/* ========== 帮助中心 FAQ 页面专属样式 ========== */
.page-faq {
  --faq-card-shadow: 8px 8px 0 rgba(10, 20, 40, 0.08);
  --faq-card-shadow-dark: 8px 8px 0 rgba(10, 20, 40, 0.22);
  --faq-silver-hairline: rgba(192, 199, 209, 0.35);
}

/* ---- 顶部 Hero / 框景导语 ---- */
.page-faq .faq-hero {
  background: linear-gradient(135deg, var(--deep-space) 0%, var(--deep-space-2) 100%);
  color: var(--paper-white);
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--faq-silver-hairline);
}

.page-faq .faq-hero__body {
  max-width: 900px;
  padding-top: 1.5rem;
  border-left: 4px solid var(--vibrant-orange);
  padding-left: 1.25rem;
}

.page-faq .faq-hero h1 {
  font-size: clamp(2.1rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 1rem 0 1.25rem;
}

.page-faq .faq-hero__lead {
  font-size: clamp(1rem, 1.2vw, 1.25rem);
  line-height: 1.8;
  color: var(--warm-gray);
  max-width: 760px;
  margin: 0;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--faq-silver-hairline);
}

.page-faq .faq-hero__meta .note {
  color: var(--light-blue);
  margin: 0;
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--light-blue);
}

.page-faq .faq-hero .breadcrumb span[aria-current="page"] {
  color: var(--paper-white);
}

/* ---- 页面统一 eyebrow 强调色 ---- */
.page-faq .faq-hero .eyebrow,
.page-faq .faq-category .eyebrow,
.page-faq .faq-answer-group .eyebrow,
.page-faq .faq-contact-card .eyebrow,
.page-faq .faq-steps .eyebrow,
.page-faq .faq-related .eyebrow {
  color: var(--vibrant-orange);
}

/* ---- 分类导览 ---- */
.page-faq .faq-category {
  background: var(--deep-space-2);
  color: var(--paper-white);
  padding: 4rem 0 4.5rem;
}

.page-faq .faq-category__grid {
  display: grid;
  gap: 2.5rem;
}

.page-faq .faq-category__intro {
  max-width: 680px;
  color: var(--metallic-silver);
  line-height: 1.8;
  margin: 0.75rem 0 0;
}

.page-faq .faq-category__cards {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.page-faq .faq-cat-card {
  background: rgba(10, 20, 40, 0.45);
  border: 1px solid var(--metallic-silver);
  padding: 1.4rem;
  margin: 0;
  position: relative;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-cat-card:hover {
  border-color: var(--vibrant-orange);
  background: rgba(15, 34, 71, 0.55);
}

.page-faq .faq-cat-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.page-faq .faq-cat-card__num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--vibrant-orange);
}

.page-faq .faq-cat-card__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--metallic-silver);
  color: var(--light-blue);
}

.page-faq .faq-cat-card__label:first-of-type {
  border-color: var(--vibrant-orange);
  color: var(--vibrant-orange);
}

.page-faq .faq-cat-card h3 {
  margin: 1.25rem 0 0.4rem;
  font-size: 1.35rem;
}

.page-faq .faq-cat-card h3 a {
  color: var(--paper-white);
  text-decoration: none;
}

.page-faq .faq-cat-card h3 a:hover {
  color: var(--vibrant-orange);
}

.page-faq .faq-cat-card p {
  margin: 0;
  color: var(--light-blue);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq-category__media {
  border: 1px solid var(--metallic-silver);
  padding: 0.5rem;
  background: rgba(245, 247, 250, 0.04);
  margin: 0;
}

/* ---- 主区：目录 + 答案卡 ---- */
.page-faq .faq-main {
  padding: 3.5rem 0 1rem;
}

.page-faq .faq-main__grid {
  display: grid;
  gap: 3rem;
}

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

.page-faq .faq-toc {
  border-top: 1px solid var(--metallic-silver);
  padding-top: 1.5rem;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__list::-webkit-scrollbar {
  height: 4px;
  background: transparent;
}

.page-faq .faq-toc__list::-webkit-scrollbar-thumb {
  background: var(--metallic-silver);
}

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

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.65rem 1rem;
  background: rgba(245, 247, 250, 0.06);
  border: 1px solid transparent;
  color: var(--paper-white);
  text-decoration: none;
  font-size: 0.95rem;
  white-space: nowrap;
}

.page-faq .faq-toc__list a span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--light-blue);
}

.page-faq .faq-toc__list a em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--vibrant-orange);
}

.page-faq .faq-toc__list a:hover {
  border-color: var(--vibrant-orange);
  background: rgba(249, 115, 22, 0.08);
}

/* ---- 侧栏联系卡 ---- */
.page-faq .faq-contact-card {
  background: var(--paper-white);
  color: var(--ink-black);
  margin-top: 2rem;
  padding: 1.7rem;
  border: 1px solid var(--warm-gray);
  box-shadow: var(--faq-card-shadow-dark);
}

.page-faq .faq-contact-card h2 {
  margin: 0.4rem 0 1rem;
  font-size: 1.6rem;
}

.page-faq .faq-contact-card__list {
  margin: 0;
}

.page-faq .faq-contact-card__list div {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--warm-gray);
}

.page-faq .faq-contact-card__list dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748B;
}

.page-faq .faq-contact-card__list dd {
  margin: 0.25rem 0 0;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
}

