.page-faq {
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-sticky-top: 28px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(24px, 4.6vw, 52px) 0 clamp(48px, 8vw, 92px);
  overflow: hidden;
}

.page-faq .faq-hero .breadcrumbs {
  font-size: var(--t--1);
}

.page-faq .faq-hero .breadcrumbs a {
  color: var(--ice);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumbs a:hover,
.page-faq .faq-hero .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(2rem, 6.2vw, 4.1rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  max-width: 48ch;
  margin: 0;
  font-size: var(--t-1);
  line-height: 1.75;
  color: var(--ice);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.page-faq .faq-hero__jump {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 通用章节头 ---------- */
.page-faq .faq-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-faq .faq-head .eyebrow {
  color: var(--slate);
}

.page-faq .section__title {
  margin: 12px 0 14px;
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-faq .faq-head .lead {
  margin: 0;
  color: var(--slate);
}

/* ---------- 入门两步 ---------- */
.page-faq .faq-cols {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-track {
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ripple);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--ink);
}

.page-faq .faq-track--b {
  border-top-color: var(--cyan);
}

.page-faq .faq-track__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 20px;
  font-size: var(--t-1);
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-track__title .num {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ink-2);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .faq-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-steps__item::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 32px;
  bottom: -16px;
  width: 2px;
  background: var(--line);
}

.page-faq .faq-steps__item:last-child::before {
  display: none;
}

.page-faq .faq-steps__n {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  font-size: 0.8125rem;
  line-height: 1;
  color: var(--ink);
  background: var(--paper);
  border-radius: var(--pill);
}

.page-faq .faq-steps__body h4 {
  margin: 3px 0 6px;
  font-size: var(--t-0);
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-steps__body p {
  margin: 0;
  font-size: var(--t-0);
  line-height: 1.7;
  color: var(--ink-2);
}

.page-faq .faq-track__out {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: auto 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
  font-size: var(--t--1);
  line-height: 1.65;
  color: var(--slate);
}

.page-faq .faq-track__out span {
  font-weight: 500;
  color: var(--ink);
}

/* ---------- 版本核对 ---------- */
.page-faq .faq-check {
  padding-top: clamp(44px, 7vw, 88px);
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-faq .faq-check .faq-head .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-check .section__title {
  color: var(--paper);
}

.page-faq .faq-check .faq-head .lead {
  color: var(--ice);
}

.page-faq .faq-check__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-check__cap {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--t--1);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ice);
  opacity: 0.72;
}

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

.page-faq .faq-check__nav ol::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-check__nav a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--pill);
  white-space: nowrap;
  font-size: var(--t--1);
  color: var(--ice);
  text-decoration: none;
  background: rgba(191, 215, 232, 0.08);
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-check__nav a:hover,
.page-faq .faq-check__nav a:focus-visible {
  background: var(--ink-2);
  color: var(--cyan);
}

.page-faq .faq-check__nav a .num {
  color: var(--cyan);
}

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  padding: clamp(18px, 3vw, 26px) 0;
  border-top: 1px solid var(--line-inv);
}

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

.page-faq .faq-step__n {
  font-size: clamp(1.6rem, 4vw, 2.75rem);
  line-height: 0.92;
  color: var(--cyan);
}

.page-faq .faq-step__body h3 {
  margin: 0 0 8px;
  font-size: var(--t-1);
  font-weight: 500;
  color: var(--paper);
}

.page-faq .faq-step__body p {
  max-width: 56ch;
  margin: 0;
  font-size: var(--t-0);
  line-height: 1.75;
  color: var(--ice);
}

.page-faq .faq-check__figure {
  margin: clamp(22px, 4vw, 38px) 0 0;
}

.page-faq .faq-check__figure img {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ---------- 反馈字段 ---------- */
.page-faq .faq-form {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-form__step {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
}

.page-faq .faq-form__n {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 16px;
  font-size: var(--t--1);
  font-weight: 500;
  color: var(--slate);
}

.page-faq .faq-form__n .num {
  font-size: 1.75rem;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-form__fields {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-form__fields dt {
  margin-bottom: 4px;
  font-size: var(--t-0);
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-form__fields dd {
  margin: 0;
  font-size: var(--t-0);
  line-height: 1.7;
  color: var(--ink-2);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 12px;
  align-items: start;
}

.page-faq .faq-qa details {
  padding: 16px 18px;
  background: var(--ripple);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-qa details[open] {
  background: var(--paper);
  border-left-color: var(--cyan);
}

.page-faq .faq-qa summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  list-style: none;
  cursor: pointer;
  font-size: var(--t-0);
  font-weight: 500;
  color: var(--ink);
}

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

.page-faq .faq-qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-qa details[open] summary::after {
  content: "–";
  color: var(--orange);
}

.page-faq .faq-qa__a {
  margin: 10px 0 0;
  font-size: var(--t-0);
  line-height: 1.7;
  color: var(--ink-2);
}

/* ---------- 自检表 ---------- */
.page-faq .faq-tablewrap {
  overflow-x: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: var(--t-0);
}

.page-faq .faq-table__cap {
  padding: 14px 16px 0;
  text-align: left;
  font-size: var(--t--1);
  color: var(--slate);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table thead th {
  background: var(--ripple);
  font-family: var(--font-mono);
  font-size: var(--t--1);
  font-weight: 400;
  color: var(--slate);
  white-space: nowrap;
}

.page-faq .faq-table tbody td:first-child {
  font-weight: 500;
  color: var(--ink);
}

.page-faq .faq-table tbody td {
  color: var(--ink-2);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-checklist__note {
  max-width: 70ch;
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: var(--t-0);
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-checklist__note a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-underline-offset: 4px;
}

.page-faq .faq-checklist__note a:hover {
  color: var(--ink-2);
}

/* ---------- 联系收束 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  padding: clamp(24px, 4vw, 46px);
  background: var(--ink-2);
  border-radius: var(--radius-lg);
}

.page-faq .faq-help .section__title {
  margin-top: 0;
  color: var(--paper);
}

.page-faq .faq-help .lead {
  max-width: 42ch;
  margin: 0 0 22px;
  font-size: var(--t-0);
  line-height: 1.75;
  color: var(--ice);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-inv);
}

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

.page-faq .faq-help__k {
  font-size: var(--t--1);
  line-height: 1.7;
  color: var(--cyan);
}

.page-faq .faq-help__v {
  font-size: var(--t-0);
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-hero__figure {
    order: 2;
  }

  .page-faq .faq-hero__text {
    order: 1;
  }
}

@media (min-width: 780px) {
  .page-faq .faq-qa {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 5fr 7fr;
  }

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

@media (min-width: 920px) {
  .page-faq .faq-check__grid {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .faq-check__nav ol {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-left: 14px;
    border-left: 2px solid var(--line-inv);
  }

  .page-faq .faq-check__nav a {
    background: none;
    border-radius: 0;
    padding: 7px 0;
  }

  .page-faq .faq-check__nav a:hover,
  .page-faq .faq-check__nav a:focus-visible {
    background: none;
    color: var(--cyan);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-help {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-qa details,
  .page-faq .faq-check__nav a {
    transition: none;
  }
}
<<<END>>>