/* =========================================================
   入口排查页 / page-faq
   ========================================================= */

.page-faq {
  --faq-rule: rgba(46, 68, 122, 0.75);
  --faq-card-bg: linear-gradient(180deg, rgba(26, 43, 85, 0.55), rgba(17, 29, 61, 0.88));
  --faq-soft-bg: rgba(17, 29, 61, 0.78);
  background: var(--ink-0);
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.6rem, 4vw, 2.6rem) 0 clamp(2rem, 5vw, 3.6rem);
  background:
    radial-gradient(120% 90% at 10% -12%, rgba(61, 255, 136, 0.13), transparent 56%),
    radial-gradient(95% 85% at 102% -6%, rgba(255, 154, 61, 0.13), transparent 58%),
    var(--ink-0);
}

.page-faq .faq-hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46, 68, 122, 0.3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 68, 122, 0.3) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(118% 88% at 16% -4%, #000 12%, transparent 74%);
  mask-image: radial-gradient(118% 88% at 16% -4%, #000 12%, transparent 74%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 1.1rem;
  font-family: var(--font-sans);
  font-weight: 250;
  font-size: clamp(2.3rem, 7vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--text);
  max-width: 20ch;
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
  line-height: 1.85;
}

/* 首屏快捷入口卡片 */

.page-faq .faq-quick {
  list-style: none;
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-quick-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 0.2rem 0.9rem;
  height: 100%;
  padding: 1.05rem 1.15rem 1.15rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  background: var(--faq-card-bg);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-quick-link:hover,
.page-faq .faq-quick-link:focus-visible {
  border-color: rgba(61, 255, 136, 0.62);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -28px rgba(61, 255, 136, 0.85);
}

.page-faq .faq-quick-link--beta:hover,
.page-faq .faq-quick-link--beta:focus-visible {
  border-color: rgba(255, 154, 61, 0.68);
  box-shadow: 0 20px 40px -28px rgba(255, 154, 61, 0.9);
}

.page-faq .faq-quick-num {
  grid-row: 1 / span 2;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
}

.page-faq .faq-quick-link:nth-child(odd) .faq-quick-num {
  color: var(--link);
}

.page-faq .faq-quick > li:nth-child(2) .faq-quick-num {
  color: var(--orange);
}

.page-faq .faq-quick > li:nth-child(4) .faq-quick-num {
  color: var(--lime-soft);
}

.page-faq .faq-quick-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-quick-sub {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 首屏图片 */

.page-faq .faq-hero-media {
  position: relative;
  margin: clamp(1.8rem, 4vw, 2.8rem) 0 0;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    repeating-linear-gradient(0deg, rgba(46, 68, 122, 0.4) 0 1px, transparent 1px 36px),
    repeating-linear-gradient(90deg, rgba(46, 68, 122, 0.4) 0 1px, transparent 1px 36px),
    var(--ink-1);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 主体：索引 + 面板 ---------- */

.page-faq .faq-body {
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

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

.page-faq .faq-index-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.65rem;
  padding: 0.62rem 0.7rem;
  border-radius: var(--r-sm);
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--text);
  background: rgba(26, 43, 85, 0.72);
  border-left-color: var(--lime);
}

.page-faq .faq-index-num {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-faq .faq-index-text {
  min-width: 0;
  overflow-wrap: break-word;
}

.page-faq .faq-index-count {
  font-size: 0.72rem;
  color: var(--muted);
  opacity: 0.8;
}

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

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  margin-bottom: clamp(2.2rem, 5vw, 3.4rem);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 2rem;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding-bottom: 1rem;
  margin-bottom: 1.3rem;
  border-bottom: 1px dashed rgba(46, 68, 122, 0.95);
}

.page-faq .faq-group-num {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--lime);
}

.page-faq #beta-check .faq-group-num {
  color: var(--orange);
}

.page-faq #data-check .faq-group-num {
  color: var(--link);
}

.page-faq #contact-prep .faq-group-num {
  color: var(--lime-soft);
}

.page-faq .faq-group-copy h2 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
}

