.page-faq {
  --faq-gap: clamp(18px, 3vw, 34px);
  --faq-cut: 14px;
  --faq-radius: 2px;
  display: block;
  background: var(--ink-900);
  color: var(--mist-100);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq a {
  color: var(--blue-400);
  text-decoration: none;
}

.page-faq a:hover {
  color: var(--gold-300);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 76px) 0 clamp(30px, 4.5vw, 54px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 760px;
  background:
    radial-gradient(560px 320px at 78% 24%, rgba(216, 164, 60, 0.20), transparent 68%),
    radial-gradient(480px 280px at 14% 6%, rgba(63, 210, 255, 0.12), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.6vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.8;
  color: var(--mist-100);
}

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

.page-faq .faq-hero__tip {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--bronze-700);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--slate-400);
}

.page-faq .faq-hero__visual {
  display: flex;
  justify-content: center;
}

.page-faq .faq-hero__art {
  width: min(100%, 380px);
  height: auto;
}

.page-faq .faq-hero__nodes circle {
  fill: var(--ink-900);
  stroke: var(--gold-300);
  stroke-width: 2;
}

.page-faq .faq-hero__nodes circle:nth-child(2) {
  stroke: var(--blue-400);
}

.page-faq .faq-flow {
  stroke-dasharray: 7 11;
  animation: faq-flow 3.6s linear infinite;
}

@keyframes faq-flow {
  to {
    stroke-dashoffset: -72;
  }
}

/* ---------- 分组锚点条 ---------- */

.page-faq .faq-ways {
  position: sticky;
  top: var(--header-h, 54px);
  z-index: 18;
  background: rgba(10, 12, 16, 0.94);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line-700);
  border-bottom: 1px solid var(--line-700);
}

.page-faq .faq-ways__inner {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.page-faq .faq-ways__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate-400);
}

.page-faq .faq-ways__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-ways__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-ways__list a {
  display: block;
  white-space: nowrap;
  padding: 7px 12px;
  border: 1px solid var(--line-700);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--slate-400);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-ways__list a:hover {
  color: var(--gold-300);
  border-color: var(--bronze-700);
}

.page-faq .faq-ways__list a.is-active {
  color: var(--ink-900);
  background: var(--gold-500);
  border-color: var(--gold-500);
}

/* ---------- 章节 ---------- */

.page-faq .faq-group {
  position: relative;
  padding: clamp(44px, 6.5vw, 84px) 0;
}

.page-faq .faq-group--tint {
  background:
    linear-gradient(180deg, rgba(20, 26, 34, 0.72), rgba(10, 12, 16, 0) 76%);
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--line-700);
}

.page-faq .faq-group .sec-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.page-faq .faq-group .sec-head__sub {
  color: var(--slate-400);
}

.page-faq .faq-ref {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--gold-500);
  background: rgba(216, 164, 60, 0.06);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-faq .faq-ref a {
  border-bottom: 1px solid rgba(63, 210, 255, 0.45);
}

/* ---------- 图片 ---------- */

.page-faq .faq-fig {
  margin: clamp(24px, 3.5vw, 38px) 0 0;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-700);
  background: var(--panel-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-fig--narrow {
  max-width: 860px;
}

.page-faq .faq-fig__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--slate-400);
}

/* ---------- 四步排查 ---------- */

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(26px, 3.5vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 20px 20px;
  background: var(--panel-800);
  border: 1px solid var(--line-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--gold-500), rgba(216, 164, 60, 0));
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  border-color: var(--bronze-700);
}

.page-faq .faq-step__num {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--gold-500);
}

.page-faq .faq-step__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.45;
  color: #FFFFFF;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-100);
}

.page-faq .faq-step__verdict {
  margin-top: 12px !important;
  padding-left: 9px;
  border-left: 2px solid rgba(63, 210, 255, 0.5);
  font-family: var(--font-mono);
  font-size: 12.5px !important;
  letter-spacing: 0.01em;
  color: var(--blue-400) !important;
}

.page-faq .faq-step__check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-400);
  cursor: pointer;
  user-select: none;
}

.page-faq .faq-step__check input {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin: 0;
  border: 1px solid var(--bronze-700);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-step__check input:checked {
  border-color: var(--gold-500);
  background: rgba(216, 164, 60, 0.14);
}

.page-faq .faq-step__check input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--gold-300);
  border-bottom: 2px solid var(--gold-300);
  transform: rotate(40deg);
}

.page-faq .faq-step__check input:checked + span {
  color: var(--gold-300);
}

/* ---------- 登录异常：侧栏 + 手风琴 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: clamp(24px, 3.5vw, 38px);
}

.page-faq .faq-split__aside {
  padding: 20px;
  background: rgba(20, 26, 34, 0.72);
  border: 1px solid var(--line-700);
  border-top: 3px solid var(--gold-500);
}

