/* ===== 使用指南 /guide/ ===== */

.page-faq {
  display: block;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 max(16px, min(48px, 5vw)) 84px;
  color: var(--bone);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq * {
  box-sizing: border-box;
}

.page-faq h2,
.page-faq h3 {
  margin: 0;
  letter-spacing: -0.01em;
}

/* ---------- 页头 ---------- */

.page-faq .faq-head {
  padding: 36px 0 32px;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

.page-faq .faq-crumbs__sep {
  color: var(--line);
}

.page-faq .faq-crumbs [aria-current="page"] {
  color: var(--bone);
}

.page-faq .faq-head__kicker {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--whistle);
}

.page-faq .faq-head__kicker .idx {
  color: var(--mist);
}

.page-faq .faq-head__title {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(34px, 7.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--bone);
}

.page-faq .faq-head__lede {
  max-width: 40em;
  margin: 20px 0 0;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.82);
}

.page-faq .faq-head__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  margin: 30px 0 0;
  border: 1px solid var(--line);
  background: var(--board);
}

.page-faq .faq-head__meta-item {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head__meta-item:last-child {
  border-right: 0;
}

.page-faq .faq-head__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-head__meta dd {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--bone);
}

/* ---------- 疑问筛选 ---------- */

.page-faq .faq-filter {
  margin-top: 44px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background: var(--board);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-filter__head {
  margin-bottom: 16px;
}

.page-faq .faq-filter__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .faq-filter__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-chip:hover {
  color: var(--bone);
  border-color: var(--whistle);
}

.page-faq .faq-radio:focus-visible ~ .faq-filter__bar {
  outline: 2px solid var(--whistle);
  outline-offset: 4px;
}

.page-faq #faqcat-all:checked ~ .faq-filter__bar [for="faqcat-all"],
.page-faq #faqcat-lineup:checked ~ .faq-filter__bar [for="faqcat-lineup"],
.page-faq #faqcat-search:checked ~ .faq-filter__bar [for="faqcat-search"],
.page-faq #faqcat-view:checked ~ .faq-filter__bar [for="faqcat-view"],
.page-faq #faqcat-save:checked ~ .faq-filter__bar [for="faqcat-save"],
.page-faq #faqcat-feedback:checked ~ .faq-filter__bar [for="faqcat-feedback"] {
  background: var(--whistle);
  border-color: var(--whistle);
  color: var(--ink);
  font-weight: 700;
}

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

.page-faq .faq-quick__item {
  max-height: 420px;
  overflow: hidden;
  margin-top: 10px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--ink);
  opacity: 1;
  transition: max-height 0.18s var(--ease), opacity 0.18s var(--ease),
    padding 0.18s var(--ease), margin 0.18s var(--ease), border-width 0.18s var(--ease);
}

.page-faq .faq-quick__item:first-child {
  margin-top: 16px;
}

.page-faq .faq-quick__q {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--bone);
}

.page-faq .faq-quick__a {
  margin: 9px 0 0;
  font-family: var(--font-serif);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(242, 239, 230, 0.78);
}

.page-faq #faqcat-lineup:checked ~ .faq-quick .faq-quick__item:not([data-cat="lineup"]),
.page-faq #faqcat-search:checked ~ .faq-quick .faq-quick__item:not([data-cat="search"]),
.page-faq #faqcat-view:checked ~ .faq-quick .faq-quick__item:not([data-cat="view"]),
.page-faq #faqcat-save:checked ~ .faq-quick .faq-quick__item:not([data-cat="save"]),
.page-faq #faqcat-feedback:checked ~ .faq-quick .faq-quick__item:not([data-cat="feedback"]) {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-width: 0;
}

/* ---------- 章节头 ---------- */

.page-faq .faq-sec-head {
  display: grid;
  grid-template-columns: 46px 1fr;
  column-gap: 16px;
  row-gap: 10px;
  margin-top: 68px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec-head__idx {
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--whistle);
}

.page-faq .faq-sec-head__title {
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.22;
  color: var(--bone);
}

