.page-faq {
  --faq-line: rgba(157, 179, 173, .18);
  background: var(--pitch);
  color: var(--neon);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq a {
  color: inherit;
}

.page-faq :focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-block: 22px 4px;
}

.page-faq .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .breadcrumbs__link {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .breadcrumbs__link:hover {
  color: var(--yellow);
}

.page-faq .breadcrumbs__sep {
  margin-inline: 8px;
  opacity: .6;
}

.page-faq .breadcrumbs__here {
  color: var(--neon);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(24px, 5vw, 48px) clamp(46px, 8vw, 92px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: min(600px, 78vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(245, 194, 66, .17), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--green);
  margin: 0;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.78;
}

.page-faq .faq-hero__jump {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__media {
  margin: 0;
  justify-self: center;
  width: min(300px, 74vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  box-shadow:
    0 0 0 2px rgba(245, 194, 66, .45),
    0 0 0 18px rgba(245, 194, 66, .07);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.7) brightness(.84) contrast(1.06);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-deck {
  padding-block: clamp(20px, 4vw, 36px) clamp(64px, 10vw, 118px);
}

.page-faq .faq-tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 14px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(157, 179, 173, .35) transparent;
}

.page-faq .faq-tabs::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-tabs::-webkit-scrollbar-thumb {
  background: rgba(157, 179, 173, .3);
  border-radius: 2px;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(11, 27, 58, .55);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .faq-tab:hover {
  color: var(--neon);
  border-color: var(--yellow);
}

.page-faq .faq-tab.is-active {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-deck__grid {
  display: grid;
  gap: 36px;
}

.page-faq .faq-deck__stream {
  min-width: 0;
}

/* ---------- 目录索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--faq-line);
}

.page-faq .faq-index__link {
  display: block;
  margin-left: -1px;
  padding: 9px 0 9px 14px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--yellow);
  border-left-color: var(--yellow);
}

/* ---------- 分组通用 ---------- */
.page-faq .faq-group {
  padding-block: clamp(32px, 6vw, 54px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq .faq-group__flag {
  display: inline-block;
  padding: 4px 11px;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .06em;
  line-height: 1.4;
  color: var(--ink);
  background: var(--yellow);
  transform: skewX(-8deg);
}

.page-faq .faq-group--red .faq-group__flag {
  background: var(--red);
  color: var(--neon);
}

.page-faq .faq-group--green .faq-group__flag {
  background: var(--green);
}

.page-faq .faq-group--steel .faq-group__flag {
  background: var(--mist);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 4.2vw, 34px);
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-faq .faq-group__note {
  margin: 14px 0 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-group__note a,
.page-faq .triage__link {
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 194, 66, .5);
}

.page-faq .faq-group__note a:hover,
.page-faq .triage__link:hover {
  border-bottom-color: var(--yellow);
}

/* ---------- 三步自查 ---------- */
.page-faq .triage {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-faq .triage__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

.page-faq .triage__item:last-child {
  padding-bottom: 0;
}

.page-faq .triage__item::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 56px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(245, 194, 66, .55), rgba(157, 179, 173, .1));
}

.page-faq .triage__item:last-child::after {
  content: none;
}

.page-faq .triage__node {
  position: relative;
  z-index: 1;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1;
  color: var(--ink);
  background: var(--yellow);
}

.page-faq .triage__body {
  padding-top: 3px;
  min-width: 0;
}

.page-faq .triage__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--neon);
}

.page-faq .triage__text {
  margin: 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.82;
}

/* ---------- 提示框 ---------- */
.page-faq .faq-note {
  display: block;
  margin: 30px 0 0;
  padding: 15px 18px;
  border-left: 3px solid var(--yellow);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(157, 179, 173, .13);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.78;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-list {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.page-faq .qa-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: var(--stand);
  overflow: hidden;
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-faq .qa-item[open] {
  border-color: rgba(245, 194, 66, .5);
  box-shadow: 0 22px 44px -32px rgba(0, 0, 0, .95);
}

.page-faq .qa-item__q {
  display: block;
  position: relative;
  padding: 16px 50px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--neon);
}

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

.page-faq .qa-item__q::marker {
  content: "";
}

.page-faq .qa-item__q::after {
  content: "";
  position: absolute;
  right: 21px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--yellow);
  border-bottom: 2px solid var(--yellow);
  transform: translateY(-72%) rotate(45deg);
  transition: transform var(--speed) var(--ease);
}

.page-faq .qa-item[open] .qa-item__q::after {
  transform: translateY(-28%) rotate(-135deg);
}

.page-faq .qa-item__a {
  padding: 0 18px 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.82;
}

.page-faq .qa-item__a p {
  margin: 0;
  max-width: 48ch;
}

.page-faq .qa-item__a a {
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 194, 66, .45);
}

/* ---------- 设备横条图 ---------- */
.page-faq .faq-band {
  margin: 26px 0 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--night);
}

.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(.68) brightness(.82) contrast(1.04);
}

.page-faq .faq-band__caption {
  padding: 12px 18px;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  margin-top: clamp(38px, 6vw, 56px);
  padding: clamp(24px, 5vw, 44px);
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--ink);
  scroll-margin-top: 96px;
}

.page-faq .faq-help__title {
  margin: 0;
  font-size: clamp(23px, 4.2vw, 32px);
  line-height: 1.24;
  color: var(--ink);
}

.page-faq .faq-help__lede {
  margin: 14px 0 0;
  max-width: 44ch;
  color: #3c4a45;
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 22px;
  color: #2c3a35;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 11px;
  height: 2px;
  background: var(--red);
}

.page-faq .faq-help__contact {
  margin-top: 26px;
  padding: 20px 22px;
  border-radius: var(--r-md);
  background: var(--night);
  color: var(--neon);
  display: grid;
  gap: 8px;
}

.page-faq .faq-help__line {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .01em;
}

.page-faq .faq-help__more {
  margin: 20px 0 0;
  color: #3c4a45;
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-help__more a {
  color: #10201c;
  border-bottom: 2px solid var(--yellow);
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
    gap: 42px;
  }

  .page-faq .faq-hero__media {
    justify-self: end;
    width: min(340px, 34vw);
  }

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

  .page-faq .faq-help__line:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-deck__grid {
    grid-template-columns: minmax(0, 1fr) 212px;
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-deck__aside {
    position: sticky;
    top: 104px;
  }

  .page-faq .qa-list .qa-item:nth-child(even) {
    margin-left: 14px;
  }

  .page-faq .qa-list .qa-item:nth-child(3n) {
    margin-left: 6px;
  }

  .page-faq .faq-deck__stream {
    max-width: 780px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}