.page-faq {
  --faq-panel: rgba(16, 42, 76, 0.62);
  --faq-accent: var(--signal);
  background: var(--night);
  color: var(--warm);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 86% 0%, rgba(59, 42, 90, 0.62), transparent 62%),
    linear-gradient(180deg, var(--night) 0%, var(--space) 100%);
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  opacity: 0.22;
  pointer-events: none;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 27, 51, 0.7) 0%, rgba(11, 27, 51, 0.94) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(30px, 6vw, 84px);
}

.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: var(--fs-12);
  color: var(--ash);
  letter-spacing: 0.04em;
}

.page-faq .crumb a {
  color: var(--warm);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s, border-color 0.16s;
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-faq .crumb__sep {
  color: rgba(247, 244, 238, 0.34);
}

.page-faq .eyebrow {
  margin: 22px 0 0;
  color: var(--signal);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  font-weight: 700;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5.4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--warm);
  max-width: 20em;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 46em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(247, 244, 238, 0.8);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--fs-12);
  color: var(--warm);
  letter-spacing: 0.02em;
  background: rgba(11, 27, 51, 0.45);
}

.page-faq .faq-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
}

.page-faq .faq-chip__dot--signal { background: var(--signal); }
.page-faq .faq-chip__dot--pitch { background: var(--pitch); }
.page-faq .faq-chip__dot--gold { background: var(--gold); }

/* 主体布局 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding-block: clamp(32px, 5vw, 76px);
}

/* 主题索引 */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ash);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 8px;
  border-left: 2px solid transparent;
  color: var(--warm);
  text-decoration: none;
  font-size: var(--fs-14);
  line-height: 1.4;
  transition: border-color 0.16s, background 0.16s, color 0.16s;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--signal);
  background: rgba(247, 244, 238, 0.06);
}

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

.page-faq .faq-index__no {
  font-family: var(--font-num);
  font-size: var(--fs-12);
  color: var(--ash);
  letter-spacing: 0.08em;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--ash);
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(40px, 6vw, 76px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding-top: 18px;
  border-top: 1px solid var(--line-strong);
  margin-bottom: 4px;
}

.page-faq .faq-group__no {
  font-family: var(--font-serif);
  font-size: var(--fs-32);
  line-height: 1;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-24);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--ash);
  max-width: 46em;
}

.page-faq #q-score { --faq-accent: var(--signal); }
.page-faq #q-rank { --faq-accent: var(--pitch); }
.page-faq #q-recap { --faq-accent: var(--gold); }
.page-faq #q-ios { --faq-accent: var(--indigo); }
.page-faq #q-support { --faq-accent: var(--wine); }

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

.page-faq .qa summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 2px;
  list-style: none;
  cursor: pointer;
  transition: background 0.16s;
}

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

.page-faq .qa summary:hover {
  background: rgba(247, 244, 238, 0.04);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .qa__no {
  flex: none;
  width: 34px;
  font-family: var(--font-num);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--ash);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  line-height: 1.55;
  color: var(--warm);
  transition: color 0.16s;
}

.page-faq .qa summary:hover .qa__q {
  color: var(--signal);
}

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

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--faq-accent);
}

.page-faq .qa__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  transition: transform 0.16s ease;
}

.page-faq .qa[open] .qa__icon::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 0 24px 48px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 40em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(247, 244, 238, 0.82);
}

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

.page-faq .qa__a a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 26, 0.5);
  transition: border-color 0.16s;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--signal);
}

/* 步骤图 */
.page-faq .faq-steps {
  margin: 18px 0 4px;
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(11, 27, 51, 0.6);
  border-radius: var(--radius);
}

.page-faq .faq-steps__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-steps figcaption {
  margin-top: 10px;
  font-size: var(--fs-12);
  color: var(--ash);
  letter-spacing: 0.02em;
}

.page-faq .st-box {
  fill: rgba(16, 42, 76, 0.92);
  stroke-width: 1;
}

.page-faq .st-box--a { stroke: var(--pitch); }
.page-faq .st-box--b { stroke: var(--signal); }
.page-faq .st-badge-a { fill: var(--pitch); }
.page-faq .st-badge-b { fill: var(--signal); }

.page-faq .st-badge-txt {
  fill: var(--night);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 16px;
}

.page-faq .st-label {
  fill: var(--warm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}

.page-faq .st-sub {
  fill: var(--ash);
  font-family: var(--font-body);
  font-size: 12px;
}

.page-faq .st-arrow {
  fill: none;
  stroke: var(--signal);
  stroke-width: 2;
}

/* iOS 图 */
.page-faq .faq-ios__media {
  margin: 4px 0 16px;
  max-width: 200px;
  border: 1px solid var(--line);
  background: rgba(16, 42, 76, 0.7);
  overflow: hidden;
}

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

.page-faq .faq-ios__media .media__figcaption {
  padding: 8px 10px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--ash);
}

/* 联系方式 */
.page-faq .faq-contact {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  background: var(--faq-panel);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-16);
}

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

.page-faq .faq-contact__key {
  flex: none;
  min-width: 76px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--ash);
}

.page-faq .faq-contact__val {
  color: var(--warm);
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .copy-btn {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--warm);
  font-family: var(--font-body);
  font-size: var(--fs-12);
  cursor: pointer;
  transition: border-color 0.16s, color 0.16s, background 0.16s;
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(255, 122, 26, 0.08);
}

.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .copy-btn[data-copied="true"] {
  border-color: var(--pitch);
  color: var(--pitch);
}

/* 底部链接 */
.page-faq .faq-more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-more .btn {
  text-decoration: none;
}

/* 桌面 */
@media (min-width: 700px) {
  .page-faq .faq-ios__media {
    float: right;
    margin: 4px 0 14px 22px;
    max-width: 210px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .qa__q {
    font-size: var(--fs-18);
  }

  .page-faq .faq-hero__media {
    inset: 0 0 0 auto;
    width: 54%;
    height: 100%;
    opacity: 0.42;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 58%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 58%);
  }

  .page-faq .faq-hero__media::after {
    background: linear-gradient(90deg, rgba(11, 27, 51, 0.9) 0%, rgba(11, 27, 51, 0.2) 100%);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-body {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: 64px;
  }
}
</