.page-faq {
  --faq-line: rgba(18, 74, 104, .16);
  --faq-ink-soft: rgba(5, 24, 38, .72);
  --faq-ink-mute: rgba(5, 24, 38, .55);
  --faq-pulse: rgba(53, 200, 255, .22);
  --faq-panel: rgba(5, 24, 38, .05);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding: 18px 18px 64px;
  overflow-x: clip;
}

.page-faq > * {
  max-width: var(--w-max);
  margin-inline: auto;
}

.page-faq .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .breadcrumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--faq-ink-mute);
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 6px;
  color: rgba(18, 74, 104, .4);
}

.page-faq .breadcrumb__link {
  color: var(--lane);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--dolphin);
  border-bottom-color: var(--dolphin);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--lane);
  margin: 0;
  display: inline-block;
  padding: 4px 9px;
  border: 1px solid var(--faq-line);
  border-radius: 0 8px 0 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 14px 0 12px;
  max-width: 17em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
  max-width: 40em;
}

/* 搜索台 */
.page-faq .faq-search {
  margin-top: 24px;
}

.page-faq .faq-search__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--faq-ink-mute);
  margin-bottom: 9px;
}

.page-faq .faq-search__box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  min-height: 52px;
  background: #fff;
  border: 1px solid var(--faq-line);
  border-radius: 2px 12px 2px 2px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-search__box:focus-within {
  border-color: var(--dolphin);
  box-shadow: 0 0 0 2px var(--dolphin), 0 0 0 9px var(--faq-pulse);
  animation: faq-pulse 1.2s var(--ease) 1;
}

.page-faq .faq-search__icon {
  width: 18px;
  height: 18px;
  flex: none;
  color: var(--lane);
}

.page-faq .faq-search__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  padding: 14px 0;
  appearance: none;
}

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

.page-faq .faq-search__input::placeholder {
  color: rgba(5, 24, 38, .42);
}

.page-faq .faq-hot {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-hot__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  background: rgba(255, 255, 255, .6);
  border: 1px solid var(--faq-line);
  border-radius: 0 9px 0 0;
  transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-hot__no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--coral);
}

.page-faq .faq-hot__link:hover,
.page-faq .faq-hot__link:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.page-faq .faq-hot__link:focus-visible {
  outline: 2px solid var(--dolphin);
  outline-offset: 2px;
}

/* 首屏图 */
.page-faq .faq-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: 2px 16px 2px 2px;
  background: var(--pool);
}

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

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--foam), var(--dolphin) 58%, var(--coral));
}

.page-faq .faq-figure figcaption,
.page-faq .faq-inline-figure figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--faq-ink-mute);
  padding: 8px 2px 0;
}

/* 双栏 */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  margin-top: 44px;
}

/* 问题索引 */
.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--faq-ink-mute);
  margin: 0 0 14px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-faq .faq-index__list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--foam), rgba(47, 212, 208, .12));
}

.page-faq .faq-index__item {
  position: relative;
  margin-bottom: 12px;
}

.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: .55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--lane);
  transition: border-color .16s var(--ease), background .16s var(--ease);
}

.page-faq .faq-index__item:hover::before {
  border-color: var(--foam);
  background: var(--foam);
}

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  padding: 2px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  transition: color .16s var(--ease);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--faq-ink-mute);
  padding-top: 3px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--lane);
}

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

/* 章节 */
.page-faq .faq-sec {
  padding-top: 26px;
  border-top: 1px solid var(--faq-line);
  margin-top: 30px;
  scroll-margin-top: 84px;
}

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

.page-faq .section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .lane-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--lane);
  padding: 2px 7px;
  border: 1px solid var(--faq-line);
  border-radius: 0 7px 0 0;
  transition: color .36s var(--ease), border-color .36s var(--ease), background .36s var(--ease);
}

.page-faq .section-head.is-visible .lane-no {
  color: var(--ink);
  border-color: var(--foam);
  background: rgba(47, 212, 208, .16);
}

.page-faq .faq-sec h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(20px, 4.2vw, 30px);
  line-height: 1.3;
  letter-spacing: -.01em;
  margin: 0;
}

/* 问答折页 */
.page-faq .qa {
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 84px;
}

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa__summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 34px 16px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--dolphin);
  outline-offset: 2px;
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--coral);
  padding-top: 4px;
  flex: none;
}

.page-faq .qa__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: -.01em;
  transition: color .16s var(--ease);
}

.page-faq .qa__summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 21px;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--lane);
  border-bottom: 2px solid var(--lane);
  transform: rotate(45deg);
  transition: transform .18s var(--ease), border-color .18s var(--ease), top .18s var(--ease);
}

