.page-faq {
  --faq-ink-soft: #5B5852;
  --faq-rule: rgba(26, 28, 34, 0.14);
  --faq-rule-strong: rgba(26, 28, 34, 0.30);
  --faq-gold-ink: #8A6A0F;
  --faq-blue-ink: #1F5FBF;

  background: var(--c-paper);
  color: var(--c-paper-ink);
  font-family: var(--font-cn);
  padding-bottom: 0;
  overflow-x: hidden;
}

.page-faq .faq-crumb {
  padding-top: clamp(22px, 4vw, 40px);
  padding-bottom: clamp(14px, 2.4vw, 22px);
}

.page-faq .breadcrumb a {
  color: var(--faq-ink-soft);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-lava);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-bottom: clamp(38px, 6vw, 72px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-title {
  margin: 10px 0 0;
  font-weight: 900;
  font-size: clamp(2.1rem, 7.2vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: 0.045em;
  color: var(--c-paper-ink);
  text-wrap: balance;
}

.page-faq .faq-hero__lead .lede {
  margin-top: clamp(14px, 2.4vw, 22px);
  max-width: 46ch;
  font-size: clamp(1rem, 1.9vw, 1.1rem);
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__quick .btn {
  font-size: 0.92rem;
  padding: 0.72em 1.25em;
}

.page-faq .faq-hero__quick .btn--ghost {
  border-color: var(--faq-rule-strong);
  color: var(--c-paper-ink);
}

.page-faq .faq-hero__quick .btn--ghost:hover,
.page-faq .faq-hero__quick .btn--ghost:focus-visible {
  border-color: var(--c-lava);
  color: var(--c-lava);
}

.page-faq .faq-hero__figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--faq-rule-strong);
  background: var(--c-deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  overflow: hidden;
}

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

/* ---------- 目录索引 ---------- */

.page-faq .faq-toc {
  border-top: 2px solid var(--c-paper-ink);
  border-bottom: 1px solid var(--faq-rule);
  padding: clamp(18px, 3vw, 26px) 0 clamp(6px, 1.4vw, 12px);
  margin-bottom: clamp(10px, 2vw, 18px);
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--faq-ink-soft);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 10px;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--faq-rule);
  color: var(--c-paper-ink);
  text-decoration: none;
  transition: border-color 0.22s ease, color 0.22s ease, background-color 0.22s ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-left-color: var(--c-lava);
  background: rgba(255, 255, 255, 0.55);
  color: var(--c-lava);
}

.page-faq .faq-toc__list a[aria-current="true"] {
  border-left-color: var(--c-lava);
  color: var(--c-lava);
  font-weight: 700;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--faq-gold-ink);
}

.page-faq .faq-toc__label {
  flex: 1 1 auto;
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-toc__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-ink-soft);
}

/* ---------- 问答区 ---------- */

.page-faq .faq-sec {
  padding: clamp(38px, 6.5vw, 78px) 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-sec__head {
  display: flex;
  gap: clamp(14px, 2.4vw, 26px);
  align-items: flex-start;
  margin-bottom: clamp(22px, 4vw, 38px);
}

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  width: 44px;
  padding-top: 0.45em;
  border-top: 2px solid var(--c-lava);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--faq-gold-ink);
}

.page-faq .faq-sec__title {
  margin: 0 0 8px;
  font-size: clamp(1.55rem, 4vw, 2.3rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--c-paper-ink);
}

.page-faq .faq-sec__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

.page-faq .faq-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-rule-strong);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-rule);
  border-left: 3px solid transparent;
  background: transparent;
  transition: border-color 0.24s ease, background-color 0.24s ease;
}

.page-faq .qa-item[open] {
  border-left-color: var(--c-lava);
  background: rgba(255, 255, 255, 0.45);
}

.page-faq .qa-item summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
  padding: clamp(15px, 2.4vw, 22px) clamp(13px, 2vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item summary:focus-visible {
  outline: 2px solid var(--c-lava);
  outline-offset: -2px;
}

.page-faq .qa-item__q {
  margin: 0;
  font-size: clamp(1rem, 2.1vw, 1.1rem);
  font-weight: 700;
  line-height: 1.62;
  letter-spacing: 0.02em;
  color: var(--c-paper-ink);
  transition: color 0.2s ease;
}

.page-faq .qa-item summary:hover .qa-item__q {
  color: var(--c-lava);
}

.page-faq .qa-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 0.42em;
}

.page-faq .qa-item__mark::before,
.page-faq .qa-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-lava);
  transition: transform 0.24s ease, opacity 0.24s ease;
}

