/* ===== 知识库页：索引卡式问答 ===== */
.page-faq {
  --qa-radius: 24px;
  --qa-pad: clamp(16px, 3.6vw, 26px);
  background: var(--ivory);
  color: var(--ink);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 6vw, 58px) 0 clamp(34px, 7vw, 68px);
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(circle at 92% 6%, rgba(242, 183, 53, .26), transparent 55%),
    radial-gradient(circle at 3% 94%, rgba(47, 110, 79, .14), transparent 50%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
}

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

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 20px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 6vw, 3.15rem);
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--ink);
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero .lead {
  margin: 20px 0 0;
  max-width: 40ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow-card);
  position: relative;
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid var(--rule);
  pointer-events: none;
}

.page-faq .faq-hero__figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* --- 筛选条 --- */
.page-faq .faq-index {
  padding: clamp(20px, 4vw, 32px) 0 4px;
}

.page-faq .faq-index .filter-bar {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  padding: 10px 12px;
  box-shadow: var(--shadow-card);
}

.page-faq .faq-index .filter-btn {
  font-family: var(--font-mono);
  font-size: var(--step-12);
  letter-spacing: .06em;
}

/* --- 章节 --- */
.page-faq .faq-block {
  padding: clamp(36px, 6vw, 68px) 0;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-block:first-of-type {
  border-top: 0;
}

.page-faq .faq-block--help {
  background:
    linear-gradient(180deg, rgba(220, 233, 223, .55), rgba(251, 246, 236, 0) 70%);
}

.page-faq .faq-block__head {
  max-width: 54ch;
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-faq .faq-block__index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-12);
  letter-spacing: .14em;
  color: var(--brown);
}

.page-faq .faq-block__index::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  flex: 0 0 auto;
}

.page-faq .faq-block h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.8vw, 2.05rem);
  line-height: 1.3;
  letter-spacing: -0.008em;
  color: var(--ink);
  margin: 14px 0 0;
}

/* --- 问答卡 --- */
.page-faq .qa-list {
  display: grid;
  gap: 14px;
}

.page-faq .qa-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--qa-radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 320ms var(--ease), box-shadow 320ms var(--ease);
}

.page-faq .qa-item[hidden] {
  display: none;
}

.page-faq .qa-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 20px var(--qa-pad);
  background: transparent;
  border: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--step-16);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  transition: color 200ms var(--ease);
}

.page-faq .qa-item__q:hover {
  color: var(--orange-deep);
}

.page-faq .qa-item__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -3px;
}

.page-faq .qa-item__num {
  color: var(--brown);
  padding-top: 2px;
  flex: 0 0 auto;
}

.page-faq .qa-item__text {
  min-width: 0;
}

.page-faq .qa-item__sign {
  position: relative;
  margin-left: auto;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

.page-faq .qa-item__sign::before,
.page-faq .qa-item__sign::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transform: translateY(-50%);
  transition: transform 300ms var(--ease), opacity 300ms var(--ease);
}

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

.page-faq .qa-item__q[aria-expanded="true"] .qa-item__sign::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .qa-item__a {
  padding: 2px 22px 24px 22px;
  border-left: 2px solid var(--leaf);
  font-size: var(--step-16);
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .qa-item__a[hidden] {
  display: none;
}

.page-faq .qa-item__a p {
  margin: 0 0 12px;
}

.page-faq .qa-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-item__a mark {
  background: var(--amber-pale);
  color: var(--ink);
  padding: 1px 5px;
  border-radius: 6px;
  font-weight: 600;
}

.page-faq .qa-steps {
  list-style: none;
  margin: 14px 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: qa-step;
}

.page-faq .qa-steps li {
  position: relative;
  counter-increment: qa-step;
  padding-left: 42px;
  line-height: 1.7;
}

.page-faq .qa-steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: var(--step-12);
  letter-spacing: .06em;
  color: var(--orange-deep);
  background: var(--amber-pale);
  border-radius: var(--radius-pill);
  padding: 1px 7px;
}

.page-faq .qa-plain {
  list-style: none;
  margin: 12px 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-plain li {
  position: relative;
  padding-left: 18px;
  line-height: 1.7;
}

.page-faq .qa-plain li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--leaf);
}

.page-faq .qa-links {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
  font-size: var(--step-14);
}

.page-faq .qa-links__label {
  color: var(--brown);
}

.page-faq .qa-links a {
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(166, 58, 13, .35);
  padding-bottom: 1px;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .qa-links a:hover {
  color: var(--ink);
  border-color: var(--ink);
}

/* --- 订阅流程配图 --- */
.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--rule);
}

.page-faq .faq-figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* --- 人工协助卡片 --- */
.page-faq .help-cards {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-faq .help-card {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: var(--ivory);
  text-decoration: none;
  transition: transform 320ms var(--ease), box-shadow 320ms var(--ease);
}

.page-faq .help-card:nth-child(2) {
  background: var(--leaf);
}

.page-faq .help-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-faq .help-card__label {
  color: var(--amber);
}

.page-faq .help-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-20);
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .help-card__desc {
  font-size: var(--step-14);
  line-height: 1.75;
  color: rgba(251, 246, 236, .78);
  max-width: 46ch;
}

/* --- 窄屏兜底 --- */
.page-faq .qa-item,
.page-faq .qa-item__q,
.page-faq .qa-item__a {
  min-width: 0;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-faq .help-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa-item__q {
    padding: 24px var(--qa-pad);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-faq .qa-item {
    grid-template-columns: minmax(250px, 0.86fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .page-faq .qa-item__q {
    padding: 26px 20px 26px var(--qa-pad);
  }

  .page-faq .qa-item__a {
    padding: 26px 28px 28px 30px;
  }

  .page-faq .faq-figure {
    margin-top: 40px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-block__head {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.4fr);
    align-items: baseline;
    gap: 0 32px;
    max-width: none;
  }

  .page-faq .faq-block__head .faq-block__index {
    grid-column: 1;
    align-self: start;
    padding-top: 8px;
  }

  .page-faq .faq-block__head h2 {
    grid-column: 2;
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item,
  .page-faq .help-card,
  .page-faq .qa-item__sign::before,
  .page-faq .qa-item__sign::after {
    transition: none;
  }

  .page-faq .help-card:hover {
    transform: none;
  }
}