.page-faq {
  --faq-gap: 76px;
  --faq-radius: 14px;
  padding-block: 28px 96px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: 8px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-faq .faq-hero__intro h1 {
  margin: 14px 0 18px;
  font-size: clamp(28px, 7vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* 搜索框 */
.page-faq .faq-search {
  align-self: end;
  padding: 20px 22px 18px;
  border: 1px solid var(--glass-line);
  border-radius: var(--faq-radius);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-search__glyph {
  flex: 0 0 auto;
  font-size: 17px;
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 8px 4px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
}

.page-faq .faq-search__input::placeholder {
  color: var(--steel);
}

.page-faq .faq-search__input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-search__hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--steel);
}

.page-faq .faq-search__hint .mono {
  color: var(--cyan);
}

/* 四组索引卡 */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 40px;
}

.page-faq .faq-index__card {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-800);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card[open] {
  border-color: rgba(44, 224, 206, 0.42);
}

.page-faq .faq-index__card--primary {
  border-color: rgba(44, 224, 206, 0.28);
}

.page-faq .faq-index__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 6px 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-index__head::marker {
  content: "";
}

.page-faq .faq-index__num {
  grid-row: span 2;
  font-size: 20px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-index__title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-index__meta {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-index__body {
  padding: 0 20px 20px;
}

.page-faq .faq-mini {
  margin: 0 0 14px;
  padding: 0 0 0 18px;
  list-style: none;
}

.page-faq .faq-mini li {
  position: relative;
  padding: 5px 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--muted);
}

.page-faq .faq-mini li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 14px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--steel);
}

.page-faq .faq-index__link {
  display: inline-block;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 224, 206, 0.35);
  padding-bottom: 2px;
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  outline: none;
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 通用章节 ---------- */
.page-faq .faq-section {
  margin-top: var(--faq-gap);
}

.page-faq .faq-head {
  max-width: 72ch;
  margin-bottom: 32px;
}

.page-faq .faq-head h2 {
  margin: 14px 0 16px;
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-head .lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-sub {
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-note-panel .faq-note-panel__line {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-note-panel .faq-note-panel__line:last-child {
  margin-bottom: 0;
}

.page-faq .faq-note-panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 224, 206, 0.35);
}

.page-faq .faq-figure {
  margin: 0 0 34px;
}

.page-faq .faq-figure--aside {
  margin: 26px 0 0;
}

.page-faq .faq-hint {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0 0 0 36px;
  list-style: none;
  position: relative;
  counter-reset: faqstep;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(44, 224, 206, 0.12));
}

.page-faq .faq-steps > li {
  position: relative;
  counter-increment: faqstep;
  padding: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-steps > li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: -36px;
  top: 1px;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border: 1px solid var(--hair);
  border-radius: 50%;
  background: var(--ink-900);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

.page-faq .faq-steps a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 224, 206, 0.35);
}

.page-faq .faq-steps--range {
  margin-top: 34px;
}

/* ---------- 分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-top: 34px;
}

/* ---------- 到场条带 ---------- */
.page-faq .faq-bands {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-faq .faq-band {
  padding: 18px 20px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-800);
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-band:hover,
.page-faq .faq-band:focus-visible {
  border-color: rgba(44, 224, 206, 0.35);
  border-left-color: var(--cyan);
  background: var(--ink-700);
  outline: none;
}

.page-faq .faq-band:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-band__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-band__time {
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-band__name {
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-faq .faq-band__bar {
  height: 5px;
  border-radius: 3px;
  background: rgba(126, 147, 166, 0.18);
  overflow: hidden;
}

.page-faq .faq-band__bar > span {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transition: width 420ms var(--ease);
}

.page-faq .faq-band--4 .faq-band__bar > span { width: 17%; }
.page-faq .faq-band--8 .faq-band__bar > span { width: 34%; }
.page-faq .faq-band--24 .faq-band__bar > span { width: 100%; }

.page-faq .faq-band__cond {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
  opacity: 0.55;
  transition: opacity 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .faq-band:hover .faq-band__cond,
.page-faq .faq-band:focus-visible .faq-band__cond {
  opacity: 1;
  color: var(--muted);
}

/* ---------- 编号查询面板 ---------- */
.page-faq .faq-lookup {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-700);
}

.page-faq .faq-lookup__label {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-faq .faq-lookup__field {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border: 1px solid var(--hair);
  border-radius: 10px;
  background: rgba(7, 22, 35, 0.55);
}

.page-faq .faq-lookup__glyph {
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-lookup__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 13px 2px;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
}

.page-faq .faq-lookup__input::placeholder {
  color: var(--steel);
}

.page-faq .faq-lookup__input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-faq .faq-lookup__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-lookup__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px 2px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-lookup__code {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-lookup__name {
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- 适配区间 ---------- */
.page-faq .faq-terms {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 4px;
}

.page-faq .faq-term {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--ink-800);
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-term:hover {
  border-color: rgba(44, 224, 206, 0.38);
}

.page-faq .faq-term__code {
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}

.page-faq .faq-term__name {
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- 学习路径 ---------- */
.page-faq .faq-track {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-track__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-track__idx {
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan);
  line-height: 1.2;
}

.page-faq .faq-track__title {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-track__time {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-faq .faq-track__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
  max-width: 64ch;
}

.page-faq .faq-note {
  margin: 28px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--orange);
  border-radius: 0 10px 10px 0;
  background: var(--ink-800);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 224, 206, 0.35);
}

/* ---------- 收束 ---------- */
.page-faq .faq-cta {
  margin-top: var(--faq-gap);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 24px;
  padding: 30px 24px;
  border: 1px solid var(--glass-line);
  border-radius: 18px;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-cta__text h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 3.6vw, 27px);
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-cta__text p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.35fr 0.65fr;
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-band {
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    gap: 8px 26px;
  }

  .page-faq .faq-band__head {
    grid-column: 1;
    grid-row: 1;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 0;
  }

  .page-faq .faq-band__bar {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-band__cond {
    grid-column: 2;
    grid-row: 2;
    margin: 0;
  }

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

  .page-faq .faq-track__item {
    grid-template-columns: 84px 1fr;
    gap: 26px;
    padding: 28px 0;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: 1.4fr auto;
    align-items: center;
    padding: 40px 36px;
    gap: 36px;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    --faq-gap: 96px;
    padding-block: 40px 120px;
  }

  .page-faq .faq-split {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 48px;
    margin-top: 40px;
  }

  .page-faq .faq-split--flip {
    grid-template-columns: 1.15fr 0.85fr;
  }

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

  .page-faq .faq-bands {
    gap: 14px;
  }

  .page-faq .faq-band {
    grid-template-columns: 240px 1fr;
  }

  .page-faq .faq-track__item {
    grid-template-columns: 110px 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__card,
  .page-faq .faq-band,
  .page-faq .faq-band__bar > span,
  .page-faq .faq-band__cond,
  .page-faq .faq-term,
  .page-faq .faq-index__link {
    transition: none;
  }
}