/* ===== 帮助问答页 ===== */
.page-faq {
  --faq-measure: 780px;
  display: block;
  color: var(--paper);
}

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

/* --- 面包屑 --- */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(20px, 3vw, 36px);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}
.page-faq .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-faq .crumbs [aria-current="page"] {
  color: var(--paper);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  padding-top: clamp(28px, 4.6vw, 62px);
  padding-bottom: clamp(10px, 2vw, 22px);
  background-image:
    radial-gradient(58% 78% at 12% 0%, rgba(52, 229, 200, .16), transparent 68%),
    radial-gradient(46% 66% at 88% 18%, rgba(240, 180, 41, .12), transparent 70%);
  background-repeat: no-repeat;
}
.page-faq .faq-hero__title {
  max-width: 15ch;
  margin: 20px 0 0;
  font-size: clamp(2rem, 6vw, 3.9rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.022em;
  color: var(--paper);
  transform: skewY(-1.6deg);
}
.page-faq .faq-hero__lede {
  max-width: 42ch;
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

/* --- 分类跳转 --- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 38px);
  padding-top: clamp(18px, 2.4vw, 28px);
  border-top: 2px solid var(--line);
}
.page-faq .faq-jump__item {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 2px solid var(--line);
  background: var(--layer);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease),
    background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-soft);
}

/* --- 章节通用 --- */
.page-faq .faq-section {
  padding-top: clamp(72px, 10vw, 138px);
}
.page-faq .faq-section__head {
  max-width: var(--faq-measure);
}
.page-faq .faq-section__title {
  margin: 18px 0 0;
  max-width: 22ch;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.016em;
  color: var(--paper);
}
.page-faq .faq-section__intro {
  margin: 16px 0 0;
  max-width: 40ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* --- 三步排查 --- */
.page-faq .faq-check {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(28px, 4vw, 48px);
}
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-steps__item {
  padding: clamp(18px, 2.4vw, 26px);
  border: 2px solid var(--line);
  background: linear-gradient(140deg, var(--layer), rgba(10, 31, 26, .92));
  box-shadow: var(--shadow-soft);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.page-faq .faq-steps__item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
  border-color: var(--cyan);
}
.page-faq .faq-steps__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--cyan);
}
.page-faq .faq-steps__title {
  margin: 14px 0 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}
.page-faq .faq-steps__text {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.page-faq .faq-check__media {
  margin: 0;
  transform: rotate(-1.4deg);
}
.page-faq .faq-check__media img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

/* --- 问答列表 --- */
.page-faq .faq-list {
  max-width: var(--faq-measure);
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 2px solid var(--line);
}
.page-faq .faq-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 3vw, 32px) 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-faq .faq-item__body {
  min-width: 0;
}
.page-faq .faq-item__q {
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -.01em;
}
.page-faq .faq-item__btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  min-height: 44px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: none;
  font: inherit;
  color: var(--paper);
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}
.page-faq .faq-item__btn::before {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--cyan);
}
.page-faq .faq-item__btn[aria-expanded="true"]::before {
  content: "－";
}
.page-faq .faq-item__btn:hover {
  color: var(--mist);
}
.page-faq .faq-item__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}
.page-faq .faq-item__a {
  margin-top: 12px;
}
.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a .faq-item__lead {
  padding-left: 14px;
  border-left: 3px solid var(--amber);
  color: var(--paper);
  font-weight: 700;
}
.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

/* --- 更新节奏图 --- */
.page-faq .faq-timeline-fig {
  margin: clamp(28px, 4vw, 48px) 0 0;
  border: 2px solid var(--line);
  background: var(--layer);
}
.page-faq .faq-timeline-fig img {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 12 / 5;
}

/* --- 联系支持 --- */
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
  max-width: var(--faq-measure);
  margin-top: clamp(28px, 4vw, 44px);
}
.page-faq .faq-contact__item {
  padding: clamp(18px, 2.4vw, 26px);
  border: 2px solid var(--line);
  background: var(--layer);
  box-shadow: var(--shadow-soft);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease);
}
.page-faq .faq-contact__item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}
.page-faq .faq-contact__label {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--muted);
}
.page-faq .faq-contact__value {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  line-height: 1.5;
  color: var(--gold);
  word-break: break-word;
}
.page-faq .faq-contact__note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}
.page-faq .faq-contact__more {
  max-width: var(--faq-measure);
  margin: clamp(22px, 3vw, 34px) 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}
.page-faq .faq-contact__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-contact__more a:hover,
.page-faq .faq-contact__more a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

/* --- 断点 --- */
@media (min-width: 720px) {
  .page-faq .faq-item {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 0 22px;
  }
  .page-faq .faq-item__idx {
    padding-top: .5em;
  }
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-check {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  .page-faq .faq-hero__title,
  .page-faq .faq-check__media {
    transform: none;
  }
  .page-faq .faq-jump {
    gap: 8px;
  }
  .page-faq .faq-jump__item {
    flex: 1 1 calc(50% - 8px);
    justify-content: center;
    padding: 0 10px;
    font-size: 12px;
    letter-spacing: .04em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
  .page-faq .faq-hero__title,
  .page-faq .faq-check__media {
    transform: none;
  }
  .page-faq .faq-steps__item:hover,
  .page-faq .faq-contact__item:hover,
  .page-faq .faq-jump__item:hover {
    transform: none;
  }
}