/* ============================================================
   答疑中心 /answers/  作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-shadow: 6px 6px 0 rgba(34, 58, 94, 0.55);
  --faq-glow: rgba(53, 242, 160, 0.10);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 18px 0 6px;
  font-family: var(--font-mono);
  font-size: var(--t12);
  letter-spacing: 0.04em;
}
.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur-hover) linear;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--neon);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 6px 0 42px;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}
.page-faq .faq-hero__lead h1 {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}
.page-faq .faq-hero__lede {
  max-width: 34em;
  margin: 0 0 22px;
  font-size: var(--t18);
  line-height: 1.75;
  color: var(--muted);
}
.page-faq .faq-hero__lede strong {
  color: var(--text);
  font-weight: 700;
}
.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 2px solid var(--line);
  border-radius: var(--pill);
  background: var(--night);
  font-size: var(--t14);
  color: var(--muted);
  white-space: nowrap;
}
.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-size: var(--t18);
  font-weight: 700;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--night);
  box-shadow: var(--faq-shadow);
}
.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(79, 214, 255, 0.07) 0 1px,
    rgba(79, 214, 255, 0) 1px 4px
  );
}
.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-faq .faq-hero__media .media__cap {
  position: relative;
  z-index: 1;
  display: block;
  padding: 10px 14px;
  border-top: 2px solid var(--line);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--t12);
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  padding: 8px 0 34px;
}
.page-faq .faq-index__note {
  max-width: 44em;
  margin: 10px 0 0;
  font-size: var(--t16);
  line-height: 1.75;
}
.page-faq .faq-index__grid {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-faq .faq-index__card {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  column-gap: 16px;
  row-gap: 4px;
  padding: 16px 18px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: transform var(--dur-hover) linear,
              border-color var(--dur-hover) linear,
              background var(--dur-hover) linear;
}
.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  background: var(--night);
  border-color: var(--neon);
  transform: translateY(-3px);
}
.page-faq .faq-index__num {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border: 2px solid var(--line);
  border-radius: 6px;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--t22);
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur-hover) linear, border-color var(--dur-hover) linear;
}
.page-faq .faq-index__card:hover .faq-index__num,
.page-faq .faq-index__card:focus-visible .faq-index__num {
  border-color: var(--neon);
  color: var(--neon);
}
.page-faq .faq-index__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--t18);
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.page-faq .faq-index__hint {
  font-family: var(--font-mono);
  font-size: var(--t12);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 通用顺序带 ---------- */
.page-faq .faq-flow {
  padding: 34px 0;
}
.page-faq .faq-flow__head {
  max-width: 46em;
  margin-bottom: 22px;
}
.page-faq .faq-flow__head h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}
.page-faq .faq-flow__head p {
  margin: 0;
  font-size: var(--t16);
  line-height: 1.75;
  color: var(--muted);
}
.page-faq .faq-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.page-faq .faq-flow__label {
  display: grid;
  grid-template-columns: 22px 30px 1fr;
  align-items: start;
  gap: 12px;
  height: 100%;
  padding: 14px 16px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--dur-hover) linear, background var(--dur-hover) linear;
}
.page-faq .faq-flow__label:hover {
  border-color: var(--cyan);
}
.page-faq .faq-flow__num {
  font-family: var(--font-mono);
  font-size: var(--t14);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 2px;
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-flow__text {
  font-size: var(--t16);
  line-height: 1.7;
  color: var(--text);
  transition: color var(--dur-hover) linear;
}
.page-faq .faq-flow__text strong {
  color: var(--neon);
  font-weight: 700;
}
.page-faq .faq-flow__label:has(.faq-flow__check:checked) .faq-flow__text {
  color: var(--muted);
}
.page-faq .faq-flow__label:has(.faq-flow__check:checked) .faq-flow__text strong {
  color: var(--neon-dim);
}

/* ---------- 折叠问题组 ---------- */
.page-faq .faq-group {
  padding: 38px 0;
  border-top: 2px solid var(--line);
}
.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}
.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: var(--t12);
  letter-spacing: 0.18em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}
.page-faq .faq-group__head p {
  margin: 0;
  max-width: 42em;
  font-size: var(--t16);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-acc .accordion__item {
  margin-bottom: 10px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--dur-hover) linear;
}
.page-faq .faq-acc .accordion__item:hover {
  border-color: var(--cyan);
}
.page-faq .faq-q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.page-faq .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  padding: 16px 16px 16px 18px;
  background: transparent;
  border: 0;
  border-left: 4px solid transparent;
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--t16);
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-hover) linear,
              border-color var(--dur-hover) linear;
}
.page-faq .accordion__trigger:hover {
  background: var(--night);
  border-left-color: var(--neon-dim);
}
.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: -2px;
}
.page-faq .accordion__trigger[aria-expanded="true"] {
  background: var(--night);
  border-left-color: var(--neon);
}
.page-faq .accordion__trigger > span:first-child {
  flex: 1 1 auto;
}

