.page-faq {
  background: var(--warm);
  color: var(--ink);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  background: var(--ink);
  color: var(--warm);
  padding: clamp(28px, 4vw, 48px) 0 clamp(72px, 10vw, 120px);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 44px));
}

.page-faq .faq-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: var(--fs-14);
  color: rgba(250, 246, 239, 0.62);
}

.page-faq .faq-hero__crumbs a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.16s var(--ease);
}

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

.page-faq .faq-hero__eyebrow {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cyan);
  background: rgba(22, 224, 206, 0.12);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(2.75rem, 10vw, var(--fs-96));
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  max-width: 44ch;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: clamp(1rem, 1.5vw, var(--fs-22));
  line-height: 1.75;
  color: rgba(250, 246, 239, 0.86);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 48px);
  margin: clamp(26px, 3.5vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stat {
  padding-left: 16px;
  border-left: 3px solid var(--red);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.6vw, var(--fs-40));
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-14);
  color: rgba(250, 246, 239, 0.7);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 3.5vw, 40px);
}

.page-faq .faq-hero__actions .btn-ghost {
  color: var(--warm);
  border-color: rgba(250, 246, 239, 0.45);
}

.page-faq .faq-hero__actions .btn-ghost:hover,
.page-faq .faq-hero__actions .btn-ghost:focus-visible {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

/* ===== 分类索引 ===== */
.page-faq .faq-cats {
  padding: clamp(40px, 6vw, 84px) 0 clamp(32px, 4vw, 56px);
}

.page-faq .faq-cats__layout {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
}

.page-faq .faq-cats__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-cat {
  position: relative;
  display: block;
  overflow: hidden;
  padding: 20px 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 6px solid var(--red);
  color: var(--ink);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-faq .faq-cat::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: rgba(226, 55, 43, 0.08);
  transition: width 0.16s var(--ease);
  pointer-events: none;
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 0 0 2px var(--cyan-deep);
}

.page-faq .faq-cat:hover::after,
.page-faq .faq-cat:focus-visible::after {
  width: 100%;
}

.page-faq .faq-cat__name,
.page-faq .faq-cat__count,
.page-faq .faq-cat__desc {
  position: relative;
  z-index: 1;
  display: block;
}

.page-faq .faq-cat__name {
  font-size: var(--fs-22);
  font-weight: 800;
  line-height: 1.3;
}

.page-faq .faq-cat__count {
  margin: 10px 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-40);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-faq .faq-cat__count small {
  margin-left: 4px;
  font-size: var(--fs-14);
  font-weight: 600;
}

.page-faq .faq-cat__desc {
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--slate);
}

.page-faq .faq-cat:nth-child(2) {
  border-top-color: var(--ink);
}

.page-faq .faq-cat:nth-child(2) .faq-cat__count {
  color: var(--ink);
}

.page-faq .faq-cat:nth-child(3) {
  border-top-color: var(--cyan-deep);
}

.page-faq .faq-cat:nth-child(3) .faq-cat__count {
  color: var(--cyan-deep);
}

.page-faq .faq-cat:nth-child(4) {
  border-top-color: var(--ink-2);
}

.page-faq .faq-cat:nth-child(4) .faq-cat__count {
  color: var(--ink-2);
}

.page-faq .faq-cat:nth-child(5) {
  border-top-color: var(--red-deep);
}

.page-faq .faq-cat:nth-child(5) .faq-cat__count {
  color: var(--red-deep);
}

.page-faq .faq-cats__figure {
  margin: 0;
}

.page-faq .faq-cats__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-faq .faq-cats__figure figcaption {
  margin-top: 12px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--slate);
}

/* ===== 问答主体 ===== */
.page-faq .faq-board {
  padding: clamp(32px, 5vw, 72px) 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-board__title {
  margin: 0 0 clamp(18px, 2.5vw, 26px);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-faq .faq-board__grid {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
}

.page-faq .faq-side {
  padding: 16px;
  background: var(--ink);
  border-left: 6px solid var(--red);
}

.page-faq .faq-side__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(250, 246, 239, 0.55);
}

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

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.4;
  color: rgba(250, 246, 239, 0.84);
  text-decoration: none;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible,
.page-faq .faq-nav__link[aria-current="true"] {
  background: var(--ink-2);
  border-left-color: var(--cyan);
  color: var(--cyan);
}

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

.page-faq .faq-nav__num {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  color: rgba(250, 246, 239, 0.5);
}

.page-faq .faq-nav__link[aria-current="true"] .faq-nav__num {
  color: var(--cyan);
}

