/* ================= 问题排查页 ================= */
.page-faq {
  --faq-rule: rgba(20, 22, 26, 0.1);
  --faq-rule-dark: rgba(242, 244, 243, 0.14);
  --faq-gold-tint: rgba(195, 155, 39, 0.08);
  --faq-teal-tint: rgba(46, 125, 107, 0.1);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 26px 0 52px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--gold) 0%, var(--gold) 40%,
    var(--teal) 40%, var(--teal) 76%,
    var(--amber) 76%, var(--amber) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -140px;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(195, 155, 39, 0.22), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(242, 244, 243, 0.55);
}

.page-faq .faq-hero .crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(242, 244, 243, 0.3);
}

.page-faq .faq-hero .crumb a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 212, 138, 0.4);
}

.page-faq .faq-hero .crumb a:hover {
  border-bottom-color: var(--gold-lt);
}

.page-faq .faq-hero__grid {
  gap: 36px 48px;
  align-items: start;
}

.page-faq .faq-hero__lead .eyebrow {
  color: var(--gold-lt);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: rgba(242, 244, 243, 0.78);
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--faq-rule-dark);
  border-radius: 4px;
  background: rgba(242, 244, 243, 0.05);
  padding: 20px 22px 6px;
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 4px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(242, 244, 243, 0.55);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-hero__stats li {
  display: grid;
  grid-template-columns: auto auto;
  justify-content: start;
  align-items: baseline;
  gap: 4px 10px;
  padding: 16px 0;
  border-top: 1px solid var(--faq-rule-dark);
}

.page-faq .faq-hero__stats li:first-child {
  border-top: 0;
}

.page-faq .faq-hero__num {
  font-size: 40px;
  line-height: 1;
  font-weight: 600;
  color: var(--gold-lt);
}

.page-faq .faq-hero__unit {
  font-family: var(--font-ui);
  font-size: 13px;
  color: rgba(242, 244, 243, 0.6);
}

.page-faq .faq-hero__label {
  grid-column: 1 / -1;
  font-family: var(--font-ui);
  font-size: 14px;
  color: rgba(242, 244, 243, 0.82);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  padding-top: 44px;
  padding-bottom: 76px;
}

.page-faq .faq-index {
  align-self: start;
  min-width: 0;
  border-bottom: 1px solid var(--faq-rule);
  padding-bottom: 10px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-faq .faq-index .index-link {
  display: inline-block;
  padding: 4px 10px 4px 0;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--gray);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index .index-link:hover {
  color: var(--ink);
}

.page-faq .faq-index .index-link[aria-current] {
  color: var(--ink);
  border-bottom-color: var(--gold);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group,
.page-faq .faq-tags {
  margin-top: 52px;
}

.page-faq .faq-stream > *:first-child {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 6px;
}

.page-faq .faq-group__no {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__desc {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 折叠问答 ---------- */
.page-faq .fold {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .fold > summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 16px 34px 16px 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .fold > summary::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .fold[open] > summary {
  background: linear-gradient(90deg, var(--faq-gold-tint), transparent 72%);
}

.page-faq .fold[open] > summary::after {
  transform: translateY(-20%) rotate(225deg);
}

.page-faq .fold > summary:hover {
  color: var(--gold);
}

.page-faq .fold__body {
  padding: 0 34px 20px 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-faq .fold__body p {
  margin: 0 0 0.9em;
}

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

/* ---------- 状态标签区 ---------- */
.page-faq .faq-tags {
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  padding: 26px 22px 30px;
}

.page-faq .faq-tags .faq-group__no {
  display: block;
  margin-bottom: 6px;
}

.page-faq .faq-tags h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-tags__intro {
  margin: 0 0 22px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: rgba(242, 244, 243, 0.75);
}

.page-faq .faq-tags__img {
  margin: 0 0 24px;
}

.page-faq .faq-tags__img img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 3px;
  object-fit: cover;
}

.page-faq .faq-taglist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-taglist li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--faq-rule-dark);
}

.page-faq .faq-taglist li p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 244, 243, 0.78);
}

.page-faq .faq-tags .tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  align-self: start;
  justify-self: start;
  padding: 5px 12px;
  border: 1px solid;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.page-faq .faq-tags .tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.page-faq .faq-tags .tag-gold {
  color: var(--gold-lt);
  border-color: rgba(240, 212, 138, 0.45);
  background: rgba(195, 155, 39, 0.18);
}

.page-faq .faq-tags .tag-teal {
  color: #9ED8C7;
  border-color: rgba(158, 216, 199, 0.45);
  background: rgba(46, 125, 107, 0.26);
}

