.page-faq {
  --faq-accent: var(--blue);
  --faq-surface: rgba(255, 255, 255, .028);
  --faq-surface-strong: rgba(255, 255, 255, .055);
  --faq-body-text: rgba(242, 245, 250, .80);
}

.page-faq .container {
  padding-block: clamp(20px, 4vw, 52px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mute);
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-bottom: clamp(22px, 3.6vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -14px;
  right: 0;
  width: clamp(90px, 22vw, 220px);
  height: 6px;
  background: linear-gradient(90deg, var(--orange), var(--yellow) 45%, var(--green) 75%, var(--blue));
  border-radius: 3px;
  transform: skewX(-18deg);
  opacity: .9;
}

.page-faq .hero-kicker {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 9vw, 76px);
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--fog);
  text-shadow: 0 0 46px rgba(255, 122, 26, .26);
}

.page-faq .hero-title::after {
  content: "";
  display: block;
  width: clamp(76px, 20vw, 168px);
  height: 8px;
  margin-top: 16px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--orange), var(--yellow) 58%, var(--green));
  transform: skewX(-14deg);
}

.page-faq .hero-lead {
  max-width: 64ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .hero-stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 20px 10px 14px;
  border-left: 3px solid var(--orange);
  background: var(--faq-surface);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
}

.page-faq .hero-stats li:nth-child(2) {
  border-left-color: var(--green);
}

.page-faq .hero-stats li:nth-child(3) {
  border-left-color: var(--blue);
}

.page-faq .stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fog);
}

.page-faq .stat-label {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mute);
}

/* ---------- 筛选 ---------- */
.page-faq .filter-wrap {
  position: relative;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .filter-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 18px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
  border-bottom: 1px dashed var(--line);
}

.page-faq .filter-pill {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, .03);
  color: rgba(242, 245, 250, .76);
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
  user-select: none;
}

.page-faq .filter-pill:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  color: var(--fog);
}

.page-faq #f-all:checked ~ .filter-bar .filter-pill[for="f-all"],
.page-faq #f-tag:checked ~ .filter-bar .filter-pill[for="f-tag"],
.page-faq #f-ver:checked ~ .filter-bar .filter-pill[for="f-ver"],
.page-faq #f-dl:checked ~ .filter-bar .filter-pill[for="f-dl"],
.page-faq #f-coop:checked ~ .filter-bar .filter-pill[for="f-coop"],
.page-faq #f-fix:checked ~ .filter-bar .filter-pill[for="f-fix"] {
  background: linear-gradient(135deg, var(--orange), var(--yellow));
  border-color: transparent;
  color: var(--ink-deep);
  font-weight: 700;
}

.page-faq #f-all:focus-visible ~ .filter-bar .filter-pill[for="f-all"],
.page-faq #f-tag:focus-visible ~ .filter-bar .filter-pill[for="f-tag"],
.page-faq #f-ver:focus-visible ~ .filter-bar .filter-pill[for="f-ver"],
.page-faq #f-dl:focus-visible ~ .filter-bar .filter-pill[for="f-dl"],
.page-faq #f-coop:focus-visible ~ .filter-bar .filter-pill[for="f-coop"],
.page-faq #f-fix:focus-visible ~ .filter-bar .filter-pill[for="f-fix"] {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-faq #f-tag:checked ~ .faq-list .faq-block:not([data-cat="tag"]),
.page-faq #f-ver:checked ~ .faq-list .faq-block:not([data-cat="ver"]),
.page-faq #f-dl:checked ~ .faq-list .faq-block:not([data-cat="dl"]),
.page-faq #f-coop:checked ~ .faq-list .faq-block:not([data-cat="coop"]),
.page-faq #f-fix:checked ~ .faq-list .faq-block:not([data-cat="fix"]) {
  display: none;
}

/* ---------- 栏目块 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: clamp(20px, 3.2vw, 34px) 0 clamp(22px, 3.4vw, 38px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-block:first-of-type {
  border-top: 0;
}

