.page-faq {
  --faq-gutter: clamp(1rem, 4vw, 2.5rem);
  --faq-step-gap: clamp(1rem, 2.5vw, 1.75rem);
  display: block;
}

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

.page-faq .faq-section {
  padding-block: clamp(2.5rem, 7vw, 5rem) 0;
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 1.25rem;
  padding: var(--faq-gutter);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(15, 77, 52, 0.85) 0%, rgba(11, 36, 26, 0.5) 42%, transparent 72%),
    linear-gradient(168deg, var(--deep) 0%, var(--night) 78%);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(168, 255, 96, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(168, 255, 96, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

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

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 11vw, 3.6rem);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--mist);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 1rem 0 0;
  max-width: 40ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-hero__index {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__index-item a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.7rem 0.15rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-faq .faq-hero__index-item .mono {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-hero__index-item a:hover,
.page-faq .faq-hero__index-item a:focus-visible {
  color: var(--mist);
  border-color: var(--lime);
  padding-left: 0.45rem;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin: 1.5rem 0 0;
}

.page-faq .faq-hero__stat dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-hero__stat dd {
  margin: 0.15rem 0 0;
  font-size: 1.15rem;
  color: var(--lime);
}

.page-faq .faq-hero__device {
  margin: 2rem 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.page-faq .faq-device {
  position: relative;
  width: min(240px, 100%);
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: linear-gradient(160deg, var(--panel), var(--night));
  box-shadow: 0 0 0 1px rgba(168, 255, 96, 0.14), 0 24px 60px rgba(0, 0, 0, 0.55);
}

.page-faq .faq-device__bar {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 5px;
  border-radius: 3px;
  background: var(--line);
  z-index: 2;
}

.page-faq .faq-device__img {
  width: 100%;
  border-radius: 22px;
  object-fit: cover;
}

.page-faq .faq-hero__device figcaption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--steel);
  text-align: center;
}

/* ---------- 三步自查 ---------- */
.page-faq .faq-check-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-faq .faq-check {
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--brand-green);
  border-radius: var(--radius);
}

.page-faq .faq-check__label {
  margin: 0 0 0.75rem;
}

.page-faq .faq-check__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-check p:not(.faq-check__label) {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 浅色步骤区 ---------- */
.page-faq .faq-block--light {
  margin-top: clamp(2.5rem, 7vw, 4rem);
  padding: clamp(1.25rem, 4vw, 2.75rem);
  background: var(--mist);
  color: var(--ink);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-block--light .section-head__title {
  color: var(--ink);
}

.page-faq .faq-block--light .section-head__num {
  color: var(--brand-green);
}

.page-faq .faq-block--light .section-head__note {
  color: var(--brand-green);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  counter-reset: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.85rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(6, 33, 15, 0.14);
}

.page-faq .faq-step:last-child {
  border-bottom: 1px solid rgba(6, 33, 15, 0.14);
}

.page-faq .faq-step__num {
  font-size: 1rem;
  font-weight: 600;
  color: var(--brand-green);
  line-height: 1.5;
}

.page-faq .faq-step__title {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: #1f3a2c;
}

/* ---------- 通知与权限 ---------- */
.page-faq .faq-perm {
  margin-top: 1.5rem;
  align-items: start;
}

.page-faq .faq-perm__intro p {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-perm__intro p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-perm__intro .mono {
  color: var(--lime);
  font-size: 0.86rem;
  padding: 0.1rem 0.3rem;
  background: rgba(168, 255, 96, 0.08);
  border-radius: var(--radius);
}

.page-faq .faq-perm__list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-perm__list li {
  padding: 1rem 1.1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-perm__list p {
  margin: 0.55rem 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 同步 ---------- */
.page-faq .faq-block--deep {
  margin-top: clamp(2.5rem, 7vw, 4rem);
  padding: clamp(1.25rem, 4vw, 2.75rem);
  background: linear-gradient(200deg, var(--deep) 0%, var(--night) 90%);
  border: 1px solid var(--line);
}

.page-faq .faq-sync {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
  align-items: start;
}

.page-faq .faq-sync__copy p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-sync__list {
  list-style: none;
  margin: 0 0 1.15rem;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-faq .faq-sync__list li {
  padding: 0.5rem 0 0.5rem 0.9rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-sync__list .mono {
  display: inline-block;
  margin-right: 0.55rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

