.page-faq {
  --faq-gap: clamp(1rem, 3vw, 1.75rem);
  --faq-panel: rgba(13, 43, 69, 0.68);
  --faq-panel-deep: rgba(10, 35, 55, 0.9);
  display: block;
}

.page-faq .faq-crumbs {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  margin-top: 0.75rem;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  background:
    radial-gradient(circle at 92% 8%, rgba(45, 226, 210, 0.16), transparent 46%),
    linear-gradient(180deg, rgba(13, 43, 69, 0.82), rgba(7, 28, 51, 0.35));
  border-top: 2px solid var(--line-neon);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero__main h1 {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.7rem, 5.4vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--c-sand);
}

.page-faq .faq-hero__main .lede {
  max-width: 62ch;
  margin: 0;
  color: rgba(244, 239, 228, 0.82);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.35rem;
}

.page-faq .faq-hero__meta {
  align-self: start;
  padding: 1.15rem 1.25rem 1.3rem;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--c-coral);
  background: var(--faq-panel-deep);
}

.page-faq .faq-hero__meta p {
  margin: 0.35rem 0 0;
}

.page-faq .faq-hero__meta .data-label {
  margin-top: 0;
  color: var(--c-slate);
  letter-spacing: 0.08em;
}

.page-faq .faq-hero__meta-line {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.74);
}

.page-faq .faq-unit {
  margin-left: 0.28rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--c-slate);
}

/* ---------- 章节快捷跳转 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.9rem 0 0.2rem;
  scrollbar-width: thin;
}

.page-faq .faq-jump a {
  flex: 0 0 auto;
  padding: 0.42rem 0.85rem;
  font-size: 0.82rem;
  color: rgba(244, 239, 228, 0.8);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  background: rgba(13, 43, 69, 0.5);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--c-neon);
  border-color: var(--line-neon);
}

/* ---------- 快速开始 ---------- */
.page-faq .faq-start {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.page-faq .faq-step {
  position: relative;
  padding: 1.05rem 1.15rem 1.15rem 4.1rem;
  background: var(--faq-panel);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--line-neon);
}

.page-faq .faq-step__num {
  position: absolute;
  left: 1.1rem;
  top: 1.15rem;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--c-neon);
  letter-spacing: 0.02em;
}

.page-faq .faq-step h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--c-sand);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.76);
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--faq-panel-deep);
  overflow: hidden;
}

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

.page-faq .faq-figure .media__caption {
  padding: 0.7rem 0.95rem;
  font-size: 0.78rem;
  color: var(--c-slate);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-qa-group {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-qa {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  transition: background 0.2s var(--ease);
}

.page-faq .faq-qa[open] {
  background: var(--faq-panel);
  border-bottom-color: var(--line-neon);
}

.page-faq .faq-qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0.25rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-sand);
}

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

.page-faq .faq-qa summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--c-neon);
}

.page-faq .faq-qa[open] summary::after {
  content: "–";
}

.page-faq .faq-qa summary:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 2px;
}

.page-faq .faq-qa__body {
  padding: 0 1.75rem 1.15rem 0.25rem;
}

.page-faq .faq-qa__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.78);
}

/* ---------- 大屏与多端 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 0.8rem;
}

.page-faq .faq-device {
  padding: 1.1rem 1.15rem 1.25rem;
  background: var(--faq-panel);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--c-tide);
}

.page-faq .faq-device h3 {
  margin: 0.7rem 0 0.6rem;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--c-sand);
}

.page-faq .faq-device ul {
  margin: 0;
  padding-left: 1.05rem;
  display: grid;
  gap: 0.45rem;
}

.page-faq .faq-device li {
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.76);
}

.page-faq .faq-device li::marker {
  color: var(--c-neon);
}

/* ---------- 反馈流程 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-flow__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-faq .faq-flow__steps li {
  position: relative;
  padding: 0 0 1.35rem 1.5rem;
  border-left: 1px solid var(--line);
}

.page-faq .faq-flow__steps li:last-child {
  padding-bottom: 0.2rem;
  border-left-color: transparent;
}

.page-faq .faq-flow__steps li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 0.32rem;
  width: 7px;
  height: 7px;
  background: var(--c-neon);
  box-shadow: 0 0 0 3px rgba(45, 226, 210, 0.16);
}

.page-faq .faq-flow__num {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--c-clay);
}

