/* ===== 使用教程 /tutorial/ ===== */
.page-faq {
  --faq-rail-w: 236px;
  background: var(--night);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  padding: 34px 0 44px;
  background:
    radial-gradient(120% 96% at 84% 0%, rgba(28, 111, 180, 0.30), transparent 62%),
    linear-gradient(180deg, #0B1016 0%, #101A24 68%, #0B1016 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .tut-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 6px;
  background: linear-gradient(90deg, var(--lake), var(--score) 58%, var(--amber));
  clip-path: polygon(7% 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .tut-hero__inner {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-faq .tut-hero__title {
  margin: 14px 0 0;
  font-size: clamp(29px, 7vw, 34px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--snow);
  max-width: 17em;
}

.page-faq .tut-hero__lead {
  margin: 18px 0 0;
  max-width: 38em;
  color: var(--text);
}

.page-faq .tut-hero__quick {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-faq .tut-hero__quick li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .tut-hero__qnum {
  font-size: 26px;
  line-height: 1;
  color: var(--score);
  letter-spacing: -0.02em;
}

.page-faq .tut-hero__meta {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-faq .tut-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--rock);
  aspect-ratio: 3 / 4;
  max-height: 400px;
  overflow: hidden;
}

.page-faq .tut-hero__figure .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.page-faq .tut-hero__figure .media-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 7px 12px;
  background: rgba(11, 16, 22, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .tut-body {
  padding: 40px 0 64px;
  background: var(--night);
}

.page-faq .tut-body__inner {
  display: grid;
  gap: 26px;
  align-items: start;
}

/* ---------- 步骤索引栏 ---------- */
.page-faq .tut-rail {
  border: 1px solid var(--line);
  background: var(--rock);
  padding: 18px 16px;
}

.page-faq .step-rail {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  position: relative;
}

.page-faq .step-rail::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--line-strong);
}

.page-faq .step-rail__item {
  position: relative;
}

.page-faq .step-rail__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 11px 0;
  text-decoration: none;
  color: var(--text-dim);
  transition: color var(--t) var(--ease);
}

.page-faq .step-rail__num {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  background: var(--rock);
  padding-right: 8px;
  position: relative;
  z-index: 1;
  transition: color var(--t) var(--ease);
}

.page-faq .step-rail__label {
  font-size: 15px;
  line-height: 1.3;
}

.page-faq .step-rail__link:hover {
  color: var(--snow);
}

.page-faq .step-rail__link:focus-visible {
  outline: 2px solid var(--lake-lift);
  outline-offset: 2px;
}

.page-faq:has(#tut-s1[open]) .step-rail__item[data-step="1"] .step-rail__link,
.page-faq:has(#tut-s2[open]) .step-rail__item[data-step="2"] .step-rail__link,
.page-faq:has(#tut-s3[open]) .step-rail__item[data-step="3"] .step-rail__link,
.page-faq:has(#tut-s4[open]) .step-rail__item[data-step="4"] .step-rail__link,
.page-faq:has(#tut-s5[open]) .step-rail__item[data-step="5"] .step-rail__link,
.page-faq:has(#tut-s6[open]) .step-rail__item[data-step="6"] .step-rail__link {
  color: var(--snow);
}

.page-faq:has(#tut-s1[open]) .step-rail__item[data-step="1"] .step-rail__num,
.page-faq:has(#tut-s2[open]) .step-rail__item[data-step="2"] .step-rail__num,
.page-faq:has(#tut-s3[open]) .step-rail__item[data-step="3"] .step-rail__num,
.page-faq:has(#tut-s4[open]) .step-rail__item[data-step="4"] .step-rail__num,
.page-faq:has(#tut-s5[open]) .step-rail__item[data-step="5"] .step-rail__num,
.page-faq:has(#tut-s6[open]) .step-rail__item[data-step="6"] .step-rail__num {
  color: var(--score);
}

.page-faq .tut-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--text-dim);
}

/* ---------- 折叠面板列表 ---------- */
.page-faq .tut-panels {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .tut-item {
  border: 1px solid var(--line);
  border-left: 3px solid rgba(198, 208, 216, 0.22);
  background: linear-gradient(180deg, var(--rock) 0%, #151D26 100%);
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .tut-item[open] {
  border-left-color: var(--score);
  background: linear-gradient(180deg, #1B242E 0%, #141C25 100%);
  border-color: var(--line-strong);
  border-left-color: var(--score);
}

.page-faq .tut-item__head {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 12px;
  padding: 17px 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .tut-item__head::marker {
  content: "";
}

.page-faq .tut-item__head:focus-visible {
  outline: 2px solid var(--lake-lift);
  outline-offset: -2px;
}

.page-faq .tut-item__num {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  transition: color var(--t) var(--ease);
}

.page-faq .tut-item[open] .tut-item__num {
  color: var(--score);
}

.page-faq .tut-item__title {
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-faq .tut-item__sign {
  position: relative;
  width: 16px;
  height: 16px;
  justify-self: end;
}

.page-faq .tut-item__sign::before,
.page-faq .tut-item__sign::after {
  content: "";
  position: absolute;
  background: var(--text-dim);
  transition: transform var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .tut-item__sign::before {
  left: 0;
  top: 7.5px;
  width: 16px;
  height: 1px;
}