.page-faq .faq-tags .tag-amber {
  color: #E8B573;
  border-color: rgba(232, 181, 115, 0.45);
  background: rgba(169, 102, 10, 0.24);
}

/* ---------- 参数同步排查 ---------- */
.page-faq .faq-sync__img {
  margin: 18px 0 26px;
}

.page-faq .faq-sync__img img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--faq-rule);
  border-radius: 3px;
  object-fit: cover;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--teal));
  opacity: 0.45;
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 22px 34px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 18px;
  height: 18px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--sheet);
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-faq .faq-note {
  margin-top: 8px;
  border: 1px solid var(--faq-rule);
  border-left: 2px solid var(--teal);
  border-radius: 3px;
  background: var(--sheet);
  padding: 16px 18px;
}

.page-faq .faq-note__label {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--teal-dk);
}

.page-faq .faq-note__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-note__list li {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
}

.page-faq .faq-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 2px;
  background: var(--teal);
}

/* ---------- 保修变更 ---------- */
.page-faq .faq-duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 20px;
}

.page-faq .faq-duo__col {
  border-top: 2px solid var(--faq-rule);
  padding-top: 14px;
}

.page-faq .faq-duo__col h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-faq .faq-duo__col p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-faq .faq-ribbon {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  margin-top: 22px;
  border-radius: 3px;
  background: var(--faq-teal-tint);
  border-left: 2px solid var(--teal);
  padding: 16px 18px;
  font-family: var(--font-ui);
}

.page-faq .faq-ribbon__key {
  font-size: 14px;
  color: var(--teal-dk);
}

.page-faq .faq-ribbon__val {
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--teal-dk);
}

.page-faq .faq-ribbon__unit {
  font-size: 14px;
  color: var(--ink-2);
}

.page-faq .faq-follow {
  margin: 18px 0 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

/* ---------- 纠错清单 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-check li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-check li:first-child {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}

.page-faq .faq-check__no {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gold);
  padding-top: 4px;
}

.page-faq .faq-check h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-faq .faq-check p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

/* ---------- 时效表 ---------- */
.page-faq .faq-table-wrap {
  margin-top: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--faq-rule);
  border-radius: 3px;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--sheet);
}

.page-faq .faq-table__cap {
  caption-side: top;
  text-align: left;
  padding: 12px 14px 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray);
  background: var(--sheet);
}

.page-faq .faq-table th {
  text-align: left;
  padding: 11px 14px;
  background: var(--ink-2);
  color: var(--paper);
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-faq .faq-table td {
  padding: 13px 14px;
  border-top: 1px solid var(--faq-rule);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  vertical-align: top;
}

.page-faq .faq-table tbody tr:hover {
  background: var(--faq-gold-tint);
}

.page-faq .faq-table .num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 14px;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .faq-table a {
  color: var(--teal-dk);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 125, 107, 0.35);
}

.page-faq .faq-table a:hover {
  border-bottom-color: var(--teal-dk);
}

/* ---------- 升级路径 ---------- */
.page-faq .faq-escalate {
  margin-top: 30px;
  border: 1px solid var(--faq-rule);
  border-radius: 3px;
  background: var(--sheet);
  padding: 22px 20px;
}

.page-faq .faq-escalate h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-faq .faq-escalate p {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-faq .faq-escalate a {
  color: var(--teal-dk);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 125, 107, 0.35);
}

.page-faq .faq-escalate a:hover {
  border-bottom-color: var(--teal-dk);
}

.page-faq .faq-escalate__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding-top: 6px;
}

.page-faq .faq-escalate__cta .btn {
  text-decoration: none;
  border-bottom: 0;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-taglist li {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-faq .faq-duo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .page-faq .faq-tags {
    padding: 32px 30px 36px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 88px;
    border-bottom: 0;
    border-left: 2px solid var(--faq-rule);
    padding-bottom: 0;
    padding-left: 0;
  }

  .page-faq .faq-index__title {
    padding-left: 14px;
  }

  .page-faq .faq-index .index-link {
    display: block;
    padding: 9px 12px 9px 14px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    margin-left: -2px;
    white-space: normal;
  }

  .page-faq .faq-index .index-link[aria-current] {
    border-bottom-color: transparent;
    border-left-color: var(--gold);
    background: var(--faq-gold-tint);
  }

  .page-faq .faq-hero {
    padding: 34px 0 64px;
  }

  .page-faq .faq-group__head h2,
  .page-faq .faq-tags h2 {
    font-size: 26px;
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1120px) {
  .page-faq .faq-body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 68px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .fold > summary::after,
  .page-faq .fold > summary,
  .page-faq .faq-index .index-link {
    transition: none;
  }
}