:root{
  --faq-bg:#eef2f7;
  --faq-ink:#0f172a;
  --faq-sub:#475569;
  --faq-line:#d8e0ea;
  --faq-card:#ffffff;
  --faq-soft:#f8fafd;
  --faq-brand:#0f766e;
  --faq-brand-2:#0369a1;
  --faq-shadow:0 14px 34px rgba(15, 23, 42, 0.08);
  --faq-shadow-strong:0 20px 42px rgba(15, 23, 42, 0.12);
}

html, body{
  background:
    radial-gradient(1200px 400px at -10% -20%, rgba(15,118,110,0.11), transparent 52%),
    radial-gradient(1200px 420px at 110% -20%, rgba(3,105,161,0.10), transparent 54%),
    var(--faq-bg);
}

.wrap{
  max-width:1280px;
  padding-top:28px;
  padding-bottom:48px;
}

.top{
  border:1px solid var(--faq-line);
  border-radius:24px;
  background:rgba(255,255,255,0.82);
  backdrop-filter:blur(8px);
  box-shadow:var(--faq-shadow);
  padding:18px 20px;
  display:grid;
  gap:16px;
}

.top-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}

.brand .t1{
  color:var(--faq-ink);
  font-size:34px;
  letter-spacing:-0.02em;
}

.brand .t2{
  color:#64748b;
  font-size:12px;
  margin-top:4px;
}

.top-actions-right .pill-btn,
.faq-actions .pill-btn{
  text-decoration:none;
}

.top-hero{
  border:1px solid #d7e3ef;
  border-radius:22px;
  background:linear-gradient(130deg, rgba(255,255,255,0.98), rgba(247,251,255,0.92));
  padding:26px;
  display:grid;
  grid-template-columns:minmax(0, 1.55fr) minmax(260px, 1fr);
  gap:18px;
  align-items:start;
}

.top-hero-main{
  min-width:0;
}

.top-hero-side{
  min-width:0;
  border:1px solid #d6e3f0;
  border-radius:16px;
  background:#f8fbff;
  padding:14px;
}

.hero-side-title{
  margin:0 0 10px;
  font-size:13px;
  font-weight:800;
  color:#0f4d6f;
  letter-spacing:.06em;
}

.top-hero h1{
  margin:0;
  font-size:42px;
  line-height:1.14;
  letter-spacing:-0.02em;
  color:var(--faq-ink);
}

.top-hero p{
  margin:14px 0 0;
  color:var(--faq-sub);
  line-height:1.82;
  font-size:16px;
}

.faq-hero-tags{
  margin-top:0;
  display:flex;
  flex-wrap:wrap;
  gap:9px;
}

.faq-hero-tags a{
  display:inline-flex;
  align-items:center;
  border:1px solid #c8d7e6;
  border-radius:999px;
  padding:8px 12px;
  color:#0f4d6f;
  font-weight:700;
  font-size:12px;
  text-decoration:none;
  background:#f5fbff;
}

.faq-hero-tags a:hover{
  border-color:#74a9ce;
  background:#ebf7ff;
}

#ai-summary{
  margin-top:18px;
  padding:14px 16px;
  border-radius:14px;
  border:1px dashed #c9d7e5;
  background:#f8fbff;
}

#ai-summary p{
  margin:0;
  font-size:13px;
  color:#5b6b7d;
}

.faq-shell{
  margin-top:20px;
  display:grid;
  grid-template-columns:300px 1fr;
  gap:16px;
  align-items:start;
}

.faq-sidebar{
  position:sticky;
  top:18px;
  display:grid;
  gap:12px;
}

.faq-side-card{
  border:1px solid var(--faq-line);
  border-radius:20px;
  background:#ffffff;
  padding:16px;
  box-shadow:var(--faq-shadow);
}

.faq-side-title{
  margin:0 0 8px;
  font-size:15px;
  font-weight:800;
  color:#0f172a;
}

.faq-side-card a{
  display:block;
  margin-top:8px;
  border-radius:12px;
  padding:9px 11px;
  font-size:14px;
  font-weight:700;
  color:#1e3a5f;
  text-decoration:none;
  background:#f6f9fd;
  border:1px solid #d6e2ef;
}

.faq-side-card a:hover{
  border-color:#7ab0d3;
  background:#eef7ff;
}

.faq-side-copy{
  margin:0;
  font-size:13px;
  color:#64748b;
  line-height:1.7;
}

.faq-side-card a.faq-side-cta{
  margin-top:12px;
  text-align:center;
  border:none;
  color:#ffffff;
  background:linear-gradient(135deg, var(--faq-brand), var(--faq-brand-2));
}

.faq-main{
  display:grid;
  gap:14px;
}

.faq-group{
  border:1px solid var(--faq-line);
  border-radius:24px;
  background:#ffffff;
  box-shadow:var(--faq-shadow);
  padding:18px;
}

.faq-group > header{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}

.faq-group > header p{
  margin:0;
  width:32px;
  height:32px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg, #0f766e, #0369a1);
  color:#ffffff;
  font-weight:800;
  font-size:13px;
}

.faq-group > header h2{
  margin:0;
  font-size:19px;
  color:#0f172a;
}

.faq-list{
  display:grid;
  gap:10px;
}

.faq-list details{
  border:1px solid #dce5ef;
  border-radius:16px;
  background:#fbfdff;
  padding:12px 14px;
  transition:border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

.faq-list details:hover{
  border-color:#96bad8;
  background:#f6fbff;
}

.faq-list details[open]{
  border-color:#78aacd;
  background:#ffffff;
  box-shadow:var(--faq-shadow-strong);
}