.page-faq .tut-item__sign::after {
  top: 0;
  left: 7.5px;
  width: 1px;
  height: 16px;
}

.page-faq .tut-item[open] .tut-item__sign::before {
  background: var(--score);
}

.page-faq .tut-item[open] .tut-item__sign::after {
  transform: scaleY(0);
}

.page-faq .tut-item__body {
  padding: 16px 15px 20px;
  border-top: 1px solid var(--line);
  animation: faq-panel-in 0.22s var(--ease);
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 面板内部通用 ---------- */
.page-faq .tut-item__body .prose {
  margin: 0 0 16px;
  max-width: 36em;
  color: var(--text);
}

.page-faq .tut-item__body .prose:last-child {
  margin-bottom: 0;
}

.page-faq .tut-item__more {
  margin: 16px 0 0;
  color: var(--text-dim);
}

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

.page-faq .tut-link:hover {
  color: var(--snow);
}

.page-faq .field {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  background: rgba(78, 107, 82, 0.38);
  border: 1px solid rgba(78, 107, 82, 0.75);
  color: var(--snow);
  padding: 2px 7px;
}

/* 编号步骤 */
.page-faq .step-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .step-list__item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-faq .step-list__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .step-list__num {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lake-lift);
  padding-top: 3px;
}

.page-faq .step-list__text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .step-list__text strong {
  color: var(--snow);
  font-weight: 600;
}

/* 提示块 */
.page-faq .tut-note {
  margin-top: 18px;
  padding: 13px 15px;
  border-left: 3px solid var(--amber);
  background: rgba(242, 176, 30, 0.08);
}

.page-faq .tut-note--amber {
  border-left-color: var(--amber);
  background: rgba(242, 176, 30, 0.08);
}

.page-faq .tut-note--moss {
  border-left-color: var(--moss);
  background: rgba(78, 107, 82, 0.22);
}

.page-faq .tut-note--clay {
  border-left-color: var(--clay);
  background: rgba(167, 91, 62, 0.14);
}

.page-faq .tut-note__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .tut-note--moss .tut-note__title {
  color: #A8C7AC;
}

.page-faq .tut-note--clay .tut-note__title {
  color: #E0A184;
}

.page-faq .tut-note__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .tut-note__list li {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
}

.page-faq .tut-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

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

/* 三条信息带 */
.page-faq .note-strip {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 16px;
}

.page-faq .note-strip--alert {
  border-left: 3px solid var(--red);
}

.page-faq .note-strip__cell {
  background: rgba(11, 16, 22, 0.72);
  padding: 12px 14px;
}

.page-faq .note-strip__key {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 5px;
}

.page-faq .note-strip__val {
  display: block;
  font-size: 15px;
  line-height: 1.5;
  color: var(--snow);
}

/* 表格 */
.page-faq .tut-field-table {
  margin-top: 18px;
}

.page-faq .tut-cell-note {
  display: inline-block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* 对照章节：图文并排 */
.page-faq .tut-split {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

.page-faq .tut-split__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--rock);
  overflow: hidden;
}

.page-faq .tut-split__figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .tut-split__figure .media-frame__cap {
  display: block;
  padding: 7px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* 三种查法 */
.page-faq .query-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 4px;
}

.page-faq .query-grid__cell {
  background: rgba(11, 16, 22, 0.7);
  padding: 15px;
  position: relative;
}

.page-faq .query-grid__cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 3px;
  background: var(--lake);
}

.page-faq .query-grid__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lake-lift);
}

.page-faq .query-grid__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.68;
  color: var(--text);
}

/* 结尾出口 */
.page-faq .tut-exit {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .tut-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--line);
  }

  .page-faq .tut-hero__quick li {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 14px 16px 14px 0;
    border-bottom: 0;
  }

  .page-faq .tut-hero__quick li + li {
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

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

  .page-faq .note-strip--alert {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .tut-item__head {
    padding: 19px 20px;
    grid-template-columns: 40px minmax(0, 1fr) 20px;
    gap: 14px;
  }

  .page-faq .tut-item__title {
    font-size: 21px;
  }

  .page-faq .tut-item__body {
    padding: 18px 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .tut-hero {
    padding: 56px 0 68px;
  }

  .page-faq .tut-hero__inner {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 52px;
  }

  .page-faq .tut-hero__title {
    font-size: clamp(40px, 3.6vw, 54px);
  }

  .page-faq .tut-hero__figure {
    max-height: none;
  }

  .page-faq .tut-split {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }
}

@media (min-width: 1024px) {
  .page-faq .tut-body {
    padding: 56px 0 84px;
  }

  .page-faq .tut-body__inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .tut-rail {
    position: sticky;
    top: 92px;
  }

  .page-faq .tut-item__title {
    font-size: 23px;
  }

  .page-faq .tut-item__body .prose {
    max-width: 36em;
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-item__body {
    animation: none;
  }

  .page-faq .step-rail__link,
  .page-faq .step-rail__num,
  .page-faq .tut-item__num,
  .page-faq .tut-item__sign::before,
  .page-faq .tut-item__sign::after {
    transition: none;
  }
}
<<<END>>>