.page-faq {
  padding-bottom: clamp(48px, 8vw, 104px);
}

/* ---------- 顶部声明区 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 48px);
  align-items: end;
  padding-top: clamp(20px, 4vw, 48px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

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

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(31px, 5.6vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--ink);
}

.page-faq .faq-hero .lede {
  margin-top: 16px;
  max-width: 62ch;
  color: var(--mute);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: linear-gradient(150deg, var(--panel), rgba(122, 92, 255, 0.3) 60%, rgba(38, 240, 208, 0.16));
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    padding-bottom: clamp(36px, 6vw, 72px);
  }
  .page-faq .faq-hero__media {
    aspect-ratio: 9 / 13;
  }
}

/* ---------- 三条关键数字 ---------- */
.page-faq .faq-figures {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--line);
}

.page-faq .faq-figures__cell {
  padding: 20px 22px 22px;
  background: var(--panel);
}

.page-faq .faq-figures__label {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-faq .faq-figures__num {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6.4vw, 52px);
  font-weight: 800;
  line-height: 1;
  color: var(--cyan);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-figures__unit {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--mute);
}

@media (min-width: 700px) {
  .page-faq .faq-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 主体：索引 + 问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 44px);
  margin-top: clamp(28px, 5vw, 60px);
}

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

.page-faq .faq-filter {
  display: grid;
  gap: 8px;
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.page-faq .faq-filter__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
  font-weight: 700;
}

.page-faq .faq-filter__input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--void);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.page-faq .faq-filter__input::placeholder {
  color: var(--mute);
}

.page-faq .faq-filter__input:focus-visible {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(31, 107, 255, 0.28);
}

.page-faq .faq-index {
  margin-top: 14px;
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--mute);
  text-decoration: none;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.page-faq .faq-index__link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.2s, box-shadow 0.2s;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink);
  background: rgba(31, 107, 255, 0.12);
  border-color: rgba(31, 107, 255, 0.4);
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link:focus-visible::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(38, 240, 208, 0.16);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(220px, 262px) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__link {
    width: 100%;
    padding: 10px 12px;
    white-space: normal;
  }
}

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

.page-faq .faq-group {
  counter-reset: faq;
  padding-bottom: clamp(20px, 4vw, 36px);
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  padding-top: clamp(22px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 50px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--edge);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--blue);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ---------- 行内配图 ---------- */
.page-faq .faq-inline-media {
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(150deg, var(--panel), rgba(38, 240, 208, 0.16) 65%, rgba(31, 107, 255, 0.24));
}

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

@media (min-width: 760px) {
  .page-faq .faq-inline-media {
    aspect-ratio: 21 / 9;
  }
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  counter-increment: faq;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: #101a2c;
  box-shadow: 0 0 0 1px rgba(38, 240, 208, 0.14);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  color: var(--cyan);
}

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

.page-faq .faq-item__num::before {
  content: counter(faq, decimal-leading-zero);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--mute);
  border-bottom: 2px solid var(--mute);
  transform: rotate(45deg);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 40px;
  color: var(--mute);
  font-size: 15px;
  line-height: 1.75;
}

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

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__tip {
  padding: 10px 12px;
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius-sm);
  background: rgba(38, 240, 208, 0.07);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.65;
}

@media (min-width: 760px) {
  .page-faq .faq-item__q {
    padding: 17px 22px;
  }
  .page-faq .faq-item__a {
    padding: 0 24px 20px 54px;
  }
}

/* ---------- 结尾联系面板 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(24px, 4vw, 44px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(31, 107, 255, 0.2), rgba(122, 92, 255, 0.16) 52%, rgba(38, 240, 208, 0.14)),
    var(--panel);
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-faq .faq-cta__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .faq-cta__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cta__text {
  margin: 0 0 14px;
  max-width: 58ch;
  color: var(--mute);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-cta__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-cta__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 820px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: center;
  }
  .page-faq .faq-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

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