/* ============================================================
   问题排查页 /troubleshooting/ —— 页面专属样式
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-nav-w: 264px;
  --faq-sticky-top: 112px;
  display: block;
  background: var(--kx-void);
  color: var(--kx-ink);
  font-family: var(--kx-font-body);
}

/* ---------- 面包屑 ---------- */
.page-faq .kx-breadcrumb {
  padding-top: 22px;
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--kx-mute);
}

.page-faq .kx-breadcrumb a {
  color: var(--kx-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--kx-ease), border-color 0.2s var(--kx-ease);
}

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

.page-faq .kx-breadcrumb span + span {
  margin-left: 8px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(36px, 6vw, 76px) 0 clamp(44px, 6vw, 72px);
  background:
    radial-gradient(880px 520px at 10% -14%, rgba(47, 243, 224, 0.13), transparent 62%),
    radial-gradient(700px 460px at 94% 4%, rgba(108, 99, 255, 0.16), transparent 64%),
    var(--kx-void);
  border-bottom: 1px solid var(--kx-line);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq h1 {
  margin: 14px 0 18px;
  font-family: var(--kx-font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--kx-ink);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--kx-mute);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-bottom: 24px;
  padding: 15px 0;
  border-top: 1px solid var(--kx-line);
  border-bottom: 1px solid var(--kx-line);
}

.page-faq .faq-hero__meta span {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--kx-mute);
}

.page-faq .faq-hero__meta b {
  font-family: var(--kx-font-mono);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--kx-cyan);
}

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

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  overflow: hidden;
  background: var(--kx-panel);
  box-shadow: var(--kx-shadow);
}

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

/* ---------- 三步排查条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-steps__item {
  position: relative;
  padding: 18px 20px 18px 24px;
  background: linear-gradient(180deg, rgba(18, 32, 64, 0.88), rgba(10, 20, 40, 0.62));
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  transition: transform 0.2s var(--kx-ease), border-color 0.2s var(--kx-ease);
}

.page-faq .faq-steps__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--kx-line);
  transition: background 0.2s var(--kx-ease);
}

.page-faq .faq-steps__item:nth-child(1)::before { background: var(--kx-cyan); }
.page-faq .faq-steps__item:nth-child(2)::before { background: var(--kx-violet); }
.page-faq .faq-steps__item:nth-child(3)::before { background: var(--kx-orange); }

.page-faq .faq-steps__item:hover {
  transform: translateY(-2px);
  border-color: var(--kx-line);
}

.page-faq .faq-steps__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--kx-mute);
}

.page-faq .faq-steps__item strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--kx-font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--kx-ink);
}

.page-faq .faq-steps__note {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: var(--kx-mute);
}

/* ---------- 主体：侧栏 + 问答流 ---------- */
.page-faq .faq-body {
  padding: clamp(46px, 7vw, 88px) 0;
  background: var(--kx-void);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* 分组导航 */
.page-faq .faq-nav__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0 0 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-nav__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  padding: 9px 13px;
  font-size: 14px;
  color: var(--kx-mute);
  text-decoration: none;
  background: rgba(10, 20, 40, 0.6);
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  transition: color 0.2s var(--kx-ease), border-color 0.2s var(--kx-ease), background 0.2s var(--kx-ease);
}

.page-faq .faq-nav__list a:hover,
.page-faq .faq-nav__list a:focus-visible {
  color: var(--kx-ink);
  border-color: var(--kx-cyan);
  background: rgba(47, 243, 224, 0.07);
}

.page-faq .faq-nav__num {
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--kx-cyan);
}

.page-faq .faq-nav__count {
  margin-left: auto;
  padding: 1px 6px;
  font-family: var(--kx-font-mono);
  font-size: 11px;
  color: var(--kx-mute);
  border: 1px solid var(--kx-line);
}

/* 问答流 */
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: clamp(38px, 6vw, 68px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 118px;
  padding-left: clamp(14px, 2.4vw, 26px);
  border-left: 2px solid var(--kx-line-soft);
  transition: border-color 0.25s var(--kx-ease);
}

.page-faq .faq-group:target {
  border-left-color: var(--kx-cyan);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--kx-line);
}

.page-faq .faq-group__num {
  font-family: var(--kx-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--kx-cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--kx-font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.5vw, 31px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--kx-ink);
}

.page-faq .faq-group__desc {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--kx-mute);
}

