:root{
  --tt-blue:#0b5cff;
  --tt-navy:#0c2d63;
  --tt-text:#28456d;
  --tt-muted:#617796;
  --tt-border:#d9e4f0;
  --tt-soft:#f7faff;
  --tt-white:#ffffff;
  --tt-shadow:0 16px 38px rgba(18,54,105,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,"Segoe UI",Arial,sans-serif;
  color:var(--tt-text);
  background:#fff;
}
img{max-width:100%;display:block}
a{text-decoration:none}

.tt-doc-banner{
  width:100%;
  background:#0b5cff;
  overflow:hidden;
}
.tt-doc-banner img{
  width:100%;
  height:auto;
  object-fit:contain;
}

.tt-doc-page{
  padding:0 0 72px;
  background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);
}
.tt-doc-container{
  width:min(1180px,calc(100% - 40px));
  margin:0 auto;
}
.tt-doc-breadcrumb{
  display:flex;
  gap:10px;
  align-items:center;
  min-height:54px;
  color:#7a8ba3;
  font-size:13px;
  border-bottom:1px solid #edf2f7;
}
.tt-doc-breadcrumb a{
  color:#607594;
}
.tt-doc-breadcrumb span:last-child{
  color:var(--tt-navy);
  font-weight:700;
}

.tt-doc-header{
  max-width:760px;
  padding:40px 0 32px;
}
.tt-doc-eyebrow,.tt-doc-kicker{
  display:block;
  color:var(--tt-blue);
  font-size:12px;
  font-weight:900;
  letter-spacing:.08em;
}
.tt-doc-header h1{
  margin:8px 0 12px;
  color:var(--tt-navy);
  font-size:clamp(38px,4.3vw,58px);
  line-height:1.06;
  letter-spacing:-.035em;
}
.tt-doc-header p{
  max-width:720px;
  margin:0;
  color:var(--tt-muted);
  font-size:18px;
  line-height:1.6;
}

.tt-doc-products{
  padding-top:22px;
  border-top:1px solid #e5edf6;
}
.tt-doc-section-title{
  display:flex;
  gap:12px;
  align-items:center;
  margin-bottom:24px;
}
.tt-doc-section-title h2{
  margin:0;
  color:var(--tt-navy);
  font-size:19px;
}
.tt-doc-book{
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  color:var(--tt-blue);
  border:2px solid var(--tt-blue);
  border-radius:5px;
  font-weight:900;
}

.tt-doc-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
}
.tt-doc-card{
  overflow:hidden;
  background:var(--tt-white);
  border:1px solid var(--tt-border);
  border-radius:18px;
  box-shadow:var(--tt-shadow);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.tt-doc-card:hover{
  transform:translateY(-3px);
  border-color:#b7cdf1;
  box-shadow:0 20px 46px rgba(18,54,105,.13);
}
.tt-doc-card-visual{
  background:#eef4fb;
  border-bottom:3px solid var(--tt-blue);
  overflow:hidden;
}
.tt-doc-card-visual img{
  width:100%;
  aspect-ratio:320/293;
  object-fit:cover;
}
.tt-doc-card-body{
  min-height:270px;
  display:flex;
  flex-direction:column;
  padding:22px;
}
.tt-doc-card-body h3{
  margin:8px 0 10px;
  color:var(--tt-navy);
  font-size:26px;
  line-height:1.15;
}
.tt-doc-card-body p{
  margin:0;
  color:var(--tt-muted);
  font-size:15px;
  line-height:1.62;
}
.tt-doc-card-body a{
  color:var(--tt-blue);
  font-size:14px;
  font-weight:850;
}
.tt-doc-card-links{
  display:grid;
  gap:10px;
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid var(--tt-border);
}
.tt-doc-card-links a{
  padding-top:0;
}
.tt-doc-card-links a:last-child{
  color:var(--tt-muted);
}

.tt-doc-help{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:20px;
  align-items:center;
  margin-top:42px;
  padding:25px 28px;
  background:#eef4ff;
  border:1px solid #cbdcf8;
  border-radius:18px;
}
.tt-doc-help-icon{
  width:50px;
  height:50px;
  display:grid;
  place-items:center;
  border-radius:50%;
  color:#fff;
  background:var(--tt-blue);
  font-size:21px;
  font-weight:900;
}
.tt-doc-help h2{
  margin:0 0 5px;
  color:var(--tt-navy);
  font-size:19px;
}
.tt-doc-help p{
  margin:0;
  color:var(--tt-muted);
  font-size:14px;
}
.tt-doc-help-button{
  display:inline-flex;
  min-height:44px;
  align-items:center;
  justify-content:center;
  padding:0 18px;
  border-radius:9px;
  color:#fff;
  background:var(--tt-blue);
  font-weight:800;
  font-size:14px;
}

@media(max-width:900px){
  .tt-doc-grid{grid-template-columns:1fr}
  .tt-doc-card{
    display:grid;
    grid-template-columns:minmax(230px,.75fr) 1.25fr;
  }
  .tt-doc-card-visual{
    border-bottom:0;
    border-right:3px solid var(--tt-blue);
  }
  .tt-doc-card-visual img{
    height:100%;
    aspect-ratio:auto;
  }
  .tt-doc-card-body{min-height:240px}
}
@media(max-width:640px){
  .tt-doc-container{width:min(100% - 24px,1180px)}
  .tt-doc-header{padding:30px 0 26px}
  .tt-doc-header p{font-size:16px}
  .tt-doc-grid{gap:16px}
  .tt-doc-card{display:block}
  .tt-doc-card-visual{border-right:0;border-bottom:3px solid var(--tt-blue)}
  .tt-doc-card-visual img{width:100%;height:auto;aspect-ratio:320/293}
  .tt-doc-card-body{min-height:250px}
  .tt-doc-help{
    grid-template-columns:auto 1fr;
    padding:22px;
  }
  .tt-doc-help-button{
    grid-column:1/-1;
    width:100%;
  }
}