:root {
  --bg: #080c14;
  --bg2: #0d1320;
  --bg3: #111827;
  --surface: #161e2e;
  --surface2: #1c2840;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.13);
  --text: #f0f4ff;
  --text2: #8899bb;
  --text3: #55688a;
  --accent: #4f8ef7;
  --accent2: #7b5ea7;
  --accent3: #3dd9a4;
  --accent4: #f5a623;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Onest', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 0%, transparent 70%);
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(8,12,20,0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.nav-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: blink 2.5s ease-in-out infinite;
}
@keyframes blink {
  0%,100% { opacity:1; }
  50% { opacity:0.3; }
}

.nav-links {
  display: flex; gap: 0; list-style: none;
}
.nav-links a {
  text-decoration: none;
  font-size: 13px;
  color: var(--text3);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.nav-btn {
  font-size: 12px;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 7px;
  border: 1px solid rgba(79,142,247,0.5);
  color: var(--accent);
  text-decoration: none;
  transition: all .2s;
}
.nav-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text2); border-radius: 2px;
  transition: all .3s;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  background: rgba(8,12,20,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 1rem 2rem;
  flex-direction: column; gap: 2px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  display: block; padding: 0.75rem 0;
  font-size: 15px; color: var(--text2);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color .2s;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--text); }

/* ─── PROGRESS ─── */
.progress {
  position: fixed;
  top: 60px; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  z-index: 200;
  transition: width .1s linear;
  box-shadow: 0 0 8px var(--accent);
  width: 0%;
}

/* ─── PARTICLES ─── */
.particles { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.particle {
  position: absolute; width: 2px; height: 2px;
  border-radius: 50%; background: var(--accent);
  opacity: 0; animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { opacity:0; transform:translateY(100vh) scale(0); }
  10%  { opacity:0.5; }
  90%  { opacity:0.3; }
  100% { opacity:0; transform:translateY(-5vh) scale(1.5); }
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity:0; transform:translateY(22px); }
  to   { opacity:1; transform:translateY(0); }
}
.reveal {
  opacity:0; transform:translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity:1; transform:translateY(0); }
.d1 { transition-delay:.1s; }
.d2 { transition-delay:.2s; }
.d3 { transition-delay:.3s; }
.d4 { transition-delay:.4s; }

/* ─── HERO ─── */
.hero {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
}
.glow {
  position: absolute; pointer-events: none;
  border-radius: 50%;
}
.glow-1 {
  top: 5%; left: 50%; transform: translateX(-50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(79,142,247,0.11) 0%, transparent 65%);
}
.glow-2 {
  top: 35%; left: 10%;
  width: 350px; height: 350px;
  background: radial-gradient(ellipse, rgba(123,94,167,0.07) 0%, transparent 65%);
}
.glow-3 {
  top: 20%; right: 8%;
  width: 300px; height: 300px;
  background: radial-gradient(ellipse, rgba(61,217,164,0.06) 0%, transparent 65%);
}

.eyebrow {
  display: inline-flex;
  align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: rgba(79,142,247,0.07);
  border: 1px solid rgba(79,142,247,0.2);
  padding: 6px 14px; border-radius: 100px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp .6s ease forwards .2s;
}
.eyebrow::before {
  content:''; width:5px; height:5px;
  border-radius:50%; background:var(--accent);
}

h1 {
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.03em;
  max-width: 820px;
  opacity: 0;
  animation: fadeUp .8s ease forwards .4s;
}
.grad {
  background: linear-gradient(135deg, #4f8ef7 0%, #9b7ee8 45%, #3dd9a4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text2);
  max-width: 520px;
  line-height: 1.7;
  margin-top: 1.25rem;
  opacity: 0;
  animation: fadeUp .8s ease forwards .6s;
}

.hero-hypo {
  margin-top: 2rem;
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 13px; color: var(--text2);
  line-height: 1.65;
  opacity: 0;
  animation: fadeUp .8s ease forwards .75s;
}
.hero-hypo strong {
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; letter-spacing: .12em;
  display: block; margin-bottom: .4rem;
}

