/* ===== 教程与答疑 ===== */
.page-faq {
  --faq-rail-w: 258px;
  --faq-gap: clamp(26px, 4.5vw, 60px);
  display: block;
  background:
    radial-gradient(1100px 520px at 82% -6%, rgba(124, 243, 212, .07), transparent 62%),
    radial-gradient(760px 440px at 4% 20%, rgba(20, 70, 58, .55), transparent 72%),
    var(--bg);
  color: var(--ink);
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  padding-top: clamp(24px, 5vw, 58px);
  padding-bottom: clamp(26px, 4vw, 48px);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .02em;
}

.page-faq .breadcrumbs li {
  color: var(--muted);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

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

.page-faq h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(29px, 6.2vw, 52px);
  line-height: 1.14;
  letter-spacing: -.025em;
  font-weight: 800;
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-facts {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-faq .faq-facts li {
  background: var(--panel);
  padding: 16px 18px;
}

.page-faq .faq-facts b {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-faq .faq-facts span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 左右分屏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-bottom: clamp(52px, 8vw, 104px);
}

.page-faq .faq-rail-inner {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  padding: 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2px;
  counter-reset: rail;
}

.page-faq .faq-rail-list li {
  counter-increment: rail;
  min-width: 0;
}

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
  line-height: 1.45;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.page-faq .faq-rail-list a::before {
  content: "0" counter(rail);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--grid);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--ink);
  background: rgba(124, 243, 212, .07);
  border-left-color: var(--cyan);
}

.page-faq .faq-body {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 5vw, 64px);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: clamp(24px, 3vw, 38px);
  scroll-margin-top: 110px;
}

.page-faq .faq-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
}

.page-faq .faq-sec-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.28;
  letter-spacing: -.015em;
  font-weight: 800;
}

.page-faq .faq-sec-head p {
  grid-column: 2;
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.88);
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  counter-reset: step;
}

.page-faq .faq-steps > li {
  counter-increment: step;
  position: relative;
  padding: 20px 0 20px 54px;
  border-bottom: 1px dashed rgba(46, 107, 87, .6);
}

.page-faq .faq-steps > li:last-child {
  border-bottom: 0;
}

.page-faq .faq-steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 21px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-faq .faq-steps > li::after {
  content: "";
  position: absolute;
  left: 0;
  top: 44px;
  width: 26px;
  height: 1px;
  background: var(--grid);
}

.page-faq .faq-steps h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.55;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 提示带 ---------- */
.page-faq .faq-band {
  margin: 28px 0 0;
  padding: 18px 22px;
  border-radius: var(--radius);
  background: linear-gradient(96deg, var(--orange) 0%, var(--amber) 100%);
  color: var(--bg);
  font-size: 15.5px;
  line-height: 1.72;
  font-weight: 600;
  box-shadow: 0 20px 40px -34px rgba(255, 197, 61, .9);
}

.page-faq .faq-band strong {
  font-weight: 800;
}

/* ---------- 排查清单 ---------- */
.page-faq .faq-checks {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-checks li {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(12, 42, 32, .62);
}

.page-faq .faq-check-key {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-check-key::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 179, 71, .16);
}

.page-faq .faq-checks p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 会员权益分层 ---------- */
.page-faq .faq-rights {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-rights li {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  background: var(--panel);
}

.page-faq .faq-rights-key {
  font-size: 13px;
  letter-spacing: .12em;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-rights-val {
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 尾注 ---------- */
.page-faq .faq-note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--line);
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 243, 212, .4);
  transition: border-color .2s ease;
}

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

/* ---------- 时间读法切换 ---------- */
.page-faq .faq-timetool {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin: 24px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-timetool-copy {
  min-width: 0;
  flex: 1 1 260px;
}

.page-faq .faq-timetool-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-timetool-desc {
  margin: 6px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-timetool .time-toggle {
  flex: 0 0 auto;
  min-width: 132px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-faq .faq-tips {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-tips li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 11px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-contact-item {
  padding: 18px 20px;
  background: var(--panel);
}

.page-faq .faq-contact-key {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-contact-val {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact-val--mono {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: -.01em;
}

.page-faq .faq-contact-hint {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-rights li {
    grid-template-columns: 116px minmax(0, 1fr);
    align-items: baseline;
    gap: 22px;
    padding: 20px 22px;
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-steps > li {
    padding-left: 66px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail-inner {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail-list {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .page-faq .faq-figure {
    margin-top: 30px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-faq .faq-steps > li:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .breadcrumbs a,
  .page-faq .faq-rail-list a,
  .page-faq .faq-note a {
    transition: none;
  }
}