/* ===== 常见问答页 · 专属样式（作用域 .page-faq） ===== */

.page-faq {
  --faq-num-w: 3rem;
  --faq-card-bg: rgba(10, 12, 18, .55);
  --faq-card-open: rgba(227, 169, 60, .06);
  --faq-hair: 1px solid var(--line);
  --faq-pad: clamp(1rem, 2.5vw, 1.5rem);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 5vw, 4rem) 0 clamp(2rem, 4vw, 3.25rem);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -20%;
  width: min(720px, 94vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, var(--gold-soft), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -46%;
  left: -24%;
  width: min(560px, 82vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, var(--violet-soft), transparent 66%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}

.page-faq .faq-hero-main .mono-label {
  display: block;
  margin: 1.25rem 0 0;
}

.page-faq .faq-hero h1 {
  margin: .4em 0 .5em;
  font-size: clamp(2.1rem, 7.5vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-hero-lead {
  margin: 0;
  max-width: 36em;
  font-size: 1.0625rem;
  line-height: 1.92;
  color: var(--paper-dim);
}

.page-faq .faq-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem clamp(1.5rem, 4vw, 3rem);
  margin: 1.75rem 0 0;
  padding: 1.25rem 0 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.page-faq .faq-fact-num {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .05em;
  color: var(--gold);
}

.page-faq .faq-fact-key {
  font-size: .8125rem;
  letter-spacing: .07em;
  color: var(--slate);
}

.page-faq .faq-hero-media {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
}

/* ---------- 分类跳转胶囊 ---------- */
.page-faq .faq-jump {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding-top: 1.25rem;
  border-top: var(--faq-hair);
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .42rem .9rem;
  border: var(--faq-hair);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--paper-dim);
  text-decoration: none;
  background: rgba(10, 12, 18, .5);
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-jump a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid var(--slate);
  transition: background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--gold);
  border-color: rgba(227, 169, 60, .55);
  background: var(--gold-soft);
}

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

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  padding: clamp(2.25rem, 5.5vw, 4rem) 0;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-section:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .5rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-section-head .mono-label {
  margin: 0;
}

.page-faq .faq-section-head .section-title {
  margin: 0 0 .35rem;
}

.page-faq .faq-section-note {
  margin: 0;
  max-width: 52em;
  font-size: .9375rem;
  line-height: 1.88;
  color: var(--slate);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.page-faq .faq-item {
  border: var(--faq-hair);
  border-radius: var(--radius-card);
  background: var(--faq-card-bg);
  overflow: hidden;
  scroll-margin-top: 7.5rem;
  transition: border-color .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(154, 166, 186, .55);
}

.page-faq .faq-item[open] {
  border-color: rgba(227, 169, 60, .48);
  background: var(--faq-card-open);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) auto;
  align-items: start;
  gap: .5rem .85rem;
  padding: 1rem var(--faq-pad);
  cursor: pointer;
  list-style: none;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.65;
  color: var(--paper);
}

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

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

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .08em;
  line-height: 1.65rem;
  color: var(--slate);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .faq-mark {
  position: relative;
  width: 1.6rem;
  height: 1.6rem;
  margin-top: .1rem;
  justify-self: end;
  border: var(--faq-hair);
  border-radius: 50%;
  transition: border-color .24s var(--ease);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold);
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .faq-mark::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-mark::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-mark {
  border-color: var(--gold);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  display: grid;
  gap: .7rem;
  padding: 0 var(--faq-pad) 1.25rem;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.92;
  color: var(--paper-dim);
}

.page-faq .faq-a strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-path {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .4rem .85rem;
  padding-top: .6rem;
  border-top: 1px dashed var(--line);
  font-size: .8125rem;
  color: var(--slate);
}

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

.page-faq .faq-path a:hover,
.page-faq .faq-path a:focus-visible {
  border-bottom-color: currentColor;
}

.page-faq .faq-permalink {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--slate) !important;
}

.page-faq .faq-permalink:hover,
.page-faq .faq-permalink:focus-visible {
  color: var(--gold) !important;
}

/* ---------- 系列清单与验资清单 ---------- */
.page-faq .faq-series,
.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-faq .faq-series li,
.page-faq .faq-checklist li {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .5rem .7rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-faq .faq-checklist li {
  padding: .5rem .75rem;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background: rgba(243, 239, 230, .03);
}

.page-faq .faq-checklist li:nth-child(1) {
  border-left-color: var(--gold);
}

.page-faq .faq-checklist li:nth-child(2) {
  border-left-color: var(--celadon);
}

.page-faq .faq-checklist li:nth-child(3) {
  border-left-color: var(--cinnabar);
}

/* ---------- 响应窗口区 ---------- */
.page-faq .faq-window-figure {
  margin: 0 0 clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-faq .faq-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: var(--faq-hair);
  border-radius: var(--radius-card);
  background: rgba(10, 12, 18, .5);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: .9375rem;
}

.page-faq .faq-table caption {
  padding: .9rem var(--faq-pad) .3rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: .9rem var(--faq-pad);
  text-align: left;
  vertical-align: middle;
  border-bottom: var(--faq-hair);
  color: var(--paper-dim);
}

.page-faq .faq-table thead th {
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .07em;
  color: var(--slate);
  background: rgba(243, 239, 230, .03);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table td strong {
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .05em;
  color: var(--paper);
}

.page-faq .faq-tier-code {
  display: inline-block;
  padding: .2rem .55rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .05em;
}

.page-faq .faq-tier-code--1 {
  color: var(--gold);
}

.page-faq .faq-tier-code--2 {
  color: var(--celadon);
}

.page-faq .faq-tier-code--3 {
  color: var(--cinnabar);
}

.page-faq .faq-list--window {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
}

.page-faq .faq-contact-card {
  padding: 1.15rem var(--faq-pad) 1.25rem;
  border: var(--faq-hair);
  border-radius: var(--radius-card);
  background: rgba(10, 12, 18, .5);
}

.page-faq .faq-contact-card .mono-label {
  margin: 0 0 .6rem;
}

.page-faq .faq-contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--gold);
  word-break: break-word;
}

.page-faq .faq-contact-value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

.page-faq .faq-contact-value a:hover,
.page-faq .faq-contact-value a:focus-visible {
  border-bottom-color: currentColor;
}

.page-faq .faq-contact-value--plain {
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: 0;
  color: var(--paper-dim);
}

.page-faq .faq-contact-note {
  margin: .65rem 0 0;
  font-size: .875rem;
  line-height: 1.85;
  color: var(--slate);
}

.page-faq .faq-reach-foot {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
  padding-top: 1.15rem;
  border-top: var(--faq-hair);
}

.page-faq .faq-reach-foot p {
  margin: 0;
  max-width: 60em;
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--slate);
}

.page-faq .faq-reach-foot a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(227, 169, 60, .35);
}

.page-faq .faq-reach-foot a:hover,
.page-faq .faq-reach-foot a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq {
    --faq-num-w: 3.4rem;
  }

  .page-faq .faq-a {
    padding-left: calc(var(--faq-num-w) + var(--faq-pad));
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-section-head {
    grid-template-columns: minmax(0, 13rem) minmax(0, 1fr);
    gap: .5rem 1.75rem;
    align-items: start;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-jump a::before,
  .page-faq .faq-item,
  .page-faq .faq-mark,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-path a,
  .page-faq .faq-contact-value a {
    transition: none;
  }
}