/* 分组自查链 */
.page-faq .faq-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin-bottom: 16px;
  padding: 11px 14px;
  background: rgba(18, 32, 64, 0.5);
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
}

.page-faq .faq-chain__tag {
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--kx-lime);
}

.page-faq .faq-chain__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 4px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-chain__list li {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  color: var(--kx-mute);
}

.page-faq .faq-chain__list li + li::before {
  content: "→";
  margin: 0 7px 0 3px;
  font-family: var(--kx-font-mono);
  color: var(--kx-cyan);
}

/* 折叠问答 */
.page-faq .faq-qa {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-item {
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  background: rgba(10, 20, 40, 0.55);
  transition: border-color 0.2s var(--kx-ease), background 0.2s var(--kx-ease);
}

.page-faq .faq-item:hover,
.page-faq .faq-item:focus-within {
  border-color: var(--kx-cyan);
}

.page-faq .faq-item[open] {
  border-color: var(--kx-cyan);
  background: rgba(18, 32, 64, 0.72);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  list-style: none;
  cursor: pointer;
  border-left: 2px solid transparent;
  font-family: var(--kx-font-display);
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--kx-ink);
  transition: border-color 0.2s var(--kx-ease), color 0.2s var(--kx-ease);
}

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

.page-faq .faq-item > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-right: 2px solid var(--kx-cyan);
  border-bottom: 2px solid var(--kx-cyan);
  transform: rotate(-45deg);
  transition: transform 0.2s var(--kx-ease);
}

.page-faq .faq-item[open] > summary {
  border-left-color: var(--kx-cyan);
}

.page-faq .faq-item[open] > summary::before {
  transform: rotate(45deg);
}

.page-faq .faq-item__body {
  padding: 0 18px 16px clamp(18px, 3vw, 42px);
  font-size: 15px;
  line-height: 1.8;
  color: var(--kx-mute);
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body strong {
  font-family: var(--kx-font-mono);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--kx-lime);
}

.page-faq .faq-item__body a,
.page-faq .faq-support__note a {
  color: var(--kx-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--kx-line-soft);
  transition: border-color 0.2s var(--kx-ease);
}

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

/* ---------- 人工支持区块 ---------- */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .faq-support__figure {
  margin: 0;
  min-height: 210px;
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  overflow: hidden;
  background: var(--kx-panel);
}

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

.page-faq .faq-support__panel {
  padding: 22px 20px 24px;
  border: 1px solid var(--kx-line);
  border-radius: var(--kx-radius);
  background: linear-gradient(158deg, rgba(18, 32, 64, 0.92), rgba(10, 20, 40, 0.72));
  box-shadow: var(--kx-shadow);
}

.page-faq .faq-support__panel h3 {
  margin: 0 0 16px;
  font-family: var(--kx-font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--kx-ink);
}

.page-faq .faq-support__contact {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-support__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--kx-line);
}

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

.page-faq .faq-support__contact dt {
  font-family: var(--kx-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--kx-cyan);
}

.page-faq .faq-support__contact dd {
  display: grid;
  gap: 5px;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--kx-ink);
  word-break: break-word;
}

.page-faq .faq-support__contact dd span {
  font-size: 13px;
  font-weight: 400;
  line-height: 1.72;
  color: var(--kx-mute);
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--kx-line);
  font-size: 13px;
  line-height: 1.85;
  color: var(--kx-mute);
}

/* ============================================================
   断点
   ============================================================ */

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .page-faq .faq-steps__item + .faq-steps__item {
    margin-left: -1px;
  }

  .page-faq .faq-chain {
    flex-wrap: nowrap;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-faq .faq-hero__figure {
    transform: translateY(10px);
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    align-items: stretch;
  }

  .page-faq .faq-support__figure {
    min-height: 100%;
  }

  .page-faq .faq-support__figure img {
    height: 100%;
    min-height: 260px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--kx-line);
  }

  .page-faq .faq-nav__list a {
    margin-left: -1px;
    padding: 10px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-nav__list a:hover,
  .page-faq .faq-nav__list a:focus-visible {
    color: var(--kx-ink);
    border-left-color: var(--kx-cyan);
    background: rgba(47, 243, 224, 0.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-steps__item,
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-nav__list a {
    transition: none;
  }

  .page-faq .faq-steps__item:hover {
    transform: none;
  }
}
<<<END>>>