.page-faq {
  --tut-rule: 1px solid rgba(28, 59, 90, .18);
  --tut-rule-soft: 1px solid rgba(28, 59, 90, .13);
}

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

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  padding: clamp(24px, 5vw, 54px) 0 clamp(24px, 4vw, 44px);
  border-bottom: var(--tut-rule);
  background:
    repeating-linear-gradient(90deg, rgba(28, 59, 90, .055) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(28, 59, 90, .045) 0 1px, transparent 1px 72px),
    linear-gradient(180deg, rgba(46, 127, 168, .10), rgba(247, 243, 234, 0) 66%);
}

.page-faq .tut-hero__meta {
  margin: 20px 0 10px;
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-lake);
}

.page-faq .tut-hero__title {
  margin: 0 0 16px;
  max-width: 20em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--c-indigo);
}

.page-faq .tut-hero__lead {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-faq .tut-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-hero__figure {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  border: var(--tut-rule);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-paper);
}

.page-faq .tut-hero__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

/* ---------- 主体骨架 ---------- */
.page-faq .tut-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: clamp(26px, 4vw, 52px);
  padding-bottom: clamp(36px, 5vw, 72px);
}

.page-faq .tut-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(34px, 5vw, 62px);
  min-width: 0;
}

.page-faq .tut-block {
  min-width: 0;
  scroll-margin-top: 112px;
}

.page-faq .tut-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 2px solid rgba(28, 59, 90, .16);
}

.page-faq .tut-block__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--c-indigo);
}

.page-faq .tut-block .prose {
  max-width: 38em;
}

/* ---------- 章节索引 ---------- */
.page-faq .tut-rail {
  padding: 14px 0 4px;
  border-top: 2px solid var(--c-indigo);
}

.page-faq .tut-rail__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.page-faq .tut-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .tut-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .tut-rail__nav a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: var(--tut-rule);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .84);
  color: var(--c-indigo);
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .tut-rail__nav a .mono {
  font-size: 11px;
  color: var(--c-lake);
}

.page-faq .tut-rail__nav a:hover,
.page-faq .tut-rail__nav a:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(18, 211, 192, .13);
}

/* ---------- 上手三步 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border: var(--tut-rule);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-paper);
}

.page-faq .step {
  position: relative;
  padding: 24px 20px 26px;
}

.page-faq .step + .step {
  border-top: var(--tut-rule-soft);
  border-left: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 46px;
  height: 3px;
  background: var(--c-cyan);
}

.page-faq .step:nth-child(2)::before {
  background: var(--c-lake);
}

.page-faq .step:nth-child(3)::before {
  background: var(--c-gold);
}

.page-faq .step__idx {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid rgba(46, 127, 168, .32);
  border-radius: 3px;
  background: rgba(46, 127, 168, .08);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--c-lake);
}

.page-faq .step__title {
  margin: 13px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--c-indigo);
}

.page-faq .step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-text);
}

.page-faq .tut-figure {
  margin: 26px 0 0;
  max-width: 360px;
}

.page-faq .tut-figure img {
  display: block;
  width: 100%;
  border: var(--tut-rule);
  border-radius: 6px;
  box-shadow: var(--shadow-paper);
}

.page-faq .tut-figure__cap {
  margin: 10px 0 0;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--c-stone);
}

/* ---------- 积分区间 ---------- */
.page-faq .zones {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .zone {
  padding: 16px 18px;
  background: #fff;
  border: var(--tut-rule);
  border-left: 3px solid var(--c-lake);
  border-radius: 4px;
}

.page-faq .zone:nth-child(2) {
  border-left-color: var(--c-cyan);
}

.page-faq .zone:nth-child(3) {
  border-left-color: var(--c-lotus);
}

.page-faq .zone:nth-child(4) {
  border-left-color: var(--c-amber);
}

.page-faq .zone__name {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 16px;
  color: var(--c-indigo);
}

.page-faq .zone p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-faq .hint {
  margin-top: 22px;
  padding: 20px 22px;
  border: var(--tut-rule);
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(18, 211, 192, .12), rgba(201, 147, 47, .12));
}

.page-faq .hint__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 15px;
  color: var(--c-indigo);
}

.page-faq .hint__list {
  margin: 0;
  padding-left: 1.25em;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-faq .hint__list li::marker {
  color: var(--c-cyan);
  font-family: var(--font-data);
}

/* ---------- 进失球图例 ---------- */
.page-faq .legend {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .legend__item {
  display: flex;
  gap: 13px;
  padding: 16px 18px;
  background: #fff;
  border: var(--tut-rule);
  border-radius: 4px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-faq .legend__swatch {
  flex: 0 0 auto;
  width: 12px;
  align-self: stretch;
  border-radius: 2px;
}

