@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg:#03040F;
  --bg-alt:#070A1A;
  --panel:#0A0E1E;
  --panel-2:#101528;
  --border:rgba(255,255,255,0.09);
  --border-strong:rgba(255,255,255,0.18);
  --text-primary:#F3F5F9;
  --text-secondary:#9CA4B8;
  --text-muted:#656C80;
  --purple:#8A7CF5;
  --blue:#45C8FB;
  --cyan:#14E0EF;
  --teal:#22C99A;
  --gradient:linear-gradient(90deg,#8A7CF5 0%,#45C8FB 48%,#22C99A 100%);
  --gradient-soft:linear-gradient(135deg,rgba(138,124,245,0.16),rgba(69,200,251,0.12) 45%,rgba(34,201,154,0.16));
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
  --max:1160px;
}

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

body{
  font-family:var(--font-body);
  color:var(--text-primary);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}

.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:0.14em;
  text-transform:uppercase;color:var(--cyan);
}

h1,h2,h3{font-family:var(--font-display);font-weight:600;letter-spacing:-0.01em;color:var(--text-primary)}
h1{font-size:clamp(36px,5.2vw,58px);line-height:1.08}
h2{font-size:clamp(26px,3.4vw,36px);line-height:1.16}
h3{font-size:19px;line-height:1.3}
p{color:var(--text-secondary);font-size:16px}
.lede{font-size:19px;color:var(--text-secondary);max-width:640px}

.grad-text{
  background:var(--gradient);-webkit-background-clip:text;background-clip:text;
  color:transparent;
}

/* nav */
.site-nav{
  border-bottom:1px solid var(--border);position:sticky;top:0;
  background:rgba(3,4,15,0.95);backdrop-filter:blur(10px);z-index:50;
}
.site-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:600;font-size:17px}
.logo img{height:30px;width:auto;display:block;border-radius:6px}
.logo .nomix{background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}

.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:14px;color:var(--text-secondary);padding:6px 0;border-bottom:1px solid transparent;transition:color .15s}
.nav-links a:hover{color:var(--text-primary)}
.nav-links a.current{color:var(--text-primary)}

.btn{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-body);font-weight:500;
  font-size:14px;padding:12px 22px;border-radius:8px;border:1px solid var(--border-strong);
  transition:transform .15s,box-shadow .15s,border-color .15s,background .15s;
}
.btn-primary{
  background:var(--gradient);color:#04070C;border:none;font-weight:700;
  box-shadow:0 0 0 1px rgba(255,255,255,0.14),0 4px 18px -6px rgba(69,200,251,0.55);
}
.btn-primary:hover{box-shadow:0 0 0 1px rgba(255,255,255,0.2),0 8px 28px -8px rgba(69,200,251,0.7);transform:translateY(-1px)}
.btn-ghost{border-color:var(--border-strong);color:var(--text-primary);background:rgba(255,255,255,0.02)}
.btn-ghost:hover{border-color:var(--blue);background:rgba(69,200,251,0.06)}
.nav-cta{padding:10px 18px;font-size:13px}
.nav-cta.btn-primary{
  color:#FFFFFF;font-weight:700;
  background-image:linear-gradient(var(--bg),var(--bg)),var(--gradient);
  background-origin:border-box;background-clip:padding-box,border-box;
  border:1.5px solid transparent;
  box-shadow:0 0 22px -6px rgba(69,200,251,0.6);
  text-shadow:0 1px 2px rgba(0,0,0,0.35);
}
.nav-cta.btn-primary:hover{
  box-shadow:0 0 28px -4px rgba(69,200,251,0.8);
  transform:translateY(-1px);
}

.nav-toggle{display:none;background:none;border:0;padding:8px}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--text-primary);margin:5px 0}

/* hero */
.hero{position:relative;padding:76px 0 60px;border-bottom:1px solid var(--border);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{margin:16px 0 18px}
.hero .lede{margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

.hero-glow{
  position:absolute;top:-160px;right:-120px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(138,124,245,0.25),rgba(69,200,251,0.14) 45%,transparent 72%);
  filter:blur(10px);pointer-events:none;
}
.hero-mark{position:relative;display:flex;justify-content:center}
.hero-mark img{
  width:100%;max-width:440px;filter:drop-shadow(0 20px 60px rgba(69,200,251,0.18));
  border-radius:28px;
}

