/* =========================================
   帮助中心 · 页面专属样式
   作用域：.page-faq
   ========================================= */

.page-faq {
  --faq-ink: #0B1026;
  --faq-body: #334155;
  --faq-accent: #B7791F;
  --faq-line: #D6DFEB;
  background:
    radial-gradient(ellipse at 88% 0%, rgba(63, 167, 255, .10) 0%, transparent 48%),
    radial-gradient(ellipse at 8% 38%, rgba(255, 201, 56, .07) 0%, transparent 42%),
    var(--color-bg);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.page-faq .container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1.5rem;
  font-size: .85rem;
  color: var(--color-muted);
}

.page-faq .breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color .2s ease;
}

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

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

/* ---------- 首屏帮助主题区 ---------- */
.page-faq .faq-hero {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2rem, 6vw, 4rem);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .85rem 1.25rem;
  margin-bottom: 1.1rem;
}

.page-faq .faq-eyebrow {
  display: inline-block;
  color: var(--color-gold);
  border: 1px solid rgba(255, 201, 56, .4);
  padding: .3rem .8rem;
  font-size: .8rem;
  letter-spacing: .18em;
}

.page-faq .faq-hero-sync {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--color-success);
  font-family: var(--font-number);
  font-size: .85rem;
}

.page-faq .sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(61, 220, 132, .6);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.5vw, 2.9rem);
  line-height: 1.18;
  color: var(--color-white);
  letter-spacing: .01em;
  max-width: 19em;
  margin: 0 0 1.25rem;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 4.5rem;
  height: 3px;
  margin-top: 1.1rem;
  background: linear-gradient(90deg, var(--color-gold), rgba(255, 201, 56, 0));
}

.page-faq .faq-hero-lead {
  color: var(--color-muted);
  font-size: clamp(.95rem, 1.5vw, 1.05rem);
  line-height: 1.85;
  max-width: 64ch;
  margin: 0 0 1.75rem;
}

.page-faq .faq-hero-metrics {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-hero-metrics li {
  padding: 1.1rem .4rem;
  text-align: center;
}

.page-faq .faq-hero-metrics li + li {
  border-left: 1px solid var(--color-line);
}

.page-faq .faq-hero-metrics strong {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: .2rem;
  font-family: var(--font-number);
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 1.6rem);
  color: var(--color-gold);
  line-height: 1;
}

.page-faq .faq-hero-metrics strong span {
  font-family: var(--font-body);
  font-size: .5em;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0;
}

.page-faq .faq-hero-metrics em {
  display: block;
  font-style: normal;
  margin-top: .5rem;
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--color-muted);
}

.page-faq .faq-hero-figure {
  margin: 0;
  padding: .35rem;
  background: var(--color-bg-deep);
  border: 1px solid var(--color-line);
}

.page-faq .faq-hero-img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 左右分栏 ---------- */
.page-faq .faq-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* ---------- 左侧问题目录 ---------- */
.page-faq .faq-index {
  background: rgba(11, 16, 38, .82);
  border: 1px solid rgba(31, 58, 95, .9);
  padding: 1rem;
}

.page-faq .faq-index-title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: .1em;
  color: var(--color-gold);
  margin: 0 0 .85rem;
  padding-left: .25rem;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 201, 56, .4) rgba(255, 255, 255, .06);
}

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

.page-faq .faq-index-list a {
  display: flex;
  align-items: center;
  gap: .5rem;
  white-space: nowrap;
  padding: .5rem .85rem;
  border: 1px solid rgba(31, 58, 95, 1);
  color: var(--color-muted);
  font-size: .85rem;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  border-color: rgba(255, 201, 56, .8);
  color: var(--color-white);
  background: rgba(255, 201, 56, .05);
}

.page-faq .faq-index-num {
  font-family: var(--font-number);
  font-size: .8rem;
  color: var(--color-gold);
}

/* ---------- 右侧答案区 ---------- */
.page-faq .faq-answer-area {
  display: grid;
  gap: 2.25rem;
  min-width: 0;
}

.page-faq .faq-group {
  counter-reset: faq-count;
  background: var(--color-panel);
  border-top: 4px solid var(--faq-ink);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: 0 1.25rem 2.5rem rgba(0, 0, 0, .25);
  scroll-margin-top: 6rem;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.page-faq .faq-group:target {
  border-top-color: var(--faq-accent);
  box-shadow: 0 0 0 3px rgba(183, 121, 31, .22), 0 1.25rem 2.5rem rgba(0, 0, 0, .25);
}

.page-faq .faq-group-title {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  color: var(--faq-ink);
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--faq-ink);
}

