.page-faq {
  --faq-hair: 1px solid rgba(207, 195, 168, 0.3);
  --faq-hair-dark: 1px solid rgba(16, 25, 21, 0.14);
  overflow: hidden;
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(48px, 8vw, 100px)) 0 clamp(44px, 6vw, 78px);
  color: var(--chalk);
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(53, 240, 208, 0.16), transparent 58%),
    radial-gradient(90% 70% at 6% 100%, rgba(255, 122, 61, 0.14), transparent 62%),
    linear-gradient(158deg, var(--ink) 0%, var(--deep) 66%, var(--line) 100%);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(247, 245, 239, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 245, 239, 0.055) 1px, transparent 1px);
  background-size: 76px 76px;
  pointer-events: none;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(247, 245, 239, 0.6);
}

.page-faq .breadcrumb a {
  color: rgba(247, 245, 239, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumb__sep {
  color: rgba(53, 240, 208, 0.65);
}

.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 18px 0 0;
  max-width: 19ch;
  font-size: clamp(32px, 6.6vw, 72px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.02em;
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(247, 245, 239, 0.82);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin-top: clamp(30px, 4vw, 46px);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid rgba(53, 240, 208, 0.55);
}

.page-faq .faq-stat__num {
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  font-weight: 500;
  color: var(--cyan);
}

.page-faq .faq-stat__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(247, 245, 239, 0.7);
}

/* ---------- 主题筛选 ---------- */
.page-faq .faq-filter {
  padding: clamp(26px, 3.6vw, 42px) 0;
  color: var(--chalk);
  background: var(--line);
  border-top: 3px solid var(--cyan);
  border-bottom: 1px solid rgba(7, 18, 15, 0.5);
}

.page-faq .faq-filter__title {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.page-faq .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid rgba(53, 240, 208, 0.38);
  border-radius: 999px;
  background: transparent;
  color: var(--chalk);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--cyan);
  background: rgba(53, 240, 208, 0.12);
}

.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 600;
}

.page-faq .filter-chip:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-faq .filter-chip__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  opacity: 0.72;
}

.page-faq .faq-filter__result {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(247, 245, 239, 0.68);
}

/* ---------- 适配清单 ---------- */
.page-faq .faq-fit {
  padding: clamp(48px, 7vw, 92px) 0;
  color: var(--chalk);
  background: linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
}

.page-faq .faq-fit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-fit h2 {
  margin: 16px 0 0;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-faq .faq-fit__lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 245, 239, 0.82);
}

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

.page-faq .faq-fit__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-fit__list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(247, 245, 239, 0.8);
  padding-top: 12px;
  border-top: var(--faq-hair);
}

.page-faq .faq-fit__n {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .faq-fit .btn {
  margin-top: 26px;
}

.page-faq .faq-fit__media {
  margin: 0;
  border: 1px solid rgba(53, 240, 208, 0.3);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--line);
}

.page-faq .faq-fit__media .media__frame {
  overflow: hidden;
}

.page-faq .faq-fit__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-fit__media .media__tag {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(247, 245, 239, 0.75);
  background: rgba(7, 18, 15, 0.72);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(44px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
  color: var(--black);
  background: var(--paper);
}

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

.page-faq .faq-toc {
  padding-left: 18px;
  border-left: 2px solid var(--paper-dim);
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--orange-ink);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__list li {
  counter-increment: toc;
}

.page-faq .faq-toc__list a {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 6px;
  padding: 7px 6px 7px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--deep);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-faq .faq-toc__list a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--teal);
  padding-top: 2px;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--orange-ink);
  transform: translateX(3px);
}

.page-faq .faq-toc__list a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-faq .faq-toc__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(16, 25, 21, 0.66);
}

.page-faq .faq-toc__note a {
  color: var(--orange-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-stream__title {
  margin: 0 0 20px;
  font-size: clamp(21px, 2.8vw, 28px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--black);
}

.page-faq .qa {
  position: relative;
  margin-bottom: 14px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--chalk);
  border: var(--faq-hair-dark);
  border-left: 3px solid var(--paper-dim);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
  transition: transform 0.2s var(--ease), border-left-color 0.2s var(--ease);
}

