.page-faq {
  --faq-paper: rgba(243, 237, 224, .045);
  --faq-line: rgba(201, 162, 39, .3);
  --faq-line-soft: rgba(30, 74, 60, .95);
  --faq-track: rgba(201, 162, 39, .42);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--night);
  border-bottom: 1px solid var(--faq-line-soft);
  padding: clamp(40px, 8vw, 84px) 0 clamp(30px, 5vw, 54px);
}

.page-faq .faq-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .28;
  filter: saturate(.72) contrast(1.05);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 88% at 50% 0%, rgba(11, 43, 36, .30) 0%, rgba(4, 17, 14, .95) 74%),
    linear-gradient(180deg, transparent 60%, var(--night) 100%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-eyebrow {
  margin: 20px 0 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 76px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--cream);
  max-width: 16ch;
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 640px;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(243, 237, 224, .82);
}

.page-faq .faq-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  padding: 9px 18px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: rgba(4, 17, 14, .62);
  color: var(--cream);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, .2);
}

.page-faq .faq-badge:hover,
.page-faq .faq-badge:focus-visible {
  border-color: var(--gold-hi);
  transform: translateY(-1px);
}

.page-faq .faq-badge .mono {
  letter-spacing: .06em;
}

.page-faq .faq-badge-sep {
  color: var(--gold);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  list-style: none;
  margin: 32px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-jump a {
  color: rgba(243, 237, 224, .78);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

/* ---------- 章节基调 ---------- */
.page-faq .faq-section {
  position: relative;
  padding: clamp(48px, 8vw, 96px) 0;
}

.page-faq .faq-section--paper {
  background:
    linear-gradient(180deg, rgba(243, 237, 224, .05) 0%, rgba(243, 237, 224, .015) 100%),
    var(--night);
  border-top: 1px solid var(--faq-line-soft);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .chapter-head {
  max-width: 720px;
}

.page-faq .chapter-num {
  color: var(--sand);
  font-size: 15px;
  letter-spacing: .18em;
}

.page-faq .chapter-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--cream);
}

.page-faq .chapter-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(243, 237, 224, .74);
}

/* ---------- 五步 ---------- */
.page-faq .steps-layout {
  display: grid;
  gap: 32px;
  margin-top: 34px;
}

.page-faq .step-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step-list::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: 58px;
  width: 1px;
  background: linear-gradient(180deg, var(--faq-track) 0%, rgba(201, 162, 39, .04) 100%);
}

.page-faq .step-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0 20px;
  border-bottom: 1px dashed var(--faq-line-soft);
}

.page-faq .step-item:last-child {
  border-bottom: 0;
}

.page-faq .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--velvet);
  color: var(--gold);
  font-size: 15px;
  letter-spacing: .06em;
}

.page-faq .step-title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .step-text {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(243, 237, 224, .8);
}

.page-faq .step-note {
  margin: 8px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(192, 57, 43, .55);
  font-size: 14px;
  line-height: 1.75;
  color: var(--sand);
  transition: color .25s var(--ease);
}

.page-faq .step-item:hover .step-note,
.page-faq .step-item:focus-within .step-note {
  color: rgba(243, 237, 224, .9);
}

.page-faq .steps-figure {
  margin: 0;
}

.page-faq .steps-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-line-soft);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

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

/* ---------- 指南四章 ---------- */
.page-faq .guide-grid {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.page-faq .guide-card {
  position: relative;
  background: linear-gradient(158deg, var(--table) 0%, rgba(16, 56, 46, .5) 100%);
  border-top: 2px solid var(--gold);
  padding: 22px 20px 24px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: transform .26s var(--ease), background .26s var(--ease);
}

.page-faq .guide-card:hover {
  transform: translateY(-2px);
  background: linear-gradient(158deg, #134134 0%, rgba(16, 56, 46, .62) 100%);
}

.page-faq .guide-index {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .guide-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  color: var(--cream);
}

.page-faq .guide-text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 237, 224, .78);
}

.page-faq .guide-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .guide-points li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 237, 224, .72);
}

