.page-faq {
  background: var(--ink-void);
  color: var(--chalk);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 88px);
  background:
    radial-gradient(120% 90% at 90% -10%, rgba(79, 240, 192, 0.12), transparent 62%),
    linear-gradient(180deg, var(--pitch-900) 0%, var(--ink-void) 82%);
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(36, 53, 45, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 53, 45, 0.6) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
  padding-top: clamp(20px, 3vw, 28px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  align-items: start;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 6vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

.page-faq .faq-hero__dek {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
}

/* 横向速查条 */
.page-faq .faq-quickbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-faq .faq-quickbar__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 14px 16px;
  background: rgba(11, 15, 13, 0.78);
  transition: background 0.2s var(--ease);
}

.page-faq .faq-quickbar__item:hover {
  background: var(--pitch-700);
}

.page-faq .faq-quickbar__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal-cyan);
}

.page-faq .faq-quickbar__name {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--chalk);
}

.page-faq .faq-quickbar__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--grid-line);
  background: var(--pitch-900);
}

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

.page-faq .faq-hero__figure::after {
  content: "看台边线 · 手机端";
  position: absolute;
  top: -10px;
  right: 12px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-void);
  background: var(--paper);
  border: 1px solid var(--grid-line);
  transform: rotate(-1.5deg);
}

/* 问答主体 */
.page-faq .faq-body {
  background: var(--pitch-900);
  border-top: 1px solid var(--grid-line);
  padding-block: clamp(48px, 7vw, 96px);
}

.page-faq .faq-tabs {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-tabs__rail {
  align-self: start;
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-tabs .tabs__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 12px;
  border-top: 1px solid var(--grid-line);
  padding-top: 12px;
}

.page-faq .faq-tabs .tabs__btn {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: 12px 12px 12px 14px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.4;
  color: var(--slate);
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-tabs .tabs__btn:hover {
  color: var(--chalk);
  background: rgba(23, 69, 58, 0.55);
}

.page-faq .faq-tabs .tabs__btn[aria-selected="true"] {
  color: var(--chalk);
  background: var(--pitch-700);
  border-left-color: var(--signal-cyan);
}

.page-faq .faq-tabs .tabs__btn:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 2px;
}

.page-faq .faq-tabs__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal-cyan);
}

.page-faq .faq-tabs__panel {
  min-width: 0;
}

.page-faq .faq-tabs__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-tabs__idx {
  font-size: 13px;
  color: var(--signal-cyan);
}

.page-faq .faq-tabs__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.6vw, 2.3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

/* 折叠条目 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--grid-line);
  transition: box-shadow 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  box-shadow: inset 3px 0 0 var(--amber);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 8px 16px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--chalk);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--signal-cyan);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--signal-cyan);
}

.page-faq .faq-item__mark::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__mark::before {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__body {
  padding: 0 16px 20px 16px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__lead {
  color: var(--chalk);
  font-weight: 500;
}

.page-faq .faq-item__body a {
  color: var(--signal-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__body a:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 2px;
}

.page-faq .faq-kbd {
  display: inline-block;
  padding: 0 5px;
  font-size: 0.92em;
  color: var(--signal-cyan);
  background: rgba(79, 240, 192, 0.1);
  border: 1px solid rgba(79, 240, 192, 0.3);
  border-radius: 2px;
  white-space: nowrap;
}

.page-faq .faq-panel-figure {
  margin-top: 20px;
}

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

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

/* 未解决提示 */
.page-faq .faq-help {
  overflow-x: clip;
  padding-block: clamp(48px, 8vw, 112px);
  background:
    linear-gradient(180deg, var(--ink-void) 0%, var(--pitch-900) 100%);
  border-top: 1px solid var(--grid-line);
}

.page-faq .faq-help__panel {
  position: relative;
  max-width: 720px;
  margin-inline: auto;
  padding: clamp(24px, 4vw, 40px);
  color: var(--ink-void);
}

.page-faq .faq-help__panel::after {
  content: "";
  position: absolute;
  top: -11px;
  left: 50%;
  width: 96px;
  height: 22px;
  background: rgba(143, 163, 154, 0.38);
  transform: translateX(-50%) rotate(-2deg);
}

.page-faq .faq-help__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink-void);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-deep);
}

.page-faq .faq-help__mail {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--cyan-deep);
  word-break: break-all;
}

.page-faq .faq-help__cta {
  margin-top: 22px;
}

/* 响应式 */
@media (min-width: 560px) {
  .page-faq .faq-quickbar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-quickbar {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-tabs {
    grid-template-columns: 258px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-tabs__rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item > summary {
    padding: 18px 12px 18px 18px;
    font-size: 16px;
  }

  .page-faq .faq-item__body {
    padding: 0 12px 22px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quickbar__item,
  .page-faq .faq-tabs .tabs__btn,
  .page-faq .faq-item {
    transition: none;
  }
}
<<<END>>>