:root {
  --bg-900: #030712;
  --bg-800: #071022;
  --bg-700: #0a1a33;
  --cyan-400: #22d3ee;
  --cyan-300: #67e8f9;
  --blue-500: #3b82f6;
  --violet-500: #8b5cf6;
  --ok: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;
  --glow-cyan: 0 0 24px rgba(34, 211, 238, 0.4), 0 0 64px rgba(34, 211, 238, 0.18);
  --glass: rgba(12, 26, 48, 0.42);
  --glass-border: rgba(103, 232, 249, 0.18);
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --txt: #dbeafe;
  --txt-dim: #7f9bc4;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-900);
  color: var(--txt);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

.aurora { position: fixed; inset: 0; z-index: -2; overflow: hidden; background: var(--bg-900); pointer-events: none; }
.aurora::before, .aurora::after {
  content: ""; position: absolute; width: 70vw; height: 70vw; max-width: 900px; max-height: 900px;
  border-radius: 50%; filter: blur(110px); opacity: 0.42; mix-blend-mode: screen;
}
.aurora::before { background: radial-gradient(circle, var(--cyan-400), transparent 62%); top: -18%; left: -12%; animation: drift1 20s ease-in-out infinite alternate; }
.aurora::after { background: radial-gradient(circle, var(--blue-500), transparent 62%); bottom: -22%; right: -14%; animation: drift2 26s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(16vw, 12vh) scale(1.25); } }
@keyframes drift2 { to { transform: translate(-13vw, -9vh) scale(1.18); } }

.grid-h {
  position: fixed; inset: auto 0 0 0; height: 42vh; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(34,211,238,0.10) 1px, transparent 1px), linear-gradient(90deg, rgba(34,211,238,0.10) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(320px) rotateX(62deg);
  transform-origin: bottom center;
  mask-image: linear-gradient(to top, rgba(0,0,0,0.9), transparent 75%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.9), transparent 75%);
  animation: floorRun 12s linear infinite;
}
@keyframes floorRun { to { background-position: 0 56px, 0 0; } }

#stars { position: fixed; inset: 0; z-index: -1; pointer-events: none; }

.grain {
  position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none;
  z-index: 60; opacity: 0.055; mix-blend-mode: overlay;
}

.shell { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

header.nav {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px) saturate(140%);
  background: linear-gradient(180deg, rgba(3,7,18,0.88), rgba(3,7,18,0.55));
  border-bottom: 1px solid rgba(103,232,249,0.10);
}
.nav-in { display: flex; align-items: center; gap: 14px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--txt); font-weight: 700; letter-spacing: 0.02em; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(140deg, rgba(34,211,238,0.22), rgba(59,130,246,0.14));
  border: 1px solid var(--glass-border); box-shadow: var(--glow-cyan);
  font-family: var(--mono); font-size: 13px; color: var(--cyan-300);
}
.brand span small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; color: var(--txt-dim); font-weight: 500; text-transform: uppercase; }
.nav-links { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.nav-links a {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--txt-dim); text-decoration: none; padding: 8px 12px; border-radius: 999px;
  border: 1px solid transparent; transition: color .3s var(--ease-expo), border-color .3s var(--ease-expo), background .3s var(--ease-expo);
}
.nav-links a:hover, .nav-links a.aktif { color: var(--cyan-300); border-color: var(--glass-border); background: rgba(34,211,238,0.06); }

main { padding: 46px 0 80px; }

.hero { text-align: center; padding: 26px 0 40px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--cyan-300);
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--glass-border); background: rgba(34,211,238,0.06);
}
.pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 10px var(--ok); animation: nadi 2.2s ease-in-out infinite; }
@keyframes nadi { 50% { opacity: 0.35; transform: scale(0.8); } }

h1 {
  margin: 20px 0 14px; font-size: clamp(2rem, 7vw, 3.6rem); line-height: 1.08; font-weight: 300;
  letter-spacing: -0.02em;
}
h1 b {
  font-weight: 700;
  background: linear-gradient(100deg, var(--cyan-300), var(--blue-500) 42%, var(--violet-500) 62%, var(--cyan-300));
  background-size: 260% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: holo 9s linear infinite;
}
@keyframes holo { to { background-position: 260% 0; } }

.lead { max-width: 620px; margin: 0 auto; color: var(--txt-dim); font-size: clamp(0.95rem, 3.4vw, 1.06rem); }

