.page-faq {
  --faq-line: #E3EBF7;
  --faq-soft: #EDF3FD;
  background: var(--mist);
  color: var(--ink);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 24px 0 48px;
  background:
    radial-gradient(120% 120% at 88% 0%, rgba(26, 92, 255, .10) 0%, rgba(26, 92, 255, 0) 58%),
    var(--mist);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: 20px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -.03em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-faq .faq-hero__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-400);
}

.page-faq .faq-jump {
  display: grid;
  background: var(--white);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--blue);
}

.page-faq .faq-jump__item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--ink);
  border-top: 1px solid var(--faq-line);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  background: var(--faq-soft);
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--blue);
}

.page-faq .faq-jump__label {
  font-size: 15px;
  font-weight: 600;
}

/* ---------- 三步 ---------- */
.page-faq .faq-collect {
  background: var(--white);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-steps {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-faq .faq-step {
  position: relative;
  padding: 24px 20px 20px;
  background: var(--mist);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--blue);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 52px;
  line-height: .9;
  letter-spacing: -.05em;
  color: var(--blue);
}

.page-faq .faq-step__title {
  margin: 16px 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-faq .faq-step__result {
  margin: 18px 0 0;
  padding: 12px 14px;
  background: var(--white);
  border-left: 3px solid var(--cyan);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-500);
}

.page-faq .faq-step__k {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-faq .faq-figure {
  margin: 28px 0 0;
  background: var(--white);
  border: 1px solid var(--faq-line);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: 36px;
  margin-top: 32px;
  max-width: 940px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-group__tag {
  background: var(--blue-100);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 4px 10px;
}

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

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 14px;
  gap: 12px;
  align-items: start;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__num {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-400);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__q {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item summary:hover .faq-item__q,
.page-faq .faq-item summary:focus-visible .faq-item__q {
  color: var(--blue);
}

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

.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 8px;
  justify-self: end;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--ink-400);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item__sign::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__sign::before {
  background: var(--blue);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--blue);
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  position: relative;
  padding: 0 0 20px 42px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item[open] .faq-item__a::before {
  content: "";
  position: absolute;
  left: 14px;
  top: -2px;
  bottom: 12px;
  width: 2px;
  background: var(--faq-line);
}

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

/* ---------- 排查路径 ---------- */
.page-faq .faq-trouble {
  background: var(--faq-soft);
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

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

.page-faq .faq-path__step {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 28px;
}

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

.page-faq .faq-path__step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 34px;
  bottom: 12px;
  width: 2px;
  background: var(--blue-100);
}

.page-faq .faq-path__step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 11px;
  bottom: 2px;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--blue-300);
  border-bottom: 2px solid var(--blue-300);
  transform: rotate(45deg);
}

.page-faq .faq-path__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-faq .faq-path__title {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--blue-100);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-path__title:hover,
.page-faq .faq-path__title:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
}

.page-faq .faq-path__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-faq .faq-path__link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-trouble__aside {
  padding: 24px 20px;
  background: var(--white);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--orange);
}

.page-faq .faq-trouble__list {
  list-style: none;
  margin: 18px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-trouble__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-500);
}

.page-faq .faq-trouble__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% 60%, 60% 100%, 0 100%);
}

/* ---------- 文档 ---------- */
.page-faq .faq-docs {
  background: var(--white);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-docs__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-docs__lead {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-faq .faq-docs__list {
  list-style: none;
  margin: 24px 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-docs__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-faq .faq-docs__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% 60%, 60% 100%, 0 100%);
}

.page-faq .faq-docs__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: var(--mist);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact__panel {
  display: grid;
  gap: 28px;
  padding: 28px 20px;
  background: var(--white);
  border: 1px solid var(--faq-line);
  border-top: 4px solid var(--blue);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-contact__text {
  margin: 14px 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

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

.page-faq .faq-contact__list {
  margin: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-contact__row {
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-contact__row:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-contact__list dt {
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-faq .faq-contact__list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-mono {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--ink);
  word-break: break-all;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 32px 0 56px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-item summary {
    grid-template-columns: 34px minmax(0, 1fr) 14px;
    padding: 18px 0;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }

  .page-faq .faq-item__a {
    padding-left: 46px;
    font-size: 15.5px;
  }

  .page-faq .faq-item[open] .faq-item__a::before {
    left: 16px;
  }

  .page-faq .faq-trouble__aside {
    padding: 28px 26px;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .8fr);
    gap: 56px;
    align-items: end;
    margin-top: 28px;
  }

  .page-faq .faq-jump {
    align-self: end;
  }

  .page-faq .faq-groups {
    gap: 44px;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-docs__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 56px;
    padding: 44px 40px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}