.page-faq {
  --tut-line: rgba(232, 238, 247, 0.10);
  --tut-line-strong: rgba(232, 238, 247, 0.26);
  --tut-body-text: rgba(232, 238, 247, 0.74);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  padding: clamp(1.4rem, 4vw, 2.8rem) 0 clamp(2rem, 5vw, 3.2rem);
  border-bottom: 1px solid var(--tut-line);
  background:
    radial-gradient(115% 130% at 90% 2%, rgba(56, 242, 214, 0.11), transparent 58%),
    radial-gradient(80% 110% at 2% 96%, rgba(255, 122, 61, 0.07), transparent 62%),
    linear-gradient(180deg, rgba(14, 26, 43, 0.85), rgba(7, 11, 20, 0));
}

.page-faq .tut-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-faq .tut-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 5.4vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.012em;
  margin: 0.6rem 0 0;
  color: var(--paper);
  max-width: 18ch;
}

.page-faq .tut-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--tut-body-text);
}

.page-faq .tut-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-faq .tut-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem clamp(1.3rem, 4vw, 2.6rem);
  margin: 2rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--tut-line);
}

.page-faq .tut-fact {
  min-width: 96px;
}

.page-faq .tut-fact dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq .tut-fact dd {
  margin: 0.3rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1.15;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .tut-hero__figure {
  margin: 0;
  padding: 0.55rem;
  background: var(--ink-800);
  border: 1px solid var(--tut-line-strong);
}

.page-faq .tut-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 目录 + 主区布局 ---------- */
.page-faq .tut-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-top: clamp(1.8rem, 5vw, 3.2rem);
}

.page-faq .tut-toc__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq .tut-toc__list {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .tut-toc__link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.5rem 0.72rem;
  border: 1px solid var(--tut-line);
  color: rgba(232, 238, 247, 0.72);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .tut-toc__link:hover,
.page-faq .tut-toc__link:focus-visible {
  color: var(--cyan);
  border-color: rgba(56, 242, 214, 0.45);
  background: var(--cyan-soft);
}

.page-faq .tut-toc__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--mute);
}

.page-faq .tut-toc__link:hover .tut-toc__idx {
  color: var(--orange);
}

/* ---------- 章节 ---------- */
.page-faq .tut-section {
  padding-bottom: clamp(2.2rem, 6vw, 3.8rem);
  margin-bottom: clamp(2.2rem, 6vw, 3.8rem);
  border-bottom: 1px solid var(--tut-line);
  scroll-margin-top: calc(var(--rail-h) + 1.5rem);
}

.page-faq .tut-section:last-of-type {
  border-bottom: 0;
  margin-bottom: 0;
}

.page-faq .tut-section__head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.page-faq .tut-step-idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .tut-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.4vw, 2.3rem);
  line-height: 1.16;
  letter-spacing: -0.005em;
  margin: 0;
  color: var(--paper);
}

.page-faq .tut-section__lede {
  max-width: 62ch;
  margin: 0.5rem 0 1.6rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--tut-body-text);
}

/* ---------- 筛选按钮 ---------- */
.page-faq .tut-filter {
  margin-bottom: 1.2rem;
}

/* ---------- 路径卡片 ---------- */
.page-faq .tut-paths {
  display: grid;
  gap: 1rem;
}

.page-faq .tut-path {
  position: relative;
  padding: 1.25rem 1.15rem 1.05rem;
  background: linear-gradient(180deg, rgba(14, 26, 43, 0.9), rgba(14, 26, 43, 0.5));
  border: 1px solid var(--tut-line);
  border-left: 2px solid var(--cyan);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .tut-path[hidden] {
  display: none;
}

.page-faq .tut-path:hover {
  border-color: rgba(56, 242, 214, 0.42);
  border-left-color: var(--cyan);
}

.page-faq .tut-path h3 {
  margin: 0.7rem 0 0.45rem;
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .tut-path p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--tut-body-text);
}

.page-faq .tut-path a {
  display: inline-block;
  margin-top: 0.9rem;
  font-size: 0.85rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 214, 0.34);
}

.page-faq .tut-path a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 步骤列表 ---------- */
.page-faq .tut-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .tut-step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 0.8rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--tut-line);
}

.page-faq .tut-step:last-child {
  border-bottom: 1px solid var(--tut-line);
}

.page-faq .tut-step__num {
  padding-top: 0.18rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .tut-step__title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .tut-step__body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--tut-body-text);
}

