.page-faq {
  --tut-ink-soft: #4A3F33;
  --tut-line-soft: rgba(22, 17, 12, 0.18);
  --tut-gap: clamp(1rem, 2.4vw, 1.75rem);
  background: var(--ink-800);
  color: var(--fg);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  padding-block: clamp(1.75rem, 4vw, 2.75rem) clamp(2.5rem, 6vw, 4.25rem);
  background:
    radial-gradient(circle at 84% 8%, rgba(23, 179, 163, 0.26), transparent 46%),
    radial-gradient(circle at 8% 92%, rgba(91, 240, 224, 0.1), transparent 42%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 70%);
  border-bottom: 3px solid var(--brown);
}

.page-faq .tut-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-faq .tut-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0.55rem 0 0;
  color: var(--ivory);
  text-wrap: balance;
}

.page-faq .tut-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 48ch;
  font-size: clamp(0.98rem, 1.15vw, 1.1rem);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .tut-hero__aside {
  background: var(--ink-700);
  border: 2px solid var(--brown);
  box-shadow: var(--shadow-hard);
  padding: 1.1rem 1.15rem 1.25rem;
}

.page-faq .tut-hero__aside-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}

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

.page-faq .tut-hero__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  align-items: baseline;
  justify-content: space-between;
  padding: 0.68rem 0;
  border-bottom: 1px dashed var(--hair);
  font-size: 0.92rem;
}

.page-faq .tut-hero__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .tut-hero__q {
  color: var(--mist);
}

.page-faq .tut-hero__a {
  font-family: var(--font-num);
  font-size: 1.02rem;
  letter-spacing: 0.03em;
  color: var(--amber);
}

/* ---------- 区块骨架 ---------- */
.page-faq .tut-section {
  padding-block: clamp(2.4rem, 5.5vw, 4.5rem);
  border-bottom: 1px solid var(--hair);
}

.page-faq .tut-section--paper {
  background: var(--paper);
  color: var(--brown);
  border-top: 3px solid var(--brown);
  border-bottom: 3px solid var(--brown);
}

.page-faq .tut-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 0.45rem 0 0;
  text-wrap: balance;
}

.page-faq .tut-lede {
  margin: 0.85rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .tut-section--paper .tut-lede,
.page-faq .tut-section--paper .tut-foot-note {
  color: var(--tut-ink-soft);
}

.page-faq .tut-section--paper .eyebrow {
  color: var(--teal-deep);
}

.page-faq .tut-foot-note {
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .tut-inline {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .tut-section--paper .tut-inline {
  color: var(--teal-deep);
}

.page-faq .tut-inline:hover,
.page-faq .tut-inline:focus-visible {
  color: var(--cyan);
}

.page-faq .tut-section--paper .tut-inline:hover,
.page-faq .tut-section--paper .tut-inline:focus-visible {
  color: var(--orange);
}

/* ---------- 三步条 ---------- */
.page-faq .steps {
  list-style: none;
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--tut-gap);
}

.page-faq .step {
  position: relative;
  background: linear-gradient(180deg, rgba(23, 179, 163, 0.12), rgba(23, 179, 163, 0) 62%);
  border: 2px solid var(--hair);
  border-top: 3px solid var(--teal);
  padding: 1.15rem 1.1rem 1.35rem;
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--teal);
}

.page-faq .step__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-serif);
  font-size: 1.12rem;
  line-height: 1.42;
  color: var(--ivory);
}

.page-faq .step__text {
  margin: 0.55rem 0 0;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .tut-shot {
  margin: clamp(1.6rem, 3.5vw, 2.5rem) 0 0;
  border: 2px solid var(--hair);
  background: var(--ink-700);
  padding: 0.75rem;
}

.page-faq .tut-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--hair);
}

.page-faq .tut-shot figcaption {
  margin-top: 0.7rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--mist);
  padding-left: 0.75rem;
  border-left: 2px solid var(--teal);
}

