.page-faq {
  --kb-rule: rgba(53, 240, 196, 0.2);
  --kb-rule-soft: rgba(237, 245, 236, 0.11);
  --kb-space: clamp(2.5rem, 6.4vw, 4.8rem);
  background: linear-gradient(180deg, var(--pitch-deep) 0%, var(--night) 32%, var(--night) 68%, var(--pitch-deep) 100%);
  color: var(--cream);
}

.page-faq .section {
  padding-block: var(--kb-space);
}

/* ---------- 首屏 ---------- */

.page-faq .kb-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.6rem) clamp(2.2rem, 6vw, 4rem);
}

.page-faq .kb-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -12%;
  width: min(660px, 92%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(53, 240, 196, 0.15), transparent 68%);
  pointer-events: none;
}

.page-faq .kb-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -30%;
  width: min(520px, 80%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 182, 46, 0.09), transparent 70%);
  pointer-events: none;
}

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

.page-faq .kb-hero-grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.1rem, 3vw, 1.9rem);
}

.page-faq .kb-hero-copy h1 {
  margin: 0.55rem 0 0;
  font-size: clamp(2.3rem, 8.4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
  font-weight: 800;
}

.page-faq .kb-hero-copy h1::after {
  content: "";
  display: block;
  width: clamp(3rem, 12vw, 6rem);
  height: 4px;
  margin-top: 1.1rem;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-faq .kb-hero-copy .lede {
  margin-top: clamp(1.1rem, 3vw, 1.5rem);
}

.page-faq .kb-jump {
  list-style: none;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--kb-rule);
}

.page-faq .kb-jump li {
  border-bottom: 1px solid var(--kb-rule-soft);
}

.page-faq .kb-jump a {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 0.15rem;
  color: var(--cream);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-faq .kb-jump a:hover,
.page-faq .kb-jump a:focus-visible {
  color: var(--cyan);
  padding-left: 0.7rem;
}

.page-faq .kb-jump .mono {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .kb-hero-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--kb-rule);
  background: var(--pitch);
}

.page-faq .kb-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(4, 20, 13, 0.78) 100%);
  pointer-events: none;
}

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

.page-faq .kb-hero-media .media-caption {
  position: absolute;
  left: 0.95rem;
  right: 0.95rem;
  bottom: 0.8rem;
  z-index: 1;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--cream-dim);
}

/* ---------- 非对称分栏 ---------- */

.page-faq .kb-split {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .kb-split-lead h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.6rem, 4.6vw, 2.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-faq .kb-split-lead .lede {
  margin-top: 1rem;
}

.page-faq .kb-split-lead .btn {
  margin-top: clamp(1.3rem, 3.4vw, 1.9rem);
}

/* ---------- 编号条目 ---------- */

.page-faq .kb-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: kblist;
  border-top: 1px solid var(--kb-rule);
}

.page-faq .kb-list > li {
  position: relative;
  counter-increment: kblist;
  padding: clamp(1.1rem, 3vw, 1.6rem) 0 clamp(1.1rem, 3vw, 1.6rem) 3.2rem;
  border-bottom: 1px solid var(--kb-rule-soft);
}

.page-faq .kb-list > li::before {
  content: counter(kblist, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: clamp(1.25rem, 3.3vw, 1.75rem);
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .kb-list h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-faq .kb-list p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--cream-dim);
}

/* ---------- 三步排查 ---------- */

.page-faq .kb-login-body {
  display: grid;
  gap: clamp(1.8rem, 4.4vw, 2.8rem);
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .kb-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: kbstep;
  border-top: 1px solid var(--kb-rule);
}

.page-faq .kb-step {
  position: relative;
  counter-increment: kbstep;
  padding: clamp(1.3rem, 3.4vw, 1.9rem) 0 clamp(1.3rem, 3.4vw, 1.9rem) 3.6rem;
  border-bottom: 1px solid var(--kb-rule-soft);
  transition: border-color 0.25s var(--ease);
}

