.page-faq {
  padding-bottom: clamp(84px, 11vw, 108px);
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 46px) 0 clamp(26px, 3.6vw, 50px);
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(900px 460px at 86% -4%, rgba(46, 125, 255, 0.30), transparent 62%),
    radial-gradient(620px 380px at 2% 10%, rgba(18, 194, 106, 0.20), transparent 64%),
    linear-gradient(180deg, #0a1120 0%, var(--ink) 78%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(36, 48, 77, 0.5) 0 2px, transparent 2px 28px);
  opacity: 0.34;
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--grass);
}

.page-faq .faq-kicker::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--grass);
}

.page-faq .faq-hero-title {
  margin: 0;
  font-size: var(--fs-88);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero-lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: var(--fs-18);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 检索块 ---------- */
.page-faq .faq-search {
  border: 2px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--panel-2) 0%, var(--panel) 100%);
  box-shadow: inset 0 1px 0 rgba(79, 216, 232, 0.16), inset 0 20px 44px rgba(4, 7, 14, 0.82), var(--hard-sm);
  padding: clamp(14px, 2vw, 20px);
}

.page-faq .faq-search-label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--ink);
  box-shadow: inset 0 4px 16px rgba(4, 7, 14, 0.9);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-search-box:focus-within {
  border-color: var(--grass);
  box-shadow: inset 0 4px 16px rgba(4, 7, 14, 0.9), 0 0 0 3px rgba(18, 194, 106, 0.22);
}

.page-faq .faq-search-icon {
  flex: none;
  color: var(--cyan);
}

.page-faq .faq-input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: var(--fs-18);
  line-height: 1.4;
  padding: 2px 0;
}

.page-faq .faq-input:focus {
  outline: none;
}

.page-faq .faq-input::placeholder {
  color: var(--muted);
  opacity: 0.9;
}

.page-faq .faq-hot-title {
  margin: 14px 0 0;
  font-size: var(--fs-12);
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-hot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 分类条 ---------- */
.page-faq .faq-rail {
  border-bottom: 2px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-rail-inner {
  display: grid;
  gap: 10px;
  padding: 14px 0;
}

.page-faq .faq-rail-label {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--muted);
}

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

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

.page-faq .faq-rail-list > li {
  --accent: var(--grass);
  flex: none;
}

.page-faq .faq-rail-list > li:nth-child(2) { --accent: var(--data); }
.page-faq .faq-rail-list > li:nth-child(3) { --accent: var(--cyan); }
.page-faq .faq-rail-list > li:nth-child(4) { --accent: var(--amber); }
.page-faq .faq-rail-list > li:nth-child(5) { --accent: var(--flare); }
.page-faq .faq-rail-list > li:nth-child(6) { --accent: var(--grass); }

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--panel-2);
  color: var(--text);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-rail-link:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.page-faq .faq-rail-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-faq .faq-rail-link[aria-current="true"] {
  border-color: var(--accent);
  background: rgba(46, 125, 255, 0.12);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--accent);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-top: clamp(28px, 4.4vw, 52px);
}

.page-faq .faq-section + .faq-section {
  border-top: 2px solid var(--line);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-faq #entry { --faq-accent: var(--grass); }
.page-faq #metrics { --faq-accent: var(--data); }
.page-faq #watchlist { --faq-accent: var(--cyan); }
.page-faq #updates { --faq-accent: var(--amber); }
.page-faq #devices { --faq-accent: var(--flare); }
.page-faq #help { --faq-accent: var(--grass); }

.page-faq .faq-sec-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  align-items: baseline;
  margin-bottom: clamp(12px, 1.8vw, 20px);
}

.page-faq .faq-sec-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--faq-accent, var(--grass));
}

.page-faq .faq-sec-title {
  margin: 0;
  font-size: var(--fs-36);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-sec-lead {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  max-width: 64ch;
  font-size: var(--fs-18);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  border-top: 2px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 14px;
  align-items: start;
  padding: clamp(15px, 1.9vw, 20px) 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--faq-accent, var(--grass));
  outline-offset: 2px;
}

.page-faq .faq-mark {
  position: relative;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--panel-2);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  background: var(--faq-accent, var(--grass));
  transform: translate(-50%, -50%);
}

.page-faq .faq-mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-q-text {
  font-size: var(--fs-18);
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.2s ease;
}

.page-faq .faq-q:hover .faq-q-text {
  color: var(--faq-accent, var(--grass));
}

.page-faq .faq-a {
  margin: 0 0 0 6px;
  padding: 2px 0 clamp(16px, 2vw, 22px) 32px;
  border-left: 2px solid var(--line);
  transition: border-color 0.25s ease;
}

.page-faq .faq-item[open] .faq-a {
  border-left-color: var(--faq-accent, var(--grass));
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 216, 232, 0.5);
}

.page-faq .faq-a a:hover {
  color: var(--grass);
  border-bottom-color: var(--grass);
}

/* ---------- 答案内的数字与步骤 ---------- */
.page-faq .faq-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--text);
  background: rgba(46, 125, 255, 0.16);
  border-bottom: 1px solid rgba(79, 216, 232, 0.5);
  border-radius: 2px;
  padding: 0 4px;
}

.page-faq .faq-num--flare {
  background: rgba(255, 106, 43, 0.16);
  border-bottom-color: rgba(255, 106, 43, 0.55);
  word-break: break-all;
}

.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  margin: 16px 0 4px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  align-items: start;
}

.page-faq .faq-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 14px;
  top: 30px;
  bottom: -14px;
  width: 2px;
  background: var(--line);
}

.page-faq .faq-step-num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--panel-2);
  color: var(--faq-accent, var(--grass));
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  z-index: 1;
}

.page-faq .faq-steps p {
  margin: 2px 0 0;
  max-width: 62ch;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
}

.page-faq .faq-figure .media-frame {
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
  box-shadow: var(--hard-sm);
  overflow: hidden;
}

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

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 底部联系条 ---------- */
.page-faq .faq-dock {
  position: fixed;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  z-index: 40;
  width: min(560px, calc(100% - 96px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px 10px 16px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-dock-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-dock-text strong {
  color: var(--text);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-faq .faq-rail-inner {
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 20px;
  }

  .page-faq .faq-sec-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 18px;
  }

  .page-faq .faq-sec-lead {
    grid-column: 2 / -1;
  }

  .page-faq .faq-figure .media-frame {
    max-width: 880px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-dock {
    width: calc(100% - 92px);
    padding: 8px 10px;
  }

  .page-faq .faq-dock-text {
    font-size: var(--fs-12);
  }

  .page-faq .faq-a {
    padding-left: 24px;
  }

  .page-faq .faq-hero-title {
    letter-spacing: -0.01em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail-link,
  .page-faq .faq-mark::after,
  .page-faq .faq-a,
  .page-faq .faq-q-text,
  .page-faq .faq-search-box {
    transition: none;
  }

  .page-faq .faq-rail-link:hover {
    transform: none;
  }
}