:root{
  --bt-author-steel:#1f2937;
  --bt-author-steel-2:#334155;
  --bt-author-blue:#0f4c81;
  --bt-author-blue-2:#123a63;
  --bt-author-orange:#f97316;
  --bt-author-orange-dark:#ea580c;
  --bt-author-green:#15803d;
  --bt-author-bg:#f8fafc;
  --bt-author-soft:#f1f5f9;
  --bt-author-white:#ffffff;
  --bt-author-text:#111827;
  --bt-author-muted:#64748b;
  --bt-author-border:#e5e7eb;
  --bt-author-shadow:0 18px 50px rgba(15,23,42,.10);
  --bt-author-radius:22px;
}

.bt-author-page{
  background:var(--bt-author-bg);
  color:var(--bt-author-text);
  font-size:16px;
  line-height:1.7;
}

.bt-author-page *{box-sizing:border-box;}

.bt-author-wrap{
  width:min(1180px, calc(100% - 32px));
  margin:0 auto;
}

.bt-author-hero{
  position:relative;
  overflow:hidden;
  padding:70px 0 56px;
  background:linear-gradient(135deg,var(--bt-author-blue-2),var(--bt-author-steel));
  color:var(--bt-author-white);
}

.bt-author-hero::before{
  content:"";
  position:absolute;
  inset:auto -120px -180px auto;
  width:420px;
  height:420px;
  border-radius:999px;
  background:rgba(249,115,22,.20);
  filter:blur(4px);
}

.bt-author-hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  gap:36px;
  align-items:center;
}

.bt-author-avatar-card{
  padding:24px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--bt-author-radius);
  background:rgba(255,255,255,.10);
  box-shadow:var(--bt-author-shadow);
  backdrop-filter:blur(12px);
  text-align:center;
}

.bt-author-avatar{
  display:block;
  width:180px;
  height:180px;
  margin:0 auto 16px;
  object-fit:cover;
  border:5px solid rgba(255,255,255,.32);
  border-radius:999px;
  background:var(--bt-author-soft);
}

.bt-author-role,
.bt-author-count{
  margin:0;
  color:rgba(255,255,255,.88);
}

.bt-author-role{
  font-weight:800;
  color:#fff;
}

.bt-author-count{
  margin-top:6px;
  font-size:.95rem;
}

.bt-author-kicker,
.bt-author-section-kicker{
  margin:0 0 8px;
  color:var(--bt-author-orange);
  font-size:.82rem;
  font-weight:900;
  letter-spacing:.08em;
  text-transform:uppercase;
}

.bt-author-hero-content h1{
  margin:0;
  color:#fff;
  font-size:clamp(2rem, 4vw, 3.4rem);
  line-height:1.1;
  letter-spacing:-.04em;
}

.bt-author-summary{
  max-width:880px;
  margin:18px 0 0;
  color:rgba(255,255,255,.90);
  font-size:1.08rem;
}

.bt-author-bio{
  max-width:920px;
  margin-top:18px;
  padding:18px 20px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:18px;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.92);
}

.bt-author-bio p:last-child{margin-bottom:0;}

.bt-author-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}

.bt-author-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:12px 18px;
  border-radius:999px;
  font-weight:800;
  text-decoration:none;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.bt-author-btn:hover{
  transform:translateY(-1px);
  text-decoration:none;
}

.bt-author-btn-primary{
  background:var(--bt-author-orange);
  color:#fff;
  box-shadow:0 12px 26px rgba(249,115,22,.28);
}

.bt-author-btn-primary:hover{
  background:var(--bt-author-orange-dark);
  color:#fff;
}

.bt-author-btn-light{
  border:1px solid rgba(255,255,255,.24);
  background:#fff;
  color:var(--bt-author-blue-2);
}

.bt-author-section{
  padding:54px 0;
}

.bt-author-two-col{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(320px,.65fr);
  gap:22px;
}

.bt-author-panel,
.bt-author-review-note,
.bt-author-cta-box,
.bt-author-empty{
  border:1px solid var(--bt-author-border);
  border-radius:var(--bt-author-radius);
  background:var(--bt-author-white);
  box-shadow:var(--bt-author-shadow);
}

.bt-author-panel{
  padding:28px;
}

.bt-author-panel h2,
.bt-author-section-head h2,
.bt-author-review-note h2,
.bt-author-cta-box h2{
  margin:0;
  color:var(--bt-author-steel);
  font-size:clamp(1.5rem, 2vw, 2rem);
  line-height:1.22;
  letter-spacing:-.025em;
}

.bt-author-panel-accent{
  border-color:rgba(249,115,22,.22);
  background:linear-gradient(180deg,#fff7ed,#fff);
}

.bt-author-topic-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin-top:18px;
}

.bt-author-topic-card{
  padding:14px 15px;
  border:1px solid var(--bt-author-border);
  border-radius:16px;
  background:var(--bt-author-soft);
  color:var(--bt-author-steel);
  font-weight:700;
}

.bt-author-check-list{
  margin:18px 0 0;
  padding:0;
  list-style:none;
}

.bt-author-check-list li{
  position:relative;
  margin:0 0 12px;
  padding-left:28px;
  color:var(--bt-author-steel-2);
}