/* ---------- 提示块 ---------- */
.page-faq .tut-note {
  margin-top: 1.4rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 181, 71, 0.3);
  border-left: 3px solid var(--amber);
  background: var(--amber-soft);
  font-size: 0.89rem;
  line-height: 1.78;
  color: rgba(232, 238, 247, 0.84);
}

.page-faq .tut-note strong {
  color: var(--amber);
  font-weight: 600;
}

/* ---------- 面板视图 ---------- */
.page-faq .panel-views {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1.6rem;
}

.page-faq .panel-view {
  padding: 0.9rem 0.95rem;
  background: rgba(26, 42, 63, 0.42);
  border: 1px solid var(--tut-line);
}

.page-faq .panel-view__name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
}

.page-faq .panel-view__desc {
  margin: 0.35rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 中段图 ---------- */
.page-faq .tut-figure {
  margin: 1.7rem 0 0;
  padding: 0.6rem;
  background: var(--ink-800);
  border: 1px solid var(--tut-line-strong);
}

.page-faq .tut-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .tut-figure figcaption {
  margin-top: 0.6rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--tut-line);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--mute);
}

/* ---------- 阵容时间条 ---------- */
.page-faq .clock-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.4rem;
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(56, 242, 214, 0.26);
  background: var(--cyan-soft);
}

.page-faq .clock-strip__num {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .clock-strip__text {
  flex: 1 1 210px;
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.75;
  color: rgba(232, 238, 247, 0.82);
}

.page-faq .lineup-grid {
  display: grid;
  gap: 1px;
  margin-top: 1.2rem;
  background: var(--tut-line);
  border: 1px solid var(--tut-line);
}

.page-faq .lineup-cell {
  padding: 1.1rem 1.05rem 1.2rem;
  background: var(--ink-900);
}

.page-faq .lineup-cell__k {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .lineup-cell__t {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .lineup-cell p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--tut-body-text);
}

/* ---------- 版本变更 ---------- */
.page-faq .change-list {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
}

.page-faq .change-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--tut-line);
  font-size: 0.91rem;
  line-height: 1.78;
  color: var(--tut-body-text);
}

.page-faq .change-item:last-child {
  border-bottom: 1px solid var(--tut-line);
}

.page-faq .change-tag {
  align-self: start;
  padding: 0.18rem 0.5rem;
  border: 1px solid rgba(255, 181, 71, 0.4);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  margin-top: 1.7rem;
  border-top: 1px solid var(--tut-line);
}

.page-faq .accordion__item {
  border-bottom: 1px solid var(--tut-line);
}

.page-faq .accordion__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0.15rem;
  background: none;
  border: 0;
  text-align: left;
  font-family: inherit;
  font-size: 0.97rem;
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  transition: color 0.2s ease;
}

.page-faq .accordion__trigger:hover {
  color: var(--cyan);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .acc-sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-faq .acc-sign::before,
.page-faq .acc-sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--orange);
  transition: transform 0.22s ease;
}

.page-faq .acc-sign::after {
  transform: rotate(90deg);
}

.page-faq .accordion__trigger[aria-expanded="true"] .acc-sign::after {
  transform: rotate(0deg);
}

.page-faq .accordion__panel {
  padding: 0 1.6rem 1.05rem 0.15rem;
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--tut-body-text);
}

.page-faq .accordion__panel[hidden] {
  display: none;
}

.page-faq .accordion__panel p {
  margin: 0 0 0.6rem;
}

.page-faq .accordion__panel p:last-child {
  margin-bottom: 0;
}

.page-faq .accordion__panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 214, 0.34);
}

.page-faq .accordion__panel a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 尾部 ---------- */
.page-faq .tut-contact {
  margin: 1.5rem 0 0;
  font-size: 0.89rem;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .tut-contact a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 214, 0.3);
}

.page-faq .tut-contact a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .tut-top {
  margin: 2rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--tut-line);
}

.page-faq .tut-top a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mute);
  text-decoration: none;
}

.page-faq .tut-top a::before {
  content: "↑";
  margin-right: 0.45rem;
  color: var(--orange);
}

.page-faq .tut-top a:hover {
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .panel-views {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .lineup-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .tut-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .tut-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .panel-views {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .tut-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .tut-toc {
    position: sticky;
    top: calc(var(--rail-h) + 1.5rem);
    padding-left: 1.1rem;
    border-left: 1px solid var(--tut-line);
  }

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

  .page-faq .tut-toc__link {
    padding: 0.62rem 0;
    border: 0;
    white-space: normal;
    line-height: 1.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-path,
  .page-faq .tut-toc__link,
  .page-faq .accordion__trigger,
  .page-faq .acc-sign::before,
  .page-faq .acc-sign::after {
    transition: none;
  }
}