.page-faq {
  --faq-gap: 56px;
  display: block;
  padding-bottom: 96px;
}

/* ---------- 容器与面包屑 ---------- */
.page-faq .faq-shell {
  padding-top: 28px;
}

.page-faq .faq-crumbs {
  margin-bottom: 28px;
}

.page-faq .faq-crumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-faq .faq-crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 32px;
  padding: 28px 0 8px;
}

.page-faq .faq-hero__text h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: .06em;
  line-height: .98;
  font-size: clamp(34px, 8vw, 68px);
  text-transform: uppercase;
  color: var(--silver);
  margin: 14px 0 18px;
}

.page-faq .faq-hero__lede {
  max-width: 58ch;
  color: var(--mist);
  font-size: 17px;
  line-height: 1.75;
  margin: 0 0 26px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 版本切换器 */
.page-faq .faq-hero__gauge {
  position: relative;
  background: linear-gradient(150deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  padding: 22px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-faq .faq-hero__gauge::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
  opacity: .8;
}

.page-faq .faq-hero__gauge-label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .ver-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .ver-switch__btn {
  flex: 1;
  appearance: none;
  background: rgba(124, 141, 181, .1);
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .08em;
  padding: 9px 4px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .ver-switch__btn:hover,
.page-faq .ver-switch__btn:focus-visible {
  color: var(--silver);
  border-color: var(--line-strong);
}

.page-faq .ver-switch__btn.is-active {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-faq .ver-panel__title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--silver);
  margin: 0 0 10px;
}

.page-faq .ver-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--mist);
}

.page-faq .ver-panel__list li {
  padding-left: 16px;
  position: relative;
}

.page-faq .ver-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .ver-panel .data-num {
  color: var(--cyan);
  font-size: 16px;
}

/* ---------- 文档路径 ---------- */
.page-faq .faq-docs {
  padding-top: var(--faq-gap);
}

.page-faq .faq-docs h2,
.page-faq .faq-qa h2,
.page-faq .faq-support h2 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  line-height: 1.02;
  font-size: clamp(26px, 5.4vw, 42px);
  color: var(--silver);
  margin: 12px 0 16px;
}

.page-faq .faq-docs__intro {
  max-width: 62ch;
  color: var(--mist);
  font-size: 16.5px;
  line-height: 1.75;
  margin: 0 0 34px;
}

.page-faq .doc-path {
  position: relative;
}

.page-faq .doc-path__svg {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: -22px;
  overflow: visible;
}

.page-faq .doc-path__line {
  opacity: .55;
}

.page-faq .doc-path__line--alt {
  opacity: .3;
}

.page-faq .doc-path__node {
  fill: var(--ink);
  stroke-width: 3;
}

.page-faq .doc-path__node--cyan { stroke: var(--cyan); }
.page-faq .doc-path__node--lava { stroke: var(--lava); }
.page-faq .doc-path__node--violet { stroke: var(--violet); }

.page-faq .doc-path__label {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .1em;
  fill: var(--mist);
}

.page-faq .doc-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .doc-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 26px 22px 24px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-faq .doc-card:hover {
  transform: translateY(-3px);
}

.page-faq .doc-card--cyan { border-color: rgba(40, 240, 210, .42); }
.page-faq .doc-card--lava { border-color: rgba(255, 107, 53, .42); }
.page-faq .doc-card--violet { border-color: rgba(139, 92, 255, .42); }

.page-faq .doc-card__step {
  display: block;
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--mist);
  margin-bottom: 10px;
}

.page-faq .doc-card h3 {
  font-family: var(--font-display);
  font-size: 23px;
  letter-spacing: .05em;
  color: var(--silver);
  margin: 0 0 10px;
}

.page-faq .doc-card p {
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.7;
  margin: 0 0 16px;
}

