/* ===== 使用指南 /guide/ ===== */
.page-faq{
  background:
    radial-gradient(1180px 560px at 92% -6%, rgba(47,230,208,.09), transparent 60%),
    radial-gradient(880px 520px at 0% 44%, rgba(255,138,61,.05), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--abyss) 74%, var(--ink) 100%);
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  border-bottom: 1px solid var(--grid);
  padding: clamp(22px,4vw,42px) 0 clamp(30px,5vw,58px);
}
.page-faq .faq-hero__inner{
  display: grid;
  gap: clamp(26px,4vw,52px);
  align-items: center;
}
@media (min-width: 940px){
  .page-faq .faq-hero__inner{
    grid-template-columns: minmax(0,1.08fr) minmax(0,.92fr);
  }
}
.page-faq .faq-hero__title{
  margin: .38em 0 .5em;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.022em;
  line-height: 1.1;
  font-size: clamp(29px, 5.1vw, 58px);
  color: var(--white);
}
.page-faq .faq-hero__lede{
  margin: 0 0 1.5em;
  max-width: 62ch;
  font-size: clamp(15.4px, 1.35vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .faq-hero__facts{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__facts li{
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--grid);
  background: rgba(20,29,43,.72);
  font-size: 13.5px;
  color: var(--mist);
}
.page-faq .faq-hero__facts .mono{
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-faq .pitch{
  position: relative;
  aspect-ratio: 16 / 12;
  border-radius: var(--r-lg);
  border: 1px solid var(--grid);
  overflow: hidden;
  background:
    repeating-linear-gradient(90deg, rgba(34,48,74,.5) 0 1px, transparent 1px 58px),
    repeating-linear-gradient(0deg, rgba(34,48,74,.5) 0 1px, transparent 1px 58px),
    radial-gradient(120% 100% at 78% 0%, rgba(47,230,208,.15), transparent 58%),
    linear-gradient(158deg, var(--panel) 0%, var(--abyss) 84%);
}
.page-faq .pitch::before{
  content: "";
  position: absolute;
  inset: 18% 12%;
  border-radius: 50% / 46%;
  border: 1px dashed rgba(47,230,208,.42);
}
.page-faq .pitch::after{
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  top: 50%;
  border-top: 1px dashed rgba(47,230,208,.24);
}
.page-faq .pitch__dot{
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(47,230,208,.85);
}
.page-faq .pitch__dot--a{ left: 26%; top: 34%; }
.page-faq .pitch__dot--b{
  left: 63%; top: 58%;
  background: var(--amber);
  box-shadow: 0 0 18px rgba(255,138,61,.8);
}
.page-faq .pitch__dot--c{ left: 44%; top: 73%; width: 7px; height: 7px; opacity: .72; }
.page-faq .pitch__scan{
  position: absolute;
  left: 0;
  right: 0;
  height: 46%;
  background: linear-gradient(180deg, rgba(47,230,208,0), rgba(47,230,208,.09), rgba(47,230,208,0));
  animation: faq-scan 7.5s ease-in-out infinite;
}
@keyframes faq-scan{
  0%{ top: -50%; }
  55%{ top: 104%; }
  100%{ top: 104%; }
}
@media (prefers-reduced-motion: reduce){
  .page-faq .pitch__scan{ animation: none; top: 28%; }
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-body{
  display: grid;
  gap: clamp(20px,3vw,40px);
  padding: clamp(26px,4vw,52px) 0 clamp(52px,7vw,98px);
}
@media (min-width: 1000px){
  .page-faq .faq-body{
    grid-template-columns: 236px minmax(0,1fr);
    gap: clamp(32px,4vw,64px);
  }
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-side{ align-self: start; }
@media (min-width: 1000px){
  .page-faq .faq-side{ position: sticky; top: 92px; }
}
.page-faq .faq-side__title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .28em;
  color: var(--cyan);
}
.page-faq .faq-side__list{
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.page-faq .spy-link{
  display: block;
  padding: 8px 10px 8px 16px;
  border-left: 2px solid var(--grid);
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}
.page-faq .spy-link:hover{
  color: var(--white);
  background: rgba(47,230,208,.06);
}
.page-faq .spy-link[aria-current]{
  color: var(--cyan);
  border-left-color: var(--cyan);
  font-weight: 700;
  background: rgba(47,230,208,.08);
}
.page-faq .faq-side__count{
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--mist);
}
.page-faq .faq-side__count .mono{
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--white);
}
.page-faq .faq-side__tip{
  margin: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: rgba(168,179,196,.72);
}
@media (max-width: 999px){
  .page-faq .faq-side__list{
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
  }
  .page-faq .spy-link{
    border-left: 0;
    border: 1px solid var(--grid);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 13px;
    white-space: nowrap;
  }
  .page-faq .spy-link[aria-current]{
    border-color: var(--cyan);
  }
  .page-faq .faq-side__tip{ display: none; }
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec{
  position: relative;
  padding: clamp(30px,4.4vw,56px) 0;
  border-top: 1px solid var(--grid);
}
.page-faq .faq-main > .faq-sec:first-child{
  border-top: 0;
  padding-top: 0;
}
.page-faq .faq-sec__num{
  position: absolute;
  top: clamp(4px,1.2vw,16px);
  right: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(56px, 8.6vw, 118px);
  line-height: .86;
  letter-spacing: -.04em;
  color: var(--grid);
  opacity: .55;
  pointer-events: none;
  user-select: none;
}
.page-faq .faq-sec__title{
  position: relative;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.012em;
  font-size: clamp(23px, 3.1vw, 34px);
  line-height: 1.22;
  color: var(--white);
}
.page-faq .faq-sec__sub{
  position: relative;
  margin: 0 0 clamp(18px,2.6vw,28px);
  max-width: 66ch;
  font-size: clamp(15px,1.3vw,16.4px);
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .faq-sec__sub a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47,230,208,.4);
}
.page-faq .faq-sec__sub a:hover{ border-bottom-color: var(--cyan); }