.faq-list summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  font-size:17px;
  font-weight:800;
  color:#0f172a;
  line-height:1.55;
  padding-right:32px;
}

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

.faq-list summary::before{
  content:"";
  display:inline-block;
  width:10px;
  height:10px;
  margin-right:10px;
  border-radius:999px;
  background:linear-gradient(135deg, #0f766e, #0ea5e9);
  vertical-align:middle;
}

.faq-list summary::after{
  content:"+";
  position:absolute;
  right:0;
  top:0;
  width:24px;
  height:24px;
  border-radius:999px;
  border:1px solid #cbd9e7;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#0f5f88;
  font-size:18px;
  font-weight:700;
  background:#f2f8ff;
}

.faq-list details[open] summary::after{
  content:"–";
  color:#ffffff;
  border-color:transparent;
  background:linear-gradient(135deg, #0f766e, #0ea5e9);
}

.faq-answer{
  margin-top:12px;
  padding-top:11px;
  border-top:1px dashed #d4deea;
  font-size:15px;
  line-height:1.9;
  color:#334155;
}

.faq-note{
  margin-top:16px;
  border:1px dashed #bfd0e0;
  border-radius:14px;
  background:#f8fbff;
  color:#5a6d83;
  font-size:14px;
  padding:12px 14px;
}

.faq-actions{
  margin-top:12px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.faq-actions .pill-btn{
  border:none;
  padding:12px 16px;
  border-radius:999px;
  font-weight:800;
  color:#ffffff;
  background:linear-gradient(135deg, var(--faq-brand), var(--faq-brand-2));
  box-shadow:0 10px 24px rgba(15,118,110,0.25);
}

@media (max-width: 1100px){
  .faq-shell{grid-template-columns:1fr;}
  .faq-sidebar{position:relative;top:auto;grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width: 840px){
  .top-hero{padding:22px 18px;border-radius:18px;}
  .top-hero{
    grid-template-columns:1fr;
  }
  .top-hero h1{font-size:34px;}
  .top-hero p{font-size:15px;line-height:1.8;}
  .faq-group{padding:14px;border-radius:18px;}
  .faq-list summary{font-size:16px;}
}

@media (max-width: 640px){
  .top-head{
    flex-direction:column;
    align-items:flex-start;
  }
  .top-actions-right{
    width:100%;
    justify-content:flex-start;
  }
  .top{border-radius:16px;padding:12px;}
  .brand .t1{font-size:26px;}
  .top-hero{padding:18px 14px;border-radius:14px;}
  .top-hero h1{font-size:28px;}
  .top-hero-side{padding:12px;}
  .faq-shell{gap:12px;}
  .faq-sidebar{grid-template-columns:1fr;}
  .faq-group > header h2{font-size:17px;}
  .faq-list details{padding:10px 11px;border-radius:13px;}
  .faq-list summary{font-size:15px;line-height:1.55;}
  .faq-answer{font-size:14px;line-height:1.8;}
}

@media (prefers-reduced-motion: no-preference){
  .top,
  .top-hero,
  .faq-side-card,
  .faq-group,
  .faq-note,
  .faq-actions{
    animation:faqMotionSurfaceIn 560ms cubic-bezier(.05,.7,.1,1) both;
  }

  .top-hero{animation-delay:70ms;}
  .faq-side-card:nth-child(1){animation-delay:120ms;}
  .faq-side-card:nth-child(2){animation-delay:170ms;}
  .faq-group:nth-child(1){animation-delay:120ms;}
  .faq-group:nth-child(2){animation-delay:170ms;}
  .faq-group:nth-child(3){animation-delay:220ms;}
  .faq-group:nth-child(4){animation-delay:270ms;}
  .faq-note{animation-delay:320ms;}
  .faq-actions{animation-delay:360ms;}

  .faq-hero-tags a,
  .faq-side-card a,
  .faq-actions .pill-btn,
  .faq-list details,
  .faq-list summary::after{
    transition:
      transform 160ms cubic-bezier(.22,.61,.36,1),
      box-shadow 260ms cubic-bezier(.22,.61,.36,1),
      border-color 160ms ease,
      background-color 160ms ease,
      color 160ms ease;
  }

  .faq-hero-tags a:hover,
  .faq-side-card a:hover,
  .faq-actions .pill-btn:hover{
    transform:translateY(-1px);
  }

  .faq-hero-tags a:active,
  .faq-side-card a:active,
  .faq-actions .pill-btn:active{
    transform:translateY(1px) scale(.99);
  }

  .faq-list details:hover{
    transform:translateY(-1px);
  }

  .faq-list details[open]{
    animation:faqMotionQuestionOpen 320ms cubic-bezier(.16,1,.3,1) both;
  }

  .faq-list details[open] .faq-answer{
    animation:faqMotionAnswerReveal 300ms cubic-bezier(.05,.7,.1,1) both;
  }

  .faq-list details[open] summary::after{
    transform:rotate(180deg);
  }
}

@keyframes faqMotionSurfaceIn{
  from{
    opacity:0;
    transform:translateY(12px) scale(.992);
  }
  to{
    opacity:1;
    transform:translateY(0) scale(1);
  }
}

@keyframes faqMotionQuestionOpen{
  from{transform:translateY(2px) scale(.998);}
  to{transform:translateY(0) scale(1);}
}

@keyframes faqMotionAnswerReveal{
  from{
    opacity:0;
    transform:translateY(8px);
  }
  to{
    opacity:1;
    transform:translateY(0);
  }
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration:1ms !important;
    animation-iteration-count:1 !important;
    scroll-behavior:auto !important;
    transition-duration:1ms !important;
  }
}