.page-faq .faq-contact-card__list dd a {
  color: var(--brand-blue);
}

.page-faq .faq-contact-card .note {
  display: block;
  margin-top: 1rem;
  color: #475569;
}

.page-faq .faq-contact-card .btn {
  margin-top: 1.25rem;
  width: 100%;
}

/* ---- 答案组与答案卡 ---- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-answer-group {
  padding: 2.5rem 0 1rem;
  scroll-margin-top: 6rem;
}

.page-faq .faq-group-head {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--faq-silver-hairline);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  color: var(--paper-white);
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
}

.page-faq .faq-group-head__meta {
  margin: 0;
  color: var(--light-blue);
  font-size: 0.95rem;
}

.page-faq .faq-card {
  background: var(--paper-white);
  color: var(--ink-black);
  border: 1px solid var(--warm-gray);
  padding: 1.6rem 1.5rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--faq-card-shadow);
  position: relative;
}

.page-faq .faq-card__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.page-faq .faq-card__meta .note {
  color: var(--vibrant-orange);
  margin: 0;
  font-size: 0.8rem;
}

.page-faq .faq-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.3rem;
  line-height: 1.35;
}

.page-faq .faq-card p {
  margin: 0.5rem 0 0;
  color: #334155;
  line-height: 1.8;
}

.page-faq .faq-card .note {
  display: block;
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--warm-gray);
  color: #64748B;
}

/* ---- 自定义标签 ---- */
.page-faq .faq-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.6rem;
  border: 1px solid transparent;
  display: inline-block;
  line-height: 1.4;
}

.page-faq .faq-tag--orange {
  background: var(--vibrant-orange);
  color: var(--ink-black);
  border-color: var(--vibrant-orange);
}

.page-faq .faq-tag--silver {
  background: transparent;
  color: #64748B;
  border-color: var(--warm-gray);
}

/* ---- 步骤教学 ---- */
.page-faq .faq-steps {
  background: var(--paper-white);
  color: var(--ink-black);
  padding: 4rem 0 3.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--warm-gray);
  border-bottom: 1px solid var(--warm-gray);
}

.page-faq .faq-steps__grid {
  display: grid;
  gap: 2.5rem;
}

.page-faq .faq-steps__lead {
  max-width: 680px;
  color: #475569;
  margin: 0.75rem 0 0;
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.page-faq .faq-steps__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--warm-gray);
}

.page-faq .faq-steps__step-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--deep-space);
  line-height: 1;
  padding-top: 0.3rem;
}

.page-faq .faq-steps__list h3 {
  margin: 0 0 0.3rem;
  font-size: 1.1rem;
}

.page-faq .faq-steps__list p {
  margin: 0;
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq-steps__media {
  border: 1px solid var(--deep-space-2);
  padding: 0.5rem;
  background: var(--warm-gray);
  margin: 0;
}

.page-faq .faq-steps .btn {
  margin-top: 1.5rem;
}

/* ---- 相关专题 ---- */
.page-faq .faq-related {
  padding: 3.5rem 0 4.5rem;
  color: var(--paper-white);
}

.page-faq .faq-related__head {
  margin-bottom: 1.5rem;
}

.page-faq .faq-related__head h2 {
  margin: 0.4rem 0 0;
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
}

.page-faq .faq-related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-silver-hairline);
}

.page-faq .faq-related__item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--faq-silver-hairline);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
}

.page-faq .faq-related__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--light-blue);
  border: 1px solid var(--faq-silver-hairline);
  padding: 0.25rem 0.6rem;
}

.page-faq .faq-related__item a {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--paper-white);
  text-decoration: none;
  margin-top: 0.35rem;
}

.page-faq .faq-related__item a::after {
  content: " →";
  color: var(--vibrant-orange);
  font-weight: 400;
}

.page-faq .faq-related__item a:hover {
  color: var(--vibrant-orange);
}

.page-faq .faq-related__item p {
  margin: 0;
  color: var(--light-blue);
  line-height: 1.7;
  max-width: 720px;
}

/* ---- 图片通用 ---- */
.page-faq .faq-category__media img,
.page-faq .faq-steps__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---- 平板及以上 ---- */
@media (min-width: 700px) {
  .page-faq .faq-hero__body {
    padding-left: 2rem;
  }

  .page-faq .faq-category__cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

/* ---- 桌面 ---- */
@media (min-width: 900px) {
  .page-faq .faq-category__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }

  .page-faq .faq-cat-card:nth-child(even) {
    transform: translateY(14px);
  }

  .page-faq .faq-main__grid {
    grid-template-columns: minmax(240px, 280px) 1fr;
    align-items: start;
    gap: 3.5rem;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 9rem;
  }

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

  .page-faq .faq-toc__list li {
    flex: none;
  }

  .page-faq .faq-toc__list a {
    border-bottom: 1px solid var(--faq-silver-hairline);
    background: none;
    white-space: normal;
    padding: 0.9rem 0;
  }

  .page-faq .faq-contact-card {
    margin-top: 3rem;
  }

  .page-faq .faq-answer-group {
    padding: 3.5rem 0 1.5rem;
  }

  .page-faq .faq-answer-group .faq-card:nth-of-type(even) {
    margin-left: 2rem;
  }

  .page-faq .faq-card {
    padding: 2rem 2.2rem 1.8rem;
    margin-bottom: 2rem;
  }

  .page-faq .faq-steps__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3.5rem;
  }
}