/* ---------- 图片 ---------- */
.page-faq .faq-figure{
  margin: 0 0 clamp(20px,3vw,30px);
}
.page-faq .faq-figure .media-frame{
  border-radius: var(--r-lg);
  border: 1px solid var(--grid);
  overflow: hidden;
  background: var(--panel);
}
.page-faq .faq-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-figure figcaption{
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(168,179,196,.8);
}

/* ---------- 步骤卡 ---------- */
.page-faq .steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
@media (min-width: 780px){
  .page-faq .steps{
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 20px;
  }
}
.page-faq .step{
  position: relative;
  padding: 24px 20px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--grid);
  background: linear-gradient(180deg, rgba(20,29,43,.92), rgba(10,18,32,.72));
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.page-faq .step::before{
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 34px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  opacity: .85;
}
.page-faq .step:hover,
.page-faq .step:focus-within{
  transform: translateY(-2px);
  border-color: rgba(47,230,208,.55);
  box-shadow: 0 0 0 1px rgba(47,230,208,.26), 0 22px 44px -32px rgba(47,230,208,.7);
}
.page-faq .step__num{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}
.page-faq .step__title{
  margin: 13px 0 8px;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}
.page-faq .step__text{
  margin: 0;
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .step__hint{
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--grid);
  font-size: 13.2px;
  line-height: 1.72;
  color: var(--cyan);
}
@media (hover: hover) and (min-width: 780px){
  .page-faq .step__hint{
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity .18s ease, transform .18s ease;
  }
  .page-faq .step:hover .step__hint,
  .page-faq .step:focus-within .step__hint{
    opacity: 1;
    transform: none;
  }
}
@media (min-width: 780px){
  .page-faq .step:not(:last-child)::after{
    content: "";
    position: absolute;
    top: 34px;
    left: 100%;
    width: 20px;
    border-top: 1px dashed rgba(47,230,208,.5);
  }
}

/* ---------- 控球率区间条 ---------- */
.page-faq .poss{
  margin: 0 0 clamp(20px,3vw,30px);
  padding: 18px 18px 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--grid);
  background: rgba(20,29,43,.72);
}
.page-faq .poss__bar{
  display: grid;
  grid-template-columns: repeat(5, minmax(0,1fr));
  gap: 4px;
}
.page-faq .poss__seg{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 4px;
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(10.5px, 1.05vw, 13px);
  letter-spacing: .01em;
  white-space: nowrap;
}
.page-faq .poss__seg:nth-child(1),
.page-faq .poss__seg:nth-child(5){
  background: linear-gradient(180deg, #FFB27A, var(--amber));
  color: #2A1405;
}
.page-faq .poss__seg:nth-child(2),
.page-faq .poss__seg:nth-child(4){
  background: linear-gradient(180deg, #7EF0E0, var(--cyan));
  color: #062220;
}
.page-faq .poss__seg:nth-child(3){
  background: linear-gradient(180deg, var(--cyan-deep), #177E75);
  color: var(--white);
}
@media (max-width: 640px){
  .page-faq .poss__bar{ grid-template-columns: 1fr; gap: 6px; }
  .page-faq .poss__seg{
    min-height: 38px;
    justify-content: flex-start;
    padding-left: 14px;
    white-space: normal;
  }
}
.page-faq .poss__legend{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 14px;
  font-size: 12.8px;
  color: var(--mist);
}
.page-faq .poss__key{
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.page-faq .poss__key::before{
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}
.page-faq .poss__key--warm::before{ background: var(--amber); }
.page-faq .poss__key--cyan::before{ background: var(--cyan); }

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list{
  border-top: 1px solid var(--grid);
}
.page-faq details.qa{
  border-bottom: 1px solid var(--grid);
}
.page-faq details.qa summary{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 1.5vw, 17.4px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
  transition: color .16s ease;
}
.page-faq details.qa summary::-webkit-details-marker{ display: none; }
.page-faq details.qa summary::before{
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
  transition: transform .2s ease;
}
.page-faq details.qa[open] summary::before{
  transform: rotate(45deg);
}
.page-faq details.qa summary:hover{ color: var(--cyan); }
.page-faq details.qa summary:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}
.page-faq .qa__body{
  padding: 0 4px 20px 27px;
}
.page-faq .qa__body p{
  margin: 0 0 .85em;
  max-width: 68ch;
  font-size: 15.4px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .qa__body p:last-child{ margin-bottom: 0; }
.page-faq .qa__body strong{
  color: var(--white);
  font-weight: 600;
}
.page-faq .qa__body a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47,230,208,.4);
}
.page-faq .qa__body a:hover{ border-bottom-color: var(--cyan); }
.page-faq .qa__body .mono{
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact{
  margin: 0 0 clamp(18px,2.6vw,26px);
  padding: clamp(18px,2.6vw,26px);
  border-radius: var(--r-md);
  border: 1px solid rgba(47,230,208,.28);
  background: linear-gradient(150deg, rgba(47,230,208,.09), rgba(20,29,43,.62) 62%);
}
.page-faq .faq-contact h3{
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}
.page-faq .faq-contact ul{
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}
.page-faq .faq-contact li{
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  padding-left: 16px;
  position: relative;
}
.page-faq .faq-contact li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}
.page-faq .faq-cta{
  margin: clamp(20px,3vw,30px) 0 0;
}
.page-faq .faq-cta .btn{
  text-decoration: none;
}
</main>