.page-faq {
  --faq-panel: rgba(18, 59, 44, 0.55);
  --faq-gap: clamp(12px, 2.5vw, 20px);
}

.page-faq .faq-crumbs {
  padding-block: 14px 0;
}

/* ---------- 首屏：问题索引 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 14px;
  background: var(--ink-2);
  border-top: 3px solid var(--cyan);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero__media {
  position: relative;
  height: clamp(150px, 30vw, 280px);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  filter: saturate(0.42) contrast(1.12) brightness(0.72);
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 26, 20, 0.3) 0%, rgba(14, 42, 32, 0.62) 58%, var(--ink-2) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__body {
  position: relative;
  padding-block: clamp(18px, 3.5vw, 34px) clamp(22px, 4vw, 40px);
  border-top: 2px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(26px, 6vw, 46px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  font-weight: 800;
  color: var(--white);
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--faq-gap);
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-metric {
  border: 2px solid var(--line);
  background: var(--faq-panel);
  padding: 12px 14px;
}

.page-faq .faq-metric__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(19px, 4.2vw, 26px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-metric__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 维度索引 ---------- */
.page-faq .faq-index {
  padding-block: clamp(26px, 5vw, 48px) clamp(8px, 2vw, 16px);
}

.page-faq .faq-index__head {
  margin-bottom: 18px;
  max-width: 62ch;
}

.page-faq .faq-index__head h2 {
  margin: 0 0 8px;
  font-size: clamp(20px, 3.4vw, 26px);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-index__head p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--hard-sm);
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.page-faq .faq-tag__n {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  border-color: var(--cyan);
  background: var(--pine);
  transform: translate(-2px, -2px);
}

.page-faq .faq-tag[aria-current="true"] {
  border-color: var(--cyan);
  background: var(--pine);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  position: relative;
  padding-block: clamp(30px, 5.5vw, 62px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-section__head {
  margin-bottom: clamp(18px, 3vw, 26px);
  max-width: 68ch;
}

.page-faq .faq-section__head h2 {
  margin: 8px 0 10px;
  font-size: clamp(21px, 4vw, 32px);
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-section__head p:not(.section__kicker) {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-section--narrow .faq-section__head,
.page-faq .faq-section--narrow .faq-item {
  max-width: 780px;
}

/* ---------- 折叠问答卡 ---------- */
.page-faq .faq-item {
  margin-bottom: 12px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--hard-sm);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.page-faq .faq-item:hover {
  border-color: var(--cyan-dim);
}

.page-faq .faq-item--accent {
  border-left: 5px solid var(--cyan);
}

.page-faq .faq-item--warn {
  border-left: 5px solid var(--red);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__mark {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
}

.page-faq .faq-item__mark::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__mark::before {
  content: "\2212";
}

.page-faq .faq-item[open] > summary {
  border-bottom: 1px solid var(--line);
  color: var(--cyan);
}

.page-faq .faq-item__body {
  padding: 14px 16px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-note {
  margin-top: 12px;
  padding: 11px 13px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 162, 77, 0.08);
  font-size: 13px;
  line-height: 1.8;
}

/* ---------- 口径流程条 ---------- */
.page-faq .faq-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  counter-reset: faq-flow;
}

.page-faq .faq-flow__step {
  flex: 1 1 180px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border: 2px solid var(--line);
  background: var(--faq-panel);
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  line-height: 1.5;
}

.page-faq .faq-flow__idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--yellow);
}

/* ---------- 图与网格 ---------- */
.page-faq .faq-figure {
  margin: 0 0 18px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--line);
  box-shadow: var(--hard-sm);
  filter: saturate(0.5) contrast(1.08) brightness(0.85);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-split {
  display: grid;
  gap: 0;
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-contact {
  margin-bottom: 20px;
  padding: 18px 16px;
}

.page-faq .faq-contact .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-contact .contact-item:last-child {
  border-bottom: none;
}

.page-faq .faq-contact .contact-item__label {
  flex: none;
  min-width: 74px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-contact .contact-item__value {
  flex: 1 1 200px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-contact__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-split .faq-item {
    margin-bottom: 0;
  }

  .page-faq .faq-item > summary {
    padding: 17px 20px;
  }

  .page-faq .faq-item__body {
    padding: 15px 20px 20px 56px;
  }

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

/* ---------- 桌面：非对称双栏 ---------- */
@media (min-width: 980px) {
  .page-faq .faq-section__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: clamp(24px, 3.4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-section__layout .faq-figure {
    position: sticky;
    top: 24px;
    margin-top: 6px;
  }

  .page-faq .faq-flow__step {
    flex: 1 1 0;
  }

  .page-faq .faq-section--narrow .faq-section__head,
  .page-faq .faq-section--narrow .faq-item {
    max-width: none;
  }

  .page-faq .faq-section--narrow {
    padding-left: clamp(0px, 6vw, 96px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .faq-item {
    transition: none;
  }
}