.page-faq {
  --faq-line: var(--ink-700);
  --faq-glow: rgba(43, 245, 200, 0.1);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  top: 12%;
  width: min(46%, 380px);
  height: 76%;
  background: radial-gradient(circle at 78% 40%, var(--faq-glow), transparent 68%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan-500);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--chalk-50);
}

.page-faq .faq-hero__lede {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.9vw, 18px);
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
  padding-top: clamp(28px, 5vw, 52px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist-400);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 4px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan-500);
  border-bottom-color: var(--cyan-500);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan-200);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist-400);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-block {
  padding-bottom: clamp(34px, 5vw, 56px);
  margin-bottom: clamp(34px, 5vw, 56px);
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: 104px;
}

.page-faq .faq-block--last {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-block__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ember-300);
}

.page-faq .faq-block__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--chalk-50);
}

.page-faq .faq-block__lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 三步 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding: 20px 20px 18px;
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--cyan-500);
  border-radius: var(--r-md);
}

.page-faq .faq-step__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.04em;
  color: var(--cyan-500);
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk-50);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .media-frame {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-faq .media-frame__cap {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist-400);
}

/* ---------- 问答卡 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 14px;
}

.page-faq .faq-card {
  padding: 19px 20px 18px;
  background: var(--glass-teal);
  border: 1px solid var(--faq-line);
  border-top: 2px solid var(--cyan-500);
  border-radius: var(--r-md);
}

.page-faq .faq-card--ember {
  border-top-color: var(--ember-500);
}

.page-faq .faq-card__q {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--chalk-50);
}

.page-faq .faq-card__a {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-card__a + .faq-card__q {
  margin-top: 18px;
}

/* ---------- 数据表 ---------- */
.page-faq .data-table__wrap {
  margin: 0 0 26px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  overflow-x: auto;
}

.page-faq .faq-table__cap {
  padding: 12px 14px 6px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.page-faq .data-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .data-table th,
.page-faq .data-table td {
  padding: 12px 14px;
  text-align: left;
  border-top: 1px solid var(--faq-line);
}

.page-faq .data-table thead th {
  border-top: 0;
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--cyan-200);
}

.page-faq .data-table td {
  color: var(--text-soft);
}

.page-faq .data-table td:first-child {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--chalk-50);
  white-space: nowrap;
}

.page-faq .data-table tbody tr:hover {
  background: rgba(155, 255, 232, 0.06);
}

/* ---------- 折叠面板 ---------- */
.page-faq .fold {
  margin-top: 6px;
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
}

.page-faq .fold__head {
  display: block;
  width: 100%;
  padding: 15px 18px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--chalk-50);
  cursor: pointer;
}

.page-faq .fold__head:hover,
.page-faq .fold__head:focus-visible {
  color: var(--cyan-500);
}

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

.page-faq .fold[data-open="true"] .fold__panel {
  display: block;
}

/* ---------- 时间线 ---------- */
.page-faq .faq-timeline {
  position: relative;
  display: grid;
  gap: 20px;
  margin: 0 0 26px;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--faq-line);
}

.page-faq .faq-timeline li {
  position: relative;
}

.page-faq .faq-timeline li::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan-500);
  box-shadow: 0 0 0 4px rgba(43, 245, 200, 0.12);
}

.page-faq .faq-timeline__k {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan-200);
}

.page-faq .faq-timeline__v {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 提示块 ---------- */
.page-faq .faq-tip {
  margin: 0 0 24px;
  padding: 18px 20px 16px;
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--ember-500);
  border-radius: var(--r-md);
}

.page-faq .faq-tip__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--ember-300);
}

.page-faq .faq-tip ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 联系方式条 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-contact li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  padding: 14px 18px;
  background: var(--ink-800);
}

.page-faq .faq-contact__k {
  min-width: 96px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-400);
}

.page-faq .faq-contact__v {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--chalk-50);
}

.page-faq .faq-contact__v a,
.page-faq .faq-note a {
  color: var(--cyan-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 200, 0.4);
}

.page-faq .faq-contact__v a:hover,
.page-faq .faq-note a:hover {
  border-bottom-color: var(--cyan-500);
}

.page-faq .faq-note {
  margin: 0;
  max-width: 66ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist-400);
}

/* ---------- 下一站 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 12px;
}

.page-faq .faq-next__item {
  display: block;
  padding: 18px 20px;
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-next__item:hover,
.page-faq .faq-next__item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan-500);
  background: rgba(155, 255, 232, 0.08);
}

.page-faq .faq-next__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--chalk-50);
}

.page-faq .faq-next__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-card:first-child {
    grid-column: 1 / -1;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 60px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 0;
    padding-left: 18px;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .faq-index__link {
    padding: 9px 0 9px 4px;
  }

  .page-faq .faq-qa {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-faq .faq-card:first-child {
    grid-column: auto;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-step__num {
    font-size: 22px;
  }

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

  .page-faq .faq-contact__v {
    width: 100%;
    overflow-wrap: anywhere;
  }
}

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

  .page-faq .faq-next__item:hover,
  .page-faq .faq-next__item:focus-visible {
    transform: none;
  }
}