.page-faq {
  --faq-shell-max: 1280px;
  display: block;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--faq-shell-max);
  margin-inline: auto;
  padding-inline: 20px;
}

@media (min-width: 720px) {
  .page-faq .faq-shell { padding-inline: 32px; }
}

@media (min-width: 1240px) {
  .page-faq .faq-shell { padding-inline: 48px; }
}

/* ————— 首屏 ————— */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  padding: 40px 0 56px;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
  z-index: 0;
}

.page-faq .faq-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(95% 120% at 6% 0%, rgba(15, 59, 46, .92), rgba(11, 15, 13, .72) 54%, rgba(11, 15, 13, .97) 100%),
    linear-gradient(104deg, rgba(11, 15, 13, .88) 0%, rgba(11, 15, 13, .3) 62%, rgba(11, 15, 13, .92) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 36px;
  align-items: center;
}

@media (min-width: 920px) {
  .page-faq .faq-hero { padding: 68px 0 76px; }
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(250px, .8fr);
    gap: 56px;
  }
}

.page-faq .faq-hero .crumbs {
  margin: 0 0 18px;
  color: var(--mist);
}

.page-faq .faq-hero .crumbs a {
  color: var(--lime);
  text-decoration: none;
}

.page-faq .faq-hero .crumbs a:hover {
  text-decoration: underline;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -.035em;
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 17em;
}

.page-faq .faq-hero .lede {
  max-width: 48ch;
  margin: 0;
  color: rgba(244, 247, 242, .8);
  font-size: 16px;
  line-height: 1.78;
}

.page-faq .faq-chips {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ————— 首屏环形图 ————— */

.page-faq .faq-ring {
  margin: 0;
  display: grid;
  gap: 12px;
  justify-items: center;
  padding: 22px 18px 18px;
  border-radius: var(--r-xl);
  border: 1px solid var(--hair);
  background:
    radial-gradient(120% 100% at 80% 0%, rgba(182, 242, 74, .1), transparent 60%),
    linear-gradient(158deg, rgba(20, 82, 62, .62), rgba(11, 15, 13, .72));
}

.page-faq .faq-ring__svg {
  width: min(230px, 60vw);
  height: auto;
  display: block;
}

.page-faq .faq-ring__ticks,
.page-faq .faq-ring__arc {
  fill: none;
  transform-origin: 70px 70px;
  transform: rotate(-90deg);
}

.page-faq .faq-ring__ticks {
  stroke: var(--teal);
  stroke-width: 1.6;
  stroke-dasharray: 3 31.93;
}

.page-faq .faq-ring__arc {
  stroke: var(--lime);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 245 339.29;
  transition: stroke-dasharray .5s var(--ease);
}

.page-faq .faq-ring:hover .faq-ring__arc,
.page-faq .faq-ring:focus-within .faq-ring__arc {
  stroke-dasharray: 339.29 0;
}

.page-faq .faq-ring__num {
  fill: var(--flare);
  font-family: var(--f-display);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -.02em;
  text-anchor: middle;
}

.page-faq .faq-ring__unit {
  fill: var(--mist);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-anchor: middle;
}

.page-faq .faq-ring__caption {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper);
  text-align: center;
}

.page-faq .faq-ring__more {
  margin: 0;
  padding-top: 10px;
  width: 100%;
  border-top: 1px dashed rgba(14, 107, 99, .55);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  text-align: center;
  opacity: .6;
  transition: opacity .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-ring:hover .faq-ring__more,
.page-faq .faq-ring:focus-within .faq-ring__more {
  opacity: 1;
  color: var(--lime);
}

/* ————— 主体：索引 + 问答 ————— */

.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-top: 32px;
  padding-bottom: 64px;
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
    padding-bottom: 96px;
  }
}

.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 6;
  margin-inline: -20px;
  padding: 12px 20px 14px;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  background: rgba(11, 15, 13, .94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-index__eyebrow {
  display: none;
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 4px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--halo);
  border-color: rgba(182, 242, 74, .45);
  color: var(--lime);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-faq .faq-index__cta {
  display: none;
}

@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar) + 28px);
    margin-inline: 0;
    padding: 24px 20px 22px;
    border: 1px solid var(--hair);
    border-radius: var(--r-lg);
    background:
      radial-gradient(130% 80% at 100% 0%, rgba(182, 242, 74, .09), transparent 58%),
      linear-gradient(180deg, rgba(20, 82, 62, .48), rgba(11, 15, 13, .35));
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .page-faq .faq-index__eyebrow { display: block; }

  .page-faq .faq-index__list {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    gap: 3px;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 11px 12px;
  }

  .page-faq .faq-index__cta {
    display: inline-flex;
    width: 100%;
    justify-content: center;
    margin-top: 18px;
  }
}

/* ————— 问答分组 ————— */

.page-faq .faq-groups {
  min-width: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-group {
  position: relative;
  padding: 34px 0 44px;
  border-top: 1px solid var(--hair);
  scroll-margin-top: 96px;
}

