.page-faq {
  --faq-body: #C9D8EE;
  --faq-device: #35D6A4;
  --faq-panel-a: rgba(19, 34, 56, 0.86);
  --faq-panel-b: rgba(11, 18, 32, 0.94);
  display: block;
  padding-bottom: 72px;
  background:
    radial-gradient(880px 520px at 84% -6%, rgba(0, 229, 208, 0.09), transparent 62%),
    radial-gradient(720px 480px at 4% 10%, rgba(124, 92, 255, 0.09), transparent 60%);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: 20px 0 0;
}
.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-faq .breadcrumb-item a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.page-faq .breadcrumb-item a:hover,
.page-faq .breadcrumb-item a:focus-visible {
  color: var(--cyan);
}
.page-faq .breadcrumb-item [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 52px;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(31, 51, 80, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 51, 80, 0.55) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 76%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 76%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 4%;
  width: 48%;
  height: 74%;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(0, 229, 208, 0.12), rgba(124, 92, 255, 0.07) 52%, transparent 78%);
  clip-path: polygon(20% 0, 100% 0, 100% 80%, 58% 100%);
}
.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}
.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 7.2vw, 58px);
  line-height: 1.16;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__dial {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--faq-panel-a), var(--faq-panel-b));
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}
.page-faq .dial-cell {
  display: grid;
  gap: 8px;
  padding: 18px 14px;
  border-right: 1px solid var(--line);
  min-width: 0;
}
.page-faq .dial-cell:last-child {
  border-right: 0;
}
.page-faq .dial-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 5vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}
.page-faq .dial-cell:nth-child(2) .dial-num {
  color: var(--amber);
}
.page-faq .dial-cell:nth-child(3) .dial-num {
  color: var(--magenta);
  font-size: clamp(18px, 4.4vw, 26px);
}
.page-faq .dial-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  line-height: 1.5;
}

/* ---------- 章节基座 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: 44px 0;
}
.page-faq .section-head--left .section-title {
  max-width: 22ch;
}
.page-faq .section-sub {
  max-width: 58ch;
}
.page-faq .eyebrow--violet { color: var(--violet); }
.page-faq .eyebrow--amber { color: var(--amber); }
.page-faq .eyebrow--magenta { color: var(--magenta); }
.page-faq .eyebrow--cyan { color: var(--cyan); }
.page-faq .eyebrow--device { color: var(--faq-device); }
.page-faq .eyebrow--wine { color: var(--wine); }

.page-faq .faq-inline-note {
  margin: 26px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 13px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}
.page-faq .faq-inline-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
}
.page-faq .faq-inline-note a:hover,
.page-faq .faq-inline-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 六组处境导航 ---------- */
.page-faq .group-nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 30px;
}
.page-faq .group-card {
  --ga: var(--cyan);
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 22px 22px 20px;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ga);
  background: linear-gradient(118deg, rgba(11, 18, 32, 0.96), rgba(19, 34, 56, 0.5));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease);
}
.page-faq .group-card:hover,
.page-faq .group-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--ga);
}
.page-faq .group-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ga);
}
.page-faq .group-card__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--ink);
}
.page-faq .group-card__desc {
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}
.page-faq .gc--violet { --ga: var(--violet); }
.page-faq .gc--amber { --ga: var(--amber); }
.page-faq .gc--magenta { --ga: var(--magenta); }
.page-faq .gc--cyan { --ga: var(--cyan); }
.page-faq .gc--device { --ga: var(--faq-device); }
.page-faq .gc--wine { --ga: var(--wine); }

/* ---------- 五步流程 ---------- */
.page-faq .faq-stepfig {
  margin: 30px 0 0;
}
.page-faq .faq-stepfig .figure-frame {
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(19, 34, 56, 0.7), rgba(5, 7, 14, 0.9));
}
.page-faq .faq-stepfig .figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .step-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 28px;
}
.page-faq .step-card {
  --sa: var(--cyan);
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(19, 34, 56, 0.72), rgba(11, 18, 32, 0.92));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}
.page-faq .step-card--1 { --sa: var(--cyan); }
.page-faq .step-card--2 { --sa: var(--amber); }
.page-faq .step-card--3 { --sa: var(--magenta); }
.page-faq .step-card--4 { --sa: var(--violet); }
.page-faq .step-card--5 { --sa: var(--faq-device); }
.page-faq .step-card__no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sa);
}
.page-faq .step-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.page-faq .step-card__body {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--faq-body);
}
.page-faq .step-card__check {
  margin: 4px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(31, 51, 80, 0.9);
  font-size: 12px;
  line-height: 1.75;
  color: var(--mist);
}
.page-faq .step-card__check span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--sa);
}