.page-faq .qa-item__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .qa-item__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

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

.page-faq .qa-body {
  padding: 0 clamp(13px, 2vw, 22px) clamp(16px, 2.4vw, 24px);
  max-width: 74ch;
  animation: faq-fade 0.28s ease both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .qa-body p {
  margin: 0 0 10px;
  font-size: 0.97rem;
  line-height: 1.82;
  color: #35322D;
}

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

.page-faq .qa-rel {
  font-size: 0.86rem;
  color: var(--faq-ink-soft);
}

.page-faq .qa-rel a {
  color: var(--faq-blue-ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 95, 191, 0.4);
}

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

/* ---------- 数据查询配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 3.6vw, 36px);
  border: 1px solid var(--faq-rule-strong);
  background: var(--c-deep);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px clamp(14px, 2vw, 20px);
  background: var(--c-paper);
  border-top: 1px solid var(--faq-rule);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

/* ---------- 深墨区：报告与报价 ---------- */

.page-faq .faq-sec--deep {
  position: relative;
  background: var(--c-black);
  color: var(--c-cream);
  border-top: none;
}

.page-faq .faq-sec--deep::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(115deg, rgba(255, 90, 31, 0) 0 58%, rgba(255, 90, 31, 0.12) 58% 100%);
  pointer-events: none;
}

.page-faq .faq-sec--deep > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-sec--deep .faq-sec__num {
  color: var(--c-gold);
}

.page-faq .faq-sec--deep .faq-sec__title {
  color: var(--c-cream);
}

.page-faq .faq-sec--deep .faq-sec__desc {
  color: var(--c-ash);
}

.page-faq .faq-sec--deep .faq-list {
  border-top-color: var(--line-gold);
}

.page-faq .faq-sec--deep .qa-item {
  border-bottom-color: var(--line-soft);
}

.page-faq .faq-sec--deep .qa-item[open] {
  border-left-color: var(--c-lava);
  background: rgba(255, 255, 255, 0.04);
}

.page-faq .faq-sec--deep .qa-item__q {
  color: var(--c-cream);
}

.page-faq .faq-sec--deep .qa-item summary:hover .qa-item__q {
  color: var(--c-lava-2);
}

.page-faq .faq-sec--deep .qa-body p {
  color: rgba(242, 233, 220, 0.86);
}

.page-faq .faq-sec--deep .qa-rel {
  color: var(--c-ash);
}

.page-faq .faq-sec--deep .qa-rel a {
  color: var(--c-blue);
  border-bottom-color: rgba(61, 139, 255, 0.45);
}

.page-faq .faq-sec--deep .qa-rel a:hover,
.page-faq .faq-sec--deep .qa-rel a:focus-visible {
  color: var(--c-lava-2);
  border-bottom-color: var(--c-lava-2);
}

/* ---------- 工单区 ---------- */

.page-faq .faq-sec--ticket {
  background-image: linear-gradient(180deg, rgba(47, 191, 155, 0.08) 0%, rgba(47, 191, 155, 0) 220px);
}

/* ---------- 收束条 ---------- */

.page-faq .faq-cta {
  background: linear-gradient(115deg, var(--c-lava) 0%, var(--c-lava-2) 100%);
  color: var(--c-black);
  padding: clamp(40px, 6.5vw, 72px) 0;
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
}

.page-faq .faq-cta__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(14, 15, 18, 0.7);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: 0.05em;
  color: var(--c-black);
}

.page-faq .faq-cta__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 0.97rem;
  line-height: 1.78;
  color: rgba(14, 15, 18, 0.82);
}

.page-faq .faq-cta__btn {
  justify-self: start;
  background: var(--c-black);
  border-color: var(--c-black);
  color: var(--c-cream);
}

.page-faq .faq-cta__btn:hover,
.page-faq .faq-cta__btn:focus-visible {
  background: var(--c-deep);
  border-color: var(--c-deep);
  color: #fff;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 4vw, 48px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: clamp(32px, 5vw, 68px);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: 1fr auto;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-toc__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    column-gap: clamp(12px, 2vw, 24px);
  }

  .page-faq .faq-toc__count {
    display: none;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-sec__head {
    flex-direction: column;
    gap: 12px;
  }

  .page-faq .faq-sec__num {
    width: 34px;
  }

  .page-faq .faq-hero__figure {
    clip-path: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-body {
    animation: none;
  }

  .page-faq .qa-item,
  .page-faq .qa-item__mark::before,
  .page-faq .qa-item__mark::after,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}