.page-faq {
  background: var(--c-white);
  color: var(--c-ink);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-slate);
}
.page-faq .breadcrumb a {
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.page-faq .breadcrumb a:hover {
  color: var(--c-red);
  border-bottom-color: var(--c-orange);
}
.page-faq .breadcrumb a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 72px) 0 clamp(44px, 6vw, 92px);
  border-bottom: var(--hair);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(221, 225, 230, .62) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(221, 225, 230, .62) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(115% 95% at 88% 4%, #000 0%, rgba(0, 0, 0, .18) 50%, transparent 74%);
  mask-image: radial-gradient(115% 95% at 88% 4%, #000 0%, rgba(0, 0, 0, .18) 50%, transparent 74%);
  opacity: .85;
}
.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 11em;
  color: var(--c-navy);
}
.page-faq .faq-hero .lede {
  margin-top: 22px;
  max-width: 34em;
  color: var(--c-ink);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 右侧注释栏 ---------- */
.page-faq .faq-side-note {
  margin-top: clamp(30px, 5vw, 10px);
  padding-top: 20px;
  border-top: 2px solid var(--c-red);
}
.page-faq .faq-side-note--plain {
  border-top-color: var(--c-blue);
}
.page-faq .faq-side-note .mono {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-red);
}
.page-faq .faq-side-note--plain .mono {
  color: var(--c-blue);
}
.page-faq .faq-side-note > p:not(.mono) {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-slate);
}
.page-faq .faq-side-note__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-side-note__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-slate);
}
.page-faq .faq-side-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 1px;
  background: var(--c-orange);
}

/* ---------- 步骤块 ---------- */
.page-faq .faq-step-list {
  margin-top: clamp(30px, 5vw, 56px);
  border-top: 2px solid var(--c-blue);
}
.page-faq .faq-step {
  border-bottom: var(--hair);
  transition: background-color var(--step) var(--ease);
}
.page-faq .faq-step:nth-of-type(even) {
  background-color: var(--c-mist);
}
.page-faq .faq-step__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "num title marker"
    "num hint marker";
  align-items: baseline;
  gap: 8px 22px;
  padding: clamp(20px, 3vw, 32px) clamp(14px, 3vw, 30px);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-step__summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-step__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 500;
  line-height: .85;
  letter-spacing: -.03em;
  color: var(--c-red);
}
.page-faq .faq-step__title {
  grid-area: title;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--c-navy);
  transition: color var(--step) var(--ease);
}
.page-faq .faq-step__hint {
  grid-area: hint;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--c-slate);
}
.page-faq .faq-step__summary::after {
  content: "+";
  grid-area: marker;
  align-self: start;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--c-blue-mid);
  transition: color var(--step) var(--ease);
}
.page-faq .faq-step[open] .faq-step__summary::after {
  content: "\2013";
  color: var(--c-red);
}
.page-faq .faq-step__body {
  padding: 0 clamp(14px, 3vw, 30px) clamp(24px, 3vw, 34px);
}
.page-faq .faq-step__body p {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-ink);
}

/* ---------- 图像 ---------- */
.page-faq .faq-figure {
  margin-top: clamp(28px, 4vw, 48px);
}
.page-faq .figure {
  margin: 0;
}
.page-faq .figure__frame {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--c-mist);
}
.page-faq .figure__frame--square {
  aspect-ratio: 1 / 1;
}
.page-faq .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-slate);
}
.page-faq .faq-flow {
  margin-top: clamp(30px, 4vw, 56px);
}

/* ---------- 路径层级 ---------- */
.page-faq .faq-layers {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: var(--hair);
}
.page-faq .faq-layers__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 0;
  border-bottom: var(--hair);
}
.page-faq .faq-layers__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-red);
}
.page-faq .faq-layers__val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}
.page-faq .faq-path-demo {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 26px 0 0;
  padding: 12px 18px;
  border-left: 3px solid var(--c-red);
  background: var(--c-white);
  color: var(--c-blue);
  font-size: 13px;
  letter-spacing: .04em;
}
.page-faq .faq-path-demo__sep {
  color: var(--c-orange);
}

