.page-faq {
  --faq-line: rgba(143, 163, 191, 0.22);
  --faq-line-strong: rgba(143, 163, 191, 0.46);
  background: var(--ink);
  color: var(--paper);
  font-size: 16px;
  line-height: 1.7;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  margin: 0;
  line-height: 1.28;
}

.page-faq p {
  margin: 0;
}

.page-faq ul,
.page-faq ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq a {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

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

/* 面包屑 */
.page-faq .faq-crumb {
  padding-top: 24px;
}

.page-faq .faq-crumb .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-faq .faq-crumb .breadcrumb a {
  color: var(--mist);
}

.page-faq .faq-crumb .breadcrumb a:hover {
  color: var(--amber);
}

.page-faq .breadcrumb__sep {
  color: var(--steel);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 52px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -90px;
  left: -18%;
  width: 92%;
  height: 400px;
  background: linear-gradient(148deg, rgba(255, 138, 61, 0.17), rgba(255, 138, 61, 0) 64%);
  transform: skewY(-7deg);
  pointer-events: none;
}

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

.page-faq .faq-hero .eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber-soft);
}

.page-faq .faq-hero__title {
  margin-top: 14px;
  max-width: 17ch;
  font-size: clamp(30px, 7.4vw, 62px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin-top: 18px;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 241, 232, 0.84);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 24px;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__stats .mono {
  font-size: 16px;
  color: var(--amber);
}

.page-faq .faq-hero__diagram {
  margin-top: 30px;
  border: 1px solid var(--faq-line);
  background: var(--abyss);
  overflow: hidden;
}

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

/* 双主卡 */
.page-faq .faq-triage {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-faq .triage {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 22px;
  background: var(--steel);
  border: 1px solid var(--faq-line-strong);
  border-top-width: 3px;
}

.page-faq .triage--open {
  border-top-color: var(--amber);
}

.page-faq .triage--login {
  border-top-color: var(--jade);
}

.page-faq .triage__code {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .triage--open .triage__code {
  color: var(--amber-soft);
}

.page-faq .triage--login .triage__code {
  color: var(--jade-soft);
}

.page-faq .triage__title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .triage__desc {
  font-size: 15px;
  line-height: 1.72;
  color: rgba(245, 241, 232, 0.8);
}

.page-faq .triage__symptoms {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .triage__symptoms li {
  padding: 4px 8px;
  border: 1px solid var(--faq-line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .triage__cta {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  border-bottom: 0;
}

/* 筛选区 */
.page-faq .faq-filter {
  padding: 6px 0 56px;
}

.page-faq .section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .section-head__title {
  font-size: clamp(20px, 4.4vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .section-head__meta {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-filter__intro {
  margin-top: 16px;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 241, 232, 0.8);
}

.page-faq .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .chip {
  padding: 7px 12px;
  border: 1px solid var(--faq-line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.2;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .chip:hover {
  color: var(--paper);
  border-color: var(--amber-soft);
}

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

.page-faq .chip[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--abyss);
  font-weight: 700;
}

/* 现象条目 */
.page-faq .issue-list {
  margin-top: 4px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .issue {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .issue[hidden] {
  display: none;
}

.page-faq .issue summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 15px 30px 15px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .issue summary::after {
  content: "+";
  position: absolute;
  top: 12px;
  right: 2px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--amber);
}

.page-faq .issue[open] summary::after {
  content: "—";
  font-size: 13px;
  top: 16px;
}

.page-faq .issue__code {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .issue__title {
  flex: 1 1 12em;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--paper);
  transition: color 0.16s var(--ease);
}

.page-faq .issue summary:hover .issue__title {
  color: var(--amber-soft);
}

.page-faq .issue__body {
  padding: 0 0 20px 14px;
  border-left: 2px solid var(--steel);
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(245, 241, 232, 0.84);
}

.page-faq .issue__steps {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  counter-reset: issue-step;
}

.page-faq .issue__steps li {
  position: relative;
  padding-left: 26px;
  counter-increment: issue-step;
}

.page-faq .issue__steps li::before {
  content: counter(issue-step, decimal-leading-zero);
  position: absolute;
  top: 2px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--jade-soft);
}

.page-faq .issue__link {
  margin-top: 10px;
  font-size: 13px;
  color: var(--mist);
}

/* 横向主题带 */
.page-faq .faq-band {
  padding: 52px 0;
  border-top: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-band--deep {
  background: var(--abyss);
}

/* 步进条 */
.page-faq .stepline {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .stepline__node {
  position: relative;
  padding: 16px 16px 18px;
  background: var(--steel);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--amber);
}

.page-faq .stepline__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .stepline__title {
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 700;
}

.page-faq .stepline__text {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(245, 241, 232, 0.78);
}

