.page-faq {
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
}

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

.page-faq a:hover {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(22px, 5vw, 56px) clamp(18px, 3.5vw, 36px);
  border-bottom: 1px solid var(--divider);
  background:
    radial-gradient(120% 90% at 84% -12%, rgba(59, 242, 206, 0.13), transparent 62%),
    radial-gradient(90% 70% at 8% 110%, rgba(124, 108, 255, 0.12), transparent 66%),
    linear-gradient(168deg, var(--surface) 0%, var(--ink) 58%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.26;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-crumb a {
  color: var(--cyan-soft);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 62px);
  line-height: 0.99;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.8;
  color: var(--sage);
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  object-fit: cover;
}

/* ---------- 搜索 ---------- */
.page-faq .faq-search {
  margin-top: clamp(20px, 3vw, 30px);
  padding: 14px clamp(14px, 2.4vw, 20px) 16px;
  border: 1px solid var(--grid);
  background: var(--surface-2);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--divider);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--cyan);
}

.page-faq .faq-search__glyph {
  flex: 0 0 auto;
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-search__field input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 4px 0;
  border: 0;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

.page-faq .faq-search__field input::placeholder {
  color: var(--sage);
  opacity: 0.72;
}

.page-faq .faq-search__field input:focus {
  outline: none;
}

.page-faq .faq-search__hint {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--sage);
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  margin-top: clamp(22px, 4vw, 40px);
  padding-top: 18px;
  border-top: 1px solid var(--divider);
}

.page-faq .faq-hot__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.page-faq .faq-hot__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-hot__list li {
  flex: 0 0 auto;
}

.page-faq .faq-hot__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--grid);
  background: var(--surface);
  color: var(--mist);
  font-size: 13.5px;
  white-space: nowrap;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-hot__list a:hover {
  border-color: var(--cyan);
  background: var(--surface-2);
  color: var(--cyan);
}

.page-faq .faq-hot__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  padding-block: clamp(26px, 5vw, 64px);
}

/* ---------- 侧边目录 ---------- */
.page-faq .faq-toc__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-toc__list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--grid);
  color: var(--sage);
  font-size: 13px;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-toc__list a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-toc__list .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(32px, 5vw, 58px);
}

.page-faq .faq-sec__head {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--divider);
}

.page-faq .faq-sec__no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-sec__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.6vw, 33px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  color: var(--mist);
}

.page-faq .faq-sec__note {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--divider);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--divider);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--cyan-soft);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--amber);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--mist);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 1.5px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  left: 7px;
  width: 1.5px;
  height: 16px;
}

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

.page-faq .faq-item__body {
  padding: 0 0 20px 30px;
  border-left: 1px solid transparent;
  color: var(--sage);
  font-size: 15px;
  line-height: 1.82;
}

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  border-bottom: 1px solid var(--divider);
}

.page-faq .faq-item__body a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 步骤与检索示例 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-steps .num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-snippet {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px dashed var(--grid);
  background: var(--surface-2);
}

.page-faq .faq-snippet__label {
  flex: 0 0 100%;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-snippet__code {
  flex: 1 1 180px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--cyan-soft);
  word-break: break-word;
}

/* ---------- 小屏章节图文分栏 ---------- */
.page-faq .faq-sec--split {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

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

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

.page-faq .faq-sec__aside img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  object-fit: cover;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-sec--final {
  padding: clamp(18px, 3.2vw, 30px);
  border: 1px solid var(--grid);
  background:
    linear-gradient(150deg, var(--surface-2) 0%, var(--ink) 78%);
}

.page-faq .faq-sec--final .faq-sec__head {
  border-bottom-color: var(--grid);
}

.page-faq .faq-contact {
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__block {
  padding: 14px 16px;
  border: 1px solid var(--divider);
  background: var(--surface);
  min-width: 0;
}

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-contact .copy-btn {
  max-width: 100%;
}

.page-faq .faq-prep {
  margin-top: clamp(18px, 3vw, 26px);
  padding-top: 16px;
  border-top: 1px solid var(--divider);
}

.page-faq .faq-prep__title {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--amber);
}

.page-faq .faq-prep__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-prep__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-prep__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1.5px;
  background: var(--cyan);
}

.page-faq .faq-final__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .to-top {
  margin-left: auto;
  color: var(--sage);
  transition: color 0.18s var(--ease);
}

.page-faq .to-top:hover {
  color: var(--cyan);
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item__body {
    padding-left: 34px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-faq .faq-hot__list {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .page-faq .faq-body {
    grid-template-columns: 210px minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 88px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-toc__list li {
    flex: 0 0 auto;
  }

  .page-faq .faq-toc__list a {
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 1px solid var(--divider);
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-toc__list a:hover {
    border-left-color: var(--cyan);
  }

  .page-faq .faq-sec--split {
    grid-template-columns: minmax(0, 1fr) 210px;
    align-items: start;
  }

  .page-faq .faq-sec__aside {
    position: sticky;
    top: 88px;
  }

  .page-faq .faq-sec--final {
    padding: clamp(24px, 3vw, 38px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-sec--split {
    grid-template-columns: minmax(0, 1fr) 240px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-hot__list a,
  .page-faq .faq-toc__list a,
  .page-faq .faq-item__q,
  .page-faq .to-top,
  .page-faq .faq-search__field {
    transition: none;
  }
}