/* ===== 问题解答页 · page-faq ===== */

.page-faq{
  --faq-accent: var(--summer);
  --faq-pad: clamp(48px, 8vw, 96px);
  display: block;
  background: var(--ink-950);
  color: var(--text);
}

.page-faq img{ max-width: 100%; height: auto; }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  display: flex;
  align-items: flex-end;
  min-height: clamp(400px, 60vh, 600px);
}
.page-faq .faq-hero__media{ position: absolute; inset: 0; }
.page-faq .faq-hero__media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  opacity: .38;
}
.page-faq .faq-hero__media::after{
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8,12,16,.52) 0%, rgba(8,12,16,.86) 56%, var(--ink-950) 100%),
    linear-gradient(90deg, rgba(8,12,16,.78) 0%, rgba(8,12,16,.12) 72%);
}
.page-faq .faq-hero__inner{
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: clamp(72px, 14vw, 132px) clamp(40px, 7vw, 72px);
}
.page-faq .faq-hero .breadcrumbs{ margin-bottom: 22px; }
.page-faq .faq-hero h1{
  margin: 0 0 20px;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 8.2vw, 4.3rem);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--text);
}
.page-faq .faq-hero__hl{ color: var(--summer); }
.page-faq .faq-hero .lede{
  margin: 0;
  max-width: 58ch;
  color: var(--text-soft);
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
}

/* ---------- 四栏入口 ---------- */
.page-faq .faq-index{
  background: var(--ink-950);
  padding-block: var(--faq-pad);
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-index__head{
  max-width: 640px;
  margin-bottom: clamp(28px, 5vw, 48px);
}
.page-faq .faq-index__head h2{
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--text);
}
.page-faq .faq-index__grid{
  display: grid;
  gap: 14px;
}
.page-faq .faq-index__card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.page-faq .faq-index__card::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--faq-card-accent, var(--winter));
}
.page-faq .faq-index__card--spring{ --faq-card-accent: var(--spring); }
.page-faq .faq-index__card--summer{ --faq-card-accent: var(--summer); }
.page-faq .faq-index__card--autumn{ --faq-card-accent: var(--autumn); }
.page-faq .faq-index__card--winter{ --faq-card-accent: var(--winter); }
.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible{
  background: var(--ink-700);
  border-color: var(--line-strong);
  transform: translateY(-3px);
}
.page-faq .faq-index__num{
  font-size: .8rem;
  letter-spacing: .14em;
  color: var(--faq-card-accent, var(--winter));
}
.page-faq .faq-index__card h3{
  margin: 0;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--text);
}
.page-faq .faq-index__card p{
  flex: 1;
  margin: 0;
  color: var(--slate);
  font-size: .95rem;
  line-height: 1.75;
}
.page-faq .faq-index__more{
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--faq-card-accent, var(--winter));
}
.page-faq .faq-index__more::after{
  content: " →";
  display: inline-block;
  transition: transform .3s var(--ease);
}
.page-faq .faq-index__card:hover .faq-index__more::after{ transform: translateX(4px); }

@media (min-width: 700px){
  .page-faq .faq-index__grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px){
  .page-faq .faq-index__grid{ grid-template-columns: repeat(12, 1fr); }
  .page-faq .faq-index__card:nth-child(1){ grid-column: span 7; }
  .page-faq .faq-index__card:nth-child(2){ grid-column: span 5; }
  .page-faq .faq-index__card:nth-child(3){ grid-column: span 5; }
  .page-faq .faq-index__card:nth-child(4){ grid-column: span 7; }
}

/* ---------- 答案区 ---------- */
.page-faq .faq-desk{
  background: var(--ink-800);
  padding-block: var(--faq-pad);
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-desk__inner{
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}
.page-faq .faq-answers{ min-width: 0; }

