.page-faq {
  --faq-card-bg: rgba(22, 32, 58, 0.72);
  --faq-card-line: rgba(58, 71, 97, 0.85);
  --faq-well: rgba(5, 10, 19, 0.55);
  --faq-alert: #EE4C68;
  --faq-radius: 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 420px;
  height: 420px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(55, 225, 232, 0.13), transparent 68%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -170px;
  left: -90px;
  width: 340px;
  height: 340px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(200, 16, 46, 0.14), transparent 70%);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__lead {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-hero__lead .title-xl {
  margin: 0;
  font-size: clamp(30px, 7vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--bright);
}

.page-faq .faq-hero__lead .lede {
  margin: 0;
  max-width: 56ch;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--faq-card-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--faq-well);
  aspect-ratio: 2 / 1;
}

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

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 快速定位条 ---------- */
.page-faq .faq-index__bar {
  display: grid;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--faq-card-line);
  border-radius: var(--faq-radius);
  background: linear-gradient(105deg, rgba(22, 32, 58, 0.9), rgba(5, 10, 19, 0.72));
}

.page-faq .faq-index__label {
  margin: 0;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--bright);
  border-color: var(--cyan-deep);
  background: rgba(14, 143, 153, 0.14);
}

.page-faq .faq-index__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 225, 232, 0.16);
}

.page-faq .faq-index__link--warn .faq-index__dot {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.16);
}

.page-faq .faq-index__link--alert .faq-index__dot {
  background: var(--faq-alert);
  box-shadow: 0 0 0 3px rgba(238, 76, 104, 0.18);
}

.page-faq .faq-index__link--calm .faq-index__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 225, 232, 0.16);
}

@media (min-width: 760px) {
  .page-faq .faq-index__bar {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 24px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 诊断区标题 ---------- */
.page-faq .faq-head {
  display: grid;
  gap: 12px;
}

.page-faq .faq-head .title-lg {
  margin: 6px 0 0;
}

.page-faq .faq-head__hint {
  margin: 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

@media (min-width: 880px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 28ch);
    align-items: end;
    gap: 36px;
  }
}

/* ---------- 诊断卡片 ---------- */
.page-faq .faq-cases {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-faq .faq-case {
  position: relative;
  padding: 22px 20px 20px 24px;
  border: 1px solid var(--faq-card-line);
  border-radius: var(--faq-radius);
  background: var(--faq-card-bg);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-faq .faq-case::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--cyan);
}

.page-faq .faq-case--warn::before {
  background: var(--orange);
}

.page-faq .faq-case--alert::before {
  background: var(--faq-alert);
}

.page-faq .faq-case:hover {
  transform: translateY(-2px);
  border-color: rgba(55, 225, 232, 0.5);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, 0.9);
}

.page-faq .faq-case--warn:hover {
  border-color: rgba(255, 138, 61, 0.5);
}

.page-faq .faq-case--alert:hover {
  border-color: rgba(238, 76, 104, 0.5);
}

.page-faq .faq-case__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 16px;
}

.page-faq .faq-case__num {
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-faq .faq-case--warn .faq-case__num {
  color: var(--orange);
}

.page-faq .faq-case--alert .faq-case__num {
  color: var(--faq-alert);
}

.page-faq .faq-case__title {
  flex: 1 1 200px;
  margin: 0;
  color: var(--bright);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.45;
}

.page-faq .faq-case__head .status {
  flex: none;
  margin-left: auto;
}

.page-faq .faq-case__left {
  display: grid;
  gap: 14px;
  align-content: start;
  margin-bottom: 18px;
}

.page-faq .faq-case__symptom {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-case__cause {
  margin: 0;
  padding: 10px 14px;
  border-left: 2px solid var(--metal);
  border-radius: 0 4px 4px 0;
  background: var(--faq-well);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.72;
}

.page-faq .faq-case__cause-label {
  display: inline-block;
  margin-right: 8px;
  color: var(--bright);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-faq .faq-case__media {
  margin: 0;
  border: 1px solid var(--faq-card-line);
  border-radius: 4px;
  overflow: hidden;
  background: var(--midnight);
  aspect-ratio: 3 / 2;
}