.page-faq .tut-section--paper .tut-shot {
  border-color: var(--brown);
  background: var(--ivory);
  box-shadow: var(--shadow-hard);
}

.page-faq .tut-section--paper .tut-shot img {
  border-color: var(--tut-line-soft);
}

.page-faq .tut-section--paper .tut-shot figcaption {
  color: var(--tut-ink-soft);
  border-left-color: var(--teal-deep);
}

/* ---------- 菜单三卡 ---------- */
.page-faq .tut-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--tut-gap);
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .tut-card {
  background: var(--ivory);
  border: 2px solid var(--brown);
  box-shadow: var(--shadow-hard);
  padding: 1.15rem 1.15rem 1.35rem;
}

.page-faq .tut-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.12rem;
  line-height: 1.42;
  color: var(--brown);
}

.page-faq .tut-card__text {
  margin: 0.6rem 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--tut-ink-soft);
}

.page-faq .tut-card__text + .tut-card__text {
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--tut-line-soft);
}

.page-faq .menu-svg {
  display: block;
  width: 100%;
  height: auto;
  margin: 0.9rem 0 0.85rem;
  color: var(--teal-deep);
}

/* ---------- 筛选 ---------- */
.page-faq .filter-demo {
  margin-top: clamp(1.4rem, 3vw, 2rem);
  border: 2px solid var(--hair);
  border-left: 3px solid var(--amber);
  background: var(--ink-700);
  padding: 1.1rem 1.1rem 1.2rem;
}

.page-faq .filter-demo__label {
  margin: 0 0 0.7rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .chip {
  border: 2px solid var(--hair);
  padding: 0.42rem 0.85rem;
  font-size: 0.88rem;
  line-height: 1.3;
  color: var(--mist);
  background: transparent;
  transition: border-color 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.page-faq .chip--on {
  border-color: var(--cyan);
  color: var(--ink-900);
  background: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .chip:hover {
  border-color: var(--teal);
  color: var(--ivory);
}

.page-faq .chip--on:hover {
  color: var(--ink-900);
}

.page-faq .filter-demo__note {
  margin: 0.85rem 0 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .tut-stats {
  list-style: none;
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 2px solid var(--hair);
}

.page-faq .tut-stat {
  background: var(--ink-800);
  padding: 1rem 0.95rem 1.05rem;
}

.page-faq .tut-stat__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-faq .tut-stat__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--mist);
}

/* ---------- 梯队 ---------- */
.page-faq .tiers {
  list-style: none;
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
}

.page-faq .tier {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.35rem 1.5rem;
  background: var(--ivory);
  border: 2px solid var(--brown);
  border-left-width: 8px;
  padding: 1rem 1.1rem 1.15rem;
  box-shadow: var(--shadow-hard);
}

.page-faq .tier--top {
  border-left-color: var(--amber);
}

.page-faq .tier--good {
  border-left-color: var(--teal);
}

.page-faq .tier--ok {
  border-left-color: var(--teal-deep);
}

.page-faq .tier--watch {
  border-left-color: var(--orange);
}

.page-faq .tier__name {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.3;
  color: var(--brown);
}

.page-faq .tier__who {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
}

.page-faq .tier__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--tut-ink-soft);
}

/* ---------- 刷新说明 ---------- */
.page-faq .pulse {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--cyan);
  vertical-align: 0.08em;
  box-shadow: 0 0 0 0 rgba(91, 240, 224, 0.7);
  animation: tutPulse 2s ease-out infinite;
}

@keyframes tutPulse {
  0% { box-shadow: 0 0 0 0 rgba(91, 240, 224, 0.65); }
  70% { box-shadow: 0 0 0 14px rgba(91, 240, 224, 0); }
  100% { box-shadow: 0 0 0 0 rgba(91, 240, 224, 0); }
}

.page-faq .refresh-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--tut-gap);
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .refresh-card {
  position: relative;
  background: var(--ink-700);
  border: 2px solid var(--hair);
  padding: 1.15rem 1.1rem 1.3rem;
}

