/* ===== 上手教程（/tutorial/）===== */
.page-faq {
  --faq-panel: var(--layer);
  --faq-panel-soft: #0A1728;
  --faq-glow: rgba(53, 240, 208, 0.09);
  padding-bottom: clamp(56px, 8vw, 120px);
}

/* --- 面包屑 --- */
.page-faq .faq-crumb {
  padding-top: clamp(20px, 3vw, 32px);
}
.page-faq .faq-crumb .breadcrumb {
  margin: 0;
}

/* --- 页首 --- */
.page-faq .faq-top {
  position: relative;
  overflow: hidden;
  margin-top: clamp(18px, 3vw, 30px);
  padding: clamp(26px, 4vw, 46px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-top::before {
  content: "";
  position: absolute;
  inset: -45% -15% auto -15%;
  height: 160%;
  pointer-events: none;
  background:
    radial-gradient(42% 58% at 16% 26%, rgba(76, 107, 179, 0.34), transparent 68%),
    radial-gradient(34% 46% at 84% 6%, rgba(53, 240, 208, 0.14), transparent 72%);
}
.page-faq .faq-top__grid {
  position: relative;
  display: grid;
  gap: 22px;
}
.page-faq .faq-top__tag {
  display: block;
  margin-bottom: 16px;
  color: rgba(234, 242, 255, 0.55);
  font-size: 12px;
  letter-spacing: 0.3em;
}
.page-faq .faq-top__title {
  margin: 0;
  max-width: 16ch;
}
.page-faq .faq-top__lede {
  margin: 0;
  max-width: 46ch;
}
.page-faq .faq-top__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-top__actions .btn {
  text-decoration: none;
}

@media (min-width: 900px) {
  .page-faq .faq-top__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    column-gap: clamp(40px, 6vw, 92px);
  }
  .page-faq .faq-top__lede {
    padding-bottom: 6px;
  }
}

/* --- 双栏骨架 --- */
.page-faq .faq-body {
  padding-top: clamp(32px, 5vw, 60px);
}
.page-faq .faq-body.rail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

@media (min-width: 1040px) {
  .page-faq .faq-body.rail-layout {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    column-gap: clamp(48px, 6vw, 88px);
  }
}

/* --- 左栏 --- */
.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  min-width: 0;
}

@media (min-width: 1040px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    scrollbar-width: thin;
    padding-right: 2px;
  }
}

.page-faq .side-index {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--faq-panel);
  padding: 18px 14px 16px;
}
.page-faq .side-index__title {
  margin: 0 0 12px;
  padding: 0 8px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.3em;
}
.page-faq .side-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}
.page-faq .side-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}
.page-faq .side-index__link:hover,
.page-faq .side-index__link:focus-visible {
  color: var(--ice);
  background: rgba(53, 240, 208, 0.06);
}
.page-faq .side-index__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--faq-glow);
}
.page-faq .side-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-rail__block {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--faq-panel), var(--faq-panel-soft));
  padding: 18px 16px;
}
.page-faq .faq-rail__label {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.28em;
}
.page-faq .faq-rail__value {
  margin: 0;
  color: var(--ice);
  font-size: 17px;
}
.page-faq .faq-rail__hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.78;
}
.page-faq .faq-rail__mail {
  margin: 0;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  word-break: break-all;
}

/* --- 右侧内容栏 --- */
.page-faq .content-col {
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 100px;
}
.page-faq .faq-section + .faq-section {
  margin-top: clamp(46px, 6vw, 82px);
}

.page-faq .faq-section .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 14px;
  row-gap: 12px;
  margin-bottom: 20px;
}
.page-faq .faq-section .section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.page-faq .faq-section .section-head .display-3 {
  margin: 0;
}
.page-faq .faq-section .section-head .display-3 + .section-rule {
  grid-column: 1 / -1;
}
.page-faq .faq-section .section-rule {
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--line) 26%, transparent 100%);
  transform-origin: left center;
}
.page-faq .faq-section__intro {
  margin: 0 0 22px;
}

/* --- 折叠问答 --- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}
.page-faq .faq-list--after {
  margin-top: 22px;
}
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--faq-panel);
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: rgba(53, 240, 208, 0.26);
}
.page-faq .faq-item[open] {
  border-color: rgba(53, 240, 208, 0.4);
  background: linear-gradient(180deg, var(--faq-panel), var(--faq-panel-soft));
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--ice);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.62;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin: 8px 2px 0 auto;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}
.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(225deg);
  margin-top: 11px;
}
.page-faq .faq-item__a {
  margin: 0 18px 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(30, 53, 80, 0.85);
}
.page-faq .faq-item__a > :first-child {
  margin-top: 0;
}
.page-faq .faq-item__a > :last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

/* --- 步骤列表 --- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 12px 0 4px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 40px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}
.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(53, 240, 208, 0.05);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

/* --- 图示 --- */
.page-faq .faq-figure {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  background: var(--faq-panel-soft);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure .media__caption {
  margin: 0;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.72;
}
.page-faq .faq-figure--portrait {
  max-width: 480px;
}

/* --- 支持清单 --- */
.page-faq .faq-kit {
  margin-top: 20px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--faq-panel), var(--faq-panel-soft));
}
.page-faq .faq-kit__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-kit__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.82;
}
.page-faq .faq-kit__list li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: 9px;
  background: var(--cyan);
  transform: rotate(45deg);
}
.page-faq .faq-kit__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.page-faq .faq-kit__mail {
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  word-break: break-all;
}
.page-faq .faq-kit__link {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 47, 0.42);
}
.page-faq .faq-kit__link:hover,
.page-faq .faq-kit__link:focus-visible {
  border-bottom-color: var(--signal);
}
.page-faq .faq-kit .copy-btn {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--ice);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}
.page-faq .faq-kit .copy-btn:hover,
.page-faq .faq-kit .copy-btn:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}
.page-faq .copy-status {
  color: var(--cyan);
  font-size: 12.5px;
}

/* --- 窄屏收口 --- */
@media (max-width: 620px) {
  .page-faq .faq-item__q {
    padding: 14px 15px;
    font-size: 15px;
  }
  .page-faq .faq-item__a {
    margin: 0 15px 16px;
  }
  .page-faq .faq-steps li {
    padding-left: 36px;
  }
  .page-faq .faq-figure--portrait {
    max-width: 100%;
  }
  .page-faq .faq-kit__row {
    gap: 10px;
  }
  .page-faq .faq-top__title {
    max-width: none;
  }
}
<<<END>>>