.hud {
  position: relative; background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: 16px; padding: 22px; overflow: hidden;
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 18px 50px rgba(2,6,20,0.55);
}
.hud::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(34,211,238,0.09), transparent);
  transform: translateY(-100%); animation: scan 6s var(--ease-expo) infinite;
}
@keyframes scan { to { transform: translateY(100%); } }
.hud > * { position: relative; z-index: 1; }

.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 34px 0 16px; }
.tab {
  font: inherit; cursor: pointer; text-align: left; padding: 14px 16px; border-radius: 14px;
  background: rgba(10,26,51,0.42); border: 1px solid rgba(103,232,249,0.10); color: var(--txt-dim);
  transition: transform .45s var(--ease-spring), border-color .35s var(--ease-expo), color .35s var(--ease-expo), background .35s var(--ease-expo);
}
.tab b { display: block; color: var(--txt); font-size: 0.98rem; }
.tab small { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; }
.tab:hover { transform: translateY(-2px); border-color: var(--glass-border); }
.tab.aktif { color: var(--cyan-300); border-color: rgba(34,211,238,0.42); background: rgba(34,211,238,0.09); box-shadow: var(--glow-cyan); }
.tab.aktif b { color: var(--cyan-300); }

.panel { display: none; }
.panel.aktif { display: block; animation: masuk .6s var(--ease-expo) both; }
@keyframes masuk { from { opacity: 0; transform: translateY(14px); filter: blur(8px); } }

label.lb { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--txt-dim); margin-bottom: 8px; }

.baris { display: flex; gap: 10px; flex-wrap: wrap; }
input[type=tel] {
  flex: 1 1 190px; min-width: 0; font: 500 1.05rem/1.4 var(--mono); letter-spacing: 0.04em;
  color: var(--txt); background: rgba(3,7,18,0.62); border: 1px solid rgba(103,232,249,0.16);
  border-radius: 12px; padding: 14px 16px;
  transition: border-color .3s var(--ease-expo), box-shadow .3s var(--ease-expo);
}
input[type=tel]:focus { outline: none; border-color: rgba(34,211,238,0.55); box-shadow: 0 0 0 3px rgba(34,211,238,0.12); }
input[type=tel]::placeholder { color: #4a6890; }

.btn {
  font: 600 0.95rem/1 inherit; cursor: pointer; padding: 15px 22px; border-radius: 12px; color: #041018;
  border: 1px solid rgba(34,211,238,0.5);
  background: linear-gradient(140deg, var(--cyan-300), var(--blue-500));
  box-shadow: var(--glow-cyan);
  transition: transform .4s var(--ease-spring), filter .3s var(--ease-expo), opacity .3s;
  flex: 0 0 auto;
}
.btn:hover:not(:disabled) { transform: translateY(-2px); filter: brightness(1.08); }
.btn:active:not(:disabled) { transform: translateY(0) scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.btn.hantu { background: transparent; color: var(--txt-dim); border-color: rgba(103,232,249,0.16); box-shadow: none; }
.btn.hantu:hover { color: var(--cyan-300); border-color: var(--glass-border); }

.cek { display: flex; gap: 11px; align-items: flex-start; margin: 16px 0 4px; cursor: pointer; }
.cek input { flex: 0 0 auto; width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--cyan-400); }
.cek span { font-size: 0.9rem; color: var(--txt-dim); }

.nota {
  margin-top: 16px; padding: 13px 15px; border-radius: 12px; font-size: 0.86rem;
  background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.22); color: #a8c4ea;
}
.nota b { color: var(--cyan-300); }

.hasil { margin-top: 18px; }
.kartu {
  border-radius: 14px; padding: 18px; border: 1px solid var(--glass-border); background: rgba(10,26,51,0.4);
  animation: masuk .55s var(--ease-expo) both;
}
.kartu .judul { display: flex; align-items: center; gap: 11px; font-size: 1.05rem; font-weight: 700; }
.kartu .titik { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.kartu p { margin: 10px 0 0; font-size: 0.9rem; color: var(--txt-dim); }
.kartu.ok { border-color: rgba(52,211,153,0.4); background: rgba(52,211,153,0.07); }
.kartu.ok .titik { background: var(--ok); box-shadow: 0 0 14px var(--ok); }
.kartu.bad { border-color: rgba(248,113,113,0.42); background: rgba(248,113,113,0.08); }
.kartu.bad .titik { background: var(--bad); box-shadow: 0 0 14px var(--bad); }
.kartu.warn { border-color: rgba(251,191,36,0.4); background: rgba(251,191,36,0.07); }
.kartu.warn .titik { background: var(--warn); box-shadow: 0 0 14px var(--warn); }

