.page-faq {
  --faq-hair: 1px solid rgba(42, 54, 112, 0.75);
  --faq-glow: 0 0 16px rgba(63, 240, 228, 0.18);
  position: relative;
  color: var(--paper-100);
  font-family: var(--font-head);
  line-height: 1.75;
  background:
    linear-gradient(180deg, var(--ink-900) 0%, rgba(26, 17, 64, 0.92) 48%, var(--ink-900) 100%);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

.page-faq p {
  margin: 0 0 10px;
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 4vw, 40px) 0 clamp(30px, 5vw, 56px);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto auto;
  width: min(720px, 78%);
  height: 150%;
  background: linear-gradient(140deg, rgba(63, 240, 228, 0.12), rgba(26, 17, 64, 0) 68%);
  transform: skewX(-9deg);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(63, 240, 228, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 240, 228, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 90% at 12% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 90% at 12% 0%, #000 0%, transparent 72%);
  z-index: -1;
  pointer-events: none;
}

.page-faq .hy-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate-400);
}

.page-faq .hy-breadcrumb__link {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 240, 228, 0.4);
}

.page-faq .hy-breadcrumb__link:hover {
  border-bottom-color: var(--cyan-400);
}

.page-faq .hy-breadcrumb__sep {
  color: var(--mist-600);
}

.page-faq .faq-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--cyan-400);
  margin: 0 0 14px;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(26px, 5.2vw, 48px);
  line-height: 1.24;
  letter-spacing: 0.04em;
  font-weight: 800;
  color: var(--white);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--slate-400);
  margin: 0 0 clamp(22px, 3vw, 32px);
}

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

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: var(--faq-hair);
  border-radius: var(--radius);
  background: rgba(16, 26, 61, 0.55);
  font-size: 13px;
  color: var(--slate-400);
}

.page-faq .faq-hero__facts .hy-mono {
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan-400);
  letter-spacing: 0.02em;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
}

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

/* ---------- 左侧索引 ---------- */

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

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--slate-400);
  margin: 0 0 12px;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 9px 12px;
  border: var(--faq-hair);
  border-left: 2px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--slate-400);
  text-decoration: none;
  background: rgba(16, 26, 61, 0.5);
  transition: color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}

.page-faq .faq-index__link:hover {
  color: var(--paper-100);
  border-color: var(--cyan-400);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--mist-600);
  letter-spacing: 0.04em;
}

.page-faq .faq-index__link[aria-current="location"] {
  color: var(--white);
  border-left-color: var(--cyan-400);
  background: rgba(63, 240, 228, 0.1);
}

.page-faq .faq-index__link[aria-current="location"] .faq-index__num {
  color: var(--cyan-400);
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-sec {
  scroll-margin-top: 128px;
  padding: clamp(28px, 4.5vw, 48px) 0;
  border-top: var(--faq-hair);
}

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

.page-faq .faq-sec__head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-sec__num {
  display: block;
  font-size: clamp(32px, 5vw, 50px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan-400);
  opacity: 0.6;
  margin-bottom: 6px;
}

.page-faq .faq-sec__title {
  margin: 0 0 10px;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.35;
  letter-spacing: 0.04em;
  font-weight: 800;
  color: var(--paper-100);
}

.page-faq .faq-sec__lead {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  color: var(--slate-400);
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

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

.page-faq .hy-figure__caption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--slate-400);
}

/* ---------- 四步流程 ---------- */

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

.page-faq .faq-flow__step {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-faq .faq-flow__step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(63, 240, 228, 0.5), rgba(42, 54, 112, 0.1));
}

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

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

.page-faq .faq-flow__node {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(63, 240, 228, 0.6);
  background: rgba(7, 12, 31, 0.85);
  color: var(--cyan-400);
  font-size: 15px;
  font-weight: 700;
  box-shadow: var(--faq-glow);
}

.page-faq .faq-flow__body {
  min-width: 0;
  padding-top: 4px;
}

.page-faq .faq-flow__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper-100);
}

.page-faq .faq-flow__body p {
  font-size: 15px;
  color: var(--slate-400);
}

.page-faq .faq-flow__check {
  margin: 8px 0 0;
  padding: 8px 12px;
  border-left: 2px solid var(--teal-500);
  background: rgba(18, 163, 138, 0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  color: var(--paper-100);
}

/* ---------- 兼容对照 ---------- */

.page-faq .faq-browser__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

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

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

.page-faq .faq-compat__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 13px 0;
  border-bottom: var(--faq-hair);
}

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

.page-faq .faq-compat__row--head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate-400);
  text-transform: uppercase;
  border-bottom-color: rgba(63, 240, 228, 0.35);
}

.page-faq .faq-compat__name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-100);
  letter-spacing: 0.02em;
}

.page-faq .faq-compat__col {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--slate-400);
  min-width: 0;
}

