.page-faq {
  --faq-sticky-top: 84px;
  --faq-card-gap: clamp(0.7rem, 2vw, 1rem);
  background: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.75rem, 8vw, 5.5rem) 0 clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .tut-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: min(540px, 78vw);
  height: min(540px, 78vw);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 36%, rgba(255, 210, 63, 0.58), rgba(255, 155, 87, 0.2) 55%, transparent 74%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .tut-hero::after {
  content: "";
  position: absolute;
  left: -16%;
  top: 34%;
  width: min(430px, 66vw);
  height: min(430px, 66vw);
  border-radius: 50%;
  background: radial-gradient(circle at 58% 42%, rgba(127, 209, 232, 0.42), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .tut-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .tut-hero-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .tut-h1 {
  margin: 0;
  font-size: clamp(2rem, 7.2vw, 3.35rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--rind);
  text-shadow: 4px 4px 0 rgba(244, 54, 76, 0.22);
  overflow-wrap: anywhere;
}

.page-faq .tut-lede {
  max-width: 36em;
  margin: 1.15rem 0 0;
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--rind-2);
}

.page-faq .tut-hero-copy .cta-row {
  margin-top: 1.6rem;
}

.page-faq .tut-hero-figure {
  margin: 0;
}

.page-faq .tut-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--faq-card-gap);
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-stat {
  padding: 0.85rem 1rem 0.95rem;
  border: 3px solid var(--rind);
  border-radius: var(--radius-sm);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.page-faq .tut-stat-num {
  display: block;
  margin-bottom: 0.35rem;
  padding-bottom: 0.25rem;
  border-bottom: 3px solid var(--lemon);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--rind);
}

.page-faq .tut-stat-label {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-faq .tut-body {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.page-faq .tut-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .tut-main {
  min-width: 0;
}

.page-faq .tut-block {
  scroll-margin-top: 96px;
}

.page-faq .tut-block + .tut-block {
  margin-top: clamp(3rem, 7vw, 5rem);
}

/* ---------- 上手流程 ---------- */
.page-faq .flow-arrow {
  margin: 1.4rem 0 0.4rem;
}

.page-faq .flow-arrow svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .flow {
  display: grid;
  gap: var(--faq-card-gap);
  margin: 0.6rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .flow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem 0.95rem;
  padding: 1rem 1.05rem 1.05rem;
  border: 3px solid var(--rind);
  border-radius: var(--radius);
  background: var(--cream);
  box-shadow: var(--shadow-soft);
}

.page-faq .flow-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 3px solid var(--rind);
  border-radius: 50%;
  background: var(--lemon);
  box-shadow: 3px 3px 0 var(--rind);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
  color: var(--rind);
}

.page-faq .flow-body {
  min-width: 0;
}

.page-faq .flow-title {
  margin: 0.3rem 0 0.35rem;
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--rind);
}

.page-faq .flow-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--rind-2);
}

.page-faq .flow-check {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.45rem;
  margin: 0.6rem 0 0;
  font-size: 0.875rem;
  line-height: 1.62;
  color: var(--muted);
}

/* ---------- 档位切换 ---------- */
.page-faq .tier-picker {
  position: relative;
  margin-top: 1.6rem;
}

.page-faq .tier-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .tier-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.page-faq .tier-tab {
  padding: 0.5rem 1.1rem;
  border: 3px solid var(--rind);
  border-radius: 999px;
  background: var(--cream);
  box-shadow: 3px 3px 0 var(--rind);
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--rind);
  cursor: pointer;
  user-select: none;
  transition: transform 0.12s var(--ease-out), background-color 0.12s var(--ease-out);
}

.page-faq #tier-entry:checked ~ .tier-tabs .tier-tab[for="tier-entry"] {
  background: var(--watermelon);
  color: #fff;
}

.page-faq #tier-main:checked ~ .tier-tabs .tier-tab[for="tier-main"] {
  background: var(--lemon);
  color: var(--rind);
}

.page-faq #tier-adv:checked ~ .tier-tabs .tier-tab[for="tier-adv"] {
  background: var(--lime);
  color: var(--rind);
}

.page-faq #tier-entry:focus-visible ~ .tier-tabs .tier-tab[for="tier-entry"],
.page-faq #tier-main:focus-visible ~ .tier-tabs .tier-tab[for="tier-main"],
.page-faq #tier-adv:focus-visible ~ .tier-tabs .tier-tab[for="tier-adv"] {
  outline: 3px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .tier-panels .tier-panel {
  display: none;
}

.page-faq #tier-entry:checked ~ .tier-panels .tier-panel[data-tier="entry"],
.page-faq #tier-main:checked ~ .tier-panels .tier-panel[data-tier="main"],
.page-faq #tier-adv:checked ~ .tier-panels .tier-panel[data-tier="adv"] {
  display: block;
}

.page-faq .tier-panel {
  padding: 1.2rem 1.15rem 1.3rem;
  border: 3px solid var(--rind);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.page-faq .tier-badge {
  display: inline-block;
  margin: 0 0 0.7rem;
  padding: 0.2rem 0.6rem;
  border: 2px solid var(--rind);
  border-radius: 6px;
  background: var(--lemon);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--rind);
}

.page-faq .tier-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--rind);
}

.page-faq .tier-text {
  margin: 0 0 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--rind-2);
}