/* pillar strip */
.pillars{border-bottom:1px solid var(--border);padding:40px 0}
.pillar-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.pillar{background:var(--panel);padding:24px 18px;text-align:left}
.pillar .picon{width:28px;height:28px;margin-bottom:14px;color:var(--cyan)}
.pillar h3{font-size:15px;margin-bottom:6px}
.pillar p{font-size:13px;color:var(--text-muted);margin:0}

/* section rhythm */
section.block{padding:68px 0;border-bottom:1px solid var(--border)}
section.block:last-of-type{border-bottom:none}
.block-head{margin-bottom:38px}
.block-head h2{margin-top:10px}
.block-head .lede{margin-top:12px}

.tag{
  display:inline-block;font-family:var(--font-mono);font-size:11px;color:var(--cyan);
  background:rgba(20,224,239,0.08);border:1px solid rgba(20,224,239,0.22);
  padding:4px 9px;border-radius:5px;margin-bottom:16px;
}

/* grids */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.cell{background:var(--panel);padding:28px 24px;transition:background .15s}
.cell:hover{background:var(--panel-2)}
.cell h3{margin-bottom:10px}
.cell p{font-size:14.5px;margin:0}
.cell ul{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:7px}
.cell ul li{font-size:13.5px;color:var(--text-secondary);padding-left:16px;position:relative}
.cell ul li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:1.5px;background:var(--blue)}

/* rows */
.rows{border-top:1px solid var(--border)}
.row{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--border)}
.row h3{color:var(--text-primary)}
.row p{margin:0}

/* dashboard preview mockup */
.dash-preview{
  border:1px solid var(--border-strong);border-radius:14px;background:var(--panel);
  overflow:hidden;box-shadow:0 30px 80px -30px rgba(69,200,251,0.15);
}
.dash-chrome{
  display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--border);
  background:var(--bg-alt);
}
.dash-chrome span{width:9px;height:9px;border-radius:50%;background:var(--border-strong)}
.dash-chrome .url{
  margin-left:14px;font-family:var(--font-mono);font-size:11px;color:var(--text-muted);
}
.dash-body{padding:22px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.dp-card{
  background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:16px;
  grid-column:span 2;
}
.dp-card.wide{grid-column:span 2}
.dp-card.full{grid-column:span 4}
.dp-label{font-family:var(--font-mono);font-size:10.5px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.dp-value{font-family:var(--font-display);font-size:22px;color:var(--text-primary);margin-bottom:2px}
.dp-delta{font-size:11.5px;color:var(--teal)}
.dp-delta.down{color:var(--purple)}
.dp-bars{display:flex;align-items:flex-end;gap:5px;height:54px;margin-top:12px}
.dp-bars i{flex:1;height:0;background:linear-gradient(180deg,var(--blue),var(--purple));border-radius:2px 2px 0 0;opacity:.9;transition:height 1s cubic-bezier(.2,.7,.2,1)}
.draw-line{stroke-dasharray:420;stroke-dashoffset:420;transition:stroke-dashoffset 1.3s cubic-bezier(.2,.7,.2,1)}
.in-view .draw-line{stroke-dashoffset:0}
.adv-bar{width:0;transition:width 1.1s cubic-bezier(.2,.7,.2,1)}
.dp-gauge{position:relative;width:74px;height:74px;margin:4px auto 0}

/* cta band */
.cta-band{
  background:var(--panel);border:1px solid var(--border-strong);border-radius:14px;padding:46px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:'';position:absolute;inset:0;background:var(--gradient-soft);opacity:.5;pointer-events:none;
}
.cta-band > *{position:relative}
.cta-band h2{margin-bottom:6px}

