*{box-sizing:border-box}
html,body{margin:0;background:#02040d;color:white;font-family:Arial,Helvetica,sans-serif}
a{color:inherit;text-decoration:none}

.hero{position:relative;overflow:hidden;min-height:760px;padding:28px 4vw 0;background:radial-gradient(circle at 16% 38%,rgba(0,160,255,.40),transparent 24%),radial-gradient(circle at 84% 18%,rgba(180,40,255,.55),transparent 25%),radial-gradient(circle at 76% 69%,rgba(255,136,37,.15),transparent 28%),linear-gradient(120deg,#01030a 0%,#050819 48%,#080014 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(255,255,255,.75) 1px,transparent 1.7px),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:88px 88px,70px 70px,70px 70px;opacity:.22;pointer-events:none}

.nav{position:relative;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{font-size:42px;font-weight:900;letter-spacing:-2px}
.logo span,.footer-logo span{background:linear-gradient(90deg,#46c7ff,#bd5cff);-webkit-background-clip:text;color:transparent}
.links{display:flex;gap:26px;font-weight:800;color:#eef3ff}
.links a:hover{color:#65d8ff}

.hero-grid{position:relative;z-index:3;min-height:560px}
.neural-face{position:absolute;left:-3vw;top:55px;width:390px;max-width:29vw;filter:drop-shadow(0 0 34px rgba(0,178,255,.95));mix-blend-mode:screen}
.hero-copy{position:absolute;left:26%;top:58px;width:440px}
.hero-copy h1{margin:0 0 24px;font-size:72px;line-height:.95;letter-spacing:-3px}
.hero-copy h1 span{background:linear-gradient(90deg,#48c7ff,#ba5cff);-webkit-background-clip:text;color:transparent}
.hero-copy p{margin:0 0 22px;color:#dce4fb;font-size:24px;line-height:1.35;font-weight:700}
.glow-line{width:68px;height:3px;margin-bottom:26px;border-radius:999px;background:linear-gradient(90deg,#5ee7ff,#bd4cff);box-shadow:0 0 18px rgba(91,210,255,.75)}
.hero-copy h2{margin:0 0 24px;font-size:32px;line-height:1.25}
.hero-copy h2 span{color:#ba68ff}
.cta{display:inline-block;padding:15px 32px;border-radius:999px;background:linear-gradient(90deg,#0a8cff,#c22be9);color:white;font-weight:900;font-size:18px;box-shadow:0 0 35px rgba(95,123,255,.5)}

.arrow{position:absolute;left:53%;top:160px;font-size:150px;color:#b36cff;transform:rotate(-32deg);text-shadow:0 0 20px #a566ff,0 0 60px rgba(191,71,255,.9);animation:floatArrow 3s ease-in-out infinite}
@keyframes floatArrow{50%{transform:rotate(-32deg) translate(8px,-10px)}}

.stairs{position:absolute;right:0;bottom:0;width:50%;height:430px;display:flex;align-items:flex-end}
.step{position:relative;width:20%;min-width:108px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:white;background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(0,0,0,.38));border:2px solid rgba(255,255,255,.32);border-bottom:none;border-radius:14px 14px 0 0}
.step strong{font-size:54px;line-height:1}
.step b{margin-top:8px;text-transform:uppercase;font-size:15px}
.step small{margin-top:6px;font-size:13px;line-height:1.25;color:#f2f5ff}
.s1{height:135px;border-color:#159bff;box-shadow:0 0 34px rgba(20,152,255,.70)}
.s2{height:185px;border-color:#00eec2;box-shadow:0 0 34px rgba(0,238,194,.42)}
.s3{height:245px;border-color:#ffd43f;box-shadow:0 0 38px rgba(255,212,63,.45)}
.s4{height:315px;border-color:#ff8d31;box-shadow:0 0 38px rgba(255,141,49,.48)}
.s5{height:410px;border-color:#d747ff;box-shadow:0 0 58px rgba(214,71,255,.80),inset 0 0 28px rgba(214,71,255,.22)}
.door{position:absolute;top:-96px;right:22px;width:68px;height:112px;border-radius:6px 6px 0 0;background:linear-gradient(90deg,#8d39ff,#fff,#f0a8ff);box-shadow:0 0 44px #d747ff,0 0 95px rgba(214,71,255,.92)}
.ready-card{position:absolute;right:3vw;bottom:72px;z-index:6;padding:17px 22px;border:1px solid rgba(198,84,255,.55);border-radius:14px;background:rgba(13,8,32,.72);box-shadow:0 0 30px rgba(198,84,255,.25)}

