.page-faq {
  background: var(--c-paper);
  color: var(--c-ink);
  overflow-x: hidden;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  background: var(--c-ink);
  color: var(--c-paper);
  padding: calc(var(--header-h) + 48px) 0 clamp(46px, 6vw, 78px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 95% at 88% 6%, rgba(200, 145, 47, 0.3), transparent 58%),
    linear-gradient(118deg, rgba(42, 31, 22, 0.92) 0%, rgba(22, 17, 13, 0) 64%);
  pointer-events: none;
}

.page-faq .faq-hero__wedge {
  position: absolute;
  top: 0;
  right: 0;
  width: 44%;
  height: 100%;
  background: linear-gradient(180deg, rgba(122, 78, 24, 0.55), rgba(122, 78, 24, 0));
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .breadcrumb,
.page-faq .faq-hero .breadcrumb a,
.page-faq .faq-hero .breadcrumb span {
  color: rgba(245, 241, 232, 0.6);
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--c-sand-lt);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 26px;
}

.page-faq .eyebrow {
  color: var(--c-sand);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.16;
  font-size: clamp(30px, 5.6vw, 58px);
  margin: 0 0 20px;
  max-width: 16em;
  color: var(--c-paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.74);
}

.page-faq .faq-hero__plate {
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  padding: 26px 24px;
  background: linear-gradient(150deg, rgba(122, 78, 24, 0.36), rgba(22, 17, 13, 0.12));
}

.page-faq .faq-hero__plate-k {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 232, 0.62);
}

.page-faq .faq-hero__plate-v {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--c-sand-lt);
}

.page-faq .faq-hero__plate-d {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.72);
}

/* ============ 分组索引条 ============ */
.page-faq .faq-rail {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: var(--c-paper);
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  padding: 14px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .faq-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-ink);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-steel);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-rail__link span {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-sand);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--c-sand);
  background: var(--c-mist);
  color: var(--c-ink);
}

/* ============ 区块骨架 ============ */
.page-faq .faq-block {
  padding: clamp(52px, 7vw, 96px) 0;
  scroll-margin-top: calc(var(--header-h) + 78px);
}

.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-block--ink {
  background: var(--c-ink);
  color: var(--c-paper);
  border-top-color: transparent;
}

.page-faq .faq-block__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.page-faq .faq-block__no {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--c-sand);
}

.page-faq .section-title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.24;
  font-size: clamp(22px, 3vw, 32px);
}

.page-faq .faq-block__sub {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-steel);
}

.page-faq .faq-block__sub a {
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-block__sub a:hover {
  color: var(--c-sand);
}

.page-faq .faq-block--ink .section-title {
  color: var(--c-paper);
}

.page-faq .faq-block--ink .faq-block__sub {
  color: rgba(245, 241, 232, 0.66);
}

.page-faq .faq-block--ink .faq-block__no {
  color: var(--c-sand-lt);
}

/* ============ 问答折叠 ============ */
.page-faq .faq-list {
  max-width: 900px;
}

.page-faq .qa {
  border-top: 1px solid var(--line-gold);
}

.page-faq .faq-list .qa:last-of-type {
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--c-sand);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-faq .qa__no {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-sand);
  align-self: center;
}

.page-faq .qa__q {
  font-size: clamp(15.5px, 1.6vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--c-ink);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .qa__head:hover .qa__q {
  color: var(--c-amber);
}

.page-faq .qa[open] .qa__q {
  color: var(--c-amber);
}

.page-faq .qa__mark {
  position: relative;
  width: 20px;
  height: 20px;
  justify-self: end;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--c-sand);
  border-radius: 2px;
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 9px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 9px;
  width: 2px;
  transition: transform var(--t-base) var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 0 0 22px 46px;
  color: var(--c-steel);
  font-size: 15px;
  line-height: 1.88;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 62ch;
}

.page-faq .qa__body a {
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .qa__body a:hover {
  color: var(--c-sand);
}

.page-faq .qa[open] .qa__body {
  animation: faqReveal 320ms var(--ease) both;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ============ 插图 ============ */
.page-faq .faq-shot {
  margin: 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
  box-shadow: var(--shadow-plate);
}

.page-faq .faq-shot figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--c-steel-lt);
}

