.page-faq {
  --faq-ink: var(--ink-900);
  --faq-card: rgba(18, 48, 85, 0.42);
  padding-bottom: 96px;
}

/* 首屏框景 */
.page-faq .faq-hero {
  position: relative;
  margin-top: 20px;
  padding: clamp(26px, 5vw, 54px) clamp(20px, 4vw, 48px);
  border: 1px solid var(--line-accent);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 110% at 100% 0%, rgba(47, 224, 212, 0.12), transparent 58%),
    linear-gradient(158deg, var(--ink-900) 0%, var(--ink-800) 58%, var(--ink-700) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: clamp(20px, 4vw, 48px);
  right: clamp(20px, 4vw, 48px);
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 1px, transparent 1px 13px);
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-hero::before { top: 0; }
.page-faq .faq-hero::after { bottom: 0; }

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(27px, 5vw, 44px);
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.95;
  color: var(--muted);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .pill--red {
  color: var(--sichuan);
  border-color: rgba(196, 56, 74, 0.55);
}

.page-faq .pill--bamboo {
  color: var(--bamboo);
  border-color: rgba(76, 143, 110, 0.55);
}

/* 目录 + 内容 分栏 */
.page-faq .faq-layout {
  display: grid;
  gap: 34px;
  margin-top: 44px;
}

.page-faq .faq-rail {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--faq-card);
  padding: 20px 18px;
}

.page-faq .faq-toc {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid var(--line-strong);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .faq-toc a:hover {
  color: var(--paper);
  background: rgba(47, 224, 212, 0.06);
}

.page-faq .faq-toc a[aria-current="true"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(47, 224, 212, 0.09);
}

.page-faq .faq-toc__n {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--sichuan);
}

.page-faq .faq-toc a[aria-current="true"] .faq-toc__n {
  color: var(--lime);
}

/* 章节通用 */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-block {
  margin-bottom: 58px;
  scroll-margin-top: calc(var(--head-h) + 26px);
}

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

.page-faq .faq-block .section-head {
  margin-bottom: 22px;
}

.page-faq .faq-lead {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.95;
  color: var(--paper);
}

.page-faq .faq-tip {
  margin: 18px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--bamboo);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(76, 143, 110, 0.09);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.page-faq .faq-tip a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--line-accent);
}

.page-faq .faq-tip a:hover {
  border-bottom-color: var(--accent);
}

/* 开始之前 */
.page-faq .faq-prep {
  display: grid;
  gap: 14px;
}

.page-faq .faq-prep__item {
  padding: 22px 22px 24px;
}

.page-faq .faq-prep__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-prep__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--muted);
}

/* 步骤 */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-figure--inner {
  margin: 22px 0 24px;
}

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

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  background: var(--faq-card);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq .faq-step:hover {
  border-color: var(--line-accent);
  border-left-color: var(--accent);
  transform: translateX(2px);
}

.page-faq .faq-step__num {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
  opacity: 0.92;
}

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

.page-faq .faq-step__body h3 {
  margin: 4px 0 8px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-path {
  display: inline-block;
  margin: 12px 0 0;
  padding: 7px 15px;
  border: 1px dashed var(--line-accent);
  border-radius: var(--r-pill);
  background: rgba(5, 11, 22, 0.62);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent);
}

/* 版本号 */
.page-faq .faq-ver {
  display: grid;
  gap: 12px;
}

.page-faq .faq-ver__seg {
  position: relative;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, var(--ink-900), var(--ink-800));
  overflow: hidden;
}

.page-faq .faq-ver__tag {
  display: inline-block;
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--sichuan);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-ver__num {
  display: block;
  font-size: clamp(30px, 4.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-faq .faq-ver__seg p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--muted);
}

/* 收藏夹 */
.page-faq .faq-fav {
  display: grid;
  gap: 12px;
  margin-bottom: 4px;
}

.page-faq .faq-fav__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(18, 48, 85, 0.34);
}

.page-faq .faq-fav__item h3 {
  margin: 2px 0 6px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-fav__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--muted);
}

.page-faq .faq-check {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--bamboo);
  border-radius: 50%;
  background: rgba(76, 143, 110, 0.16);
  color: var(--bamboo);
  font-size: 15px;
  line-height: 1;
  margin-top: 2px;
}

/* 集锦暖色区 */
.page-faq .faq-warm {
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--warm-a) 0%, var(--warm-b) 100%);
  color: var(--ink-900);
}

.page-faq .faq-warm__head .section-head__title,
.page-faq .faq-warm__head h2 {
  color: var(--ink-900);
}

.page-faq .faq-warm__head .section-head__idx {
  color: var(--ink-900);
  opacity: 0.65;
}

.page-faq .faq-warm__head .section-head__note {
  color: rgba(5, 11, 22, 0.68);
}

.page-faq .faq-warm__grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-warm__cell {
  padding: 18px 20px;
  border: 1px solid rgba(5, 11, 22, 0.16);
  border-radius: var(--radius-md);
  background: rgba(5, 11, 22, 0.09);
}

.page-faq .faq-warm__num {
  display: block;
  font-size: clamp(24px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--ink-900);
}

.page-faq .faq-warm__cell p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(5, 11, 22, 0.78);
}

.page-faq .faq-warm__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(5, 11, 22, 0.8);
}

.page-faq .faq-warm__note a {
  color: var(--ink-900);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(5, 11, 22, 0.4);
}

.page-faq .faq-warm__note a:hover {
  border-bottom-color: var(--ink-900);
}

/* 速答折叠 */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
}

.page-faq .faq-q {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--faq-card);
  overflow: hidden;
}

.page-faq .faq-q[open] {
  border-color: var(--line-accent);
}

.page-faq .faq-q__head {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}

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

.page-faq .faq-q__idx {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-q__mark {
  position: relative;
  width: 16px;
  height: 16px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 16px;
  height: 2px;
  background: var(--accent);
  transform: translateY(-50%);
  transition: transform 0.24s var(--ease);
}

.page-faq .faq-q__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-q[open] .faq-q__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-q__body {
  padding: 0 18px 18px 70px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-q__body p {
  margin: 0;
}

.page-faq .faq-q__body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--line-accent);
}

.page-faq .faq-q__body a:hover {
  border-bottom-color: var(--accent);
}

/* 平板以上 */
@media (min-width: 700px) {
  .page-faq .faq-prep {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-ver {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-warm__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 22px);
    padding: 22px 18px;
  }

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

@media (max-width: 520px) {
  .page-faq .faq-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 18px 16px 20px;
  }

  .page-faq .faq-step__num {
    font-size: 26px;
  }

  .page-faq .faq-q__head {
    grid-template-columns: 34px minmax(0, 1fr) 16px;
    gap: 10px;
    padding: 14px 14px;
    font-size: 15px;
  }

  .page-faq .faq-q__body {
    padding: 0 14px 16px 58px;
  }

  .page-faq .faq-path {
    font-size: 12px;
    word-break: break-word;
  }

  .page-faq .faq-hero__chips {
    gap: 6px;
  }
}