.page-faq {
  --faq-gap: 28px;
  padding-bottom: 96px;
}

/* 面包屑 */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 20px 0 0;
  list-style: none;
  font-size: 13px;
  color: var(--fg-2);
}

.page-faq .faq-crumb li {
  display: flex;
  align-items: center;
}

.page-faq .faq-crumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--line);
}

.page-faq .faq-crumb a {
  color: var(--fg-2);
  text-decoration: none;
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-crumb [aria-current="page"] {
  color: var(--fg);
}

/* 首屏分屏 */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 28px;
  padding-bottom: 46px;
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(28px, 7vw, 44px);
  line-height: 1.28;
  letter-spacing: 0.06em;
  color: var(--fg);
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--fg-3);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 快捷索引面板 */
.page-faq .faq-quick {
  position: relative;
  min-width: 0;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(52, 240, 200, 0.12), transparent 62%),
    linear-gradient(165deg, var(--panel), var(--ink-2));
  overflow: hidden;
}

.page-faq .faq-quick::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-faq .faq-quick__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--fg-2);
}

.page-faq .faq-quick__list {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick__list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 8px;
  border-radius: var(--r-sm);
  color: var(--fg-3);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-quick__list a:hover,
.page-faq .faq-quick__list a:focus-visible {
  background: rgba(52, 240, 200, 0.08);
  color: var(--fg);
}

.page-faq .faq-quick__list .mono {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-quick__arrow {
  color: var(--cyan);
  font-size: 14px;
}

.page-faq .faq-quick__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-stat__v {
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-stat__v em {
  margin-left: 4px;
  font-style: normal;
  font-size: 12px;
  color: var(--fg-2);
}

.page-faq .faq-stat__k {
  font-size: 12px;
  line-height: 1.5;
  color: var(--fg-2);
}

/* 主栅格 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-bottom: 24px;
}

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

.page-faq .faq-index__list {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--fg-2);
  text-decoration: none;
  font-size: 14.5px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--fg);
  background: rgba(52, 240, 200, 0.07);
  border-left-color: var(--cyan);
}

.page-faq .faq-index__list .mono {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-index__card {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-2);
}

.page-faq .faq-index__card-t {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-3);
}

.page-faq .faq-index__card-m {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--amber-soft);
  word-break: break-all;
}

.page-faq .faq-index__card-a {
  display: grid;
  gap: 8px;
}

/* 内容区与分段标签 */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  min-width: 0;
}

.page-faq .faq-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-tabs .tabs__btn {
  flex: 0 0 auto;
  min-height: 44px;
  white-space: nowrap;
}

/* 面板 */
.page-faq .faq-panel {
  position: relative;
  min-width: 0;
  padding: 28px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 72%);
}

.page-faq .faq-panel--violet::before {
  background: linear-gradient(90deg, var(--violet), transparent 72%);
}

.page-faq .faq-panel--amber::before {
  background: linear-gradient(90deg, var(--amber), transparent 72%);
}

.page-faq .faq-panel__head {
  margin-bottom: 22px;
}

.page-faq .faq-panel__head h2 {
  margin: 10px 0 12px;
  font-size: clamp(21px, 4.8vw, 27px);
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--fg);
}

.page-faq .faq-panel__lead {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--fg-2);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fg-2);
}

.page-faq .faq-figure--square {
  max-width: 420px;
}

/* 三步节点 */
.page-faq .faq-steps {
  display: grid;
  gap: 22px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  min-height: 44px;
  padding-left: 58px;
}

.page-faq .faq-step__n {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: -22px;
  width: 2px;
  background: linear-gradient(180deg, var(--line), transparent);
}

.page-faq .faq-step h3 {
  margin: 8px 0 8px;
  font-size: 16.5px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--fg);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fg-2);
}

.page-faq .faq-step a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 240, 200, 0.4);
}

/* 刻度尺 */
.page-faq .faq-scale {
  display: grid;
  gap: 16px;
  margin: 0 0 28px;
  padding: 22px 20px;
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
  background: rgba(15, 46, 35, 0.45);
}

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

.page-faq .faq-scale__dot {
  display: block;
  width: 12px;
  height: 12px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(52, 240, 200, 0.16);
}

.page-faq .faq-scale__dot--amber {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 154, 60, 0.16);
}

.page-faq .faq-scale__v {
  margin: 0 0 6px;
  font-size: 18px;
  color: var(--fg);
}

.page-faq .faq-scale__k {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fg-2);
}

.page-faq .faq-scale__bar {
  width: 2px;
  height: 28px;
  margin-left: 5px;
  background: linear-gradient(180deg, var(--cyan), var(--amber));
}

/* 折叠问答 */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
}

.page-faq .faq-q {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-q[open] {
  border-left-color: var(--cyan);
  background: var(--ink-2);
}

.page-faq .faq-q summary {
  position: relative;
  display: block;
  min-height: 44px;
  padding: 15px 46px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--fg);
}

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

.page-faq .faq-q summary::marker {
  content: "";
}

.page-faq .faq-q summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-q[open] summary::after {
  content: "−";
}

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

.page-faq .faq-q summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .faq-q p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fg-2);
}

/* 联系区块 */
.page-faq .faq-contact {
  padding: 28px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--panel), var(--ink-2));
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-contact h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 4.8vw, 26px);
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--fg);
}

.page-faq .faq-contact > p {
  margin: 0 0 20px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-2);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: grid;
  gap: 8px;
  justify-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(4, 18, 14, 0.5);
}

.page-faq .faq-contact__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--fg-2);
}

.page-faq .faq-contact__v {
  font-size: 15px;
  color: var(--fg);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-2);
}

/* 窄屏微调 */
@media (max-width: 420px) {
  .page-faq .faq-quick__stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* 中等断点：三步与刻度尺横向展开 */
@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-faq .faq-step {
    min-height: 0;
    padding-left: 0;
  }

  .page-faq .faq-step__n {
    position: static;
    margin-bottom: 14px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    left: 52px;
    right: -26px;
    top: 19px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--line), transparent);
  }

  .page-faq .faq-step h3 {
    margin-top: 0;
  }

  .page-faq .faq-scale {
    grid-template-columns: minmax(0, 1fr) 120px minmax(0, 1fr);
    align-items: start;
    gap: 0;
    padding: 26px 24px;
  }

  .page-faq .faq-scale__bar {
    width: auto;
    height: 2px;
    margin: 5px 16px 0;
    background: linear-gradient(90deg, var(--cyan), var(--amber));
  }

  .page-faq .faq-scale__node--b {
    text-align: right;
  }

  .page-faq .faq-scale__node--b .faq-scale__dot {
    margin-left: auto;
  }

  .page-faq .faq-contact__list li {
    grid-template-columns: 120px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
  }
}

/* 桌面断点：侧边目录常驻 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 48px;
    align-items: start;
    padding-top: 40px;
    padding-bottom: 64px;
  }

  .page-faq .faq-quick {
    padding: 28px 24px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    max-height: calc(100vh - var(--header-h) - 48px);
    overflow-y: auto;
  }

  .page-faq .faq-panel {
    padding: 34px 32px 30px;
  }

  .page-faq .faq-panel::before {
    left: 32px;
    right: 32px;
  }

  .page-faq .faq-contact {
    padding: 34px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__list a,
  .page-faq .faq-index__list a,
  .page-faq .faq-q {
    transition: none;
  }
}