/* ════════════════════════════════════════════════════════
   Color By Number — Landing Page Styles  
   ════════════════════════════════════════════════════════ */
:root {
    --bg-dark: #0a0a1a;
    --bg-dark-alt: #0f0f24;
    --bg-card: rgba(255,255,255,0.04);
    --bg-card-hover: rgba(255,255,255,0.08);
    --bg-glass: rgba(255,255,255,0.06);
    --bg-glass-border: rgba(255,255,255,0.1);
    --primary: #6C5CE7;
    --primary-light: #a29bfe;
    --secondary: #00B894;
    --secondary-light: #55efc4;
    --accent: #FDCB6E;
    --danger: #ff6b6b;
    --text-primary: #f5f5f7;
    --text-secondary: rgba(255,255,255,0.65);
    --text-muted: rgba(255,255,255,0.4);
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-glow: 0 0 60px rgba(108,92,231,0.15);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-body);background:var(--bg-dark);color:var(--text-primary);line-height:1.7;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-heading);line-height:1.2}
.section-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;text-align:center;margin-bottom:12px}
.section-subtitle{font-size:1.1rem;color:var(--text-secondary);text-align:center;max-width:650px;margin:0 auto 60px}
.gradient-text{background:linear-gradient(135deg,var(--primary-light),var(--secondary-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-body);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}
.btn-primary{background:linear-gradient(135deg,var(--primary),#5a3fd6);color:#fff;box-shadow:0 4px 20px rgba(108,92,231,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(108,92,231,0.5)}
.btn-outline{background:transparent;color:var(--text-primary);border:1.5px solid var(--bg-glass-border);padding:8px 20px;font-size:0.9rem;border-radius:var(--radius-sm)}
.btn-outline:hover{border-color:var(--primary-light);background:rgba(108,92,231,0.1)}
.btn-lg{padding:16px 36px;font-size:1.05rem}
.btn-xl{padding:20px 48px;font-size:1.15rem;border-radius:var(--radius-lg)}
.btn-loader{width:20px;height:20px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Navigation */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;transition:var(--transition);background:transparent}
.navbar.scrolled{background:rgba(10,10,26,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--bg-glass-border);padding:10px 0}
.nav-container{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px}
.logo-text{font-family:var(--font-heading);font-size:1.3rem;font-weight:800;letter-spacing:-0.02em}
.logo-accent{color:var(--secondary)}
.nav-actions{display:flex;align-items:center;gap:24px}
.nav-link{color:var(--text-secondary);font-size:0.9rem;font-weight:500;transition:var(--transition)}
.nav-link:hover{color:var(--text-primary)}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 0 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.grid-pattern{position:absolute;inset:0;background-image:linear-gradient(rgba(108,92,231,0.06) 1px,transparent 1px),linear-gradient(90deg,rgba(108,92,231,0.06) 1px,transparent 1px);background-size:40px 40px;animation:gridMove 20s linear infinite}
@keyframes gridMove{to{transform:translate(40px,40px)}}
.gradient-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.4;animation:orbFloat 8s ease-in-out infinite}
.orb-1{width:400px;height:400px;background:var(--primary);top:10%;left:15%}
.orb-2{width:350px;height:350px;background:var(--secondary);top:50%;right:10%;animation-delay:-3s}
.orb-3{width:300px;height:300px;background:var(--accent);bottom:10%;left:40%;animation-delay:-6s}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(30px,-20px) scale(1.05)}66%{transform:translate(-20px,30px) scale(0.95)}}
.hero-content{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;background:var(--bg-glass);border:1px solid var(--bg-glass-border);border-radius:50px;font-size:0.85rem;color:var(--accent);font-weight:500;margin-bottom:24px;animation:fadeInUp .8s ease}
.badge-pulse{width:8px;height:8px;background:var(--secondary);border-radius:50%;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;letter-spacing:-0.03em;margin-bottom:20px;animation:fadeInUp .8s ease .1s both}
.hero-subtitle{font-size:1.1rem;color:var(--text-secondary);max-width:600px;margin-bottom:40px;animation:fadeInUp .8s ease .2s both}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* Auth Modal */
.auth-modal-overlay{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,0.65);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s ease}
.auth-modal-overlay.open{opacity:1;pointer-events:all}
.auth-modal{position:relative;width:100%;max-width:420px;background:rgba(12,12,30,0.96);border:1px solid var(--bg-glass-border);border-radius:var(--radius-xl);padding:36px 32px;box-shadow:0 24px 80px rgba(0,0,0,0.6),var(--shadow-glow);transform:translateY(20px) scale(.97);transition:transform .3s cubic-bezier(.175,.885,.32,1.275)}
.auth-modal-overlay.open .auth-modal{transform:translateY(0) scale(1)}
.auth-modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-muted);font-size:1rem;cursor:pointer;padding:4px 8px;border-radius:6px;transition:var(--transition)}
.auth-modal-close:hover{color:var(--text-primary);background:rgba(255,255,255,.06)}
.auth-tabs{display:flex;gap:4px;background:rgba(255,255,255,0.05);border-radius:var(--radius-sm);padding:4px;margin-bottom:24px}
.auth-tab{flex:1;padding:10px;font-size:0.85rem;font-weight:600;font-family:var(--font-body);color:var(--text-muted);background:transparent;border:none;border-radius:6px;cursor:pointer;transition:var(--transition)}
.auth-tab.active{background:var(--primary);color:#fff}
.auth-form{display:flex;flex-direction:column;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:0.8rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.05em}
.form-group input{padding:14px 16px;background:rgba(255,255,255,0.06);border:1.5px solid rgba(255,255,255,0.1);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-body);font-size:0.95rem;transition:var(--transition)}
.form-group input::placeholder{color:var(--text-muted)}
.form-group input:focus{outline:none;border-color:var(--primary);background:rgba(108,92,231,0.08);box-shadow:0 0 0 3px rgba(108,92,231,0.15)}
.form-note{font-size:0.78rem;color:var(--text-muted);text-align:center}
.auth-error{margin-top:12px;padding:12px 16px;background:rgba(255,107,107,0.1);border:1px solid rgba(255,107,107,0.3);border-radius:var(--radius-sm);color:var(--danger);font-size:0.85rem;text-align:center}