.page-faq .faq-browser__hint {
  margin: 16px 0 0;
  padding: 12px 14px;
  border: var(--faq-hair);
  border-left: 2px solid var(--orange-500);
  background: rgba(255, 122, 47, 0.07);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  color: var(--paper-100);
}

/* ---------- 登录自检 ---------- */

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

.page-faq .faq-selfcheck__step {
  position: relative;
  padding: 0 0 0 30px;
  margin-bottom: 24px;
}

.page-faq .faq-selfcheck__step::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 17px;
  bottom: -24px;
  width: 1px;
  background: linear-gradient(180deg, rgba(63, 240, 228, 0.45), rgba(42, 54, 112, 0.1));
}

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

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

.page-faq .faq-selfcheck__dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--cyan-400);
  background: rgba(63, 240, 228, 0.2);
  box-shadow: 0 0 14px rgba(63, 240, 228, 0.5);
}

.page-faq .faq-selfcheck__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper-100);
}

.page-faq .faq-selfcheck__step p {
  font-size: 14px;
  color: var(--slate-400);
}

.page-faq .faq-selfcheck__ok {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--teal-500);
}

.page-faq .faq-selfcheck__note {
  margin: 22px 0 0;
  font-size: 14px;
  color: var(--slate-400);
  padding-left: 14px;
  border-left: 2px solid var(--mist-600);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-acc {
  border-top: var(--faq-hair);
}

.page-faq .faq-acc__item {
  border-bottom: var(--faq-hair);
}

.page-faq .faq-acc__summary {
  position: relative;
  display: block;
  padding: 16px 42px 16px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper-100);
  transition: color var(--dur-fast) var(--ease-out);
}

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

.page-faq .faq-acc__summary:hover {
  color: var(--cyan-400);
}

.page-faq .faq-acc__summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: transparent;
  transition: background var(--dur-fast) var(--ease-out);
}

.page-faq .faq-acc__item[open] > .faq-acc__summary::before {
  background: var(--cyan-400);
}

.page-faq .faq-acc__summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .faq-acc__item[open] > .faq-acc__summary::after {
  content: "−";
}

.page-faq .faq-acc__panel {
  padding: 0 24px 18px 16px;
}

.page-faq .faq-acc__panel p {
  font-size: 15px;
  color: var(--slate-400);
  max-width: 68ch;
}

/* ---------- 工单提示 ---------- */

.page-faq .faq-ticket {
  border: var(--faq-hair);
  border-left: 3px solid var(--orange-500);
  border-radius: var(--radius);
  background: var(--panel);
  padding: clamp(18px, 3vw, 28px);
}

.page-faq .faq-ticket__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--orange-500);
}

.page-faq .faq-ticket__tpl {
  margin: 0;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--cyan-400);
  background: rgba(7, 12, 31, 0.72);
  border: var(--faq-hair);
  border-radius: var(--radius);
  white-space: pre-wrap;
  overflow-x: auto;
}

.page-faq .faq-ticket__hint {
  margin: 14px 0 18px;
  font-size: 14px;
  color: var(--slate-400);
  max-width: 62ch;
}

.page-faq .faq-ticket__cta {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 继续浏览 ---------- */

.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-next__link {
  display: inline-block;
  padding: 10px 14px;
  border: var(--faq-hair);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--slate-400);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.page-faq .faq-next__link:hover {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-compat__row {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 14px;
  }

  .page-faq .faq-selfcheck {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 28px;
  }

  .page-faq .faq-selfcheck__step {
    padding: 30px 0 0;
    margin-bottom: 0;
  }

  .page-faq .faq-selfcheck__step::before {
    left: 20px;
    right: -28px;
    top: 7px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(63, 240, 228, 0.45), rgba(42, 54, 112, 0.12));
  }

  .page-faq .faq-selfcheck__step:nth-child(2n)::before {
    display: none;
  }

  .page-faq .faq-selfcheck__step:nth-child(2n+1):nth-last-child(-n+2)::before {
    display: none;
  }

  .page-faq .faq-selfcheck__dot {
    top: 0;
    left: 0;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    white-space: normal;
    border-left-width: 2px;
  }

  .page-faq .faq-browser__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-drop {
    padding-right: clamp(20px, 3vw, 48px);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-selfcheck {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-selfcheck__step:nth-last-child(1)::before,
  .page-faq .faq-selfcheck__step:nth-last-child(2)::before {
    display: block;
  }

  .page-faq .faq-selfcheck__step:nth-child(4n)::before {
    display: none;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-acc__summary,
  .page-faq .faq-next__link {
    transition: none;
  }

  .page-faq .faq-next__link:hover {
    transform: none;
  }

  .page-faq .faq-flow__node,
  .page-faq .faq-selfcheck__dot {
    box-shadow: none;
  }
}
<<<END>>>