:root{
  --blue:#0b4ea2; --blue-d:#08346f; --cyan:#3cc3e3;
  --gold:#b8892b; --gold-l:#e3b95a; --green:#0d3b33;
  --ink:#122033; --mute:#5a6779; --bg:#ffffff; --tint:#f3f7fc; --line:#e2e8f0;
  --r:18px;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}
h1,h2,h3{line-height:1.2}
h2{font-family:'Playfair Display',serif;font-size:clamp(1.7rem,4vw,2.5rem);font-weight:700;color:var(--green);margin-bottom:14px}
h3{font-size:1.05rem}
p+p{margin-top:12px}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}
.eyebrow--gold{color:var(--gold-l)}
.lead{color:var(--mute);font-size:1.02rem;margin-bottom:8px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav__in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand__logo{height:40px;width:auto}
.brand__txt{font-weight:700;font-size:.95rem;line-height:1.15}
.brand__txt small{display:block;font-weight:500;color:var(--mute);font-size:.72rem}
.nav__links{display:flex;align-items:center;gap:24px}
.nav__links a:not(.btn){color:var(--ink);text-decoration:none;font-weight:500;font-size:.93rem}
.nav__links a:not(.btn):hover{color:var(--blue)}
.nav__toggle{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;position:relative}
.nav__toggle span{position:absolute;left:9px;right:9px;height:2px;background:var(--ink);transition:.2s}
.nav__toggle span:first-child{top:15px}.nav__toggle span:last-child{top:23px}
.nav__toggle[aria-expanded=true] span:first-child{top:19px;transform:rotate(45deg)}
.nav__toggle[aria-expanded=true] span:last-child{top:19px;transform:rotate(-45deg)}

/* buttons */
.btn{display:inline-block;background:var(--blue);color:#fff;text-decoration:none;font-weight:600;padding:12px 22px;border-radius:999px;transition:.2s;border:0;cursor:pointer}
.btn:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn--sm{padding:8px 18px;font-size:.9rem}
.btn--gold{background:linear-gradient(135deg,var(--gold-l),var(--gold));color:#2a1d02}
.btn--gold:hover{background:linear-gradient(135deg,#f0c86c,var(--gold))}

/* hero */
.hero{background:linear-gradient(#cfe4f5,#fff 70%)}
.hero__img{width:100%;aspect-ratio:16/9;object-fit:cover;max-height:78vh}
.hero__card{position:relative;margin-top:-56px;background:#fff;border-radius:var(--r);box-shadow:0 18px 50px rgba(8,52,111,.18);padding:22px 26px;display:grid;grid-template-columns:1fr auto auto;gap:24px;align-items:center}
.facts{display:grid;gap:12px}
.fact{display:flex;gap:12px;align-items:center}
.fact svg{width:26px;height:26px;fill:none;stroke:var(--blue);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.fact b{display:block;font-size:.98rem;line-height:1.25}
.fact span{font-size:.82rem;color:var(--mute)}
.count{display:flex;gap:10px}
.count div{width:64px;text-align:center;background:var(--tint);border-radius:12px;padding:8px 0}
.count b{display:block;font-size:1.5rem;font-variant-numeric:tabular-nums;color:var(--blue-d)}
.count span{font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mute)}

/* sections */
.sec{padding:84px 0}
.sec--tint{background:var(--tint)}
.sec--dark{background:radial-gradient(circle at 20% 0,#1a6fd1,var(--blue) 45%,var(--blue-d) 100%);color:#e6f0fb}
.sec--dark h2{color:#fff}
.sec--dark p{margin-bottom:22px;color:#cfe1f6}

.about{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.about p{color:#33445a}
.pills{list-style:none;padding:0;margin-top:22px;display:flex;flex-wrap:wrap;gap:8px}
.pills li{padding:6px 14px;border-radius:999px;background:var(--tint);border:1px solid var(--line);font-size:.85rem;font-weight:600;color:var(--blue-d)}
.poster img{border-radius:var(--r);box-shadow:0 18px 50px rgba(8,52,111,.22);max-width:400px;margin-inline:auto}