.page-faq .legend__swatch--cyan {
  background: var(--c-cyan);
}

.page-faq .legend__swatch--amber {
  background: var(--c-amber);
}

.page-faq .legend__item strong {
  color: var(--c-indigo);
}

.page-faq .pitfall {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed rgba(28, 59, 90, .28);
}

.page-faq .pitfall__title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-stone);
}

.page-faq .pitfall__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .pitfall__list dt {
  margin-bottom: 5px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-indigo);
}

.page-faq .pitfall__list dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

/* ---------- 关注列表展开组 ---------- */
.page-faq .folds {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}

.page-faq .tut-fold {
  border: var(--tut-rule);
  border-radius: 4px;
  background: #fff;
  overflow: hidden;
}

.page-faq .tut-fold[open] {
  border-color: rgba(18, 211, 192, .55);
}

.page-faq .tut-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--c-indigo);
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .tut-fold summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 18px;
  line-height: 1;
  color: var(--c-lake);
}

.page-faq .tut-fold[open] summary::after {
  content: "–";
  color: var(--c-cyan);
}

.page-faq .tut-fold summary:hover {
  background: rgba(46, 127, 168, .06);
}

.page-faq .tut-fold .fold__body {
  padding: 14px 18px 18px;
  border-top: 1px dashed rgba(28, 59, 90, .16);
}

.page-faq .tut-fold .fold__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-text);
}

/* ---------- 版本对照 ---------- */
.page-faq .vercmp {
  margin-top: 22px;
  border: var(--tut-rule);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-paper);
}

.page-faq .vercmp__row {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--tut-rule-soft);
}

.page-faq .vercmp__row:first-child {
  border-top: 0;
}

.page-faq .vercmp__row--head {
  background: rgba(28, 59, 90, .06);
  font-size: 11.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.page-faq .vercmp__key,
.page-faq .vercmp__cell {
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-faq .vercmp__key {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13.5px;
  color: var(--c-indigo);
  background: rgba(28, 59, 90, .05);
}

.page-faq .vercmp__row--head .vercmp__cell {
  padding: 12px 16px;
}

.page-faq .vercmp__cell--now {
  background: rgba(18, 211, 192, .08);
}

.page-faq .vercmp__tag {
  display: inline-block;
  min-width: 24px;
  margin-right: 8px;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(92, 107, 112, .16);
  color: var(--c-stone);
  font-size: 10.5px;
  line-height: 1.5;
  text-align: center;
}

.page-faq .vercmp__tag--now {
  background: rgba(18, 211, 192, .24);
  color: #0a655c;
}

/* ---------- 收藏流程 ---------- */
.page-faq .favflow {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.page-faq .favflow__step {
  display: flex;
  gap: 13px;
  padding: 16px 18px;
  border: 1px solid rgba(142, 123, 181, .38);
  border-radius: 5px;
  background: rgba(142, 123, 181, .10);
}

.page-faq .favflow__num {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--c-lotus);
  color: #fff;
  font-size: 12px;
}

.page-faq .favflow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-faq .tut-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--c-stone);
}

.page-faq .tut-note a {
  color: var(--c-lake);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 客服路径 ---------- */
.page-faq .support__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  border-top: var(--tut-rule);
}

.page-faq .support__list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: var(--tut-rule-soft);
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--c-text);
}

.page-faq .support__k {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-lake);
}

.page-faq .support__list a {
  color: var(--c-lake);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 尾部横幅 ---------- */
.page-faq .tut-band__inner {
  max-width: 46em;
}

.page-faq .tut-band__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(18px, 3vw, 24px);
  line-height: 1.35;
}

.page-faq .tut-band__text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  opacity: .92;
}

.page-faq .tut-band__cta {
  margin: 0;
}

/* ---------- 进入视口的段落动效 ---------- */
.page-faq [data-reveal].is-visible {
  animation: tut-rise 520ms var(--ease) both;
}

@keyframes tut-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .zones {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .page-faq .legend {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .step + .step {
    border-top: 0;
    border-left: var(--tut-rule-soft);
  }
}

@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .favflow {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .support__list li {
    grid-template-columns: 108px 1fr;
    gap: 18px;
    align-items: baseline;
  }

  .page-faq .vercmp__row {
    grid-template-columns: 112px minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .vercmp__tag {
    display: none;
  }
}

@media (min-width: 960px) {
  .page-faq .tut-layout {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 58px;
    align-items: start;
  }

  .page-faq .tut-rail {
    position: sticky;
    top: 108px;
  }

  .page-faq .tut-rail__nav {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .tut-rail__nav a {
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 9px 0 9px 12px;
    white-space: normal;
  }

  .page-faq .tut-rail__nav a:hover,
  .page-faq .tut-rail__nav a:focus-visible {
    border-left-color: var(--c-cyan);
    background: rgba(18, 211, 192, .10);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-rail__nav a,
  .page-faq .tut-fold summary {
    transition: none;
  }

  .page-faq [data-reveal].is-visible {
    animation: none;
  }
}