/* Hero 2-column layout */
.hero-content{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-split{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;width:100%}
.hero-left{display:flex;flex-direction:column;align-items:flex-start;text-align:left}
.hero-left .hero-badge{margin-bottom:20px}
.hero-left .hero-title{font-size:clamp(1.9rem,4vw,3.2rem);text-align:left}
.hero-left .hero-subtitle{text-align:left;max-width:520px;margin-bottom:32px}
.hero-ctas{display:flex;gap:16px;align-items:center;margin-bottom:36px;flex-wrap:wrap}
.hero-stats{display:flex;align-items:center;gap:24px;padding:16px 28px;background:var(--bg-glass);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg)}
.stat{display:flex;flex-direction:column;align-items:center}
.stat-number{font-family:var(--font-heading);font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:0.72rem;color:var(--text-muted);font-weight:500;white-space:nowrap}
.stat-divider{width:1px;height:28px;background:var(--bg-glass-border)}

/* Hero product visual */
.hero-right{display:flex;align-items:center;justify-content:center}
.hero-product-visual{width:100%;display:flex;flex-direction:column;gap:14px}
.product-label-row{display:flex;align-items:center;gap:8px;font-size:.8rem;color:rgba(255,255,255,.5);flex-wrap:wrap}
.product-label{font-weight:600;color:rgba(255,255,255,.75)}
.product-arrow{color:var(--primary-light);font-weight:700}
.product-pages-row{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:10px;align-items:end}
.product-page-card{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;overflow:hidden;padding:6px;box-shadow:0 8px 32px rgba(0,0,0,.4);transition:transform .3s ease}
.product-page-card:hover{transform:translateY(-4px)}
.product-page-card.featured{border-color:rgba(108,92,231,.5);box-shadow:0 8px 40px rgba(108,92,231,.3)}
.product-page-card canvas{width:100%;height:auto;display:block;border-radius:6px}
.page-badge{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.7);color:#fff;font-size:.65rem;font-weight:700;padding:3px 10px;border-radius:20px;white-space:nowrap;letter-spacing:.04em}
.badge-color{background:rgba(108,92,231,.8)}
.badge-number{background:rgba(0,184,148,.7)}
.product-kdp-badge{text-align:center;font-size:.78rem;color:rgba(255,255,255,.45);padding:10px 16px;background:rgba(255,255,255,.03);border-radius:8px;border:1px solid rgba(255,255,255,.06)}

