:root{
  --blue:#0b6fb7;--blue2:#0d9ed9;--navy:#07365d;--gold:#ffca23;--ink:#1c3342;
  --muted:#6a7a85;--soft:#f5f9fc;--line:#dce7ee;--white:#fff;
  --shadow:0 18px 46px rgba(7,54,93,.11)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.65}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.container{width:min(1180px,calc(100% - 38px));margin:auto}
.topbar{background:linear-gradient(90deg,var(--navy),var(--blue));color:#fff;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;gap:18px;align-items:center;padding:8px 0}
.header{background:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid #e9f0f4}
.navrow{min-height:94px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand img{width:440px}
.nav{display:flex;align-items:center;gap:4px}
.nav a,.dropbtn{padding:34px 12px 29px;border:0;background:none;font:inherit;font-size:14px;font-weight:800;cursor:pointer}
.nav a:hover,.dropdown:hover .dropbtn{color:var(--blue)}
.loginbtn{background:var(--blue)!important;color:#fff!important;border-radius:999px;padding:12px 18px!important}
.dropdown{position:relative}
.menu{display:none;position:absolute;top:100%;left:0;min-width:245px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 13px 13px;overflow:hidden}
.dropdown:hover .menu{display:block}
.menu a{display:block;padding:11px 14px;border-bottom:1px solid #edf3f6;font-size:13px}
.menu a:hover{background:#eef7fd}
.menu-toggle{display:none;border:0;background:none;font-size:28px;color:var(--navy)}
.hero{position:relative;overflow:hidden;background:var(--navy)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,39,70,.95),rgba(5,54,90,.76) 48%,rgba(5,54,90,.12) 85%);z-index:1}
.hero .container{position:relative;z-index:2;min-height:575px;display:flex;align-items:center}
.hero-copy{max-width:780px;color:#fff;padding:76px 0}
.eyebrow{text-transform:uppercase;letter-spacing:.19em;font-weight:900;font-size:12px;color:#ffda60}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.13;margin-top:0}
h1{font-size:62px;margin:14px 0 18px}
h2{font-size:40px}
h3{font-size:23px}
.hero p{font-size:18px;max-width:710px;color:#edf6fb}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 21px;border-radius:999px;background:var(--blue);border:1px solid var(--blue);color:#fff;font-weight:800}
.btn.gold{background:var(--gold);border-color:var(--gold);color:#17344c}
.btn.outline{background:transparent;border-color:#fff}
.section{padding:82px 0}
.section.soft{background:var(--soft)}
.section-head{text-align:center;max-width:820px;margin:0 auto 42px}
.section-head p{color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.split img{width:100%;height:450px;object-fit:cover;border-radius:22px;box-shadow:var(--shadow)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 7px 24px rgba(7,54,93,.05)}
.card img{width:100%;height:210px;object-fit:cover}
.card-body{padding:22px}
.card-body p{color:var(--muted)}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef7fd;color:var(--blue);font-size:12px;font-weight:900}
.text-link{font-weight:800;color:var(--blue)}
.agenda{display:grid;gap:15px}
.agenda-item{display:grid;grid-template-columns:95px 1fr;gap:18px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.datebox{background:var(--navy);color:#fff;border-radius:12px;text-align:center;padding:10px}
.datebox b{font-size:26px;display:block}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery figure{margin:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
.gallery img{width:100%;height:210px;object-fit:cover}
.gallery figcaption{padding:12px 14px;color:var(--muted);font-size:13px}
.pagehero{padding:62px 0;background:linear-gradient(120deg,#eaf5fb,#fff);border-bottom:1px solid var(--line)}
.pagehero h1{font-size:48px;margin-bottom:8px}
.breadcrumb{font-size:13px;color:#73858f}
.content{padding:70px 0}
.prose{max-width:940px;margin:auto}
.prose p,.prose li{color:#5b6e78}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.info{background:#fff;border:1px solid var(--line);border-radius:17px;padding:24px}
.prosiding-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.prosiding{border:1px solid var(--line);background:#fff;border-radius:17px;padding:23px}
.login-shell{min-height:650px;display:grid;place-items:center;background:linear-gradient(135deg,#eaf5fb,#fff8d6)}
.login-card{width:min(920px,calc(100% - 30px));display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.login-side{background:linear-gradient(160deg,var(--navy),var(--blue2));color:#fff;padding:36px}
.login-side img{width:230px;background:#fff;border-radius:12px;padding:4px;margin-bottom:24px}
.formbox{padding:36px}
.tabs{display:flex;gap:8px;margin-bottom:18px}
.tab{padding:10px 16px;border-radius:999px;background:#eef5f8;font-weight:800}
.field{display:grid;gap:7px;margin-bottom:14px}
.field input,.field textarea,.field select{width:100%;padding:12px 13px;border:1px solid #cfdde6;border-radius:9px;font:inherit}
.field textarea{min-height:135px}
.notice{background:#eef7fd;border-left:4px solid var(--blue);padding:14px 16px;border-radius:8px;color:#536d7b}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px}
.contact-box,.form-box{border:1px solid var(--line);border-radius:18px;padding:28px;background:#fff}
.cta{background:linear-gradient(rgba(7,54,93,.86),rgba(7,54,93,.86)),url('/assets/images/seminar.jpg') center/cover;color:#fff;text-align:center;padding:78px 20px}
.cta h2{color:#fff;font-size:46px}
.cta p{max-width:720px;margin:0 auto 25px;color:#edf5fa}
.footer{background:var(--navy);color:#d9e7ee;padding:58px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1fr;gap:36px}
.footer .brand img{width:350px;background:#fff;border-radius:9px;padding:4px}
.footer h3{font-family:Arial,sans-serif;color:#fff;font-size:18px}
.footer a{display:block;margin:7px 0}
.footer-bottom{border-top:1px solid #315978;margin-top:36px;padding-top:17px;text-align:center;font-size:12px}
@media(max-width:1060px){
 .nav{display:none;position:absolute;top:94px;left:0;right:0;background:#fff;padding:20px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .nav.open{display:flex}.nav a,.dropbtn{padding:9px 8px;text-align:left;width:100%}.menu{position:static;box-shadow:none;border-radius:0}.menu-toggle{display:block}
 .split,.contact-grid{grid-template-columns:1fr}.cards,.info-grid{grid-template-columns:repeat(2,1fr)}.gallery{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
 .container{width:min(100% - 24px,1180px)}.topbar .container{display:block}.navrow{min-height:78px}.brand img{width:280px}.nav{top:78px}
 h1{font-size:42px}h2{font-size:31px}.hero .container{min-height:500px}.cards,.info-grid,.prosiding-grid,.gallery,.footer-grid,.login-card{grid-template-columns:1fr}
 .section{padding:60px 0}.agenda-item{grid-template-columns:1fr}
}