.page-faq {
  --faq-rail: 258px;
  --faq-body-text: #C7D6CD;
  --faq-gap: clamp(28px, 5vw, 88px);
  background: var(--ink-0);
  color: var(--fog);
  overflow-x: clip;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 86% -14%, rgba(217, 255, 60, 0.16), transparent 62%),
    linear-gradient(155deg, var(--ink-0) 0%, var(--ink-1) 54%, var(--ink-2) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(28, 59, 48, 0.55) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(28, 59, 48, 0.35) 0 1px, transparent 1px 96px);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--lime), transparent);
  opacity: 0.55;
}

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

.page-faq .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__title {
  margin: 8px 0 18px;
  font-size: clamp(30px, 5.6vw, 64px);
  line-height: 1.08;
  max-width: 16em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--moss);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-dot {
  width: 6px;
  height: 6px;
  background: var(--lime);
  display: inline-block;
}

.page-faq .faq-body {
  padding: clamp(28px, 4vw, 48px) 0 clamp(64px, 9vw, 132px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

/* 主题索引轨 */
.page-faq .faq-rail {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--moss);
  font-family: var(--font-sans);
}

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

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail .rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--fog);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-rail .rail__link:hover {
  border-color: var(--lime);
  color: var(--lime-mist);
}

.page-faq .faq-rail .rail__link[aria-current="true"] {
  border-color: var(--lime);
  background: rgba(217, 255, 60, 0.08);
  color: var(--lime);
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
}

.page-faq .faq-rail .rail__link[aria-current="true"] .faq-rail__no {
  color: var(--lime);
}

.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--moss);
}

.page-faq .faq-rail__tip {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--moss);
  letter-spacing: 0.04em;
}

/* 章节 */
.page-faq .faq-sec {
  padding-block: clamp(30px, 5vw, 56px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-head__no {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  color: var(--lime);
  opacity: 0.42;
  letter-spacing: -0.02em;
}

.page-faq .faq-head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.12;
}

.page-faq .faq-head__text p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body-text);
}

/* 图片 */
.page-faq .faq-figure {
  grid-column: 1 / -1;
  margin: 22px 0 0;
}

.page-faq .faq-figure--wide {
  margin-top: clamp(24px, 3vw, 36px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-2), var(--ink-1));
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--moss);
  letter-spacing: 0.04em;
}

/* 条目 */
.page-faq .acc__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-trigger {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) 16px;
  gap: 8px 10px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  color: var(--fog);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-trigger:hover {
  color: var(--lime-mist);
}

.page-faq .faq-trigger:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-faq .faq-trigger[aria-expanded="true"] {
  color: var(--lime);
}

.page-faq .faq-trigger__no {
  font-family: var(--font-mono);
  font-size: 12px;
  padding-top: 5px;
  color: var(--moss);
  letter-spacing: 0.08em;
}

.page-faq .faq-sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--ink-3);
  transition: background 0.18s var(--ease);
}

.page-faq .faq-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-trigger:hover .faq-sign::before,
.page-faq .faq-trigger:hover .faq-sign::after,
.page-faq .faq-trigger[aria-expanded="true"] .faq-sign::before,
.page-faq .faq-trigger[aria-expanded="true"] .faq-sign::after {
  background: var(--lime);
}

.page-faq .faq-trigger[aria-expanded="true"] .faq-sign {
  transform: rotate(45deg);
}

.page-faq .faq-panel {
  padding: 0 0 24px calc(2.6em + 10px);
}

.page-faq .faq-panel p {
  margin: 0 0 12px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

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

/* 步骤 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-body-text);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  opacity: 0.75;
  padding-top: 3px;
}

.page-faq .faq-steps strong {
  color: var(--fog);
  font-weight: 600;
}

.page-faq .faq-note {
  border-left: 2px solid var(--alert);
  padding: 2px 0 2px 14px;
  margin-top: 16px !important;
  font-size: 13.5px !important;
  line-height: 1.75 !important;
  color: var(--moss) !important;
  max-width: 38em;
}

/* 术语速查 */
.page-faq .faq-terms {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(14, 58, 44, 0.6), rgba(7, 32, 25, 0.25));
  display: grid;
  gap: 16px;
}

.page-faq .faq-term dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
  margin-bottom: 6px;
}

.page-faq .faq-term dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-body-text);
}

/* 邮件要点 */
.page-faq .faq-mail {
  margin: 4px 0 clamp(24px, 3vw, 36px);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--lime);
  background: linear-gradient(158deg, rgba(14, 58, 44, 0.72), rgba(10, 18, 32, 0.7));
}

.page-faq .faq-mail__title {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--moss);
}

.page-faq .faq-mail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 14px;
}

.page-faq .faq-mail__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--moss);
  word-break: break-word;
}

/* 相关页面 */
.page-faq .faq-links {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 3vw, 38px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  background: var(--ink-1);
  color: var(--fog);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--lime);
}

.page-faq .faq-links a:hover {
  background: var(--ink-2);
  color: var(--lime-mist);
}

@media (min-width: 700px) {
  .page-faq .faq-figure {
    grid-column: auto;
  }

  .page-faq .faq-head--split {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 280px);
    align-items: start;
  }

  .page-faq .faq-head--split .faq-figure {
    margin-top: 4px;
  }

  .page-faq .faq-terms {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    border-top: 0;
    padding-top: 0;
  }

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

  .page-faq .faq-rail__list > li {
    flex: 0 0 auto;
  }

  .page-faq .faq-rail .rail__link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 10px;
    padding: 11px 0 11px 14px;
    border: 0;
    border-left: 1px solid var(--line);
    white-space: normal;
    font-size: 14px;
    background: none;
  }

  .page-faq .faq-rail .rail__link:hover {
    border-left-color: var(--lime-mist);
    background: none;
  }

  .page-faq .faq-rail .rail__link[aria-current="true"] {
    border-left-color: var(--lime);
    background: none;
  }

  .page-faq .faq-head--split {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 320px);
    gap: 14px 26px;
  }

  .page-faq .faq-panel {
    padding-left: calc(2.6em + 10px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-sign,
  .page-faq .faq-trigger,
  .page-faq .faq-rail .rail__link,
  .page-faq .faq-links a {
    transition: none;
  }

  .page-faq .faq-trigger[aria-expanded="true"] .faq-sign {
    transform: rotate(0deg);
  }
}
<<<PAGE_CSS_END>>>