.bt-author-check-list li::before{
  content:"✓";
  position:absolute;
  left:0;
  top:0;
  color:var(--bt-author-green);
  font-weight:900;
}

.bt-author-review-note-section{
  padding-top:0;
}

.bt-author-review-note,
.bt-author-cta-box{
  display:flex;
  gap:22px;
  align-items:center;
  justify-content:space-between;
  padding:30px;
}

.bt-author-review-note p,
.bt-author-cta-box p{
  margin:12px 0 0;
  color:var(--bt-author-muted);
}

.bt-author-review-note .bt-author-btn-light,
.bt-author-cta-box .bt-author-btn-light{
  border-color:var(--bt-author-border);
  box-shadow:none;
  white-space:nowrap;
}

.bt-author-link-section{padding-top:0;}

.bt-author-socials{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:18px;
}

.bt-author-socials a{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:8px 13px;
  border:1px solid var(--bt-author-border);
  border-radius:999px;
  background:var(--bt-author-soft);
  color:var(--bt-author-blue-2);
  font-weight:800;
  text-decoration:none;
}

.bt-author-section-head{
  max-width:820px;
  margin:0 0 22px;
}

.bt-author-section-head p{
  margin:10px 0 0;
  color:var(--bt-author-muted);
}

.bt-author-post-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}

.bt-author-post-card{
  overflow:hidden;
  border:1px solid var(--bt-author-border);
  border-radius:var(--bt-author-radius);
  background:var(--bt-author-white);
  box-shadow:var(--bt-author-shadow);
}

.bt-author-post-thumb{
  display:flex;
  align-items:center;
  justify-content:center;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,var(--bt-author-blue-2),var(--bt-author-steel));
  color:#fff;
  font-weight:900;
  text-decoration:none;
}

.bt-author-post-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}

.bt-author-post-card:hover .bt-author-post-thumb img{
  transform:scale(1.04);
}

.bt-author-post-body{
  padding:20px;
}

.bt-author-post-meta{
  margin:0 0 8px;
  color:var(--bt-author-muted);
  font-size:.9rem;
}

.bt-author-post-body h3{
  margin:0;
  font-size:1.16rem;
  line-height:1.35;
}

.bt-author-post-body h3 a{
  color:var(--bt-author-steel);
  text-decoration:none;
}

.bt-author-post-body h3 a:hover{color:var(--bt-author-orange-dark);}

.bt-author-post-body p{
  margin:12px 0 0;
  color:var(--bt-author-muted);
}

.bt-author-read-more{
  display:inline-flex;
  margin-top:14px;
  color:var(--bt-author-orange-dark);
  font-weight:900;
  text-decoration:none;
}

.bt-author-pagination{
  margin-top:28px;
}

.bt-author-pagination .nav-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}

.bt-author-pagination .page-numbers{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:40px;
  min-height:40px;
  padding:8px 12px;
  border:1px solid var(--bt-author-border);
  border-radius:999px;
  background:#fff;
  color:var(--bt-author-steel);
  font-weight:800;
  text-decoration:none;
}

.bt-author-pagination .page-numbers.current{
  background:var(--bt-author-blue-2);
  color:#fff;
}

.bt-author-empty{
  padding:24px;
}

.bt-author-empty p{margin:0;color:var(--bt-author-muted);}

.bt-author-faq-section{
  padding-top:0;
}

.bt-author-faq-list{
  display:grid;
  gap:12px;
}

.bt-author-faq-item{
  border:1px solid var(--bt-author-border);
  border-radius:18px;
  background:#fff;
  box-shadow:0 8px 24px rgba(15,23,42,.06);
  overflow:hidden;
}

.bt-author-faq-item summary{
  cursor:pointer;
  padding:18px 20px;
  color:var(--bt-author-steel);
  font-weight:900;
}

.bt-author-faq-answer{
  padding:0 20px 18px;
  color:var(--bt-author-muted);
}

.bt-author-faq-answer p{margin:0;}

.bt-author-cta-section{
  padding-top:0;
  padding-bottom:70px;
}

.bt-author-cta-box{
  background:linear-gradient(135deg,var(--bt-author-steel),var(--bt-author-blue-2));
  color:#fff;
}

.bt-author-cta-box h2{color:#fff;}

.bt-author-cta-box p{color:rgba(255,255,255,.82);}

@media (max-width: 960px){
  .bt-author-hero-grid,
  .bt-author-two-col{
    grid-template-columns:1fr;
  }

  .bt-author-avatar-card{
    max-width:360px;
  }

  .bt-author-post-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media (max-width: 640px){
  .bt-author-wrap{
    width:min(100% - 22px, 1180px);
  }

  .bt-author-hero{
    padding:42px 0 38px;
  }

  .bt-author-avatar{
    width:140px;
    height:140px;
  }

  .bt-author-section{
    padding:38px 0;
  }

  .bt-author-panel,
  .bt-author-review-note,
  .bt-author-cta-box{
    padding:20px;
  }

  .bt-author-topic-grid,
  .bt-author-post-grid{
    grid-template-columns:1fr;
  }

  .bt-author-review-note,
  .bt-author-cta-box{
    align-items:flex-start;
    flex-direction:column;
  }

  .bt-author-actions,
  .bt-author-btn{
    width:100%;
  }
}