.page-faq {
  display: block;
  color: var(--text);
  padding-bottom: clamp(48px, 6vw, 96px);
}

.page-faq .faq-hero {
  padding: clamp(26px, 3.6vw, 48px) 0 clamp(22px, 3vw, 40px);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 17ch;
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2vw, 24px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: clamp(20px, 2.8vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__facts li:nth-child(2) .num {
  color: var(--violet-soft);
}

.page-faq .faq-hero__facts li:nth-child(3) .num {
  color: var(--green);
}

/* 三步上手 */
.page-faq .faq-steps {
  position: relative;
  border: 1px solid var(--line);
  border-top: 2px solid var(--violet);
  background: var(--panel);
  border-radius: var(--r);
  padding: clamp(16px, 2.2vw, 24px) clamp(16px, 2.4vw, 28px);
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-faq .faq-steps__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-steps__track {
  display: block;
  width: 100%;
  height: 6px;
  margin: 12px 0 14px;
  color: var(--line-strong);
}

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  align-items: baseline;
}

.page-faq .faq-steps__n {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--cyan);
}

.page-faq .faq-steps__t {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-steps__d {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* 网格骨架 */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}

/* 左侧分类目录 */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--r);
  overflow: hidden;
}

.page-faq .faq-index__title {
  margin: 0;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--line-strong);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 14px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--muted);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index__link .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--line-strong);
  transition: color 0.2s ease;
}

.page-faq .faq-index__link:hover {
  color: var(--white);
  background: var(--violet-deep);
}

.page-faq .faq-index__link:hover .num {
  color: var(--violet-soft);
}

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

.page-faq .faq-index__link[aria-current] {
  color: var(--white);
  border-left-color: var(--cyan);
  background: var(--violet-deep);
}

.page-faq .faq-index__link[aria-current] .num {
  color: var(--cyan);
}

/* 分类与问答 */
.page-faq .faq-cat {
  scroll-margin-top: 112px;
}

.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(36px, 4.6vw, 66px);
}

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-cat__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  color: var(--violet);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-cat__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

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

.page-faq .qa {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  background: var(--panel);
  border-radius: var(--r);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .qa:hover {
  border-left-color: var(--violet-soft);
}

.page-faq .qa[open] {
  border-color: var(--line-strong);
  border-left-color: var(--cyan);
  background: var(--panel-2);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  transition: color 0.2s ease;
}

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

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

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

.page-faq .qa__idx {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--violet-soft);
}

.page-faq .qa[open] .qa__idx {
  color: var(--cyan);
}

.page-faq .qa__sign {
  flex: 0 0 auto;
  margin-left: auto;
  padding-top: 1px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.3;
  color: var(--violet-soft);
}

.page-faq .qa[open] .qa__sign {
  color: var(--cyan);
}

.page-faq .qa__a {
  padding: 0 20px 18px 56px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 18px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--r);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* 右侧延伸入口 */
.page-faq .faq-next {
  border-top: 2px solid var(--violet);
  padding-top: 14px;
}

.page-faq .faq-next__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--line-strong);
}

.page-faq .faq-next__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-next__link {
  display: block;
  padding: 9px 11px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--r);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-next__link::after {
  content: " →";
  color: var(--cyan);
}

.page-faq .faq-next__link:hover {
  color: var(--white);
  border-color: var(--violet);
  background: var(--violet-deep);
}

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

@media (min-width: 600px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-grid {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 48px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 108px;
  }

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

  .page-faq .faq-next {
    grid-column: 2;
  }

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

@media (min-width: 1200px) {
  .page-faq .faq-grid {
    grid-template-columns: 200px minmax(0, 1fr) 190px;
    gap: clamp(32px, 3.4vw, 52px);
  }

  .page-faq .faq-next {
    grid-column: 3;
    position: sticky;
    top: 108px;
  }

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

  .page-faq .qa__a {
    padding-right: clamp(24px, 3vw, 48px);
  }
}

@media (max-width: 559px) {
  .page-faq .qa__q {
    padding: 14px 15px;
    gap: 10px;
  }

  .page-faq .qa__a {
    padding: 0 15px 16px 15px;
  }

  .page-faq .faq-cat__head {
    gap: 4px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .faq-index__link,
  .page-faq .faq-next__link {
    transition: none;
  }
}
<<<END>>>