.page-faq {
  --faq-cut: 14px;
  --faq-line: rgba(46, 110, 108, 0.20);
  --faq-line-strong: rgba(46, 110, 108, 0.45);
  background: var(--ink-0);
  color: var(--paper);
  overflow-x: clip;
}

.page-faq a {
  color: inherit;
  text-decoration: none;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-faq .shell h2,
.page-faq .shell h3 {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--bar-h) + clamp(44px, 7vw, 88px)) 0 clamp(36px, 5vw, 60px);
  background:
    radial-gradient(880px 460px at 6% -8%, rgba(56, 242, 224, 0.13), transparent 62%),
    radial-gradient(680px 380px at 98% -4%, rgba(255, 176, 58, 0.08), transparent 60%),
    linear-gradient(180deg, var(--ink-1) 0%, var(--ink-0) 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(46, 110, 108, 0.16) 0 1px,
    transparent 1px 6px
  );
}

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

.page-faq .faq-hero .crumb {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 3vw, 36px);
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(30px, 5.2vw, 62px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 19ch;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-1);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-stat__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-index {
  list-style: none;
  margin: clamp(28px, 5vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-index > li {
  display: flex;
  background: var(--ink-1);
}

.page-faq .faq-index__link {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 16px 14px;
  border-left: 2px solid transparent;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--ink-2);
  border-left-color: var(--cyan);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-index__label {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

/* ---------- 区块骨架 ---------- */

.page-faq .faq-block {
  position: relative;
  padding: clamp(52px, 7vw, 92px) 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-block--lead {
  background: linear-gradient(180deg, var(--ink-1) 0%, var(--ink-0) 78%);
}

.page-faq .faq-block--last {
  border-bottom: 0;
}

.page-faq .faq-head {
  margin-bottom: clamp(26px, 3.5vw, 42px);
}

.page-faq .faq-head__num {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-head__num::after {
  content: "";
  width: 46px;
  height: 1px;
  background: var(--faq-line-strong);
}

.page-faq .faq-head__title {
  margin: 14px 0 0;
  font-size: clamp(25px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-faq .faq-head__note {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */

.page-faq .faq-group + .faq-group {
  margin-top: clamp(28px, 4vw, 40px);
}

.page-faq .faq-group__title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
  transition: background var(--t) var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(18, 64, 63, 0.4);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px 14px;
  align-items: start;
  padding: 18px clamp(8px, 2vw, 20px);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 6px;
}

.page-faq .faq-item__q {
  font-size: clamp(16px, 1.6vw, 18px);
  font-weight: 700;
  line-height: 1.6;
  transition: color var(--t) var(--ease);
}

.page-faq .faq-item > summary:hover .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 7px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}

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

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

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 clamp(8px, 2vw, 20px) 22px 40px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-item__body strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan-40);
  transition: border-color var(--t) var(--ease);
}

.page-faq .faq-item__body a:hover {
  border-bottom-color: var(--cyan);
}

@media (min-width: 720px) {
  .page-faq .faq-item__body {
    padding-left: 62px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item__body {
    animation: faq-reveal 220ms var(--ease) both;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 适配清单 ---------- */

.page-faq .media-frame {
  overflow: hidden;
}

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

.page-faq .tier-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 20px;
  padding: 0;
}

.page-faq .tier-list li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 9px 14px;
  border: 1px solid var(--faq-line-strong);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .tier-list li:hover {
  color: var(--cyan);
  border-color: var(--cyan-40);
}

.page-faq .adapt-wrap {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border: 1px solid var(--faq-line);
  background: var(--ink-1);
}

.page-faq .adapt {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.page-faq .adapt thead th {
  padding: 14px 18px;
  text-align: left;
  background: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border-bottom: 1px solid var(--faq-line);
  white-space: nowrap;
}

.page-faq .adapt td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--faq-line);
  vertical-align: top;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .adapt tbody tr {
  transition: background var(--t) var(--ease);
}

.page-faq .adapt tbody tr:hover {
  background: rgba(56, 242, 224, 0.05);
}

.page-faq .adapt td:first-child {
  color: var(--paper);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .adapt__tier {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
  white-space: nowrap;
}

.page-faq .adapt-foot {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 账号同步 ---------- */

.page-faq .sync-grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-faq .sync-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .sync-steps > li {
  position: relative;
  counter-increment: sync-step;
  padding: 20px 0 20px 56px;
  border-top: 1px solid var(--faq-line);
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .sync-steps {
  counter-reset: sync-step;
}

.page-faq .sync-steps > li::before {
  content: "S" counter(sync-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 23px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .sync-steps > li strong {
  display: block;
  margin-bottom: 6px;
  font-size: 17px;
  color: var(--paper);
}

.page-faq .sync-side {
  align-self: start;
}

.page-faq .sync-side__title {
  margin: 0 0 14px;
  font-size: 18px;
}

.page-faq .sync-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .sync-side__list li {
  position: relative;
  padding: 9px 0 9px 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .sync-side__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .sync-side__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 统计方式 ---------- */

.page-faq .dim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .dim {
  background: var(--ink-1);
  padding: 20px 18px 22px;
  transition: background var(--t) var(--ease);
}

.page-faq .dim:hover {
  background: var(--ink-2);
}

.page-faq .dim__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .dim h3 {
  margin: 12px 0 8px;
  font-size: 16px;
}

.page-faq .dim p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .stats-notes {
  display: grid;
  gap: 1px;
  margin-top: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
  border-top: 0;
}

.page-faq .stats-note {
  background: var(--ink-1);
  padding: 22px 20px;
}

.page-faq .stats-note--amber {
  box-shadow: inset 3px 0 0 0 var(--amber);
}

.page-faq .stats-note h3 {
  margin: 0 0 10px;
  font-size: 17px;
}

.page-faq .stats-note p {
  margin: 0;
  max-width: 76ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .stats-note a {
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan-40);
}

.page-faq .stats-note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 纠错与咨询 ---------- */

.page-faq .help-grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
}

.page-faq .help-sub {
  margin: 0 0 14px;
  font-size: 17px;
}

.page-faq .help-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .help-list li {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .help-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .help-contact {
  margin-top: 26px;
  border: 1px solid var(--faq-line-strong);
  background: var(--ink-1);
  padding: 20px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .help-contact__item {
  display: grid;
  gap: 5px;
  margin: 0 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .help-contact__key {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .help-contact__val {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .help-contact__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .help-side__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .help-side__note a {
  color: var(--cyan);
  border-bottom: 1px solid var(--cyan-40);
}

.page-faq .help-side__note a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 结尾动作 ---------- */

.page-faq .faq-cta {
  display: grid;
  gap: 18px;
  margin-top: clamp(36px, 5vw, 56px);
  padding: 24px 20px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(90deg, rgba(18, 64, 63, 0.65) 0%, rgba(6, 26, 28, 0.2) 100%);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.85fr);
    align-items: end;
  }

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

  .page-faq .sync-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(270px, 0.85fr);
  }

  .page-faq .stats-notes {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .help-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 28px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero,
  .page-faq .faq-block {
    padding-left: var(--rail-w);
  }

  .page-faq .faq-block .shell,
  .page-faq .faq-hero .shell {
    max-width: var(--shell);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>