.page-faq {
  --kh-gap: clamp(1.25rem, 3vw, 2rem);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .kh-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.5rem, 7vw, 4.5rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .kh-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -14%;
  width: min(58%, 620px);
  height: 175%;
  background: repeating-linear-gradient(112deg, rgba(242, 107, 29, 0.2) 0 12px, transparent 12px 42px);
  transform: rotate(4deg);
  pointer-events: none;
}

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

.page-faq .kh-hero .lh-breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
}

.page-faq .kh-hero .lh-breadcrumb a,
.page-faq .kh-hero .lh-breadcrumb span {
  color: rgba(250, 247, 242, 0.68);
  text-decoration: none;
}

.page-faq .kh-hero .lh-breadcrumb a:hover,
.page-faq .kh-hero .lh-breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-faq .kh-hero .lh-breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  opacity: 0.45;
}

.page-faq .kh-hero .lh-eyebrow {
  color: var(--orange);
  margin: 0 0 0.75rem;
}

.page-faq .kh-hero__title {
  margin: 0 0 1rem;
  max-width: 22ch;
  color: var(--paper);
  font-size: clamp(1.85rem, 4.6vw, 3.15rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.page-faq .kh-hero__lede {
  margin: 0 0 1.6rem;
  max-width: 58ch;
  color: rgba(250, 247, 242, 0.8);
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  line-height: 1.8;
}

/* 搜索 */
.page-faq .kh-search {
  max-width: 620px;
  margin-bottom: 1.5rem;
}

.page-faq .kh-search__label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(250, 247, 242, 0.58);
}

.page-faq .kh-search__input {
  display: block;
  width: 100%;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  border: 1px solid rgba(250, 247, 242, 0.26);
  background: rgba(250, 247, 242, 0.06);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 1rem;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .kh-search__input::placeholder {
  color: rgba(250, 247, 242, 0.45);
}

.page-faq .kh-search__input:focus {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-color: transparent;
  background: rgba(250, 247, 242, 0.1);
}

.page-faq .kh-search__hint {
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: rgba(250, 247, 242, 0.55);
}

/* 热门问题 */
.page-faq .kh-hot {
  display: grid;
  gap: 0.6rem;
}

.page-faq .kh-hot__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .kh-hot__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .kh-hot__list a {
  display: inline-block;
  padding: 0.42rem 0.9rem;
  border: 1px solid rgba(250, 247, 242, 0.26);
  border-radius: 999px;
  color: var(--paper);
  font-size: 0.84rem;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .kh-hot__list a:hover,
.page-faq .kh-hot__list a:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 229, 195, 0.12);
  color: var(--cyan);
}

/* ---------- 主体布局 ---------- */
.page-faq .kh-body {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-faq .kh-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

/* 左侧索引 */
.page-faq .kh-side {
  display: grid;
  gap: 0.9rem;
}

.page-faq .lh-toc__title {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .lh-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .lh-toc__link {
  display: block;
  padding: 0.36rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-700);
  font-size: 0.83rem;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .lh-toc__link:hover,
.page-faq .lh-toc__link:focus-visible {
  border-color: var(--orange);
  background: var(--orange-100);
  color: var(--ink);
}

.page-faq .lh-toc__link.is-active {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--ink);
  font-weight: 700;
}

.page-faq .kh-side__meta {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 章节 ---------- */
.page-faq .kh-sec {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .kh-sec + .kh-sec {
  margin-top: clamp(2.5rem, 6vw, 4rem);
}

.page-faq .kh-sec__head {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.35rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.page-faq .kh-sec:first-child .kh-sec__head {
  padding-top: 0;
  border-top: 0;
}

.page-faq .kh-sec__num {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .kh-sec__num::after {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--orange);
  opacity: 0.5;
}

.page-faq .kh-sec__head .lh-h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.page-faq .kh-sec__lede {
  margin: 0;
  max-width: 64ch;
  color: var(--ink-700);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* 图 */
.page-faq .kh-fig {
  margin: 0 0 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: var(--shadow-sm);
}

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

.page-faq .kh-fig .lh-figure__cap {
  display: block;
  padding: 0.7rem 0.95rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

/* ---------- 折叠问答 ---------- */
.page-faq .kh-qa {
  display: grid;
  gap: 0.65rem;
}

.page-faq .kh-qa--stack {
  margin-top: 1.4rem;
}

.page-faq .kh-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  overflow: hidden;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .kh-item[open] {
  border-color: rgba(242, 107, 29, 0.5);
  box-shadow: var(--shadow-sm);
}

.page-faq .kh-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.95rem 1.1rem;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .kh-item__q:hover {
  background: var(--orange-100);
}

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

.page-faq .kh-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--mono);
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--orange);
}

.page-faq .kh-item[open] .kh-item__q::after {
  content: "−";
}

.page-faq .kh-item__a {
  padding: 0 1.1rem 1.1rem;
  color: var(--ink-700);
  font-size: 0.93rem;
  line-height: 1.8;
}