.page-faq .faq-group-title .section-index {
  font-family: var(--font-number);
  font-size: .8em;
  color: var(--faq-accent);
}

.page-faq .faq-group-desc {
  margin: .65rem 0 0;
  padding: .4rem 0 .4rem 1rem;
  border-left: 3px solid var(--faq-accent);
  color: #64748B;
  font-size: .9rem;
  line-height: 1.7;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item:first-of-type {
  margin-top: 1rem;
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 1.05rem 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--faq-ink);
  transition: color .2s ease;
}

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

.page-faq .faq-item summary::before {
  counter-increment: faq-count;
  content: counter(faq-count, decimal-leading-zero);
  font-family: var(--font-number);
  font-weight: 400;
  font-size: .8rem;
  color: var(--faq-accent);
  flex: 0 0 auto;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  width: 1.8rem;
  height: 1.8rem;
  display: grid;
  place-items: center;
  border: 1px solid #CBD5E1;
  font-family: var(--font-number);
  font-size: 1.1rem;
  color: var(--faq-accent);
  line-height: 1;
  margin-left: auto;
  transition: transform .25s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  background: var(--faq-ink);
  color: var(--color-gold);
  border-color: var(--faq-ink);
  transform: rotate(180deg);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--faq-accent);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: 2px;
}

.page-faq .faq-item-body {
  padding: 0 0 .5rem;
  color: var(--faq-body);
  font-size: .95rem;
  line-height: 1.85;
  animation: faq-fade .3s ease;
}

.page-faq .faq-item-body p {
  margin: .6rem 0;
}

.page-faq .faq-item-body a {
  color: #1D6FB8;
  text-decoration: underline;
  text-decoration-color: rgba(29, 111, 184, .35);
  text-underline-offset: 3px;
  transition: color .2s ease, text-decoration-color .2s ease;
}

.page-faq .faq-item-body a:hover,
.page-faq .faq-item-body a:focus-visible {
  color: #155A9C;
  text-decoration-color: var(--faq-accent);
}

/* ---------- 行内图片 ---------- */
.page-faq .faq-inline-figure {
  margin: 1.25rem 0 .5rem;
  padding: .9rem;
  background: #F9FAFC;
  border: 1px solid var(--faq-line);
}

.page-faq .faq-inline-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 300px;
  margin-inline: auto;
}

.page-faq .faq-inline-figure figcaption {
  padding-top: .6rem;
  font-size: .8rem;
  line-height: 1.6;
  text-align: center;
  color: #64748B;
}

/* ---------- 答案反馈 ---------- */
.page-faq .faq-feedback {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin-top: 1rem;
  padding-top: .8rem;
  border-top: 1px dashed #CBD5E1;
  font-size: .82rem;
  color: #64748B;
}

.page-faq .faq-feedback button {
  font-family: var(--font-body);
  border: 1px solid #CBD5E1;
  background: #FFFFFF;
  color: #475569;
  font-size: .78rem;
  line-height: 1;
  padding: .45rem .9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-feedback button:hover,
.page-faq .faq-feedback button:focus-visible {
  border-color: var(--faq-accent);
  color: #92400E;
  background: #FFFBEB;
}

.page-faq .faq-feedback button:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: 2px;
}

/* ---------- 底部服务入口 ---------- */
.page-faq .faq-cta {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(63, 167, 255, .10), rgba(255, 201, 56, .08));
  border: 1px solid rgba(31, 58, 95, .9);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-cta h2 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--color-white);
  margin: 0 0 .4rem;
}

.page-faq .faq-cta p {
  color: var(--color-muted);
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-cta a {
  color: var(--color-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 201, 56, .5);
  padding-bottom: .1rem;
  transition: border-color .2s ease;
}

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

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-inline-figure {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    align-items: center;
  }

  .page-faq .faq-inline-figure img {
    max-width: 220px;
    margin: 0;
  }

  .page-faq .faq-inline-figure figcaption {
    text-align: left;
    padding-top: 0;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-columns {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
    padding: 1.25rem 1rem;
  }

  .page-faq .faq-index-list {
    display: grid;
    gap: .25rem;
  }

  .page-faq .faq-index-list a {
    border-width: 0 0 0 2px;
    border-style: solid;
    border-color: var(--color-line);
    background: transparent;
    white-space: normal;
    border-radius: 0;
    padding: .65rem .8rem;
  }

  .page-faq .faq-index-list a:hover,
  .page-faq .faq-index-list a:focus-visible {
    border-color: var(--color-gold);
    background: rgba(255, 201, 56, .05);
  }
}