.page-faq {
  --faq-scope: local;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(30px, 5vw, 62px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "FAQ";
  position: absolute;
  right: -0.05em;
  top: -0.3em;
  font-family: var(--font-num);
  font-size: clamp(150px, 27vw, 340px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(242, 245, 249, 0.032);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(52%, 620px);
  height: 5px;
  background: linear-gradient(90deg, var(--green), var(--blue));
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-hero h1 .hl {
  color: var(--green);
}

.page-faq .faq-hero .lede {
  max-width: 36em;
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 20px clamp(20px, 3vw, 44px);
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-metric strong {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(28px, 3.8vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-metric span {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-hero-aside {
  align-self: end;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: var(--panel);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-aside-num {
  margin: 14px 0 10px;
  font-family: var(--font-num);
  font-size: clamp(30px, 4.2vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-aside-text {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-hero-aside .btn {
  width: 100%;
  text-align: center;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(24px, 3.6vw, 44px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

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

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 5;
  margin: 0 0 clamp(20px, 3vw, 32px);
  background: var(--night);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: max-content;
}

.page-faq .faq-index-list a {
  display: block;
  padding: 14px 18px;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--green);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(20px, 3vw, 32px);
  margin-top: clamp(30px, 4.4vw, 52px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-group-head::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-faq .faq-group-title {
  flex: 0 0 auto;
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.5vw, 27px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 2.8vw, 28px);
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .faq-figure figcaption .idx {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--green);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
  transition: background 0.25s ease;
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(18, 183, 106, 0.07), rgba(18, 183, 106, 0) 62%);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(14.5px, 1.65vw, 17px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
}

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

.page-faq .qa summary:focus-visible {
  outline: 1px solid var(--green);
  outline-offset: 3px;
}

.page-faq .qa-num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--green);
}

.page-faq .qa-title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa-arrow {
  flex: 0 0 auto;
  position: relative;
  top: 7px;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-faq .qa[open] .qa-arrow {
  top: 10px;
  transform: rotate(-135deg);
  border-color: var(--green);
}

.page-faq .qa-body {
  padding: 0 4px 22px 34px;
  max-width: 42em;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

.page-faq .qa-body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover {
  color: var(--white);
}

/* ---------- 侧栏三步订阅 ---------- */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .steps-card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: clamp(20px, 2.6vw, 26px);
}

.page-faq .faq-side-title {
  margin: 14px 0 4px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .steps-list {
  position: relative;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
}

.page-faq .steps-list li {
  position: relative;
  padding: 0 0 22px 34px;
}

.page-faq .steps-list li:last-child {
  padding-bottom: 4px;
}

.page-faq .steps-list li::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-faq .steps-list li:last-child::before {
  display: none;
}

.page-faq .step-dot {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 21px;
  height: 21px;
  border: 1px solid var(--green);
  background: var(--night);
  color: var(--green);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .step-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .step-desc {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.7;
}

.page-faq .steps-card .btn {
  display: block;
  width: 100%;
  text-align: center;
}

.page-faq .steps-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .steps-note a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 联系客服 ---------- */
.page-faq .contact-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .contact-card {
  background: var(--panel);
  padding: clamp(18px, 2.4vw, 24px);
}

.page-faq .contact-card dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .contact-card dd {
  margin: 12px 0 0;
  font-family: var(--font-num);
  font-size: clamp(15px, 1.9vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--white);
  word-break: break-word;
}

.page-faq .contact-card dd a {
  color: var(--white);
  text-decoration: none;
}

.page-faq .contact-card dd a:hover {
  color: var(--green);
}

.page-faq .contact-tip {
  margin: 20px 0 0;
  padding: 14px 0 14px 18px;
  border-left: 3px solid var(--orange);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.page-faq .contact-tip a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(26px, 4vw, 56px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .page-faq .faq-side-inner {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-metrics {
    gap: 16px 22px;
  }

  .page-faq .faq-metric {
    flex: 1 1 calc(50% - 22px);
  }

  .page-faq .qa-body {
    padding-left: 0;
    font-size: 14px;
  }

  .page-faq .faq-group-head {
    gap: 10px;
  }

  .page-faq .faq-group-head::after {
    display: none;
  }
}