/* certification cards */
.cert-tier{margin-bottom:44px}
.cert-tier:last-child{margin-bottom:0}
.tier-label{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.tier-label .eyebrow{margin:0}
.tier-line{flex:1;height:1px;background:var(--border)}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cert-card{
  border:1px solid var(--border);border-radius:12px;background:var(--panel);padding:22px;
  transition:border-color .15s,transform .15s;
}
.cert-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.cert-code{
  display:inline-block;font-family:var(--font-mono);font-size:11px;color:var(--purple);
  background:rgba(138,124,245,0.1);border:1px solid rgba(138,124,245,0.25);
  padding:3px 8px;border-radius:5px;margin-bottom:12px;
}
.cert-card h3{font-size:16px;margin-bottom:8px}
.cert-card ul{list-style:none;display:flex;flex-direction:column;gap:6px}
.cert-card ul li{font-size:13px;color:var(--text-secondary);padding-left:14px;position:relative}
.cert-card ul li::before{content:'';position:absolute;left:0;top:7px;width:5px;height:1.5px;background:var(--teal)}

.featured-track{
  border:1px solid var(--border-strong);border-radius:14px;padding:32px;
  background:linear-gradient(145deg,rgba(138,124,245,0.08),rgba(20,224,239,0.05));
  margin-bottom:48px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
}
.featured-track p{max-width:560px}

/* forms */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.field{margin-bottom:20px}
.field label{
  display:block;font-family:var(--font-mono);font-size:11px;text-transform:uppercase;
  letter-spacing:0.08em;color:var(--text-muted);margin-bottom:7px;
}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--font-body);font-size:15px;color:var(--text-primary);
  background:var(--panel);border:1px solid var(--border-strong);border-radius:8px;padding:11px 12px;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue);
}
.field textarea{resize:vertical;min-height:96px}
.req{color:var(--cyan)}
.form-note{font-size:13px;color:var(--text-muted);margin-top:4px}
.form-status{margin-top:16px;font-size:14px;padding:12px 14px;border-radius:8px;display:none;border:1px solid transparent}
.form-status.ok{display:block;background:rgba(34,201,154,0.1);color:#5EE7BE;border-color:rgba(34,201,154,0.3)}
.form-status.err{display:block;background:rgba(226,75,74,0.1);color:#F19A99;border-color:rgba(226,75,74,0.3)}

/* footer */
footer{border-top:1px solid var(--border);padding:52px 0 40px}
.footer-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.footer-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-links a{font-size:14px;color:var(--text-secondary)}
.footer-links a:hover{color:var(--text-primary)}
.footer-bottom{
  margin-top:32px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;color:var(--text-muted);font-size:13px;flex-wrap:wrap;gap:10px;
}
.foot-blurb{max-width:320px;color:var(--text-muted);font-size:14px;margin-top:10px}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in-view{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
}

/* parallax glow */
.hero-glow{transition:transform .05s linear}

/* interactive dashboard tour */
.dash-tour{display:grid;grid-template-columns:210px 1fr}
.dt-nav{
  background:var(--bg-alt);border-right:1px solid var(--border);
  padding:14px 8px;display:flex;flex-direction:column;gap:2px;
}
.dt-item{
  display:flex;align-items:center;gap:10px;background:none;border:none;
  text-align:left;font-family:var(--font-body);font-size:13px;color:var(--text-secondary);
  padding:11px 12px;border-radius:8px;cursor:pointer;border-left:2px solid transparent;
  transition:background .15s,color .15s,border-color .15s;
}
.dt-item:hover{background:rgba(255,255,255,0.05);color:var(--text-primary)}
.dt-item.active{background:rgba(69,200,251,0.09);color:var(--text-primary);border-left-color:var(--blue);font-weight:600}
.dt-dot{width:6px;height:6px;border-radius:50%;background:var(--border-strong);flex-shrink:0}
.dt-item.active .dt-dot{background:var(--gradient);box-shadow:0 0 8px rgba(69,200,251,0.6)}

.dt-frame{position:relative;width:100%;line-height:0;background:#fff}
.dt-slide{display:none}
.dt-slide.active{display:block;position:relative}
.dt-slide img{width:100%;height:auto;display:block}