.page-faq .faq-sync__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-sync__figure img {
  width: 100%;
  object-fit: cover;
}

.page-faq .faq-sync__figure figcaption {
  padding: 0.7rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--steel);
  border-top: 1px solid var(--line);
}

/* ---------- 小屏对照 ---------- */
.page-faq .faq-duel {
  margin-top: 1.5rem;
}

.page-faq .faq-duel__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-duel__cards {
  display: grid;
  gap: 1rem;
  margin-top: 1.35rem;
}

.page-faq .faq-duel__cards .card {
  border-top: 2px solid var(--orange);
}

.page-faq .faq-duel__cards .card:nth-child(2) {
  border-top-color: var(--lime);
}

.page-faq .faq-duel__note {
  margin: 1.35rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--steel);
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 折叠列表 ---------- */
.page-faq .faq-toggles {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-toggle {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  transition: border-color 160ms var(--ease);
}

.page-faq .faq-toggle[open] {
  border-color: var(--brand-green);
}

.page-faq .faq-toggle__summary {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--mist);
}

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

.page-faq .faq-toggle__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--lime);
}

.page-faq .faq-toggle[open] .faq-toggle__summary::after {
  content: "−";
}

.page-faq .faq-toggle__summary .mono {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-toggle__summary:hover,
.page-faq .faq-toggle__summary:focus-visible {
  color: var(--lime);
}

.page-faq .faq-toggle__body {
  padding: 0 1rem 1.1rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toggle__body p {
  margin: 0.9rem 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 联系准备 ---------- */
.page-faq .faq-block--contact {
  margin-top: clamp(2.5rem, 7vw, 4rem);
  padding: clamp(1.25rem, 4vw, 2.75rem);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
}

.page-faq .faq-prep {
  margin-top: 1.5rem;
  align-items: start;
}

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

.page-faq .faq-prep__list li {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: 0.6rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-prep__list .mono {
  font-size: 0.75rem;
  color: var(--lime);
  line-height: 1.9;
}

.page-faq .faq-prep__hint {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-prep__contact {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--night);
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
}

.page-faq .faq-prep__mail-label {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-prep__mail-title {
  margin: 0.35rem 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-faq .faq-prep__contact > p:not(.faq-prep__mail-label):not(.faq-prep__mail-title) {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-prep__meta {
  margin: 1.1rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.page-faq .faq-prep__meta div {
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-prep__meta dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-prep__meta dd {
  margin: 0.3rem 0 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-next {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-faq .faq-top-wrap {
  margin: 1.75rem 0 0;
}

.page-faq .faq-top {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.2rem;
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-check-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-hero {
    padding: clamp(1.75rem, 3.5vw, 3rem);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(220px, 0.85fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    align-items: center;
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(3.2rem, 5.4vw, 5rem);
  }

  .page-faq .faq-hero__index {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    border-top: 0;
    gap: 0;
  }

  .page-faq .faq-hero__index-item a {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
    padding: 0.85rem 0.4rem 0.85rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
    padding-left: 0.7rem;
    font-size: 0.88rem;
  }

  .page-faq .faq-hero__index-item:last-child a {
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-hero__device {
    margin-top: 0;
    align-self: center;
  }

  .page-faq .faq-device {
    width: min(270px, 100%);
  }

  .page-faq .faq-perm {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-faq .faq-perm__list {
    margin-top: 0;
  }

  .page-faq .faq-sync {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
  }

  .page-faq .faq-step {
    grid-template-columns: 3.5rem 1fr;
    gap: 1.25rem;
    padding: 1.15rem 0;
  }

  .page-faq .faq-step__num {
    font-size: 1.15rem;
  }

  .page-faq .faq-block--light,
  .page-faq .faq-block--deep,
  .page-faq .faq-block--contact {
    padding: clamp(2rem, 4vw, 3.25rem);
  }

  .page-faq .faq-prep {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-faq .faq-prep__contact {
    margin-top: 0;
  }

  .page-faq .faq-toggle__summary {
    font-size: 1.1rem;
    padding: 1.05rem 1.25rem;
  }

  .page-faq .faq-toggle__body {
    padding: 0 1.25rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__index-item a,
  .page-faq .faq-toggle {
    transition: none;
  }
}