/* ===== 使用教程页 · page-faq ===== */
.page-faq {
  --faq-rule: 1px solid var(--line);
  --faq-panel-pad: 20px;
  padding: 36px 0 100px;
  background:
    radial-gradient(900px 400px at 86% -8%, rgba(53, 232, 166, 0.08), transparent 60%),
    radial-gradient(720px 420px at -8% 48%, rgba(124, 92, 255, 0.06), transparent 58%);
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: 900px;
  margin-top: 22px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--silver);
}

.page-faq .faq-index {
  display: flex;
  gap: 8px;
  margin-top: 30px;
  padding-bottom: 6px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  border: var(--faq-rule);
  background: var(--panel);
  color: var(--silver);
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  background: var(--moss);
  color: var(--white);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

/* ---------- 章节间隔 ---------- */
.page-faq .faq-section {
  margin-top: 72px;
}

.page-faq .faq-hero + .faq-section {
  margin-top: 54px;
}

/* ---------- 分步说明 ---------- */
.page-faq .faq-steps-layout {
  display: grid;
  gap: 36px;
  margin-top: 32px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: var(--faq-rule);
}

.page-faq .faq-step + .faq-step {
  margin-top: 4px;
}

.page-faq .faq-fold__head {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 14px;
  padding: 15px 8px 15px 4px;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

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

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

.page-faq .faq-fold__head:hover {
  background: var(--moss);
}

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

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .faq-step__label {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .faq-fold__chev {
  width: 0;
  height: 0;
  border-left: 8px solid var(--cyan);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-fold[open] > .faq-fold__head .faq-fold__chev {
  transform: rotate(90deg);
}

.page-faq .faq-fold__panel {
  padding: 0 8px 18px 4px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-fold__panel p {
  margin: 0 0 10px;
}

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

.page-faq .faq-fold__panel a {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-underline-offset: 3px;
}

.page-faq .faq-steps__figure {
  margin: 0;
}

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

/* ---------- 赛前确认 ---------- */
.page-faq .faq-lineup__figure {
  margin: 30px 0 0;
}

.page-faq .faq-lineup__grid {
  margin-top: 28px;
}

.page-faq .faq-lineup__grid .panel {
  margin-bottom: 20px;
}

.page-faq .faq-lineup__grid .panel__title {
  font-size: 19px;
}

.page-faq .faq-lineup__grid .panel p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 主客场对照 ---------- */
.page-faq .faq-h2h {
  display: grid;
  gap: 30px;
  margin-top: 32px;
}

.page-faq .faq-h2h__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: h2h;
}

.page-faq .faq-h2h__steps li {
  counter-increment: h2h;
  position: relative;
  padding: 0 0 24px 46px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-h2h__steps li::before {
  content: counter(h2h, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-h2h__steps li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 26px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-h2h__steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-h2h__steps li:last-child::after {
  display: none;
}

.page-faq .faq-h2h__board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: var(--faq-rule);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.4);
}

.page-faq .faq-h2h__col {
  background: var(--panel);
  padding: 20px 18px 24px;
}

.page-faq .faq-h2h__tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-faq .faq-h2h__col--home .faq-h2h__tag {
  color: var(--cyan);
  border-color: rgba(53, 232, 166, 0.45);
}

.page-faq .faq-h2h__col--away .faq-h2h__tag {
  color: var(--orange);
  border-color: rgba(255, 122, 47, 0.45);
}

.page-faq .faq-h2h__col h3 {
  margin: 14px 0 0;
  font-size: 18px;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-h2h__col ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-h2h__col li {
  position: relative;
  padding: 10px 0 10px 16px;
  border-top: 1px solid rgba(29, 58, 49, 0.85);
  font-size: 15px;
  line-height: 1.65;
  color: var(--silver);
}

.page-faq .faq-h2h__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-h2h__col--away li::before {
  background: var(--orange);
}

/* ---------- 版本说明 ---------- */
.page-faq .faq-version__board {
  padding: 26px var(--faq-panel-pad) 30px;
  border-width: 2px;
}

.page-faq .faq-version__board .section__title {
  margin-top: 10px;
}

.page-faq .faq-version__lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.72;
  color: var(--silver);
}

.page-faq .faq-version__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-version__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text);
}

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

.page-faq .faq-version__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 问答折叠组 ---------- */
.page-faq .faq-qa {
  margin-top: 30px;
  border-top: var(--faq-rule);
}

.page-faq .faq-fold--qa {
  border-bottom: var(--faq-rule);
}

.page-faq .faq-fold--qa .faq-fold__head {
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 16px;
  align-items: center;
  padding: 18px 10px;
}

.page-faq .faq-qa__q {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .faq-fold--qa .faq-fold__panel {
  padding: 0 10px 20px;
  max-width: 68ch;
}

/* ---------- 联系引导 ---------- */
.page-faq .faq-support {
  border-top: 2px solid var(--line);
  padding-top: 34px;
}

.page-faq .faq-support__rows {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line);
  border: var(--faq-rule);
}

.page-faq .faq-support__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel);
}

.page-faq .faq-support__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-support__value--plain {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--silver);
  word-break: normal;
}

.page-faq .faq-support__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-h2h__board {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .faq-support__row {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: center;
    gap: 20px;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-fold__head {
    grid-template-columns: 70px minmax(0, 1fr) 18px;
    padding: 18px 10px 18px 0;
  }

  .page-faq .faq-step__num {
    font-size: 48px;
  }

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

  .page-faq .faq-fold__panel {
    padding-left: 80px;
    padding-right: 40px;
  }

  .page-faq .faq-fold--qa .faq-fold__panel {
    padding-left: 10px;
    padding-right: 10px;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    padding-top: 48px;
  }

  .page-faq .faq-steps-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-steps__figure {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-h2h {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-version__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 36px;
  }

  .page-faq .faq-version__board {
    padding: 34px 36px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-fold__head,
  .page-faq .faq-fold__chev {
    transition: none;
  }
}