.dt-hotspot{
  position:absolute;transform:translate(-50%,-50%);width:26px;height:26px;border-radius:50%;
  background:var(--bg);color:#fff;border:2px solid var(--cyan);font-family:var(--font-mono);
  font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;
  cursor:pointer;box-shadow:0 0 0 4px rgba(20,224,239,0.16),0 4px 10px rgba(0,0,0,0.35);
  animation:dtpulse 2.4s ease-in-out infinite;z-index:2;padding:0;
}
.dt-hotspot:hover,.dt-hotspot.active{background:var(--gradient);color:#04070C;border-color:transparent}
@keyframes dtpulse{
  0%,100%{box-shadow:0 0 0 4px rgba(20,224,239,0.16),0 4px 10px rgba(0,0,0,0.35)}
  50%{box-shadow:0 0 0 8px rgba(20,224,239,0.05),0 4px 10px rgba(0,0,0,0.35)}
}
@media (prefers-reduced-motion:reduce){.dt-hotspot{animation:none}}

.dt-tooltip{
  position:absolute;max-width:240px;background:var(--panel-2);border:1px solid var(--border-strong);
  border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.5;color:var(--text-primary);
  box-shadow:0 20px 50px -14px rgba(0,0,0,0.6);opacity:0;pointer-events:none;
  transition:opacity .15s;z-index:3;
}
.dt-tooltip.open{opacity:1}
.dt-tooltip::before{
  content:'';position:absolute;width:10px;height:10px;background:var(--panel-2);
  border:1px solid var(--border-strong);transform:rotate(45deg);
}
.dt-tooltip.pos-below::before{top:-6px;border-right:none;border-bottom:none}
.dt-tooltip.pos-above::before{bottom:-6px;border-left:none;border-top:none}
.dt-tooltip.align-left::before{left:16px}
.dt-tooltip.align-center::before{left:50%;margin-left:-5px}
.dt-tooltip.align-right::before{right:16px}

.dt-caption{padding:16px 22px;font-size:13.5px;color:var(--text-secondary);border-top:1px solid var(--border);background:var(--bg-alt)}

@media (max-width:760px){
  .dash-tour{grid-template-columns:1fr}
  .dt-nav{flex-direction:row;overflow-x:auto;border-right:none;border-bottom:1px solid var(--border);-webkit-overflow-scrolling:touch}
  .dt-item{white-space:nowrap;border-left:none;border-bottom:2px solid transparent}
  .dt-item.active{border-left:none;border-bottom-color:var(--blue)}
  .dt-tooltip{max-width:190px;font-size:12.5px;padding:10px 12px}
  .dt-hotspot{width:22px;height:22px;font-size:11px}
}

/* blog: reading progress bar */
.read-progress{position:sticky;top:72px;left:0;width:100%;height:3px;background:var(--border);z-index:40}
.read-progress-bar{height:100%;width:0%;background:var(--gradient);transition:width .1s linear}

/* blog: post header */
.blog-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px;font-family:var(--font-mono);font-size:12.5px;color:var(--text-muted)}
.blog-meta .tag{margin:0}
.blog-summary{
  margin-top:32px;border-left:3px solid var(--cyan);background:var(--panel);
  border-radius:0 10px 10px 0;padding:20px 24px;
}
.blog-summary .label{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--cyan);margin-bottom:8px;display:block}
.blog-summary p{color:var(--text-primary);font-size:15.5px;margin:0}

/* blog: layout */
.blog-layout{display:grid;grid-template-columns:1fr 260px;gap:56px;align-items:start}
.blog-content h2{margin-top:44px;margin-bottom:14px;scroll-margin-top:100px}
.blog-content h3{margin-top:28px;margin-bottom:10px;scroll-margin-top:100px;color:var(--text-primary)}
.blog-content p{margin-bottom:16px}
.blog-content ul,.blog-content ol{margin:0 0 16px 0;padding-left:22px;color:var(--text-secondary)}
.blog-content li{margin-bottom:8px;font-size:15.5px}
.blog-content strong{color:var(--text-primary)}
.blog-content a{color:var(--cyan);text-decoration:underline}

