.page-faq {
  background: var(--ink-900);
  color: var(--light-100);
  overflow-x: hidden;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 5vw, 64px);
  border-bottom: var(--line-thin);
  background:
    radial-gradient(circle at 88% 6%, rgba(56, 225, 210, 0.15), transparent 46%),
    radial-gradient(circle at 4% 94%, rgba(255, 122, 84, 0.13), transparent 44%),
    var(--ink-900);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__copy h1 {
  margin: 10px 0 14px;
  font-size: clamp(36px, 7vw, 68px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__copy .lede {
  max-width: 46ch;
  color: var(--mist-400);
  font-size: 17px;
  line-height: 1.85;
}

.page-faq .faq-hero__visual {
  margin: 0;
  border: var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--ink-700);
}

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

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: var(--line-thin);
  border-radius: 999px;
  color: var(--light-100);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 180ms var(--ease-hall), color 180ms var(--ease-hall), background 180ms var(--ease-hall);
}

.page-faq .chip:hover,
.page-faq .chip:focus-visible {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  background: rgba(56, 225, 210, 0.08);
}

/* 三步时间轴 */
.page-faq .faq-steps {
  padding: clamp(42px, 7vw, 84px) 0 clamp(30px, 5vw, 56px);
  background: linear-gradient(180deg, rgba(16, 34, 54, 0.55), transparent 72%);
  border-bottom: var(--line-thin);
}

.page-faq .faq-head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-faq .faq-head .eyebrow {
  color: var(--neon-cyan);
  margin-bottom: 10px;
}

.page-faq .faq-head .h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-faq .faq-head__lead {
  margin: 0;
  color: var(--mist-400);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-head--tight {
  margin-bottom: 18px;
}

.page-faq .step-track {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step-card {
  position: relative;
  padding: 20px 18px 22px;
  border: var(--line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--ink-700), var(--ink-800) 78%);
  box-shadow: var(--shadow-hard);
}

.page-faq .step-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--coral), rgba(255, 122, 84, 0.18));
}

.page-faq .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 4px 10px;
  border: var(--line-thin);
  border-radius: var(--radius);
  color: var(--ink-900);
  background: var(--coral);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.page-faq .step-card:not(:first-child) .step-num {
  background: var(--ink-800);
  color: var(--amber);
  border-color: var(--steel-600);
}

.page-faq .step-title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .step-text {
  margin: 0;
  color: var(--mist-400);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-steps__foot {
  margin: 20px 0 0;
  color: var(--mist-400);
  font-size: 15px;
}

.page-faq .faq-steps__foot a {
  color: var(--neon-cyan);
  text-underline-offset: 3px;
}

/* 手册主体：左侧索引 + 右侧问答 */
.page-faq .faq-manual {
  padding: clamp(38px, 6vw, 76px) 0 clamp(10px, 2vw, 20px);
}

.page-faq .faq-manual__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-faq .faq-index {
  border: var(--line-thin);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  color: var(--mist-400);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: var(--line-thin);
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0 9px 12px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--light-100);
  font-size: 15px;
  text-decoration: none;
  transition: color 160ms var(--ease-hall), border-color 160ms var(--ease-hall), background 160ms var(--ease-hall);
}

.page-faq .faq-index__link .mono {
  color: var(--mist-400);
  font-size: 12px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--neon-cyan);
  background: rgba(56, 225, 210, 0.07);
  color: var(--neon-cyan);
}

.page-faq .faq-index__link:hover .mono,
.page-faq .faq-index__link:focus-visible .mono {
  color: var(--neon-cyan);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--line-thin);
  color: var(--mist-400);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-faq .faq-index__note strong {
  color: var(--amber);
  font-weight: 600;
}

.page-faq .faq-block {
  padding-bottom: clamp(30px, 5vw, 52px);
  margin-bottom: clamp(30px, 5vw, 52px);
  border-bottom: var(--line-thin);
}

.page-faq .faq-block:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 8px;
}