.page-faq .kh-item__a > *:first-child {
  margin-top: 0;
}

.page-faq .kh-item__a > *:last-child {
  margin-bottom: 0;
}

.page-faq .kh-item__a p {
  margin: 0 0 0.65rem;
}

.page-faq .kh-item__lead {
  margin: 0 0 0.7rem;
  padding: 0.6rem 0.85rem;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--orange-100);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.65;
}

.page-faq .kh-list {
  margin: 0.5rem 0 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.35rem;
}

.page-faq .kh-list li {
  line-height: 1.7;
}

.page-faq .kh-list li::marker {
  color: var(--orange);
}

.page-faq .kh-inline-link {
  color: var(--cyan-700);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .kh-inline-link:hover,
.page-faq .kh-inline-link:focus-visible {
  color: var(--orange-700);
}

/* ---------- 配置表 ---------- */
.page-faq .kh-sec--config .kh-sec__head {
  padding-bottom: 0.25rem;
}

.page-faq .kh-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 0.9rem;
}

.page-faq .kh-legend__item {
  padding: 0.26rem 0.65rem;
  border: 1px solid rgba(242, 107, 29, 0.28);
  border-radius: 999px;
  background: var(--orange-100);
  color: var(--orange-700);
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.02em;
}

.page-faq .kh-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  -webkit-overflow-scrolling: touch;
}

.page-faq .kh-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.88rem;
  line-height: 1.6;
}

.page-faq .kh-table__cap {
  padding: 0.85rem 1rem;
  text-align: left;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-faq .kh-table th,
.page-faq .kh-table td {
  padding: 0.8rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-faq .kh-table thead th {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-bottom: 0;
}

.page-faq .kh-table tbody th {
  background: var(--paper-2);
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .kh-table tbody tr:last-child th,
.page-faq .kh-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .kh-table td {
  color: var(--ink-700);
}

.page-faq .kh-param {
  font-family: var(--mono);
  font-size: 0.84rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 联系支持 ---------- */
.page-faq .kh-support {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
  margin-top: clamp(2.5rem, 6vw, 4rem);
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
}

.page-faq .kh-support::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -18%;
  width: 46%;
  height: 190%;
  background: repeating-linear-gradient(112deg, rgba(0, 229, 195, 0.12) 0 8px, transparent 8px 34px);
  pointer-events: none;
}

.page-faq .kh-support > * {
  position: relative;
  z-index: 1;
}

.page-faq .kh-support__eyebrow {
  margin: 0 0 0.6rem;
  color: var(--cyan);
  font-size: 0.72rem;
}

.page-faq .kh-support__title {
  margin: 0 0 0.8rem;
  color: var(--paper);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.page-faq .kh-support__lede {
  margin: 0 0 1.4rem;
  max-width: 58ch;
  color: rgba(250, 247, 242, 0.78);
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-faq .kh-contact {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
}

.page-faq .kh-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.85rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(250, 247, 242, 0.16);
  border-radius: var(--radius-sm);
  background: rgba(250, 247, 242, 0.05);
}

.page-faq .kh-contact__key {
  flex: none;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .kh-contact__val {
  min-width: 0;
  color: var(--paper);
  font-size: 0.93rem;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .kh-copy {
  margin-left: auto;
  flex: none;
  padding: 0.28rem 0.7rem;
  border: 1px solid rgba(0, 229, 195, 0.45);
  border-radius: 999px;
  background: transparent;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.72rem;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .kh-copy:hover,
.page-faq .kh-copy:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  outline: none;
}

.page-faq .kh-copy.is-copied {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .kh-support__tip {
  margin: 0 0 1.3rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--orange);
  color: rgba(250, 247, 242, 0.75);
  font-size: 0.88rem;
  line-height: 1.75;
}

.page-faq .kh-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
}

.page-faq .kh-support .lh-btn--ghost {
  border-color: rgba(250, 247, 242, 0.4);
  color: var(--paper);
}

.page-faq .kh-support .lh-btn--ghost:hover,
.page-faq .kh-support .lh-btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 桌面 ---------- */
@media (min-width: 920px) {
  .page-faq .kh-layout {
    grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .kh-side {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
    align-self: start;
    gap: 1.1rem;
    padding-right: 0.5rem;
    border-right: 1px solid var(--line);
  }

  .page-faq .lh-toc__list {
    flex-direction: column;
    gap: 0;
  }

  .page-faq .lh-toc__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: transparent;
    padding: 0.45rem 0.75rem;
    font-size: 0.88rem;
  }

  .page-faq .lh-toc__link:hover,
  .page-faq .lh-toc__link:focus-visible {
    border-left-color: var(--orange);
    background: var(--orange-100);
    color: var(--ink);
  }

  .page-faq .lh-toc__link.is-active {
    border-left-color: var(--orange);
    background: var(--orange-100);
    color: var(--ink);
    font-weight: 700;
  }

  .page-faq .kh-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .kh-hero__title {
    font-size: 3.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kh-search__input,
  .page-faq .kh-hot__list a,
  .page-faq .lh-toc__link,
  .page-faq .kh-item,
  .page-faq .kh-copy {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>