.page-faq .faq-groups > .faq-group:first-child {
  border-top: 0;
  padding-top: 4px;
}

@media (min-width: 960px) {
  .page-faq .faq-group {
    padding: 44px 0 56px;
    scroll-margin-top: calc(var(--bar) + 40px);
  }

  .page-faq .faq-groups > .faq-group:first-child {
    padding-top: 0;
  }
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 16px;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding-top: 7px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--lime);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.14;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-faq .faq-group__sub {
  margin: 7px 0 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .09em;
  color: var(--mist);
}

/* ————— 手风琴 ————— */

.page-faq .faq-qlist {
  margin-top: 6px;
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-qlist > .faq-q:first-child {
  border-top: 1px solid var(--hair);
}

.page-faq .faq-q > summary {
  position: relative;
  display: block;
  list-style: none;
  cursor: pointer;
  padding: 16px 42px 16px 20px;
  font-family: var(--f-head);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--paper);
  transition: color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-q > summary::-webkit-details-marker { display: none; }
.page-faq .faq-q > summary::marker { content: ""; }

.page-faq .faq-q > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 8px;
  transform: translateY(-50%);
  border-radius: 2px;
  background: var(--teal);
  transition: height .26s var(--ease), background .26s var(--ease);
}

.page-faq .faq-q > summary::after {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lime);
  transition: transform .26s var(--ease);
}

.page-faq .faq-q > summary::after { content: "+"; }
.page-faq .faq-q[open] > summary::after { content: "−"; }

.page-faq .faq-q > summary:hover {
  color: var(--lime);
  background: linear-gradient(90deg, var(--halo), transparent 70%);
}

.page-faq .faq-q > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-faq .faq-q[open] > summary::before {
  height: 24px;
  background: var(--lime);
}

.page-faq .faq-q .fold__body {
  padding: 0 42px 20px 20px;
}

.page-faq .faq-q .fold__body p {
  margin: 0;
  color: rgba(244, 247, 242, .8);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-q .fold__body p + p {
  margin-top: 10px;
}

.page-faq .faq-q .fold__body a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 242, 74, .4);
}

.page-faq .faq-q .fold__body a:hover {
  border-bottom-color: var(--lime);
}

/* ————— 操作配图 ————— */

.page-faq .faq-figure {
  margin: 28px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hair);
  background: var(--ink-2);
}

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

.page-faq .faq-figure figcaption {
  padding: 11px 16px 13px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--hair);
}

@media (min-width: 900px) {
  .page-faq .faq-figure {
    max-width: 62%;
    margin-left: auto;
    margin-top: 32px;
  }
}

/* ————— 版本号解读 ————— */

.page-faq .faq-ver {
  margin: 4px 0 26px;
  padding: 20px 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(14, 107, 99, .6);
  background:
    radial-gradient(120% 130% at 0% 0%, rgba(14, 107, 99, .3), transparent 62%),
    rgba(7, 16, 12, .7);
}

.page-faq .faq-ver__label {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-ver__code {
  margin: 10px 0 18px;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(26px, 6vw, 40px);
  letter-spacing: .04em;
  color: var(--flare);
  line-height: 1;
  word-break: break-all;
}

.page-faq .faq-ver__keys {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

@media (min-width: 640px) {
  .page-faq .faq-ver__keys {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-faq .faq-ver__keys li {
  display: grid;
  gap: 5px;
  padding-left: 11px;
  border-left: 2px solid var(--teal);
}

.page-faq .faq-ver__keys b {
  font-family: var(--f-mono);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--lime);
}

.page-faq .faq-ver__keys span {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ————— 收尾联系 ————— */

.page-faq .faq-closing {
  position: relative;
  overflow: hidden;
  padding: 48px 0 64px;
  border-top: 1px solid var(--hair);
  background:
    radial-gradient(110% 130% at 96% 4%, rgba(182, 242, 74, .16), transparent 58%),
    linear-gradient(162deg, rgba(15, 59, 46, .9), rgba(11, 15, 13, .96) 72%);
}

@media (min-width: 960px) {
  .page-faq .faq-closing { padding: 72px 0 96px; }
}

.page-faq .faq-closing__inner {
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.page-faq .faq-closing .eyebrow {
  margin: 0;
}

.page-faq .faq-closing h2 {
  margin: 0;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-faq .faq-closing__lede {
  margin: 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 247, 242, .78);
}

.page-faq .faq-lines {
  display: grid;
  gap: 10px;
  margin: 12px 0 8px;
}

@media (min-width: 760px) {
  .page-faq .faq-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: 12px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--hair);
  background: rgba(11, 15, 13, .58);
}

.page-faq .faq-line__key {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-line__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--f-mono);
  font-size: 14.5px;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-closing__btn {
  justify-self: start;
  margin-top: 6px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ring__arc,
  .page-faq .faq-ring__more,
  .page-faq .faq-q > summary,
  .page-faq .faq-q > summary::before,
  .page-faq .faq-q > summary::after {
    transition: none;
  }
}