/* ---------- 主体 + 目录布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}
.page-faq .faq-main {
  min-width: 0;
}
.page-faq .faq-main > .faq-block {
  border-top: 1px solid rgba(31, 51, 80, 0.7);
}
.page-faq .faq-side {
  display: none;
}

/* ---------- 问答 ---------- */
.page-faq .qa-list {
  margin-top: 28px;
  border-top: 1px solid var(--line);
}
.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--line);
}
.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 20px 0;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.55;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--cyan);
}
.page-faq .qa__idx {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.page-faq .qa__text {
  min-width: 0;
}
.page-faq .qa__q::after {
  content: "";
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}
.page-faq .qa[open] .qa__q::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}
.page-faq .qa__a {
  padding: 0 0 20px 0;
  border-left: 2px solid transparent;
  transition: border-color 0.24s var(--ease), padding-left 0.24s var(--ease);
}
.page-faq .qa[open] .qa__a {
  padding-left: 16px;
  border-left-color: var(--cyan);
}
.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 60ch;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--faq-body);
}
.page-faq .qa__a p:last-child {
  margin-bottom: 0;
}
.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.4);
}
.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 设备配图 ---------- */
.page-faq .faq-devicefig {
  margin: 28px 0 0;
}
.page-faq .faq-devicefig .figure-frame {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(14, 59, 58, 0.55), rgba(5, 7, 14, 0.9));
}
.page-faq .faq-devicefig .figure-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 工单面板 ---------- */
.page-faq .ticket-panel {
  margin-top: 32px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(179, 18, 60, 0.14), rgba(11, 18, 32, 0.94) 42%);
}
.page-faq .ticket-panel .panel-head {
  padding: 22px 22px 0;
}
.page-faq .ticket-panel .panel-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.page-faq .ticket-panel .panel-body {
  padding: 20px 22px 24px;
}
.page-faq .self-check {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}
.page-faq .self-check label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-body);
  border: 1px solid rgba(31, 51, 80, 0.9);
  background: rgba(5, 7, 14, 0.4);
  cursor: pointer;
}
.page-faq .self-check input {
  width: 15px;
  height: 15px;
  accent-color: #00E5D0;
  cursor: pointer;
}
.page-faq .ticket-contact {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.page-faq .ticket-contact__line {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  word-break: break-all;
}
.page-faq .ticket-contact__line span {
  flex: 0 0 auto;
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.page-faq .ticket-contact__line a {
  color: var(--cyan);
  text-decoration: none;
}
.page-faq .ticket-contact__line a:hover,
.page-faq .ticket-contact__line a:focus-visible {
  text-decoration: underline;
}
.page-faq .ticket-contact__note {
  margin: 4px 0 0;
  max-width: 58ch;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .ticket-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 目录 ---------- */
.page-faq .faq-side .toc-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}
.page-faq .faq-side .toc-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-side .toc-link {
  display: block;
  padding: 8px 0 8px 14px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.page-faq .faq-side .toc-link:hover,
.page-faq .faq-side .toc-link:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
}
.page-faq .faq-side .toc-link[aria-current="true"] {
  padding-left: 18px;
  color: var(--cyan);
  border-left-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .group-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .step-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .self-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding: 50px 0 70px;
  }
  .page-faq .faq-block {
    padding: 58px 0;
  }
  .page-faq .qa {
    display: grid;
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    column-gap: 32px;
    align-items: start;
  }
  .page-faq .qa > .qa__q {
    grid-column: 1;
    padding: 26px 0;
  }
  .page-faq .qa > .qa__a {
    grid-column: 2;
    padding-top: 26px;
  }
  .page-faq .qa[open] .qa__a {
    padding-left: 18px;
  }
  .page-faq .faq-devicefig {
    margin-top: 30px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.78fr);
    gap: 56px;
    align-items: end;
  }
  .page-faq .faq-hero__dial {
    transform: translateY(-6px);
  }
  .page-faq .group-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 218px;
    column-gap: 52px;
  }
  .page-faq .faq-side {
    display: block;
  }
  .page-faq .faq-side .toc {
    position: sticky;
    top: 84px;
  }
  .page-faq .step-rail {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 1240px) {
  .page-faq .qa {
    grid-template-columns: minmax(0, 274px) minmax(0, 1fr);
    column-gap: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .group-card,
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .qa__a,
  .page-faq .faq-side .toc-link {
    transition: none;
  }
  .page-faq .group-card:hover,
  .page-faq .group-card:focus-visible {
    transform: none;
  }
}