/* ===== Base ===== */
/* ===== Poster (static) ===== */
.poster-wrap{display:grid; gap:14px}
.poster-img{width:min(900px, 100%); border-radius:12px; border:1px solid rgba(255,255,255,.08); box-shadow:var(--shadow)}
.poster-actions{display:flex; gap:10px}

:root{
  --bg: #0e0a1f;
  --bg-2: #120f2b;
  --text: #eef0f6;
  --muted: #cbd0e6;
  --brand: #8a66ff; /* violet */
  --brand-2: #ff5db1; /* pink */
  --accent: #59d6d6; /* teal */
  --card: #1b1736;
  --card-2: #231d4a;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color:var(--text); background: radial-gradient(1200px 600px at 80% -100px, rgba(138,102,255,.35), transparent 60%),
                      radial-gradient(900px 500px at -20% 0, rgba(255,93,177,.25), transparent 60%),
                      linear-gradient(180deg, var(--bg), var(--bg-2));
}
img{max-width:100%; display:block}
.container{width:min(1100px, 92%); margin-inline:auto}
.small{font-size:.9rem; color:var(--muted)}

/* ===== Nav ===== */
.site-header{position:sticky; top:0; z-index:30; backdrop-filter:saturate(160%) blur(8px)}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 4vw; background:rgba(17,13,41,.6); border-bottom:1px solid rgba(255,255,255,.06);
}
.brand{color:#fff; font-weight:800; text-decoration:none; letter-spacing:.2px; display:flex; align-items:center; gap:10px}
.brand-logo{height:28px; width:auto; display:block; filter:drop-shadow(0 2px 6px rgba(0,0,0,.2))}
.nav-toggle{display:none; background:none; border:1px solid rgba(255,255,255,.25); color:#fff; padding:.4rem .6rem; border-radius:8px}
.nav-links{display:flex; gap:18px; list-style:none; margin:0; padding:0}
.nav a{color:#fff; text-decoration:none}
.btn{background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; padding:.7rem 1rem; border-radius:12px; text-decoration:none; font-weight:700; box-shadow:var(--shadow)}
.btn:hover{filter:brightness(1.05)}
.btn-secondary{background:transparent; border:1.5px solid rgba(255,255,255,.35)}
.btn-sm{padding:.45rem .7rem; font-weight:600}

@media (max-width: 820px){
  .nav-toggle{display:block}
  .nav-links{position:absolute; right:4vw; top:64px; flex-direction:column; background:rgba(17,13,41,.96); padding:14px; border:1px solid rgba(255,255,255,.08); border-radius:12px; display:none}
  .nav-links.open{display:flex}
}

/* ===== Hero ===== */
.hero{padding:72px 0 32px}
.hero-inner{display:grid; grid-template-columns: 1.2fr .8fr; align-items:center; gap:28px}
.eyebrow{color:var(--accent); font-weight:700; letter-spacing:.18em; text-transform:uppercase}
.hero h1{font-size:clamp(1.6rem, 3vw + 1rem, 2.6rem); line-height:1.15; margin:.3rem 0 1rem}
.tagline{font-size:1.1rem; color:#f4d9ff}
.meta{display:flex; gap:18px; padding:0; list-style:none; margin:1rem 0}
.cta{display:flex; gap:12px; flex-wrap:wrap; margin-top:.5rem}
.hero-art{position:relative; height:320px}
.hero-art .circle{position:absolute; inset:auto 0 0 auto; width:280px; height:280px; background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(255,255,255,.05) 60%), linear-gradient(135deg, var(--brand), var(--brand-2)); border-radius:50%; filter:blur(.2px); opacity:.9}
.hero-art .card{position:absolute; left:0; top:30px; width:72%; aspect-ratio:4/3; background:var(--card); border:1px solid rgba(255,255,255,.06); border-radius:16px; box-shadow:var(--shadow); overflow:hidden}
.hero-art .dots{height:26%; background:repeating-linear-gradient(45deg, rgba(255,255,255,.08) 0 6px, transparent 6px 12px)}
.hero-art .bars{height:74%; display:grid; grid-template-columns:repeat(6,1fr); align-items:end; gap:8px; padding:14px}
.hero-art .bars::before, .hero-art .bars::after{content:''}
.hero-art .bars div{height:calc(var(--h,40) * 1%); background:linear-gradient(180deg,var(--accent), transparent); border-radius:6px}
.hero-art .bars div:nth-child(1){--h:65}
.hero-art .bars div:nth-child(2){--h:45}
.hero-art .bars div:nth-child(3){--h:80}
.hero-art .bars div:nth-child(4){--h:55}
.hero-art .bars div:nth-child(5){--h:70}
.hero-art .bars div:nth-child(6){--h:36}
.hero-art .bars{counter-reset:bars 6}
.hero-art .bars{display:grid}
.hero-art .bars{grid-auto-flow:column}
.hero-art .bars{grid-auto-columns:1fr}
.hero-art .bars{grid-template-columns:repeat(6,1fr)}
.hero-art .bars{align-items:end}
.hero-art .bars{gap:8px}
.hero-art .bars{padding:14px}
.hero-art .bars{background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0))}
.hero-art .bars{position:relative}
.hero-art .bars{border-top:1px solid rgba(255,255,255,.06)}
.hero-art .bars{box-shadow:inset 0 6px 18px rgba(0,0,0,.2)}
.hero-art .bars{border-bottom-left-radius:16px; border-bottom-right-radius:16px}
.hero-art .bars > div{background:linear-gradient(180deg, var(--brand-2), transparent)}