/* ---------- 设备对比 ---------- */
.page-faq .faq-device {
  margin-top: clamp(30px, 4vw, 50px);
  padding-top: 22px;
  border-top: 3px solid var(--c-blue);
}
.page-faq .faq-device--pad {
  border-top-color: var(--c-red);
}
.page-faq .faq-device__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-slate);
}
.page-faq .faq-device__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-navy);
}
.page-faq .faq-device__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-device__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-ink);
}
.page-faq .faq-device__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 10px;
  height: 1px;
  background: var(--c-blue-mid);
}
.page-faq .faq-device--pad .faq-device__list li::before {
  background: var(--c-red);
}

/* ---------- 下载与权限 ---------- */
.page-faq .faq-gate {
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 24px;
  border-top: 2px solid var(--c-grid);
}
.page-faq .faq-gate h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--c-navy);
}
.page-faq .faq-gate__dot {
  flex: none;
  width: 10px;
  height: 10px;
}
.page-faq .faq-gate__dot--open {
  background: var(--c-aurora);
}
.page-faq .faq-gate__dot--lock {
  background: var(--c-red);
}
.page-faq .faq-gate p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}
.page-faq .faq-gate ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-slate);
}
.page-faq .faq-gate a {
  color: var(--c-blue-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--c-grid);
  transition: color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.page-faq .faq-gate a:hover {
  color: var(--c-red);
  border-bottom-color: var(--c-orange);
}
.page-faq .faq-gate a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.page-faq .faq-gate .copy-btn {
  margin-top: 4px;
}

/* ---------- 服务归属 ---------- */
.page-faq .faq-region {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(30px, 4vw, 52px);
}
.page-faq .faq-region__stage {
  padding: 24px 0;
  border-top: 2px solid var(--c-blue);
}
.page-faq .faq-region__idx {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-red);
}
.page-faq .faq-region__stage h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--c-navy);
}
.page-faq .faq-region__stage p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-ink);
}
.page-faq .faq-region__more {
  margin-top: clamp(24px, 3vw, 36px);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: var(--hair);
}
.page-faq .faq-qa__item {
  border-bottom: var(--hair);
}
.page-faq .faq-qa__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 32px 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-blue);
  transition: color var(--step) var(--ease);
}
.page-faq .faq-qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-qa__q::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: .55em;
  background: var(--c-red);
}
.page-faq .faq-qa__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-blue-mid);
}
.page-faq .faq-qa__item[open] .faq-qa__q {
  color: var(--c-red);
}
.page-faq .faq-qa__item[open] .faq-qa__q::after {
  content: "\2013";
}
.page-faq .faq-qa__a {
  padding: 0 0 20px 22px;
}
.page-faq .faq-qa__a p {
  margin: 0 0 10px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-ink);
}
.page-faq .faq-qa__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-qa__a a {
  color: var(--c-blue-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--c-grid);
  transition: color var(--step) var(--ease), border-color var(--step) var(--ease);
}
.page-faq .faq-qa__a a:hover {
  color: var(--c-red);
  border-bottom-color: var(--c-orange);
}
.page-faq .faq-qa__a a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-stop-list {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-stop-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}
.page-faq .faq-stop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 12px;
  height: 2px;
  background: var(--c-red);
}
.page-faq .faq-stop-list strong {
  color: var(--c-navy);
  font-weight: 700;
}
.page-faq .faq-cta {
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: 22px;
  border-top: 3px solid var(--c-red);
}
.page-faq .faq-cta__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-red);
}
.page-faq .faq-cta__text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-ink);
}

/* ---------- 交互反馈 ---------- */
@media (hover: hover) {
  .page-faq .faq-step__summary:hover .faq-step__title,
  .page-faq .faq-qa__q:hover {
    color: var(--c-red);
  }
}
.page-faq .faq-step__summary:focus-visible,
.page-faq .faq-qa__q:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.page-faq .btn:focus-visible,
.page-faq .copy-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ---------- 响应式 ---------- */
@media (max-width: 719px) {
  .page-faq .faq-hero h1 {
    max-width: none;
  }
  .page-faq .faq-step__summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas:
      "num title marker"
      "hint hint hint";
    gap: 10px 16px;
  }
  .page-faq .faq-step__num {
    font-size: 34px;
  }
  .page-faq .faq-path-demo {
    font-size: 12px;
    padding: 10px 14px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-layers__item {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-region {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-region__stage {
    padding: 26px 28px 30px 0;
  }
  .page-faq .faq-region__stage + .faq-region__stage {
    padding-left: 28px;
    border-left: var(--hair);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-side-note {
    margin-top: 0;
  }
  .page-faq .faq-device {
    margin-top: clamp(40px, 4vw, 62px);
  }
}