.muat { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 12.5px; color: var(--cyan-300); letter-spacing: 0.06em; }
.putar { width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(34,211,238,0.22); border-top-color: var(--cyan-400); animation: spin .8s linear infinite; flex: 0 0 auto; }
@keyframes spin { to { transform: rotate(360deg); } }

.kode-kotak { text-align: center; padding: 8px 0 4px; }
.kode {
  font-family: var(--mono); font-weight: 700; letter-spacing: 0.14em;
  font-size: clamp(1.9rem, 10vw, 3rem); color: var(--cyan-300);
  text-shadow: 0 0 22px rgba(34,211,238,0.5); word-break: break-word;
  cursor: pointer; user-select: all;
}
.jam { font-family: var(--mono); font-size: 13px; color: var(--txt-dim); letter-spacing: 0.1em; }
.jam b { color: var(--cyan-300); }
.jam.kritis b { color: var(--bad); }

.bar { height: 4px; border-radius: 999px; background: rgba(34,211,238,0.12); overflow: hidden; margin: 14px 0 4px; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan-300), var(--blue-500)); transform-origin: left; transition: transform 1s linear; }

ol.langkah { margin: 16px 0 0; padding-left: 0; list-style: none; counter-reset: s; }
ol.langkah li { position: relative; padding: 0 0 12px 38px; counter-increment: s; font-size: 0.9rem; color: var(--txt-dim); }
ol.langkah li::before {
  content: counter(s); position: absolute; left: 0; top: 0; width: 25px; height: 25px; border-radius: 8px;
  display: grid; place-items: center; font-family: var(--mono); font-size: 11px; color: var(--cyan-300);
  background: rgba(34,211,238,0.09); border: 1px solid var(--glass-border);
}

.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin-top: 20px; }

section.blok { margin-top: 58px; }
section.blok h2 { font-size: clamp(1.3rem, 5vw, 1.9rem); font-weight: 300; margin: 0 0 8px; }
section.blok h2 b { font-weight: 700; color: var(--cyan-300); }
section.blok > p { color: var(--txt-dim); margin: 0 0 18px; max-width: 640px; font-size: 0.95rem; }

.reveal { opacity: 0; transform: translateY(26px); filter: blur(10px); transition: opacity .9s var(--ease-expo), transform .9s var(--ease-expo), filter .9s var(--ease-expo); }
.reveal.in { opacity: 1; transform: none; filter: none; }

dl.faq { margin: 0; }
dl.faq div { border-top: 1px solid rgba(103,232,249,0.10); padding: 15px 0; }
dl.faq dt { font-weight: 600; margin-bottom: 6px; }
dl.faq dd { margin: 0; color: var(--txt-dim); font-size: 0.9rem; }

footer {
  border-top: 1px solid rgba(103,232,249,0.10); padding: 26px 0 40px; margin-top: 60px;
  color: var(--txt-dim); font-size: 0.84rem;
}
footer .fr { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
footer a { color: var(--txt-dim); text-decoration: none; border-bottom: 1px solid transparent; transition: color .3s, border-color .3s; }
footer a:hover { color: var(--cyan-300); border-color: var(--glass-border); }

.pusat { text-align: center; }
.mono-kecil { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--txt-dim); }

@media (max-width: 560px) {
  main { padding: 30px 0 60px; }
  .hud { padding: 17px; border-radius: 14px; backdrop-filter: blur(8px) saturate(130%); }
  .tabs { grid-template-columns: 1fr; }
  .nav-links a { padding: 7px 9px; font-size: 11px; }
  .brand span b { font-size: 0.95rem; }
  .btn { width: 100%; }
  input[type=tel] { flex: 1 1 100%; }
  .aurora::before, .aurora::after { filter: blur(80px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .aurora::before, .aurora::after, .grid-h, .hud::before, h1 b, .pill i, .putar { animation: none !important; }
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  #stars, .grain { display: none; }
}