.page-faq .doc-card__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .doc-card--cyan .doc-card__link:hover,
.page-faq .doc-card--cyan .doc-card__link:focus-visible { color: var(--cyan); border-color: var(--cyan); }
.page-faq .doc-card--lava .doc-card__link:hover,
.page-faq .doc-card--lava .doc-card__link:focus-visible { color: var(--lava); border-color: var(--lava); }
.page-faq .doc-card--violet .doc-card__link:hover,
.page-faq .doc-card--violet .doc-card__link:focus-visible { color: var(--violet); border-color: var(--violet); }

.page-faq .faq-fig {
  margin: 40px 0 0;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  padding-top: var(--faq-gap);
}

.page-faq .qa-list {
  display: grid;
  gap: 12px;
}

.page-faq .qa {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: var(--panel);
}

.page-faq #qa-subscribe .qa[open] { border-left-color: var(--lava); }
.page-faq #qa-tools .qa[open] { border-left-color: var(--violet); }
.page-faq #qa-export .qa[open] { border-left-color: var(--cyan); }

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--silver);
  line-height: 1.5;
}

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

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--mist);
  transition: color .25s var(--ease), transform .3s var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "–";
  color: var(--cyan);
}

.page-faq #qa-subscribe .qa[open] summary::after { color: var(--lava); }
.page-faq #qa-tools .qa[open] summary::after { color: var(--violet); }

.page-faq .qa summary:hover { color: #fff; }
.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa__no {
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--mist);
  flex: none;
}

.page-faq .qa__body {
  padding: 0 20px 20px 54px;
  position: relative;
  animation: faq-sweep .35s var(--ease) both;
}

.page-faq .qa__body::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 2px;
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-faq #qa-subscribe .qa__body::before { background: linear-gradient(90deg, var(--lava), transparent); }
.page-faq #qa-tools .qa__body::before { background: linear-gradient(90deg, var(--violet), transparent); }

.page-faq .qa__body p {
  margin: 0;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .qa__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(40, 240, 210, .5);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  border-bottom-style: solid;
}

@keyframes faq-sweep {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding-top: var(--faq-gap);
  display: grid;
  gap: 30px;
}

.page-faq .faq-support__lede {
  max-width: 62ch;
  color: var(--mist);
  font-size: 16.5px;
  line-height: 1.78;
  margin: 0 0 26px;
}

.page-faq .faq-support__meta {
  display: grid;
  gap: 16px;
  margin: 0 0 20px;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-support__meta dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 5px;
}

.page-faq .faq-support__meta dd {
  margin: 0;
  font-size: 16.5px;
  color: var(--silver);
}

.page-faq .faq-support__meta a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 240, 210, .4);
}

.page-faq .faq-support__meta a:hover,
.page-faq .faq-support__meta a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-support__note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
  margin: 0 0 24px;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

/* ---------- 继续深入 ---------- */
.page-faq .faq-more {
  padding-top: var(--faq-gap);
}

.page-faq .faq-more__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  text-decoration: none;
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-faq .faq-more__card:hover {
  transform: translateY(-3px);
  background: var(--panel);
}

.page-faq .faq-more__name {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-more__desc {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
    gap: 44px;
    padding-top: 44px;
  }

  .page-faq .doc-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-faq .doc-path__svg {
    margin-bottom: -48px;
  }

  .page-faq .faq-support {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
    gap: 48px;
  }

  .page-faq .faq-support__meta {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-faq .qa__body {
    padding-left: 58px;
    max-width: 78ch;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.55fr 1fr;
    gap: 64px;
  }

  .page-faq .faq-docs__intro,
  .page-faq .faq-support__lede {
    margin-bottom: 40px;
  }

  .page-faq .faq-support__fig {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .doc-card,
  .page-faq .faq-more__card {
    transition: none;
  }

  .page-faq .doc-card:hover,
  .page-faq .faq-more__card:hover {
    transform: none;
  }

  .page-faq .qa__body {
    animation: none;
  }
}