.page-faq .qa[open] .qa__summary::after {
  transform: rotate(-135deg);
  border-color: var(--coral);
  top: 25px;
}

.page-faq .qa__summary:hover .qa__title {
  color: var(--lane);
}

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

.page-faq .qa__panel {
  position: relative;
  background: var(--faq-panel);
  padding: 16px 18px 18px 20px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-faq .qa__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--foam), var(--dolphin));
}

.page-faq .qa__panel p {
  margin: 0 0 .8em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

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

.page-faq .qa__panel .link-arrow {
  display: inline-block;
  margin-top: 2px;
  font-size: 13px;
  font-weight: 700;
  color: var(--lane);
  text-decoration: none;
  border-bottom: 2px solid var(--foam);
  padding-bottom: 1px;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .qa__panel .link-arrow::after {
  content: " →";
  font-family: var(--font-mono);
}

.page-faq .qa__panel .link-arrow:hover,
.page-faq .qa__panel .link-arrow:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--coral);
}

/* 章节内插图 */
.page-faq .faq-inline-figure {
  margin: 16px 0 20px;
  max-width: 260px;
}

.page-faq .faq-inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px 14px 2px 2px;
  background: var(--pool);
}

/* 比分刻度 */
.page-faq .faq-scale {
  margin: 16px 0 0;
  padding: 12px 14px 8px;
  background: rgba(47, 212, 208, .12);
  border-left: 3px solid var(--foam);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .faq-scale__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-scale figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--faq-ink-mute);
  margin-top: 6px;
}

/* 帮助收尾 */
.page-faq .faq-sec--help .section-head {
  margin-bottom: 14px;
}

.page-faq .faq-help {
  background: var(--ink);
  color: var(--paper);
  padding: 26px 20px 24px;
  border-radius: 2px 20px 2px 2px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, var(--foam), var(--dolphin));
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(53, 200, 255, .22);
  pointer-events: none;
}

.page-faq .faq-help__lede {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 228, .8);
  max-width: 44em;
}

.page-faq .faq-contact {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .faq-contact__key {
  color: rgba(157, 184, 198, .9);
  letter-spacing: .1em;
  min-width: 40px;
}

.page-faq .faq-contact__val {
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-help__actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 10px 0 0;
  transition: transform .16s var(--ease), background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-help__actions .btn--primary {
  background: var(--dolphin);
  color: var(--ink);
  border: 1px solid var(--dolphin);
}

.page-faq .faq-help__actions .btn--primary:hover {
  background: var(--foam);
  border-color: var(--foam);
}

.page-faq .faq-help__actions .btn--ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid rgba(244, 239, 228, .38);
}

.page-faq .faq-help__actions .btn--ghost:hover {
  border-color: var(--foam);
  color: var(--foam);
}

.page-faq .faq-help__actions .btn:focus-visible {
  outline: 2px solid var(--dolphin);
  outline-offset: 3px;
}

@keyframes faq-pulse {
  0% { box-shadow: 0 0 0 2px var(--dolphin), 0 0 0 0 rgba(53, 200, 255, .34); }
  70% { box-shadow: 0 0 0 2px var(--dolphin), 0 0 0 10px rgba(53, 200, 255, 0); }
  100% { box-shadow: 0 0 0 2px var(--dolphin), 0 0 0 9px var(--faq-pulse); }
}

@media (min-width: 640px) {
  .page-faq .faq-hot__link {
    font-size: 13px;
  }

  .page-faq .qa__panel {
    padding: 18px 22px 20px 24px;
  }

  .page-faq .qa__title {
    font-size: 17px;
  }

  .page-faq .faq-help {
    padding: 32px 28px 30px;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding: 32px calc(var(--rail-right) + 28px) 96px calc(var(--rail-left) + 28px);
  }

  .page-faq .breadcrumb {
    margin-bottom: 26px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 46px;
  }

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }

  .page-faq .faq-body {
    margin-top: 54px;
    gap: 48px;
  }

  .page-faq .faq-inline-figure {
    max-width: 300px;
    float: right;
    margin: 6px 0 16px 26px;
  }

  .page-faq .faq-sec {
    padding-top: 30px;
    margin-top: 38px;
  }

  .page-faq .faq-sec::after {
    content: "";
    display: block;
    clear: both;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-sec {
    scroll-margin-top: calc(var(--header-h) + 24px);
  }

  .page-faq .qa {
    scroll-margin-top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search__box:focus-within {
    animation: none;
    box-shadow: 0 0 0 2px var(--dolphin);
  }

  .page-faq .qa__summary::after,
  .page-faq .faq-hot__link,
  .page-faq .faq-index__item::before {
    transition: none;
  }
}
<<<END>>>