/* ===== 使用教程 · 页面专属样式（作用域 .page-faq） ===== */

.page-faq {
  --faq-rule: rgba(20, 49, 42, 0.16);
  --faq-rule-soft: rgba(20, 49, 42, 0.08);
}

.page-faq section[id] {
  scroll-margin-top: 88px;
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  display: grid;
  gap: 22px;
  padding-block: 24px 40px;
}

.page-faq .faq-head__lead .page-head__title {
  margin: 10px 0 0;
  max-width: 15em;
}

.page-faq .faq-head__aside .page-head__lede {
  margin: 0 0 20px;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump__item {
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-700);
  font-size: var(--step--1);
  font-weight: 700;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--paper-100);
}

@media (min-width: 900px) {
  .page-faq .faq-head {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
    gap: 56px;
    padding-block: 36px 64px;
  }
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps .section__head {
  margin-bottom: 26px;
}

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .step {
  margin: 0;
}

.page-faq .step__link {
  position: relative;
  display: block;
  height: 100%;
  padding: 26px 24px 24px 30px;
  border: 1px solid var(--faq-rule);
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(246, 241, 231, 0.92), rgba(234, 226, 211, 0.5));
  color: var(--text);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .step__link::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 26px;
  bottom: 26px;
  width: 2px;
  border-radius: 2px;
  background: var(--ink-700);
  transition: background var(--dur) var(--ease);
}

.page-faq .step__link:hover,
.page-faq .step__link:focus-visible {
  transform: translateX(2px);
  border-color: var(--orange);
  box-shadow: 0 14px 30px -22px rgba(14, 39, 33, 0.7);
}

.page-faq .step__link:hover::before,
.page-faq .step__link:focus-visible::before {
  background: var(--orange);
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .step__title {
  margin: 14px 0 8px;
  font-size: var(--step-1);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink-900);
}

.page-faq .step__body {
  margin: 0 0 18px;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--text);
}

.page-faq .step__cue {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--orange);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--ink-700);
}

@media (min-width: 900px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-faq .steps .step:nth-child(2) {
    transform: translateY(26px);
  }
}

/* ---------- 关注列表管理 ---------- */
.page-faq .faq-follow__intro {
  max-width: 60ch;
  margin-bottom: 28px;
}

.page-faq .faq-follow__intro .lede {
  margin-top: 14px;
}

.page-faq .faq-bleed {
  margin: 0 0 30px;
  padding: 0;
}

.page-faq .faq-bleed img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 20px;
}

.page-faq .faq-bleed__cap {
  margin-top: 10px;
  font-size: var(--step--2);
  line-height: 1.6;
  color: var(--moss);
}

.page-faq .faq-follow__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-note {
  padding: 20px 20px 22px;
  border-top: 3px solid var(--ink-700);
  border-radius: 0 0 14px 14px;
  background: var(--paper-200);
}

.page-faq .faq-note__title {
  margin: 0 0 10px;
  font-size: var(--step-0);
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink-900);
}

.page-faq .faq-note p {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--text);
}

@media (min-width: 720px) {
  .page-faq .faq-follow__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

/* ---------- 登录订阅与跨端同步 ---------- */
.page-faq .faq-sync__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-sync__steps {
  list-style: none;
  margin: 24px 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-sync__steps li {
  position: relative;
  padding-left: 38px;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-sync__n {
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--ink-700);
  color: var(--paper-100);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
}

.page-faq .faq-sync__figure {
  margin: 0;
  padding: 6px;
}

.page-faq .faq-sync__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 20px;
  transform: rotate(-1.2deg);
}

.page-faq .faq-sync__figure figcaption {
  margin-top: 14px;
  font-size: var(--step--2);
  line-height: 1.6;
  color: var(--moss);
}

.page-faq .sync-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-top: 36px;
  padding: 28px 20px;
  border: 1px dashed var(--faq-rule);
  border-radius: 20px;
  background: rgba(207, 221, 213, 0.3);
}

.page-faq .sync-device {
  padding: 14px 18px;
  border: 2px solid var(--ink-700);
  background: var(--paper-100);
  color: var(--ink-700);
  font-family: var(--font-num);
  font-size: var(--step--1);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .sync-device--phone {
  border-radius: 20px;
  transform: translateY(-8px);
}

.page-faq .sync-device--desktop {
  border-radius: 8px;
  transform: translateY(8px);
}

.page-faq .sync-line {
  flex: 0 0 56px;
  height: 0;
  margin: 0 6px;
  border-top: 2px dashed var(--erhai);
}

@media (min-width: 900px) {
  .page-faq .faq-sync__grid {
    grid-template-columns: 1.35fr 0.65fr;
    align-items: start;
    gap: 48px;
  }
}

