.avi2025{
  --blue:#0b4aa8;
  --blueDark:#083a86;
  --blueLight:#1266d7;

  --bg:#eeeeee;
  --card:#ffffff;
  --ink:#0b1220;
  --muted:#5b6476;

  --radius:10px;
  --shadow:0 18px 40px rgba(0,0,0,.22);

  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color:var(--ink);
}

.avi2025 *{ box-sizing:border-box; }
.avi2025 img{ max-width:100%; display:block; }
.avi2025 [id]{ scroll-margin-top: 90px; }

/* independent container (works even if bootstrap missing) */
.avi2025 .av-container{
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 16px;
  padding-right: 16px;
}

/* ---------------- HERO ---------------- */
.avi2025 .hero{
  position:relative;
  color:#fff;
  padding: clamp(2.2rem, 4.8vw, 3.6rem) 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.58) 0%, rgba(0,0,0,.38) 55%, rgba(0,0,0,.18) 100%),
    url("img/aviation_sky_bg.jpg") center/cover no-repeat;
  background-color:#1b2d46;
}

.avi2025 .hero-grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.5rem, 3.8vw, 3rem);
  align-items:start;
}

.avi2025 .hero h1{
  font-weight: 300;
  line-height: 1.05;
  margin: 0 0 1rem 0;
  font-size: clamp(2.2rem, 4.6vw, 3.7rem);
  text-shadow: 0 2px 18px rgba(0,0,0,.45);
}

.avi2025 .hero-kicker{
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1.2rem;
  color: rgba(255,255,255,.92);
  text-shadow: 0 2px 16px rgba(0,0,0,.35);
}

.avi2025 .hero p{
  margin: 0 0 1rem 0;
  max-width: 70ch;
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,.9);
  text-shadow: 0 2px 14px rgba(0,0,0,.30);
}

.avi2025 .hero-note{
  margin-top: .2rem;
  padding-top: .4rem;
  border-top: 1px solid rgba(255,255,255,.2);
  max-width: 70ch;
  font-size: 1rem;
  color: rgba(255,255,255,.92);
}

.avi2025 .hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.75rem;
  margin-top: 1.3rem;
}

/* Buttons */
.avi2025 .avbtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55rem;
  text-decoration:none;
  font-weight:700;
  border-radius: 6px;
  padding: .85rem 1.15rem;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.08);
  color:#fff;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.avi2025 .avbtn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.35);
}
.avi2025 .avbtn.primary{
  background: var(--blueLight);
  border-color: rgba(255,255,255,.15);
}
.avi2025 .avbtn.primary:hover{ background: #0d56c5; }
.avi2025 .avbtn.ghost{ background: rgba(255,255,255,.10); }
.avi2025 .avbtn.small{
  padding:.65rem .95rem;
  font-size:.95rem;
}

/* Hero photo frame */
.avi2025 .hero-photo{
  background: rgba(255,255,255,.88);
  padding: 10px;
  border-radius: 6px;
  box-shadow: var(--shadow);
}
.avi2025 .hero-photo img{
  width:100%;
  height:auto;
  border-radius: 4px;
}

.avi2025 .hero-caption{ margin-top: .9rem; }
.avi2025 .caption-pill{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.55rem .85rem;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  font-weight: 650;
  color: rgba(255,255,255,.95);
}

/* ---------------- CATEGORY BAR ---------------- */
.avi2025 .catbar{
  background: var(--blueDark);
  color:#fff;
  padding: 1.05rem 0;
}
.avi2025 .catbar-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:.7rem 1.2rem;
  text-align:center;
}
.avi2025 .catbar-title{ font-weight:800; letter-spacing:.4px; }
.avi2025 .catbar-links{
  display:flex;
  align-items:center;
  gap:.55rem;
  flex-wrap:wrap;
  justify-content:center;
}
.avi2025 .catbar-links a{
  color:#fff;
  text-decoration:none;
  font-weight:650;
  opacity:.95;
}
.avi2025 .catbar-links a:hover{ text-decoration: underline; }
.avi2025 .sep{ opacity:.75; }

/* ---------------- BLOCKS ---------------- */
.avi2025 .block{ background: var(--bg); padding: 3.2rem 0; }
.avi2025 .block.alt{ background:#ffffff; }

.avi2025 .block-head{ margin-bottom: 1.6rem; }
.avi2025 .block-head h2{
  margin: 0 0 .25rem 0;
  font-size: 2rem;
  font-weight: 800;
  color: var(--ink);
}
.avi2025 .block-head p{ margin: 0; color: var(--muted); font-size: 1.05rem; }

/* ---------------- COURSE CARDS ---------------- */
.avi2025 .cards{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.avi2025 .course{
  background: var(--card);
  border: 1px solid rgba(0,0,0,.14);
  border-radius: 6px;
  overflow:hidden;
  box-shadow: 0 10px 22px rgba(0,0,0,.08);
}

