.page-faq {
  --faq-toc-top: calc(var(--bar-h) + 34px);
  padding-bottom: clamp(56px, 9vw, 112px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  z-index: 0;
  padding: clamp(24px, 4.6vw, 54px) 0 clamp(20px, 3.2vw, 38px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -12% 0 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(233, 239, 234, 0.055) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(0deg, rgba(233, 239, 234, 0.055) 0 1px, transparent 1px 76px);
  -webkit-mask-image: radial-gradient(120% 82% at 18% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(120% 82% at 18% 0%, #000 0%, transparent 74%);
}

.page-faq .faq-hero .display {
  font-size: clamp(30px, 5.4vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 300;
  margin: 14px 0 18px;
  max-width: 19em;
  color: var(--ink);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 38em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ink-dim);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filters__label {
  flex: none;
}

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

.page-faq .faq-chips .chip {
  white-space: nowrap;
  cursor: pointer;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 4.6vw, 44px);
  padding-top: clamp(26px, 4vw, 48px);
}

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

.page-faq .faq-toc {
  display: none;
}

@media (min-width: 920px) {
  .page-faq .faq-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 70px);
    align-items: start;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: var(--faq-toc-top);
    padding-right: 16px;
    border-right: 1px solid var(--line);
  }
}

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

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 10px 7px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--ink);
  border-left-color: var(--c-lime);
  background: rgba(184, 255, 60, 0.07);
}

.page-faq .faq-toc__list .num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-grey);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 26px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 7vw, 86px);
}

.page-faq .faq-band {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line-strong);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-band .band__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

.page-faq .faq-band .band__title {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: clamp(21px, 2.7vw, 30px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-band .band__status {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-grey);
  white-space: nowrap;
}

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

.page-faq .faq-group__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

@media (min-width: 980px) {
  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 1fr) 264px;
  }
}

/* ---------- 三步 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step {
  position: relative;
  padding: clamp(18px, 2.8vw, 26px) 0 clamp(18px, 2.8vw, 26px) clamp(0px, 2vw, 26px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(24px, 3.2vw, 32px);
  width: 0;
  height: 0;
  border-left: 6px solid var(--c-lime);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  opacity: 0.85;
}

@media (max-width: 640px) {
  .page-faq .faq-step {
    padding-left: 0;
  }
  .page-faq .faq-step::before {
    display: none;
  }
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-faq .faq-step__title {
  margin: 8px 0 8px;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-dim);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--line);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

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

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

.page-faq .faq-q__num {
  flex: 0 0 40px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-grey);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.62;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-sign {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  color: var(--ink-soft);
  transform-origin: 50% 50%;
  transition: transform 0.28s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-q__num {
  color: var(--c-lime);
}

.page-faq .faq-item[open] .faq-sign {
  transform: rotate(45deg);
  color: var(--c-lime);
}

.page-faq .faq-a {
  padding: 0 0 20px 52px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-faq .faq-a p + p {
  margin-top: 10px;
}

.page-faq .faq-item[open] .faq-a {
  animation: faqPanelIn 0.26s var(--ease);
}

@keyframes faqPanelIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-a {
    padding-left: 0;
  }
  .page-faq .faq-q__num {
    flex-basis: 34px;
    font-size: 11px;
  }
}

.page-faq .faq-more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-more .link {
  color: var(--c-cyan);
}

/* ---------- 图片 ---------- */
.page-faq .faq-portrait {
  margin: 0 auto;
  max-width: 264px;
  border: 1px solid var(--line);
  background: var(--c-night);
}

@media (min-width: 980px) {
  .page-faq .faq-portrait {
    max-width: none;
    margin: 0;
  }
}

.page-faq .faq-portrait img,
.page-faq .faq-wide img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-wide {
  margin: clamp(24px, 4vw, 38px) 0 0;
  border: 1px solid var(--line);
  background: var(--c-night);
}

.page-faq .media-frame__caption {
  padding: 10px 13px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--c-grey);
  border-top: 1px solid var(--line);
}

/* ---------- 结尾通道 ---------- */
.page-faq .faq-cta {
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--line-strong);
  background: linear-gradient(138deg, var(--c-stand) 0%, var(--c-night) 64%);
}

.page-faq .faq-cta__lead {
  margin: 0 0 22px;
  max-width: 38em;
  font-size: clamp(15.5px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-cta__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-cta__list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 15px;
  background: rgba(7, 19, 15, 0.5);
  border-left: 2px solid var(--c-lime);
}

.page-faq .faq-cta__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-cta__value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

@media (min-width: 720px) {
  .page-faq .faq-cta__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 22px;
  }
  .page-faq .faq-cta__list li:last-child {
    grid-column: 1 / -1;
  }
}

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

/* ---------- 窄屏筛选条横滑 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-filters {
    display: block;
  }

  .page-faq .faq-filters__label {
    display: block;
    margin-bottom: 10px;
  }

  .page-faq .faq-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-sign,
  .page-faq .faq-q__num,
  .page-faq .faq-toc__list a {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }
}