.page-faq {
  --faq-warm: rgba(255, 200, 87, 0.9);
  --faq-glow: rgba(59, 240, 200, 0.28);
  background-color: var(--ink-950);
  color: var(--cream);
  padding-bottom: 56px;
}

.page-faq section[id] {
  scroll-margin-top: 92px;
}

.page-faq .page-faq__crumb {
  padding-top: 20px;
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 44px;
  border-bottom: 1px solid var(--hairline-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(155, 179, 199, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(155, 179, 199, 0.1) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 82%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero__copy {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cream-dim);
}

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

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 4px;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--hairline-soft);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-hero__jump a .mono {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--mint);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  color: var(--cream);
  border-color: var(--line-700);
}

.page-faq .faq-hero__visual {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(15, 53, 84, 0.92), rgba(6, 21, 35, 0.72));
  box-shadow: 0 28px 64px -36px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-hero__visual::before {
  content: "";
  position: absolute;
  top: 0;
  left: 18px;
  right: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  opacity: 0.7;
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  object-fit: cover;
}

.page-faq .faq-hero__visual figcaption {
  margin-top: 10px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-align: right;
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-sec {
  padding: 48px 0;
}

.page-faq .faq-sec__head {
  max-width: 62ch;
  margin-bottom: 28px;
}

.page-faq .faq-sec__head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.45rem, 4.4vw, 2.3rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
}

.page-faq .faq-sec__head p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cream-dim);
}

/* ---------- 三步定位 ---------- */

.page-faq .locate-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .locate-flow__step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 22px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(15, 53, 84, 0.62), rgba(6, 21, 35, 0.55));
}

.page-faq .locate-flow__step h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  padding-right: 40px;
}

.page-faq .locate-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--cream-dim);
}

.page-faq .locate-flow__num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-faq .locate-flow__lamp {
  position: absolute;
  top: 24px;
  right: 22px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.page-faq .locate-flow__lamp--coral {
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, 0.14), 0 0 14px 2px rgba(255, 107, 74, 0.45);
}

.page-faq .locate-flow__lamp--amber {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 200, 87, 0.14), 0 0 14px 2px rgba(255, 200, 87, 0.4);
}

.page-faq .locate-flow__lamp--mint {
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(59, 240, 200, 0.14), 0 0 14px 2px rgba(59, 240, 200, 0.42);
}

.page-faq .locate-flow__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 13px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px dashed rgba(59, 240, 200, 0.45);
  padding-bottom: 2px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .locate-flow__link:hover,
.page-faq .locate-flow__link:focus-visible {
  color: var(--coral-soft);
  border-color: rgba(255, 164, 142, 0.6);
}

/* ---------- 兼容场景矩阵 ---------- */

.page-faq .scene-matrix {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(102px, 1fr));
  gap: 6px;
}

.page-faq .scene-matrix li {
  padding: 9px 10px;
  border: 1px solid var(--hairline-soft);
  border-radius: 2px;
  background: rgba(10, 34, 56, 0.42);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--mist);
  text-align: center;
}

.page-faq .scene-matrix li:nth-child(3n) {
  border-color: rgba(59, 240, 200, 0.24);
  color: rgba(59, 240, 200, 0.82);
}

.page-faq .scene-matrix__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 标签切换 ---------- */

.page-faq .faq-tabs {
  position: relative;
  margin-top: 30px;
}

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

.page-faq .faq-tabs__bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-tabs__tab {
  flex: 0 0 auto;
  padding: 10px 18px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: rgba(10, 34, 56, 0.6);
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--mist);
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq #compat-screen:checked ~ .faq-tabs__bar .faq-tabs__tab[for="compat-screen"],
.page-faq #compat-cast:checked ~ .faq-tabs__bar .faq-tabs__tab[for="compat-cast"],
.page-faq #compat-mobile:checked ~ .faq-tabs__bar .faq-tabs__tab[for="compat-mobile"] {
  color: var(--ink-950);
  background: var(--mint);
  border-color: var(--mint);
  font-weight: 700;
}

.page-faq #compat-screen:focus-visible ~ .faq-tabs__bar .faq-tabs__tab[for="compat-screen"],
.page-faq #compat-cast:focus-visible ~ .faq-tabs__bar .faq-tabs__tab[for="compat-cast"],
.page-faq #compat-mobile:focus-visible ~ .faq-tabs__bar .faq-tabs__tab[for="compat-mobile"] {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-faq .faq-tabs__panels > .faq-panel {
  display: none;
  padding-top: 20px;
}

.page-faq #compat-screen:checked ~ .faq-tabs__panels > .faq-panel:nth-child(1),
.page-faq #compat-cast:checked ~ .faq-tabs__panels > .faq-panel:nth-child(2),
.page-faq #compat-mobile:checked ~ .faq-tabs__panels > .faq-panel:nth-child(3) {
  display: block;
  animation: faq-panel-in 0.2s var(--ease);
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 折叠面板 ---------- */

.page-faq .folding {
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--line-700);
  border-radius: var(--radius);
  background: rgba(10, 34, 56, 0.52);
  margin-bottom: 10px;
  transition: border-color 0.18s var(--ease);
}