.hero-btns {
  display: flex; gap: 1rem;
  margin-top: 2.5rem;
  opacity: 0;
  animation: fadeUp .8s ease forwards .9s;
  flex-wrap: wrap; justify-content: center;
}
.btn-p {
  background: var(--accent); color: #fff;
  font-family: 'Onest', sans-serif;
  font-size: 14px; font-weight: 600;
  padding: .7rem 1.8rem; border-radius: 8px;
  text-decoration: none; border: none; cursor: pointer;
  transition: all .2s;
  box-shadow: 0 0 22px rgba(79,142,247,.3);
}
.btn-p:hover { transform: translateY(-2px); box-shadow: 0 0 35px rgba(79,142,247,.5); }
.btn-s {
  background: transparent; color: var(--text2);
  font-family: 'Onest', sans-serif;
  font-size: 14px; font-weight: 500;
  padding: .7rem 1.8rem; border-radius: 8px;
  text-decoration: none; border: 1px solid var(--border2); cursor: pointer;
  transition: all .2s;
}
.btn-s:hover { border-color: var(--text3); color: var(--text); }

/* ─── STATS ─── */
.stats {
  position: relative; z-index: 1;
  display: flex; justify-content: center;
  gap: 3rem; flex-wrap: wrap;
  padding: 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(13,19,32,.5);
  backdrop-filter: blur(10px);
}
.stat { text-align: center; }
.stat-n {
  font-size: 2rem; font-weight: 800;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  display: block;
}
.stat-n em { color: var(--accent); font-style: normal; }
.stat-l {
  font-size: 11px; color: var(--text3);
  margin-top: 4px; letter-spacing: .05em;
}

/* ─── SECTIONS ─── */
.wrap {
  position: relative; z-index: 1;
  max-width: 1100px; margin: 0 auto;
  padding: 5rem 2rem;
}
.sec-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; font-weight: 500;
  letter-spacing: .15em; color: var(--accent);
  text-transform: uppercase; margin-bottom: .6rem;
}
.sec-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700; letter-spacing: -.02em;
  line-height: 1.15; margin-bottom: .7rem;
}
.sec-sub {
  font-size: 15px; color: var(--text2);
  line-height: 1.65; max-width: 500px;
  margin-bottom: 3rem;
}

.divider {
  position: relative; z-index: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
}

/* ─── CARDS ─── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: border-color .25s, transform .25s, box-shadow .25s;
  position: relative; overflow: hidden;
}
.card::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(circle at top left, var(--cg, rgba(79,142,247,.04)), transparent 60%);
  pointer-events: none;
}
.card:hover {
  border-color: var(--border2);
  transform: translateY(-3px);
  box-shadow: 0 14px 45px rgba(0,0,0,.45);
}
.card.hot { border-color: rgba(79,142,247,.3); --cg: rgba(79,142,247,.07); }

.card-wide {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2rem; align-items: center;
}

.c-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.c-top {
  display: flex; align-items: flex-start;
  justify-content: space-between; margin-bottom: 1rem;
}
.c-badges { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }

.badge {
  font-size: 10px; font-weight: 600;
  letter-spacing: .06em;
  padding: 3px 8px; border-radius: 100px;
}
.b-blue  { background: rgba(79,142,247,.1); color:#7fb3fa; border:1px solid rgba(79,142,247,.2); }
.b-green { background: rgba(61,217,164,.1); color:#3dd9a4; border:1px solid rgba(61,217,164,.2); }
.b-purple{ background: rgba(123,94,167,.12); color:#c0a0e8; border:1px solid rgba(123,94,167,.25); }
.b-amber { background: rgba(245,166,35,.1); color:#f5a623; border:1px solid rgba(245,166,35,.2); }
.b-free  { background: rgba(61,217,164,.08); color:#3dd9a4; border:1px solid rgba(61,217,164,.2); }

