/* ============================================================
   答疑中心 / page-faq
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-step-n: 46px;
  --faq-step-gap: 18px;
}

/* ---------- 顶部：面包屑 + 首屏 ---------- */

.page-faq .faq-top {
  padding-top: clamp(20px, 3.6vw, 40px);
  padding-bottom: clamp(26px, 4.6vw, 52px);
}

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--mute-dark);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px clamp(20px, 3.6vw, 44px);
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 20px 0 0;
  padding-left: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  min-width: 120px;
}

.page-faq .faq-stat__n {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  line-height: 1.15;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-faq .faq-stat__l {
  display: block;
  margin-top: 7px;
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--mute-dark);
}

.page-faq .faq-hero__media {
  margin: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

/* ---------- 主体：索引栏 + 答案流 ---------- */

.page-faq .faq-body {
  padding-block: clamp(30px, 5.5vw, 68px);
  background:
    radial-gradient(120% 58% at 10% 0%, rgba(53, 224, 208, 0.07), transparent 62%),
    var(--ink-900);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  min-width: 0;
}

@media (min-width: 940px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(196px, 240px) minmax(0, 1fr);
  }
}

/* 侧栏索引 */

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

.page-faq .faq-rail__note {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-rail .ig-index {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  min-width: 0;
}

.page-faq .faq-rail .ig-index::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail .ig-index__link {
  flex: none;
  white-space: nowrap;
}

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

@media (min-width: 940px) {
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
  }

  .page-faq .faq-rail .ig-index {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail .ig-index__link {
    white-space: normal;
  }

  .page-faq .faq-rail__help {
    display: block;
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
  }
}

.page-faq .faq-rail__help-t {
  margin: 0;
  font-size: var(--fs-13);
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-rail__help-d {
  margin: 8px 0 14px;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--mute-dark);
}

/* 答案流 */

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

.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-flow > * + * {
  margin-top: clamp(26px, 4.2vw, 50px);
}

.page-faq .faq-panel {
  padding: clamp(22px, 3.6vw, 38px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, rgba(20, 56, 46, 0.62), rgba(7, 19, 15, 0.34));
}

.page-faq .faq-panel--paper {
  border-color: transparent;
  background: var(--paper);
  color: var(--ink-800);
}

/* ---------- 区块标题 ---------- */

.page-faq .faq-block__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__head .ig-h2 {
  margin: 0;
  max-width: 26ch;
}

.page-faq .faq-block__desc {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--mute-dark);
}

.page-faq .faq-block__desc strong {
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-faq .faq-tag--self {
  color: var(--cyan);
  border-color: var(--line-strong);
  background: rgba(53, 224, 208, 0.06);
}

.page-faq .faq-tag--help {
  color: var(--score);
  border-color: rgba(255, 154, 60, 0.42);
  background: rgba(255, 154, 60, 0.07);
}

/* ---------- 编号步骤 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-step-n) minmax(0, 1fr);
  gap: var(--faq-step-gap);
  padding-bottom: 26px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: calc(var(--faq-step-n) / 2 - 0.5px);
  top: calc(var(--faq-step-n) + 10px);
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-strong), rgba(53, 224, 208, 0));
}

.page-faq .faq-step:last-child::after {
  content: none;
}

.page-faq .faq-step__n {
  display: grid;
  place-items: center;
  width: var(--faq-step-n);
  height: var(--faq-step-n);
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(53, 224, 208, 0.06);
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-step__body {
  min-width: 0;
  padding-top: 8px;
}

.page-faq .faq-step__title {
  margin: 0;
  font-size: var(--fs-17);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 7px 0 0;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--mute-dark);
}

/* 纸面区块内的步骤配色 */

.page-faq .faq-panel--paper .faq-block__head {
  border-bottom-color: var(--line-paper);
}

.page-faq .faq-panel--paper .ig-h2 {
  color: var(--ink-800);
}

.page-faq .faq-panel--paper .faq-block__desc {
  color: var(--mute-paper);
}

.page-faq .faq-panel--paper .faq-block__desc strong {
  color: var(--score-deep);
}

.page-faq .faq-panel--paper .faq-step__n {
  color: var(--cyan-deep);
  border-color: rgba(14, 107, 99, 0.34);
  background: rgba(14, 107, 99, 0.07);
}

.page-faq .faq-panel--paper .faq-step::after {
  background: linear-gradient(180deg, rgba(14, 107, 99, 0.42), rgba(14, 107, 99, 0));
}

.page-faq .faq-panel--paper .faq-step__title {
  color: var(--ink-800);
}

.page-faq .faq-panel--paper .faq-step__text {
  color: var(--mute-paper);
}

.page-faq .faq-panel--paper .faq-tag--self {
  color: var(--cyan-deep);
  border-color: rgba(14, 107, 99, 0.3);
  background: rgba(14, 107, 99, 0.06);
}

/* ---------- 中间小结条 ---------- */

.page-faq .faq-break {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px clamp(16px, 2.6vw, 30px);
  padding: clamp(18px, 2.8vw, 26px) clamp(20px, 3vw, 32px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(118deg, rgba(53, 224, 208, 0.13), rgba(53, 224, 208, 0.02) 55%, transparent);
}

.page-faq .faq-break__label {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-break__flow {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-break__chip {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--paper);
}

.page-faq .faq-break__sep {
  font-size: var(--fs-13);
  color: var(--cyan);
}

.page-faq .faq-break__text {
  flex: 1 1 100%;
  width: 100%;
  margin: 0;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--mute-dark);
}

/* ---------- 反馈清单 ---------- */

.page-faq .faq-check {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 720px) {
  .page-faq .faq-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 30px;
  }
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-check__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
}

.page-faq .faq-check__mark::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 1px;
  background: var(--cyan);
  opacity: 0.6;
}

.page-faq .faq-check__t {
  margin: 0;
  font-size: var(--fs-15);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-check__d {
  margin: 4px 0 0;
  font-size: var(--fs-13);
  line-height: 1.78;
  color: var(--mute-dark);
}

/* ---------- 反馈区配图 ---------- */

.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mute-dark);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-folds {
  margin-top: 20px;
}

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

.page-faq .faq-fold:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-fold__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-17);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-fold__q:hover {
  color: var(--cyan);
}

.page-faq .faq-fold__sign {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
}

.page-faq .faq-fold__sign::before,
.page-faq .faq-fold__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 1px;
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease);
}

.page-faq .faq-fold__sign::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
}

.page-faq .faq-fold__sign::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
}

.page-faq .faq-fold[open] .faq-fold__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-fold__a {
  padding: 0 2px 22px;
}

.page-faq .faq-fold__a p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--mute-dark);
}

/* ---------- 收尾引导 ---------- */

.page-faq .faq-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: clamp(24px, 4vw, 42px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(140deg, rgba(53, 224, 208, 0.12), rgba(255, 154, 60, 0.07) 72%, transparent);
}

.page-faq .faq-cta__text .ig-h3 {
  margin: 10px 0 0;
  color: var(--paper);
}

.page-faq .faq-cta__text p {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--mute-dark);
}

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

@media (min-width: 800px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 窄屏收敛 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-step {
    --faq-step-n: 38px;
    --faq-step-gap: 14px;
  }

  .page-faq .faq-step__n {
    font-size: var(--fs-13);
  }

  .page-faq .faq-block__head {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-faq .faq-hero__stats {
    gap: 16px 24px;
  }

  .page-faq .faq-break__flow {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-fold__q,
  .page-faq .faq-fold__sign::before,
  .page-faq .faq-fold__sign::after {
    transition: none;
  }
}