/* 左侧索引 */
.page-faq .faq-rail__title{
  margin: 0 0 14px;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--slate);
  text-transform: uppercase;
}
.page-faq .steps__tabs{
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-faq .steps__tab{
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  background: rgba(217, 227, 235, .04);
  border: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 500;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.page-faq .steps__tab .mono{
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--faq-tab-accent, var(--slate));
}
.page-faq .steps__tab[data-tab="zone"]{ --faq-tab-accent: var(--spring); }
.page-faq .steps__tab[data-tab="log"]{ --faq-tab-accent: var(--summer); }
.page-faq .steps__tab[data-tab="device"]{ --faq-tab-accent: var(--autumn); }
.page-faq .steps__tab[data-tab="version"]{ --faq-tab-accent: var(--winter); }
.page-faq .steps__tab:hover,
.page-faq .steps__tab:focus-visible{
  background: rgba(217, 227, 235, .09);
  border-color: var(--line-strong);
  color: var(--text);
}
.page-faq .steps__tab[aria-selected="true"],
.page-faq .steps__tab.is-active{
  background: var(--ink-700);
  border-color: var(--faq-tab-accent, var(--summer));
  color: var(--text);
}

@media (max-width: 959px){
  .page-faq .faq-rail__title{ display: none; }
  .page-faq .steps__tabs{
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }
  .page-faq .steps__tab{
    flex: 0 0 auto;
    width: auto;
    white-space: nowrap;
  }
}
@media (min-width: 960px){
  .page-faq .faq-desk__inner{
    grid-template-columns: 252px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail{
    position: sticky;
    top: 116px;
  }
}

/* 面板 */
.page-faq .steps__panel{ display: block; }
.page-faq .steps__panel[hidden]{ display: none; }
.page-faq .steps__panel + .steps__panel{
  margin-top: 56px;
  padding-top: 44px;
  border-top: 1px solid var(--line);
}
.page-faq .steps__panel[data-tab-panel="zone"]{ --faq-panel-accent: var(--spring); }
.page-faq .steps__panel[data-tab-panel="log"]{ --faq-panel-accent: var(--summer); }
.page-faq .steps__panel[data-tab-panel="device"]{ --faq-panel-accent: var(--autumn); }
.page-faq .steps__panel[data-tab-panel="version"]{ --faq-panel-accent: var(--winter); }

.page-faq .faq-panel-head{
  margin-bottom: 26px;
  padding-left: 18px;
  border-left: 3px solid var(--faq-panel-accent, var(--winter));
}
.page-faq .faq-panel-head__tag{
  display: block;
  margin: 0 0 10px;
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--faq-panel-accent, var(--winter));
}
.page-faq .faq-panel-head h2{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.8vw, 2.1rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--text);
}
.page-faq .faq-panel-head p{
  margin: 0;
  max-width: 62ch;
  color: var(--slate);
  font-size: .97rem;
  line-height: 1.8;
}

/* 折叠答案 */
.page-faq .accordion{ border-top: 1px solid var(--line); }
.page-faq .accordion__item{ border-bottom: 1px solid var(--line); }
.page-faq .accordion__trigger{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 18px 4px;
  background: none;
  border: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color .25s var(--ease);
}
.page-faq .accordion__trigger:hover,
.page-faq .accordion__item[data-open] .accordion__trigger{
  color: var(--faq-panel-accent, var(--summer));
}
.page-faq .faq-mark{
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}
.page-faq .faq-mark::before,
.page-faq .faq-mark::after{
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 2px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.page-faq .faq-mark::after{ transform: translate(-50%, -50%) rotate(90deg); }
.page-faq .accordion__item[data-open] .faq-mark::after{
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}
.page-faq .accordion__panel{ padding: 0 4px 22px; }
.page-faq .accordion__body p{
  margin: 0;
  max-width: 68ch;
  color: var(--text-soft);
  font-size: .97rem;
  line-height: 1.85;
}
.page-faq .accordion__body a{
  color: var(--summer);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .accordion__body a:hover{ color: var(--spring); }