.c-cat  { font-size:11px; color:var(--text3); font-family:'JetBrains Mono',monospace; letter-spacing:.08em; margin-bottom:.4rem; }
.c-name { font-size:17px; font-weight:700; letter-spacing:-.01em; margin-bottom:.75rem; }
.c-desc { font-size:13.5px; color:var(--text2); line-height:1.65; }
.wide .c-desc { font-size:15px; }

.c-feats { margin-top:1rem; display:flex; flex-direction:column; gap:6px; }
.feat {
  display:flex; align-items:center; gap:8px;
  font-size:12.5px; color:var(--text2);
}
.feat::before {
  content:''; width:4px; height:4px;
  border-radius:50%; background:var(--accent3); flex-shrink:0;
}

.c-foot {
  margin-top:1.25rem; padding-top:1rem;
  border-top:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.c-link {
  font-size:12px; color:var(--accent);
  text-decoration:none; font-weight:500;
  display:flex; align-items:center; gap:4px;
  transition:gap .2s;
}
.c-link:hover { gap:8px; }
.c-link::after { content:'→'; }

/* ─── COMPARE ─── */
.tbl-wrap {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:16px; overflow:hidden;
  overflow-x:auto;
}
table { width:100%; border-collapse:collapse; font-size:13.5px; min-width:600px; }
thead th {
  padding:12px 16px; text-align:left;
  font-size:10px; font-weight:600; letter-spacing:.08em;
  color:var(--text3); text-transform:uppercase;
  background:rgba(255,255,255,.02);
  border-bottom:1px solid var(--border);
}
tbody tr { border-bottom:1px solid var(--border); transition:background .15s; }
tbody tr:last-child { border-bottom:none; }
tbody tr:hover { background:rgba(255,255,255,.02); }
tbody td { padding:13px 16px; color:var(--text2); vertical-align:middle; }
tbody td:first-child { color:var(--text); font-weight:600; }
.ck { color:#3dd9a4; font-size:14px; }
.cr { color:#e25555; font-size:14px; }
.ch { color:var(--accent4); font-size:14px; }

/* ─── HYPOTHESIS ─── */
.hypo-box {
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:20px; padding:3rem;
  text-align:center; position:relative; overflow:hidden;
}
.hypo-box::before {
  content:'"'; position:absolute;
  top:-1rem; left:1.5rem;
  font-size:9rem; font-weight:800;
  color:rgba(79,142,247,.05); line-height:1; pointer-events:none;
}
.hypo-q {
  font-size:clamp(1rem, 2.5vw, 1.4rem);
  font-weight:500; line-height:1.6;
  max-width:680px; margin:0 auto; color:var(--text);
}
.hypo-q em { font-style:normal; color:var(--accent); font-weight:700; }
.hypo-lbl {
  font-family:'JetBrains Mono',monospace;
  font-size:10px; letter-spacing:.15em; color:var(--text3);
  margin-top:1.5rem; text-transform:uppercase;
}

/* ─── ABOUT ─── */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:1.25rem; }
.about-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:16px; padding:1.75rem;
}
.ac-title {
  font-size:11px; font-weight:600; color:var(--text3);
  font-family:'JetBrains Mono',monospace;
  letter-spacing:.1em; margin-bottom:.75rem; text-transform:uppercase;
}
.ac-text { font-size:15px; color:var(--text2); line-height:1.7; }
.ac-text strong { color:var(--text); }
.tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:1rem; }
.tag {
  font-size:12px; padding:4px 12px; border-radius:100px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border2); color:var(--text3);
}

/* ─── FOOTER ─── */
footer {
  position:relative; z-index:1;
  border-top:1px solid var(--border);
  padding:2rem; text-align:center;
  font-size:12px; color:var(--text3);
}
footer a { color:var(--text2); text-decoration:none; }
footer a:hover { color:var(--text); }

/* ─── RESPONSIVE ─── */
@media (max-width:768px) {
  .nav-links, .nav-btn { display:none; }
  .hamburger { display:flex; }
  .card-wide { grid-column:auto; grid-template-columns:1fr; }
  .about-grid { grid-template-columns:1fr; }
  .stats { gap:1.5rem; }
  h1 { font-size:2.3rem; }
}