/* Showcase */
.showcase{padding:100px 0;background:var(--bg-dark-alt)}
.showcase-grid{display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap}
.showcase-card{flex:1;min-width:250px;max-width:320px;background:var(--bg-glass);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:20px;transition:var(--transition)}
.showcase-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.showcase-label{font-size:0.85rem;font-weight:600;color:var(--text-secondary);margin-bottom:12px;text-align:center}
.showcase-preview{aspect-ratio:3/4;background:rgba(0,0,0,0.3);border-radius:var(--radius-md);overflow:hidden;display:flex;align-items:center;justify-content:center}
.showcase-preview canvas{max-width:100%;max-height:100%;object-fit:contain}
.showcase-arrow{color:var(--primary-light);opacity:0.5;flex-shrink:0}

/* Features */
.features{padding:100px 0;background:var(--bg-dark)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.feature-card{background:var(--bg-glass);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:32px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);background:var(--bg-card-hover);box-shadow:var(--shadow-card)}
.feature-card:hover::before{opacity:1}
.feature-icon{font-size:2.2rem;margin-bottom:16px;display:inline-block}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:0.9rem;color:var(--text-secondary);line-height:1.7}

/* How It Works */
.how-it-works{padding:100px 0;background:var(--bg-dark-alt)}
.steps-grid{display:flex;flex-direction:column;gap:0;max-width:700px;margin:0 auto}
.step-card{display:flex;gap:24px;padding:28px;background:var(--bg-glass);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);transition:var(--transition)}
.step-card:hover{background:var(--bg-card-hover);transform:translateX(8px)}
.step-number{flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:50%;font-family:var(--font-heading);font-size:1.2rem;font-weight:800;color:#fff}
.step-content h3{font-size:1.1rem;font-weight:700;margin-bottom:6px}
.step-content p{font-size:0.9rem;color:var(--text-secondary)}
.step-connector{width:2px;height:24px;background:linear-gradient(var(--primary),var(--secondary));margin-left:52px;opacity:0.3}

/* Premium CTA */
.premium-cta{padding:100px 0;background:var(--bg-dark)}
.premium-card{max-width:800px;margin:0 auto;text-align:center;padding:60px 48px;background:linear-gradient(135deg,rgba(108,92,231,0.1),rgba(0,184,148,0.08));border:1px solid rgba(108,92,231,0.2);border-radius:var(--radius-xl);position:relative;overflow:hidden}
.premium-badge{display:inline-block;padding:8px 20px;background:rgba(253,203,110,0.15);border:1px solid rgba(253,203,110,0.3);border-radius:50px;font-size:0.85rem;font-weight:600;color:var(--accent);margin-bottom:20px}
.premium-card h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;margin-bottom:16px}
.premium-card>p{color:var(--text-secondary);max-width:560px;margin:0 auto 36px;font-size:1rem}
.premium-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:36px;text-align:left}
.pf-item{display:flex;align-items:center;gap:8px;font-size:0.9rem;color:var(--text-secondary)}

/* Final CTA */
.final-cta{padding:100px 0;background:linear-gradient(135deg,rgba(108,92,231,0.08),rgba(0,184,148,0.05));text-align:center}
.final-cta h2{font-size:clamp(1.6rem,3.5vw,2.5rem);font-weight:800;margin-bottom:16px}
.final-cta p{color:var(--text-secondary);font-size:1.05rem;margin-bottom:36px}

/* Footer */
.footer{padding:60px 0 32px;background:#060612;border-top:1px solid var(--bg-glass-border)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand p{margin-top:12px;font-size:0.85rem;color:var(--text-muted);line-height:1.7;max-width:320px}
.footer-links h4{font-size:0.85rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-secondary);margin-bottom:16px}
.footer-links a{display:block;padding:4px 0;font-size:0.88rem;color:var(--text-muted);transition:var(--transition)}
.footer-links a:hover{color:var(--primary-light)}
.footer-bottom{padding-top:24px;border-top:1px solid var(--bg-glass-border);text-align:center;font-size:0.8rem;color:var(--text-muted)}

/* Animations */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ── Hero page skeleton ────────────────────────────────────── */
.page-skeleton{width:100%;aspect-ratio:3/4;background:rgba(255,255,255,.07);border-radius:6px;overflow:hidden;position:relative}
.page-skeleton::after,.skeleton-shimmer::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.08) 50%,transparent 100%);animation:shimmer 1.6s ease-in-out infinite;transform:translateX(-100%)}
@keyframes shimmer{to{transform:translateX(100%)}}