/* ---------- 版本对比 ---------- */
.page-faq .ver-table{
  margin-top: 6px;
  border: 1px solid var(--line);
  background: rgba(217, 227, 235, .02);
}
.page-faq .ver-row{
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 16px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 3px solid transparent;
}
.page-faq .ver-row:last-child{ border-bottom: 0; }
.page-faq .ver-row--head{ display: none; }
.page-faq .ver-row:nth-child(2){ border-left-color: var(--summer); }
.page-faq .ver-row:nth-child(3){ border-left-color: var(--spring); }
.page-faq .ver-row:nth-child(4){ border-left-color: var(--autumn); }

.page-faq .ver-name{
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}
.page-faq .ver-name::before{
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  transform: rotate(45deg);
  background: var(--ver-dot, var(--winter));
}
.page-faq .ver-name--web{ --ver-dot: var(--summer); }
.page-faq .ver-name--desk{ --ver-dot: var(--spring); }
.page-faq .ver-name--mobile{ --ver-dot: var(--autumn); }

.page-faq .ver-cell{
  display: block;
  color: var(--text-soft);
  font-size: .92rem;
  line-height: 1.75;
}
.page-faq .ver-cell__key{
  display: block;
  margin-bottom: 2px;
  font-weight: 400;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--slate);
}

@media (min-width: 900px){
  .page-faq .ver-row{
    grid-template-columns: 1.05fr 2fr .85fr 1.3fr 1.5fr;
    gap: 18px;
    align-items: start;
    padding: 20px 18px;
  }
  .page-faq .ver-row--head{
    display: grid;
    padding-block: 12px;
    background: rgba(217, 227, 235, .05);
    font-size: .72rem;
    letter-spacing: .16em;
    color: var(--slate);
    border-left-color: transparent;
  }
  .page-faq .ver-cell__key{ display: none; }
}

.page-faq .ver-figure{
  margin: clamp(28px, 5vw, 44px) 0 0;
}
.page-faq .ver-figure img{
  display: block;
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.page-faq .ver-figure figcaption{
  margin-top: 12px;
  color: var(--slate);
  font-size: .85rem;
  line-height: 1.7;
}

.page-faq .ver-tips{
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: vertip;
  display: grid;
  gap: 12px;
}
.page-faq .ver-tips li{
  position: relative;
  padding: 16px 18px 16px 54px;
  background: var(--ink-700);
  border: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: .94rem;
  line-height: 1.78;
  counter-increment: vertip;
}
.page-faq .ver-tips li::before{
  content: counter(vertip, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--autumn);
}
.page-faq .ver-tips b{ color: var(--text); }

@media (min-width: 760px){
  .page-faq .ver-tips{ grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 页尾提示带 ---------- */
.page-faq .faq-cta{
  position: relative;
  background: var(--ink-950);
  padding-block: clamp(48px, 8vw, 88px);
}
.page-faq .faq-cta::before{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--spring) 0 25%,
    var(--summer) 25% 50%,
    var(--autumn) 50% 75%,
    var(--winter) 75% 100%);
}
.page-faq .faq-cta__inner{
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px 24px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}
.page-faq .faq-cta__text h2{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 800;
  line-height: 1.14;
  color: var(--text);
}
.page-faq .faq-cta__text p{
  margin: 0;
  max-width: 62ch;
  color: var(--slate);
  font-size: .95rem;
  line-height: 1.8;
}

@media (min-width: 800px){
  .page-faq .faq-cta__inner{
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 34px 36px;
  }
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 480px){
  .page-faq .faq-index__card{ padding: 22px 18px 18px; }
  .page-faq .faq-cta__inner{ padding: 24px 18px; }
  .page-faq .ver-row{ padding: 16px 14px; }
}

@media (prefers-reduced-motion: reduce){
  .page-faq *{
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}
<<<END>>>