.page-faq .qa:hover {
  transform: translateX(-4px);
  border-left-color: var(--cyan);
}

.page-faq .qa__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .qa__idx {
  flex: none;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--orange-ink);
}

.page-faq .qa__q {
  margin: 0;
  font-size: clamp(16.5px, 2vw, 19.5px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--black);
}

.page-faq .qa__a {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--deep);
}

.page-faq .qa__more {
  margin-top: 14px;
  padding-top: 11px;
  border-top: 1px dashed rgba(16, 25, 21, 0.2);
}

.page-faq .qa__more summary {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--teal);
  cursor: pointer;
}

.page-faq .qa__more summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-faq .qa__steps {
  margin: 12px 0 0;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--deep);
}

.page-faq .qa__steps li {
  margin-bottom: 6px;
}

.page-faq .qa__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.page-faq .filter-empty {
  margin: 0;
  padding: 28px 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--deep);
  background: rgba(207, 195, 168, 0.3);
  border: 1px dashed rgba(16, 25, 21, 0.3);
  border-radius: var(--radius-md);
}

/* ---------- 四步排查 ---------- */
.page-faq .faq-flow {
  padding: clamp(48px, 7vw, 92px) 0;
  color: var(--chalk);
  background:
    radial-gradient(110% 80% at 12% 0%, rgba(53, 240, 208, 0.13), transparent 60%),
    linear-gradient(180deg, var(--ink) 0%, var(--deep) 60%, var(--line) 100%);
}

.page-faq .faq-flow h2 {
  margin: 16px 0 0;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-faq .faq-flow__lead {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(247, 245, 239, 0.8);
}

.page-faq .faq-flow__figure {
  margin: 26px 0 0;
  border: 1px solid rgba(53, 240, 208, 0.26);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .faq-flow__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-flow__steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .flow-step {
  position: relative;
  padding: 22px 22px 24px;
  background: rgba(12, 42, 33, 0.82);
  border-top: 2px solid var(--cyan);
  border-radius: 2px;
}

.page-faq .flow-step::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 17px 17px 0;
  border-color: transparent var(--orange) transparent transparent;
}

.page-faq .flow-step__n {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .flow-step h3 {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--chalk);
}

.page-faq .flow-step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 245, 239, 0.76);
}

.page-faq .faq-flow__tip {
  margin: 24px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(247, 245, 239, 0.7);
}

.page-faq .faq-flow__tip a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 反馈 ---------- */
.page-faq .faq-support {
  padding: clamp(48px, 7vw, 92px) 0;
  color: var(--ink);
  background: var(--orange);
}

.page-faq .faq-support .eyebrow {
  margin-top: 0;
  color: var(--ink);
}

.page-faq .faq-support .eyebrow::before {
  background: var(--ink);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-support h2 {
  margin: 14px 0 0;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-support__lead {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(7, 18, 15, 0.82);
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-support__list li {
  padding-top: 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(7, 18, 15, 0.86);
  border-top: 1px solid rgba(7, 18, 15, 0.22);
}

.page-faq .faq-support__list strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--ink);
  margin-bottom: 4px;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(7, 18, 15, 0.68);
}

.page-faq .faq-support__note a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-support__template {
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink);
  color: var(--chalk);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--cyan);
}

.page-faq .faq-support__template h3 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-support__template pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  white-space: pre-wrap;
  word-break: break-word;
  color: rgba(247, 245, 239, 0.86);
}

.page-faq .faq-support__template-note {
  margin: 18px 0 0;
  padding-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(247, 245, 239, 0.55);
  border-top: 1px solid rgba(247, 245, 239, 0.16);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 940px) {
  .page-faq .faq-fit__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 246px minmax(0, 1fr);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 34px;
  }

  .page-faq .flow-step:not(:last-child)::before {
    content: "";
    position: absolute;
    top: 44px;
    right: -21px;
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 12px solid var(--cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .filter-chip,
  .page-faq .faq-toc__list a {
    transition: none;
  }

  .page-faq .qa:hover {
    transform: none;
  }
}
<<<END>>>