.page-faq .faq-group-copy p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 三步排查流程 */

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(46, 68, 122, 0.6);
  border-radius: var(--r-sm);
  background: var(--faq-soft-bg);
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-step-num {
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: rgba(61, 255, 136, 0.14);
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 700;
}

.page-faq .faq-step strong {
  color: var(--text);
  font-weight: 600;
}

/* 测试版示意图 */

.page-faq .faq-beta-media {
  margin: 0 0 1.4rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-1);
}

.page-faq .faq-beta-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-beta-media figcaption {
  padding: 0.7rem 1rem;
  border-top: 1px dashed rgba(46, 68, 122, 0.85);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-md);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(111, 168, 255, 0.55);
}

.page-faq .faq-item[open] {
  border-color: rgba(61, 255, 136, 0.55);
  box-shadow: 0 22px 46px -32px rgba(61, 255, 136, 0.9);
  background: linear-gradient(180deg, rgba(26, 43, 85, 0.72), rgba(17, 29, 61, 0.92));
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: start;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q:hover .faq-q-text {
  color: var(--lime-soft);
}

.page-faq .faq-q-index {
  padding-top: 0.18rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-q-text {
  min-width: 0;
  overflow-wrap: break-word;
  transition: color 0.2s ease;
}

.page-faq .faq-chevron {
  flex: none;
  width: 0.52rem;
  height: 0.52rem;
  margin-top: 0.42rem;
  border-right: 2px solid var(--link);
  border-bottom: 2px solid var(--link);
  transform: rotate(45deg);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-faq .faq-item[open] .faq-chevron {
  transform: rotate(225deg);
  border-color: var(--lime);
}

.page-faq .faq-a {
  padding: 0 1.15rem 1.2rem;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.85;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 66ch;
}

/* ---------- 客服信息卡 ---------- */

.page-faq .faq-contact-card {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
  padding: 1.15rem 1.2rem;
  border: 1px solid rgba(255, 154, 61, 0.42);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255, 154, 61, 0.12), rgba(17, 29, 61, 0.9));
}

.page-faq .faq-contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.2rem;
}

.page-faq .faq-contact-key {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-contact-val {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

/* ---------- 收尾引导 ---------- */

.page-faq .faq-cta {
  display: grid;
  gap: 1.4rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--faq-rule);
  border-radius: var(--r-lg);
  background:
    radial-gradient(95% 140% at 0% 0%, rgba(61, 255, 136, 0.15), transparent 62%),
    radial-gradient(80% 120% at 100% 100%, rgba(255, 154, 61, 0.12), transparent 60%),
    rgba(17, 29, 61, 0.88);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-cta-copy h2 {
  margin: 0.5rem 0 0.6rem;
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}

.page-faq .faq-cta-copy p {
  margin: 0;
  max-width: 60ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-faq .faq-top-link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.15rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-top-link:hover,
.page-faq .faq-top-link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* =========================================================
   响应式
   ========================================================= */

@media (min-width: 620px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact-row {
    grid-template-columns: minmax(7rem, auto) minmax(0, 1fr);
    gap: 0.9rem;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 232px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.5rem;
  }

  .page-faq .faq-quick {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }

  .page-faq .faq-cta-actions {
    justify-content: flex-end;
    max-width: 22rem;
  }

  .page-faq .faq-top-link {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-a {
    padding-left: 3.6rem;
    padding-right: 2.4rem;
  }

  .page-faq .faq-hero-media img {
    aspect-ratio: 21 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick-link,
  .page-faq .faq-chevron,
  .page-faq .faq-item,
  .page-faq .faq-index-link,
  .page-faq .faq-q-text,
  .page-faq .faq-top-link {
    transition: none;
  }

  .page-faq .faq-quick-link:hover,
  .page-faq .faq-quick-link:focus-visible {
    transform: none;
  }
}