.page-faq {
  --faq-narrow: 860px;
  --faq-hairline: 2px dashed rgba(11, 14, 23, 0.16);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .tut-crumb {
  background: var(--mist);
  border-bottom: var(--line);
}
.page-faq .tut-crumb .shell {
  padding-top: 14px;
  padding-bottom: 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .tut-intro {
  padding-top: clamp(34px, 6vw, 68px);
  padding-bottom: clamp(40px, 6vw, 76px);
}
.page-faq .tut-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: end;
}
.page-faq .tut-title {
  margin: 14px 0 0;
  font-size: clamp(36px, 7.6vw, 70px);
  font-weight: 200;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-faq .tut-lede {
  margin-top: 18px;
  max-width: 38em;
  color: var(--slate);
  font-size: clamp(16px, 1.6vw, 17px);
  line-height: 1.78;
}
.page-faq .tut-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .tut-facts__item {
  display: grid;
  gap: 4px;
  padding: 14px 14px 15px;
  border: var(--line);
  background: var(--mist);
}
.page-faq .tut-facts__num {
  font-family: var(--mono);
  font-size: 26px;
  line-height: 1;
  color: var(--red);
}
.page-faq .tut-facts__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--slate);
}
.page-faq .tut-intro__media {
  margin: 0;
  border: var(--line);
  background: var(--mist);
  box-shadow: var(--hard);
}
.page-faq .tut-intro__media img,
.page-faq .tut-gestures__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
@media (min-width: 960px) {
  .page-faq .tut-intro__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 68px);
  }
}
@media (max-width: 700px) {
  .page-faq .tut-intro__media {
    box-shadow: var(--hard-xs);
  }
}

/* ---------- 章节标题组 ---------- */
.page-faq .tut-head__text {
  margin-top: 14px;
  max-width: 44em;
  color: var(--slate);
  line-height: 1.78;
}

/* ---------- 四步上手 ---------- */
.page-faq .steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: clamp(26px, 4vw, 44px);
}
.page-faq .steps__rail {
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-faq .step-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 15px 16px;
  background: var(--paper);
  color: var(--ink);
  border: var(--line);
  box-shadow: var(--hard-xs);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out, background-color 0.18s ease-out, color 0.18s ease-out;
}
.page-faq .step-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--hard-sm);
}
.page-faq .step-btn:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
}
.page-faq .step-btn[aria-selected="true"] {
  background: var(--ink);
  color: var(--on-ink-1);
  box-shadow: var(--hard-sm), inset 5px 0 0 var(--red);
  transform: translate(-2px, -2px);
}
.page-faq .step-btn__num {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--slate);
}
.page-faq .step-btn[aria-selected="true"] .step-btn__num {
  color: var(--gold);
}
.page-faq .step-btn__body {
  display: grid;
  gap: 3px;
}
.page-faq .step-btn__label {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
}
.page-faq .step-btn__meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}
.page-faq .step-btn[aria-selected="true"] .step-btn__meta {
  color: var(--on-ink-3);
}
.page-faq .steps__panels {
  border: var(--line);
  background: var(--paper);
  box-shadow: var(--hard);
  padding: clamp(20px, 3vw, 36px);
}
.page-faq .step-panel[hidden] {
  display: none;
}
.page-faq .step-panel:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 4px;
}
.page-faq .step-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 16px;
  border-bottom: var(--line);
}
.page-faq .step-panel__badge {
  padding: 4px 9px;
  background: var(--red);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.page-faq .step-panel__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-faq .step-panel__time {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}
.page-faq .step-panel__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .step-panel__list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.78;
}
.page-faq .step-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 8px;
  background: var(--red);
}
.page-faq .step-panel__done {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 22px;
  line-height: 1.72;
}
.page-faq .step-panel__done p {
  margin: 0;
}
.page-faq .step-panel__done strong {
  margin-right: 6px;
}
.page-faq .step-done {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  font-size: 14px;
  color: var(--slate);
  cursor: pointer;
  user-select: none;
}
.page-faq .step-done input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 0;
  border: var(--line);
  background: var(--paper);
  display: grid;
  place-content: center;
  cursor: pointer;
  transition: border-color 0.15s ease-out;
}
.page-faq .step-done input::after {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--red);
  transform: scale(0);
  transition: transform 0.15s ease-out;
}
.page-faq .step-done input:checked {
  border-color: var(--red);
}
.page-faq .step-done input:checked::after {
  transform: scale(1);
}
.page-faq .step-done input:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
}
@media (min-width: 940px) {
  .page-faq .steps {
    grid-template-columns: minmax(250px, 300px) minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 48px);
    align-items: start;
  }
  .page-faq .steps__rail {
    position: sticky;
    top: 96px;
  }
}
@media (max-width: 680px) {
  .page-faq .steps__panels {
    box-shadow: var(--hard-xs);
  }
  .page-faq .step-panel__time {
    margin-left: 0;
  }
}