.page-faq .guide-points li:last-child {
  margin-bottom: 0;
}

.page-faq .guide-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 疑问分组 ---------- */
.page-faq .qa-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .qa-nav a {
  padding: 7px 16px;
  border: 1px solid var(--faq-line-soft);
  color: rgba(243, 237, 224, .8);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .qa-nav a:hover,
.page-faq .qa-nav a:focus-visible {
  border-color: var(--gold);
  color: var(--gold-hi);
}

.page-faq .qa-groups {
  margin-top: 36px;
  display: grid;
  gap: 40px;
}

.page-faq .qa-group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  color: var(--cream);
}

.page-faq .qa-group-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: var(--gold);
  transform: rotate(45deg);
  flex: none;
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .qa-item:first-of-type {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .disclosure-btn {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 18px 4px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--cream);
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .disclosure-btn:hover,
.page-faq .disclosure-btn:focus-visible {
  color: var(--gold-hi);
}

.page-faq .disclosure-sign {
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 6px;
}

.page-faq .disclosure-sign::before,
.page-faq .disclosure-sign::after {
  content: "";
  position: absolute;
  background: var(--cinnabar);
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .disclosure-sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .disclosure-sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .disclosure-btn[aria-expanded="true"] .disclosure-sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .disclosure-panel {
  padding: 0 4px 20px;
}

.page-faq .disclosure-panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 237, 224, .76);
}

/* ---------- 换版节奏 ---------- */
.page-faq .version-board {
  display: grid;
  gap: 30px;
  margin-top: 34px;
}

.page-faq .version-now {
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, rgba(201, 162, 39, .1) 0%, rgba(6, 26, 22, .8) 100%);
  padding: 24px 22px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .version-tag {
  display: inline-block;
  font-size: 22px;
  letter-spacing: .06em;
  color: var(--gold-hi);
}

.page-faq .version-tag--old {
  font-size: 17px;
  color: var(--gold);
}

.page-faq .version-now-text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(243, 237, 224, .8);
}

.page-faq .version-cycle {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 12px;
  border: 1px solid rgba(192, 57, 43, .5);
  color: var(--cream);
  font-size: 13px;
  letter-spacing: .06em;
}

.page-faq .version-track {
  list-style: none;
  margin: 0;
  padding: 4px 0 0 26px;
  border-left: 1px solid var(--faq-track);
}

.page-faq .version-item {
  position: relative;
  padding: 0 0 26px 4px;
}

.page-faq .version-item:last-child {
  padding-bottom: 0;
}

.page-faq .version-item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, .15);
}

.page-faq .version-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--cream);
}

.page-faq .version-text {
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 237, 224, .74);
}

/* ---------- 还需帮忙 ---------- */
.page-faq .help-card {
  margin-top: 30px;
  padding: 26px 22px 28px;
  border: 1px solid var(--faq-line-soft);
  background: linear-gradient(180deg, rgba(16, 56, 46, .7) 0%, rgba(6, 26, 22, .85) 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .help-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(243, 237, 224, .82);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-jump {
    gap: 12px 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .steps-layout {
    grid-template-columns: minmax(0, 1.24fr) minmax(0, .84fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .steps-figure {
    position: sticky;
    top: 28px;
  }

  .page-faq .step-item {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
    padding: 22px 0 24px;
  }

  .page-faq .step-num {
    width: 44px;
    height: 44px;
  }

  .page-faq .step-list::before {
    left: 21px;
  }

  .page-faq .qa-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px 48px;
  }

  .page-faq .version-board {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .version-now {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-lede {
    font-size: 18px;
  }

  .page-faq .help-card {
    padding: 34px 32px 36px;
  }
}

@media (min-width: 1180px) {
  .page-faq .guide-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .guide-card,
  .page-faq .faq-badge,
  .page-faq .step-note,
  .page-faq .disclosure-sign::before,
  .page-faq .disclosure-sign::after {
    transition: none;
  }

  .page-faq .guide-card:hover,
  .page-faq .faq-badge:hover {
    transform: none;
  }
}