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

/* ---------- 步骤折叠 ---------- */
.page-faq .faq-steps {
  border-top: 1px dashed rgba(58, 71, 97, 0.9);
  padding-top: 14px;
}

.page-faq .faq-steps__trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: color var(--ease);
}

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

.page-faq .faq-steps__trigger::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--ease);
}

.page-faq .faq-steps[open] .faq-steps__trigger::after {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-faq .faq-steps__trigger:hover,
.page-faq .faq-steps__trigger:focus-visible {
  color: var(--bright);
}

.page-faq .faq-case--warn .faq-steps__trigger {
  color: var(--orange);
}

.page-faq .faq-case--alert .faq-steps__trigger {
  color: var(--faq-alert);
}

.page-faq .faq-steps__list {
  display: grid;
  gap: 16px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-steps__n {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--cyan-deep);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 12px;
  line-height: 1;
}

.page-faq .faq-case--warn .faq-steps__n {
  border-color: rgba(255, 138, 61, 0.6);
  color: var(--orange);
}

.page-faq .faq-case--alert .faq-steps__n {
  border-color: rgba(238, 76, 104, 0.6);
  color: var(--faq-alert);
}

.page-faq .faq-steps__name {
  margin: 0 0 4px;
  color: var(--bright);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-steps__text {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.78;
}

.page-faq .faq-steps__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-steps__text a:hover,
.page-faq .faq-steps__text a:focus-visible {
  color: var(--bright);
}

@media (min-width: 940px) {
  .page-faq .faq-case {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-case__head {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-faq .faq-case__left {
    grid-column: 1;
    grid-row: 2;
    margin-bottom: 0;
  }

  .page-faq .faq-case .faq-steps {
    grid-column: 2;
    grid-row: 2;
    border-top: none;
    border-left: 1px dashed rgba(58, 71, 97, 0.9);
    padding-top: 0;
    padding-left: clamp(20px, 3vw, 34px);
  }
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact__panel {
  display: grid;
  gap: 28px;
  padding: clamp(22px, 4vw, 42px);
  border-radius: 8px;
}

.page-faq .faq-contact__lead {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-contact__lead .title-lg {
  margin: 0;
}

.page-faq .faq-contact__text {
  margin: 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-contact__lead .btn {
  justify-self: start;
  margin-top: 6px;
}

.page-faq .faq-contact__list {
  margin: 0;
  align-self: start;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(58, 71, 97, 0.55);
}

.page-faq .faq-contact__row:first-child {
  border-top: 1px solid rgba(58, 71, 97, 0.55);
}

.page-faq .faq-contact__row dt {
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .faq-contact__row dd {
  margin: 0;
  color: var(--bright);
  font-size: 15px;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

@media (min-width: 900px) {
  .page-faq .faq-contact__panel {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 受理节奏 ---------- */
.page-faq .faq-followup__head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-faq .faq-followup__head .title-md {
  margin: 0;
}

.page-faq .faq-timeline {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-timeline__item {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--faq-card-line);
  border-radius: var(--faq-radius);
  background: var(--faq-well);
  transition: border-color var(--ease);
}

.page-faq .faq-timeline__item::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(55, 225, 232, 0));
}

.page-faq .faq-timeline__item:hover {
  border-color: rgba(55, 225, 232, 0.45);
}

.page-faq .faq-timeline__num {
  margin: 0 0 10px;
  color: var(--cyan);
  font-size: 22px;
  letter-spacing: -0.02em;
}

.page-faq .faq-timeline__title {
  margin: 0 0 8px;
  color: var(--bright);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
}

.page-faq .faq-timeline__text {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.78;
}

@media (min-width: 820px) {
  .page-faq .faq-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-case,
  .page-faq .faq-timeline__item,
  .page-faq .faq-index__link,
  .page-faq .faq-steps__trigger,
  .page-faq .faq-steps__trigger::after {
    transition: none;
  }

  .page-faq .faq-case:hover {
    transform: none;
  }
}
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