.page-faq {
  --faq-rail: 252px;
  --faq-gap: clamp(22px, 3.4vw, 46px);
  --faq-line: rgba(31, 94, 78, .55);
  display: block;
  background: var(--obsidian);
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background:
    radial-gradient(130% 120% at 84% 6%, rgba(224, 169, 74, .15), transparent 60%),
    linear-gradient(165deg, var(--felt) 0%, var(--ink) 48%, var(--obsidian) 100%);
  border-bottom: 1px solid var(--felt-line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: var(--faq-gap);
  padding-block: clamp(30px, 5vw, 66px) clamp(38px, 6vw, 84px);
  align-items: end;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 74px);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: #CFD8D3;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 30px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__facts b {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  color: var(--amber);
}

.page-faq .faq-hero__facts span {
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__visual {
  padding-top: 10px;
}

.page-faq .faq-hero__stack {
  display: grid;
  gap: 15px;
}

.page-faq .faq-hero__row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-faq .faq-hero__row::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--felt-line), transparent);
}

.page-faq .faq-hero__row:nth-child(1) { width: 100%; }
.page-faq .faq-hero__row:nth-child(2) { width: 88%; }
.page-faq .faq-hero__row:nth-child(3) { width: 74%; }
.page-faq .faq-hero__row:nth-child(4) { width: 60%; }
.page-faq .faq-hero__row:nth-child(5) { width: 46%; }

.page-faq .faq-hero__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .faq-hero__row--hl .faq-hero__no {
  color: var(--amber);
}

.page-faq .faq-hero__row--hl::after {
  background: linear-gradient(90deg, var(--amber), transparent);
}

@media (min-width: 940px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(220px, .9fr);
    gap: clamp(30px, 5vw, 80px);
  }
}

/* ---------- 索引区 ---------- */
.page-faq .faq-index {
  padding-block: clamp(32px, 5vw, 74px);
  background: var(--obsidian);
}

.page-faq .faq-index__grid {
  display: grid;
  gap: var(--faq-gap);
}

@media (min-width: 1000px) {
  .page-faq .faq-index__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
}

.page-faq .faq-rail__box {
  padding: 22px 18px 24px;
  background: linear-gradient(180deg, rgba(23, 69, 58, .92), rgba(16, 38, 31, .92));
  border: 1px solid var(--felt-line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

@media (min-width: 1000px) {
  .page-faq .faq-rail__box {
    position: sticky;
    top: 92px;
  }
}

.page-faq .faq-rail__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber);
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 8px;
  color: var(--white);
  font-size: 15px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--amber);
  background: rgba(224, 169, 74, .09);
  color: var(--amber);
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber-dim);
}

.page-faq .faq-rail__scale {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-rail__scale-label {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-rail__scale i {
  display: block;
  height: 3px;
  margin-top: 7px;
  background: var(--felt-line);
}

.page-faq .faq-rail__scale i:nth-of-type(1) { width: 20%; }
.page-faq .faq-rail__scale i:nth-of-type(2) { width: 34%; }
.page-faq .faq-rail__scale i:nth-of-type(3) { width: 50%; }
.page-faq .faq-rail__scale i:nth-of-type(4) { width: 66%; }
.page-faq .faq-rail__scale i:nth-of-type(5) { width: 82%; }
.page-faq .faq-rail__scale i:nth-of-type(6) { width: 100%; background: var(--amber); }

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 3vw, 40px);
}

.page-faq .media__frame {
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-faq .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 分类与问题 ---------- */
.page-faq .faq-cat {
  padding-block: clamp(24px, 3.5vw, 42px);
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 104px;
}

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

.page-faq .faq-cat__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.page-faq .faq-cat__no {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  letter-spacing: .06em;
  color: var(--amber-dim);
}

.page-faq .faq-cat__no--jade {
  color: var(--jade);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: clamp(21px, 2.6vw, 28px);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-cat__lead {
  max-width: 60ch;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 展开组 ---------- */
.page-faq .expand {
  border-bottom: 1px solid rgba(31, 94, 78, .38);
}

.page-faq .expand__head {
  position: relative;
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 17px 0 17px 16px;
  background: none;
  border: 0;
  color: var(--white);
  font-family: var(--font-body);
  font-size: clamp(15.5px, 1.6vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.page-faq .expand__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .26s var(--ease);
}

.page-faq .expand__head:hover,
.page-faq .expand__head:focus-visible,
.page-faq .expand[data-open] .expand__head {
  color: var(--amber);
}

.page-faq .expand[data-open] .expand__head::before {
  transform: scaleY(1);
}

.page-faq .expand__q {
  flex: 1 1 auto;
}

.page-faq .expand__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}

.page-faq .expand__icon::before,
.page-faq .expand__icon::after {
  content: "";
  position: absolute;
  background: var(--amber-dim);
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .expand__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .expand__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .expand[data-open] .expand__icon::before {
  background: var(--amber);
}

.page-faq .expand[data-open] .expand__icon::after {
  transform: scaleY(0);
}

.page-faq .expand__inner {
  padding: 4px 18px 20px 16px;
  background: rgba(23, 69, 58, .32);
  border-left: 3px solid rgba(224, 169, 74, .34);
  color: #D3DCD6;
  font-size: 15.5px;
  line-height: 1.78;
}

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

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

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

.page-faq .faq-steps li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}

.page-faq .faq-steps__no {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--obsidian);
  background: var(--amber);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}

/* ---------- 底部收束 ---------- */
.page-faq .faq-close {
  padding-block: clamp(40px, 6vw, 84px);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-close__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: center;
}

@media (min-width: 900px) {
  .page-faq .faq-close__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
  }
}

.page-faq .faq-close__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.15;
  color: var(--ink);
}

.page-faq .faq-close__lead {
  max-width: 52ch;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: #3A4A44;
}

.page-faq .faq-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .btn--ink {
  background: transparent;
  border: 1px solid rgba(16, 38, 31, .38);
  color: var(--ink);
}

.page-faq .btn--ink:hover,
.page-faq .btn--ink:focus-visible {
  border-color: var(--amber-dim);
  color: var(--amber-dim);
}

.page-faq .faq-close__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 26px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid rgba(16, 38, 31, .18);
}

.page-faq .faq-close__links a {
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(16, 38, 31, .3);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-close__links a:hover,
.page-faq .faq-close__links a:focus-visible {
  color: var(--amber-dim);
  border-bottom-color: var(--amber);
}

.page-faq .faq-close__figure {
  margin: 0;
}

.page-faq .faq-close__figure .media__frame {
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

@media (max-width: 999px) {
  .page-faq .faq-rail__box {
    clip-path: none;
  }

  .page-faq .faq-hero__row:nth-child(n) {
    width: 100%;
  }
}