/* ===== 答疑中心 · 页面专属样式（作用域：.page-faq） ===== */

.page-faq {
  --faq-pad: clamp(18px, 4.2vw, 40px);
  --faq-gap: clamp(16px, 3vw, 28px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏：主题声明 + 氛围图 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + clamp(26px, 6vw, 62px)) var(--faq-pad) clamp(34px, 6vw, 62px);
  background:
    radial-gradient(680px 420px at 88% 4%, rgba(232, 192, 112, .17), rgba(232, 192, 112, 0) 70%),
    radial-gradient(520px 380px at 2% 96%, rgba(52, 227, 208, .11), rgba(52, 227, 208, 0) 72%),
    linear-gradient(180deg, var(--ink) 0%, var(--velvet) 72%, var(--ink) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: 6%;
  width: min(440px, 54vw);
  height: 1px;
  transform: rotate(-30deg);
  transform-origin: right center;
  background: linear-gradient(90deg, rgba(232, 192, 112, 0), rgba(232, 192, 112, .5));
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  max-width: var(--wrap-max);
  margin: 0 auto;
  display: grid;
  gap: clamp(26px, 5vw, 46px);
}

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-size: clamp(29px, 6.2vw, 50px);
  font-weight: 900;
  letter-spacing: .1em;
  line-height: 1.26;
  color: var(--paper);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--gold);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.9;
  color: rgba(243, 240, 232, .78);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.page-faq .faq-hero__meta li {
  padding: 5px 12px;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--haze);
  border: 1px solid var(--line-soft);
  background: rgba(23, 18, 38, .7);
}

.page-faq .faq-hero__meta li:first-child {
  color: var(--cyan);
  border-color: rgba(52, 227, 208, .32);
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__frame {
  margin: 0;
  padding: 1px;
  background: var(--backdrop-gilt);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 80% 100%, 0 100%);
}

.page-faq .faq-hero__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 76%, 80% 100%, 0 100%);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: clamp(30px, 6vw, 68px) var(--faq-pad) clamp(46px, 8vw, 92px);
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

/* ---------- 左栏分组导航 ---------- */
.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-rail__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .32em;
  color: var(--gold);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: grid;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: max-content;
  padding: 10px 14px 10px 12px;
  border-left: 2px solid var(--line-soft);
  color: rgba(243, 240, 232, .72);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.5;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: border-color .24s var(--ease), color .24s var(--ease), background-color .24s var(--ease);
}

.page-faq .faq-rail__link .num {
  font-family: var(--font-num);
  font-size: 1.05rem;
  font-weight: 300;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--gold);
  color: var(--paper);
  background: linear-gradient(90deg, rgba(232, 192, 112, .12), rgba(232, 192, 112, 0));
}

.page-faq .faq-rail__links {
  display: grid;
  gap: 9px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-rail__links a {
  color: var(--haze);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  transition: color .2s var(--ease);
}

.page-faq .faq-rail__links a:hover,
.page-faq .faq-rail__links a:focus-visible {
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(32px, 6vw, 58px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 22px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-group__title {
  position: relative;
  margin: 0;
  padding-left: 18px;
  font-size: clamp(19px, 3.5vw, 26px);
  font-weight: 800;
  letter-spacing: .1em;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .22em;
  bottom: .22em;
  width: 3px;
  background: linear-gradient(180deg, var(--gold-hi), var(--gold-deep));
}

.page-faq .faq-group__index {
  font-family: var(--font-num);
  font-size: clamp(26px, 5vw, 38px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: .06em;
  color: rgba(232, 192, 112, .55);
  white-space: nowrap;
}

.page-faq .faq-group__body {
  margin-top: 4px;
  min-width: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 2.1vw, 17px);
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  transition: color .22s var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  color: var(--gold-hi);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--gold-hi);
  outline-offset: 3px;
}

.page-faq .qa__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  color: var(--gold);
  transition: color .24s var(--ease), transform .24s var(--ease);
}

.page-faq .qa[open] > .qa__q::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .qa__a {
  padding: 0 2px 24px;
  font-size: clamp(14.5px, 1.9vw, 16px);
  line-height: 1.9;
  color: rgba(243, 240, 232, .8);
}

.page-faq .qa__a::before {
  content: "";
  display: block;
  height: 2px;
  width: min(300px, 68%);
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--cyan), rgba(52, 227, 208, 0));
}

.page-faq .qa__a p {
  margin: 0 0 12px;
  max-width: 62ch;
}

.page-faq .qa__a a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(52, 227, 208, .6);
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: qa-step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 66ch;
}

.page-faq .qa__steps > li {
  counter-increment: qa-step;
  position: relative;
  padding-left: 36px;
  line-height: 1.85;
}

.page-faq .qa__steps > li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .06em;
  font-family: var(--font-num);
  font-size: 1.15rem;
  font-weight: 300;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-faq .qa__note {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--line-gold);
  background: rgba(34, 26, 56, .6);
  font-size: 14px;
  line-height: 1.8;
  color: var(--haze);
}

/* ---------- 末组：正文 + 场景图 ---------- */
.page-faq .faq-group__split {
  display: grid;
  gap: clamp(20px, 3.4vw, 32px);
  margin-top: 4px;
}

.page-faq .faq-side {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-side__frame {
  padding: 1px;
  background: linear-gradient(140deg, rgba(247, 226, 174, .8), rgba(140, 107, 37, .3));
  clip-path: polygon(0 0, 100% 0, 100% 82%, 86% 100%, 0 100%);
}

.page-faq .faq-side__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 82%, 86% 100%, 0 100%);
}

.page-faq .faq-side figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: .04em;
  color: var(--haze);
}

/* ---------- 结尾联络面板 ---------- */
.page-faq .faq-cta {
  padding: clamp(22px, 4vw, 34px) clamp(20px, 4vw, 36px) clamp(30px, 5vw, 44px);
  background:
    radial-gradient(420px 260px at 92% 0%, rgba(255, 77, 141, .16), rgba(255, 77, 141, 0) 70%),
    linear-gradient(150deg, rgba(92, 18, 48, .62), rgba(34, 26, 56, .92) 64%);
  border: 1px solid var(--line-gold);
  clip-path: polygon(0 0, 100% 0, 100% 80%, 91% 100%, 0 100%);
}

.page-faq .faq-cta__eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--cyan);
}

.page-faq .faq-cta__title {
  margin: 12px 0 0;
  font-size: clamp(20px, 3.6vw, 28px);
  font-weight: 800;
  letter-spacing: .08em;
  line-height: 1.42;
  color: var(--gold-hi);
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(243, 240, 232, .82);
}

.page-faq .faq-cta__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-hero::after {
    display: none;
  }

  .page-faq .qa__q {
    padding: 15px 0;
  }

  .page-faq .qa__a {
    padding-bottom: 20px;
  }

  .page-faq .faq-group__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-faq .faq-group__index {
    font-size: 22px;
  }
}

/* ---------- 中屏以上：左栏常驻，内容右移 ---------- */
@media (min-width: 980px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
  }

  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-rail__list {
    overflow-x: visible;
  }

  .page-faq .faq-rail__link {
    width: auto;
  }
}

/* ---------- 宽屏：末组图文并排 ---------- */
@media (min-width: 1120px) {
  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 30px);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__links a,
  .page-faq .qa__a a {
    transition: none;
  }
}