.page-faq .faq-flow__steps h3 {
  margin: 0.25rem 0 0.35rem;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-sand);
}

.page-faq .faq-flow__steps p {
  margin: 0;
  max-width: 56ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.76);
}

.page-faq .faq-flow__aside {
  align-self: start;
  padding: 1.25rem;
  border: 1px solid var(--line-neon);
  background: var(--faq-panel-deep);
}

.page-faq .faq-flow__aside p {
  margin: 0.3rem 0 0;
}

.page-faq .faq-flow__aside .data-label {
  margin-top: 0;
  color: var(--c-slate);
  letter-spacing: 0.08em;
}

.page-faq .faq-flow__aside-line {
  font-size: 0.88rem;
  line-height: 1.72;
  color: rgba(244, 239, 228, 0.74);
}

.page-faq .faq-flow__aside .btn {
  margin-top: 1.15rem;
}

/* ---------- 教程分类索引 ---------- */
.page-faq .faq-index {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-index__nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line-soft);
  scrollbar-width: thin;
}

.page-faq .faq-index__nav-title {
  display: none;
}

.page-faq .faq-index__nav a {
  flex: 0 0 auto;
  padding: 0.5rem 0.85rem;
  font-size: 0.82rem;
  color: rgba(244, 239, 228, 0.82);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  background: rgba(13, 43, 69, 0.45);
}

.page-faq .faq-index__nav a:hover,
.page-faq .faq-index__nav a:focus-visible {
  color: var(--c-neon);
  border-color: var(--line-neon);
}

.page-faq .faq-index__body {
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-cat {
  padding: 1.05rem 1.15rem 1.2rem;
  background: var(--faq-panel);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-cat__title {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin: 0 0 0.85rem;
  padding-bottom: 0.6rem;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-sand);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-cat__title .mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-coral);
}

.page-faq .faq-cat__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.15rem;
}

.page-faq .faq-cat__list li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(92, 106, 115, 0.22);
}

.page-faq .faq-cat__list li:last-child {
  border-bottom: none;
}

.page-faq .faq-cat__no {
  flex: 0 0 auto;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--c-tide);
}

.page-faq .faq-cat__list a {
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(244, 239, 228, 0.86);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-cat__list a:hover,
.page-faq .faq-cat__list a:focus-visible {
  color: var(--c-neon);
  border-bottom-color: var(--line-neon);
}

/* ---------- 找不到答案 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.2rem, 4vw, 2rem);
  border: 1px solid var(--line-soft);
  background: linear-gradient(140deg, rgba(244, 239, 228, 0.94), rgba(244, 239, 228, 0.8));
  color: var(--c-abyss);
}

.page-faq .faq-help .eyebrow {
  margin: 0;
  color: rgba(7, 28, 51, 0.6);
}

.page-faq .faq-help h2 {
  margin: 0.35rem 0 0.7rem;
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 3.4vw, 1.65rem);
  font-weight: 800;
  color: var(--c-abyss);
}

.page-faq .faq-help p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.82;
  color: rgba(7, 28, 51, 0.82);
}

.page-faq .faq-help__mail {
  margin-top: 0.8rem;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--c-abyss);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-self: end;
}

.page-faq .faq-help .btn--quiet {
  color: var(--c-abyss);
  border-color: rgba(7, 28, 51, 0.35);
}

.page-faq .faq-help .btn--quiet:hover,
.page-faq .faq-help .btn--quiet:focus-visible {
  color: var(--c-abyss);
  border-color: var(--c-abyss);
  background: rgba(7, 28, 51, 0.08);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-start {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-devices {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

  .page-faq .faq-flow {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.5fr) auto;
    align-items: end;
  }

  .page-faq .faq-index__nav {
    flex-direction: column;
    overflow: visible;
    gap: 0.4rem;
    border-bottom: none;
    border-right: 1px solid var(--line-soft);
    padding: 0 0.9rem 0 0;
  }

  .page-faq .faq-index__nav-title {
    display: block;
    margin: 0 0 0.45rem;
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--c-slate);
  }

  .page-faq .faq-index__nav a {
    flex: 0 1 auto;
    border-color: transparent;
    background: transparent;
    padding: 0.45rem 0.6rem;
  }

  .page-faq .faq-index {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index__nav {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .faq-index__body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-figure--index {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-devices {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .page-faq .faq-index__body {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-cat__list a,
  .page-faq .faq-qa {
    transition: none;
  }
}