.page-faq {
  background: var(--ink);
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 42px;
  background: linear-gradient(155deg, var(--ink) 0%, var(--teal-900) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -70px;
  width: 190px;
  height: 400px;
  background: linear-gradient(180deg, var(--gold), var(--gold-deep));
  transform: rotate(18deg);
  opacity: 0.16;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  margin-bottom: 22px;
}

.page-faq .faq-title {
  font-size: clamp(2rem, 8vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-faq .lede {
  max-width: 44ch;
  color: var(--body-dim);
  line-height: 1.85;
  margin: 0;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-faq .faq-hero__meta span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 6px 10px;
  border: 1px solid var(--line-dark);
  background: rgba(246, 241, 231, 0.04);
  color: var(--paper);
}

/* ---------- 收藏三步 ---------- */
.page-faq .faq-steps {
  background: var(--teal-900);
  color: var(--paper);
  padding: 38px 0 46px;
}

.page-faq .faq-h2 {
  font-size: clamp(1.45rem, 5vw, 2.15rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 8px 0 10px;
}

.page-faq .faq-sub {
  max-width: 48ch;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--body-dim);
}

.page-faq .faq-step-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-faq .faq-step {
  border-top: 2px solid var(--gold);
  padding-top: 14px;
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-step h3 {
  font-size: 1.02rem;
  margin: 8px 0 8px;
  line-height: 1.4;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--body-dim);
}

.page-faq .faq-figure {
  margin: 30px 0 0;
  border: 1px solid var(--line-dark);
  background: var(--ink-2);
}

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

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--grey);
  padding: 10px 12px;
  border-top: 1px solid var(--line-dark-soft);
  line-height: 1.6;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--ink);
  padding: 34px 0 56px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

.page-faq .faq-index {
  border: 1px solid var(--line-light);
  background: var(--paper-2);
  padding: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey);
}

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

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  font-size: 0.9rem;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-index__list a span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--grey);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--gold);
  background: rgba(242, 106, 27, 0.08);
}

.page-faq .faq-index__note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-index__note p {
  margin: 0 0 10px;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(14, 16, 19, 0.66);
}

.page-faq .faq-block {
  margin-bottom: 38px;
  scroll-margin-top: 96px;
}

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

.page-faq .faq-block h2 {
  font-size: clamp(1.28rem, 4.6vw, 1.68rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-block__sub {
  margin: 0 0 18px;
  font-size: 0.93rem;
  line-height: 1.85;
  color: rgba(14, 16, 19, 0.72);
}

/* 指标速查 */
.page-faq .metric-row {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.page-faq .metric-row__item {
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--speed-deep);
  background: rgba(255, 255, 255, 0.6);
  padding: 12px;
}

.page-faq .metric-row__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

.page-faq .metric-row__text {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(14, 16, 19, 0.72);
}

.page-faq .faq-figure--paper {
  border-color: var(--line-light);
  background: var(--ink-3);
  margin: 0 0 22px;
}

.page-faq .faq-figure--paper figcaption {
  border-top-color: var(--line-dark);
  color: var(--body-dim);
  background: var(--ink-2);
}

/* 格式卡 */
.page-faq .format-grid {
  display: grid;
  gap: 12px;
  margin: 0 0 22px;
}

.page-faq .format-card {
  border: 1px solid var(--line-light);
  border-top: 3px solid var(--speed-deep);
  padding: 14px;
  background: rgba(255, 255, 255, 0.5);
}

.page-faq .format-card__tag {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--speed-deep);
}

.page-faq .format-card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(14, 16, 19, 0.75);
}

/* 手风琴 */
.page-faq .qa {
  border-top: 1px solid var(--line-light);
  transition: background var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

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

.page-faq .qa summary {
  position: relative;
  display: block;
  padding: 15px 34px 15px 0;
  font-size: 0.97rem;
  font-weight: 700;
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1;
  color: var(--gold-deep);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa[open] {
  background: rgba(242, 106, 27, 0.06);
  box-shadow: inset 3px 0 0 var(--gold);
}

.page-faq .qa[open] summary {
  color: var(--gold-deep);
}

.page-faq .qa__body {
  margin: 0;
  padding: 0 16px 16px 0;
  max-width: 62ch;
  font-size: 0.93rem;
  line-height: 1.85;
  color: rgba(14, 16, 19, 0.78);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--speed-deep);
  outline-offset: 2px;
}

/* 联系面板 */
.page-faq .contact-panel {
  margin: 20px 0 0;
  padding: 16px;
  display: grid;
  gap: 12px;
  background: var(--ink-2);
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--gold);
  color: var(--paper);
}

.page-faq .contact-panel__item {
  display: grid;
  gap: 3px;
}

.page-faq .contact-panel__kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--speed);
}

.page-faq .contact-panel__value {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

/* 尾注 */
.page-faq .faq-note {
  margin: 14px 0 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: rgba(14, 16, 19, 0.66);
}

.page-faq .faq-note a {
  color: var(--gold-deep);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--speed-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 38px 0 54px;
  }

  .page-faq .faq-step-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .faq-steps {
    padding: 46px 0 54px;
  }

  .page-faq .format-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .contact-panel {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-faq .faq-body {
    padding: 44px 0 64px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-steps {
    padding: 56px 0 64px;
  }

  .page-faq .faq-block {
    margin-bottom: 48px;
  }

  .page-faq .qa summary {
    padding: 17px 40px 17px 0;
    font-size: 1rem;
  }
}

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

  .page-faq .faq-title {
    transform: none;
  }
}