/* ---------- 手势 ---------- */
.page-faq .tut-gestures__media {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border: var(--line);
  background: var(--mist);
  box-shadow: var(--hard);
}
.page-faq .gesture-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(22px, 3vw, 34px);
}
.page-faq .gesture-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px 22px;
  background: var(--paper);
  border: var(--line);
  box-shadow: var(--hard-xs);
  transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
}
.page-faq .gesture-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--hard-sm);
}
.page-faq .gesture-card__svg {
  width: 100%;
  height: 58px;
  color: var(--blue);
  overflow: visible;
}
.page-faq .gesture-card__svg--red {
  color: var(--red);
}
.page-faq .gesture-card__svg--gold {
  color: var(--gold);
}
.page-faq .gesture-card__svg--green {
  color: var(--green);
}
.page-faq .gesture-card__trail {
  stroke-dasharray: 240;
  stroke-dashoffset: 0;
}
.page-faq .gesture-card:hover .gesture-card__trail,
.page-faq .gesture-card:focus-within .gesture-card__trail {
  animation: faq-trail 620ms ease-out 1;
}
@keyframes faq-trail {
  from {
    stroke-dashoffset: 240;
    opacity: 0.3;
  }
  to {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}
.page-faq .gesture-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}
.page-faq .gesture-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}
.page-faq .gesture-card__use {
  margin: auto 0 0;
  padding-top: 11px;
  border-top: var(--faq-hairline);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}
.page-faq .tut-gestures__note {
  margin-top: 22px;
  padding: 16px 18px;
  border: var(--line);
  border-left: 6px solid var(--blue);
  background: var(--blue-100);
  font-size: 15px;
  line-height: 1.78;
  color: var(--navy);
}
@media (min-width: 620px) {
  .page-faq .gesture-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1080px) {
  .page-faq .gesture-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
@media (max-width: 700px) {
  .page-faq .tut-gestures__media {
    box-shadow: var(--hard-xs);
  }
}

/* ---------- 小屏适配 ---------- */
.page-faq .eyebrow--dark {
  color: var(--gold);
}
.page-faq .section--ink .section-title,
.page-faq .section--navy .section-title {
  color: var(--on-ink-1);
}
.page-faq .tut-fit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}
.page-faq .tut-fit__title {
  margin-top: 12px;
}
.page-faq .tut-fit__text {
  margin-top: 18px;
  max-width: 40em;
  color: var(--on-ink-2);
  line-height: 1.8;
}
.page-faq .tut-fit__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .tut-fit__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--on-ink-1);
}
.page-faq .tut-fit__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--gold);
}
.page-faq .tut-fit__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(242, 243, 247, 0.2);
  border: 1px solid rgba(242, 243, 247, 0.26);
}
.page-faq .tut-stat {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: 22px 18px;
  background: var(--navy);
}
.page-faq .tut-stat__num {
  font-family: var(--mono);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 500;
  line-height: 1;
  color: var(--gold);
}
.page-faq .tut-stat__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-ink-2);
}
@media (min-width: 900px) {
  .page-faq .tut-fit__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }
}

/* ---------- 常见问题 ---------- */
.page-faq .tut-faq__inner {
  max-width: var(--faq-narrow);
  margin-inline: auto;
}
.page-faq .faq-list {
  margin-top: clamp(24px, 3vw, 38px);
  border-top: var(--line);
}
.page-faq .faq-item {
  background: var(--paper);
  border-bottom: var(--line);
  border-left: 4px solid var(--gold);
  transition: border-left-color 0.18s ease-out;
}
.page-faq .faq-item[open] {
  border-left-color: var(--red);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 18px 20px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 600;
  line-height: 1.6;
  transition: background-color 0.16s ease-out;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.1;
  color: var(--red);
}
.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
}
.page-faq .faq-item__q:hover {
  background: var(--mist);
}
.page-faq .faq-item__q:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: -3px;
}
.page-faq .faq-item__qnum {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--slate);
}
.page-faq .faq-item__a {
  padding: 0 20px 22px 58px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}
.page-faq .faq-item__a ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}
.page-faq .faq-item__a li {
  padding-left: 4px;
}
.page-faq .faq-item__a a {
  color: var(--red-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a a:hover {
  color: var(--red);
}
@media (max-width: 600px) {
  .page-faq .faq-item__q {
    gap: 10px;
    padding: 16px 14px 16px 16px;
  }
  .page-faq .faq-item__a {
    padding: 0 16px 20px 22px;
  }
}

/* ---------- 收尾 ---------- */
.page-faq .tut-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
.page-faq .tut-help__title {
  margin-top: 12px;
}
.page-faq .tut-help__text {
  margin-top: 16px;
  max-width: 44em;
  color: var(--on-ink-2);
  line-height: 1.8;
}
.page-faq .tut-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
@media (min-width: 860px) {
  .page-faq .tut-help__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    gap: clamp(30px, 5vw, 64px);
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .step-btn,
  .page-faq .gesture-card,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .step-done input,
  .page-faq .step-done input::after {
    transition: none !important;
  }
  .page-faq .step-btn:hover,
  .page-faq .step-btn[aria-selected="true"],
  .page-faq .gesture-card:hover {
    transform: none;
  }
  .page-faq .gesture-card:hover .gesture-card__trail,
  .page-faq .gesture-card:focus-within .gesture-card__trail {
    animation: none;
  }
}