.page-faq {
  --faq-radius: 14px;
  --faq-gap: 20px;
  background: var(--ink-black);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 44px) 0 56px;
  background:
    radial-gradient(110% 80% at 88% -10%, rgba(31, 91, 255, .32), transparent 60%),
    radial-gradient(75% 65% at 2% 108%, rgba(0, 229, 208, .14), transparent 62%),
    var(--ink-black);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(215, 222, 232, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(215, 222, 232, .05) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 78%);
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .02em;
  color: var(--graphite);
  margin-bottom: 28px;
}

.page-faq .breadcrumb a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--electric);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-faq .bc-sep {
  color: var(--line-dark-strong);
}

.page-faq .hero-grid {
  display: grid;
  gap: 32px;
}

.page-faq .hero-copy h1 {
  margin: 14px 0 0;
  font-size: clamp(1.85rem, 5.4vw, 3.3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 900;
  max-width: 16em;
}

.page-faq .hero-copy .lead {
  margin: 20px 0 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(246, 248, 251, .82);
}

.page-faq .hero-cta {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .hero-stats {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--faq-radius);
  overflow: hidden;
  align-self: start;
}

.page-faq .stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(11, 18, 32, .82);
}

.page-faq .stat-num {
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 700;
  color: var(--electric);
  line-height: 1;
}

.page-faq .stat-label {
  font-size: 14px;
  color: rgba(246, 248, 251, .74);
}

/* ---------- 阶段路径 ---------- */
.page-faq .stage-section {
  padding: 52px 0 60px;
  background: var(--ink-black);
}

.page-faq .sec-head {
  max-width: 62ch;
}

.page-faq .sec-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 900;
}

.page-faq .sec-head .prose {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(246, 248, 251, .78);
}

.page-faq .stage-figure {
  margin: 30px 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line-dark);
}

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

.page-faq .stage-track {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .stage-item {
  position: relative;
  padding: 22px 18px 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(18, 32, 58, .82), rgba(11, 18, 32, .82));
  overflow: hidden;
}

.page-faq .stage-item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--faq-stage-accent, var(--electric));
}

.page-faq .stage-item--blue { --faq-stage-accent: linear-gradient(90deg, var(--tech-blue), rgba(31, 91, 255, .25)); }
.page-faq .stage-item--electric { --faq-stage-accent: linear-gradient(90deg, var(--electric), rgba(0, 229, 208, .25)); }
.page-faq .stage-item--amber { --faq-stage-accent: linear-gradient(90deg, var(--amber), rgba(255, 194, 75, .25)); }
.page-faq .stage-item--coral { --faq-stage-accent: linear-gradient(90deg, var(--coral), rgba(255, 107, 61, .25)); }

.page-faq .stage-item::before {
  background: var(--faq-stage-accent, var(--electric));
}

.page-faq .stage-idx {
  display: block;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--electric);
}

.page-faq .stage-item--amber .stage-idx { color: var(--amber); }
.page-faq .stage-item--coral .stage-idx { color: var(--coral); }
.page-faq .stage-item--blue .stage-idx { color: #7FA4FF; }

.page-faq .stage-item h3 {
  margin: 10px 0 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.005em;
}

.page-faq .stage-item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(246, 248, 251, .74);
}

.page-faq .stage-count {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: .06em;
  padding: 4px 9px;
  border: 1px dashed var(--line-dark-strong);
  border-radius: 999px;
  color: rgba(246, 248, 251, .68);
}

/* ---------- 双栏主体 ---------- */
.page-faq .split-section {
  padding: 8px 0 60px;
  background:
    linear-gradient(180deg, rgba(11, 18, 32, 0) 0%, rgba(11, 18, 32, .6) 40%, rgba(5, 7, 12, .9) 100%);
}

.page-faq .guide-split {
  display: grid;
  gap: 30px;
}

.page-faq .rail-card {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--faq-radius);
  background: rgba(11, 18, 32, .78);
}

.page-faq .stage-dir {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .stage-dir a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  min-height: 44px;
  padding: 10px 10px 10px 8px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: rgba(246, 248, 251, .82);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
}

.page-faq .stage-dir a .mono {
  font-size: 12px;
  color: var(--electric);
  letter-spacing: .06em;
}

.page-faq .stage-dir a:hover,
.page-faq .stage-dir a:focus-visible {
  border-left-color: var(--electric);
  background: rgba(0, 229, 208, .07);
  color: #fff;
}

/* 手风琴 */
.page-faq .accordion {
  margin-top: 26px;
}

.page-faq .acc-head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-faq .acc-head .prose {
  margin: 10px 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 248, 251, .72);
}

.page-faq .accordion details {
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: rgba(11, 18, 32, .66);
  margin-bottom: 10px;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .accordion details[open] {
  border-color: rgba(0, 229, 208, .5);
  background: rgba(11, 18, 32, .92);
}

.page-faq .accordion summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

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

.page-faq .accordion summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--electric);
}

.page-faq .accordion details[open] summary::after { content: "–"; }

.page-faq .acc-num {
  flex: none;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--graphite);
}

.page-faq .accordion details[open] .acc-num { color: var(--electric); }

.page-faq .acc-t { min-width: 0; }

.page-faq .accordion details p {
  margin: 0;
  padding: 0 16px 16px 44px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 248, 251, .76);
}