/* ── Demo Showcase ─────────────────────────────────────────── */
.demo-tabs{display:flex;gap:8px;justify-content:center;margin-bottom:36px;flex-wrap:wrap}
.demo-tab{padding:10px 24px;font-size:.9rem;font-weight:600;font-family:var(--font-body);background:rgba(255,255,255,.05);border:1.5px solid rgba(255,255,255,.1);border-radius:50px;color:var(--text-secondary);cursor:pointer;transition:var(--transition)}
.demo-tab:hover{border-color:var(--primary-light);color:var(--text-primary)}
.demo-tab.active{background:linear-gradient(135deg,var(--primary),#5a3fd6);border-color:transparent;color:#fff;box-shadow:0 4px 20px rgba(108,92,231,.35)}

.demo-set{animation:fadeInUp .4s ease}
.demo-grid{display:grid;grid-template-columns:1fr 48px 1.2fr 1.2fr;gap:16px;align-items:start;margin-bottom:20px}

.demo-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);border-radius:var(--radius-lg);padding:16px;display:flex;flex-direction:column;gap:12px;transition:var(--transition)}
.demo-card:hover{border-color:rgba(255,255,255,.18);transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.demo-card.featured-card{border-color:rgba(108,92,231,.4);background:rgba(108,92,231,.07);box-shadow:0 8px 32px rgba(108,92,231,.2)}
.demo-card.featured-card:hover{border-color:rgba(108,92,231,.7);box-shadow:0 16px 50px rgba(108,92,231,.3)}

.demo-card-label{font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}

.demo-card-img-wrap{border-radius:10px;overflow:hidden;background:rgba(0,0,0,.2)}
.demo-source-img{width:100%;height:auto;display:block;border-radius:10px}

.demo-card-canvas-wrap{position:relative;border-radius:10px;overflow:hidden;background:rgba(0,0,0,.15);min-height:200px}
.demo-card-canvas-wrap canvas{width:100%;height:auto;display:none;border-radius:10px}
.demo-skeleton{position:absolute;inset:0;border-radius:10px;overflow:hidden;background:rgba(255,255,255,.06)}
.skeleton-shimmer{position:absolute;inset:0}

.demo-card-badge{align-self:flex-start;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:700;letter-spacing:.04em}
.badge-green{background:rgba(0,184,148,.2);border:1px solid rgba(0,184,148,.4);color:#55efc4}
.badge-purple{background:rgba(108,92,231,.2);border:1px solid rgba(108,92,231,.4);color:#a29bfe}

.demo-arrow-col{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding-top:40px;color:var(--text-muted)}
.demo-arrow-badge{background:rgba(253,203,110,.15);border:1px solid rgba(253,203,110,.3);color:var(--accent);font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:12px;white-space:nowrap;text-align:center}

.demo-info-strip{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);padding:14px 20px}
.demo-info-item{display:flex;flex-direction:column;align-items:center;padding:0 20px}
.demo-info-sep{width:1px;height:30px;background:rgba(255,255,255,.1)}
.di-label{font-size:.72rem;color:var(--text-muted);font-weight:500;text-transform:uppercase;letter-spacing:.05em}
.di-value{font-size:.9rem;font-weight:600;color:var(--text-primary);margin-top:2px}

@media(max-width:900px){
    .demo-grid{grid-template-columns:1fr 36px 1fr;grid-template-rows:auto auto}
    .demo-card:nth-child(4){grid-column:1;grid-row:2}
    .demo-card.featured-card{grid-column:3;grid-row:1}
    .demo-arrow-col{grid-column:2;grid-row:1}
}
@media(max-width:600px){
    .demo-grid{grid-template-columns:1fr;gap:12px}
    .demo-arrow-col{flex-direction:row;padding-top:0;justify-content:center}
    .demo-arrow-col svg{transform:none}
    .demo-info-item{padding:0 10px}
    .demo-info-sep{height:20px}
}

/* Responsive */
/* ── KDP Profit Teaser ─────────────────────────────────────── */
.profit-teaser{padding:80px 0;background:linear-gradient(135deg,#0f0f23 0%,#1a1040 100%)}
.profit-card{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.profit-badge{display:inline-block;background:rgba(108,92,231,.2);border:1px solid rgba(108,92,231,.4);color:#a29bfe;padding:6px 16px;border-radius:20px;font-size:.85rem;font-weight:600;margin-bottom:20px}
.profit-left h2{font-size:1.9rem;color:#fff;margin-bottom:16px;line-height:1.3}
.profit-left p{color:rgba(255,255,255,.75);line-height:1.7;margin-bottom:12px}
.profit-left strong{color:#fff}
.profit-list{list-style:none;padding:0;margin:20px 0 28px;color:rgba(255,255,255,.8);font-size:.95rem}
.profit-list li{margin-bottom:8px}
.profit-example{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:28px 32px}
.profit-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.7);font-size:.95rem}
.profit-row strong{color:#fff}
.profit-total{border-bottom:none;margin-top:4px;padding-top:16px;font-weight:700;font-size:1.05rem;color:#fff}
.profit-total strong{color:#00B894;font-size:1.2rem}
.profit-note{margin-top:16px;font-size:.88rem;color:rgba(255,255,255,.5);line-height:1.5}
.profit-highlight{color:#FDCB6E;font-weight:700;font-size:1rem}