.blog-toc{position:sticky;top:100px}
.toc-label{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px;display:block}
.blog-toc ol{list-style:none;display:flex;flex-direction:column;gap:2px;counter-reset:toc;margin-bottom:24px}
.blog-toc li{counter-increment:toc}
.blog-toc a{
  display:block;font-size:13px;color:var(--text-secondary);padding:7px 10px 7px 12px;
  border-left:2px solid var(--border);transition:color .15s,border-color .15s;
}
.blog-toc a:hover{color:var(--text-primary)}
.blog-toc a.active{color:var(--cyan);border-left-color:var(--cyan);font-weight:600}

.blog-cta-card{
  border:1px solid var(--border-strong);border-radius:12px;padding:20px;
  background:linear-gradient(145deg,rgba(138,124,245,0.08),rgba(20,224,239,0.05));
}
.blog-cta-card h3{font-size:15px;margin-bottom:8px}
.blog-cta-card p{font-size:13px;margin-bottom:14px}
.blog-cta-card .btn-primary{color:#000000}

/* blog: listing */
.blog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.blog-card{
  border:1px solid var(--border);border-radius:12px;background:var(--panel);
  padding:26px;display:flex;flex-direction:column;gap:10px;transition:border-color .15s,transform .15s;
}
.blog-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.blog-card .tag{margin-bottom:2px}
.blog-card h3{font-size:19px}
.blog-card p{font-size:14px;margin:0}
.blog-card .bc-meta{font-family:var(--font-mono);font-size:11.5px;color:var(--text-muted);margin-top:auto;padding-top:10px}

@media (max-width:860px){
  .blog-layout{grid-template-columns:1fr}
  .blog-toc{position:static}
  .blog-grid{grid-template-columns:1fr}
}

/* light theme override */
[data-theme="light"]{
  --bg:#F1EFF9;
  --bg-alt:#E9E6F5;
  --panel:#FFFFFF;
  --panel-2:#F7F6FC;
  --border:rgba(30,20,70,0.12);
  --border-strong:rgba(30,20,70,0.22);
  --text-primary:#14101F;
  --text-secondary:#454363;
  --text-muted:#767296;
  /* deeper, more saturated accents: the dark-mode set is tuned to glow against
     near-black and reads as pale/washed out on white. same hue family, shifted
     darker so text, borders, and icons stay legible and vivid on a light bg. */
  --purple:#7C3AED;
  --blue:#0369A1;
  --cyan:#0E7490;
  --teal:#0F766E;
  --gradient:linear-gradient(90deg,#7C3AED 0%,#0369A1 48%,#0F766E 100%);
  --gradient-soft:linear-gradient(135deg,rgba(124,58,237,0.10),rgba(3,105,161,0.08) 45%,rgba(15,118,110,0.10));
}

[data-theme="light"] .eyebrow{font-weight:500;letter-spacing:.16em}

[data-theme="light"] .btn-primary{
  color:#FFFFFF;box-shadow:0 0 0 1px rgba(255,255,255,0.3),0 8px 22px -6px rgba(124,58,237,0.4);
}
[data-theme="light"] .btn-primary:hover{box-shadow:0 0 0 1px rgba(255,255,255,0.4),0 12px 28px -6px rgba(124,58,237,0.5)}
[data-theme="light"] .btn-ghost{background:#FFFFFF}
[data-theme="light"] .btn-ghost:hover{background:rgba(3,105,161,0.06);box-shadow:0 4px 14px -6px rgba(3,105,161,0.25)}
[data-theme="light"] .nav-cta.btn-primary{
  background-image:linear-gradient(var(--bg),var(--bg)),var(--gradient);
  color:#14101F;text-shadow:none;
  box-shadow:0 0 0 1px rgba(20,20,30,0.06),0 4px 14px -6px rgba(3,105,161,0.25);
}
[data-theme="light"] .nav-cta.btn-primary:hover{box-shadow:0 0 0 1px rgba(20,20,30,0.1),0 8px 20px -6px rgba(3,105,161,0.35)}
[data-theme="light"] .site-nav{background:rgba(241,239,249,0.88)}
[data-theme="light"] .dash-chrome{background:var(--bg-alt)}
[data-theme="light"] .dt-frame{background:#EDEDE8}
[data-theme="light"] .hero-glow{
  opacity:.6;
  background:radial-gradient(circle,rgba(124,58,237,0.20),rgba(3,105,161,0.12) 45%,transparent 72%);
}
[data-theme="light"] .hero-mark img{filter:drop-shadow(0 18px 40px rgba(124,58,237,0.18))}
[data-theme="light"] .logo img{box-shadow:0 4px 14px rgba(20,20,30,0.16)}
[data-theme="light"] .tag{background:rgba(14,116,144,0.08);border-color:rgba(14,116,144,0.25)}