.page-faq .faq-block::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(60px, 14vw, 130px);
  height: 3px;
  background: var(--faq-accent);
  transform: skewX(-16deg);
}

.page-faq .faq-block:nth-of-type(1) { --faq-accent: var(--orange); }
.page-faq .faq-block:nth-of-type(2) { --faq-accent: var(--green); }
.page-faq .faq-block:nth-of-type(3) { --faq-accent: var(--blue); }
.page-faq .faq-block:nth-of-type(4) { --faq-accent: var(--violet); }
.page-faq .faq-block:nth-of-type(5) { --faq-accent: var(--yellow); }
.page-faq .faq-block:nth-of-type(6) { --faq-accent: var(--mute); }

.page-faq .block-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .block-no {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 34px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--ink-deep);
  background: var(--faq-accent);
  clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
}

.page-faq .block-head-text {
  min-width: 0;
}

.page-faq .block-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.1vw, 28px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-faq .block-sub {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .block-body {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-item {
  background: var(--faq-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  margin-bottom: 10px;
  transition: border-color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease);
}

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

.page-faq .qa-item:hover {
  border-color: var(--faq-accent);
  background: var(--faq-surface-strong);
  transform: translateY(-2px);
}

.page-faq .qa-item[open] {
  background: var(--faq-surface-strong);
  border-color: var(--faq-accent);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 20px;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.6;
  color: var(--fog);
}

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

.page-faq .qa-q::after {
  content: "";
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--faq-accent);
  border-bottom: 2px solid var(--faq-accent);
  transform: translateY(-3px) rotate(45deg);
  transition: transform .25s var(--ease);
  justify-self: center;
  align-self: center;
}

.page-faq .qa-item[open] .qa-q::after {
  transform: translateY(1px) rotate(225deg);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
  border-radius: var(--radius-m);
}

.page-faq .qa-no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--faq-accent);
  white-space: nowrap;
}

.page-faq .qa-text {
  min-width: 0;
}

.page-faq .qa-a {
  margin: 0 16px 16px 38px;
  padding-left: 14px;
  border-left: 2px solid var(--faq-accent);
}

.page-faq .qa-a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-a a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 168, 255, .45);
  transition: border-color .2s var(--ease);
}

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

/* ---------- 插图 ---------- */
.page-faq .qa-figure {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

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

.page-faq .img-caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .02);
}

/* ---------- 纠错流程 ---------- */
.page-faq .flow-figure {
  margin: 0;
  padding: 16px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-m);
  background: rgba(255, 212, 0, .045);
}

.page-faq .fix-flow {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin: 0 auto;
}

.page-faq .flow-figure .img-caption {
  border-top: 0;
  background: transparent;
  padding: 10px 0 0;
  text-align: center;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(26px, 4vw, 46px);
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(255, 122, 26, .16), transparent 58%),
    radial-gradient(120% 140% at 100% 100%, rgba(31, 169, 122, .16), transparent 58%),
    var(--panel);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .cta-text {
  margin: 0;
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--fog);
}

.page-faq .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 820px) {
  .page-faq .block-body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-faq .block-body > .qa-col {
    min-width: 0;
  }

  .page-faq .qa-col {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 12px;
  }

  .page-faq .qa-item {
    grid-column: 1 / -1;
  }

  .page-faq .qa-a {
    margin-left: 38px;
  }

  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-block {
    padding-left: 26px;
  }

  .page-faq .qa-q {
    grid-template-columns: auto minmax(0, 1fr) 24px;
    gap: 16px;
    padding: 17px 20px;
  }

  .page-faq .qa-a {
    margin: 0 20px 18px 44px;
    padding-left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item,
  .page-faq .qa-q::after,
  .page-faq .filter-pill {
    transition: none;
  }

  .page-faq .qa-item:hover {
    transform: none;
  }

  .page-faq .filter-pill:hover {
    transform: none;
  }
}