.page-faq {
  --faq-side: 300px;
  --faq-hair: rgba(196, 211, 223, 0.22);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.page-faq .crumbs {
  margin-top: 1.25rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero__inner {
  padding-block: clamp(1.5rem, 5vw, 3.25rem) clamp(0.75rem, 3vw, 1.5rem);
}

.page-faq h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.2vw, 2.25rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__title {
  margin: 0.6rem 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.2vw, 3.6rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.025em;
}

.page-faq .faq-hero__lead {
  margin-top: 1.1rem;
  max-width: 46ch;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--faq-hair);
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-faq .faq-hero__facts .mono {
  flex: none;
  min-width: 2.4em;
  color: var(--cyan);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

@media (min-width: 760px) {
  .page-faq .faq-hero__facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 2rem;
    border-bottom: 1px solid var(--faq-hair);
  }
  .page-faq .faq-hero__facts li {
    border-bottom: 0;
  }
}

/* ---------- 结论卡 ---------- */
.page-faq .faq-quick {
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-quick__head {
  margin-bottom: 1.75rem;
}

.page-faq .quick {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-faq .quick__card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.35rem 1.15rem 1.2rem;
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.page-faq .quick__card:hover,
.page-faq .quick__card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--cyan);
}

.page-faq .quick__card--b {
  background: var(--steel);
  border-left: 8px solid var(--cyan);
}

.page-faq .quick__card--d {
  background: var(--violet);
}

.page-faq .quick__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq .quick__card p {
  margin: 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .quick__card p.quick__num {
  color: var(--orange);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.page-faq .quick__link {
  margin-top: auto;
  padding-top: 0.6rem;
  color: var(--cyan);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.page-faq .quick__link:hover,
.page-faq .quick__link:focus-visible {
  color: var(--orange);
}

@media (min-width: 640px) {
  .page-faq .quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .quick {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.25rem;
  }
  .page-faq .quick__card--a {
    grid-column: span 3;
  }
  .page-faq .quick__card--b {
    grid-column: span 4;
    margin-top: 1.5rem;
  }
  .page-faq .quick__card--c {
    grid-column: span 3;
    margin-top: 0.5rem;
  }
  .page-faq .quick__card--d {
    grid-column: span 2;
    margin-top: 2.1rem;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .kb-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 2.5rem);
  padding-block: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .kb-main > * + * {
  margin-top: clamp(2rem, 5vw, 3.25rem);
}

@media (min-width: 1024px) {
  .page-faq .kb-shell {
    grid-template-columns: minmax(0, 1fr) var(--faq-side);
    align-items: start;
  }
  .page-faq .kb-side {
    position: sticky;
    top: 1.5rem;
  }
}

.page-faq .kb-block__lead {
  margin: 0.9rem 0 0;
  max-width: 48ch;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.75;
}

.page-faq .kb-main a:not(.btn),
.page-faq .kb-terms__tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.page-faq .kb-main a:not(.btn):hover,
.page-faq .kb-terms__tail a:hover {
  color: var(--orange);
}

/* ---------- 四步排查 ---------- */
.page-faq .steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-faq .step {
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
  transition: border-color 0.18s var(--ease);
}

.page-faq .step[open] {
  background: var(--steel);
  border-color: rgba(0, 227, 206, 0.55);
}

.page-faq .step__sum {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .step__sum:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .step__num {
  flex: none;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--faq-hair);
  color: var(--mist);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.page-faq .step[open] .step__num {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .step__q {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-faq .step__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

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

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

.page-faq .step__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 0.18s var(--ease);
}

.page-faq .step[open] .step__mark::after {
  transform: scaleY(0);
}

.page-faq .step__body {
  padding: 0 1.1rem 1.1rem;
  font-size: 0.9375rem;
  line-height: 1.78;
}

.page-faq .step__body p {
  margin: 0.5rem 0 0;
  color: var(--silver);
}

.page-faq .step__body strong {
  color: var(--cyan);
  font-weight: 600;
}

.page-faq .kb-doc__figure {
  margin: 1.75rem 0 0;
}

.page-faq .media-frame {
  max-width: 100%;
}

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

/* ---------- 手机端兼容 ---------- */
.page-faq .kb-mobile {
  padding: clamp(1.25rem, 3.5vw, 2rem);
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
}

.page-faq .kb-mobile__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.page-faq .kb-mobile p {
  margin: 0.9rem 0 0;
  color: var(--silver);
  font-size: 0.9375rem;
  line-height: 1.78;
}

.page-faq .checks {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .checks li {
  display: flex;
  gap: 0.7rem;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .checks__dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 0.6rem;
  background: var(--orange);
}

