/* ===== 宝威体育 问题解答 页面专属样式 ===== */
.page-faq {
  --pf-content-width: 860px;
  --pf-shadow-lg: 0 18px 40px rgba(0,0,0,.38);
  position: relative;
  min-height: 100vh;
  background-color: var(--by-deep);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--by-nearwhite);
  padding: calc(var(--by-header-offset) + 32px) 16px 48px;
}

/* 面包屑 */
.pf-crumb {
  max-width: var(--pf-content-width);
  margin: 0 auto 12px;
}
.pf-crumb__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--by-gray);
}
.pf-crumb a {
  color: var(--by-data);
  text-decoration: none;
  transition: color .25s var(--by-ease);
}
.pf-crumb a:hover {
  color: var(--by-orange);
}
.pf-crumb__sep {
  color: var(--by-line);
}

/* ===== 首屏 Hero ===== */
.pf-hero {
  max-width: var(--pf-content-width);
  margin: 0 auto 44px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--by-line);
  position: relative;
}
.pf-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 88px;
  height: 4px;
  background: var(--by-orange);
}
.pf-hero__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.pf-hero__kicker {
  display: inline-block;
  font-family: var(--by-display);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--by-gold);
  margin: 0 0 10px;
  padding: 6px 12px;
  border: 1px solid rgba(212,175,55,.45);
}
.pf-hero h1 {
  font-family: var(--by-display);
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 18px;
  color: var(--by-nearwhite);
  text-transform: uppercase;
  letter-spacing: .01em;
}
.pf-hero__lead {
  font-size: 15px;
  line-height: 1.75;
  color: var(--by-gray);
  max-width: 54ch;
  margin: 0 0 22px;
}
.pf-hero__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.pf-hero__nav-label {
  font-size: 13px;
  color: var(--by-line);
  margin-right: 4px;
}
.pf-hero__nav a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--by-nearwhite);
  background: var(--by-steel);
  border: 1px solid var(--by-line);
  text-decoration: none;
  transition: background .25s var(--by-ease), border-color .25s var(--by-ease), color .25s var(--by-ease);
}
.pf-hero__nav a:hover {
  background: var(--by-orange);
  border-color: var(--by-orange);
  color: #fff;
}
.pf-hero__img {
  align-self: center;
  max-width: 100%;
  height: auto;
  width: 148px;
  border: 1px solid rgba(255,107,53,.35);
  box-shadow: var(--pf-shadow-lg);
}

/* ===== 分类区块 ===== */
.pf-block {
  max-width: var(--pf-content-width);
  margin: 0 auto 18px;
  scroll-margin-top: calc(var(--by-header-offset) + 40px);
}
.pf-block__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--by-line);
}
.pf-block__num {
  font-family: var(--by-display);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--by-orange);
}
.pf-block__head h2 {
  font-family: var(--by-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--by-nearwhite);
  margin: 0;
}
.pf-block__tag {
  margin-left: auto;
  font-family: var(--by-display);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--by-gold);
}
.pf-block__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== 手风琴卡片 ===== */
.pf-qa {
  position: relative;
  background: linear-gradient(120deg, rgba(255,107,53,.05), transparent 40%), var(--by-steel);
  border: 2px solid var(--by-line);
  box-shadow: 0 10px 24px rgba(7,20,38,.30);
  transition: border-color .25s var(--by-ease), box-shadow .25s var(--by-ease);
}
.pf-qa::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 16px;
  width: 42px;
  height: 4px;
  background: var(--by-gold);
  z-index: 1;
  transition: width .3s var(--by-ease);
}
.pf-qa[open] {
  border-color: rgba(255,107,53,.75);
  box-shadow: var(--pf-shadow-lg);
}
.pf-qa[open]::before {
  width: calc(100% + 4px);
  background: linear-gradient(90deg, var(--by-orange), var(--by-gold));
}
.pf-qa__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.pf-qa__head::-webkit-details-marker {
  display: none;
}
.pf-qa__head::marker {
  content: "";
}
.pf-qa__num {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--by-gold);
  transform: rotate(45deg);
}
.pf-qa__num span {
  transform: rotate(-45deg);
  font-family: var(--by-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--by-deep);
}
.pf-qa__q {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--by-nearwhite);
  text-align: left;
}
.pf-qa__arrow {
  flex: 0 0 11px;
  width: 11px;
  height: 11px;
  margin-top: -5px;
  border-right: 2px solid var(--by-orange);
  border-bottom: 2px solid var(--by-orange);
  transform: rotate(45deg);
  transform-origin: center;
  transition: transform .25s var(--by-ease), margin-top .25s var(--by-ease);
}
.pf-qa[open] .pf-qa__arrow {
  transform: rotate(-135deg);
  margin-top: 5px;
}
.pf-qa__body {
  padding: 0 18px 20px 62px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--by-gray);
  animation: pf-fade .25s var(--by-ease);
}
.pf-qa[open] .pf-qa__body {
  background: linear-gradient(180deg, rgba(255,107,53,.07), transparent 42%);
}
.pf-qa__body p {
  margin: 0 0 8px;
}
.pf-qa__body p:last-child {
  margin: 0;
}
.pf-qa__body a {
  color: var(--by-orange);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.pf-qa__body a:hover {
  color: var(--by-gold);
}

