.page-faq {
  --faq-rail: 272px;
  --faq-hairline: rgba(27, 42, 68, 0.8);
  --faq-panel-fill: rgba(11, 21, 38, 0.72);
  padding-bottom: clamp(56px, 8vw, 112px);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 84px) 0 clamp(32px, 5vw, 64px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(760px, 96vw);
  height: min(760px, 96vw);
  background:
    radial-gradient(circle at 55% 45%, rgba(61, 155, 240, 0.2), transparent 58%),
    radial-gradient(circle at 24% 72%, rgba(142, 123, 242, 0.16), transparent 60%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 155, 240, 0.55) 42%, rgba(142, 123, 242, 0.35) 68%, transparent);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 4.5vw, 56px);
}

.page-faq .faq-hero-copy .breadcrumb {
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-faq .faq-hero-copy .eyebrow {
  display: block;
  margin-bottom: 14px;
}

.page-faq .faq-hero-copy h1 {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  max-width: 22ch;
}

.page-faq .faq-hero-copy .lede {
  margin: 0;
  max-width: 56ch;
}

.page-faq .faq-hero-meta {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 24px;
}

.page-faq .faq-hero-meta li {
  border-top: 1px solid var(--faq-hairline);
  padding-top: 12px;
  min-width: 0;
}

.page-faq .faq-meta-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.15;
  color: var(--neon-cyan);
  word-break: keep-all;
}

.page-faq .faq-meta-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--frost-silver);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero-visual {
  position: relative;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
}

.page-faq .faq-hero-visual::before {
  content: "";
  position: absolute;
  top: -12px;
  right: -12px;
  width: 58%;
  height: 58%;
  border-top: 1px solid rgba(61, 155, 240, 0.5);
  border-right: 1px solid rgba(61, 155, 240, 0.5);
  pointer-events: none;
}

.page-faq .faq-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--crack-blue);
  filter: saturate(0.82) contrast(1.04);
}

.page-faq .faq-hero-visual-note {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--frost-silver);
  opacity: 0.7;
}

/* ===== 主体两栏 ===== */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(30px, 4.5vw, 60px);
}

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

.page-faq .faq-index .eyebrow {
  display: block;
  margin-bottom: 14px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index-link {
  display: block;
  min-width: 182px;
  padding: 13px 15px 15px;
  border: 1px solid var(--crack-blue);
  background: var(--faq-panel-fill);
  color: inherit;
  text-decoration: none;
  transition: border-color 200ms ease, background 200ms ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--ice-blue);
  background: rgba(61, 155, 240, 0.1);
}

.page-faq .faq-index-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--frost-silver);
  opacity: 0.75;
}

.page-faq .faq-index-text {
  display: block;
  margin-top: 5px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ice-white);
}

.page-faq .faq-index-sub {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--frost-silver);
}

.page-faq .faq-index-link.is-active {
  border-color: var(--ice-blue);
}

.page-faq .faq-index-link.is-active .faq-index-num {
  color: var(--neon-cyan);
  opacity: 1;
}

/* ===== 内容列 ===== */
.page-faq .faq-body {
  display: grid;
  gap: clamp(36px, 5vw, 76px);
  min-width: 0;
}

.page-faq .faq-topic {
  position: relative;
  padding-top: clamp(26px, 3.6vw, 44px);
  border-top: 1px solid var(--faq-hairline);
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-faq .faq-topic::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(56px, 14%, 148px);
  height: 1px;
  background: linear-gradient(90deg, var(--ice-blue), rgba(142, 123, 242, 0.6));
}

.page-faq .faq-topic-head h2 {
  margin: 10px 0 12px;
}

.page-faq .faq-topic-head .text-measure {
  margin: 0;
  color: var(--frost-silver);
  max-width: 60ch;
}

/* ===== 步骤列表 ===== */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 4px;
  border-bottom: 1px solid var(--faq-hairline);
}

.page-faq .faq-steps li:first-child {
  border-top: 1px solid var(--faq-hairline);
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ice-blue);
  padding-top: 5px;
}

.page-faq .faq-steps p {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ice-white);
}

.page-faq .faq-tip {
  margin-top: 20px;
  padding: 14px 18px;
  border-left: 2px solid var(--aurora-purple);
  background: linear-gradient(90deg, rgba(142, 123, 242, 0.13), rgba(142, 123, 242, 0) 82%);
  font-size: 14px;
  line-height: 1.75;
  color: var(--frost-silver);
}

.page-faq .faq-tip a {
  color: var(--ice-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 155, 240, 0.4);
}

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

/* ===== 图文分栏 ===== */
.page-faq .faq-split {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-split .faq-steps {
  margin-top: 0;
}

