.page-faq {
  --faq-gap: clamp(28px, 4.4vw, 56px);
  --faq-pad-x: clamp(12px, 2vw, 20px);
  position: relative;
  padding-bottom: clamp(56px, 8vw, 112px);
  color: var(--paper);
  background:
    radial-gradient(120% 68% at 92% -12%, rgba(25, 227, 200, .10), transparent 56%),
    radial-gradient(96% 62% at -8% 104%, rgba(255, 122, 47, .08), transparent 60%),
    var(--field);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}
.page-faq .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper-dim);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(24px, 4vw, 48px);
}
.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}
.page-faq .faq-hero .eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
  padding-left: 26px;
  position: relative;
}
.page-faq .faq-hero .eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 16px;
  height: 2px;
  background: var(--orange);
  transform: translateY(-50%);
}
.page-faq .faq-hero h1 {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(38px, 8vw, 74px);
  line-height: .98;
  letter-spacing: -.03em;
  color: var(--paper);
  transform: skewX(-1.5deg);
  transform-origin: left bottom;
}
.page-faq .faq-lede {
  max-width: 40em;
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--steel);
}
.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  padding: 10px;
  max-width: 420px;
  border: 1px solid var(--line);
  background: linear-gradient(175deg, var(--blue), var(--field-2));
  box-shadow: var(--shadow-2);
}
.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 10px 10px auto auto;
  width: 46px;
  height: 3px;
  background: var(--orange);
}
.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--field-2);
}
.page-faq .faq-hero-media figcaption {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--steel);
  text-transform: uppercase;
}

/* ---------- 分类 chip ---------- */
.page-faq .faq-chips {
  margin: clamp(34px, 5vw, 60px) 0 var(--faq-gap);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 31, 43, .55), rgba(14, 31, 43, .18));
}
.page-faq .faq-chips-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding-top: 14px;
  padding-bottom: 14px;
  scrollbar-width: none;
}
.page-faq .faq-chips-inner::-webkit-scrollbar {
  display: none;
}
.page-faq .chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.page-faq .chip:hover,
.page-faq .chip:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(25, 227, 200, .08);
}

/* ---------- 区块头 ---------- */
.page-faq .faq-section {
  margin-bottom: clamp(46px, 7vw, 84px);
  scroll-margin-top: 80px;
}
.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  column-gap: 16px;
  align-items: start;
  padding-bottom: clamp(16px, 2.4vw, 24px);
  margin-bottom: clamp(8px, 1.6vw, 16px);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.02em;
}
.page-faq .faq-section-head h2 {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-faq .faq-section-head p {
  margin: 10px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  transition: background-color .2s var(--ease);
}
.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(25, 227, 200, .07), rgba(25, 227, 200, 0) 62%);
}
.page-faq .faq-item summary {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: clamp(18px, 2.3vw, 26px) var(--faq-pad-x);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .22s var(--ease);
}
.page-faq .faq-item[open] summary::before {
  transform: scaleY(1);
}
.page-faq .qa-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel);
  padding-top: 4px;
}
.page-faq .faq-item[open] .qa-no {
  color: var(--cyan);
}
.page-faq .qa-q {
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.55;
  color: var(--paper);
  transition: color .2s var(--ease);
}
.page-faq .faq-item summary:hover .qa-q,
.page-faq .faq-item[open] .qa-q {
  color: #ffffff;
}
.page-faq .qa-marker::before {
  content: "+";
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
  transition: color .2s var(--ease), transform .2s var(--ease);
}
.page-faq .faq-item[open] .qa-marker::before {
  content: "–";
  color: var(--cyan);
  transform: translateY(-1px);
}

/* 答案 */
.page-faq .qa-a {
  padding: 0 var(--faq-pad-x) clamp(20px, 2.8vw, 28px);
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--steel);
}
.page-faq .qa-a p {
  margin: 0;
}
.page-faq .qa-a p + p {
  margin-top: 12px;
}
.page-faq .qa-a strong {
  color: var(--paper);
  font-weight: 600;
}

/* 术语下划线 */
.page-faq .term {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 47, .5);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .term:hover,
.page-faq .term:focus-visible {
  color: #ffffff;
  border-bottom-color: var(--orange);
}

/* 信息图 */
.page-faq .faq-figure {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(170deg, var(--blue), var(--field-2));
  box-shadow: var(--shadow-1);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  background: var(--field-2);
}
.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(24px, 4vw, 44px);
  background: var(--paper);
  border: 1px solid rgba(11, 21, 18, .22);
  box-shadow: var(--shadow-2);
  color: var(--ink);
}
.page-faq .faq-contact-lede {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(11, 21, 18, .78);
}
.page-faq .contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-faq .contact-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(11, 21, 18, .12);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}
.page-faq .contact-list .k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(11, 21, 18, .52);
}
.page-faq .contact-list a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .contact-list a:hover,
.page-faq .contact-list a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 页脚小注 ---------- */
.page-faq .faq-footnote {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel);
}
.page-faq .faq-footnote .term {
  color: var(--cyan);
  border-bottom-color: rgba(25, 227, 200, .5);
}
.page-faq .faq-footnote .term:hover {
  color: #ffffff;
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr);
    gap: clamp(32px, 5vw, 60px);
  }
  .page-faq .faq-hero-media {
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
  .page-faq .faq-section-head {
    grid-template-columns: 72px minmax(0, 1fr);
  }
  .page-faq .faq-item summary {
    padding-left: clamp(20px, 2.6vw, 30px);
  }
  .page-faq .qa-a {
    padding-left: clamp(20px, 2.6vw, 30px);
  }
}

@media (max-width: 420px) {
  .page-faq .faq-item summary {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
  }
  .page-faq .qa-no {
    grid-column: 1 / -1;
    padding-top: 0;
  }
  .page-faq .contact-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary::before,
  .page-faq .qa-marker::before,
  .page-faq .chip,
  .page-faq .term,
  .page-faq .breadcrumb a {
    transition: none;
  }
  .page-faq .faq-hero h1 {
    transform: none;
  }
}