.page-faq .kb-step:hover {
  border-bottom-color: var(--kb-rule);
}

.page-faq .kb-step::before {
  content: "0" counter(kbstep);
  position: absolute;
  left: 0;
  top: clamp(1.45rem, 3.7vw, 2.05rem);
  padding-left: 0.6rem;
  border-left: 2px solid var(--cyan);
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--amber);
}

.page-faq .kb-step h3 {
  margin: 0 0 0.42rem;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--cream);
}

.page-faq .kb-step p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--cream-dim);
}

.page-faq .kb-login-media {
  margin: 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--kb-rule);
  border-left: 3px solid var(--cyan);
  background: var(--night-2);
}

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

.page-faq .kb-login-media .media-caption {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 0.35rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--pitch-deep);
  background: var(--amber-soft);
}

/* ---------- 数据表 ---------- */

.page-faq .kb-table {
  margin-top: clamp(1.4rem, 3.6vw, 2.2rem);
  border-top: 1px solid var(--kb-rule);
  border-bottom: 1px solid var(--kb-rule);
}

.page-faq .kb-table caption {
  padding: 0.85rem 0 0.6rem;
  text-align: left;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .data-table thead th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-transform: none;
}

.page-faq .data-table tbody th {
  font-weight: 700;
  color: var(--cream);
}

.page-faq .kb-note {
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--amber);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--cream-dim);
}

/* ---------- 问答 ---------- */

.page-faq .kb-qa {
  margin-top: clamp(1.4rem, 3.6vw, 2.2rem);
  border-top: 1px solid var(--kb-rule);
}

.page-faq .kb-qa details {
  border-bottom: 1px solid var(--kb-rule-soft);
}

.page-faq .kb-qa summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: clamp(1rem, 2.7vw, 1.35rem) 2.6rem clamp(1rem, 2.7vw, 1.35rem) 0;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--cream);
  transition: color 0.25s var(--ease);
}

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

.page-faq .kb-qa summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 1.15rem;
  color: var(--cyan);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
}

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

.page-faq .kb-qa summary:hover,
.page-faq .kb-qa summary:focus-visible {
  color: var(--cyan);
}

.page-faq .kb-qa-body {
  padding: 0 2.6rem 1.3rem 0;
}

.page-faq .kb-qa-body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--cream-dim);
}

/* ---------- 结尾 ---------- */

.page-faq .kb-end {
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

.page-faq .kb-cta {
  position: relative;
  padding: clamp(1.8rem, 5vw, 3rem);
  border: 1px solid var(--kb-rule);
  background:
    linear-gradient(120deg, rgba(53, 240, 196, 0.09), transparent 55%),
    linear-gradient(200deg, rgba(255, 182, 46, 0.1), transparent 62%),
    var(--pitch);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.2rem), calc(100% - 2.2rem) 100%, 0 100%);
}

.page-faq .kb-cta h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3.8vw, 2.1rem);
  line-height: 1.15;
  color: var(--cream);
}

.page-faq .kb-cta p {
  margin: 0.9rem 0 0;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--cream-dim);
}

.page-faq .kb-cta .btn {
  margin-top: clamp(1.3rem, 3.4vw, 1.8rem);
}

/* ---------- 桌面端 ---------- */

@media (min-width: 860px) {
  .page-faq .kb-hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    column-gap: clamp(2rem, 5.5vw, 4.6rem);
    align-items: end;
  }

  .page-faq .kb-split {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    column-gap: clamp(2rem, 6vw, 5rem);
    align-items: start;
  }

  .page-faq .kb-split--reverse {
    grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
  }

  .page-faq .kb-split--reverse .kb-split-lead {
    order: 2;
  }

  .page-faq .kb-login-body {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    column-gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq .kb-hero-copy .lede {
    max-width: 46ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-jump a,
  .page-faq .kb-step,
  .page-faq .kb-qa summary,
  .page-faq .kb-qa summary::after {
    transition: none;
  }
}
<<<END>>>