/* ===== 问答分组 ===== */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 4.5vw, 60px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 2px 12px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ink);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, var(--fs-28));
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--slate);
}

.page-faq .faq-item {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.16s var(--ease);
}

.page-faq .faq-item[open] {
  box-shadow: inset 4px 0 0 var(--red);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 22px;
  align-items: start;
  gap: 12px;
  padding: 16px 10px 16px 14px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-18);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: background 0.16s var(--ease);
}

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

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

.page-faq .faq-item__q:hover {
  background: rgba(226, 55, 43, 0.05);
}

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

.page-faq .faq-item__num {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-faq .faq-item__mark {
  position: relative;
  justify-self: end;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  border: 2px solid var(--cyan-deep);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan-deep);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 10px;
  transition: opacity 0.16s var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 16px 18px 44px;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a ol {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 20px;
}

.page-faq .faq-path {
  padding: 0 5px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.94em;
  color: var(--ink);
  background: rgba(22, 224, 206, 0.2);
  border-bottom: 3px solid var(--cyan);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* 收藏与记录专区 */
.page-faq .faq-group--sync {
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
}

.page-faq .faq-group--sync .faq-group__head {
  border-bottom-color: var(--red);
}

.page-faq .faq-group--sync .faq-group__idx {
  color: var(--cyan);
}

.page-faq .faq-group--sync .faq-group__title {
  color: var(--paper);
}

.page-faq .faq-group--sync .faq-group__note {
  color: rgba(250, 246, 239, 0.72);
}

.page-faq .faq-group--sync .faq-group__items {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-group--sync .faq-item {
  border-bottom: 0;
}

/* ===== 自助排查 ===== */
.page-faq .faq-scan {
  padding: clamp(40px, 6vw, 84px) 0;
  background: var(--paper);
}

.page-faq .faq-scan__head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-faq .faq-scan__figure {
  margin: 0 0 clamp(24px, 3.5vw, 40px);
}

.page-faq .faq-scan__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 36px) 100%, 0 100%);
}

.page-faq .faq-scan__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--slate);
}

.page-faq .faq-scan__steps {
  display: grid;
  gap: clamp(16px, 2.5vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-scan__step {
  padding: 22px 20px 24px;
  background: var(--warm);
  border-top: 6px solid var(--red);
}

.page-faq .faq-scan__step:nth-child(2) {
  border-top-color: var(--ink);
}

.page-faq .faq-scan__step:nth-child(3) {
  border-top-color: var(--cyan-deep);
}

.page-faq .faq-scan__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-faq .faq-scan__step:nth-child(2) .faq-scan__num {
  color: var(--ink);
}

.page-faq .faq-scan__step:nth-child(3) .faq-scan__num {
  color: var(--cyan-deep);
}

.page-faq .faq-scan__step-title {
  margin: 0 0 8px;
  font-size: var(--fs-18);
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-scan__step p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--slate);
}

/* ===== 收尾出口 ===== */
.page-faq .faq-escape {
  padding: 0 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-escape__panel {
  padding: clamp(26px, 4vw, 48px);
  background: var(--ink);
  border-left: 8px solid var(--red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-faq .faq-escape__index {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-escape__panel h2 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 3.2vw, var(--fs-40));
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-escape__lead {
  max-width: 62ch;
  margin: 0 0 22px;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(250, 246, 239, 0.84);
}

.page-faq .faq-escape__list {
  display: grid;
  gap: 10px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: rgba(250, 246, 239, 0.9);
}

.page-faq .faq-escape__list li {
  position: relative;
  padding-left: 22px;
}

.page-faq .faq-escape__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 3px;
  background: var(--red);
}

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

/* ===== 响应式 ===== */
@media (min-width: 600px) {
  .page-faq .faq-cats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

@media (min-width: 940px) {
  .page-faq .faq-cats__layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-board__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cats__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 979px) {
  .page-faq .faq-nav__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }

  .page-faq .faq-nav__item {
    flex: none;
  }

  .page-faq .faq-nav__link {
    white-space: nowrap;
    font-size: var(--fs-14);
    padding: 8px 12px;
    border-left-width: 3px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__q {
    grid-template-columns: auto minmax(0, 1fr) 20px;
    gap: 10px;
    padding: 14px 10px 14px 12px;
    font-size: var(--fs-16);
  }

  .page-faq .faq-item__a {
    padding: 0 12px 16px 12px;
  }

  .page-faq .faq-escape__panel {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-cat::after,
  .page-faq .faq-item,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-nav__link,
  .page-faq .faq-item__q {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .faq-cat:focus-visible {
    transform: none;
  }
}