.page-faq .faq-sec-head__desc {
  grid-column: 2;
  max-width: 44em;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--mist);
}

/* ---------- 通用正文 ---------- */

.page-faq .faq-body {
  max-width: 42em;
  margin: 20px 0 0;
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.82);
}

/* ---------- 配图 ---------- */

.page-faq .faq-shot {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--layer);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: contrast(1.04) saturate(0.92);
}

.page-faq .faq-shot--compact img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-shot figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 步骤卡 ---------- */

.page-faq .faq-step-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-step {
  border: 1px solid var(--line);
  background: var(--board);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  border-color: var(--whistle);
  box-shadow: var(--shadow-paper);
}

.page-faq .faq-step__box {
  display: block;
}

.page-faq .faq-step__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__sum::marker {
  content: "";
}

.page-faq .faq-step__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--whistle);
}

.page-faq .faq-step__box[open] .faq-step__sum::after {
  content: "\2013";
}

.page-faq .faq-step__no {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--whistle);
}

.page-faq .faq-step__label {
  flex: 1 1 220px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-faq .faq-step__time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-step__body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-step__box[open] .faq-step__body {
  animation: faqFadeDown 0.22s var(--ease);
}

@keyframes faqFadeDown {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-step__body p {
  margin: 16px 0 0;
}

.page-faq .faq-step__list {
  margin: 12px 0 0;
  padding-left: 18px;
  list-style: none;
}

.page-faq .faq-step__list li {
  position: relative;
  margin-top: 8px;
  padding-left: 14px;
}

.page-faq .faq-step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--whistle);
}

.page-faq .faq-tip {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--whistle);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.65;
}

/* ---------- 阵容标签 ---------- */

.page-faq .faq-tagcards {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-tagcard {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--board);
  cursor: help;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-tagcard:hover,
.page-faq .faq-tagcard:focus-visible {
  background: var(--layer);
  border-color: var(--whistle);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-tagcard__swatch {
  display: block;
  width: 100%;
  height: 6px;
  margin-bottom: 14px;
}

.page-faq .faq-tagcard__swatch--ok {
  background: var(--verify);
}

.page-faq .faq-tagcard__swatch--wait {
  background: var(--shirt);
}

.page-faq .faq-tagcard__swatch--idle {
  background: var(--mist);
}

.page-faq .faq-tagcard__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-tagcard__name {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--bone);
}

.page-faq .faq-tagcard__detail {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.68;
  color: rgba(242, 239, 230, 0.78);
  transition: max-height 0.25s var(--ease), opacity 0.2s var(--ease), margin-top 0.25s var(--ease);
}

.page-faq .faq-tagcard:hover .faq-tagcard__detail,
.page-faq .faq-tagcard:focus-visible .faq-tagcard__detail,
.page-faq .faq-tagcard:focus-within .faq-tagcard__detail {
  max-height: 340px;
  margin-top: 12px;
  opacity: 1;
}

/* ---------- 检索示例 ---------- */

.page-faq .faq-samples {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .faq-sample {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 14px;
  padding: 14px 16px;
  background: var(--board);
}

.page-faq .faq-sample__type {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-sample__q {
  display: inline-block;
  justify-self: start;
  margin-top: 2px;
  padding: 4px 10px;
  border: 1px solid var(--whistle);
  color: var(--whistle);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.page-faq .faq-sample__a {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(242, 239, 230, 0.74);
}

/* ---------- 宽屏演示带 ---------- */

.page-faq .faq-wide {
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--ink);
  overflow: hidden;
}

.page-faq .faq-wide__ruler {
  display: flex;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--board);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-wide__ruler span {
  flex: 1;
}

.page-faq .faq-wide__ruler span:last-child {
  text-align: right;
}

.page-faq .faq-wide__table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-wide__row {
  display: grid;
  grid-template-columns: 108px 74px minmax(110px, 1fr) minmax(110px, 1fr) 140px 96px 56px;
  gap: 12px;
  min-width: 740px;
  align-items: center;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--bone);
}