.avi2025 .course-media{
  position:relative;
  aspect-ratio: 16 / 9;
  background:#d7dde7;
  overflow:hidden;
}
.avi2025 .course-media img{
  width:100%;
  height:100%;
  object-fit: cover;
}

/* diagonal ribbon */
.avi2025 .ribbon{
  position:absolute;
  top: 14px;
  right: -40px;
  transform: rotate(45deg);
  background: #d72626;
  color:#fff;
  font-weight: 800;
  font-size: .85rem;
  padding: .35rem 2.6rem;
  box-shadow: 0 8px 18px rgba(0,0,0,.25);
}
.avi2025 .ribbon.blue{ background:#0d56c5; }
.avi2025 .ribbon.green{ background:#0f9d58; }

.avi2025 .course-strip{
  display:flex;
  align-items:center;
  justify-content:space-between;
  background: var(--blue);
  color:#fff;
  padding: .7rem .9rem;
  font-weight: 700;
  font-size: .95rem;
}
.avi2025 .strip-left{ display:flex; align-items:center; gap:.55rem; }

.avi2025 .course-body{ padding: 1rem .9rem .8rem; }
.avi2025 .course-body h3{
  margin: 0 0 .4rem 0;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--blueDark);
}
.avi2025 .course-body p{ margin: 0; color: var(--muted); line-height: 1.6; }

.avi2025 .course-actions{
  display:flex;
  align-items:center;
  gap:.6rem;
  padding: 0 .9rem 1rem;
}
.avi2025 .price{ margin-left:auto; font-weight: 900; color: var(--blueDark); }
.avi2025 .price .now{ font-size: 1.05rem; }

/* ---------------- TWO PANELS ---------------- */
.avi2025 .two{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}
.avi2025 .panel{
  background: #ffffff;
  border: 1px solid rgba(0,0,0,.12);
  border-radius: 8px;
  padding: 1.2rem;
}
.avi2025 .panel.highlight{
  border-color: rgba(18,102,215,.28);
  background: linear-gradient(180deg, rgba(18,102,215,.06), rgba(255,255,255,1));
}
.avi2025 .panel h3{ margin: 0 0 .6rem 0; font-weight: 900; color: var(--ink); }
.avi2025 .list{ margin: 0; padding-left: 1.1rem; color: var(--muted); }
.avi2025 .list li{ margin: .35rem 0; }

/* ---------------- MINI GRID ---------------- */
.avi2025 .mini-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}
.avi2025 .mini{
  background:#fff;
  border:1px solid rgba(0,0,0,.12);
  border-radius: 10px;
  padding: 1.1rem;
}
.avi2025 .mini h3{
  margin: 0 0 .45rem 0;
  font-weight: 900;
  color: var(--ink);
  font-size: 1.1rem;
  display:flex;
  gap:.55rem;
  align-items:center;
}
.avi2025 .mini p{ margin: 0; color: var(--muted); line-height: 1.6; }

/* ---------------- CALLOUT ---------------- */
.avi2025 .callout{
  background: var(--blueDark);
  color:#fff;
  border-radius: 12px;
  padding: 1.2rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1rem;
}
.avi2025 .callout-text{ font-weight: 650; opacity: .95; }

/* ---------------- FOOTER ---------------- */
.avi2025 .footer{
  background:#0b1a33;
  color:#cbd5e1;
  padding: 1.6rem 0;
}
.avi2025 .footer-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap: .6rem 1rem;
}
.avi2025 .footer-brand{ font-weight: 900; color:#ffffff; }
.avi2025 .footer-copy{ opacity:.85; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 991.98px){
  .avi2025 .hero-grid{ grid-template-columns: 1fr; }
  .avi2025 .hero-copy{ text-align:center; }
  .avi2025 .hero-actions{ justify-content:center; }
  .avi2025 .hero p, .avi2025 .hero-note{ margin-left:auto; margin-right:auto; }

  .avi2025 .cards{ grid-template-columns: 1fr; }
  .avi2025 .two{ grid-template-columns: 1fr; }
  .avi2025 .mini-grid{ grid-template-columns: 1fr; }

  .avi2025 .catbar-links{
    overflow-x:auto;
    white-space:nowrap;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    padding-bottom: .2rem;
  }
  .avi2025 .sep{ display:none; }
  .avi2025 .catbar-links a{
    display:inline-block;
    padding: .2rem .6rem;
    border: 1px solid rgba(255,255,255,.20);
    border-radius: 999px;
  }

  .avi2025 .callout{
    flex-direction:column;
    align-items:flex-start;
  }
}

@media (max-width: 575.98px){
  .avi2025 .hero{ padding: 2rem 0; }
  .avi2025 .hero h1{ font-size: 2.15rem; }
}