/* boxes get real lift: shadow at rest, more on hover, so they read as cards
   sitting on the page instead of flat rectangles blending into it */
[data-theme="light"] .cell,
[data-theme="light"] .pillar{box-shadow:inset 0 1px 0 rgba(255,255,255,0.6)}
[data-theme="light"] .dash-preview,
[data-theme="light"] .cert-card,
[data-theme="light"] .blog-card,
[data-theme="light"] .cta-band,
[data-theme="light"] .featured-track{
  box-shadow:0 2px 16px -4px rgba(30,20,70,0.08);
  border-color:var(--border-strong);
}
[data-theme="light"] .cert-card:hover,
[data-theme="light"] .blog-card:hover{
  box-shadow:0 14px 32px -10px rgba(30,20,70,0.18);
  border-color:rgba(124,58,237,0.3);
}
[data-theme="light"] .cert-card,
[data-theme="light"] .blog-card{position:relative;overflow:hidden}
[data-theme="light"] .cert-card::before,
[data-theme="light"] .blog-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient);
}
[data-theme="light"] .cert-code{background:rgba(124,58,237,0.08);border-color:rgba(124,58,237,0.25)}
[data-theme="light"] .featured-track,
[data-theme="light"] .blog-cta-card{background:linear-gradient(145deg,rgba(124,58,237,0.08),rgba(14,116,144,0.06))}
[data-theme="light"] .blog-cta-card{border:1px solid var(--border-strong);box-shadow:0 2px 16px -4px rgba(30,20,70,0.08)}
[data-theme="light"] .form-status.ok{background:rgba(15,118,110,0.08);color:#0F766E;border-color:rgba(15,118,110,0.3)}
[data-theme="light"] .form-status.err{background:rgba(185,28,28,0.08);color:#B91C1C;border-color:rgba(185,28,28,0.3)}
[data-theme="light"] .dt-item.active{background:rgba(3,105,161,0.08)}
[data-theme="light"] .dt-item.active .dt-dot{box-shadow:0 0 8px rgba(3,105,161,0.4)}
[data-theme="light"] .dt-hotspot{
  background:#FFFFFF;color:var(--cyan);box-shadow:0 0 0 4px rgba(14,116,144,0.14),0 4px 10px rgba(20,20,30,0.2);
}
[data-theme="light"] .dt-hotspot:hover,
[data-theme="light"] .dt-hotspot.active{background:var(--gradient);color:#FFFFFF}
[data-theme="light"] .cta-band::before{opacity:.7}
[data-theme="light"] .row{border-color:var(--border)}
[data-theme="light"] .grid-3,
[data-theme="light"] .grid-2,
[data-theme="light"] .grid-5,
[data-theme="light"] .pillar-grid,
[data-theme="light"] .form-wrap .field input,
[data-theme="light"] .form-wrap .field select,
[data-theme="light"] .form-wrap .field textarea{box-shadow:0 2px 16px -6px rgba(30,20,70,0.07)}

/* theme toggle button */
.theme-toggle{
  position:fixed;bottom:24px;right:24px;z-index:60;
  width:50px;height:50px;border-radius:50%;
  background:var(--panel);border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 10px 30px -8px rgba(0,0,0,0.5);
  transition:transform .15s,border-color .15s;
}
.theme-toggle:hover{transform:translateY(-2px) scale(1.04);border-color:var(--blue)}
.theme-toggle svg{width:20px;height:20px;stroke:var(--text-primary)}
.theme-toggle .icon-moon{display:none}
[data-theme="light"] .theme-toggle .icon-sun{display:none}
[data-theme="light"] .theme-toggle .icon-moon{display:block}