.page-faq .band-note {
  margin-top: 22px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* 登录异常分组 */
.page-faq .login-groups {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .login-group {
  padding: 18px 18px 20px;
  background: var(--steel);
  border: 1px solid var(--faq-line);
}

.page-faq .login-group__title {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15px;
  font-weight: 700;
  color: var(--jade-soft);
}

.page-faq .login-group__list {
  display: grid;
  gap: 9px;
}

.page-faq .login-group__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .login-group__list li::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--jade);
}

.page-faq .login-group__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .login-path {
  margin-top: 24px;
  max-width: 560px;
  border: 1px solid var(--faq-line);
  background: var(--abyss);
  overflow: hidden;
}

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

/* 浅色检索区 */
.page-faq .faq-paper {
  padding: 50px 0;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-paper .eyebrow {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #8A6A44;
}

.page-faq .faq-paper__title {
  margin-top: 12px;
  font-size: clamp(22px, 4.8vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .faq-paper__lead p {
  margin-top: 12px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.75;
  color: #4A4438;
}

.page-faq .search-help {
  display: grid;
  gap: 0;
  margin: 26px 0 30px;
  border-top: 1px solid rgba(27, 42, 74, 0.18);
}

.page-faq .search-help > li {
  padding: 16px 0;
  border-bottom: 1px solid rgba(27, 42, 74, 0.18);
}

.page-faq .search-help h3 {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
}

.page-faq .search-help p {
  font-size: 14px;
  line-height: 1.72;
  color: #4A4438;
}

.page-faq .faq-paper .btn--primary {
  color: var(--abyss);
  border-bottom: 0;
}

/* 反馈提交 */
.page-faq .faq-band--submit {
  padding-bottom: 64px;
}

.page-faq .submit {
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.page-faq .submit__panel {
  border: 1px solid var(--faq-line-strong);
  background: var(--abyss);
  padding-bottom: 18px;
}

.page-faq .submit__bar {
  display: block;
  padding: 7px 16px;
  background: var(--jade-soft);
  color: var(--abyss);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-faq .submit__gauge {
  display: flex;
  gap: 4px;
  padding: 14px 16px 0;
}

.page-faq .submit__gauge span {
  flex: 1;
  height: 4px;
  background: var(--jade);
}

.page-faq .submit__list {
  display: grid;
  gap: 12px;
  padding: 16px;
}

.page-faq .submit__list li {
  display: grid;
  grid-template-columns: 2.2em 1fr;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 14px;
  line-height: 1.66;
  color: rgba(245, 241, 232, 0.86);
}

.page-faq .submit__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .submit__list .mono {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .submit__channels h3 {
  margin-bottom: 14px;
  font-size: 17px;
  font-weight: 700;
}

.page-faq .submit__channels p {
  margin-bottom: 12px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(245, 241, 232, 0.82);
}

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

/* 平板与桌面 */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding-top: 36px;
  }

  .page-faq .issue summary {
    align-items: center;
  }

  .page-faq .submit__list li {
    font-size: 14.5px;
  }
}

@media (min-width: 760px) {
  .page-faq .login-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .search-help {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    border-top: 0;
  }

  .page-faq .search-help > li {
    padding: 16px 0 0;
    border-bottom: 0;
    border-top: 2px solid var(--ink);
  }
}

@media (min-width: 820px) {
  .page-faq .stepline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    padding-right: 14px;
  }

  .page-faq .stepline__node {
    border-left: 1px solid var(--faq-line);
    border-top: 3px solid var(--amber);
  }

  .page-faq .stepline__node::after {
    content: "";
    position: absolute;
    top: 25px;
    right: -14px;
    width: 14px;
    height: 1px;
    background: var(--faq-line-strong);
  }

  .page-faq .stepline__node:last-child::after {
    display: none;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .faq-hero__title {
    max-width: 18ch;
  }

  .page-faq .faq-hero__diagram {
    margin-top: 36px;
  }

  .page-faq .faq-triage {
    grid-template-columns: minmax(0, 1.24fr) minmax(0, 0.76fr);
    gap: 24px;
    align-items: start;
    margin-top: 36px;
    padding-bottom: 40px;
  }

  .page-faq .triage {
    padding: 30px 26px 26px;
  }

  .page-faq .triage--login {
    margin-top: 48px;
  }

  .page-faq .faq-filter {
    padding-bottom: 72px;
  }

  .page-faq .faq-filter__intro {
    max-width: 56ch;
  }

  .page-faq .issue summary {
    padding: 17px 34px 17px 0;
  }

  .page-faq .issue__title {
    font-size: 16.5px;
  }

  .page-faq .faq-band {
    padding: 68px 0;
  }

  .page-faq .submit {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 36px;
  }

  .page-faq .login-path {
    max-width: 620px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .chip,
  .page-faq .triage__cta,
  .page-faq .issue__title,
  .page-faq a {
    transition: none;
  }
}
<<<END>>>