.page-faq {
  --faq-cut: 10px;
  --faq-soft: rgba(31, 224, 207, 0.1);
  --faq-soft-line: rgba(31, 224, 207, 0.38);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 44px) 0 clamp(36px, 7vw, 72px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 92% -30%, rgba(31, 224, 207, 0.16), transparent 62%),
    radial-gradient(80% 90% at 4% 120%, rgba(255, 90, 43, 0.1), transparent 60%),
    linear-gradient(180deg, #0A0F16 0%, var(--ink) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan-deep) 42%, var(--flame) 100%);
  opacity: 0.55;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .s33-crumbs {
  margin-bottom: clamp(20px, 4vw, 36px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 18px;
}

.page-faq .faq-hero__side {
  display: flex;
  align-items: flex-start;
}

.page-faq .faq-hero__side .s33-eyebrow {
  color: var(--cyan);
  writing-mode: horizontal-tb;
  letter-spacing: 0.24em;
  font-size: 12px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  letter-spacing: -0.02em;
  line-height: 1.06;
  font-size: clamp(30px, 6.4vw, 62px);
  color: var(--paper);
  max-width: 16em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--steel);
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding-right: 22px;
  border-right: 1px solid var(--line);
}

.page-faq .faq-hero__facts li:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-hero__facts .s33-num {
  color: var(--cyan);
  font-size: 20px;
  font-weight: 700;
}

/* ---------- 三件事 ---------- */
.page-faq .faq-top3 {
  padding-top: clamp(40px, 7vw, 76px);
}

.page-faq .faq-top3__head {
  max-width: 46ch;
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-top3__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.15;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-faq .faq-top3__head p {
  margin: 12px 0 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-top3__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-card {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-card p {
  margin: 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-card__note {
  margin-top: 12px !important;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px !important;
}

.page-faq .faq-card__no {
  display: block;
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.5;
  margin-bottom: 14px;
}

.page-faq .faq-card--entry {
  border-left: 3px solid var(--cyan);
  background: linear-gradient(150deg, rgba(31, 224, 207, 0.11), var(--ink-2) 58%);
}

.page-faq .faq-card--split {
  border: 0;
  border-top: 2px solid var(--flame);
  background: var(--ink-3);
  padding-left: 0;
  padding-right: 0;
  padding-bottom: 0;
}

.page-faq .faq-card--version {
  clip-path: polygon(0 0, calc(100% - var(--faq-cut) * 2) 0, 100% calc(var(--faq-cut) * 2), 100% 100%, 0 100%);
  background: linear-gradient(165deg, rgba(143, 211, 255, 0.14), var(--ink-2) 55%);
  border-color: rgba(143, 211, 255, 0.28);
  padding-right: 30px;
}

.page-faq .faq-card .s33-tag {
  display: inline-block;
  margin-top: 16px;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-top: clamp(36px, 6vw, 64px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-toc {
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: 18px 18px 20px;
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__list .s33-indexlink {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 10px 10px 8px;
  font-size: 14px;
  color: var(--steel);
  border-left: 2px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .faq-toc__list .s33-indexlink:hover,
.page-faq .faq-toc__list .s33-indexlink:focus-visible {
  color: var(--cyan-soft);
  border-left-color: var(--cyan-deep);
  background: rgba(31, 224, 207, 0.06);
}

.page-faq .faq-toc__list .s33-indexlink[aria-current] {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(31, 224, 207, 0.1);
}

.page-faq .faq-toc__no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  opacity: 0.85;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-bottom: clamp(34px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .faq-group__no {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--flame);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 28px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 4px 15px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--t) var(--ease), background var(--t) var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan-soft);
  background: rgba(31, 224, 207, 0.04);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan-deep);
  padding-top: 2px;
  min-width: 22px;
}

.page-faq .faq-item__txt {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.55;
  color: inherit;
  color: var(--paper);
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  position: relative;
  width: 10px;
  height: 10px;
  margin-top: 5px;
  transition: transform var(--t) var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  opacity: 0.75;
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 4px;
  width: 10px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 4px;
  top: 0;
  width: 2px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--flame);
}

.page-faq .faq-item__a {
  margin: 0 0 18px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--cyan-deep);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-step {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px 3px;
  font-family: var(--font-num);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink);
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%);
}

/* ---------- 版本分栏 ---------- */
.page-faq .faq-group__split {
  display: grid;
  gap: 22px;
}

.page-faq .faq-group__more {
  margin: 20px 0 0;
}

.page-faq .faq-figure--side {
  margin-top: 0;
}

/* ---------- 支持区 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
}

.page-faq .faq-support__item {
  padding: 18px 20px;
  background: var(--ink-2);
  border-left: 2px solid var(--line);
  transition: border-color var(--t) var(--ease);
}

.page-faq .faq-support__item:hover {
  border-left-color: var(--cyan);
}

.page-faq .faq-support__item h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-support__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-support__cta {
  padding: 22px;
  background: linear-gradient(135deg, rgba(255, 90, 43, 0.14), rgba(31, 224, 207, 0.08) 60%, var(--ink-2));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-support__cta p {
  margin: 0 0 16px;
  max-width: 42ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 焦点与动效 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-top3__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .faq-card--split {
    padding-left: 0;
    padding-right: 18px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-hero__side .s33-eyebrow {
    writing-mode: vertical-rl;
    padding-top: 6px;
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-figure--side {
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 104px;
  }
}
<<<END>>>