/* 手风琴 */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: var(--line-thin);
  border-radius: var(--radius);
  background: var(--ink-800);
  transition: background 180ms var(--ease-hall), box-shadow 180ms var(--ease-hall), border-color 180ms var(--ease-hall);
}

.page-faq .qa[open] {
  background: var(--ink-700);
  border-color: var(--steel-600);
  box-shadow: var(--shadow-hard);
}

.page-faq .qa__q {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .qa__q::after {
  content: "▸";
  margin-left: auto;
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: transform 220ms var(--ease-hall);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(90deg);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: -2px;
}

.page-faq .qa__idx {
  flex: none;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding-top: 2px;
}

.page-faq .qa__a {
  padding: 0 16px 16px 52px;
  color: var(--mist-400);
  font-size: 15.5px;
  line-height: 1.8;
}

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

/* 旧版本检索 */
.page-faq .version-layout {
  display: grid;
  gap: 20px;
  margin-bottom: 22px;
}

.page-faq .version-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .version-steps li {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  border-left: 3px solid var(--coral);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--ink-800);
}

.page-faq .version-steps__num {
  flex: none;
  color: var(--coral);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-faq .version-steps h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.page-faq .version-steps p {
  margin: 0;
  color: var(--mist-400);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .version-steps a {
  color: var(--neon-cyan);
  text-underline-offset: 3px;
}

.page-faq .faq-figure {
  margin: 0;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--ink-700);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: var(--line-thin);
  color: var(--mist-400);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* 版本格 */
.page-faq .ver-grid {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
}

.page-faq .ver-cell {
  padding: 12px 14px;
  border: var(--line-thin);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(46, 58, 92, 0.42), var(--ink-800));
}

.page-faq .ver-cell dt {
  margin-bottom: 6px;
  color: var(--neon-cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-faq .ver-cell dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--light-100);
}

/* 客服块 */
.page-faq .contact-layout {
  display: grid;
  gap: 16px;
}

.page-faq .faq-contact {
  padding: 20px 18px 22px;
  border: var(--line);
  border-top: 3px solid var(--amber);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--ink-700), var(--ink-800) 74%);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-contact__title {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-bottom: var(--line-thin);
}

.page-faq .faq-contact__label {
  color: var(--mist-400);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}

.page-faq .faq-contact__value {
  font-size: 15.5px;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-contact__btn {
  margin-top: 18px;
  display: inline-flex;
}

/* 延伸入口 */
.page-faq .faq-more {
  padding: clamp(34px, 6vw, 64px) 0 clamp(48px, 7vw, 88px);
  border-top: var(--line-thin);
  background: linear-gradient(180deg, rgba(10, 21, 38, 0.9), var(--ink-900));
}

.page-faq .faq-more .h2 {
  margin: 0 0 18px;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 900;
}

.page-faq .faq-more__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-more__list a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 13px 16px;
  border: var(--line-thin);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: var(--light-100);
  font-size: 15px;
  text-decoration: none;
  transition: border-color 180ms var(--ease-hall), color 180ms var(--ease-hall), transform 180ms var(--ease-hall);
}

.page-faq .faq-more__list a .mono {
  color: var(--coral);
  font-size: 12px;
}

.page-faq .faq-more__list a:hover,
.page-faq .faq-more__list a:focus-visible {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  transform: translateX(3px);
}

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

@media (min-width: 640px) {
  .page-faq .ver-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 820px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-faq .step-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .step-track::before {
    content: "";
    position: absolute;
    top: -12px;
    left: 12px;
    right: 12px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--coral) 0%, rgba(255, 122, 84, 0.5) 58%, rgba(56, 225, 210, 0.32) 100%);
  }

  .page-faq .faq-steps .step-track {
    padding-top: 4px;
  }

  .page-faq .version-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: 24px;
  }

  .page-faq .contact-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-manual__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-body {
    max-width: 72ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q::after,
  .page-faq .faq-more__list a,
  .page-faq .chip,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-more__list a:hover,
  .page-faq .faq-more__list a:focus-visible {
    transform: none;
  }
}