.page-faq {
  --faq-gap: clamp(64px, 8vw, 128px);
  --faq-cat-color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(22px, 4vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: clamp(38px, 7.2vw, 78px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin-top: 22px;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.page-faq .faq-hero__stat {
  padding-left: 12px;
  border-left: 2px solid var(--orange);
  font-size: var(--fs-note);
  color: var(--gray);
}

.page-faq .faq-hero__stat .mono {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--white);
}

/* ---------- 速查卡 ---------- */
.page-faq .faq-quick {
  position: relative;
  margin-top: var(--faq-gap);
  overflow: hidden;
}

.page-faq .quick-tex {
  position: absolute;
  top: 6%;
  right: -10%;
  z-index: 0;
  width: min(56vw, 620px);
  opacity: 0.22;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(65% 65% at 55% 45%, #000 0%, transparent 76%);
  mask-image: radial-gradient(65% 65% at 55% 45%, #000 0%, transparent 76%);
}

.page-faq .quick-tex img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
}

.page-faq .quick-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-faq .quick-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 2.8vw, 36px);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-faq .quick-card::before {
  content: attr(data-num);
  position: absolute;
  top: -12px;
  left: clamp(24px, 2.8vw, 36px);
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .quick-card .card__title {
  font-family: var(--font-display);
  font-size: var(--fs-card);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .quick-card .card__text {
  font-size: var(--fs-body);
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .quick-card__link {
  margin-top: auto;
  padding-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  border-bottom: 1px solid transparent;
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .quick-card__link::after {
  content: "→";
  font-family: var(--font-mono);
}

.page-faq .quick-card__link:hover,
.page-faq .quick-card__link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--white);
}

.page-faq .quick-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-faq .quick-card--b::before { color: var(--violet); }
.page-faq .quick-card--c::before { color: var(--orange); }
.page-faq .quick-card--d::before { color: var(--lime); }

/* ---------- 问答导航 ---------- */
.page-faq .faq-qa {
  margin-top: var(--faq-gap);
}

.page-faq .qa-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 3vw, 40px);
}

.page-faq .qa-nav a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.page-faq .qa-nav a::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.page-faq .qa-nav a:nth-child(1)::before { background: var(--cyan); }
.page-faq .qa-nav a:nth-child(2)::before { background: var(--violet); }
.page-faq .qa-nav a:nth-child(3)::before { background: var(--orange); }
.page-faq .qa-nav a:nth-child(4)::before { background: var(--lime); }

.page-faq .qa-nav a:hover,
.page-faq .qa-nav a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-cat {
  margin-top: clamp(48px, 6vw, 88px);
  padding-left: clamp(18px, 3vw, 36px);
  border-left: 3px solid var(--faq-cat-color);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .qa-cat--schedule { --faq-cat-color: var(--cyan); }
.page-faq .qa-cat--version { --faq-cat-color: var(--violet); }
.page-faq .qa-cat--fix { --faq-cat-color: var(--orange); }
.page-faq .qa-cat--browse { --faq-cat-color: var(--lime); }

.page-faq .qa-cat__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}

.page-faq .qa-cat__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 2.6vw, 36px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .qa-cat__note {
  flex-basis: 100%;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .qa-list {
  border-top: 1px solid var(--line);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  border-radius: 12px;
  font-size: clamp(16px, 0.6vw + 14px, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
  transition: color 0.18s ease;
}

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

.page-faq .qa summary::before {
  content: "+";
  flex: none;
  width: 20px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.35;
  color: var(--faq-cat-color);
}

.page-faq .qa[open] summary::before {
  content: "–";
}

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

.page-faq .qa__body {
  max-width: 70ch;
  padding: 0 4px 22px 38px;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .qa__body p + p {
  margin-top: 0.9em;
}

.page-faq .qa__body .mono {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--white);
}

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

.page-faq .qa-media {
  margin-top: 30px;
}

.page-faq .qa-media figcaption {
  margin-top: 12px;
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--gray);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: var(--faq-gap);
  padding-bottom: clamp(64px, 8vw, 120px);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 24px;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(41, 242, 224, 0.12) 0%, transparent 55%),
    radial-gradient(90% 120% at 0% 100%, rgba(255, 106, 43, 0.10) 0%, transparent 60%),
    var(--panel);
}

.page-faq .faq-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-cta p {
  margin-top: 12px;
  max-width: 56ch;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--muted);
}

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

/* ---------- 中屏 ---------- */
@media (min-width: 760px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: end;
    gap: 44px;
  }

  .page-faq .faq-hero__aside {
    padding-bottom: 12px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1080px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    align-items: start;
  }

  .page-faq .quick-card--a { grid-column: 1 / 7; }
  .page-faq .quick-card--b { grid-column: 8 / 13; margin-top: 68px; }
  .page-faq .quick-card--c { grid-column: 1 / 5; margin-top: 4px; }
  .page-faq .quick-card--d { grid-column: 6 / 13; margin-top: 46px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .quick-card__link,
  .page-faq .qa-nav a,
  .page-faq .qa summary {
    transition: none;
  }
}