@media (max-width:760px){
  .theme-toggle{bottom:18px;right:18px;width:44px;height:44px}
  .theme-toggle svg{width:18px;height:18px}
}

/* course landing page */
.course-layout{display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:start}
.course-price-card{
  position:sticky;top:100px;border:1px solid var(--border-strong);border-radius:14px;
  background:var(--panel);padding:26px;box-shadow:0 20px 50px -24px rgba(69,200,251,0.15);
}
.course-price{font-family:var(--font-display);font-size:38px;font-weight:700;color:var(--text-primary)}
.course-price-note{font-family:var(--font-mono);font-size:11.5px;color:var(--text-muted);margin-bottom:20px}
.course-includes{list-style:none;display:flex;flex-direction:column;gap:10px;margin:20px 0 24px}
.course-includes li{font-size:13.5px;color:var(--text-secondary);padding-left:22px;position:relative}
.course-includes li::before{content:'✓';position:absolute;left:0;color:var(--teal);font-weight:700}
.course-enroll-btn{width:100%;justify-content:center;margin-bottom:10px}
.course-enroll-btn[disabled]{opacity:.55;cursor:not-allowed}
.course-note{font-size:12px;color:var(--text-muted);text-align:center;margin-top:4px}

.domain-block{margin-bottom:32px}
.domain-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.domain-weight{
  font-family:var(--font-mono);font-size:11px;color:var(--cyan);background:rgba(20,224,239,0.08);
  border:1px solid rgba(20,224,239,0.22);padding:3px 9px;border-radius:5px;
}
.module-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 16px;border:1px solid var(--border);border-radius:9px;margin-bottom:8px;background:var(--panel);
}
.module-row-title{font-size:14px;color:var(--text-primary)}
.module-tag{font-family:var(--font-mono);font-size:10.5px;padding:3px 8px;border-radius:5px;white-space:nowrap}
.module-tag.free{color:var(--teal);background:rgba(15,118,110,0.1);border:1px solid rgba(15,118,110,0.3)}
.module-tag.locked{color:var(--text-muted);background:var(--bg-alt);border:1px solid var(--border)}

@media (max-width:860px){
  .course-layout{grid-template-columns:1fr}
  .course-price-card{position:static}
}

/* quiz */
.quiz-block{border:1px solid var(--border);border-radius:12px;background:var(--panel);padding:26px}
.quiz-q{margin-bottom:26px;padding-bottom:22px;border-bottom:1px solid var(--border)}
.quiz-q:last-of-type{border-bottom:none;margin-bottom:16px}
.quiz-question{color:var(--text-primary);font-weight:600;font-size:15px;margin-bottom:12px}
.quiz-option{
  display:block;padding:10px 14px;margin-bottom:6px;border:1px solid var(--border-strong);
  border-radius:8px;font-size:14px;color:var(--text-secondary);cursor:pointer;transition:border-color .15s,background .15s;
}
.quiz-option:hover{border-color:var(--blue)}
.quiz-option input{margin-right:10px}
.quiz-q.correct .quiz-option.right-answer{border-color:var(--teal);background:rgba(15,118,110,0.08);color:var(--text-primary)}
.quiz-q.incorrect .quiz-option.chosen-wrong{border-color:#B91C1C;background:rgba(185,28,28,0.08)}
.quiz-q.incorrect .quiz-option.right-answer{border-color:var(--teal);background:rgba(15,118,110,0.08);color:var(--text-primary)}

@media (max-width:960px){
  .cert-grid{grid-template-columns:1fr 1fr}
  .dash-body{grid-template-columns:repeat(2,1fr)}
  .dp-card.full{grid-column:span 2}
  .grid-5{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .hero-mark{order:-1}
  .hero-mark img{max-width:260px}
  .hero-glow{width:420px;height:420px;top:-100px;right:-100px}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height 0.2s ease;
  }
  .nav-links.open{max-height:500px}
  .nav-links a{width:100%;padding:14px 28px;border-bottom:1px solid var(--border)}
  .nav-toggle{display:block}
  .grid-3,.grid-2,.grid-5,.pillar-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;gap:8px}
  .featured-track{grid-template-columns:1fr}
  .dash-body{grid-template-columns:1fr 1fr}
}