.page-faq .folding[open] {
  border-left-color: var(--mint);
}

.page-faq .folding summary {
  position: relative;
  padding: 15px 44px 15px 16px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--cream);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .folding summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--mint);
}

.page-faq .folding[open] summary::after {
  content: "−";
}

.page-faq .folding summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: -2px;
}

.page-faq .folding__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--hairline-soft);
  padding-top: 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--cream-dim);
}

.page-faq .folding__if {
  margin: 0 0 12px;
}

.page-faq .folding__if .mono {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid rgba(255, 200, 87, 0.4);
  border-radius: 2px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .folding__steps {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.page-faq .folding__steps li {
  line-height: 1.75;
}

.page-faq .folding__steps li::marker {
  color: var(--line-700);
  font-family: var(--font-mono);
}

/* ---------- 账号状态 ---------- */

.page-faq .faq-platform__inner {
  display: grid;
  gap: 28px;
}

.page-faq .state-grid {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .state-grid li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--hairline-soft);
  border-radius: 2px;
  background: rgba(15, 53, 84, 0.34);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--cream-dim);
}

.page-faq .state-grid .mono {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--coral-soft);
  padding-top: 1px;
}

.page-faq .faq-platform__figure {
  margin: 0;
  order: -1;
  padding: 10px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(200deg, rgba(21, 91, 122, 0.5), rgba(6, 21, 35, 0.78));
}

.page-faq .faq-platform__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  object-fit: cover;
}

.page-faq .faq-platform__figure figcaption {
  margin-top: 10px;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-align: right;
}

/* ---------- 资料下载 ---------- */

.page-faq .download-split {
  display: grid;
  gap: 28px;
}

.page-faq .download-steps {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .download-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--hairline-soft);
}

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

.page-faq .download-steps .mono {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mint);
  padding-top: 3px;
}

.page-faq .download-steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 800;
}

.page-faq .download-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--cream-dim);
}

.page-faq .download-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .download-note a {
  color: var(--coral-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 164, 142, 0.5);
}

.page-faq .download-note a:hover,
.page-faq .download-note a:focus-visible {
  color: var(--mint);
  border-color: rgba(59, 240, 200, 0.6);
}

.page-faq .field-panel {
  background: linear-gradient(175deg, rgba(15, 53, 84, 0.72), rgba(6, 21, 35, 0.7));
}

.page-faq .field-panel__list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .field-panel__row {
  display: grid;
  gap: 2px;
  padding: 11px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-faq .field-panel__row:last-child {
  border-bottom: 0;
}

.page-faq .field-panel__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.page-faq .field-panel__row dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--cream-dim);
}

.page-faq .field-panel__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--hairline-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 反馈准备 ---------- */

.page-faq .prep-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .prep-list__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  background: rgba(10, 34, 56, 0.42);
  transition: border-color 0.16s var(--ease);
}

.page-faq .prep-list__item:has(input:checked) {
  border-color: rgba(59, 240, 200, 0.42);
}

.page-faq .prep-list input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  border: 1px solid var(--line-700);
  border-radius: 3px;
  background: rgba(6, 21, 35, 0.75);
  cursor: pointer;
  position: relative;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .prep-list input[type="checkbox"]:checked {
  background: var(--mint);
  border-color: var(--mint);
}

.page-faq .prep-list input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--ink-950);
  border-width: 0 2px 2px 0;
  transform: rotate(40deg);
}

.page-faq .prep-list input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-faq .prep-list label {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--cream-dim);
  cursor: pointer;
}

.page-faq .prepare-cta {
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255, 107, 74, 0.1), rgba(15, 53, 84, 0.6) 55%, rgba(6, 21, 35, 0.72));
}

.page-faq .prepare-cta p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--cream-dim);
}

.page-faq .prepare-cta .mono {
  color: var(--cream);
  font-size: 13px;
  word-break: break-all;
}

.page-faq .prepare-cta a:not(.btn) {
  color: var(--coral-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 164, 142, 0.5);
}

.page-faq .prepare-cta a:not(.btn):hover,
.page-faq .prepare-cta a:not(.btn):focus-visible {
  color: var(--mint);
  border-color: rgba(59, 240, 200, 0.6);
}

.page-faq .prepare-cta .btn {
  justify-self: start;
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 36px 0 56px;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-sec {
    padding: 64px 0;
  }

  .page-faq .locate-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .locate-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 34px;
    right: -20px;
    width: 20px;
    height: 1px;
    background: linear-gradient(90deg, var(--line-700), transparent);
  }

  .page-faq .scene-matrix {
    grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
  }

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

  .page-faq .prepare-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 26px 28px;
  }

  .page-faq .prepare-cta .btn {
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
    align-items: center;
  }

  .page-faq .faq-platform__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-platform__figure {
    order: 0;
    position: sticky;
    top: 96px;
  }

  .page-faq .download-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .download-split__aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tabs__panels > .faq-panel {
    animation: none;
  }

  .page-faq .faq-hero__jump a,
  .page-faq .faq-tabs__tab,
  .page-faq .folding,
  .page-faq .prep-list__item,
  .page-faq .prep-list input[type="checkbox"] {
    transition: none;
  }
}