@keyframes pf-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 提示条 ===== */
.pf-note {
  max-width: var(--pf-content-width);
  margin: 26px auto;
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(90deg, var(--by-dark), var(--by-steel));
  border: 1px dashed var(--by-data);
  padding: 18px 20px;
}
.pf-note__mark {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--by-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--by-deep);
  background: var(--by-orange);
}
.pf-note p {
  flex: 1;
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--by-gray);
}
.pf-note__link {
  flex: 0 0 auto;
  font-family: var(--by-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--by-nearwhite);
  background: var(--by-steel);
  border: 1px solid var(--by-line);
  padding: 8px 16px;
  text-decoration: none;
  transition: background .25s var(--by-ease), border-color .25s var(--by-ease);
}
.pf-note__link:hover {
  background: var(--by-orange);
  border-color: var(--by-orange);
}

/* ===== 底部联系引导 ===== */
.pf-cta {
  max-width: var(--pf-content-width);
  margin: 36px auto 0;
  background: linear-gradient(135deg, var(--by-dark) 0%, var(--by-steel) 70%);
  border: 2px solid var(--by-line);
  box-shadow: var(--pf-shadow-lg);
  padding: 32px 24px 0;
  text-align: center;
}
.pf-cta__text h2 {
  font-family: var(--by-display);
  font-size: 30px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--by-nearwhite);
  margin: 0 0 10px;
}
.pf-cta__text p {
  font-size: 14px;
  color: var(--by-gray);
  margin: 0 0 22px;
}
.pf-cta__btn {
  display: inline-block;
  font-family: var(--by-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #fff;
  background: var(--by-orange);
  padding: 13px 32px;
  text-decoration: none;
  border: 2px solid var(--by-orange);
  transition: background .25s var(--by-ease), color .25s var(--by-ease), box-shadow .25s var(--by-ease);
}
.pf-cta__btn:hover {
  background: transparent;
  color: var(--by-orange);
  box-shadow: 0 0 0 4px rgba(255,107,53,.18);
}
.pf-cta__img {
  display: block;
  max-width: 100%;
  height: auto;
  margin-top: 30px;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 900px) {
  .page-faq {
    padding: calc(var(--by-header-offset) + 56px) 32px 72px;
  }
  .pf-hero {
    margin-bottom: 56px;
    padding-bottom: 36px;
  }
  .pf-hero__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .pf-hero__img {
    width: 200px;
    height: 200px;
  }
  .pf-hero__lead {
    font-size: 16px;
  }
  .pf-qa__head {
    padding: 20px 22px;
  }
  .pf-qa__q {
    font-size: 16px;
  }
  .pf-qa__body {
    padding-left: 74px;
    padding-right: 24px;
    font-size: 15px;
  }
  .pf-block {
    margin-bottom: 32px;
  }
  .pf-note {
    padding: 20px 26px;
    margin: 36px auto;
  }
  .pf-cta {
    padding: 44px 36px 0;
  }
}