.page-faq {
  padding-top: calc(var(--bar-h) + 24px);
  padding-bottom: clamp(48px, 8vw, 104px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(30px, 5vw, 56px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: -22%;
  top: -46%;
  width: min(760px, 92vw);
  height: min(760px, 92vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 134, 255, 0.18), transparent 68%);
  pointer-events: none;
}
.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__deco {
  position: absolute;
  right: -0.06em;
  top: -0.18em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(84px, 17vw, 210px);
  line-height: 0.8;
  letter-spacing: -0.03em;
  color: var(--ink);
  opacity: 0.07;
  pointer-events: none;
  user-select: none;
}
.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 18ch;
}
.page-faq .faq-hero__lede {
  max-width: 62ch;
  color: var(--mist);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-hero__status {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 分栏骨架 ---------- */
.page-faq .faq-layout {
  display: block;
}
.page-faq .faq-index {
  margin-bottom: clamp(30px, 5vw, 48px);
}
.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line-soft);
}
.page-faq .faq-index__item {
  min-width: 0;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-index__link:hover {
  color: var(--ink);
  background: rgba(74, 134, 255, 0.07);
}
.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}
.page-faq .faq-index__link[aria-current="true"] {
  color: var(--ink);
  border-left-color: var(--blue);
  background: rgba(74, 134, 255, 0.11);
}
.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--blue-soft);
}
.page-faq .faq-index__link[aria-current="true"] .faq-index__num {
  color: var(--teal);
}
.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 24px);
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 80px);
}
.page-faq .faq-group .section-head {
  margin-bottom: 22px;
}
.page-faq .faq-group__media {
  margin: 0 0 24px;
}
.page-faq .faq-group__media--pair {
  margin-top: 24px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 14px;
}
.page-faq .faq-list--spaced {
  margin-top: 22px;
}
.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--panel-soft);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-item[open] {
  background: var(--panel);
  border-color: var(--line);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--teal);
}
.page-faq .faq-item[open] > .faq-item__q::after {
  content: "−";
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
}
.page-faq .faq-item__qtext {
  flex: 1 1 auto;
  margin: 0;
  font: inherit;
  line-height: 1.35;
}
.page-faq .faq-item__q .status {
  display: none;
}
.page-faq .faq-item__a {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-a-intro {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}
.page-faq .faq-a-intro a {
  color: var(--blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 182, 255, 0.4);
}
.page-faq .faq-a-intro a:hover {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--bg-deep);
}
.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--teal);
}
.page-faq .step__body {
  min-width: 0;
}
.page-faq .step__title {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}
.page-faq .step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .step__text a {
  color: var(--blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 182, 255, 0.4);
}
.page-faq .step__text a:hover {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

/* ---------- 版本通道 ---------- */
.page-faq .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-faq .channel {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--panel-soft);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-faq .channel:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.page-faq .channel__meta {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue-soft);
}
.page-faq .channel__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-faq .channel__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 手机 / 电脑对照 ---------- */
.page-faq .device-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-faq .device {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-soft) 100%);
}
.page-faq .device__tag {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--blue-soft);
}
.page-faq .device__name {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-faq .device__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .device__item {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}
.page-faq .device__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}

/* ---------- 人工支持 ---------- */
.page-faq .support-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .support-list__item {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .support-list__dot {
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--blue);
}
.page-faq .support-list__item:nth-child(2) .support-list__dot {
  background: var(--teal);
}
.page-faq .support-list__item:nth-child(3) .support-list__dot {
  background: var(--amber);
}
.page-faq .support-list__item:nth-child(4) .support-list__dot {
  background: var(--ok);
}
.page-faq .contact-block {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-deep);
}
.page-faq .contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  font-size: 15px;
}
.page-faq .contact-line__key {
  flex: 0 0 auto;
  min-width: 5.5em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.page-faq .contact-line__val {
  color: var(--ink);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-item__q .status {
    display: inline-flex;
  }
  .page-faq .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .device-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(190px, 240px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    margin-bottom: 0;
  }
  .page-faq .faq-item__q {
    padding: 18px 22px;
    font-size: 19px;
  }
  .page-faq .faq-item__a {
    padding: 18px 22px 22px;
  }
  .page-faq .step {
    padding: 18px;
  }
  .page-faq .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .channel:hover {
    transform: none;
  }
}