/* ============ 安装自检清单 ============ */
.page-faq .faq-checkwrap {
  display: grid;
  gap: 32px;
  margin-top: clamp(34px, 4.5vw, 56px);
}

.page-faq .faq-checkpanel__k {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-sand);
}

.page-faq .faq-checkpanel__t {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-check > li {
  border-bottom: 1px solid var(--line-ink);
}

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

.page-faq .faq-check__label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 4px;
  cursor: pointer;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--c-steel);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-check__box {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1.5px solid var(--line-gold);
  border-radius: 6px;
  background: rgba(245, 241, 232, 0.7);
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-check__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--c-ink);
  border-bottom: 2px solid var(--c-ink);
  transform: rotate(45deg) scale(0);
  transition: transform 180ms var(--ease);
}

.page-faq .faq-check__input:checked + .faq-check__label .faq-check__box {
  background: var(--c-sand);
  border-color: var(--c-sand);
}

.page-faq .faq-check__input:checked + .faq-check__label .faq-check__box::after {
  transform: rotate(45deg) scale(1);
}

.page-faq .faq-check__input:checked + .faq-check__label {
  color: var(--c-steel-lt);
  text-decoration: line-through;
  text-decoration-color: var(--line-gold);
}

.page-faq .faq-check__input:focus-visible + .faq-check__label .faq-check__box {
  outline: 2px solid var(--c-sand);
  outline-offset: 2px;
}

/* ============ 报修流程 ============ */
.page-faq .faq-warranty {
  display: grid;
  gap: 34px;
  margin-top: clamp(34px, 4.5vw, 56px);
}

.page-faq .faq-warranty__k {
  margin: 0 0 18px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-sand);
}

.page-faq .faq-flow {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-flow__step {
  border: 1px solid var(--line-gold);
  border-radius: var(--r-lg);
  padding: 22px 20px;
  background: rgba(226, 217, 200, 0.42);
}

.page-faq .faq-flow__no {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-sand);
}

.page-faq .faq-flow__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-faq .faq-flow__txt {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-steel);
}

.page-faq .faq-flow__sep {
  display: none;
  color: var(--c-sand);
}

/* ============ 环境分档 ============ */
.page-faq .faq-env {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-env > li {
  display: grid;
  grid-template-columns: 34px 24px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-ink);
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-env > li:hover {
  background: rgba(226, 217, 200, 0.5);
}

.page-faq .faq-env__code {
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-amber);
}

.page-faq .faq-env__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--c-sand);
}

.page-faq .faq-env__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--c-steel);
}

.page-faq .faq-env__text strong {
  color: var(--c-ink);
  font-weight: 700;
}

/* ============ 人工支持 ============ */
.page-faq .faq-desk {
  display: grid;
  gap: 28px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  padding: clamp(26px, 3.4vw, 44px);
  background: linear-gradient(140deg, rgba(122, 78, 24, 0.3), rgba(42, 31, 22, 0.6));
}

.page-faq .faq-desk__k {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-sand-lt);
}

.page-faq .faq-desk__t {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.86;
  color: rgba(245, 241, 232, 0.78);
  max-width: 46em;
}

.page-faq .faq-desk__t:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-desk__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ============ 响应式 ============ */
@media (min-width: 700px) {
  .page-faq .faq-check__label {
    padding: 15px 6px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    align-items: end;
    gap: 62px;
  }

  .page-faq .faq-block__head {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-block__no {
    padding-top: 4px;
  }

  .page-faq .faq-checkwrap {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 54px;
    align-items: start;
  }

  .page-faq .faq-check {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
    border-top: none;
  }

  .page-faq .faq-check > li {
    border-top: 1px solid var(--line-ink);
  }

  .page-faq .faq-env {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 48px;
    border-top: none;
  }

  .page-faq .faq-env > li {
    border-top: 1px solid var(--line-ink);
  }

  .page-faq .faq-desk {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-desk__acts {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-warranty {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-flow {
    flex-direction: row;
    align-items: stretch;
    gap: 10px;
  }

  .page-faq .faq-flow__step {
    flex: 1 1 0;
  }

  .page-faq .faq-flow__sep {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
  }

  .page-faq .faq-shot--flow img {
    height: 100%;
    min-height: 260px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa__body {
    animation: none;
  }

  .page-faq .qa__mark::after,
  .page-faq .faq-check__box::after {
    transition: none;
  }
}