.page-faq {
  display: block;
  background: var(--bg);
  color: var(--ink-body);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: 18px;
}
.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-faq .breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--hair);
}
.page-faq .breadcrumb__link {
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.16s var(--ease);
}
.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--brand);
}

/* ---------- 索引头 ---------- */
.page-faq .faq-hero {
  padding: clamp(28px, 5vw, 58px) 0 clamp(30px, 5vw, 54px);
  border-bottom: 1px solid var(--hair);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}
.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 5.6vw, 60px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-faq .faq-hero__sub {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-2);
}
.page-faq .faq-hero__meta {
  display: grid;
  gap: 10px;
  align-content: start;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.page-faq .faq-hero__meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  line-height: 1.6;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: end;
  }
  .page-faq .faq-hero__meta {
    padding-top: 0;
    padding-left: 20px;
    border-top: 0;
    border-left: 1px solid var(--hair);
  }
}

/* ---------- 手风琴区 ---------- */
.page-faq .faq-steps {
  padding: clamp(32px, 5vw, 58px) 0 clamp(10px, 2vw, 20px);
}
.page-faq .faq-steps__grid {
  row-gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 32px);
}
.page-faq .faq-acc-list {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq h2 {
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}

.page-faq .acc {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: 3px;
  scroll-margin-top: calc(var(--header-h) + 18px);
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease);
}
.page-faq .acc:hover {
  border-color: rgba(0, 229, 160, 0.45);
  transform: translateY(-2px);
}
.page-faq .acc[open] {
  border-color: rgba(0, 229, 160, 0.42);
}

.page-faq .acc__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}
.page-faq .acc__head::-webkit-details-marker {
  display: none;
}
.page-faq .acc__head:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.page-faq .acc__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brand);
  border: 1px solid var(--hair);
  border-radius: 2px;
  padding: 3px 7px;
  background: rgba(0, 229, 160, 0.06);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .acc:hover .acc__num,
.page-faq .acc[open] .acc__num {
  color: var(--accent);
  border-color: rgba(255, 107, 53, 0.42);
}
.page-faq .acc__title {
  font-family: var(--font-head);
  font-size: clamp(16px, 2.2vw, 21px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}
.page-faq .acc__chev {
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 1.6px solid var(--brand);
  border-bottom: 1.6px solid var(--brand);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.18s var(--ease);
}
.page-faq .acc[open] .acc__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-faq .acc__body {
  padding: 16px 18px 22px;
  border-top: 1px solid var(--hair);
}

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .steps__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
.page-faq .steps__idx {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brand);
  padding-top: 4px;
}
.page-faq .steps__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-body);
}
.page-faq .steps__item p strong {
  color: var(--ink);
}

/* ---------- 批次号示例 ---------- */
.page-faq .batch-sample {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 18px 0 0;
  padding: 12px 14px;
  background: var(--mist);
  border: 1px solid rgba(0, 229, 160, 0.28);
  border-left: 3px solid var(--brand);
  border-radius: 2px;
}
.page-faq .batch-sample__label {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.page-faq .batch-sample__code {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--brand);
}
.page-faq .batch-sample__hint {
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 教程之外的情况 ---------- */
.page-faq .faq-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-body);
}
.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--brand);
}
.page-faq .faq-list strong {
  color: var(--ink);
  font-weight: 600;
}
.page-faq .acc__body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-2);
}
.page-faq .acc__body a {
  color: var(--brand);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 160, 0.4);
}
.page-faq .acc__body a:hover {
  color: var(--accent);
  border-bottom-color: rgba(255, 107, 53, 0.5);
}

/* ---------- 侧栏坐标索引 ---------- */
.page-faq .rail {
  align-self: start;
}
.page-faq .rail__title {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.page-faq .rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}
.page-faq .rail__item {
  border-bottom: 1px solid var(--hair);
}
.page-faq .rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 2px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.16s var(--ease), padding-left 0.16s var(--ease);
}
.page-faq .rail__link .num {
  color: var(--brand);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.page-faq .rail__link:hover,
.page-faq .rail__link:focus-visible,
.page-faq .rail__link[aria-current] {
  color: var(--brand);
  padding-left: 6px;
}
.page-faq .rail__meta {
  margin-top: 20px;
  display: grid;
  gap: 8px;
}
.page-faq .rail__meta-title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.page-faq .rail__meta-link {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-2);
  text-decoration: none;
  border-left: 1px solid var(--hair);
  padding-left: 12px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .rail__meta-link:hover,
.page-faq .rail__meta-link:focus-visible {
  color: var(--brand);
  border-left-color: var(--brand);
}

@media (min-width: 1000px) {
  .page-faq .rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }
}

/* ---------- 界面图区 ---------- */
.page-faq .faq-shots {
  padding: clamp(34px, 5vw, 62px) 0 clamp(24px, 4vw, 44px);
  border-top: 1px solid var(--hair);
}
.page-faq .faq-shots__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(20px, 3vw, 30px);
}
.page-faq .faq-shot {
  margin: 0;
}
.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-shot figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}
.page-faq .faq-shot__idx {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--brand);
  margin-right: 8px;
}

@media (min-width: 820px) {
  .page-faq .faq-shots__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
  .page-faq .faq-shot--tall {
    margin-top: clamp(20px, 3.4vw, 48px);
  }
}

/* ---------- 求助条 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3.4vw, 40px);
  background:
    linear-gradient(140deg, rgba(0, 229, 160, 0.09), rgba(11, 14, 20, 0) 62%),
    var(--panel);
  border: 1px solid rgba(0, 229, 160, 0.34);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}
.page-faq .faq-help__body {
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-faq .faq-help__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-2);
  max-width: 46ch;
}
.page-faq .faq-help__body .btn {
  justify-self: start;
  margin-top: 4px;
}
.page-faq .faq-help__contacts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-faq .faq-help__contacts .contact-list__item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--hair);
  font-size: 14px;
}
.page-faq .faq-help__contacts .contact-list__label {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.page-faq .faq-help__contacts .contact-list__value {
  color: var(--ink);
  word-break: break-all;
  line-height: 1.6;
}

@media (min-width: 860px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: center;
  }
}

.page-faq .faq-help__more {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}
.page-faq .faq-help__more a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  margin: 0 3px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-faq .faq-help__more a:hover,
.page-faq .faq-help__more a:focus-visible {
  color: var(--brand);
  border-bottom-color: var(--brand);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .acc,
  .page-faq .acc__chev,
  .page-faq .acc__num,
  .page-faq .rail__link,
  .page-faq .rail__meta-link,
  .page-faq .breadcrumb__link,
  .page-faq .faq-help__more a {
    transition: none;
  }
  .page-faq .acc:hover {
    transform: none;
  }
}