/* ── Tier Unlock Grid ──────────────────────────────────────── */
.tier-unlock-grid{display:flex;align-items:center;gap:12px;margin:36px 0 40px;flex-wrap:wrap;justify-content:center}
.tier-unlock-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:20px 18px;text-align:center;flex:1;min-width:140px;max-width:180px;transition:border-color .2s}
.tier-unlock-card.highlight{border-color:#6C5CE7;background:rgba(108,92,231,.12)}
.tuc-badge{font-size:1.8rem;margin-bottom:6px}
.tuc-count{font-size:.8rem;color:rgba(255,255,255,.5);font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.tuc-title{font-size:1rem;font-weight:700;color:#fff;margin:4px 0}
.tuc-perks{font-size:.82rem;color:rgba(255,255,255,.65);line-height:1.5}
.tier-unlock-arrow{font-size:1.2rem;color:rgba(255,255,255,.3);flex-shrink:0}

/* ── Referral panel — KDP tip ───────────────────────────────── */
.kdp-tip{margin-top:20px;background:rgba(0,184,148,.1);border:1px solid rgba(0,184,148,.25);border-radius:10px;padding:12px 16px;font-size:.88rem;color:rgba(255,255,255,.8);line-height:1.5}
.kdp-tip strong{color:#00B894}
.tier-track{display:flex;flex-direction:column;gap:12px}
.reward-tier{display:flex;justify-content:space-between;align-items:flex-start;padding:14px 16px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);transition:border-color .2s}
.reward-tier.unlocked{border-color:rgba(0,184,148,.4);background:rgba(0,184,148,.06)}
.reward-tier.next{border-color:rgba(108,92,231,.5);background:rgba(108,92,231,.08)}
.tier-marker{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:52px}
.tier-badge-icon{font-size:1.4rem}
.tier-count-label{font-size:.72rem;color:rgba(255,255,255,.45);text-align:center}
.tier-details{flex:1;padding-left:14px}
.tier-title{display:block;font-size:.95rem;font-weight:700;color:#fff;margin-bottom:3px}
.tier-perk{font-size:.82rem;color:rgba(255,255,255,.6);display:block}
.tier-cta{font-size:.8rem;color:#a29bfe;font-weight:600;margin-top:4px;display:block}

@media(max-width:900px){
    .hero-split{grid-template-columns:1fr;gap:40px}
    .hero-left{align-items:center;text-align:center}
    .hero-left .hero-title,.hero-left .hero-subtitle{text-align:center}
    .hero-right{order:-1}
    .product-pages-row{max-width:480px;margin:0 auto}
}
@media(max-width:768px){
    .nav-link{display:none}
    .hero{padding:100px 0 60px}
    .hero-stats{flex-direction:column;gap:12px;padding:16px 20px}
    .stat-divider{width:60px;height:1px}
    .auth-modal{padding:28px 20px;margin:16px}
    .showcase-grid{flex-direction:column}
    .showcase-arrow{transform:rotate(90deg)}
    .showcase-card{max-width:100%}
    .features-grid{grid-template-columns:1fr}
    .step-card{flex-direction:column;align-items:center;text-align:center}
    .step-connector{margin-left:auto;margin-right:auto}
    .premium-card{padding:40px 24px}
    .premium-features{grid-template-columns:1fr}
    .profit-card{grid-template-columns:1fr}
    .tier-unlock-grid{gap:8px}
    .tier-unlock-card{min-width:120px}
    .tier-unlock-arrow{display:none}
    .footer-grid{grid-template-columns:1fr;gap:32px}
}
@media(max-width:480px){
    .hero-title{font-size:1.5rem}
    .hero-subtitle{font-size:0.95rem}
    .section-title{font-size:1.5rem}
    .btn-lg{padding:14px 28px;font-size:0.95rem}
    .btn-xl{padding:16px 32px;font-size:1rem}
}