.page-faq .accordion__chev {
  position: relative;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border: 2px solid var(--line);
  border-radius: 4px;
  transition: transform var(--dur-hover) linear, border-color var(--dur-hover) linear;
}
.page-faq .accordion__chev::before,
.page-faq .accordion__chev::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 2px;
  border-radius: 1px;
  background: var(--cyan);
  transition: background var(--dur-hover) linear;
}
.page-faq .accordion__chev::before {
  transform: translate(-50%, -50%) rotate(45deg);
}
.page-faq .accordion__chev::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}
.page-faq .accordion__trigger[aria-expanded="true"] .accordion__chev {
  transform: rotate(135deg);
  border-color: var(--neon);
}
.page-faq .accordion__trigger[aria-expanded="true"] .accordion__chev::before,
.page-faq .accordion__trigger[aria-expanded="true"] .accordion__chev::after {
  background: var(--neon);
}

.page-faq .accordion__panel {
  padding: 0 18px 20px;
  border-top: 2px solid var(--line);
  background: var(--ink);
}
.page-faq .faq-answer__lead {
  margin: 16px 0 14px;
  padding: 10px 14px;
  border-left: 4px solid var(--neon);
  background: linear-gradient(90deg, var(--faq-glow), rgba(53, 242, 160, 0) 72%);
  font-size: var(--t16);
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 步骤流程 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  padding: 10px 0;
}
.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 36px;
  bottom: -4px;
  width: 2px;
  background: var(--line);
}
.page-faq .steps__item:last-child::before {
  display: none;
}
.page-faq .steps__marker {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--night);
  font-family: var(--font-mono);
  font-size: var(--t12);
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-faq .steps__body {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-top: 3px;
  font-size: var(--t16);
  line-height: 1.7;
  color: var(--text);
  cursor: pointer;
}
.page-faq .steps__text {
  flex: 1 1 auto;
}
.page-faq .steps__item:has(.steps__check:checked) .steps__text {
  color: var(--muted);
}

/* ---------- 勾选控件 ---------- */
.page-faq .steps__check,
.page-faq .faq-flow__check {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 2px solid var(--line);
  border-radius: 4px;
  background: var(--ink);
  cursor: pointer;
  transition: background var(--dur-hover) linear, border-color var(--dur-hover) linear;
}
.page-faq .steps__check:hover,
.page-faq .faq-flow__check:hover {
  border-color: var(--cyan);
}
.page-faq .steps__check:checked,
.page-faq .faq-flow__check:checked {
  background: var(--neon-dim);
  border-color: var(--neon);
}
.page-faq .steps__check:checked::after,
.page-faq .faq-flow__check:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg);
}
.page-faq .steps__check:focus-visible,
.page-faq .faq-flow__check:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* ---------- 正文链接 ---------- */
.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 214, 255, 0.45);
  transition: color var(--dur-hover) linear, border-color var(--dur-hover) linear;
}
.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
}

/* ---------- 入口与兼容：图文并置 ---------- */
.page-faq .faq-compat__body {
  display: grid;
  gap: 20px;
}
.page-faq .faq-compat__media {
  margin: 0;
  max-width: 300px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--night);
}
.page-faq .faq-compat__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 7;
  object-fit: cover;
}
.page-faq .faq-compat__media .media__cap {
  display: block;
  padding: 9px 12px;
  border-top: 2px solid var(--line);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--t12);
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 仍需要帮助 ---------- */
.page-faq .faq-help {
  padding: 40px 0 56px;
  border-top: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 23, 41, 0.9), rgba(5, 12, 24, 0));
}
.page-faq .faq-help__inner {
  display: grid;
  gap: 26px;
}
.page-faq .faq-help__lead h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}
.page-faq .faq-help__lead p {
  max-width: 34em;
  margin: 0;
  font-size: var(--t16);
  line-height: 1.75;
  color: var(--muted);
}
.page-faq .faq-mail {
  font-family: var(--font-mono);
  font-size: var(--t14);
  color: var(--neon);
  word-break: break-all;
}
.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: start;
  gap: 12px;
  padding: 13px 16px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  font-size: var(--t16);
  line-height: 1.7;
  color: var(--text);
}
.page-faq .faq-help__list .num {
  font-family: var(--font-mono);
  font-size: var(--t14);
  color: var(--cyan);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-help__more {
  margin: 0;
}
.page-faq .faq-help__more .btn {
  display: inline-block;
  text-decoration: none;
}

/* ============================================================
   断点
   ============================================================ */

@media (min-width: 720px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-faq .faq-flow__list {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-faq .faq-compat__body {
    grid-template-columns: 260px 1fr;
    align-items: start;
    gap: 26px;
  }
  .page-faq .faq-compat__media {
    max-width: none;
    position: sticky;
    top: 120px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero {
    padding: 14px 0 54px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 44px;
    align-items: center;
  }
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-faq .faq-flow__list {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-faq .faq-flow__label {
    grid-template-columns: 22px 1fr;
    grid-template-rows: auto auto;
  }
  .page-faq .faq-flow__num {
    grid-column: 2;
    grid-row: 1;
  }
  .page-faq .faq-flow__text {
    grid-column: 2;
    grid-row: 2;
  }
  .page-faq .faq-flow__check {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin-top: 6px;
  }
  .page-faq .faq-compat__body {
    grid-template-columns: 300px 1fr;
    gap: 34px;
  }
  .page-faq .faq-help__inner {
    grid-template-columns: 1fr 1.05fr;
    gap: 40px;
    align-items: start;
  }
  .page-faq .faq-group {
    padding: 48px 0;
  }
}