.page-faq {
  --faq-gap: clamp(20px, 4vw, 40px);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 52px) 0 clamp(28px, 5vw, 60px);
  background:
    radial-gradient(circle at 88% 8%, rgba(255, 106, 69, 0.16), transparent 56%),
    radial-gradient(circle at 4% 88%, rgba(34, 227, 206, 0.14), transparent 58%),
    var(--ink);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -14%;
  width: clamp(220px, 44vw, 540px);
  height: clamp(220px, 44vw, 540px);
  background: linear-gradient(150deg, rgba(34, 227, 206, 0.22), rgba(11, 35, 52, 0));
  border-radius: 48% 52% 40% 60% / 55% 42% 58% 45%;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
  margin-top: clamp(14px, 3vw, 26px);
}

.page-faq .faq-eyebrow {
  margin: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-lead {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  max-width: 34em;
  font-size: clamp(0.9688rem, 1.6vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text);
  opacity: 0.9;
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--panel);
  transform: rotate(-1.4deg);
  box-shadow: 0 28px 56px rgba(0, 0, 0, 0.45);
}

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

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-top: clamp(20px, 4vw, 44px);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 120px;
  padding: clamp(20px, 3vw, 30px) 0 clamp(22px, 3.4vw, 36px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-group:target {
  background: linear-gradient(180deg, rgba(34, 227, 206, 0.08), rgba(34, 227, 206, 0) 68%);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: clamp(10px, 2vw, 18px);
}

.page-faq .faq-num {
  grid-row: 1 / span 2;
  font-size: clamp(1.6rem, 4.4vw, 2.4rem);
  line-height: 1;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.8vw, 1.7rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group-note {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(32, 86, 111, 0.7);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  list-style: none;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .faq-item summary:hover h3,
.page-faq .faq-item summary:focus-visible h3 {
  color: var(--cyan-soft);
}

.page-faq .faq-item[open] summary h3 {
  color: var(--cyan-soft);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--coral);
}

.page-faq .faq-item > p {
  margin: 0 0 16px;
  max-width: 38em;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 0.9688rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-item > p a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item > p a:hover {
  color: var(--cyan-soft);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 28px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(20px, 3.4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background:
    radial-gradient(circle at 92% 12%, rgba(255, 106, 69, 0.18), transparent 62%),
    var(--panel-2);
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 34em;
  font-size: 0.9688rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 索引 ---------- */
.page-faq .faq-toc {
  order: -1;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background: var(--panel);
}

.page-faq .faq-toc-title {
  margin: 0 0 10px;
  font-size: 0.75rem;
  color: var(--muted);
}

.page-faq .faq-toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--text);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-toc-link span {
  font-size: 0.75rem;
  color: var(--cyan);
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-soft);
}

.page-faq .faq-toc-mail {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc-addr {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-toc-note {
  margin: 8px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-item > p {
    margin-left: 26px;
    padding-left: 18px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-hero-figure {
    transform: rotate(-2deg);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 264px;
    align-items: start;
  }

  .page-faq .faq-toc {
    order: 0;
    position: sticky;
    top: 120px;
  }

  .page-faq .faq-toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-toc-link {
    width: 100%;
    padding: 8px 10px;
    border-color: transparent;
    border-radius: 4px;
    line-height: 1.5;
  }

  .page-faq .faq-toc-link:hover,
  .page-faq .faq-toc-link:focus-visible {
    border-color: var(--line);
    background: var(--panel-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero-figure {
    transform: none;
  }

  .page-faq .faq-item summary,
  .page-faq .faq-item summary h3,
  .page-faq .faq-toc-link {
    transition: none;
  }
}