.page-faq .faq-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--crack-blue);
  background: var(--faq-panel-fill);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85);
}

.page-faq .faq-figure-cap {
  margin: 12px 2px 2px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--frost-silver);
}

/* ===== 周期卡片 ===== */
.page-faq .faq-cycle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-cycle {
  position: relative;
  padding: 16px 16px 20px;
  border: 1px solid var(--crack-blue);
  background: linear-gradient(180deg, rgba(11, 21, 38, 0.9), rgba(5, 11, 24, 0.9));
  min-width: 0;
}

.page-faq .faq-cycle::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ice-blue), var(--aurora-purple));
  opacity: 0.5;
}

.page-faq .faq-cycle-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--neon-cyan);
}

.page-faq .faq-cycle-name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ice-white);
}

.page-faq .faq-cycle-desc {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--frost-silver);
}

/* ===== 档位面板 ===== */
.page-faq .faq-panel-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-panel {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--crack-blue);
  background: var(--faq-panel-fill);
  min-width: 0;
}

.page-faq .faq-panel .heading-3 {
  margin: 0;
}

.page-faq .faq-panel-note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--frost-silver);
}

.page-faq .faq-panel-note--last {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--faq-hairline);
}

.page-faq .faq-tier-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-tier-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--faq-hairline);
}

.page-faq .faq-tier-list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-tier-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--frost-silver);
  flex: 0 0 auto;
}

.page-faq .faq-tier-name {
  font-size: 15px;
  color: var(--ice-white);
  margin-left: auto;
}

.page-faq .faq-tier-value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--neon-cyan);
  margin-left: auto;
  white-space: nowrap;
}

/* ===== 折叠速答 ===== */
.page-faq .faq-accordion {
  margin-top: clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-accordion .accordion-item:first-child {
  border-top: 1px solid var(--faq-hairline);
}

.page-faq .faq-accordion .accordion-trigger {
  width: 100%;
  text-align: left;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ice-white);
  padding: 18px 34px 18px 4px;
  position: relative;
}

.page-faq .faq-accordion .accordion-trigger::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--ice-blue);
}

.page-faq .faq-accordion .accordion-item.is-open .accordion-trigger::after {
  content: "–";
  color: var(--neon-cyan);
}

.page-faq .faq-accordion .accordion-trigger:hover {
  color: var(--ice-blue);
}

.page-faq .faq-accordion .accordion-panel {
  padding: 0 20px 20px 4px;
}

.page-faq .faq-accordion .accordion-panel p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--frost-silver);
}

.page-faq .faq-accordion .accordion-panel a {
  color: var(--ice-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 155, 240, 0.4);
}

.page-faq .faq-accordion .accordion-panel a:hover {
  border-bottom-color: var(--ice-blue);
}

/* ===== 平板与桌面 ===== */
@media (min-width: 700px) {
  .page-faq .faq-hero-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 28px;
  }

  .page-faq .faq-cycle-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-panel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.18fr) minmax(240px, 0.82fr);
    align-items: start;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.34fr) minmax(240px, 0.66fr);
    align-items: end;
  }

  .page-faq .faq-hero-visual {
    margin: 0 0 4px auto;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    max-height: calc(100vh - var(--header-h) - 44px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 8px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index-link {
    position: relative;
    min-width: 0;
    padding: 12px 12px 12px 20px;
    border: 0;
    border-left: 1px solid var(--crack-blue);
    background: transparent;
  }

  .page-faq .faq-index-link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--ice-blue), var(--aurora-purple));
    transform: scaleY(0);
    transform-origin: top center;
    transition: transform 240ms ease;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible,
  .page-faq .faq-index-link.is-active {
    border-left-color: transparent;
    background: linear-gradient(90deg, rgba(61, 155, 240, 0.14), rgba(61, 155, 240, 0) 78%);
  }

  .page-faq .faq-index-link:hover::before,
  .page-faq .faq-index-link:focus-visible::before,
  .page-faq .faq-index-link.is-active::before {
    transform: scaleY(1);
  }

  .page-faq .faq-index-sub {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 220ms ease, max-height 220ms ease;
  }

  .page-faq .faq-index-link:hover .faq-index-sub,
  .page-faq .faq-index-link:focus-visible .faq-index-sub,
  .page-faq .faq-index-link.is-active .faq-index-sub {
    opacity: 1;
    max-height: 60px;
  }
}

@media (min-width: 1240px) {
  .page-faq {
    --faq-rail: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-link,
  .page-faq .faq-index-link::before,
  .page-faq .faq-index-sub {
    transition: none;
  }
}
<<<END_CSS>>>