.topic-bar{position:relative;z-index:8;display:grid;grid-template-columns:repeat(6,1fr);border:1px solid rgba(120,150,255,.32);border-radius:16px;overflow:hidden;background:rgba(0,0,0,.43);backdrop-filter:blur(9px)}
.topic-bar a{padding:20px 10px;text-align:center;border-right:1px solid rgba(255,255,255,.12);font-weight:900;text-transform:uppercase}
.topic-bar a:hover{background:rgba(91,210,255,.12)}

main{padding:36px 4vw 44px;background:#02040d}
.section-title{margin:0;text-align:center;font-size:36px}
.section-sub{margin:8px 0 28px;text-align:center;color:#cbd3ea;font-weight:700}
.story-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.story-card{display:block;min-height:330px;border:1px solid rgba(255,255,255,.18);border-radius:14px;overflow:hidden;background:rgba(255,255,255,.045);transition:.2s}
.story-card:hover{transform:translateY(-5px);box-shadow:0 0 28px rgba(91,210,255,.14)}
.story-card img{width:100%;height:128px;object-fit:cover;display:block;border-bottom:1px solid rgba(255,255,255,.14)}
.story-card .label{margin:17px 18px 8px;color:#48c7ff;font-size:13px;font-weight:900;text-transform:uppercase}
.story-card h3{margin:0 18px 12px;font-size:18px;line-height:1.22}
.story-card p{margin:0 18px 16px;color:#cfd6ef;font-size:14px;line-height:1.45}
.story-card span{display:inline-block;margin:0 18px 18px;padding:9px 14px;border:1px solid #48c7ff;border-radius:8px;color:#c8efff;font-weight:900;font-size:13px}

footer{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:28px 4vw;border-top:1px solid rgba(255,255,255,.10);background:#02040d}
.footer-logo{font-size:30px;font-weight:900}
.footer-logo small{color:#b8c0d8;font-size:12px;font-weight:400}
.footer-links{display:flex;flex-wrap:wrap;gap:30px;color:#c7cfe8}

@media(max-width:1150px){
  .links{gap:14px;font-size:14px}
  .neural-face{opacity:.55}
  .hero-copy{left:31%}
  .arrow,.ready-card{display:none}
  .stairs{position:relative;right:auto;width:100%;padding-top:460px;overflow-x:auto}
  .hero-grid{min-height:auto}
  .story-grid,.topic-bar{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:700px){
  .nav{align-items:flex-start;flex-direction:column}
  .links{display:none}
  .hero{min-height:auto;padding-bottom:28px}
  .neural-face{display:none}
  .hero-copy{position:relative;left:auto;top:auto;width:auto;padding-top:34px}
  .hero-copy h1{font-size:52px}
  .stairs{padding-top:35px}
  .step{min-width:132px}
  .story-grid,.topic-bar{grid-template-columns:1fr}
  footer{flex-direction:column;align-items:flex-start}
}


/* NeuroTier topic-page upgrade */
.topic-body{
  min-height:100vh;
  background:
    radial-gradient(circle at 15% 20%, rgba(0,180,255,.18), transparent 28%),
    radial-gradient(circle at 84% 10%, rgba(180,70,255,.16), transparent 28%),
    linear-gradient(120deg,#02040d,#070814 55%,#09040f);
  color:#fff;
}

.topic-body.green{background:radial-gradient(circle at 17% 20%,rgba(0,255,190,.18),transparent 28%),radial-gradient(circle at 84% 12%,rgba(0,170,255,.14),transparent 28%),linear-gradient(120deg,#02040d,#04120f 55%,#02040d)}
.topic-body.gold{background:radial-gradient(circle at 17% 20%,rgba(255,180,45,.18),transparent 28%),radial-gradient(circle at 84% 12%,rgba(255,90,0,.12),transparent 28%),linear-gradient(120deg,#02040d,#120904 55%,#02040d)}
.topic-body.red{background:radial-gradient(circle at 17% 20%,rgba(255,80,110,.18),transparent 28%),radial-gradient(circle at 84% 12%,rgba(0,150,255,.14),transparent 28%),linear-gradient(120deg,#02040d,#120407 55%,#02040d)}
.topic-body.purple{background:radial-gradient(circle at 17% 20%,rgba(130,90,255,.20),transparent 28%),radial-gradient(circle at 84% 12%,rgba(0,170,255,.13),transparent 28%),linear-gradient(120deg,#02040d,#080619 55%,#02040d)}

.topic-nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  padding:26px 4vw;
}