.page-faq .kb-mobile__tail {
  color: var(--silver) !important;
}

@media (min-width: 880px) {
  .page-faq .kb-mobile__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 2rem;
  }
}

/* ---------- 注册与导航 ---------- */
.page-faq .kb-register {
  padding: clamp(1.25rem, 3.5vw, 2rem);
  background: var(--steel);
  border: 3px solid var(--line);
  border-top-width: 8px;
  border-top-color: var(--cyan);
  box-shadow: var(--shadow);
}

.page-faq .reg {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-faq .reg li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
}

.page-faq .reg .mono {
  padding-top: 0.2rem;
  color: var(--cyan);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-faq .reg h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-faq .reg p {
  margin: 0.3rem 0 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.72;
}

.page-faq .kb-register__tail {
  margin: 1.5rem 0 0;
  color: var(--silver);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---------- 右侧准备清单 ---------- */
.page-faq .prep {
  padding: 1.2rem 1.1rem 1.3rem;
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
  transition: border-color 0.18s var(--ease);
}

.page-faq .prep__kicker {
  margin: 0;
  color: var(--orange);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.page-faq .prep__title {
  margin: 0.35rem 0 0.95rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 900;
  line-height: 1.35;
}

.page-faq .prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.page-faq .prep__item {
  position: relative;
}

.page-faq .prep__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .prep__label {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  color: var(--silver);
  font-size: 0.875rem;
  line-height: 1.6;
  cursor: pointer;
}

.page-faq .prep__box {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 0.1rem;
  border: 2px solid var(--mist);
  background: transparent;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .prep__input:checked + .prep__label .prep__box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .prep__input:checked + .prep__label .prep__box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg);
}

.page-faq .prep__input:checked + .prep__label {
  color: var(--mist);
}

.page-faq .prep__input:focus-visible + .prep__label .prep__box {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .prep__label:hover .prep__box {
  border-color: var(--cyan);
}

.page-faq .prep__meter {
  display: flex;
  gap: 6px;
  margin-top: 1.1rem;
}

.page-faq .prep__meter span {
  flex: 1 1 0;
  height: 5px;
  background: var(--faq-hair);
  transition: background 0.18s var(--ease);
}

.page-faq .prep:has(#prep-1:checked) .prep__meter span:nth-child(1),
.page-faq .prep:has(#prep-2:checked) .prep__meter span:nth-child(2),
.page-faq .prep:has(#prep-3:checked) .prep__meter span:nth-child(3),
.page-faq .prep:has(#prep-4:checked) .prep__meter span:nth-child(4),
.page-faq .prep:has(#prep-5:checked) .prep__meter span:nth-child(5) {
  background: var(--cyan);
}

.page-faq .prep__done {
  display: none;
  margin: 0.85rem 0 0;
  color: var(--cyan);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.page-faq .prep:has(#prep-1:checked):has(#prep-2:checked):has(#prep-3:checked):has(#prep-4:checked):has(#prep-5:checked) {
  border-color: var(--cyan);
}

.page-faq .prep:has(#prep-1:checked):has(#prep-2:checked):has(#prep-3:checked):has(#prep-4:checked):has(#prep-5:checked) .prep__done {
  display: block;
}

/* ---------- 准备信息说明 ---------- */
.page-faq .kb-report {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .why {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.page-faq .why > div {
  padding-top: 0.9rem;
  border-top: 3px solid var(--cyan);
}

.page-faq .why h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-faq .why p {
  margin: 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.75;
}

@media (min-width: 760px) {
  .page-faq .why {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

.page-faq .kb-report__send {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  margin-top: 2rem;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: var(--violet);
  border: 3px solid var(--line);
  box-shadow: var(--shadow);
}

.page-faq .kb-report__send p {
  margin: 0;
  color: var(--silver);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .kb-report__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

@media (min-width: 760px) {
  .page-faq .kb-report__send {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.5rem;
  }
  .page-faq .kb-report__actions {
    flex-wrap: nowrap;
  }
}

/* ---------- 术语 ---------- */
.page-faq .kb-terms {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .terms {
  margin: 1.5rem 0 0;
}

.page-faq .terms__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.35rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .terms dt {
  color: var(--cyan);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.page-faq .terms dd {
  margin: 0;
  color: var(--silver);
  font-size: 0.9375rem;
  line-height: 1.75;
}

@media (min-width: 760px) {
  .page-faq .terms__row {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 1.5rem;
    align-items: baseline;
  }
}

.page-faq .kb-terms__tail {
  margin: 1.5rem 0 0;
  color: var(--mist);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---------- 底栏 ---------- */
.page-faq .kb-footline {
  padding-top: 1rem;
  border-top: 1px solid var(--faq-hair);
}
<<<END>>>