-700);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold-500);
}

.page-faq .faq-index__dash {
  width: 12px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
  flex: none;
}

.page-faq .faq-index__note {
  margin: 0.65rem 0 0;
  font-size: 0.76rem;
  color: var(--text-dark-2);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 1.25rem;
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.2rem, 5.5vw, 3.6rem);
}

.page-faq .faq-group__head {
  position: relative;
  padding-bottom: 0.85rem;
  min-width: 0;
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(100%, 320px);
  height: 1px;
  background: linear-gradient(90deg, var(--gold-500), rgba(217, 169, 78, 0));
}

.page-faq .faq-group__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  color: var(--gold-500);
}

.page-faq .faq-group h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--text-dark-1);
}

.page-faq .faq-group__desc {
  margin: 0.55rem 0 0;
  max-width: 48ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-dark-2);
}

/* ---------- 折页条目 ---------- */
.page-faq .faq-list {
  margin-top: 0.9rem;
}

.page-faq .faq-item {
  position: relative;
  background: var(--ink-700);
  border-left: 1px solid var(--gold-500);
  transition: background-color 220ms var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 0.5rem;
}

.page-faq .faq-item[open] {
  background: var(--ink-600);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.95rem 1.05rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--text-dark-1);
  transition: color 200ms var(--ease);
}

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

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

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--gold-200);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: -2px;
}

.page-faq .faq-mark {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 0.58rem;
  border: 1px solid var(--gold-500);
  border-radius: 50%;
  transition: background-color 220ms var(--ease), border-color 220ms var(--ease);
}

.page-faq .faq-item[open] .faq-mark {
  background: var(--cinnabar-500);
  border-color: var(--cinnabar-500);
}

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

.page-faq .faq-answer {
  position: relative;
  background: var(--paper-100);
  color: var(--text-light-1);
  padding: 1.05rem 1.1rem 1.15rem 1.95rem;
  border-top: 1px solid var(--paper-300);
}

.page-faq .faq-answer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 34px;
  background: linear-gradient(180deg, rgba(14, 44, 64, 0.16), rgba(14, 44, 64, 0));
  pointer-events: none;
}

.page-faq .faq-answer p {
  position: relative;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.9;
  color: var(--text-light-1);
}

.page-faq .faq-answer a {
  color: var(--text-light-1);
  text-decoration: underline;
  text-decoration-color: var(--jade-400);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-answer a:hover {
  text-decoration-color: var(--cinnabar-500);
}

/* ---------- 带配图的分组 ---------- */
.page-faq .faq-aside {
  margin: 1rem 0 0;
  aspect-ratio: 7 / 9;
  max-width: 260px;
  border: var(--faq-line);
  border-radius: 2px;
  background: var(--ink-700);
  overflow: hidden;
}

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

/* ---------- 求助区块 ---------- */
.page-faq .faq-help {
  scroll-margin-top: 1.25rem;
  margin-top: clamp(2.2rem, 5.5vw, 3.6rem);
  padding: clamp(1.25rem, 3.4vw, 2.1rem);
  border: 1px solid var(--jade-400);
  border-radius: 3px;
  background:
    linear-gradient(140deg, rgba(79, 179, 156, 0.14) 0%, rgba(79, 179, 156, 0) 62%),
    var(--ink-700);
}

.page-faq .faq-help h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  line-height: 1.35;
  color: var(--text-dark-1);
}

.page-faq .faq-help__lead {
  margin: 0.7rem 0 0;
  max-width: 52ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-dark-2);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.page-faq .faq-help__item {
  display: grid;
  gap: 0.3rem;
  padding: 0.85rem 0.95rem;
  background: rgba(5, 19, 31, 0.45);
  border-left: 1px solid var(--jade-400);
  min-width: 0;
}

.page-faq .faq-help__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--jade-400);
}

.page-faq .faq-help__value {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--gold-200);
  word-break: break-word;
}

.page-faq .faq-help__value a {
  color: var(--gold-200);
  text-decoration: underline;
  text-decoration-color: var(--gold-500);
  text-underline-offset: 3px;
}

.page-faq .faq-help__value a:hover {
  color: var(--text-dark-1);
}

.page-faq .faq-help__note {
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--text-dark-2);
}

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

  .page-faq .faq-item > summary {
    font-size: 1rem;
    padding: 1rem 1.2rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    column-gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-group--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    column-gap: clamp(1.4rem, 3.5vw, 2.4rem);
    align-items: start;
  }

  .page-faq .faq-group--split .faq-group__head {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-group--split .faq-list {
    grid-column: 1;
    grid-row: 2;
  }

  .page-faq .faq-group--split .faq-aside {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin: 0;
    max-width: none;
    position: sticky;
    top: 1.2rem;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 196px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.5rem;
    border-bottom: 0;
    border-left: 1px solid var(--ink-600);
    padding: 0 0 0 0.9rem;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0.3rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    border-color: transparent;
    padding: 0.42rem 0.5rem;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: var(--ink-600);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-mark,
  .page-faq .faq-item > summary,
  .page-faq .faq-index__link {
    transition-duration: 1ms;
  }
}