.page-faq .refresh-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--teal);
}

.page-faq .refresh-card--warn::before {
  background: var(--orange);
}

.page-faq .refresh-card__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--ivory);
}

.page-faq .refresh-card__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .faq-nav {
  border: 2px dashed var(--hair);
  padding: 1rem 1rem 1.15rem;
}

.page-faq .faq-nav__title {
  margin: 0 0 0.7rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}

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

.page-faq .faq-nav__link {
  display: block;
  padding: 0.42rem 0 0.42rem 0.8rem;
  border-left: 2px solid var(--hair);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.22s ease, border-color 0.22s ease, padding-left 0.22s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  padding-left: 1.1rem;
  outline: none;
}

.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-item {
  background: var(--ink-700);
  border: 2px solid var(--hair);
  border-left: 3px solid var(--teal);
  margin-bottom: 0.7rem;
}

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

.page-faq .faq-item[open] {
  border-left-color: var(--amber);
}

.page-faq .faq-item > summary {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  justify-content: space-between;
  cursor: pointer;
  padding: 1rem 1.05rem;
  font-family: var(--font-serif);
  font-size: 1.04rem;
  line-height: 1.5;
  color: var(--ivory);
  list-style: none;
  min-height: 44px;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--cyan);
  transition: color 0.22s ease;
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--amber);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--cyan);
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__body {
  margin: 0 1.05rem 1.1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--hair);
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body p + p {
  margin-top: 0.6rem;
}

.page-faq .faq-item[open] .faq-item__body {
  animation: tutFaqIn 0.28s ease both;
}

@keyframes tutFaqIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 联系 ---------- */
.page-faq .tut-section--help {
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border-bottom: 0;
}

.page-faq .help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--tut-gap);
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .help-card {
  background: var(--paper);
  color: var(--brown);
  border: 2px solid var(--brown);
  box-shadow: var(--shadow-hard);
  padding: 1.1rem 1.1rem 1.25rem;
}

.page-faq .help-card--quiet {
  background: var(--ink-700);
  color: var(--ivory);
  border-color: var(--hair);
  box-shadow: none;
}

.page-faq .help-card__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-deep);
}

.page-faq .help-card--quiet .help-card__label {
  color: var(--amber);
}

.page-faq .help-card__value {
  margin: 0.55rem 0 0;
  font-family: var(--font-num);
  font-size: clamp(1.05rem, 2.4vw, 1.42rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--brown);
  word-break: break-all;
}

.page-faq .help-card__hint {
  margin: 0.55rem 0 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--tut-ink-soft);
}

.page-faq .help-card__list {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
}

.page-faq .help-card__list li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .help-card__list li + li {
  margin-top: 0.35rem;
}

.page-faq .help-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 7px;
  background: var(--teal);
}

/* ---------- 桌面断点 ---------- */
@media (min-width: 860px) {
  .page-faq .tut-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }

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

  .page-faq .step + .step::before {
    content: "";
    position: absolute;
    left: calc(var(--tut-gap) * -1);
    top: 3.1rem;
    width: var(--tut-gap);
    height: 2px;
    background: var(--teal);
  }

  .page-faq .tut-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 0.92fr);
  }

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

  .page-faq .tiers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

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

  .page-faq .help-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.15fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 258px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 6.5rem;
  }
}

@media (max-width: 520px) {
  .page-faq .tut-stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .tut-shot {
    padding: 0.5rem;
  }

  .page-faq .tut-shot img {
    aspect-ratio: 4 / 3;
  }

  .page-faq .steps,
  .page-faq .tut-split,
  .page-faq .tiers,
  .page-faq .help-grid {
    gap: 0.85rem;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .pulse {
    animation: none;
    box-shadow: none;
  }

  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }

  .page-faq .faq-item > summary,
  .page-faq .faq-nav__link,
  .page-faq .chip,
  .page-faq .tut-inline {
    transition: none;
  }

  .page-faq .chip--on,
  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    transform: none;
  }
}
<<<END>>>