.page-faq {
  --faq-line: rgba(14, 116, 144, 0.30);
  --faq-line-soft: rgba(14, 116, 144, 0.16);
  --faq-rule: rgba(42, 33, 28, 0.12);

  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(30px, 5vw, 62px) clamp(40px, 5.5vw, 76px);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(34, 211, 238, 0.16), transparent 58%),
    var(--deep);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: min(620px, 70%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 107, 44, 0.12), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  grid-template-columns: 1fr;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(27px, 5.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--cream);
  max-width: 22ch;
}

.page-faq .faq-hero .section-lede {
  margin-top: 16px;
  max-width: 52ch;
  color: var(--on-dark);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
}

.page-faq .faq-hero .btn-row {
  margin-top: 24px;
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--line-cyan);
  background: var(--glass);
  border-radius: var(--r-lg);
  padding: clamp(18px, 2.6vw, 28px);
  backdrop-filter: blur(8px);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero__facts li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(247, 241, 228, 0.16);
}

.page-faq .faq-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__label {
  color: var(--on-dark);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- 症状速查 ---------- */

.page-faq .quick-layout {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .quick-cards {
  display: grid;
  gap: var(--gap);
  align-content: start;
}

.page-faq .quick-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px);
  border-radius: var(--r-md);
  background: var(--cream);
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--orange);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--faq-line);
  border-left-color: var(--cyan-deep);
  background: #FBF7EE;
}

.page-faq .quick-card__badge {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--deep);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}

.page-faq .quick-card__body {
  display: block;
}

.page-faq .quick-card__title {
  display: block;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-faq .quick-card__text {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .quick-card__more {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--cyan-deep);
  border-bottom: 1px solid var(--faq-line);
  padding-bottom: 2px;
}

.page-faq .quick-card:hover .quick-card__more {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-faq .quick-media {
  border-radius: var(--r-lg);
  overflow: hidden;
  min-height: 220px;
}

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

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-nav {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-nav__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--faq-rule);
  font-size: 14px;
  font-weight: 600;
  color: var(--graphite);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  background: rgba(34, 211, 238, 0.12);
  border-color: var(--faq-line);
  color: var(--cyan-deep);
}

.page-faq .faq-nav__link[aria-current="true"] {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--cyan);
}

.page-faq .faq-nav__idx {
  font-size: 11px;
  opacity: 0.8;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  position: relative;
  margin-bottom: clamp(40px, 6vw, 76px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: clamp(32px, 4vw, 52px);
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 20px;
  padding-bottom: 18px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 22px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--cyan-deep));
}

.page-faq .faq-group__num {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-deep);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 权限对照表 ---------- */

.page-faq .perm-block {
  margin-bottom: 22px;
}

.page-faq .perm-block__title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .perm-wrap {
  overflow-x: auto;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  background: #FBF7EE;
}

.page-faq .perm-table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
}

.page-faq .perm-table thead th {
  background: var(--deep);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: left;
  padding: 13px 16px;
  white-space: nowrap;
}

.page-faq .perm-table tbody th {
  text-align: left;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .perm-table tbody td {
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .perm-table tbody tr:nth-child(even) {
  background: var(--sand);
}

.page-faq .perm-table tbody tr:last-child th,
.page-faq .perm-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 折叠问答 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  background: #FBF7EE;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--faq-line);
  background: var(--cream);
}

.page-faq .qa:hover {
  border-color: var(--faq-line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: background 0.2s var(--ease);
}

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

.page-faq .qa__q:hover {
  background: rgba(34, 211, 238, 0.10);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa__arrow {
  flex: none;
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1.5px solid var(--faq-line);
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .qa__arrow::before,
.page-faq .qa__arrow::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--cyan-deep);
  transform: translate(-50%, -50%);
}

.page-faq .qa__arrow::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa__arrow::after {
  width: 2px;
  height: 10px;
  transition: transform 0.2s var(--ease);
}

.page-faq .qa[open] .qa__arrow {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa__arrow::before,
.page-faq .qa[open] .qa__arrow::after {
  background: var(--deep);
}

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

.page-faq .qa__a {
  padding: 0 18px 18px;
  border-top: 1px solid var(--faq-rule);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite);
  animation: faq-fade 0.22s var(--ease) both;
}

.page-faq .qa__a > p {
  margin: 14px 0 0;
}

.page-faq .qa__a > p:first-child {
  margin-top: 16px;
}

@keyframes faq-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 步骤条 ---------- */

.page-faq .qa-steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .qa-steps__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .qa-steps__num {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.16);
  border: 1px solid var(--faq-line-soft);
  color: var(--cyan-deep);
  font-size: 12px;
  font-weight: 700;
}

/* ---------- 换设备横幅 ---------- */

.page-faq .faq-banner {
  aspect-ratio: 4 / 3;
  border-radius: var(--r-lg);
  overflow: hidden;
  margin: 0 0 22px;
}

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

/* ---------- 安卓产品线卡片 ---------- */

.page-faq .android-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  margin-bottom: 22px;
}

.page-faq .android-card {
  position: relative;
  padding: 18px 18px 20px;
  border-radius: var(--r-md);
  background: var(--midnight);
  border: 1px solid var(--line-cyan-soft);
  overflow: hidden;
}

.page-faq .android-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 78%);
}

.page-faq .android-card__name {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .android-card__size {
  margin: 8px 0 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .android-card__desc {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--on-dark);
}

/* ---------- 结尾提示 ---------- */

.page-faq .faq-cta {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--orange);
  background: var(--sand);
}

.page-faq .faq-cta__text {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

/* ---------- 窄屏适配 ---------- */

@media (max-width: 419px) {
  .page-faq .quick-card {
    grid-template-columns: 1fr;
  }

  .page-faq .qa__q {
    font-size: 15px;
  }
}

/* ---------- 平板 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-banner {
    aspect-ratio: 18 / 7;
  }

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

  .page-faq .qa__q {
    padding: 18px 22px;
  }

  .page-faq .qa__a {
    padding: 0 22px 20px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(180px, 216px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-nav {
    padding: 0 0 0 16px;
    border-bottom: 0;
    border-left: 2px solid var(--faq-rule);
  }

  .page-faq .faq-nav__list {
    display: grid;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-nav__link {
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    white-space: normal;
    padding: 9px 11px;
  }

  .page-faq .quick-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-faq .quick-media {
    min-height: 100%;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group__lede {
    max-width: 52ch;
  }
}
</