@media (max-width: 560px) {
  .page-faq .sync-device {
    padding: 10px 12px;
    font-size: 12.5px;
  }

  .page-faq .sync-line {
    flex-basis: 26px;
  }
}

@media (max-width: 899px) {
  .page-faq .faq-sync__figure img {
    transform: none;
  }
}

/* ---------- 筛选与对照 ---------- */
.page-faq .faq-filter__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-filter__copy .lede + .lede {
  margin-top: 16px;
}

.page-faq .faq-filter__panel {
  display: grid;
  gap: 22px;
  padding: 26px 22px;
  border: 1px solid var(--faq-rule);
  border-radius: 20px;
  background: var(--paper-100);
}

.page-faq .filter-group__label {
  display: block;
  margin-bottom: 10px;
  font-size: var(--step--2);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--moss);
}

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

.page-faq .faq-filter__hint {
  margin: 0;
  font-size: var(--step--2);
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .faq-inline-link {
  color: var(--ink-700);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--orange-deep);
}

.page-faq .faq-compare {
  display: grid;
  gap: 14px;
  margin-top: 40px;
}

.page-faq .faq-compare__col {
  padding: 20px;
  border-radius: 16px;
  background: var(--paper-200);
}

.page-faq .faq-compare__col--right {
  background: rgba(59, 124, 147, 0.12);
}

.page-faq .faq-compare__label {
  margin: 0 0 14px;
  font-size: var(--step--2);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--moss);
}

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

.page-faq .faq-compare__bars .data-bar {
  display: block;
  height: 10px;
  border-radius: 5px;
  background: rgba(20, 49, 42, 0.1);
  overflow: hidden;
}

.page-faq .faq-compare__bars .data-bar__fill {
  display: block;
  height: 100%;
  border-radius: 5px;
  background: var(--ink-700);
}

.page-faq .faq-compare__col--right .data-bar__fill {
  background: var(--erhai);
}

.page-faq .faq-compare__bars .data-bar:nth-child(1) .data-bar__fill { width: 84%; }
.page-faq .faq-compare__bars .data-bar:nth-child(2) .data-bar__fill { width: 61%; }
.page-faq .faq-compare__bars .data-bar:nth-child(3) .data-bar__fill { width: 73%; }
.page-faq .faq-compare__bars .data-bar:nth-child(4) .data-bar__fill { width: 47%; }

.page-faq .faq-compare__col--right .faq-compare__bars .data-bar:nth-child(1) .data-bar__fill { width: 58%; }
.page-faq .faq-compare__col--right .faq-compare__bars .data-bar:nth-child(2) .data-bar__fill { width: 77%; }
.page-faq .faq-compare__col--right .faq-compare__bars .data-bar:nth-child(3) .data-bar__fill { width: 52%; }
.page-faq .faq-compare__col--right .faq-compare__bars .data-bar:nth-child(4) .data-bar__fill { width: 69%; }

.page-faq .faq-compare__cap {
  margin: 12px 0 0;
  font-size: var(--step--2);
  line-height: 1.7;
  color: var(--moss);
}

@media (min-width: 720px) {
  .page-faq .faq-compare {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-filter__grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 48px;
  }
}

/* ---------- 常见疑问 ---------- */
.page-faq .qa-groups {
  display: grid;
  gap: 34px;
}

.page-faq .qa-group__title {
  display: flex;
  align-items: center;
  margin: 0 0 14px;
  font-size: var(--step-0);
  font-weight: 800;
  color: var(--ink-900);
}

.page-faq .qa-group__mark {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 10px;
  background: var(--orange);
}

.page-faq .qa-list {
  display: grid;
}

.page-faq .qa {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .qa:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa__q {
  position: relative;
  display: block;
  list-style: none;
  padding: 14px 34px 14px 0;
  cursor: pointer;
  font-size: var(--step--1);
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-700);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--orange-deep);
}

.page-faq .qa[open] .qa__q {
  color: var(--ink-900);
}

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

.page-faq .qa__a {
  padding: 0 20px 16px 0;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: var(--text);
}

@media (min-width: 960px) {
  .page-faq .qa-groups {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
    gap: 32px;
  }
}

/* ---------- 结尾通道 ---------- */
.page-faq .faq-next__box {
  display: grid;
  gap: 24px;
  padding: 30px 24px;
  border-radius: 24px;
  background: var(--ink-900);
}

.page-faq .faq-next__title {
  margin: 0 0 10px;
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper-100);
}

.page-faq .faq-next__text {
  margin: 0;
  font-size: var(--step--1);
  line-height: 1.75;
  color: rgba(246, 241, 231, 0.78);
}

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

@media (min-width: 800px) {
  .page-faq .faq-next__box {
    grid-template-columns: 1.4fr 0.6fr;
    align-items: center;
    gap: 40px;
    padding: 44px 40px;
  }
}