.page-faq .faq-split__note {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--slate-400);
}

.page-faq .faq-split__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-split__tags li {
  padding: 6px 11px;
  border: 1px solid var(--line-700);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gold-300);
  background: rgba(10, 12, 16, 0.6);
}

.page-faq .faq-split__hint {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-faq .faq-acc {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-acc__item {
  position: relative;
  background: var(--panel-800);
  border: 1px solid var(--line-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-faq .faq-acc__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-300), var(--gold-500));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s ease;
  pointer-events: none;
}

.page-faq .faq-acc__item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-acc__item[open] {
  border-color: var(--bronze-700);
}

.page-faq .faq-acc__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 20px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: #FFFFFF;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-acc__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--gold-500);
  transition: transform 0.22s ease;
}

.page-faq .faq-acc__item[open] .faq-acc__summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-acc__body {
  padding: 0 20px 22px;
}

.page-faq .faq-acc__verdict {
  margin: 0 0 14px;
  padding: 10px 13px;
  border-left: 2px solid var(--gold-500);
  background: rgba(216, 164, 60, 0.08);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.01em;
  line-height: 1.7;
  color: var(--gold-300);
}

.page-faq .faq-acc__steps {
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-acc__steps li {
  position: relative;
  padding-left: 38px;
  margin-bottom: 11px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-100);
}

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

.page-faq .faq-acc__steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  padding: 1px 5px;
  border: 1px solid var(--line-700);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold-500);
}

/* ---------- 更新时间 ---------- */

.page-faq .faq-time {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(24px, 3.5vw, 38px);
}

.page-faq .faq-time__cell {
  padding: 20px;
  background: var(--panel-800);
  border: 1px solid var(--line-700);
  border-bottom: 2px solid var(--line-700);
  transition: border-bottom-color 0.22s ease;
}

.page-faq .faq-time__cell:hover {
  border-bottom-color: var(--gold-500);
}

.page-faq .faq-time__label {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--blue-400);
}

.page-faq .faq-time__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-100);
}

/* ---------- 界面与手机端 ---------- */

.page-faq .faq-duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(24px, 3.5vw, 38px);
}

.page-faq .faq-card {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--panel-800);
  border: 1px solid var(--line-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-card--alt {
  background:
    linear-gradient(155deg, rgba(63, 210, 255, 0.10), rgba(20, 26, 34, 0.9) 46%);
  border-color: rgba(63, 210, 255, 0.32);
}

.page-faq .faq-card__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  border: 1px solid var(--bronze-700);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-300);
}

.page-faq .faq-card--alt .faq-card__tag {
  border-color: rgba(63, 210, 255, 0.5);
  color: var(--blue-400);
}

.page-faq .faq-card__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
  color: #FFFFFF;
}

.page-faq .faq-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist-100);
}

.page-faq .faq-card__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-card__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-400);
}

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

.page-faq .faq-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 1px;
  background: var(--gold-500);
}

/* ---------- 联系引导 ---------- */

.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: clamp(24px, 3.5vw, 38px);
}

.page-faq .faq-help__panel {
  background: var(--panel-800);
}

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

.page-faq .faq-help__list li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-700);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist-100);
}

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

.page-faq .faq-help__list .mono {
  flex: none;
  font-size: 12px;
  color: var(--gold-500);
  padding-top: 2px;
}

.page-faq .faq-help__cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 26px 22px;
  border: 1px solid var(--line-700);
  border-left: 3px solid var(--gold-500);
  background:
    radial-gradient(420px 200px at 90% 0%, rgba(216, 164, 60, 0.14), transparent 72%),
    rgba(20, 26, 34, 0.7);
}

.page-faq .faq-help__lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-100);
}

.page-faq .faq-help__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--slate-400);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-time {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-faq .faq-step:nth-child(2n) {
    margin-top: 30px;
  }

  .page-faq .faq-ways__inner {
    flex-direction: row;
    align-items: center;
    gap: 18px;
  }

  .page-faq .faq-ways__list {
    flex-wrap: wrap;
    overflow-x: visible;
    padding-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-faq .faq-hero__visual {
    justify-content: flex-end;
  }

  .page-faq .faq-fig--narrow {
    margin-left: auto;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-split {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-split__aside {
    position: sticky;
    top: calc(var(--header-h, 54px) + 76px);
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

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

  .page-faq .faq-step:nth-child(2n) {
    margin-top: 0;
  }

  .page-faq .faq-step:nth-child(even) {
    margin-top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-flow {
    animation: none;
    stroke-dasharray: none;
  }

  .page-faq .faq-step,
  .page-faq .faq-time__cell,
  .page-faq .faq-acc__summary::after,
  .page-faq .faq-acc__item::before {
    transition: none;
  }

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