/* ===== 问题排查页 page-faq ===== */
.page-faq {
  --faq-num: 34px;
  --faq-answer-pad: calc(var(--faq-num) + 12px);
  padding-bottom: 96px;
}

@media (min-width: 700px) {
  .page-faq {
    --faq-num: 46px;
  }
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin: 20px 0 34px;
  isolation: isolate;
}

.page-faq .faq-hero__main {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-faq .faq-hero__main::before {
  content: "";
  position: absolute;
  inset: -22% -12% -32% -14%;
  background:
    linear-gradient(118deg, rgba(49, 225, 212, .20) 0%, rgba(169, 107, 255, .12) 42%, transparent 72%),
    linear-gradient(300deg, rgba(255, 123, 51, .10) 0%, transparent 46%);
  filter: blur(4px);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero .tt-h1 {
  margin: 12px 0 18px;
}

.page-faq .faq-hero .tt-lede {
  max-width: 48ch;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: center;
    margin: 30px 0 48px;
  }
}

/* 状态速览卡 */
.page-faq .faq-status {
  padding: 22px 22px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(140% 120% at 100% 0%, rgba(49, 225, 212, .16), transparent 58%),
    linear-gradient(165deg, var(--ink-2), var(--teal-deep));
  box-shadow: var(--shadow-lift);
  min-width: 0;
}

.page-faq .faq-status .tt-label {
  color: var(--silver);
  letter-spacing: .14em;
}

.page-faq .faq-status__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-faq .faq-status__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-status__k {
  color: var(--silver);
  font-size: 13.5px;
  letter-spacing: .04em;
}

.page-faq .faq-status__v {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
  white-space: nowrap;
}

/* ---------- 流程示意 ---------- */
.page-faq .faq-flow {
  margin: 0 0 42px;
  border-radius: var(--radius-lg);
}

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

/* ---------- 分组标签 ---------- */
.page-faq .faq-check {
  margin-bottom: 56px;
}

.page-faq .faq-check__sub {
  color: var(--silver);
  margin: 10px 0 22px;
  max-width: 54ch;
}

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

.page-faq .faq-tabs__list {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-tabs__list::-webkit-scrollbar {
  display: none;
}

.page-faq .tt-tabs__tab {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  padding: 10px 17px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(18, 41, 61, .55);
  color: var(--silver);
  font-family: var(--font-cn);
  font-size: 14.5px;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.page-faq .tt-tabs__tab .faq-tabs__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .tt-tabs__tab:hover {
  border-color: var(--line-strong);
  color: #fff;
}

.page-faq .tt-tabs__tab[aria-selected="true"],
.page-faq .tt-tabs__tab.is-active {
  border-color: rgba(49, 225, 212, .62);
  background: rgba(49, 225, 212, .15);
  color: #fff;
}

.page-faq .tt-tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 面板 ---------- */
.page-faq .tt-tabs__panel {
  min-width: 0;
}

.page-faq .faq-panel + .faq-panel {
  margin-top: 40px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-panel__lead {
  margin: 0 0 18px;
  color: var(--paper);
  max-width: 56ch;
}

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

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

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: var(--faq-num) minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 18px 0;
  min-height: 48px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: rgba(198, 206, 218, .55);
  transition: color .2s ease;
}

.page-faq .faq-item__text {
  font-family: var(--font-cn);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--paper);
  min-width: 0;
  overflow-wrap: anywhere;
  transition: color .2s ease;
}

.page-faq .faq-item__chev {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  flex: none;
  transition: border-color .24s ease, background .24s ease;
}

.page-faq .faq-item__chev::before,
.page-faq .faq-item__chev::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--silver);
  transition: transform .24s ease, background .24s ease;
}

.page-faq .faq-item__chev::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__chev::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__chev {
  border-color: var(--cyan);
  background: rgba(49, 225, 212, .14);
}

.page-faq .faq-item[open] .faq-item__chev::before,
.page-faq .faq-item[open] .faq-item__chev::after {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__chev::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  position: relative;
  padding: 0 0 24px var(--faq-answer-pad);
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 64ch;
}

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

.page-faq .faq-item__a::before {
  content: "";
  position: absolute;
  left: calc(var(--faq-answer-pad) - 12px);
  top: 5px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(49, 225, 212, .12) 100%);
  opacity: 0;
  transition: opacity .26s ease;
}

.page-faq .faq-item[open] .faq-item__a::before {
  opacity: 1;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-reveal .26s ease both;
}

@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-item__links {
  margin-top: 12px;
}

.page-faq .faq-item__links .tt-chip {
  text-decoration: none;
}

/* 机型对照图 */
.page-faq .faq-fit-media {
  margin: 26px 0 0;
  max-width: 460px;
  border-radius: var(--radius-lg);
}

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

/* ---------- 联系人工 ---------- */
.page-faq .faq-escalate {
  margin-top: 20px;
  padding: 30px 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(255, 123, 51, .18), transparent 58%),
    radial-gradient(90% 130% at 0% 100%, rgba(169, 107, 255, .14), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink-3));
  box-shadow: var(--shadow-lift);
}

@media (min-width: 760px) {
  .page-faq .faq-escalate {
    padding: 40px 38px 36px;
  }
}

.page-faq .faq-escalate .tt-h2 {
  margin: 10px 0 12px;
}

.page-faq .faq-escalate .tt-lede {
  max-width: 56ch;
}

.page-faq .faq-escalate__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 26px 0 24px;
}

@media (min-width: 780px) {
  .page-faq .faq-escalate__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

.page-faq .faq-need {
  padding: 20px 20px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: rgba(10, 26, 43, .62);
}

.page-faq .faq-need__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--amber);
  margin-bottom: 8px;
}

.page-faq .faq-need .tt-h3 {
  margin: 0 0 8px;
}

.page-faq .faq-need p {
  margin: 0;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-escalate .tt-note {
  margin: 0 0 22px;
}

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

.page-faq .faq-escalate__hint {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--silver);
}

/* ---------- 顺路入口 ---------- */
.page-faq .faq-next {
  margin-top: 44px;
}

.page-faq .faq-next .tt-h3 {
  margin: 0 0 16px;
}

.page-faq .faq-next__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 700px) {
  .page-faq .faq-next__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-faq .faq-next__link {
  display: block;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(18, 41, 61, .5);
  text-decoration: none;
  transition: border-color .22s ease, background .22s ease, transform .22s ease;
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  border-color: rgba(49, 225, 212, .55);
  background: rgba(49, 225, 212, .1);
  transform: translateY(-2px);
}

.page-faq .faq-next__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-next__k {
  display: block;
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.page-faq .faq-next__d {
  display: block;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
  .page-faq .faq-next__link {
    transition: none;
  }
}
</main>