/* speakers */
.grid{display:grid;gap:20px;margin-top:28px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.sp{background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:0 6px 24px rgba(8,52,111,.08);display:flex;flex-direction:column;transition:.25s}
.sp:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(8,52,111,.16)}
.sp__ph{display:block;width:100%;aspect-ratio:1;object-fit:cover;object-position:top;background:#fff}
.sp__tx{padding:16px 18px 20px}
.sp__tx p{font-size:.85rem;color:var(--mute);margin-top:6px}
.sp__topic{font-style:italic;color:var(--blue-d)!important}
.sp--big{flex-direction:row}
.sp--big .sp__ph{width:44%;flex:none;height:auto}
.sp--big h3{font-size:1.25rem}
.sp--big .sp__tx{align-self:center}
.tag{display:inline-block;background:linear-gradient(135deg,var(--gold-l),var(--gold));color:#2a1d02;font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:8px}
.panel-title{margin-top:44px;background:var(--blue);color:#fff;border-radius:12px;padding:14px 20px;text-align:center}
.panel-title span{display:block;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;opacity:.8}

/* timeline */
.tl{list-style:none;padding:0;margin:32px 0 0;position:relative}
.tl::before{content:"";position:absolute;left:52px;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl li{display:grid;grid-template-columns:104px 1fr auto;gap:0 16px;align-items:start;padding:14px 0;position:relative}
.tl li::before{content:"";position:absolute;left:47px;top:22px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--blue)}
.tl li.hl::before{background:var(--gold);border-color:var(--gold);box-shadow:0 0 0 4px rgba(184,137,43,.2)}
.tl time{font-weight:700;color:var(--blue-d);font-variant-numeric:tabular-nums;padding-top:2px;width:40px}
.tl h3{margin-bottom:2px}
.tl p{color:var(--mute);font-size:.9rem;max-width:62ch}
.tl .hl h3{color:var(--green)}
.dur{font-size:.75rem;font-weight:600;color:var(--mute);background:var(--tint);border-radius:999px;padding:3px 10px;white-space:nowrap}
.tl li.now h3::after{content:"Sedang berlangsung";margin-left:10px;font-size:.68rem;background:#e0413a;color:#fff;padding:2px 8px;border-radius:999px;vertical-align:middle}
.note{margin-top:20px;font-size:.85rem;color:var(--mute)}

/* register */
.reg{display:grid;grid-template-columns:1.3fr .7fr;gap:48px;align-items:center}
.qr{background:#fff;border-radius:var(--r);padding:18px;text-decoration:none;color:var(--ink);text-align:center;max-width:260px;justify-self:center;transition:.2s}
.qr:hover{transform:scale(1.03)}
.qr__img{aspect-ratio:1;background:url(poster.webp) no-repeat;background-size:calc(1131 / var(--w) * 100%) auto;background-position:calc(var(--x) / (1131 - var(--w)) * 100%) calc(var(--y) / (1600 - var(--h)) * 100%);width:100%}
.qr span{display:block;margin-top:10px;font-weight:600;font-size:.88rem}

/* location */
.loc{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}
.loc .lead{margin:16px 0 22px}
.map{border-radius:var(--r);overflow:hidden;box-shadow:0 10px 34px rgba(8,52,111,.14);aspect-ratio:4/3}
.map iframe{width:100%;height:100%;border:0}

.foot{background:#0a1626;color:#9fb0c6;padding:32px 0;font-size:.88rem}
.foot .wrap{display:grid;gap:4px}
.foot b{color:#fff}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:920px){
  .hero__card{grid-template-columns:1fr;margin-top:-24px}
  .count div{flex:1;width:auto}
  .about,.reg,.loc{grid-template-columns:1fr;gap:32px}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .poster{order:-1}
  .poster img{max-width:300px}
}
@media (max-width:680px){
  .nav__toggle{display:block}
  .nav__links{position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 16px;border-bottom:1px solid var(--line);display:none}
  .nav__links.open{display:flex}
  .nav__links a:not(.btn){padding:12px 4px;border-bottom:1px solid var(--line)}
  .nav__links .btn{margin-top:12px;text-align:center}
  .sec{padding:56px 0}
  .grid--2{grid-template-columns:1fr}
  .sp--big{flex-direction:column}
  .sp--big .sp__ph{width:100%}
  .tl::before{left:6px}
  .tl li{grid-template-columns:1fr auto;padding-left:30px}
  .tl li::before{left:1px}
  .tl time{grid-column:1/-1;width:auto}
  .dur{grid-row:2;grid-column:2}
  .tl li div{grid-column:1;grid-row:2}
}
@media (max-width:420px){.grid--4{grid-template-columns:1fr}}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}