.page-faq {
  --faq-rail: 232px;
  --sticky-top: 56px;
  --g: var(--volt);
  background: var(--snow);
  color: var(--ink);
}

.page-faq .crumbs {
  padding-top: clamp(14px, 3vw, 24px);
  font-size: 13px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border-bottom: var(--print);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  background: linear-gradient(158deg, rgba(36, 71, 232, 0.13), rgba(47, 155, 98, 0.1) 58%, rgba(226, 85, 30, 0.12));
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 12% 100%);
  z-index: 0;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--spring) 0 33%, var(--volt) 33% 66%, var(--autumn) 66% 100%);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(20px, 4vw, 34px);
  padding: clamp(20px, 4vw, 36px) 0 clamp(28px, 5vw, 48px);
}

.page-faq .faq-hero__main {
  max-width: 40em;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  max-width: 34em;
}

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

.page-faq .faq-hero__steps li {
  counter-increment: hs;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.6;
}

.page-faq .faq-hero__steps li::before {
  content: counter(hs, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 20px;
  height: 20px;
  color: var(--paper);
  background: var(--ink);
  text-align: center;
  border-radius: 2px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-hero__note {
  display: none;
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 16px 0 0;
  padding: 8px;
  background: var(--paper);
  border: 1px solid var(--frost);
  box-shadow: var(--sheet-shadow);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  background: var(--snow);
}

.page-faq .faq-figure figcaption {
  padding: 8px 4px 2px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-faq .faq-figure--hero {
  margin: 0;
  border: var(--print);
  transform: rotate(-0.6deg);
}

.page-faq .faq-figure--hero img {
  aspect-ratio: 4 / 3;
}

/* 目录 + 问答主体 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(34px, 6vw, 64px);
}

.page-faq .faq-dir {
  border-top: var(--print);
  padding-top: 10px;
}

.page-faq .faq-dir__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ash);
}

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

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

.page-faq .faq-dir__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 11px;
  background: var(--paper);
  border: 1px solid var(--frost);
  color: var(--ink);
  text-decoration: none;
  font-size: 13.5px;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-faq .faq-dir__link:hover,
.page-faq .faq-dir__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ink);
}

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

/* 分组 */
.page-faq .faq-group {
  padding-top: clamp(16px, 3vw, 26px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(24px, 4vw, 42px);
  border-top: 1px solid var(--frost);
}

.page-faq .faq-group--spring { --g: var(--spring); }
.page-faq .faq-group--volt { --g: var(--volt); }
.page-faq .faq-group--autumn { --g: var(--autumn); }
.page-faq .faq-group--sun { --g: var(--yellow); }
.page-faq .faq-group--red { --g: var(--red); }
.page-faq .faq-group--ink { --g: var(--ink); }

.page-faq .faq-group__head {
  position: sticky;
  top: var(--sticky-top);
  z-index: 3;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  align-items: center;
  padding: 10px 0 12px;
  background: var(--snow);
  border-bottom: 1px solid var(--frost);
}

.page-faq .faq-group__num {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--paper);
  background: var(--g);
  transform: skewX(-8deg);
}

.page-faq .faq-group--sun .faq-group__num {
  color: var(--ink);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__hint {
  grid-column: 2;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ash);
}

/* 问答条目 */
.page-faq .faq-qas {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.page-faq .qa {
  background: var(--paper);
  border: 1px solid var(--frost);
  border-left: 4px solid var(--g);
  box-shadow: var(--sheet-shadow);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .qa:hover {
  transform: translateY(-2px);
}

.page-faq .qa[open] {
  border-color: var(--ink);
  border-left-color: var(--g);
  box-shadow: 0 2px 0 var(--ink), 0 18px 30px -26px rgba(14, 19, 22, 0.9);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: start;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ash);
}

.page-faq .qa__t {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .qa__mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--ink);
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1px;
  background: var(--ink);
  transform: translateY(-50%);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.page-faq .qa__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 14px 16px;
}

.page-faq .qa__a > * + * {
  margin-top: 10px;
}

.page-faq .qa__do {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--frost);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.72;
}

.page-faq .qa__why {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--g);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ash);
}

.page-faq .qa__link {
  margin: 0;
  font-size: 13.5px;
}

.page-faq .qa__link a {
  color: var(--volt);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__link a:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 2px;
}

/* 步骤 */
.page-faq .qa__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: st;
}

.page-faq .qa__steps li {
  counter-increment: st;
  position: relative;
  padding: 0 0 14px 38px;
  font-size: 14px;
  line-height: 1.68;
}

.page-faq .qa__steps li::before {
  content: counter(st);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--paper);
  background: var(--g);
  border-radius: 50%;
}

.page-faq .faq-group--sun .qa__steps li::before {
  color: var(--ink);
}

.page-faq .qa__steps li::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 25px;
  bottom: 2px;
  width: 1px;
  background: var(--frost);
}

.page-faq .qa__steps li:last-child {
  padding-bottom: 0;
}

.page-faq .qa__steps li:last-child::after {
  display: none;
}

/* 字段清单 */
.page-faq .qa__fields {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .qa__fields li {
  display: grid;
  grid-template-columns: 5.6em 1fr;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dotted var(--frost);
  font-size: 13.5px;
  line-height: 1.6;
}

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

.page-faq .qa__fields b {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--g);
}

.page-faq .faq-group--sun .qa__fields b {
  color: var(--ink);
}

.page-faq .qa__fields span {
  color: var(--ash);
}

/* 邮件块 */
.page-faq .faq-mail {
  margin-top: 16px;
  padding: clamp(14px, 3vw, 22px);
  background: var(--paper);
  border: var(--print);
  display: grid;
  gap: 12px;
}

.page-faq .faq-mail__lead {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.6;
}

.page-faq .faq-mail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-mail__list li {
  display: grid;
  grid-template-columns: 6.6em 1fr;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.65;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--frost);
}

.page-faq .faq-mail__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-mail__key {
  font-weight: 700;
}

.page-faq .faq-mail__addr {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  word-break: break-all;
  padding-top: 10px;
  border-top: 1px dashed var(--frost);
}

.page-faq .faq-mail__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ash);
}

/* 延伸入口 */
.page-faq .faq-more {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-more__link {
  display: grid;
  gap: 3px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--frost);
  border-top: 3px solid var(--volt);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-more__link small {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--ash);
}

.page-faq .faq-more__link:hover,
.page-faq .faq-more__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ink);
  border-top-color: var(--autumn);
}

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

/* 桌面布局 */
@media (min-width: 720px) {
  .page-faq {
    --sticky-top: 64px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

@media (min-width: 980px) {
  .page-faq {
    --sticky-top: 76px;
  }

  .page-faq .faq-hero {
    padding-right: 28px;
  }

  .page-faq .faq-hero__note {
    display: block;
    position: absolute;
    top: 34px;
    right: 6px;
    z-index: 2;
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--ash);
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-dir {
    position: sticky;
    top: var(--sticky-top);
  }

  .page-faq .faq-dir__list {
    flex-direction: column;
    overflow: visible;
    gap: 6px;
  }

  .page-faq .faq-dir__link {
    justify-content: flex-start;
  }

  .page-faq .faq-figure--hero {
    margin-top: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-figure--hero,
  .page-faq .faq-dir__link,
  .page-faq .faq-more__link {
    transition: none;
    transform: none;
  }

  .page-faq .qa:hover,
  .page-faq .faq-dir__link:hover,
  .page-faq .faq-more__link:hover {
    transform: none;
  }
}
<<<END>>>