.topic-logo{
  font-size:34px;
  font-weight:900;
  letter-spacing:-1.5px;
}

.topic-logo span,
.topic-footer span{
  background:linear-gradient(90deg,#4bcaff,#bd5cff);
  -webkit-background-clip:text;
  color:transparent;
}

.topic-nav nav{
  display:flex;
  gap:24px;
  font-weight:800;
  flex-wrap:wrap;
}

.topic-nav a:hover{color:#66d8ff}

.topic-hero{
  margin:0 4vw;
  min-height:390px;
  display:grid;
  grid-template-columns:48% 52%;
  gap:34px;
  align-items:center;
  border:1px solid rgba(255,255,255,.14);
  border-radius:24px;
  overflow:hidden;
  background:rgba(255,255,255,.045);
  box-shadow:0 0 45px rgba(0,0,0,.35);
}

.topic-hero-image{
  height:390px;
  overflow:hidden;
}

.topic-hero-image img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:saturate(1.15) contrast(1.08);
}

.topic-hero-copy{
  padding:36px;
}

.topic-kicker{
  color:#62d7ff;
  text-transform:uppercase;
  letter-spacing:4px;
  font-weight:900;
  font-size:13px;
  margin-bottom:12px;
}

.topic-hero-copy h1{
  margin:0;
  font-size:clamp(54px,7vw,96px);
  line-height:.95;
  letter-spacing:-3px;
}

.topic-hero-copy p{
  max-width:640px;
  color:#d8e1fb;
  font-size:24px;
  line-height:1.35;
  font-weight:700;
}

.topic-cta{
  display:inline-block;
  margin-top:8px;
  padding:14px 26px;
  border-radius:999px;
  background:linear-gradient(90deg,#0a8cff,#bd31ee);
  font-weight:900;
  box-shadow:0 0 28px rgba(91,130,255,.4);
}

.topic-main{
  padding:42px 4vw 50px;
}

.topic-section-title{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:28px;
  text-align:center;
  margin-bottom:28px;
}

.topic-section-title span{
  width:110px;
  height:2px;
  background:linear-gradient(90deg,transparent,#62d7ff,transparent);
  box-shadow:0 0 13px rgba(98,215,255,.7);
}

.topic-section-title h2{
  margin:0;
  font-size:38px;
}

.topic-section-title p{
  margin:7px 0 0;
  color:#cbd3ea;
  font-weight:700;
}

.topic-story-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}

.topic-story-card{
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;
  padding:24px;
  background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.032));
  box-shadow:0 0 28px rgba(0,0,0,.22);
  transition:.2s;
}

.topic-story-card:hover{
  transform:translateY(-5px);
  border-color:rgba(98,215,255,.55);
  box-shadow:0 0 34px rgba(98,215,255,.14);
}

.story-topline{
  display:flex;
  justify-content:space-between;
  gap:12px;
  color:#62d7ff;
  font-size:13px;
  font-weight:900;
  text-transform:uppercase;
}

.story-topline small{
  color:#9fa9c7;
}

.topic-story-card h2{
  margin:16px 0 12px;
  font-size:28px;
  line-height:1.1;
}

.topic-story-card p{
  color:#d4dcf5;
  line-height:1.5;
  font-size:16px;
}

.tier-buttons{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:18px 0;
}

.tier-buttons button{
  border:1px solid rgba(98,215,255,.55);
  background:rgba(98,215,255,.08);
  color:#eaf8ff;
  border-radius:999px;
  padding:9px 12px;
  font-weight:900;
  cursor:pointer;
}

.tier-buttons button:hover{
  background:linear-gradient(90deg,#0a8cff,#bd31ee);
}

.source-link{
  color:#c9efff;
  font-weight:900;
}

.archive-panel{
  margin-top:44px;
  padding:28px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  background:rgba(255,255,255,.04);
}

.archive-panel h2{
  margin-top:0;
  font-size:30px;
}

.archive-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}

.archive-grid a{
  padding:18px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:14px;
  background:rgba(0,0,0,.22);
  font-weight:900;
}

.topic-footer{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  padding:28px 4vw;
  border-top:1px solid rgba(255,255,255,.10);
  color:#eef3ff;
  font-weight:900;
}

.topic-footer div{
  font-size:28px;
}

.topic-footer small{
  font-size:12px;
  color:#b8c0d8;
  font-weight:400;
}

@media(max-width:950px){
  .topic-nav{align-items:flex-start;flex-direction:column}
  .topic-hero{grid-template-columns:1fr}
  .topic-hero-image{height:280px}
  .topic-story-grid,.archive-grid{grid-template-columns:1fr}
  .topic-section-title span{display:none}
}