/* 场景示例 */
.page-faq .sec-head-sm h2 {
  margin: 10px 0 0;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-faq .sec-head-sm p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(246, 248, 251, .76);
  max-width: 46ch;
}

.page-faq .scene-figure {
  margin: 24px 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--line-dark);
}

.page-faq .scene-group {
  margin-top: 30px;
}

.page-faq .scene-group-title {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .05em;
  font-weight: 600;
  border: 1px solid currentColor;
}

.page-faq .scene-group--kw .scene-group-title { color: #7FA4FF; }
.page-faq .scene-group--code .scene-group-title { color: var(--electric); }
.page-faq .scene-group--time .scene-group-title { color: var(--amber); }

.page-faq .scene-cards {
  display: grid;
  gap: 10px;
}

.page-faq .scene-card {
  padding: 14px 15px 14px 16px;
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--faq-scene-accent, var(--electric));
  border-radius: 10px;
  background: rgba(11, 18, 32, .58);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .scene-group--kw .scene-card { --faq-scene-accent: #2C6BFF; }
.page-faq .scene-group--code .scene-card { --faq-scene-accent: var(--electric); }
.page-faq .scene-group--time .scene-card { --faq-scene-accent: var(--amber); }

.page-faq .scene-card:hover {
  transform: translateY(-2px);
  border-color: var(--faq-scene-accent, var(--electric));
}

.page-faq .scene-card h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.page-faq .scene-card p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(246, 248, 251, .72);
}

/* 自查清单 */
.page-faq .checklist-panel {
  margin-top: 38px;
  padding: 26px 20px 24px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .checklist-panel .sec-head-sm h2 { color: var(--ink); }
.page-faq .checklist-panel .sec-head-sm p { color: var(--graphite); }
.page-faq .checklist-panel .eyebrow { color: #4A5566; }

.page-faq .check-list {
  list-style: none;
  margin: 18px 0 22px;
  padding: 0;
}

.page-faq .check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  cursor: pointer;
  position: relative;
}

.page-faq .check-list li:last-child .check { border-bottom: 0; }

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

.page-faq .check-box {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1.5px solid var(--graphite);
  border-radius: 4px;
  position: relative;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .check input:checked + .check-box {
  background: var(--electric);
  border-color: var(--electric);
}

.page-faq .check input:checked + .check-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-black);
  border-bottom: 2px solid var(--ink-black);
  transform: rotate(45deg);
}

.page-faq .check input:focus-visible + .check-box {
  outline: 2px solid var(--tech-blue);
  outline-offset: 2px;
}

.page-faq .check-text {
  font-size: 15px;
  line-height: 1.65;
  color: #1C2430;
}

.page-faq .check input:checked ~ .check-text {
  color: var(--graphite);
  text-decoration: line-through;
  text-decoration-color: var(--line);
}

/* ---------- 下载与移动端 ---------- */
.page-faq .utility-section {
  padding: 54px 0 62px;
  background: var(--ink-black);
}

.page-faq .utility-grid {
  display: grid;
  gap: 20px;
}

.page-faq .utility-card {
  padding: 26px 22px 24px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .utility-card .eyebrow {
  color: #4A5566;
}

.page-faq .utility-card h2 {
  margin: 10px 0 0;
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .utility-card > p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: #3B4插;
  color: #3B4655;
}

.page-faq .rule-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .rule-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .rule-idx {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--tech-blue);
  padding-top: 2px;
}

.page-faq .rule-list h3 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .rule-list p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #4A5566;
}

/* ---------- 结尾 ---------- */
.page-faq .faq-cta {
  padding: 58px 0 68px;
  background:
    radial-gradient(90% 130% at 12% 0%, rgba(31, 91, 255, .28), transparent 62%),
    var(--midnight);
  border-top: 1px solid var(--line-dark);
}

.page-faq .cta-inner {
  position: relative;
  padding: 32px 24px;
  border: 1px solid var(--line-dark);
  border-radius: var(--faq-radius);
  background: rgba(5, 7, 12, .5);
}

.page-faq .cta-inner h2 {
  margin: 12px 0 0;
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.22;
  max-width: 20em;
}

.page-faq .cta-inner p {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(246, 248, 251, .78);
}

.page-faq .cta-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 60px) 0 72px;
  }

  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .hero-stats {
    margin-top: 34px;
  }

  .page-faq .stage-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

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

  .page-faq .cta-inner {
    padding: 42px 38px;
  }
}

@media (min-width: 1000px) {
  .page-faq .stage-section {
    padding: 66px 0 76px;
  }

  .page-faq .stage-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-top: 30px;
  }

  .page-faq .guide-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 42px;
    align-items: start;
  }

  .page-faq .split-section {
    padding: 8px 0 78px;
  }

  .page-faq .utility-section {
    padding: 68px 0 78px;
  }

  .page-faq .checklist-panel {
    padding: 32px 30px 28px;
  }
}

@media (min-width: 1240px) {
  .page-faq .guide-split {
    gap: 56px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .scene-card,
  .page-faq .accordion details,
  .page-faq .stage-dir a,
  .page-faq .check-box {
    transition: none;
  }

  .page-faq .scene-card:hover {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>