/* ===== 使用指南页面 ===== */
.page-faq {
  --faq-radius: 6px;
  --faq-gap: 28px;
  padding-bottom: clamp(64px, 8vw, 120px);
}

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

.page-faq .breadcrumb {
  margin-bottom: 20px;
}

/* —— 首屏 —— */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-bottom: clamp(36px, 5.5vw, 60px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__mark {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-hero__digit {
  font-family: var(--font-mono);
  font-size: clamp(54px, 13vw, 100px);
  line-height: 0.82;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.page-faq .faq-hero__digit-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--silver);
  white-space: nowrap;
}

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

.page-faq .faq-hero__title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(27px, 4.6vw, 44px);
  line-height: 1.2;
  letter-spacing: 0.045em;
  color: var(--mist);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 62ch;
}

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

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 36, 28, 0.6);
}

.page-faq .faq-hero__meta-k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-faq .faq-hero__meta-v {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lime);
}

/* —— 主体两栏 —— */
.page-faq .faq-layout {
  margin-top: clamp(34px, 5vw, 62px);
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
}

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

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--silver);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 12px 11px 14px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--line);
  color: var(--silver);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--lime);
  background: rgba(182, 255, 60, 0.07);
  color: var(--lime);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  flex: none;
}

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

/* —— 答案块 —— */
.page-faq .faq-block {
  position: relative;
  padding: clamp(24px, 3vw, 40px);
  margin-bottom: var(--faq-gap);
  background: var(--charcoal);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  scroll-margin-top: 88px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-block:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-block:target {
  border-color: rgba(182, 255, 60, 0.55);
}

.page-faq .faq-block__num {
  display: inline-block;
  margin-bottom: 16px;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--lime);
  border: 1px solid rgba(182, 255, 60, 0.4);
  border-radius: 2px;
}

.page-faq .faq-block__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 29px);
  line-height: 1.28;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-faq .faq-block__intro {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 64ch;
}

.page-faq .faq-block__intro--tight {
  margin-top: 22px;
  margin-bottom: 0;
}

.page-faq .faq-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 60, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* —— 三步上手 —— */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 26px 64px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(182, 255, 60, 0.5), rgba(199, 205, 203, 0.12));
}

.page-faq .faq-step:last-child::after {
  content: none;
}

.page-faq .faq-step__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  background: var(--lime);
}

.page-faq .faq-step:not(:first-child) .faq-step__num {
  background: transparent;
  color: var(--lime);
  border: 1px solid rgba(182, 255, 60, 0.4);
}

.page-faq .faq-step__title {
  margin: 9px 0 8px;
  font-size: 17.5px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 62ch;
}

/* —— 图片 —— */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure .media__img {
  border-radius: 4px;
}

/* —— 要点列表 —— */
.page-faq .faq-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 64ch;
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--lime);
  transform: rotate(45deg);
}

/* —— 三种查找方式 —— */
.page-faq .faq-finder {
  display: grid;
  gap: 12px;
  margin-bottom: 4px;
}

.page-faq .faq-finder__item {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-finder__item:hover {
  border-color: rgba(182, 255, 60, 0.45);
}

.page-faq .faq-finder__key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-finder__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

/* —— 清晰度对比条 —— */
.page-faq .faq-quality {
  list-style: none;
  margin: 24px 0 0;
  padding: 26px 18px 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.page-faq .faq-quality__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  min-width: 0;
  text-align: center;
}

.page-faq .faq-quality__bar {
  width: 100%;
  max-width: 68px;
  height: 46px;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, rgba(199, 205, 203, 0.32), rgba(199, 205, 203, 0.08));
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-quality__item:nth-child(2) .faq-quality__bar {
  height: 92px;
  background: linear-gradient(180deg, rgba(46, 211, 160, 0.72), rgba(46, 211, 160, 0.16));
}

.page-faq .faq-quality__item:nth-child(3) .faq-quality__bar {
  height: 138px;
  background: linear-gradient(180deg, rgba(182, 255, 60, 0.9), rgba(182, 255, 60, 0.2));
}

.page-faq .faq-quality__label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-quality__note {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--silver);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 200ms var(--ease), opacity 200ms var(--ease);
}

.page-faq .faq-quality__item:hover .faq-quality__note {
  max-height: 170px;
  opacity: 1;
}

@media (hover: none) {
  .page-faq .faq-quality__note {
    max-height: 170px;
    opacity: 1;
  }
}

/* —— 设备问题 —— */
.page-faq .faq-device {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-device__row {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-device__row dt {
  position: relative;
  margin-bottom: 8px;
  padding-left: 17px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-faq .faq-device__row dt::before {
  content: "?";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

.page-faq .faq-device__row dd {
  margin: 0 0 0 17px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 62ch;
}

/* —— 联系方式 —— */
.page-faq .faq-contact {
  margin-top: 8px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--key-grad);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--faq-radius) var(--faq-radius) 0;
}

.page-faq .faq-contact__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-faq .faq-contact__lead {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
  max-width: 58ch;
}

.page-faq .faq-contact .contact-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-faq .faq-contact .contact-label {
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.page-faq .faq-contact .contact-value {
  font-size: 15px;
  color: var(--mist);
  word-break: break-word;
}

/* —— 延伸入口 —— */
.page-faq .faq-next {
  margin-top: clamp(26px, 4vw, 44px);
  padding: 24px clamp(20px, 3vw, 32px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.page-faq .faq-next__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-faq .faq-next__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--silver);
  max-width: 70ch;
}

/* —— 桌面布局 —— */
@media (min-width: 720px) {
  .page-faq .faq-finder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(150px, 0.6fr) minmax(0, 2.4fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-hero__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: 28px;
  }
}

/* —— 窄屏 —— */
@media (max-width: 1023px) {
  .page-faq .faq-index {
    position: static;
  }

  .page-faq .faq-index__title {
    margin-bottom: 8px;
  }

  .page-faq .faq-index__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    padding-bottom: 8px;
    border-top: 0;
    scrollbar-width: thin;
  }

  .page-faq .faq-index__list > li {
    flex: none;
  }

  .page-faq .faq-index__link {
    white-space: nowrap;
    padding: 8px 13px;
    background: var(--panel);
    border-left: 0;
    border-bottom: 2px solid transparent;
    border-radius: 3px 3px 0 0;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--lime);
    background: rgba(182, 255, 60, 0.09);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-step {
    padding-left: 54px;
  }

  .page-faq .faq-step__num {
    width: 36px;
    height: 36px;
    font-size: 13px;
  }

  .page-faq .faq-step::after {
    left: 18px;
    top: 40px;
  }

  .page-faq .faq-quality {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px 16px;
  }

  .page-faq .faq-quality__item {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    text-align: left;
    gap: 10px 12px;
  }

  .page-faq .faq-quality__bar {
    width: 40px;
    max-width: none;
    height: 40px !important;
    border-radius: 3px;
    flex: none;
  }

  .page-faq .faq-quality__label {
    flex: none;
  }

  .page-faq .faq-quality__note {
    flex: 1 1 100%;
    max-height: 170px;
    opacity: 1;
  }
}