.page-faq .tier-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .tut-tier-figure {
  margin: 1.75rem 0 0;
}

/* ---------- 调校清单 ---------- */
.page-faq .tune-list {
  display: grid;
  gap: 0.7rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tune-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
}

.page-faq .tune-check {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 0.95rem 0 0;
  border: 3px solid var(--rind);
  border-radius: 5px;
  background: var(--cream);
  cursor: pointer;
  position: relative;
  transition: background-color 0.12s var(--ease-out);
}

.page-faq .tune-check:checked {
  background: var(--lime);
}

.page-faq .tune-check:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 6px;
  height: 11px;
  border: solid var(--rind);
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}

.page-faq .tune-check:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 2px;
}

.page-faq .tune-label {
  display: block;
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.8rem 0.95rem 0.9rem;
  border: 3px solid var(--rind);
  border-radius: var(--radius-sm);
  background: var(--cream);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: background-color 0.14s var(--ease-out), border-color 0.14s var(--ease-out);
}

.page-faq .tune-check:checked + .tune-label {
  border-color: var(--lime);
  background: rgba(168, 224, 95, 0.16);
}

.page-faq .tune-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.page-faq .tune-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--rind);
}

.page-faq .tune-done {
  display: none;
  padding: 0.05rem 0.5rem;
  border: 2px solid var(--rind);
  border-radius: 999px;
  background: var(--lime);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--rind);
}

.page-faq .tune-check:checked + .tune-label .tune-done {
  display: inline-block;
}

.page-faq .tune-value {
  display: block;
  margin-bottom: 0.45rem;
  padding: 0.25rem 0.55rem;
  border-left: 4px solid var(--lemon);
  background: var(--paper);
  font-size: 0.875rem;
  color: var(--rind);
  overflow-wrap: anywhere;
}

.page-faq .tune-why {
  display: block;
  font-size: 0.875rem;
  line-height: 1.66;
  color: var(--muted);
}

.page-faq .tune-warn {
  margin: 1.35rem 0 0;
  padding: 0.85rem 1rem;
  border: 3px solid var(--rind);
  border-left-width: 10px;
  border-left-color: var(--peach);
  border-radius: var(--radius-sm);
  background: rgba(255, 155, 87, 0.15);
  box-shadow: var(--shadow-soft);
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--rind-2);
}

/* ---------- 排查顺序 ---------- */
.page-faq .trouble-grid {
  display: grid;
  gap: var(--faq-card-gap);
  margin-top: 1.6rem;
}

.page-faq .trouble-card {
  padding: 1.05rem 1.05rem 1.2rem;
  border: 3px solid var(--rind);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.page-faq .trouble-card::before {
  content: "";
  display: block;
  height: 10px;
  margin-bottom: 0.85rem;
  border: 2px solid var(--rind);
  border-radius: 4px;
  background: var(--watermelon);
}

.page-faq .trouble-card:nth-child(2)::before {
  background: var(--peach);
}

.page-faq .trouble-card:nth-child(3)::before {
  background: var(--ice);
}

.page-faq .trouble-title {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--rind);
}

.page-faq .trouble-list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-tr;
}

.page-faq .trouble-list li {
  position: relative;
  padding-left: 2.1rem;
  font-size: 0.9rem;
  line-height: 1.66;
  color: var(--rind-2);
}

.page-faq .trouble-list li::before {
  counter-increment: faq-tr;
  content: counter(faq-tr, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.5rem;
  border: 2px solid var(--rind);
  border-radius: 5px;
  background: var(--lemon);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  color: var(--rind);
}

/* ---------- 收尾 ---------- */
.page-faq .tut-cta {
  margin-top: clamp(3rem, 7vw, 4.5rem);
}

.page-faq .tut-cta-box {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 3px solid var(--rind);
  border-radius: var(--radius);
  background: var(--rind);
  box-shadow: var(--shadow-hard);
}

.page-faq .tut-cta-box::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: min(280px, 60vw);
  height: min(280px, 60vw);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 38%, rgba(255, 210, 63, 0.34), rgba(244, 54, 76, 0.18) 58%, transparent 76%);
  pointer-events: none;
}

.page-faq .tut-cta-box > * {
  position: relative;
  z-index: 1;
}

.page-faq .tut-cta-box .eyebrow {
  color: var(--lemon);
}

.page-faq .tut-cta-box h2 {
  margin: 0.35rem 0 0.75rem;
  font-size: clamp(1.45rem, 4.4vw, 2.1rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--cream);
}

.page-faq .tut-cta-box p {
  max-width: 40em;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255, 248, 236, 0.84);
}

.page-faq .tut-cta-box .cta-row {
  margin-top: 1.4rem;
}

.page-faq .tut-cta-note {
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(255, 248, 236, 0.66);
  overflow-wrap: anywhere;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .flow-step {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 1rem 1.15rem;
    padding: 1.1rem 1.25rem 1.2rem;
  }

  .page-faq .flow-index {
    width: 2.7rem;
    height: 2.7rem;
    font-size: 0.85rem;
  }
}

@media (min-width: 860px) {
  .page-faq .trouble-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .tut-hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .tut-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .tut-rail {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .tier-panel {
    padding: 1.35rem 1.5rem 1.5rem;
  }
}

@media (min-width: 1080px) {
  .page-faq .tut-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
<<<END>>>