/* ===== 使用教程页 page-faq ===== */
.page-faq {
  --faq-pad: clamp(20px, 3.2vw, 40px);
  --faq-gap: clamp(16px, 2.4vw, 28px);
  background: var(--green-deep);
  color: var(--on-dark);
}

/* --- 首屏 --- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(30px, 5vw, 64px);
  background: linear-gradient(180deg, #0E3B2E 0%, #07231B 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-faq .crumbs a {
  color: var(--orange-soft);
  text-decoration: none;
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  text-decoration: underline;
}

.page-faq .crumbs > span:last-child {
  color: var(--on-dark);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  margin-top: 22px;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(27px, 6.2vw, 52px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--on-dark-strong);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--on-dark);
}

.page-faq .faq-hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__cell {
  padding: 14px 12px 16px;
  background: rgba(7, 35, 27, .82);
}

.page-faq .faq-hero__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .faq-hero__meta dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--lime);
  white-space: nowrap;
}

/* --- 主体两栏 --- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 34px);
  padding-block: clamp(24px, 4vw, 48px) clamp(40px, 6vw, 80px);
}

.page-faq .faq-side {
  border-top: 3px solid var(--orange);
  padding-top: 14px;
}

.page-faq .faq-side__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

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

.page-faq .faq-toc__link {
  display: block;
  flex: 0 0 auto;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--on-dark);
  text-decoration: none;
  white-space: nowrap;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line-soft);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--on-dark-strong);
  border-left-color: var(--orange-soft);
  background: rgba(31, 163, 184, .14);
}

.page-faq .faq-toc__link.is-active {
  color: var(--lime);
  border-left-color: var(--orange);
  background: rgba(245, 134, 43, .14);
}

.page-faq .faq-side__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-dark);
  opacity: .8;
}

.page-faq .faq-flow > * + * {
  margin-top: clamp(16px, 2.2vw, 26px);
}

/* --- 区块底板 --- */
.page-faq .faq-sec {
  padding: var(--faq-pad);
  scroll-margin-top: 108px;
}

.page-faq .faq-sec--sand {
  background: var(--sand);
  color: var(--ink);
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-sec--green {
  background: var(--green);
  color: var(--on-dark);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-sec--indigo {
  background: var(--indigo);
  color: var(--on-dark);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-sec--deep {
  background: var(--green-deep);
  color: var(--on-dark);
  border-left: 3px solid var(--orange);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.page-faq .faq-sec__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-sec--indigo .faq-sec__no {
  color: var(--lime);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(20px, 2.7vw, 30px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-faq .faq-sec__desc {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-sec--sand .faq-sec__desc {
  color: var(--ink-soft);
}

/* --- 图片 --- */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
}

.page-faq .faq-sec--sand .faq-figure {
  border-color: rgba(18, 16, 14, .16);
}

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

.page-faq .faq-figure__cap {
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cyan);
  background: rgba(7, 35, 27, .4);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-sec--sand .faq-figure__cap {
  color: var(--ink-soft);
  background: rgba(18, 16, 14, .05);
  border-top-color: rgba(18, 16, 14, .14);
}

/* --- 三步流程 --- */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px 16px 20px;
  background: rgba(255, 255, 255, .62);
  border: 1px solid rgba(18, 16, 14, .1);
  border-top: 3px solid var(--orange);
}

.page-faq .faq-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--lime);
  background: var(--green);
}

.page-faq .faq-step__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* --- 设备对照 --- */
.page-faq .faq-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-compare__col {
  padding: 18px 16px 20px;
  background: rgba(7, 35, 27, .55);
  border-top: 3px solid var(--cyan);
}

.page-faq .faq-compare__col--mob {
  background: rgba(59, 46, 110, .58);
  border-top-color: var(--orange);
}

.page-faq .faq-compare__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime);
}

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

.page-faq .faq-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

/* --- 热区颜色阶梯 --- */
.page-faq .faq-heat {
  margin-bottom: 22px;
}

.page-faq .faq-heat__scale {
  height: 24px;
  background: linear-gradient(90deg, #0E3B2E 0%, #1FA3B8 38%, #F5862B 70%, #C6F24E 100%);
  border: 1px solid rgba(18, 16, 14, .22);
}

.page-faq .faq-heat__ticks {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
}

/* --- 折叠问答 --- */
.page-faq .faq-qa {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-sec--sand .faq-qa {
  border-bottom-color: rgba(18, 16, 14, .16);
}

.page-faq .faq-sec--indigo .faq-qa {
  border-bottom-color: rgba(244, 239, 230, .22);
}

.page-faq .faq-qa__q {
  position: relative;
  display: block;
  padding: 15px 40px 15px 14px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.62;
  cursor: pointer;
  border-left: 3px solid transparent;
  list-style: none;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

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

.page-faq .faq-qa__q::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-qa[open] .faq-qa__q {
  border-left-color: var(--orange);
  background: rgba(245, 134, 43, .07);
}

.page-faq .faq-qa[open] .faq-qa__q::after {
  content: "–";
}

.page-faq .faq-qa__q:hover {
  background: rgba(31, 163, 184, .12);
}

.page-faq .faq-qa__a {
  padding: 2px 16px 18px 17px;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-qa__a p {
  margin: 0;
  max-width: 46ch;
}

.page-faq .faq-sec--sand .faq-qa__a {
  color: var(--ink-soft);
}

/* --- 分区轮次网格 --- */
.page-faq .faq-zones {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-zone {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(7, 35, 27, .75);
}

.page-faq .faq-zone__name {
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-zone__round {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 3px 8px;
  color: var(--green-deep);
  background: var(--lime);
  white-space: nowrap;
}

.page-faq .faq-note {
  margin: 0 0 20px;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.8;
}

/* --- 排错清单 --- */
.page-faq .faq-warn {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-warn__item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(18, 16, 14, .14);
}

.page-faq .faq-warn__item::before {
  content: "";
  width: 0;
  height: 0;
  margin-top: 6px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 10px solid var(--wine);
}

.page-faq .faq-warn__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
}

.page-faq .faq-warn__text {
  margin: 0;
  max-width: 50ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* --- 反馈清单 --- */
.page-faq .faq-report {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-report__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  font-size: 14.5px;
  line-height: 1.72;
  background: rgba(31, 163, 184, .1);
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-report__k {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

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

/* --- 中等屏幕 --- */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

/* --- 桌面两栏 --- */
@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .faq-toc {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-qa__q {
    transition: none;
  }
}