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

.page-faq .faq-wide__row--head {
  background: var(--board);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-wide__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--whistle);
}

.page-faq .faq-wide__bars {
  position: relative;
  display: block;
  height: 8px;
  background: var(--line);
}

.page-faq .faq-wide__bars::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 50%;
  background: var(--whistle);
}

.page-faq .faq-wide__row:nth-of-type(3) .faq-wide__bars::after {
  width: 41%;
}

.page-faq .faq-wide__row:nth-of-type(4) .faq-wide__bars::after {
  width: 30%;
}

.page-faq .faq-wide__state {
  display: inline-block;
  justify-self: start;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
}

.page-faq .faq-wide__state--ok {
  color: var(--verify);
}

.page-faq .faq-wide__state--wait {
  color: var(--shirt);
}

.page-faq .faq-wide__star {
  justify-self: center;
  font-size: 15px;
  color: var(--whistle);
}

.page-faq .faq-wide-notes {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-faq .faq-wide-note {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--whistle);
  background: var(--layer);
}

.page-faq .faq-wide-note__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .faq-wide-note p {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.68;
  color: rgba(242, 239, 230, 0.78);
}

/* ---------- 收藏与本地保存 ---------- */

.page-faq .faq-save-grid {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-faq .faq-save-card {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--board);
}

.page-faq .faq-save-card__badge {
  display: inline-block;
  padding: 4px 9px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-save-card__title {
  margin-top: 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .faq-save-card p {
  margin: 9px 0 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 239, 230, 0.78);
}

/* ---------- 异常反馈 ---------- */

.page-faq .faq-feedback__layout {
  display: grid;
  gap: 26px;
  margin-top: 4px;
}

.page-faq .faq-feedback__text p {
  margin: 20px 0 0;
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.72;
  color: rgba(242, 239, 230, 0.82);
}

.page-faq .faq-feedback__steps {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqfb;
}

.page-faq .faq-feedback__steps li {
  position: relative;
  counter-increment: faqfb;
  padding: 10px 0 10px 42px;
  border-bottom: 1px dashed var(--line);
  font-size: 14.5px;
  line-height: 1.62;
  color: rgba(242, 239, 230, 0.82);
}

.page-faq .faq-feedback__steps li::before {
  content: counter(faqfb, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--whistle);
}

.page-faq .faq-channel {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--layer);
}

.page-faq .faq-channel__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 0;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-channel__k {
  flex: 0 0 92px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  padding-top: 3px;
}

.page-faq .faq-channel__v {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--bone);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 延伸入口 ---------- */

.page-faq .faq-next {
  display: grid;
  gap: 1px;
  margin-top: 72px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .faq-next__item {
  display: block;
  padding: 18px 20px;
  background: var(--board);
  text-decoration: none;
  transition: background 0.18s var(--ease);
}

.page-faq .faq-next__item:hover,
.page-faq .faq-next__item:focus-visible {
  background: var(--layer);
}

.page-faq .faq-next__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--whistle);
}

.page-faq .faq-next__t {
  display: block;
  margin-top: 7px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--bone);
}

/* ---------- 响应式 ---------- */

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

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

  .page-faq .faq-sample {
    grid-template-columns: 132px 168px 1fr;
    align-items: center;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-wide-notes {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-faq .faq-feedback__layout {
    grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
    align-items: start;
    gap: 34px;
  }

  .page-faq .faq-feedback__layout .faq-shot {
    margin-top: 20px;
  }
}

@media (min-width: 1440px) {
  .page-faq .faq-step__sum {
    padding: 20px 24px;
  }

  .page-faq .faq-step__body {
    padding: 0 24px 22px;
  }

  .page-faq .faq-next {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step__box[open] .faq-step__body {
    animation: none;
  }

  .page-faq .faq-quick__item,
  .page-faq .faq-tagcard,
  .page-faq .faq-tagcard__detail,
  .page-faq .faq-step {
    transition: none;
  }
}