@media (max-width: 860px){
  .hero-inner{grid-template-columns: 1fr;}
  .hero-art{order:-1; height:260px}
}

/* ===== Sections ===== */
.section{padding:56px 0}
.section-alt{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,0))}
.section-accent{background:linear-gradient(180deg, rgba(138,102,255,.15), rgba(255,93,177,.08))}
.section-head h2{margin:0 0 .5rem}
.section-head p{color:var(--muted)}

/* ===== Topics ===== */
.grid{display:grid; gap:18px}
.topics{grid-template-columns: repeat(5, 1fr)}
.card{background:linear-gradient(180deg,var(--card),var(--card-2)); border:1px solid rgba(255,255,255,.08); padding:18px; border-radius:14px; box-shadow:var(--shadow)}
.topic h3{margin-top:0}
.topic ul{margin:0; padding-left:1.1rem}
.topic li{margin:.25rem 0; color:var(--muted)}
@media (max-width: 1000px){.topics{grid-template-columns: repeat(3, 1fr)}}
@media (max-width: 700px){.topics{grid-template-columns: repeat(1, 1fr)}}

.timeline{display:grid; gap:12px; border-left:3px solid rgba(255,255,255,.15); margin-left:8px; padding-left:16px}
.tl-item{display:grid; grid-template-columns: 180px 1fr; gap:12px; align-items:center}
.tl-date{color:#ffb6e5; font-weight:700}
@media (max-width:600px){.tl-item{grid-template-columns:1fr}}

 /* ===== Register ===== */
 .register{display:grid; grid-template-columns: 1.2fr .8fr; align-items:center; gap:20px}
 @media (max-width:860px){.register{grid-template-columns:1fr; justify-items:start}}
 
 /* ===== Footer ===== */
 .site-footer{border-top:1px solid rgba(255,255,255,.08); background:rgba(8,6,20,.6)}
 .footer-grid{display:grid; gap:18px; grid-template-columns: 1.2fr .8fr .8fr; padding:24px 0}
 .footer-grid a{color:#cfe6ff}
 .footer-grid ul{list-style:none; margin:0; padding:0}
 .footer-grid li{margin:.25rem 0}
 .copyright{border-top:1px solid rgba(255,255,255,.08); padding:12px 0; text-align:center; color:var(--muted)}

/* ===== Pricing (Fees) ===== */
.pricing{display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:18px}
.price-card{display:grid; gap:8px; align-content:start}
.price-title{font-weight:700; color:#e9e6ff}
.price{font-size:2rem; font-weight:800; background:linear-gradient(135deg,var(--brand),var(--brand-2)); -webkit-background-clip:text; background-clip:text; color:transparent}
@media (max-width:700px){.pricing{grid-template-columns:1fr}}

/* ===== Abstract Template ===== */
.abstract-card{display:grid; grid-template-columns: 1.2fr .8fr; align-items:center; gap:18px}
.abstract-illu{display:grid; place-items:center}
.abstract-illu svg{width:min(260px, 100%); height:auto}
@media (max-width:860px){.abstract-card{grid-template-columns:1fr}}